INTRODUCTION.

Tuts Volume includes an enumeration of the species of fifteen Families of Hymenoptera :

four of the section Sessiliventria—Tenthredinide, Cephide, Siricide, and Orysside ; and

eleven of Petioliventria—Cynipide, Figitide, Chalcidide, Ichneumonide, Braconide,

Stephanide, Evaniide, Trigonalide, Pelecinide, Proctotrupide, and Chrysidide. It

was commenced by Mr. Cameron in 1883, and concluded in 1888, a brief supplement

containing a list of the species described or recorded by him elsewhere from Central

America having been added last year. The material examined was mostly from

Guatemala or the State of Panama, but little from Mexico having been received by us

at that time ; hence very few of the numerous Mexican forms of Ichneumonide, &c.,

described by North-American writers were represented in our collection. Since then

Mr. H. H. Smith has obtained for us a vast number of specimens from Mexico of

nearly all the above-mentioned Families; it is, however, quite impossible for us to deal

with this immense amount of additional material now, which would necessitate a fresh

study of the entire subject and a revision of the whole work. We are therefore

reluctantly compelled to close this Volume as its stands, and trust that Mr. Cameron’s

‘‘Contribution,” incomplete as it must be as regards the total number of species

inhabiting the region under investigation, has added considerably to our knowledge

of these interesting insects.

Altogether 1109 species are enumerated, of which 596 are treated as new, the total

number for each Family being as follows:—Tenthredinide, 152, with eighty-three

new; Cephide, one; Siricide, three, with one new; Orysside, two, with one new;

Cynipide, fifteen, with six new; Figitide, five, with three new, and two new genera ;

Chalcidide, 121, with seventy-one new, and eleven new genera; Ichneumonidae, 533,

with 209 new, and three new genera; Braconide, 176, with 157 new, and four new

genera; Stephanide, five, with three new; Evaniide, twenty-three, with sixteen

new; Trigonalide, nine; Pelecinide, two; Proctotrupide, forty-three, with thirty-

five new ; Chrysidide, nineteen, with eleven new, and one new genus.

Ep.

August 1900.

LIST OF PLATES.

Plate. Fig. | Page. Plate Fig. | Page

Ptilia nasuta, 9 ........ eee eee ee IIT. 1 44

Tentawepinm a, ff ET IV. 2 44

Siobla ornaticornis................ I. 16 3 crassula.........-......000; XX. 18 | 468

Stronglylogaster letus, 9 .......... IT, 3 6 NIVErTIMA 2... .. ee eee eee ee XX. 19 | 469

pilicornis, Q ........ 0.00000. II. 1 8 || Sericocera alternator, Q .......... Il. 4 46.

—— maculipennis, 9 ............ I. 8 9 a: III. 5 46

—— melanocephalus, 2 .......... II. 2 1O |) —— quercus, 9 ............005. I. 15 46

12, villosa, Q oo... cece e ee ee wees II. 15 7

leucostoma, 2... +... see e ee I. 7 { 467 -leucotarsis, 2.00... sees see II. 2) 47

—— fulviventris, 2 .............. I. 13 14 -leucopoda ............ eee IIT. 3 48

NIQTItOYIUS .. 2... . eee eee ee L 14 14 || Incalia hirticornis, 9.............. III. 6 53,

diversipes 0.1... se eee eee I. 5 16 || Loboceras klugi, Q .............. I. 1 55

bicolor, Qo... eee eee II. 4 17 | IV. 3 55

fumipennis .............05- XX. 15 | 467 calcar...... ee eee ee eee 1. 12 56

Selandria crassa, Q 2... .. ee cee I. 5 19 fuscipenne, Q ...........4..- I. 6 57

Monophadnus trimaculatus, 9 ...... II. 6 22 || Perantherix ** westwoodi, 9 ...... Ill. 12 58

fascipennis * ..............4- I. 17 23 bimaculata, 9 .............. III. 8 59

annulipes, Qo... ... eee eee I. 3 23 || Lophyroides tropicus .......-..... . III. 10 61 |

ochra, Sok ee eee IT. 7 26 ruficollis, Sw... eee ee ee eee If. 11 62

violaceipennis, ............ IT. 8 26 || Perreyia capitula .. ............. III. 7 63

Blennocampa albofemoralis, 9 ...... II. 12 31 championi ...............04- IV. 6 64

intermedia, Q .............. II. 11 31 || Decameria rufiventris.............. IV. 4 65

subeerulea fT, Q .....--2005- II. 10 32 nigriventris, Q ........-.-.5-. II. 9 65

Poecilosoma mexicanum, @ ........ II. 9 34 facialis Th... 0. ee ee eee IV. 5 66

Emphytus championi, Q .......... II. 13 35

Euura mexicana.............. 005. XX. 17 | 468 Srprcrp#

Hemichroa nigricans .............. XX. 16; +68 BICID 2.

Hylotoma basimacula..........0+-. XX. 14 { ae Derecyrta rugifrons ............-- III. 13 68

bivittata, QD eee e cece e eens II. 14 7 Orysstp#.

nigriceps, Q ..... eee eee eee IV. 1 39

semifusca ...... see eee eee I. 11 39 || Oryssus nigricans ............04-- III. 14 69

annulipes .........0 eee eee r G 3

Dielocera biramosat, Q .....-.--- .

imitatrix$, 2. Boy I. 4] 42 Center.

Ptilia versicolor || ...........++-55 I. 9 44 || Cynips imitator, gall .............. IV. 8 70

* Strongylogaster fuscipennis on the Plate.

+ Blennocampa cerulea on the Plate.

+ Didymia biramosa on the Plate.

§ Ptilia imitatrix on the Plate.

|| Didymta versicolor on the Plate.

G Laloceras klugit on the Plate.

** Peranthrix on the Plate.

tt Decameria facilis on the Plate.

Vill

LIST OF PLATES.

* Leucaspis mexicana on the Plate.

|| Orasema flavipes on the Plate.

: __,

Plate. Fig. | Page. Plate Fig. | Page.

Cynips guatemalensis, gall ........ IV. 7 71 || Lutnes crassicornis, @ ............ VI. 15 | 126

Synergus filicornis, 9 ............ IV. 10 72 || Aseirba caudata.................. VI: 13 | 128

Andricus (Aphilothrix) aztecus...... XX. 23 | 469 | Epistenia balteata, Q ............ VI. 3 | 129

Aulax rufipes .................0.. XX. 21 | 469 maculipes, Q.............00. VI. 4} 180

Amotura annulicornis, 9 .......... VI. 6 131

Fier Lelaps albipes, Q ................ VI. 8 | 182

° ferruginea, Q .............. VI. 7 | 188

Anacharis mexicanus.............. XX. 22 | 470 |) Prionopelma pilipes, 9 ............ VI. 5 | 184

Ibalia ruficollis .................. XX. 20 | 470

Neralsia rufipes, 9 .............. IV. 9 74 “*

| Leiopteron westwoodi, 9 .......... IV. 12 7 Tcnyeuwonrpas **.

)| Patroclus nigroceruleus, 2 ........ VII, 1} 1386

Cuatcrpipm Ichneumon costaricensis .......... VII. 3} 188

° aStarte 2.0... eee ee eee eee VII. 5 | 1389

Leucospis mexicana*, 9 .......... IV. 11 76 bilimeki... 2... ee ee eee Vil, 6 | 140

Smicra championi, 9.............. Vv. 1 80 bellatulus ..............0..0. VII. 7 | 141

nigromaculata, 9 ............ IV. 15 83 || —— meridionalis ................ VIL. 2] 142

—— cardinalis, 9 ................ V. 5 84 || —— pterelas .......... 0... 0000, VII. 4 | 142

—— miranda, 9? ................ IV. 13 86 . 144,

——— geniculata.......00. v. 4 87 MEXICANUS.... 6... ee ee ee VIII 1 { 471

octomaculata.. ............. V. 8 88 144,

maculicollis ................ V. 7 88 suffultUs seve ee sees eee VIII 2 { 471

centralis.................04. V. 6 89 sycophantus ................ VII. 8] 146

dorsivittata .............0.. V. 2 90 lariceus ...... 00... . ee ee een VII. 9| 147

panamensis ................ V. 3 90 CTOS cece ee eee eee eee VII. 14 | 149

nigrifrons ....... 0.0. eee ee ee V. 9 91 celatus .............0.0000, VII. 13 | 150

nigriventris ................ IV. 14 96 forreri oo... ee eee cece eee VII. 15 | 151

Phasganophora rufitarsis T, ? Vv. 10, 98 || ——tumidulus .........2........ VII. 12; 152

Chaleis ovata, 9 .............0005. IV. 16 99 curtituberculatus ............ VIL. 11 | 153

Acanthochalcis nigricans, 2 ........ VI. 14; 101 Salvini 2... eee eee ee ee VII. 16 | 155

. 102, CaUStICUS 2... ... ce ee eee ee VIII. 3] 156

Lirata Iuteogaster$ .............. Ve | 16 | ayy godmani.........-.......... vi. |18| 157

103, aANAaMeNSIS ....... 00... eee VIII. 4} 158

| Kapala fureata§................06) We FAT |) ge | lymphatus 200s so Vil, | 19] 158

| Lophyrocera stramineipes, Q ...... V. 18 | 103 championi ...............0.. VII. 17.| 159

nigromaculata, ¢ ............ Vv. 19 104 | —— munerosus.................. VII. 10 159

| Orasema stramineipes ||, Q ........ Vv. 20; 105 | —— guatemalensis .............. VII. 20 | 160

eee eee eee tence neces VI. 18 | 105 illacessitus.............0000. VII. 21} 163

Diomorus mayri, 9 .............. IV. 17 | 106 turpiculus .................. VII. 22) 163

| Eurytoma aurifrons, 9 ............ Vv. 11} 108 multiplagiatus .............. VIIl, |} 5 | 164

petioliventris, 9 ..........., V. 12; 108 suffrageneus ................ VIII 13 | 165

Bephrata ruficollis, @ ............ Vv. 13; 109 opiniosus .......... eee eee VIII 11 | 166

Spalangia chontalensis, 29 .......... V. 14}; 110 truculentus ................ VIII 12 | 166

Paralesthia mandibularis] ........ V. 15 111 democraticus ................ VIII 10 167

Hontalia cerulea, 9 .............. VI. 1{/ 113 | valladolidensis .............. VIII 9} 167

ruficornis, 9 ............0... VI. 2). 113 |. SUDSECIVUS .... 0... 0.00. e eee VIII 7 | 168

EKupelmus compressicornis, Q ...... VI. 12 | 115 | —— yueatanensis ................ VIII 8 | 168

gigas, Qo. eee eee VI. 9} 116 | —— centralis.................... VIII. | 15] 173

testaceus, 9 ...........0000. VI. 10 | 117 | —— parsimonicus................ VII. 23 | 174

erythrothorax .............. Vi. 11} 121 | ——alvarado.................0.. VII. 24) 175

Lutnes ornaticornis, 9 ............ VI. 16} 125 | MOLIVUS .... ee eee ee eee VIII 16 | 176

T Phasgonophora rufitarsis on the Plate.

¥ Schizaspidia flaviventris on the Plate.

Schizaspidia furcata on the Plate.

“| Paralestethia mandibularis on the Plate.

** The figure of Pharsalia albofacialis, Tab. XVII.

fig. 15, must be erased, the insect not being

described in this work (cf. p. 473).

LIST OF PLATES. 1X

Plate Fig. | Page Plate. Fig. | Page

Ichneumon beatus ................ VIII 17 | 177 | Polyeyrtus fulvipes...........0.000.. X. ll | 238

maculosus Se eee eee cece ee ee VIIL. 6 179 —— erythrosternus, 2 ............ IX. 20 | 241

—— exquisitus ........ 0.0.0.0... VIl. 25 | 179 tinctipennis, 9 .............. IX. 19 | 241

—— piliventris..............0... VIII. 19; 179 | curviventris, 2 .............. X. 28 | 243

—— notabilis.. ele, VIEL. | 20} 180 | xanthothorax, Q ............ Xx. 12| 243

——aarlel oo... VIII 14 | 181 | Polyenus championi, 2............ OX, 23, 245

aztecUS ...............0000. VUI 18 | 182 basimacula, gd ..........000. | 6oIX, 25 | 246

—— orizabensis.........00....... VII. | 21] 183 ; eve ee eeeeeeeeee) IX, 24 | 246

—— fortispina .................. Vill 24 | 185 | Christolia panamensis, 9 .......... | X. 27 | 247

(?) conicus........ 0.0.0.0... Vill 22; 187 menticula, 9 ................ | X. 29 | 248

(Hdicephalus glucidatus............ VILL. 23 | 188 || Cryptanura incauta, 2 ............ | X. 30 | 251

Trogus ornaticornis ....... peeeeee IX. 2) 190 | Hemiteles flavovariegatns, 2 ...... | X. 23 | 254

blandita....2..... 0.0.0.0... IX. 1; 191 albituberculatus, Q .......... X. 25 | 257

pulchripennis................ VIII. 25 | 191 montezuma, Q .............. Xx. 26 | 257

Joppa melanocephala vee ee ee eb ence IX, 4 193 ornaticeps, Q) ..... 2... eee | X. 24 | 258

VATIPOS 6. ee ee eee IX. 9] 193 | Rhyssa nigritarsis, 9 ............ i OXI. 3} 260

fumipennis ..............4. Ix. 11 195 || Epirhyssa mexicana, 2 ............ XI. 2] 262

——— melanostigma .............. IX. 10 | 195 || Ephialtes annulicornis, 9 .......... XI. 1] 262

-—— nigriceps ...............0.. IX. 5 197 -——— nigricans, 9 .............04. XI. 5 | 263

modesta...... eee eee eee IX. 8 198 Theronia lineata, 9 .............. XI. 4 | 264

xanthostoma...........-.... IX. 6 | 198 chiriquensis, Q ...........04. XI. 6 | 264

sumichrasti ................ IX. 7 | 200 | Pimpla sedula, 9 ................ XI. 10 | 265

Abzaria latipetiolaris.............. IX. 3; 201 croceipes, 9 ............ 000 XI. 12 | 266

Cryptus bicolor, 2 ............0... IX. 12) 202 ——— punicipes, 9 ..............0. XI. 16 | 266

solabilis...............0..00. IX. 15 206 —— coxatat, Q ................ XI. 14 | 267

xanthostigma, 9 ............ 1D. 14) 207 albomarginata, 2 ............ XI. 15 | 267

hebetis, Q.......000....0000. IX. 13) 208 xanthostigma, 9 ............ XI. 9 | 269

Joppidium ruficolle, Q ............ 1X, 16 210 argentifrons, 9 .............. XI, 17 269

ceruleipenne ..............4. IX. 17 | 211 | Epimecis tibialis, 9 ...........0.. XIT 1; 270

. yucatanense, 9 .............. IX. 18 211 Glypta rufomarginata, 9 .......... XI. 18 271

Phygadeuon melanopoda, 9 ........ X. 22 214 Odontopimpla pulcherrima, Q ...... XL. 11 272

Mesostenus nigerrimus, 2 .......... X. 20 215 Lissonota albispina, 2 ............ | XI. 19 273

annulitarsis, Q ..........000. X. 15 | 215 leucopoda, 9 .......-....00.. XI, 20 | 275

Vividus, 9 ....... cece eee eee X. 18 | 216 || Phytodictas guatemalensis, 2 ...... XI. 21 | 276

intrudens .............0000. X. 217 - ~ | f 277

Jamentarius, 9 .............. x Ly iy Labena grallator, 9 ......++...04. AM ‘ {ae

ornatifrons............0..005. X. 17 | 221 || Metopius femoratus .............. XI. 23 | 278

megapoda, 9 ....... eee eee Xx. 19} 224 | Exochus stramineipes ............ XI. 7 | 279

costaricensis*, Q ............ X. 13 | 225 Bassus frontalis ................08 AL, 8 | 281

parvituberculatis, 2 .......... X. 21 228 Mesoleptus mexicanus ............ | AT. 22; 281

Polycyrtus obtusispina ............ X. 1 | 230 alpestrig... 0.6.0.0... 00.00 XI. 24 | 282

collinus ...............00-0. X. 2 231 persimilis ...-..........000. XI, 25 | 28%

confirmatus ..............0.. X, 3 | 232 || Mesoleius montezuma ............ XII 4 | 286

cruciatus 21... eee ee eee X. 4 | 232 | Trvyphon montezuma .............. XII 2; 286

——— fulvofemoratus, Q@ .......... IX. 22 | 233 |, Polyblastus(?) aztecus, d .......... AII. 3) 287

a eee ce eee X. 5 | 233 | Thyreodont niger ............ an XII. 12) 288

montezuma ...........000- XxX. 6 | 234 erythrocera 2.0.0.2... . ee ee XII 13; 288

—— canaliculatus................ X. 7 | 234 laticinctus .... 0... 00. eee eee XIT. 14 | 289

blanditus ..............004, IX, 21) 235 rufithorax, Q ........-..06. XIL 15 | 290

chontalensis ................ X. 8 | 236 || Ophion (Eniscopilus) mexicanus XII. 23 | 290

guatemalensis .............. X. 9 | 237 ( ) concolor... ............ | XII 24 | 291

—— nigritibialis ..............6. X. 19 | 238 || -—— (——) flavoscutellatus §...... XII 25; 291

* Mesostenus nicaraguensis on the Plate,

+ Pimpla coxator on the Plate.

+ Thyredon on the Plate.

§ Ophion thoracicus on the Plate.

BIOL. CENTR.-AMER., Hymenopt., August 1900.

LIST OF PLATES.

Plate. Fig. | Page. Plate. Vig.| Page

Ophion (Eniscopilus) flavus ........ XII. 21 | 292 | Iphiaulax championi, 2 .......... XIV. 4} 339

( ) monticola ............ XIL. 28 | 292 Imitatrix, 9 ......-. se ee eee XIV. 13 | 340

——— (——) maculipennis.......... XII. 29 | 292 gloriatorius, 9 .............. XIV. 1| 341

—— ( ) guatemalensis ........ XII. 22 | 293 hector, Qo... . eee eee ee AIV. 5 | 3842

curvinervis .............-.. XII. 19 | 293 guatemalensis, Q .......-.... XIV. 8 | 3842

chiriquensis ................ XII. 20 | 294 calderensis, Q .........0.... XIV. 6} 343

flavo-orbitalis .............. XII. 16 | 294 godmani, 9 ..........-.00-- ALY. 7 | 344

ancyloneura ............0005 XII. 17 | 294 piliventris, @ .........00... XIV. 9] 346

melanostigma .............. XII. 18 295 aZteCUS, Po... . eee ee eee eee XIV. 10 | 348

Agathophiona fulvicornis .......... XII. ll 297 argentifrons, QP .........0 0s XIV. ll 3849

Heteropelma sonorensis............ XII. 30 | 298 montezuma, 2 .........6-0e, XIV. 12 | 349

Retanisia facialis ................ XIL. 10 | 299 abaculus, 9 ...........-.-0. XIV. 23 | 3850

Anomalon guatemalenum, 2 ...... XII. 26 | 300 quadripunctatus, d .......... XIV. 25 | 3852

Kiphosoma mexicanum* .......... XII. 31 | 302 -basimacula, d 2.2.0... ee ee XV. 2) 363

Paniscus geminatus .............. XIII 5} 302 || —— »>Q .eeeeee eee cece XV. 1 | 353

Campoplex tepanecus.............. XII 1 304 —— humerosus, 9 .............. XLY. 14) 354

verepaciS 6.6... 0... ee ee XII 3 | 305 fuscidens, 5 .....-....0000- XIV. 19 | 355

MexiCanUs..........0. eee XIII. 4} 305 vereepacis, Qo... . ee eee eee XIV. 15 | 356

divisus 02... ...... 0000000 XIII 2; 3806 tinctipennis, Gd ...........04. XIV. 16 | 357

Limneria albispina................ XI. 13 | 307 || —— levis, Q oo... eee eee ee, XIV. 17 | 357

sonorensis, Q .............. XII 6 | 3807 megaptera, 9 1... ... eee eee XV. 5 | 358

Nonnus atratust, 9 .............. XIT. 8 | 309 vagabundus, Q ..........000- XIV. 20 | 359

antennatus .......-......0.0. XII. 9 | 309 salvini, Qo. wo. eee eee eee XIV. 21, 360

Grotea fulva, Q...... 0.000. cee een XII. 27 | 309 gravidus§, do ...... eee eee XIV, 24 | 3862

Scolobates (?) varicornis............ AIT. 5 | 310 cruentatus, Q .............. XV. 3 | 363

Banchus mexicanus .............. XT. 6 311 excuratus, 9... .......0 008: XV. 6 364

—— bifoveatus, Q ........ 00.00. XV. 9 | 366

-—— molestus, 9 ............0005 XIY. 22 | 367

Braconia. pilosellus, Q................ XV, 7 | 368

Bracon compunctor, 2 ............ XIII. 11 | 3138 sonorensis, Q@ .........0.00- XV. 4 | 373

frustratus, 9... 1... eee XIII. 8 314 avarus, OL... eee eee ee ee ee XV. 11 374

albipalpis, d................ XIII. 7| 315 jucundus, 9 ..........0.005. XV. 10 | 375

— Ro XVII. 6 | 472 bellicosus, Q ......... 0.0000. XV. 13 | 375

gracilescens, 9.............. XL 9; 3815 mendicus, 2 .......... 000s XV. 8 76

——~ bugabensis, 9 .............. XIII. 10; 3816 (?) multicarinatus, QO lee eaee XV. 12 | 377

distinguendus, 9 ............ XIII. 12 | 317 || Spathius tinctipennis, oe XV. 14 | 3879

apicipennis, Q .............. XIII. 13 | 318 ornaticornis, Q..........00.. XV. 18 | 381

morrisoni, 9 ........ 0... eae XIII. 18 {| 3820 || Doryctes strongylogaster, QO wee eeee XV. 21 382

sedulus, 9 ............20005. XII. 14 | 321 | Odontobracon montanus, 9 ........ XV. 17 '| 384

albispina, Q ............0... XIII. 15 323 crassiventris, 9 ............ XV. 15 385

blandicus, 9 ............005. XIII. 17 | 326 nigriceps, 9 ........ cee eee XV. 16 3885

democraticus, 9 ............ XILI. 19 | 327 | Yelicones violaceipennis, 9 ........ XV. 19 | 387

montivagus, 9 .........-...- XIII. 16 | 328 melanocephalus, 9 .......... XV. 20 | 388

Iphiaulax nigriceps, 9 ............ XIII. 20 | 329 || Rhogas mexicanus, ¢ ............ XV. 22 | 389

pulchripennis, Q ............/ XIII. 23 330 sonorensis, ¢ .......e cece XVI. 1 390

TOPETS1, Do... eee eee XII. 22 | 330 bugabensis, ¢ .......... 005, XV. 23 | 391

exaltatus, Q ...... 02.2... 008. XIII. 21 331 _ XVII 1 391,

lachrymosus, Q. ............ XIII. 24) 882 | ttt ese 472

CTOS, Gove. cece eee eee eee eee XIII. 25 | 334 || Leluthia mexicana, 9 ............ XVI. 2| 392

| beatus, 9.1... . ee ee eee ee XIV. 18 | 3836 fuscinervis, 9 Lecce eeeees XVI. 3 | 392

| wapotensis, Q «os... ee eee XIV. 2| 338 | Chelonus quadrimaculatus, Q vise. XVI. 5 | 393

| -—— pulehripes, Q ........0..-.. XIV. 3} 838 basimacula, 9 .............. XVI. 6 | 394

* Ephiosoma mexicanum on the Plate.

t+ Nonus niger on the Plate.

§ Iphiaulax capetillensis on the Plate.

+ Not described in the text, and perhaps not really the 9 of B. albipalpis.

LIST OF PLATES.

Plate Fig. | Page. Plate. Fig.| Page.

Chelonus sonorensis, 9 ............ XVI. 4) 395 || Evania nitida, g ................ XVIII, ] 431

Microgaster mexicanus, 9 ........ XV. 24 | 397 trochanterata, 9 ............ XVII. 23; 431

Agathis cressoni, 9 .............. XVI. 9} 398 rugosa, 9 oe... . eee eee XVII. | 25} 432

violaceipennis, 9 ............ XVI. 8 | 3898 dorsalis ............ 0.00000. XVII. | 24] 433

chiriquensis, ¢.............. XVI. 7 | 899 erassa, ¢ ...... 2... eee XVIII. 2) 433

albispina, S................ XVI. 10 399

—— tibialis, 9.0... ol, XVI. 13; 400 TRIGONALIDA.

ferrugineus, 9 .............. XVI. 11 400 . a .

Earinus erythropoda, QO lee eee, XVI. 20 | 400 || Trigonalys championi.............. XX. 24 | 472

Microdus melanostoma, ¢.......... XVI. 15 401

championi, ¢ .............. XVI. 12; 402 PELECINID®.

peronatus, ¢ .............. XVI. 16} 403 :

femoratus, 9 .............. XVI. 17; 404 Pelecinus polyturator, é — a yar 3 ee

——~- basimacula, @ ............., XVI. 19 | 405 , - .

simulatrix, Q@ .............. vu 7 oe Procrorrupip a.

montivagus, 9 .............. XVL. 18 | 407 jj Scelio erythropoda, 29 ............ XVIII. | 16) 486

Macrocentrus delicatus, ¢.......... XVIL. 5 408 Trimorus luteus, Dee c eee eee XVIII. 20 436

Zele fuscicornis, 9................ XVII. 4; 409 Paramesius fasciatipennis, Ov. XVIII. 18 | 437

Opius mexicanus, 2 .............. XVII. | 14] 409 maculipennis, ¢ ..........., XVIIl. | 11] 438

Toxoneuron seminigrum .......... XVII. 7| 411 ||— i. XVIII. | 12] 488

croceuM...............000., XVII 8 | 412 || —— canaliculatus, 9 ............ XVIII. | 24} 489

Olixon testaceum, 9* ......,...., XVI. 21] 413 chiriquensis, 9 .............. XVIII. | 15} 489

Alysia pulchripennis, ¢ .......... XVI. 24 | 413 | Spilomicrus tinctipennis, 9 ........ XVIII. | 17] 440

xanthoptera, d.............. XVI. 23 | 413. || Gonatopus testaceus, 9 ............ XVIII. | 22] 440

longicornis, ¢ .............. XVI. 22 | 414 ee XVIII. | 23} 440

erythrogaster, ¢ ............ XVI. 25 | 414 palliditarsis, 9 .............. XVIII. | 21] 441

championi, ¢ .............. XVI. 3 | 414 albomarginatus.............. XIX, 1{ 441

Cenoccelius filicornis, 29 ............ XVII. 9} 417 orbitalis..............0.000., XIX. 3} 449

nigriceps, Q ........ 0... cee XVII 13 {| 417 dromedarius .,.............. XIX. 21 443

chontalensis, 9 .............. XVII. 12; 418 apicalis 6... .......... 000008 XIX. 4] 443

——pulcher, gd .........., eee XVIT 10 418 - . : 444,

ve tipennis, 9. XVIL 11] 418 Dryinus maculicornis.............. XIX. 5 { 473

alticola .......... 20.00.0000, XIX. 6 | 444

g ——— tuficeps ............0..000., XIX. 7 | 445

TEPHANIDE. —— melanocephalus.......... Laas XIX. 15 | 446

Megischus annulator, ¢ .......... XVIII 7 419 —— FC: XIX. 26 446

9 DQ cee ccenceeeecceee XVIII 8 | 419 || -—— nigricans ................0, XIX. 8 | 446

niger, @ wo... eee eee eee XVIII 19 | 420 chiriquensis ................ XIX. 9| 447

ruficeps, Q oe... eee eee. XVIII 9{ 420 albitarsis ...............0.. XIX. 10 | 447

Monomachus ruficeps, 9 .......... XVIII 6 | 422 || Apenesia flavipes, 9 .............. XIX. ll} 449

Epyris rugifrons.................. XTX. 12] 449

Evaxre erythropoda ................ XIX. 14} 450

“ Viridis 2... .. cee eee XIX. 16 | 451

Aulacus ruficollis, Q .............. XVIII. | 10 | 423 || —- nitidiceps .................. XIX. 17 | 451

Gasteruption maculicorne, @ ...... XVIIL. 5 | 424 testaceipes.. 2... 2... ee eee. XIX. 18 | 452

sericeum, Go .... eee eee eee XVIII. 4 | 424 || —— multicarinatus .............. XIX, 13 | 452

9 Qe ccc c cece ene eees XVITI. 3 | 424 || —— bugabensis.................. XIX, 19 | 453

| Evania tinctipennis, Q ............ XVII. 16 | 425 guatemalensis .............. XIX, 20 | 453

albofacialis, do .......... cue XVII. 17 | - 426 Parasierola lata ...........-0.005. XIX, 21 454

albispina, g ....... eee eee, XVII. 18 | 427 OPACA.. eee ee ee cece ee eee XIX. 23} 454

—— Yugifrons, gd ...........00ee. XVII. 19 | 428 palliditarsis ................ XIX. 22 2

ornaticornis .............00. XVII. 20 ; 429 ws age 9. 455,

—— marginata, 9 .............. XVIL 211 430 Mesitius longicollis .............. XIX. 24 { 473

varicormis, Gow... ee eee eee XVII. 22 | 430 || Calyoza(?) westwoodi, g .......... XIX, 25 | 456

* Wrongly marked as ¢ on the Plate.

xii

LIST OF PLATES.

Plate. Fig.| Page. Plate. Fig.| Page.

Chrysis sonorensis ................ XX, 9 | 461

CuRYSIDIDZ. quadrituberculata............ XX, 7 | 461

parvula .............. eee, XX. 6 | 462

Amisega cuprifrons .............. XX. 2| 457 corulans ........eeee eee eee XX, 11 | 464

Notozus nitidus .................. XX. 3 | 458 pamamensis ...........-065. XX. 8 | 464

Hedychridium guatemalense........ XX. 4 | 459 || —— pilifrons..................4. XX. 13; 465

Miliare ........ 0.0.0 eee XX. 5 | 459 PFOXIMA.. 1... eee ee ee eee XX. 12) 465

Chrysis mexicana ................ XX. 10 | 460 | Parnopes fulvicornis .............. XX, 1 | 466

Page

ERRATA ET CORRIGENDA.

for melanosoma read melanostoma.

for leucosoma read leucostoma.

for Angang read Angangueo in Michoacan.

for Cuantla read Cuautla.

for testaceiceps read testaceus.

for A. read S.

for mexicana read mexicanus.

for leucosoma read leucostoma.

before Tab. II. fig. 10, 9, insert B. cerulea,

for Pacrnosoma read Pacrrosroma.

for Pecilosoma read Pecilostoma.

-after basimacula. add (Tab. XX. fig. 14.)

after rufiventris. add (Tab. LV. figg. 4, 4a, b.)

after facialis. add (Tab. IV. fig. 5.)

for Karsh read Karsch.

for Atitan read Atitlan.

for Halcitella read Hulticella.

Page

467

470

Line

13,18 for Phasgonophora read Phasganophora.

for 5. read V.

for XIV. read IV.

for luteogaster read flaviventris.

before Tab. V. insert Schizaspidia furcatu,

after mexicanus. add (Tab. VIII. fig. 1.)

after suffultus. add (Tab. VIII. fig. 2.)

for trunculentus read truculentus.

for leucosoma read leucostoma.

for XX. read XI.

after grallator. add (Tab. XII. fig. 7.)

for Q read S.

after fig. 23, g, add ; Tab. XVII. figg. 1 a-c.

for Buguba read Bugaba.

after Had. add Guatemaa, Mirandilla (Champion) ;

after Mrxico add , Cordova.

for 1. read 3.

19 after Isparta (to follow the genus Anacharis), add beneath

Ibaha, Latreille, Gen. Crust. et Ins. xiii. p. 205 (1805).

BIOLOGIA CENTRALI-AMERICANA.

ZOOLOGIA.

Class INSECTA.

Order HYMENOPTERA.

SESSILIVENTRIA.

Fam. TENTHREDINIDA.

Subfam. TENTHREDINA.

This subfamily contains the Sawflies, which have two radial and three or four cubital

cellules, of which the second (or first when there are only three) and third (or second

when only three are present) receive each a recurrent nervure, both recurrent nervures

never being received in one cellule; the lanceolate cellule is never petiolate; the

antenne usually 9-jointed, more rarely 7—15-jointed; and the larvee have twenty-two

legs.

TENTHREDINIDES.

This group includes the species which have the posterior spurs longer than one third

of the length of the metatarsus; the antenne are 9-jointed; the mandibles are large,

acute, and provided with two or three teeth, besides the apical one. The wings have

two radial and four cubital cellules, while the lanceolate cellule has usually a short

straight nervure: very rarely there is an oblique one; and not uncommonly it is sub-

contracted; in no case’ is it petiolate. The basal nervure is joined to, or received

very close to, the cubital. The larve are never ornamented to any extent; the vast

majority of them are some shade of green, brown, or black on the upper half of the

body, the lower half being paler; most of them eject a brownish liquid from the

-mouth when alarmed. The pupa state is passed in the earth, protected by an earthen

cell, which may or may not be strengthened by silk. Although this subtribe is very

numerously represented in the Nearctic Region, where the species are very numerous,

one hundred and thirty-nine being recorded in Kirby’s Catalogue, yet only one species

is known from the Neotropical Region.

BIOL. CENTR.-AMER., Hymenopt., May 1883. BB

2 HYMENOPTERA.

MACROPHYA.

Macrophya, Dahlbom, Conspectus Tenth. Siri. et Oryss. Scand. p. 4.

The species of this genus have a wide geographical range. Fifty species are known

from the European fauna, principally from the south; they also occur in Japan, in

the Oriental Region as far south as Southern India, while thirty-eight species inhabit

North America.

1. Macrophya trisyllaba.

Allanius trisyllaba, Norton, Trans. Amer. Ent. Soc. i. p. 273; Cat. of the Tenth. and Urve. of

N. Am. p. 136°

Macrophya trisyllaba, Cresson, Trans. Amer. Ent. Soc. viii. p. 61°.

Hab. Nortu America, Canada 2, United States 1.—Mexico ?.

SELANDRIADES.

This section differs principally from the Tenthredinides in the mandibles being weak,

short, and without subapical teeth, and in the spurs being shorter than one third of

the length of the metatarsus. ‘The wings have two radial cellules and three or four

cubital; the lanceolate cellule has never a straight nervure, but may have an oblique

one; usually it is contracted or petiolate. The posterior wings, with one or two genera,

have two median cellules, more often only one or none.

The species of this group have a much wider range than the Tenthredinides; for they

are found in the Australian, Ethiopian, and Neotropical Regions, from which the latter

are altogether absent, except one species in the last-mentioned region.

SIOBLA.

Siobla, Cameron, Trans. Ent. Soc. 1877, p. 88.

This genus connects the Tenthredinides with the Selandriades. Most of the species

have the body-form of Tenthredo, but differ otherwise in having the spurs much shorter,

the transverse basal nervure received very close to, but not touching, the cubital nervure,

and by the lanceolate cellule being much wider, and provided with a comparatively

large oblique or semioblique cross nervure. It agrees very closely with Strongylo-

gaster, from which it is only to be distinguished by the cross nervure in the lanceolate

cellule. The general neuration is identical with that of Eriocampa; but the wings and

body are more elongated, the antenne are longer and filiform and have the third and

fourth joints subequal, while in Hriocampa they are short and thick, with the third.

joint much longer than the fourth. The clypeus in Stod/a is truncated or but slightly

incised at the apex, and the eyes may or may not reach to the base of the mandibles,

The mandibles are stout; the apical tooth is large and forms two thirds of the mandibles ;

there is a blunt, short, subapical tooth. The palpi are long; the basal joint of the

SIOBLA. 3

maxillary is small, the second is much shorter than the third and slightly shorter than

the fifth, which is dilated at the apex, and is a little longer than the sixth, which is a

little shorter than the second, the third is the longest; the basal joint of the labial

_palpus is the longest, the third and last are thicker than the others, the third is a little

longer than the fourth and shorter than the second. The outer lobes of the labium

are broad and truncated at the top; the inner lobe of the maxilla is straight on the

outer side, more rounded on the inner, and curves gradually and roundly on the top;

the outer lobe is long and narrow, and terminates in a sharp point.

Norton describes eight species under Strongylogaster, which are presumably to be

referred to Siobla. He describes the males as having the hind wings provided with

only one or no discal cellule; but I presume this is so through the nervures being

situated along the edge of the wings. Some species, however, have undoubtedly two

discal cellules as in the females.

Another North-American species is referred by Norton to Macrophya, just as a

European species has been so referred, because the coxe are rather large; but it seems

impossible to use the size of the hinder coxe as a generic character when dealing with

Neotropical forms, however useful it may be when dealing with Palearctic or Nearctic

species ; for it is impossible to draw the line between a moderately sized and an extra

large one, so many intermediate forms occur.

Stobla is found in Japan, Burmah, West Yunan, Amoor, and Europe; and Kirby

describes a species from Georgia.

1. Siobla ornaticornis. (Tab. I. f. 16, ; 164, antenna; 164, head, from the

front.) ; |

Nigra, antennarum articulis 6°-9" et basi, scutello, tegulis, pronoto, pleuris abdomineque subtus albis ; abdomine

superne nigro, segmentorum marginibus albis; pedibus rufescentibus, basi pallida; alis hyalinis, stigmate

fusco, basi pallida.

Long. fere 11 millim.

Hab. Guatema.a, San Gerénimo (Champion).

The antenne are filiform, shortly pilose, longer than the abdomen ; third joint a little

longer than the fourth, the third apical shorter than the preceding. Clypeus incised.

Sutures on vertex very deep and distinct ; frontal area a mere depression surrounding

the lower ocellus. Antennal fovee deep, but ill defined. Head broad, scarcely pro-

jecting behind the eyes, which are oval; the face is short. On the mesopleura there

is a black perpendicular line beneath the tegule, and an oblique one commencing at

the fore wing ; the breast is black, as is also the greater part of the prothorax; the

coxe and trochanters are white, as are also the hinder tarsi; the four anterior tarsi are

black at the apex. Claws simple. There is a thin transverse white line on either side

of the postscutellum ; the white lines at the junction of the abdominal segments

above are wider at the sides. The wings are pilose; the costa is only black between

the transverse basal nervure and the stigma; the transverse radial nervure is received

BB 2

4 HYMENOPTERA.

in the apical fourth of the wing, the transverse median a little in front of the middle

of cellule; the third cubital cellule is a little shorter than the second ; accessory nervure

in posterior wing appendiculated.

In the male the breast is brown, black behind; the coxe are marked with black

at the base.

STRONGYLOGASTER.

Strongylogaster, Dahlbom, Consp. Tenthr. pp. 4, 13 (1835) ; Hartig, Blattw. p. 299.

The European species of Strongylogaster are only to be distinguished from Selandria

by the former having the body “ longish, cylindrical, and the costa not dilated before

the stigma,” while the latter has the body ‘short, thick, and the costa thickened and

dilated before the stigma.” These characters (not quite satisfactory even with Euro- —

pean species) fail altogether with the Neotropical forms; and I have not been able

to find other characters to distinguish them. I have not, however, united the two

genera, but have, as a matter of convenience, retained Selandria for the species with

short stout bodies. The species I have included in Strongylogaster differ in the form of

the antenne, some having them long, pilose, and slightly thickened beyond the middle,

while with others they are short and thick ; the eyes, too, may or may not reach close to

the base of the mandibles; the metatarsus is longer than all the outer joints together,

which is never the case with Palearctic species; and the clypeus is truncated. The

mandibles have a sharp apical tooth; there is only one subapical tooth, and its edge

is curved. The basal joint of the labial palpi is the longest and thinnest; the second

is nearly the size of the fourth; the third is the shortest, and is broader than the

others. The maxillary palpi are long; the second and sixth joints are shorter than

the intermediate, and nearly of equal length ; the intermediate joints are also subequal ;

but the relative lengths of the joints vary.

Nothing is known about the habits of the American species of Strongylogaster ; but

the majority (and probably the whole) of the European species feed during their larval

life on ferns. Nine European species are known, one from Japan, one from Siberia,

another from Singapore, and twenty-one from America north of Mexico. America

would thus seem to be the head quarters of the genus.

1. Strongylogaster apertus.

Tenthredo aperta, Kirby, List of Hymen. i. p. 320, t. 7. f. 16.

Hab. Mexico, Orizaba.

2. Strongylogaster picticornis.

Niger, albido-pictus, abdomine testaceo, dorso medio nigro, pedibus pallide testaceis; alis hyalinis, costa et

stigmate testaceis.

Long. 2 8 millim., ¢ 6 millim.

STRONGYLOGASTER. 5

Hab. Guatemata, Capetillo, San Gerénimo (Champion).

Antenne longer than the abdomen, pilose, filiform, very slightly thickened in the

middle; third joint thin; the basal joint and the apex of the fourth to seventh white ;

clypeus, labrum, palpi, and mandibles, except at apex, white. Clypeus incised, the

sides acute. Eyes slightly converging. Frontal area and sutures on vertex flat; central

fovea over antenne deep, the lateral ones less distinct. Mesonotum black, save the

scutellum and the greater part of the middle lobe, which are white; pleure white, a

longish, broad, oblique stripe, a smaller broad one on mesopleura, and one over the

middle coxe slightly longer than broad, black; breast black in front, the black

extending down the middle as a thin line, which joins a transverse broader line at the

apex; the parts on each side of the central line testaceous. Abdomen testaceous, the

greater part from the apex of basal segment black. Of the legs the coxe and

trochanters are white, the posterior trochanters are marked with black on the under-

side; the tarsi are paler than the tibie. The third cubital cellule is shorter than the

second, wider at the apex than at the base, and receives the transverse radial nervure

a little beyond the basal third of the cellule; the second cubital cellule has a horny

point; the transverse median nervure is received a very little beyond the middle of

the cellule. Accessory nervure in hind wing shortly appendiculated. The head is

broader behind than in most of the species, and retreats on each side of the antenne.

The male has the greater part of the breast testaceous, and the abdomen has no black

on the upperside.

3. Strongylogaster v-flavum.

Niger, longus, flavo variegatus, antennis basi pedibusque pallide testaceis ; femoribus posticis supra nigris; alis

fusco-hyalinis, stigmate testaceo, cellula cubitali tertia longiore quam secunda. @.

Long. fere 10 millim.

Hab. GuateMALA, San Gerénimo (Champion), female; Panama, Volcan de Chiriqui

3000 to 4000 feet (Champion).

Antenne shortly pilose, nearly as long as the abdomen, black, the three basal joints

testaceous, the third about one third longer than fourth, fourth longer than fifth, the

four apical subequal, the sixth thicker than the following. Clypeus incised, but not

deeply; mandibles, palpi, labrum, and clypeus white; the apex of the mandibles

black; the space between the antenne and inner orbits of the eyes toa little above

the middle testaceous. The borders of the middle lobe of the mesonotum broadly,

a line (broadest behind) on inner side of lateral lobe, one proceeding from near the

tegule to the scutellum, scutellum and postscutellum yellowish testaceous; tegule,

pronotum, a large triangular mark on mesopleura, and an oblique line joined to the

middle coxe yellow; a round testaceous mark above posterior cox. The abdomen i8

testaceous, marked above with black transverse lines, which become broader and closer

towards the apex. The coxe and trochanters are white, the posterior coxe black

6 HYMENOPTERA.

behind on the upper half; the posterior femora are broadly black above and at the

sides, the posterior tibia more or less black in the middle. The third cubital cellule

is perceptibly longer than the second, which has a distinct horny point; the transverse

radial is received not far from the third transverse cubital, the transverse median a

very little in front of the middle of the cellule. There is a distinct bulla in the first

transverse cubital nervure, and a less clearly marked one in the lower part of the

transverse radial. The nervures are black, the costa and stigma testaceous.

What I take to be the male (from Chiriqui) has the coloration pretty much as I have

described ; but the antenne are apparently shorter, and the third cubital cellule is

perceptibly shorter than in the female*. The quantity of black on the posterior

femora varies. Jn some specimens, too, the pleure are entirely testaceous; in others

there is only an irregular splash in the centre. The amount of black on the back of

the abdomen varies also.

4. Strongylogaster illuminatus.

Strongylogaster illuminatus, Norton, Trans. Am. Ent. Soc. ii. p. 222; Cat. p. 154. 18 ¢ 9°;

Cresson, loc. cit. viii. p. 62.

Hab. Mexico, Cordova (Saussure).

5. Strongylogaster letus. (Tab. II. fig. 3,9; 3a, antenna.)

Letus, niger flavo variegatus, antennarum basi pedibusque flavo-albidis; femoribus posticis supra nigris; alis

hyalinis, stigmate testaceo; cellula cubitali tertia breviore quam secunda. 9.

Long. fere 8 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

The antenne are pilose, not much longer than the abdomen, thick, distinctly

attenuated and pointed at apex; basal joint not much longer than second, third not

much longer than fourth ; basal joint white, second, third, and base of fourth testaceous.

Face and mouth yellow, the yellow extending above each side of the antennal fovea ;

clypeus slightly and broadly incised. On the thorax, the pronotum, a large triangular

mark on mesopleura, a narrow one at the junction with the metapleura, the edges

of the middle lobe of mesonotum, scutellum, a triangular mark behind it, and post-

scutellum are yellow; there is a fulvous line on each side of the scutellum (proceeding

in the direction of the tegule), and a transverse one on either side of postscutellum.

Abdomen fulvous-testaceous, a broad transverse band at base yellow; a broad trans-

verse band next to the blotch, two narrower and interrupted ones behind it, and the

greater part of the apical third above and beneath black; extreme apex and sheath

yellow. The hinder femora are lined above with black; the rest of the legs yellowish

festaceous. Costa and stigma testaceous, the lower half of stigma yellow; nervures

black ; the third cubital cellule is distinctly shorter than the second. There is a bulla

* This would appear to be a sexual character with the Neotropical Selandriades.

STRONG YLOGASTER. 7

in the first transverse cubital nervure; the transverse median nervure is received a little

‘in front of the middle of the cellule. The sutures on vertex are narrow, but deep; the

frontal area clearly defined above, less so on lower side. The central fovea is very large,

the lateral longer and deeper, but less clearly defined.

A shorter, broader insect than S. v-favum, the antenne shorter and thicker, the

third joint shorter compared with the fourth; the cubital cell is shorter, the wings

clearer, &c. In S. letus, behind the eyes, there is thick fulvous hair, which becomes

black on the vertex; the central antennal fovea is much more clearly defined than in

S. v-flavum, but not the lateral ones.

6. Strongylogaster inconspicuus.

Selandria inconspicua, Kirby, List of Hymen. i. p. 190, t. 8. f. 24°.

Hab. Mexico}, Orizaba.

7. Strongylogaster testaceicornis.

Niger, antennis (apice excepto), ore, tegulis, linea tenui marginali pronoti, maculis pleuralibus, scutello, abdo-

minisque basi testaceis; pedibus pallide testaceis, coxis basi, femoribus tibiarumque posticarum apice -

nigris ; alis flavescentibus, costa et stigmate testaceis.

Long. 9 millim.

Hab. Costa Rica, Irazu 6000 to 7000 feet (Rogers).

Vertex faintly punctured, covered with a fulvous pile; frontal and antennal foves

and sutures indistinct. The antenne are shorter than the abdomen, thickened in the

middle; the last joint considerably thinner than the eighth, the third longer than

fourth. Clypeus slightly incised at the apex. On the mesopleura there is towards the

hinder end a broad, obscure, testaceous spot; below it is an oblique thinner one

following the division of the mesopleura ; and there is a smaller one on the metapleura.

The blotch is large and broad; the three basal segments are entirely testaceous at the

sides and beneath; and at the apex of the second and third segments above, the

testaceous colour forms two distinct bands. The transverse radial nervure is almost

interstitial; the second and third cubital cellules are almost equal in length; the

transverse median nervure is received close to middle of the cellule. Claws simple.

The male has the antenne black above throughout, the middle joints are dark

testaceous ; the costa and stigma are dark testaceous; the basal segment of abdomen

is broadly testaceous above ; and the posterior tibize fuscous, except the basal third.

A much narrower and somewhat longer insect than S. Jetus, with the vertex punc-

tured, frontal area more clearly defined, face shorter, and thorax slightly punctured

and more pilose.

8 HYMENOPTERA.

8. Strongylogaster pilicornis. (Tab. II. fig. 1,2; 14, head, from the side;

16, from front; 1¢, claws.)

Niger, nitidus, pilosus, antennis longis, pilosis; facie, pronoto, metapleuris, abdomine (apice excepto)

pedibusque luteis; tarsis posticis tibiarumque apice nigris; alis flavo-hyalinis, apice fusco, costa et

stigmate testaceis.

Long. 11 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000. feet (Champion).

Head not transverse in front, sutures on vertex deep, frontal area small but deep,

broader at apex than base, with a clear suture round the ocellus at the sides. Antennal

tubercles large, projecting, lateral fovea small; central deep in the centre, from which

it projects sharply before and behind. The antenne are long, filiform, densely pilose,

attenuated at the apex; basal joint with a short pedicle, which is white, more than

double the length of the second; third joint a little longer than the fourth, the last

joint longer and thinner than the eighth. Face from the antennal fovea, labrum, clypeus,

and mandibles (except at apex) testaceous. ‘The mesopleure are black, except a spot in

front, below the wings, the metapleure yellowish; metanotum black; the three apical

segments of abdomen and sheath, which is hairy, black. Wings large; nervures fuscous,

darker at apex; the transverse radial nervure is received a little in front of the middle

of the third cubital cellule; there isa bulla on the transverse radial and second and third

transverse cubital; the transverse median nervure is received a little beyond middle of

the cellule ; a single spurious vein proceeds from the radial bulla, and a double one from

that on the second transverse cubital, through the bulla on the third to the apex of the

wing. The claws are bifid, the spurs a little more than one third of the length of

the metatarsus, the posterior fuscous.

The largest of the Central-American species.

9. Strongylogaster pilipennis.

Luteus, capite (ore excepto), antennarum apice, mesonoto fere toto, sterno abdominisque apice nigris; alis

nigris, medio flavo-hyalinis, stigmate luteo.

Long. 103 millim.

Hab. Chiriqui, David (Champion).

The sutures on the vertex are deep and wide, the frontal narrower and not so deep ;

the frontal area is not depressed; there is only an indistinct furrow round the lower

ocellus; the central fovea is large, roundish, and shallow. The clypeus is almost

transverse ; it, as well as the labrum, is white; the apex of the mandibles piceous. The

eyes project considerably, converge towards the lower side, and reach close to the

mandibles. The head is large, retreats slightly in front and considerably so behind.

The middle lobe of the mesonotum is testaceous ; the lateral lobes are black, as is also the

scutellum, except at the apex, where it becomes brownish. The metanotum is brownish

testaceous. ‘The transverse radial nervure is received in the apical third of the cellule;

STRONGYLOGASTER. 9

the second cubital cellule is much narrower and longer than the third, and has a

fuscous horny point; the costal cellule has a larger black horny point; the transverse

median nervure is received a good piece before the middle of the cellule. The black

basal portion of the wing ends before the termination of the costal cellule and at the

horny point; the black apical part commences before the apex of the stigma. The

accessory nervure in posterior wing is shortly appendiculated. The apices of all the

tarsi (but especially the posterior) and the apex of the hinder tibie are black. The

claws are bifid. ;

This species is not unlike S. maculipennis, but is easily known from it by the third

cubital cellule being shorter than the second, the opposite being the case with S. maculi-

pennis, by the apical half of the antenne only being black, the fifth, sixth, and seventh

joints not being produced at the apices; the face has less white, and the thorax less black ;

the apex only of the tarsi is black; and the transverse median cellule is received nearer ©

the base of the cellule. The head, too, is much longer.

10. Strongylogaster maculipennis. (Tab. I. f. 8,2.)

Niger, nitidus, pilosus, facie ‘alba; pronoto, metapleuris, abdomine (apice excepto) pedibusque luteis; tarsis

posticis tibiarumque apice nigris ; alis fuscis, medio flavo-hyalino, stigmate et costa flavis.

Long. 9-10 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet, Bugaba (Champion).

The antenne have the two basal joints luteous, pilose, thickened from the fourth

joint ; the apex of sixth, seventh, and eighth produced into a blunt point beneath, more

especially the sixth. The face from below the frontal area is white. On the thorax

the greater part of the mesopleura and sternum are black, as is also the meso- and

metanotum, except the angles of the lateral lobes. Wings with extreme basal part

of costa luteous, the rest to near the stigma black; the transverse radial nervure

is received near middle of cellule; the bulle and spurious veins as in S. pilicornis ;

transverse median nervure received a piece in front of middle of cellule; the third

cellule longer than the second, which is considerably angled where the recurrent nervure

is received in front of middle of cellule. he apical fuscous cloud commences at the

end of stigma; the basal one ends a little in front of median cellule; there is a small

fuscous cloud at end of lanceolate cellule. In the hind wings the basal cloud is

narrower than in front wings; there is a fuscous mark below the apex of anal cellule.

The middle tarsi have the four apical joints black. In the second cubital cellule

characteristic is the large horny point. The mesopleuree are sometimes. nearly all

yellow. The vertex is raised; but the sutures are depressed equally to the eyes; the

frontal area is not well defined. The lateral fovese are small, and raised in the centre ;

the front is depressed considerably; the central fovea small but deep, and broader

than long.

BIOL. CENTR.-AMER., Hymenopt., May 1883. cc

10 HYMENOPTERA.

11. Strongylogaster melanogoma.

Luteus, antennis pilosis; antennis, capite, mesonoto, metanoto, mesopleuris pedibusque 4 posterioribus fere

totis nigris; alis flavo-hyalinis, apice fusco.

Long. 83 millim.

Hab. Panama, Volcan de Chiriqui (Champion).

The antenne are as long as the abdomen and half of the thorax; the third joint is

one fourth longer than the following, filiform, scarcely thickened towards the middle.

Labrum brownish ; three apical joints of palpi testaceous, the rest black. All the coxe

and trochanters are yellow; the rest of the four posterior legs are black, save the knees

and metatarsi of the middle pair, which are testaceous in the middle; the anterior

femora are lined behind with black; the tibiee have a black line interrupted behind in

the middle, the apex black all round; the tarsi black, save the basal three fourths

of metatarsus. The transverse radial nervure is received a little in front of the middle of

the third cubital cellule, the second recurrent is almost interstitial ; and the transverse

median is received in the middle of the cellule. Claws bifid. The vertex is conside-

rably raised, especially behind the ocelli, there being also a depression between the two

upper ones; the frontal area is raised, is longer than broad, round at upper end, where

there is a small furrow leading into it; the apex is more angled at the sides, and

transverse at the point. The lateral fovee are large, the central fovea smaller and with

a tubercle occupying it almost entirely. Eyes converging at bottom in front,

Besides the difference in the colour of the mouth and thorax, NS. melanodoma differs

from S. melanocephalus in having the transverse radial nervure received “nearer the

middle of the cellule, the second recurrent nearer the second transverse cubital, and

the transverse median nearer the middle of cellule.

12. Strongylogaster melanocephalus. (Tab. IT. fig. 2, 2.)

Luteus, nitidus, pilosus, capite (ore excepto), meso- et metanoto fere totis, pedibusque 4 posterioribus nigris ; alis

flavo-hyalinis, apice leniter fumatis, stigmate testaceo. ©

Long. 10 millim.

Hab. Guatemata, Senahu in Vera Paz (Champion).

Frontal area large, rounded at apex, narrower at base. Lateral fovee large, central

one not indicated ; but there is a semicircular suture above the antennal tubercle, which

is large. Eyes converging. ‘The antenne are slightly longer than the abdomen and

metathorax, somewhat thickened towards the middle, attenuated at the apex, and

covered with a close, stiff, microscopic pile. The labrum, clypeus, and base of mandibles

are white. On the mesonotum the outside of the middle and the lateral lobes are

luteous, this being also the case with the metanotum at the sides. The anterior tarsi are

fuscous at the apex; the rest of anterior legs pale yellow, as well as the four posterior

cox; trochanters and base of femora, the knees, and middle tibie dull testaceous in

front; all the spurs are pale luteous. The costa is dull testaceous; the nervures

STRONG YLOGASTER. lI

luteous, except at the apex, where they are blackish. The head and thorax are

covered with a close, stiff, white pubescence, which is especially long on the face; the

legs also are pilose. The apical fourth of the abdomen is darker than the rest; but

this may be an accidental discoloration. The apex of sheath black, pilose. The

transverse median nervure is received beyond the middle of the cellule. The vertex is

considerably raised, especially behind the ocelli, there being also a depression between

the two upper ones; the frontal area is raised, longer than broad, rounded at upper

end, where there is a small furrow leading into it; the lower end is more angled at the

sides. ‘The lateral foveee are large, the central fovea smaller and with a tubercle

occupying it almost entirely. Eyes converging at bottom in front.

13. Strongylogaster nigriceps.

Luteus, antennis, capite (ore excepto), abdominis apice, tarsis 4 posterioribus et tibiarum dimidio apicali

nigris; alis flavo-hyalinis, apice fuscis, costa stigmateque testaceis, apice nigro.

Long. 9 millim.

Hab. Guatemaa, San Gerénimo (Champion).

Frontal area very faintly indicated, ovoid. Lateral fovee large, deep, with a small

tubercle in the centre ; central large, semicircular, with a minute tubercle at its apex.

Eyes converging. (Clypeus transverse. The antenne are distinctly thickened in the

middle, slightly attenuated at the apex, and pilose. The costa, stigma, and nervures

are yellowish, save in the blackened apical portion, which commences in the middle of

the stigma. At the lower part of the radial, and in the lower parts of the cubital and

apical cellules, run spurious veins, which follow, to a certain extent, the course of the

nervures, and pass through bulle in the radial, third and fourth transverse, and second

recurrent nervures; those in the cubital cellules originate in a single vein, which

bifurcates a little beyond the second transverse cubital nervure. The anterior tarsi are

fuscous at the apex, the middle and apex of middle tibie black.

Apart from the coloration, 8. nigriceps may be known from S. melanocephalus by the

longer and thicker antennez, longer and more curved spurs, and stouter tibie and tarsi.

14, Strongylogaster frontalis.

Testaceus, antennis, capite pro parte, abdominis apice, tibiarum apice tarsisque nigris; antennarum basi, ore

pedibusque albidis ; alis fumatis, costa stigmateque nigris.

Long. 8 millim.

Hab. Panama, Bugaba (Champion).

The antenne are rather slender, pilose, nearly as long as the thorax and abdomen ;

the third joint is not much longer than the fourth. The lateral furrows behind the

vertex are deep; the lower ocellus is in a roundish depression. The lateral frontal

fovee are large and round; the central is much smaller. ‘The clypeus is truncated.

Behind the head is black; in front it is black along the inner orbits of the eyes above

ce 2

12 HYMENOPTERA.

and behind the ocelli; the mandibles piceous. The second cubital cellule is as long as

the third to the transverse radial nervure; the transverse median is received in the

middle of the cellule. The bulle are as in S. Jutews; and in one specimen the first

transverse cubital nervure is completely absent. Claws simple; metatarsus longer than -

the other joints together. |

This species is related to S. luteus; but differs in its shorter and, if any thing,

broader body, more slender antenne, longer metatarsi, much longer third cubital

cellule, &c.

“15. Strongylogaster luteus.

Luteus; antennis (basi excepta), capite, tibiarum apice tarsisque nigris, ore pedibusque albo-testaceis; alis

fumatis, costa stigmateque nigris.

Long. 8 millim.

Hab. Panama, Bugaba (Champion).

The lateral furrows on the vertex are deep, especially behind the ocelli, but they do

not extend back the whole length of the vertex; the central one is absent. The frontal

area proper is not defined; but the lower ocellus is situated in a large hollow. The

lateral antennal fovee are large, deep, and circular; the central obsolete, or nearly so.

The clypeus is truncated at the apex, and rounded at the edges., Mandibles piceous.

The antenne are a little longer than the abdomen and half the thorax; the basal joint

has a pedicle, and is (not counting the pedicle) a half longer than the second; the third

is longer than the fourth; the two apical are as long as, but thinner than the two

preceding. The second cubital cellule is shorter than the third, and has a distinct

horny point. ‘There is a bulla in the transverse radial, in the first transverse cubital,

and in the cubital nervure at its union with the first recurrent nervure. The transverse

median nervure is received towards the apical third of the cellule. The metatarsus is

nearly -as long as the rest of the joints together. The claws are not bifid.

Allied to S. tibialis, S. nigricornis, and S. meritorius, but easily known from them by

the entire absence of black from thorax and abdomen. It is also a larger and broader

insect ; and the transverse median nervure is received nearer the apex of the cellule than

in any of the three.

16. Strongylogaster leucosoma, (Tab. I. fig. 7,9.)

Luteus, antennis pilosis; capite, antennis, tarsis 4 posterioribus et tibiarum dimidio apicali nigris; antennis

basi oreque albis; alis fuscis, costa stigmateque nigris.

Long. 63 millim.

Hab. Guatemata, San Isidro (Champion).

Frontal area large, flat, but with the sides sharply defined. Antennal fovee appearing

as large shallow depressions. Clypeus slightly incised. Eyes almost parallel. Antenne

longer than the abdomen, thick, scarcely attenuated towards the apex, densely pilose ;

STRONG YLOG ASTER. 13

second joint longer than broad, thicker at apex than at base; third joint about one

third longer than fourth. Tegule testaceous. Third cubital cellule not longer than

second, with one faint spurious vein; third transverse cubital nervure with two bulle.

There is a horny point in the costal cellule. The claws have a subbasal tooth; the

anterior tarsi are fuscous. .

Similar to S. nigricornis, but broader and shorter; the antenne are white at the base,

thicker, and a little shorter; the third cubital cellule is shorter than the second, and

wider throughout than in 9. nigricornis; the wings are darker; and the abdomen has

no black dorsal band.

17. Strongylogaster tibialis.

Luteus, capite, antennis, macula mesonoti, abdominis apice, pectore, tarsis tibiisque 4 posterioribus nigris ;

alis fere hyalinis, costa stigmateque nigris.

Long. 84 millim.

Hab. Panama, Volcan de Chiriqui ( Champion)

Frontal sutures absent; frontal area scarcely indicated ; but there is a distinct furrow

round the lower ocellus. Lateral fovee large, with a tubercle in the centre; central

fovea much larger, and with a large square tubercle at apex. Eyes converging. Antenne

a little longer than the abdomen, thickened slightly in the middle, attenuated at the

apex, pilose. Third cubital cellule a little longer and narrower than the second, and

traversed by two spurious veins, which extend into the fourth cellule, where they end

beyond its middle; another pair of spurious veins are in the discal (apical) cellule ;

the transverse median nervure is received before the middle of the cellule. Claws

bifid; tegule testaceous.

A broader and somewhat shorter insect than S. nigricornis; the third cubital cellule

is longer compared with the second; antenne thicker in the middle, the second joint

more globular, and not much thinner than the first, while in S. nigricornis it is much

thinner, especially at the base; the spurs, too, are longer.

18. Strongylogaster nigricornis.

Rufus, capite, antennis, pectore, abdominis dorso medio, tarsis tibiarumque posticarum apice nigris; alis fere

fuscis, costa stigmateque nigris; ore albo.

Long. 9 millim.

Hab. Guatemata, Duefias (Champion).

Frontal area flat, the sides distinct, especially behind, where it is rounded; the apex

is wider and truncated ; lateral foveze longer than broad, without tubercles; central fovea

flat, nearly square, but rather broad at the apex. Apex of clypeus rounded. The

clypeus, labrum, mandibles, and palpi are white. The antenne are slightly thickened ;

the third joint thin, much longer than the fourth, thickened slightly at the apex ; two

basal joints thicker than it; the second thinner, especially at base, and a very little

14 HYMENOPTERA. ®

longer than first; four apical joints much shorter than the others, and closely pressed

together ; accessory nervure in hind wings appendiculated. Legs pale at the base, apex

of intermediate tibiee and tarsi black.. The second cubital cellule is longer and narrower

than the third, which is double the width of the base at the apex; the second has a

horny point; the transverse median nervure is received beyond the middle of the cellule.

Claws simple.

The male has the apex of the abdomen black above and slightly at the base; some-

times there is a black longitudinal mark on each of the lateral lobes of the mesonotum.

The black band on the dorsum of S. nigricornis is not continuous, being interrupted at

the junction of the segments. From S. ruficollis S. nigricornis differs in its longer and

thinner antenne, the third joint especially being longer and thinner, and in the

black posterior tarsi and apex of tibie; from S. fuscipennis it differs in the luteous

pleure and metathorax, white mouth, and appendiculated accessory nervure in the

hind wings.

19. Strongylogaster fulviventris. (Tab. I. fig. 13, 2.)

Strongylogaster fulviventris, Norton, Trans. Amer. Ent. Soc. i. p. 223; Catal. p. 154’.

Hab. Mexico, Angang (Saussure 1).

_. The frontal area is broad and not very deep; behind, the furrows meet at an angle;

the apex slightly curved; a blunt ridge runs from the sides at the apex towards the

eyes. The third cubital cellule is nearly one fourth shorter than the second.

20. Strongylogaster meritorius.

Strongylogaster meritorius, Norton, Trans. Amer. Ent. Soc. ii. p. 221'; Catal. p. 1538, 9 & 6;

Cresson, Trans. Amer. Ent. Soc. viii. p. 62.

Hab. Mexico, Cuantla, Tierra Caliente (Saussure1); GuaremaLta, San Gerénimo

(Champion).

The frontal area in thts species is sharply triangular; the sutures are deep, and

proceed down the sides of the frontal area. ‘The accessory nervure in hinder wing is

interstitial; the transverse median is received nearly in the middle of the cellule; the

second cubital cellule is distinctly longer than the third. 8. nigritorius is a larger and

stouter insect than it, and is easily separated from S. meritorius by its black breast

and by the row of black dots along each side of the abdomen.

21. Strongylogaster nigritorius. (Tab. I. fig. 14.)

Strongylogaster nigritorius, Norton, Trans. Amer. Ent. Soc. ii. p. 2227; Catal. p.154,9 $1; Cresson,

Trans. Amer. Ent. Soc. viii. p. 62.

Hab. Mexico, Cuantla, Tierra Caliente (Saussure).

The sutures on the vertex are deep; the frontal area is well defined and moderately

STRONGYLOGASTER. 15

deep; behind it is rounded, but not broadly; in front it is truncated, and angled at

the sides, and from each angle a ridge runs to the eyes, the space above this ridge

being shallow; the eyes have a suture immediately behind them above. The meso-

notum in front rises rather perpendicularly over the pronotum, as it does also with

S. meritorius ; the suture on the middle lobe is deep; it does not extend to the apex.

It is a stouter insect than S. nigricornis, which has the black marks on the dorsum

continuous; its wings are darker, the third cubital cellule is longer compared with the

second, while it wants also the black marks on the mesonotum.

22. Strongylogaster fuscipennis.

Rufus, capite, mesopleuris, metanoti medio, abdominis apice, tarsis tibiisque posticis nigris; alis fuscis, costa

stigmateque nigris. 9.

Long. 9 millim.

Hab. Mexico.

Frontal area and furrows not very clearly defined, the former rounded and ridged

behind, central antennal fovea deep, lateral indistinct; eyes oval, not reaching to base

of mandibles. The transverse radial nervure is received in apical third of third cubital

cellule, which is not much longer than broad, and much wider at apex than at base ;

there is a distinct horny point in the middle of second cubital cellule, which is longer

than the third; the transverse median nervure is received a little beyond the middle of

cellule; the accessory nervure in hind wing is very shortly appendiculated. The four

anterior coxee are pale, the posterior slightly darker, black at the base; the posterior

knees are black; posterior tibiz dark testaceous on underpart of basal fourth, the rest

black; spurs testaceous. The ventral surface is marked with transverse black bands

interrupted in the middle; on the basal half above there are fuscous transverse marks;

the three apical segments are entirely black. The two basal joints of antenne are

black; the rest are wanting.

May be known from S. tibialis and S. rujicollis by the shorter and much wider third

cubital cellule. From S. nigricornis the black mouth and pleuree and much wider

third cubital cellule distinguish it, as also the coxe being marked with black.

23. Strongylogaster ruficollis.

Niger, ore albido ; pronoto, mesonoto cum scutello, abdominis basi, tegulis pedibusque rufis ; alis fuscis, stigmate

et costa nigris. ¢ 2.

Long. 8 millim.

Hab. Guarema.a, San Gerénimo (Champion), several specimens.

Front punctured, vertex smooth, shining, frontal area indistinct; three antennal

fovee large, round. Eyes oval. The antenne are slightly shorter than the abdomen,

stout, shortly pilose; the third joint one fourth longer than the fourth; the apex

scarcely attenuated. Clypeus transverse. Usually the middle of the three basal

segments of abdomen is dull red; but the red colour may extend over the whole of

16 HYMENOPTERA.

the basal segments, as well as the metanotum. The transverse radial nervure is

received in the apical fourth of the cellule, and quite close to the third transverse

cubital; the transverse median is received beyond the middle of the cellule; the

accessory nervure in hind wings is shortly appendiculated. The third cubital cellule

is- longer than the second. The colour of the legs is paler than that of the thorax:

Claws simple.

24. Strongylogaster diversipes. (Tab. I. fig. 5.)

Selandria diversipes, Kirby, List of Hymen. i. p. 189, t. 8. f. 22.

Hab. Mexico, Orizaba; Costa Rica, Irazu 6000 to 7000 feet (Rogers); Panama,

Volcan de Chiriqui 2500 to 4000 feet (Champion).

The antenne are longer than the abdomen, stout, minutely pilose, the joints (espe-

cially the apical) produced at the apices beneath, the third joint longer than fourth.

The frontal sutures and the area are subobsolete ; the lower ocellus is bounded behind

by a deep triangular furrow ; the fovee are large, moderately deep; the outer round,

with a small tubercle in the centre, the central larger and more irregular in shape.

The third cubital cellule is long and narrow, longer than the second, which is a little

longer than the fourth, and has a horny point; the transverse median nervure is

received close to centre of cellule. The claws are bifid. The amount of reddish white

on the thorax varies. The palpi are blackish in all my specimens; and the labrum is

sometimes black.

25. Strongylogaster nigricans.

Strongylogaster nigricans, Norton, Trans. Amer. Ent. Soc. ii. p. 223; Catal. p. 155°.

Hab. Mexico, Cuantla, Tierra Fria (Saussure!); Guaremata, San Gerdénimo (Cham-

pion).

Frontal area large, deepest in the centre below the ocellus, truncated at apex at

sides, rounded behind; from the sides at apex runs a ridge in the direction of the

eyes; lateral fovea scarcely indicated, central large. Eyes converging. Third joint

of antenne a little longer than the fourth, the middle joints thickened, apex

attenuated; second joint longer than broad, not globular. Palpi black. Coxe at

base black, the rest white. Posterior femora entirely black, except at extreme base

and apex, middle pair lined with black on both sides; the anterior have more white

in front. Apex of four anterior tibie behind and at extreme apex all round, black ;

posterior with apical third black all round. Four anterior tarsi fuscous black, except

on metatarsus; posterior tarsi black, the metatarsus white at base; spurs black.

Wings with a smoky tinge; transverse radial nervure received very close to third

transverse cubital; third cubital cellule a little longer than second ; transverse median

received a little beyond the middle of the cellule.

STRONG YLOGASTER. | 17

The Mexican specimens have the four anterior legs almost devoid of black, and the

posterior legs have less black than in the Guatemalan specimens I have described above ;

the latter agree with Norton’s variety.

26. Strongylogaster lineatus.

Strongylogaster lineatus, Norton, Trans. Amer. Ent. Soc. ii. p. 2231; Catal. p. 155.

Hab. Mexico, Angang (Saussure).

27. Strongylogaster nigredo.

Strongylogaster nigredo, Norton, Trans. Amer. Ent. Soc. ii. p. 2231; Catal. p. 155.

Hab. Mexico, Toluca (Saussure *).

This species is closely allied to S. nigricans, but may readily be known from it by

the black mouth, collar, and tegulz, by the black hinder legs and coxe, the four anterior

legs, too, being for the greater part black. The third cubital cellule is shorter and

much wider than the second; the transverse median nervure is received beyond the

middle of the cellule. The frontal area is clearly defined by ridges; it is truncated

behind ; at the apex the sides are angled ; and from the apex of the angle runs a ridge

towards the eye; the apex is straight ; the head projects behind the eyes. The amount

of white on the anterior legs appears to vary.

28. Strongylogaster bicolor. (Tab. I. fig. 4, 9; 4a, saw.)

Niger, ore, tegulis, linea pronoti, femoribus, tibiis tarsisque albis, tarsis posticis tibiarumque apice nigris ;

clypeo exciso; alis fere hyalinis.

Long. fere 10 millim.

Hab. Guatemata, Duefias (Champion).

Frontal area indistinct above, the sides more clearly indicated at apex; from the

apex runs a ridge to the eyes as in WS. lineatus ; lateral fovee appearing as longish

furrows from this ridge; central large. Eyes converging. Antenne as long as the

abdomen, thickened in the middle, attenuated at the apex; clypeus sharply incised in

the middle; palpi blackish. Legs white; base of coxe, a line behind on the four

anterior femora and tibie, apical three fourths of posterior femora, apical third of

hinder tibiee, and tarsi black, save at base ; apex of anterior tarsi fuscous ; spurs black ;

claws bifid. The transverse radial nervure is received at apical third of cellule ; second

cellule longer than third; the accessory nervure in hind wing interstitial. The vertex

is punctured. On the base of abdomen is a thin white line.

Differs from S. lineatus in being larger, in having the antenne longer, clypeus

incised, wings clearer, and transverse radial received further from third transverse

cubital. 0. nigricans, again, has the antenne “slender, not longer than the thorax.”

BIOL. CENTR.-AMER., Hymenopt., May 1883. DD

18 HYMENOPTERA.

SELANDRIA.

Selandria, Leach, Zool. Misc. iii. p. 126 (1817) ; Hart. Blattw. p. 263 (1837).

Twenty-five species are referred by Kirby (List of Hymenoptera, p. 187) to this

- genus—fourteen from Europe, two from North America, three from Brazil, and six from

Mexico; but two of these latter I have transferred to Strongylogaster *.

1. Selandria luteola.

Nigra, abdomine pedibusque rufo-luteis, ore albido, coxis, trochanteribus, femoribus basi, tibiarum posticarum

apice tarsisque nigris; alis fumatis, costa et stigmate fuscis.

Long. 4—5 millim.

Hab. Panama, Volcan de Chiriqui 3000 to 4000 feet (Champion).

The antenne are stout, as long as the abdomen, the third joint is much longer than

the fourth; the eyes converge on the lower side in front, and reach to the base of the

mandibles; the frontal area is obsolete, the antenne are widely separated, the lateral

sutures on the vertex wide, but not deep; the antennal fovee round, large; clypeus

hairy, transverse, palpi white; the head retreats behind the eyes. The first transverse

cubital nervure is subobsolete ; the second cubital cellule is a very little longer than

the third, which is longer than the fourth; the first recurrent nervure is received a

little in front of the middle of cellule; the transverse median nervure is received a

little in front of the apical third of cellule; the transverse radial nervure is largely

bullated in the middle. The apex of coxe is testaceous; the black on the femora

reaches almost to the middle; behind the tibie are more or less fuscous; the anal

appendages are black, pilose.

2. Selandria curialis.

Selandria curials, Cresson, Trans. Amer. Ent. Soc. viii. p. 15’.

Hab. Mexicol.

3. Selandria flavipes.

Selandria flavipes, Norton, Proc. Bost. Soc. N. H. viii. 1861, p. 222.12; Trans. Amer. Ent. Soc.

i. p. 258; iv. p. 85; Catal. p. 121’.

Selandria flavipes, Cresson, Trans. Amer. Ent. Soc. viii. p. 60’.

Hab. Norra AMERICA.—MExico }.

4, Selandria glabra.

Selandria glabra, Kirby, List of Hymen. 1. p. 190, t. 8. fig. 23°.

Hab. Mexico, Orizaba!.

* §. diversipes, Kirby, and S. inconspicua, Kirby.

SELANDRIA. 19

_ 5. Selandria leucopoda. |

Nigra, nitida; tegulis, pronoti limbo, macula laterali, mesopleuris pedibusque albido-stramineis, coxis basi

tarsisque nigris; alis fere fuscis, costa et stigmate nigris. 9°.

Long. 63 millim,

Hab. Guatemata, San Gerénimo (Champion).

The antenne are not much shorter than the head and thorax, thickened in the

middle, attenuated at the apex, two basal joints comparatively large, third about one

fourth longer than the fourth ; the last short, very conical and narrow. The transverse

radial nervure is received close to the apical third of the third cubital cellule, and has

a bulla; the first transverse cubital nervure is pellucid ; the third cubital cellule is a

very little longer and wider than the second; the second transverse cubital nervure

has a faint bulla, from which issues a double spurious vein to near the apex of the

wing; the transverse median nervure is received in apical third of cellule. The >

accessory nervure in hind wing is interstitial. Abdomen slightly carinated ; the apices

of the segments beneath are broadly white; the clypeus is truncated at the apex. The

frontal area is not very clearly defined; there is a hollow below the ocelli, and at the

end of this hollow is a wider, deeper, but shorter one. The three frontal fovez are

large, moderately deep, and united. The head scarcely projects behind the eyes; the

claws are simple.

6. Selandria crassa. (Tab. IT. figg. 5,2; 5a, head; 56, antenna; 5, tarsus.)

Nigra, ore, pronoto, mesonoti lateribus, mesopleuris tegulisque albo-testaceis; pedibus flavo-albidis, tarsis

nigris ; alis fumatis, costa et stigmate nigris, cellula cubitali tertia fere breviore quam secunda.

Long. 6 millim.

Hab. Guatemata, San Isidro 1600 feet (Champion).

The antenne are nearly as long as the abdomen, thickened in the middle, attenuated

towards the apex, scape pale testaceous, third joint longer than the fourth.

Sutures on vertex narrow butdeep. Frontal area raised, the bounding ridges indistinct,

a flat suture round the ocellus. Lateral antennal fovea round, deep; central wider

than long, shallow. Clypeus truncated ; the second cellule is of almost exactly the same

length as third; the transverse radial nervure is received a good piece beyond the

middle of the cellule, the transverse median near the apical third; there is a horny

point in the second cubital cellule. The mesopleure are black behind, as also the

breast ; the middle lobe of mesonotum is black, except the apex ; the cenchri are large.

The face is covered with long white hair.

A male Selandria from El Tumbador is probably the male of this insect; but the

mesonotum, pronotum, and mesopleura, where these parts in the female are pale

testaceous, are in it crimson, and the scutellum is black. The crimson tint is perhaps

owing to discoloration by the action of cyanide of potassium.

DD 2

20 HYMENOPTERA.

7. Selandria coccinata.

Selandria coccinata, Norton, Trans. Amer. Ent. Soc. iv. p. 85*; Cresson, J. c. vill. p. 42.

Hab. Mexico }.

8. Selandria mutica.

Nigra, ore pedibusque albis, tarsis posticis et tibiarum apice nigris, tegulis, pronoto mesonotoque rufis; alis

subhyalinis, costa et stigmate nigris.

Long. 7 millim.

Hab. Guatemaua, Capetillo (Champion).

In coloration this species resembles S. crassa, except that the antenne are entirely

black, and the pleure under the wings are not so broadly red, and it differs from it in

the body being longer and narrower compared with the breadth. The antenne are shorter

compared with the length of the body, and do not taper so much towards the apex ; they

are thicker, and the last four joints are more abruptly shorter. ‘The frontal fovee are

larger, the middle especially, and it is not placed so much below the others. The

transverse radial nervure is received quite close to the third transverse cubital, and

the transverse median nearer the middle of the cellule. The third joint of the posterior

tarsi is double the length of the fourth, which is not the case with S. crassa; and the

claws are simple, not cleft as in the latter.

I thought at first that this was S. diversipes, Kirby; but Mr. Kirby has compared

the species I have referred to Strongylogaster with his type, and tells me that it

is undoubtedly his species. SS. mutica is very like S. diversipes in colour ; but the shorter

third cubital cellule, the almost interstitial transverse radial nervure, simple spurs,

and smaller size sufficiently distinguish it.

9. Selandria nigripes.

Nigra, pilosa ; pro- mesothoraceque rufis ; alis fuscis; clypeo testaceo, truncato.

Long. 73 millim.

Hab. Panama, Bugaba, Chiriqui, David (Champion).

The antenne are densely pilose, nearly as long as the abdomen, slightly thickened

in the middle, attenuated towards the apex; third joint longer than fourth; sutures

on vertex absent ; frontal area flat in the middle, the suture interrupted there; but

there is a deep suture surrounding the ocellus, and a less distinct shallower and broader

one at the apex; at the apex of the ocellus is a large fovea. Lateral antennal fovee

large, flat ; central wider than long, deep in the centre. The transverse radial nervure

is received not far beyond the middle of cellule, the transverse median a little beyond

the middle; there is a bulla in the transverse radial and first transverse cubital

nervures ; a horny point in second cubital cellule. The accessory nervure in hinder

Wing is interstitial ; the blotch is very large.

SELANDRIA.—MONOPHADNUS. 21

10. Selandria ruficollis.

Selandria ruficollis, Norton, Trans. Amer. Ent. Soc. i. p. 259; Catal. p. 1217.

Hab. Mexico },

11. Selandria varitarsis.

Nigra, pronoto, mesonoto, mesopleuris tegulisque rufis; antennis pilosis; alis fumatis, cellula cubitali tertia

breviore quam secunda.

Long. 5 millim.

Hab. Mexico (Sallé) ; Guarmmaa, Cubilguitz (Champion).

Antenne nearly as long as the abdomen; third joint thinner at base than at apex,

longer than fourth; three apical joints abruptly shorter than preceding, the ninth

thinnest, sharply conical. Sutures on vertex broad, moderately deep. Frontal area

interrupted in the middle, narrower and sharper-pointed at base than at apex, the suture

behind the ocellus being also deeper ; a large fovea in front of ocellus; lateral antennal

fovee large, roundish, shallow, and running into the central one, which is not so wide.

Clypeus truncated. The first radial cellule is shorter than the second; third cubital,

shorter than second, receives the transverse radial nervure a little beyond the

middle; the transverse. median nervure is received a little beyond the middle of

cellule. The greater part of the four posterior metatarsi is dull white, anterior black.

The legs are thickly covered with hair, which gives the tibie especially a dull

appearance; the metatarsus is shorter than the succeeding joints, The blotch is very

large.

Similar to S. nigripes in coloration, but is smaller, the antenne are shorter, thicker,

and less pilose, the third cubital cellule shorter compared with second ; metatarsus shorter,

and white for the greater part. It may possibly be a variety of S. rujicollis; but the

description is not sufficiently detailed to enable me to settle this point. 8. ruficollis,

however, has the anterior femora and tibie yellow, and the apical half of middle

femora and tibiz obscure reddish. Norton’s variety very possibly belongs to S. varitarsis.

MONOPHADNUS.

Monophadnus, Hartig’, Blattwespen, p. 271.

Waldheimia, Brullé, Hym. iv. p. 665.

The majority of the Neotropical species of Monophadnus differ from the Palearctic

forms in the posterior coxe being larger, reaching sometimes to the fourth abdo-

minal segment; the metatarsus is longer than all the other tarsal joints together ; and

the antenne.are usually pilose, thickened beyond the middle, and with the last four

joints abruptly shorter. These three characters are found more or less in the other

genera of Selandriades inhabiting the Neotropical Region; they are comparative

characters in all of them, and cannot be readily used in diagnosing genera. For instance,

while in some species of Monophadnus the posterior coxe reach cr go beyond the

22 HYMENOPTERA.

apex of the fourth abdominal segment, in other species they do not reach much beyond

the middle of the third; and the same remark applies to the length of the metatarsus.

I have therefore sunk Waldheimia, which was formed for a species which possessed

the three peculiarities I have mentioned above.

The majority of the Neotropical species are much longer than the Nearctic or

Palearctic species. Some tinge of yellow is the prevalent colour ; and the wings are

seldom or never altogether hyaline.

Monophadnus is the largest of the genera allied to Selandria ; fifteen species have

been described from America north of Mexico, five or six from South America. There

are forty European; three are known from Japan and China, and one from India.

1. Monophaduus scutellatus.

Monophadnus scutellatus, Kirby, List of Hymen. i. p. 177, t. 7. £. 18°.

Hab. Mexico, Orizaba!.

2.. Monophadnus trimaculatus. (Tab. Il. fige. 6, ¢; a, head, from front;

6, from side; ¢c, antenna; d, claws; ¢, tarsus). —

Niger, nitidus, antennis (apice excepto), vertice, maculis 3 mesonoti, abdominis fasciis medio tibiisque posticis

dimidio apicali nigris, antennarum apice tarsisque albis; alis flavo-hyalinis, costa et stigmate testaceis.

Long. 10 millim.

Hab. Guatemaa, Zapote (Champion).

The antenne are not much longer than the abdomen, thickened in the middle,

pilose; third joint one fourth longer than the fourth, apex of first joint and four

apical joints white. Sutures on vertex shallow ; frontal area indistinct in front, distinct

behind and in the middle; the base sharply pointed ; a shallow fovea in front of ocellus ;

the apex of fovea raised in middle. Lateral antennal fovee of moderate size, running

into the large central one, which is double their size. Clypeus rounded at apex. The

transverse median nervure is received a little in front of cellule; transverse radial in

apical third of third cubital, which is double the length of second, and one half wider

at apex than at base. There is a distinct appendicular cellule in hind wings; their

accessory nervure is shortly appendiculated. Claws bifid. There is a small black spot

on each side of sternum, and another on upperside of metapleura. The black mark

on centre of vertex is wider at base than at apex, and projects at the ends.

3. Monophadnus letus.

Rufo-testaceus, antennis, capite (ore excepto), abdominis apice, tibiis tarsisque nigris ; alis flavescenti-hyalinis,

apice fusco, nervis testaceis.

Long. 11 millim.

Hab. Panama (Boucard).

Broad compared with the length. The antenne are pilose, thickened in the middle,

MONOPHADNUS. 23

distinctly attenuated at the apex. The sutures on vertex are deep; the frontal area is

deep, well-defined, open at the middle on lower sides, a furrow issuing through the

open part from the ocellus; fovee scarcely indicated; clypeus truncated at apex, but

with the edges rounded. The clypeus, labrum, and mandibles are testaceous ; there is

also a small brownish mark on the outer side of the frontal suture. ‘The transverse

radial nervure is in apical third of cellule ; transverse median a little in front of middle ;

the first recurrent nervure is received in middle of the second cubital cellule, which is

considerably shorter than the third; the apex of stigma is blackish, as are also the

nervures in front of it.

This species comes near UW. ochra, but is much larger and broader, the apex of abdomen

is black, and only the apex of the wings is fuscous, the transverse radial and recurrent

nervures are received further from the transverse cubitals, the space above the antenne

is not so hollow, and the frontal area is better marked at the apex.

4, Monophaduus fascipennis. (Strongylogaster fuscipennis, Tab. I. fig. 17.)

Selandria fascipennis, Norton, Trans. Amer. Ent. Soc. iv. p. 84; Cresson, J. c. vii. p. 40, g & 2 ,

Hab. Mexico}.

5. Monophaduus costalis.

Rufo-testaceus, antennis pilosis, nigris; costa, abdominis apice tibiisque (basi excepta) nigris; tarsis nigris,

basi alba ; alis flavo-hyalinis, apice leniter fusco, stigmate testaceo.

Long. 10 millim.

Hab. Mexico, Valladolid in Yucatan (Gaumer).

Antenne thick, pilose, shorter than the abdomen; third joint much longer than

fourth, four last joints abruptly shorter. Clypeus rounded at apex ; face covered with

long testaceous hair. Sutures on vertex shallow; frontal area small, oval, sharp at

base, the apex open, connected by a furrow with the central antennal fovea; lateral

antennal fovea deep in the centre, but widening out round the edge. Third cubital

cellule more than double the length of second, which, on its lower side, is not much

longer than the first on its lower side; it is angled where it receives the recurrent

nervure at the apical third; the transverse radial nervure is received a little beyond

the middle; transverse median a little in front of middle of cellule. The two posterior

tibie are black, except at base, which is pale testaceous; the anterior are only black

behind in the middle, at apex all round. Not much more than the half of the four

anterior tarsi are white, more than two thirds of posterior. The space surrounding the

ocelli is black. The claws are bifid.

6. Monophadnus annulipes. (Tab. I. figg. 8, 2; 3a, maxilla; 6, labrum;

c, mandible.)

Testaceus, antennis, vertice, macula supra coxas posticas, abdominis apice, femoribus posticis cum apice tibiarum

24 HYMENOPTERA.

et tarsorum nigris ; genibus, tibiis tarsorumque basi albis ; alis flavo-hyalinis, apice fusco, costa et stigmate

flavis.

Long. 9 millim.

Hab. Guatemata, Cahabon, El Reposo (Champion).

The antenne are as long as the abdomen, densely pilose, moderately thickened in

the middle, attenuated at the apex; the pedicle of the scape is testaceous. The

sutures on vertex are deep and curved round the ocelli; the frontal area is bluntly

pointed at the base, the sides curved, the apex open, the ocellus is surrounded with a

furrow; the three antennal fovee are very large, the lateral rounded and wider than

the central, and have a rounded projection in the middle; the central is longer than

wide ; the projection in the centre is widest at the apex. Clypeus rounded at the apex ;

‘the cheeks densely pilose. The mark on vertex only surrounds the ocelli. The trans-

verse radial nervure is received in the apical third of cellule ; transverse median before

the middle; the third cubital cellule is much longer and wider than the second, and

double the width of base at the apex. There isa distinct bulla in the transverse radial,

and third and fourth transverse cubital and second recurrent nervures ; a double spurious

vein issues from the bulla on third transverse cubital ; a single one issues from near

the base of the first recurrent nervure to the bulla on second recurrent, where it

bifurcates into two. All the tarsi are black from the second joint. The front femora are

testaceous, except a black line at the base ; the middle are black to a little beyond the

middle; posterior black, except the extreme base and apex. The apical two thirds of

the four posterior tibiz are black ; claws bifid; spurs testaceous.

The antenne are longer and thinner than in JI. costalis; the frontal area slightly

shorter ; and the lateral furrows from it do not run down into the central antennal

fovea, although, as in WZ. costalis, there is a central depression running into it; the

antennal fovee are larger; the wings are more clouded at the apex, the bulle more

distinct, they being scarcely visible in MZ, costalis, which has besides no spurious veins ;

the femora are marked with black; and it is also a narrower insect.

7. Monophadnus interstitialis.

Rufo-testaceus, antennis nigris, basi testacea; pedibus testaceis, tibiis intermediis apice, posticis dimidio

apicali nigris; alis flavo-hyalinis, apice fusco, nervis testaceis, nervo 2° recurrente interstitiali, costa et

stigmate testaceis ; foveolis frontalibus parvis.

Long. 9 millim.

Hab. Panama, Volcan de Chiriqui, 2000 to 3000 feet (Champion).

The antenne are a little longer than the abdomen, but slightly thickened in the

middle, densely pilose, the third joint a little longer than the fourth, the apex not

attenuated, the scape testaceous. Sutures on vertex very shallow and indistinct ;

frontal area proper absent; but there is a shallow pit in front of ocellus; antennal

fovee small, shallow. Clypeus truncated at the apex; ocelli surrounded with black.

MONOPHADNUS. 25

The transverse radial nervure is received in the apical third of the cellule, the trans-

verse median a little in front of middle of the cellule ; the second recurrent interstitial ;

the third cubital cellule is a little shorter than the second, much wider at the base

than at the apex; bulle not very distinct. The claws are bifid; the posterior spurs

black; the posterior tibie black, except at the base; the middle pair only black at

the apical half. The two apical joints of all the tarsi are black; the rest of the tarsi.

pallid testaceous; the legs are more pallid in colour than the body. The sheath is

black and long. 2

Very closely allied to MM. testaceipes, but smaller and broader compared with the

length ; the antenne are thinner and not so densely clothed or with such a long pile;

frontal area less defined, antennal foveee smaller and not united by a suture, the under

fovea especially being much smaller; the clypeus is not so rounded, the nervures are

not so dark, being testaceous not blackish, the spurious veins less distinct ; and the tarsi

are not so white.

8. Monophadunus testaceus.

Testaceus, antennis sat dense pilosis, nigris, basi testacea, foveola interantennali magna, tibiarum intermedi-

arum apice, posticis ultra medium nigris; tarsis albidis, apice nigro; alis hyalinis, apice lenissime

fusco, nervis fuscis; stigmate et costa testaceis.

Long. 11 millim.

Hab. Guatemata, San Gerénimo (Champion).

Antenne pilose, the scape and the base of the third joint testaceous, thickened in

the middle, third longer than fourth ; last four joints abruptly shorter, very slightly

attenuated. Head narrow, retreating behind the eyes, where it is very slightly

developed ; sutures on the vertex shallow; frontal area visible only as a depression in

front of the ocellus; antennal fovea distinct, central large, a little longer than broad,

running into the lateral ones at its apex. Clypeus rounded. Face short; eyes not

reaching to the mandibles. The transverse median nervure is received a very little in

front of the middle of the cellule, the transverse radial in the apical fourth ; third cubital

cellule wider and much shorter than the second; the second recurrent nervure is

received a very little in front of the second transverse cubital and in the second

cubital cellule; the accessory nervure in the hind wing shortly appendiculated. Claws

simple; the extreme apex of the posterior tarsi is black.

Easily known from the other yellow species by the third cubital cellule being shorter

than the second, and by the second recurrent nervure being received in the second

cubital cellule; but the latter may be an exceptional character.

9. Monophaduus tibialis.

Testaceus, antennis, tibiis tarsisque nigris, alis flavo-hyalinis, apice fusco, cellula cubitali 3° longiore quam 2*.

Long. 14 millim.

Hab. Guatema.a, San Gerénimo (Champion).

BIOL. CENTR.-AMER., Hymenopt., July 1883. EE

? ¥ a a

‘ oe et

26 HYMENOPTERA.

Antenne scarcely pilose, shorter than the abdomen, thickened in the middle, last

four joints abruptly shorter and more globular than the preceding, third joint more

than one third longer than the fourth. Face long, lateral sutures on the vertex deep,

‘central faintly indicated. Frontal area small, oval, but a little wider at the apex;

three antennal fovee large, but not very deep compared with their size, the lateral running

into the central at the lower end. Clypeus rounded at the apex. Eyes oblong, not

reaching to the mandibles. The transverse median nervure is received close to the

middle of the cellule, transverse radial in the apical third, second recurrent nervure

almost interstitial; third cubital cellule scarcely one half longer than the second ;

there is a bulla in the transverse radial nervure, a fainter one in the second and third

transverse cubital, and one more distinct and longer in the second recurrent. The

accessory nervure in the hind wings shortly appendiculated; the anterior tibie are

testaceous in front; the tarsi for the greater part of the same colour. The abdomen is

a half longer than the thorax and head; the saw issues from the fifth abdominal

segment; the sheath black and pilose. The wings are clouded from a little behind

the apex of the stigma; the nervures are testaceous.

10. Monophadnus ochra. (Tab. II. fig. 7, 3.)

Selandria ochra, Norton, Trans. Amer. Ent. Soc. 1. p. 249*; Catal. p. 111, ¢.

Hab. Mexico, Cordova (de Saussure +), Valladolid in Yucatan (Gawmer) ; Nicaragua,

Chontales (Janson).

I presume the specimens from Nicaragua and Yucatan are identical with Norton’s

species ; but the characteristic alar neuration is not described. The transverse radial

and second recurrent (very nearly) nervures are interstitial; the transverse median is

received considerably in front of the middle of cellule, which is a little longer than the

second. ‘The vertical sutures are wide, the space between the ocelli and the eyes being

slightly hollowed; the frontal area is well defined, but open completely at the lower

end, the ridge curving towards the eyes; the fovee are flat.

11. Monophadnus violaceipennis. (Tab. II. fig. 8,6: a, head; 6, posterior

wing. )

Nigro-ceruleus, ore, tarsis tibiisque pro parte albidis, alis nigro-violaceis.

Long. 9 millim.

Hab. GuateMaLa, Panima (Champion).

The antenne are pilose, as long as the abdomen, thickened from the fourth joint,

the third joint much longer than the fourth, the third and fourth joints thinner than

the succeeding, the apex scarcely attenuated. The sutures on the vertex are flat, broad,

the frontal area ill defined ; a broad furrow runs from the lower ocellus to the central

antennal fovea, which is larger, but still smaller than the more rounded lateral ones,

with which it is united by a broad furrow. The eyes are large, converging, reaching

to the base of the mandibles ; clypeus small, rounded at the apex ; labrum nearly as long

MONOPHADNUS. 27

as the clypeus, which projects alittle over it; the labrum and clypeus are white ; man-

dibles blackish, as are also the palpi. The transverse radial nervure is received in the

apical fourth of the cellule, the first recurrent beyond the middle of the second cubital

cellule, which is only a little longer than the first, and not half the length of the

third; second recurrent received a little beyond the second transverse cubital; the

transverse median is received a little in front of the middle of the cellule. In the hind

wings the transverse nervures are at the edge of the wing. There is a bulla in the

transverse radial and first transverse cubital. The apex of the coxe, the trochanters,

the apex of the femora, the tarsi except at the apex, four anterior tibie, and the base

of the posterior tibiee are black. The metatarsus is longer than all the othér joints;

the claws almost bifid. The cubital nervure forms almost a half-circle; the hinder

wings are lighter-coloured than the anterior.

Comes near to MV. longipennis, Norton, but probably distinct.

12. Monophaduus longipennis.

Selandria longipennis, Norton, Trans. Amer. Ent. Soc. iv. p. 84+; Cresson, loc. cit. -viii. p. 41, 2.

Hab. Mexico, Cordova (Sumichrast ').

13. Monophadnus fumosus.

Nigro-violaceus, pilosus, thorace tegulis unguiculisque rufis, alis nigro-violaceis.

Long. 9-10 millim.

Hab. Panama, Bugaba (Champion).

The clypeus is truncated at the apex, rounded at the sides; the lateral frontal fovee

are shallow, much smaller than the central, which is joined by a wide suture to the

frontal area, which is deep, rounded behind the ocellus.and hollowed in front of it.

Frontal sutures wide, moderately deep; the vertex is indistinctly carinated in the

centre; below the lateral ocelli is a small fovea. Spurs very short, curved; claws

apparently simple. Wings longish; the first cubital cellule is small, broader than long,

the second about one third shorter than the third; the transverse radial nervure is

received in front of the apical third of the cellule, first recurrent in the basal third ;

second not far from the second transverse cubital: there are spurious veins running

through all the bulla. The male does not differ from the female beyond the second

cubital cellule being a little longer compared with the third.

This species cannot, I think, be U. cordigera; for that is stated to have the antenne

“about as long as the head and mesothorax together,” while in the present species

they are distinctly longer than the head and entire thorax together; the abdomen in

M. cordigera is “ almost as broad as long ;” here it is much longer than broad ; in I. cor-

digera the wings are clearer at the.apex; here they are uniform in tint, and the claws are

simple. Compared with MZ. suturalis the antenne are longer and thinner, more pilose,

and the third joint is not nearly so long compared with the fourth; the sides of the

clypeus are more rounded, the central frontal fovee larger and deeper, and the lateral

EE 2

28 HYMENOPTERA.

smaller; the second cubital cellule is much longer, and the abdomen shorter and

broader compared with its length. MW. imitatrix is readily known from it by the shallow

frontal area, small frontal foveee, shorter and thicker antenne, much shorter second —

cubital cellule, and bifid claws. |

14. Monophadnus cordigera.

Tenthredo cordigera, Beauv. Ins. Afr. Amér. p. 97, Hym. t. 9. f. 4 (1805).

Monophadnus cordigera, Kirby, List of Hymen. i. p. 175°.

Allantus barda, Say, Bost. Journ. i. p. 218°.

Selandria barda, Norton, Proc. Bost. Soc. viii. p. 220; id. Trans. Amer. Ent. Soe. i. p. 247.

Selandria dubia, Cresson, Proc. Ent. Soc. Phil. iv. p. 264; Nort. Trans. Amer. Ent. Soc. i. p. 248.

Hab. Norta AMERICA.—MExico 1,—VENEZUELA!; Braziu}.

I quote the above from Kirby1. JT. cordigera is possibly my M. suturalis. But

the latter is not Allantus barda; for that is stated to have claws with a “ very minute

obtuse inner tooth, distant from the tip,” while in M. suturalis it is equally cleft ;

Cresson, too, says that the abdomen in Selandria dubia is “short, almost as broad as

long,” which does not apply to M. suturalis. Norton states that the claws in A. dubia

are as in S. darda.

15. Monophadnus suturalis.

Niger, pronoto, mesonoto tegulisque rufis; tibiarum anteriorum margine antico sordide testaceo ; alis violaceis.

Long. fere 11 millim.

Hab. GuaTeMata, San Geronimo (Champion).

Antenne shorter than the abdomen, thickened in the middle, eighth and ninth

thinner than the sixth and seventh, which are rounded on the lower side, third joint

about one third longer than the fourth; pilose. Sutures on vertex broad, the part

behind the ocelli and bounded by the sutures raised and separated from the ocelli by an

indistinct furrow ; in front in the centre of the raised portion is a fine suture. Frontal

area clearly defined, open behind by a narrow furrow, and in front it is continued by a

furrow into the central fovea, this furrow being much wider than the one behind;

central fovea larger than the others; lateral round. Clypeus rounded. The transverse

radial nervure is received a little past the middle of the cellule, the transverse median

nearly in the middle ; the second cubital cellule is not much longer than the first, and

not half the length of the third; it hasa large horny point in the centre. The claws are

thick, with the apex cleft. The tarsi are a little longer than the tibie; the metatarsus

scarcely so long as the succeeding joints. ‘The anterior knees, tibie, and tarsi are

dirty testaceous in front.

The male has the third cubital cellule much shorter; there is no furrow leading

from the frontal area into the central fovea, so that the area is a mere pit enclosing the

ocellus; the base is narrow, the apex wider and rounded. ‘The base is closed; and

there is no suture on the pad-like elevation behind the ocelli.

MONOPHADNUS. 29

The largest of the black and red species. Easily known by the large size of the

frontal foves.

16. Monophadnus mexicanus. |

Selandria mexicana, Norton, Trans. Amer. Ent. Soc. i. p. 248, iv. p. 84; Catal. p. 110, 9&¢".

Hab. Mexico}.

17. Monophaduus obsoletus.

Nigro-violaceus, prothorace, mesonoto cum scutello pleuris tegulisque rufis; alis violaceis, nervo radiali

interstitiali, cellula cubitali 2* longiore quam 3%.

Long. 8 millim.

Hab. Panama, Bugaba (Champion).

The antenne are thickened towards the middle, densely pilose, third joint nearly one

half longer than the fourth. Clypeus truncated in the middle, broadly rounded at the

sides; it, as well as the labrum, is covered with long hair. Frontal foves almost

obsolete; in the centre of the lateral is a small round tubercle, frontal area with a

furrow open at the apex, surrounding the lower ocellus; sutures on vertex deep, wide.

Eyes large. First radial cellule longer than the second; first cubital cellule longer

than broad, third much dilated at the apex.

Closely allied to MV. imitatrix and M. clypeatus, but differs from both in the frontal

foveee being almost completely obliterated, and especially the central, while in the

species just mentioned they are clearly defined, by the interstitial radial nervures, and

by the second cubital cellule being longer than the third. The claws are apparently

simple, and the metatarsus is a little shorter than all the other joints together; the

anterior tibie are dirty white in front.

18. Monophadnus imitatrix.

Niger, pronoto mesonotoque cum scutello rufis, ore, genibus tibiisque anticis sordide albis; alis violaceis,

apice subhyalinis.

Long. 8 millim.

Hab. Guatemata, San Gerénimo, Quiche Mountains, Duefias, Capetillo (Champion).

The antenne are a little shorter than the abdomen, moderately stout, covered with a

microscopic pile, the third joint nearly one half longer than the fourth. The four

apical joints abruptly shorter than the rest, and not much longer than broad. Sutures

on the vertex distinct ; lower ocellus surrounded by a triangular pit, the apex not being

so clearly defined as the base ; frontal fovese moderate, not united, the middle one smallest.

Clypeus with its edges rounded. The first radial cellule is a little shorter than the

second ; transverse radial nervure straight, not curved, received in the apical third of the

cellule, transverse median in the middle; second cubital cellule scarcely half the length

of the third. Abdomen a little longer than the head and thorax, its apex with the

sheath pilose. The tarsi are about the length of the tibia. Metatarsus about as long

as the four succeeding joints.

30 HYMENOPTERA.

M. mexicana seems to be very closely allied to this; but it has the coxe at the apex,

the trochanters and the base of the femora, the anterior femora and tibie in front, and

two thirds of the hinder femora below white, and the tegule red ; the wings, too, are

equally subviolaceous.

19. Monophadnus clypeatus.

Niger, pronoto, mesonoto tegulisque sanguineis, clypeo, genibus tibiisque anterioribus margine antico sordide

albidis; alis violaceis.

Long. 62 millim.

Hab. Guatumata, Cerro Zunil, 4000 feet (Champion).

Very similar to W/. imitatrix, but smaller, the antenne longer, more pilose, the third

joint longer, being almost double the length of the fourth; the frontal foves are

smaller, nearly equal in size, and distinctly separated; the pit enclosing the ocellus is

roundish, not triangular ; labrum black; the tegule are red, the third cubital cellule is

shorter. The claws are bifid. ‘The wings are deep violaceous, very slightly lighter in —

tint at the apex.

20. Monophadnus erebus.

Monophadnus erebus, Kirby, List of Hymen. i. p. 178, t. 8. f. 10’.

Hab. Mexico.—Amazons, Para 1.

21. Monophadnus melanosternus.

Luteus, antennis, pleuris, sterno abdominisque apice nigris; pedibus nigris, apice coxarum, trochanteribus,

basi tibiarum et tarsorum albis ; alis flavescenti-hyalinis, apice famato ; nervis flavis.

Long. fere 10 millim.

Hab. Panama, Bugaba (Champion).

The antenne are densely pilose; the four apical joints are abruptly shorter, and

together are not much longer than the third joint. Clypeus truncated at the apex,

rounded at the sides ; three frontal fovew large, deep, lateral round, middle longer and

deeper; there is a fovea below the lower ocellus, and it is surrounded by a triangular

groove ; frontal sutures deep; the second cubital cellule is not much longer than the

length of the first on its lowerside, and not much more than half the length of the

third on its upperside ; the transverse radial nervure is received in the apical third of

the cellule; first recurrent in the middle, second not far from the second transverse

cubital. The legs are densely pilose; the basal tarsal joint is white in all the legs ;

claws bifid, spurs a little more than one third of the length of the metatarsus; nearly

half of the anterior tibiz is white, of the posterior more than one third ; the anterior

femora are white at the apex; the cloud in the fore wings commences at the end of

the stigma, extends backwards to the second transverse cubital nervure, and then

slopes along the second recurrent.

This distinct species was received too late to be inserted in its proper place before

M. annulipes.

BLENNOCAMPA. 31

BLENNOCAMPA.

Blennocampa, Htg. Blattw. p. 266 (1837).

This genus is limited to those species which have no middle cellules in the posterior

wings. It contains fewer species than Monophadnus, and is also somewhat more limited

in distribution. Twenty-five European species are known; two have been described

from Asia Minor, seven from North America, and five from South America (namely

one from Brazil allied to B. subcwrulea, two from Para, and two from Chili).

1. Blennocampa albofemoralis. (Tab. Il. figg. 12, 2; 12a, head.)

Nigra, pilosa, mesonoto (scutello excepto) tegulisque rufis ; metapleuris, coxis, femoribus, tibiarum basi, tarsis,

ore pronotoque albis ; alis violaceis ; antennis pilosis.

Long. 8-9 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

. The antenne are as long as the abdomen, the third joint thinner at the base, longer

than the fourth, the last four joints abruptly shorter. Sutures on the vertex deep;

central ocellus surrounded by a wide and deep furrow. Two lateral fovee large; a

tubercle in the centre, not united with the central fovea, which is small. The trans-

verse radial nervure is received at the edge of the apical third of the cellule; transverse

median a little in front of the middle, the first recurrent nervure is received close to the

middle of the cellule; third cubital cellule much longer than the second ; there isa horny

point at its base; and there is another in the second. In the hind wing is a long appen-

dicular cellule. Claws subbifid; the clypeus is rounded at the edges, truncated in

front; labrum rounded. The clypeus, labrum, and a little space between the antenne

white; mandibles black. Palpi white, black at the apex. The metatarsus is as long

as the four succeeding joints ; tarsi as long as the tibie; the apical joints of tarsi black.

The abdomen is longer than the head and thorax; the blotch is very large, white ; apex

of the abdomen and sheath covered with long hairs.

2. Blennocampa sumichrasti.

Selandria sumichrasti, Norton, Trans. Amer. Ent. Soc. iv. p. 82; Cresson, loc. cit. vill. p. 40, 3°.

Hab. Mexico, Cordova (Sumichrast 1).

3. Blennocampa intermedia. (Tab. II. figg. 11, ?: @, head; 6, tarsus;

¢, antenna.)

Nigra, pronoto, tegulis mesonotoque rufis; antennis pilosis; alis violaceis, nervo 2° recurrente 1nterstitiali.

Long. 8 millim. a

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

The antenne are a little shorter than the abdomen, slightly thickened in the middle,

attenuated at the apex, the third joint one half longer than the fourth. Head sharply

narrowed behind the eyes; sutures on the vertex deep; frontal area forming a rounded

furrow behind and in front of the ocellus, but open at the apex. Lateral fovee large,

32 HYMENOPTERA.

round, with a tubercle in the centre; central much longer than broad, deep, projecting

behind, bifurcating round a tubercle in front; face covered with long white hair;

clypeus scarcely transverse. The transverse radial and second recurrent nervures are

interstitial; the third cubital cellule is a little longer than the second, which has an

obscure horny point; the transverse median is received in the basal fourth of the cellule.

There are spurious veins of the usual form in the radial, cubital, and discoidal

cellules ; the appendicular cellule in the posterior wings is large. The tarsi are shorter

than the tibie, the claws bifid.

A specimen from Bugaba has the transverse radial and second recurrent nervure not

interstitial, they being received at a little distance from the transverse cubital nervures ;

but it does not differ otherwise.

4. Blennocampa leucosoma.

Nigra, ore, genibus, tarsis tibiisque anticis sordide albis; pronoto, mesonoto tegulisque rufis; alis fusco-

hyalinis.

Long. 8 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

The antennze are somewhat longer than he head and thorax, covered with a micro-

scopic pile ; third joint much longer than the fourth, four apical joints abruptly shorter

than the others, scarcely attenuated. Sutures on the vertex deep; lower ocellus sur-

rounded by a deep furrow, frontal area proper not indicated; frontal fovea very large

and united by a broad furrow; the central wider than long, projecting in the middle

above. Clypeus truncated at the apex; palpi blackish fuscous. Mandibles black ;

labrum and clypeus white; the second radial cellule is longer than the first; the trans-

verse radial nervure is received in front of the middle of the cellule, the second recurrent

almost interstitial ; third cubital cellule one fourth longer than the second, which is

double the length of the first on the upperside; the transverse median is received in

front of the middle of the cellule. In the hind wings the appendicular cellule is

short. Claws bifid.

Apart from the differences in the neuration and coloration, B. leucosoma differs from

B. intermedia in the wings being lighter-coloured, the antenne shorter and with a shorter

pile, the four apical joints more abruptly shorter, the metatarsus as long as the four

succeeding joints, while in B. zntermedia they are distinctly shorter than it.

Obs. Norton (J. ¢. p. 246) describes a species from Mexico as a variety of B. inhabilis

(a species described from Massachusetts), which agrees pretty closely in coloration with

B. leucosoma, and is possibly identical with it.

5. Blennocampa subcerulea. (Tab. II. fig. 109.)

Subcerulea, nitida, antennis pilosis ; alis nigro-violaceis, cellula cubitali 3* longiore quam 2.

Long. 74 millim.

Hab. Guatemata, San Gerénimo (Champion) ; Panama, Volcan de Chiriqui 2500 to

4000 feet, Bugaba (Champion).

BLENNOCAMPA. 33

The antenne are shorter than the head and thorax, moderately stout; third joint dis-

tinctly thickened at the apex, and half as long as the fourth. Clypeus almost transverse ;

the sutures on the vertex are deep at the sides of the ocelli, broader and shallower below

them; the front is roughly blistered, so that the ridges of the frontal area are almost

obscured; the broad sutures of the vertex end in a ridge, which curves round the

antenne and goes round its inner side; the frontal fovee are not well marked; the

lateral is represented above the above-mentioned ridge by a small tnbercle ; the central is

not visible at all, but between the antenne is a large rounded tubercle surrounded by

a furrow. The transverse radial nervure is received in the apical sixth of the cellule,

the transverse median in front of the middle; the third cubital cellule is longer than the

second by one third, is narrow at the base, much widened at the apex. There is a bulla

on the transverse radial and first transverse cubital; and a double spurious vein goes

through the cubital and discoidal cellules; and there is a single one in the first radial.

The legs are stout, the tibia grooved on the inner side, the tarsi shorter than the tibia,

the metatarsus shorter than the succeeding joints; the claws subbifid. ‘The abdomen

is longer than the head and thorax, its apex pilose, as are also the cerci and apex of

the sheath. The head is only very slightly developed behind the eyes.

The male has the front smoother, not so blistered, the third cubital cellule shorter.

6. Blennocampa alpina.

Nigra, antennis crassis, fere glabris, genibus tibiisque anticis sordide testaceis; alis fuscis, cellula cubitali

3° fere breviore quam 2°,

Long. fere 7 millim.

Hab. Mexico, Ciudad in Durango 8100 feet (Yorrer).

The antenne are a little longer than the head and thorax, the third joint a little

longer than the fourth, the rest to the penultimate becoming gradually shorter, but

scarcely thinner ; the ninth longer than the eighth. ‘The head projects behind the eyes,

close to which there is anarrow suture. ‘The sutures on the vertex are deep, if narrow ;

frontal area moderately well defined, the apical edges angled, the middle straight.

Central fovea large, longer than broad ; lateral ones indistinct. Clypeus with shallow

punctures, the apex scarcely transverse; tips of mandibles piceous. The transverse

radial nervure is received a very little beyond the middle of cellule ; transverse median

a little in front of the middle; the third cellule is a little shorter and wider than the

second, which bears a distinct horny point; there is a bulla in the first transverse

cubital nervure ; the abdomen is not much longer than the head and thorax, the sheath:

projecting, large, slightly pilose. Claws simple ; tarsi shorter than the tibie. The

legs are covered with a greyish pile. .

Readily known from all the other Neotropical species by the head being broadly

developed and projecting behind the eyes, and by the punctured clypeus. The shape of

the head is characteristic of northern forms.

BIOL. CENTR.-AMER., Hymenopt., July 1883. FF

34 HYMENOPTERA.

PCECILOSOMA.

Pecilostoma, Dahlbom, Consp. Tenthr. p. 5 (1835).

Empyria, Brullé, Hymén. iv. p. 666.

This genus is of small extent, and is not of very wide distribution. Nine European

species have been described, two North-American, and one is known from Chili. The

typical species have black bodies and legs; and the white markings on the edges of the

abdominal segments are characteristic. The black species are difficult to separate, unless

attention be paid to structural details.

1. Pecilosoma mexicanum. (Tab. II. fige. 9; 9a, labium; 8, antenna;

c, maxilla; d, saw; e, mandible.)

Nigrum, nitidum, pilosum, tegulis, pronoti limbo, genibus tibiisque anterioribus margine albidis ; calcaribus

posticis brevibus, unguiculis dente subapicali armatis; alis fumatis, costa et stigmate nigris. 9.

Long. 6—7 millim.

Hab. Mexico, Milpas in Durango 5900 feet (Forrer).

The antenne are somewhat longer than the head and thorax, but shorter than the

abdomen; they are thick, almost glabrous, the third joint nearly one fourth longer

than the fourth, the last shorter and thinner than the eighth. The front and vertex are

slightly shagreened; the sutures on the vertex are deep but narrow; the ocelli are

separated from the part behind them by a deep furrow. The frontal area proper is

obsolete; the lower ocellus has a short triangular furrow surrounding it behind; the

front projects between the antenne, ending in a sharp point in the middle, and hollow

on either side of this; the antennal fovea is large, deep, and round. Below each

antenna is a large, deep, somewhat roundish depression. The clypeus is incised, with

the edges acute; with a strong glass it is seen to be pitted with round shallow

depressions ; the mandibles and sometimes. the labrum are piceous; the mandibles have

a subapical tooth. ‘The eyes are comparatively small; the second radial cellule is a

little shorter than the first; the transverse radial nervure is received a little in front of

the third transverse cubital. The first transverse cubital nervure is distinct; the first

cubital cellule is comparatively large; the second is longer than the third, but much

narrower than it; in the second cubital cellule is a horny point; the recurrent

nervures are received a little in front of the cellules, the transverse median nearly in

the middle; the accessory nervure in the posterior wings is appendiculate. The cenchri

are fuscous.

Judging from the description, this species would appear to come close to P. inferen-

tium, Norton, of which only the male has been described; but the present species

appears to have longer. antenne, those organs in P. inferentium being “ short, not

longer than to scutellum.”

EMPHYTUS.—HYLOTOMA. 35

EMPHYTUS.

Tenthredo, Fam. ix. (Emphytus, p.), Klug, Berl. Mag. viii. p. 278 (1819).

Emphytus, Sect. i., Hartig, Blattw. p. 247 (1837). .

Forty-six Palearctic species of this genus are known, mostly from Europe; but

species are also known from Asia Minor, Algeria, Persia, and Japan. Seven species

have been recorded from North America, where the genus is less numerously repre-

sented than Harpiphorus, which differs from it only in having a median cellule in the

posterior wings. This is the first record of the genus in the Neotropical Region.

1. Emphytus championi. (Tab. II. fig. 13, 2.)

Niger, longus, nitidus, tegulis pronotoque albis; abdomine pedibusque luteis; tarsis posticis tibiarumque apice

fuscis ; alis subfumatis, costa et stigmate nigris.

Long. 8 millim.

Hab. Guatemata, Purula (Champion).

Head faintly punctured, frontal area indistinct, clypeus truncated at the apex.

Antenne a little longer than the abdomen, finely pilose, third joint longer than the

fourth. The transverse radial nervure is interstitial; the transverse median is received

a little beyond the middle of the cellule. Claws simple. Sheath of the saw black.

Very similar to the European £. serotinus, K1.; but that is broader and stouter, the

pronotum is quite black, the third and fourth joints of antenne subequal, &c.

2. Emphytus mexicanus.

Niger, genibus, tegulis tibiisque anticis sordide albidis ; alis fuscis.

Long. 8 millim.

Hab. Mexico (de Saussure).

The transverse radial nervure is received in the apical third of the second cubital

cellule, the transverse median in the middle; the head is slightly rugose, clypeus

shortly incised. The antenne are shortly pilose, the third joint longer than the

fourth ; the blotch is broad and white. There seems to be a pale line on the pro

notum ; but it is not very distinct.

This species is quite identical in coloration with the European Emphytus tener, Fall.

Subfam. HYLOTOMINA.

HYLOTOMA.

Hylotoma, Latreille, Hist. Nat. iii. p. 302 (1802).

Arge, Schrank, Fauna Boica, ii. pt. 2, p. 226 (1802).

This is a very extensive and widely distributed genus. Forty-four Palearctic species

are known, eleven from the East Indies, fifteen from the Ethiopian Region, twenty

from America north of Mexico, and twenty from South America.

FF 2

36 HYMENOPTERA.

1. Hylotoma basimacula.

Cerulea, nitida, pilosa, antennis nigris, abdominis basi tibiisque (apice excepto) albis, alis violaceis.

Long. 13 millim.

Hab. Panama, Bugaba (Champion).

The antenne are thick, semiclavate, longer than the thorax, shortly pilose and

grooved. The lower ocellus is placed in the frontal groove, which is wide and shallow

and ends in the middle of the face, where its apex is not margined ; the face below it

is covered with scattered white hair. The clypeus is incised at the apex. The blotch is

broad, and forms a conspicuous white mark. ‘The wings are rather long; in the middle

of both wings at the base is a small hyaline space; the second cubital cellule is a

little shorter than the upperside of the third, and longer than its lower; the third is

produced on the upperside; the third transverse cubital nervure almost touches the

apical cellule; the second recurrent nervure is almost interstitial; the transverse

median is received close to the basal third of the cellule.

This species is allied to H. eximia; but it is easily separated from it by the totally

violaceous wings and black tarsi and apex of the tibie. The two are quite different

in coloration frem the other Central-American species.

2. Hylotoma eximia.

Hylotoma eximia, Kirby, List of Hymen. i. p. 65, t. 5. f. 11".

Hab. Mexico, Orizaba!.

3. Hylotoma dorsalis.

Hylotoma dorsalis, Klug, Jahrb. 1. 1834, p. 236. 441; Norton, Proc. Amer. Ent. Soc. i. p. 67,

iv. p. 78; Kirby, List of Hymen. i. p. 69°.

Hab. Mexico’, Oaxaca”; GuatTeMaLa, Duefias, Capetillo (Champion).

Klug’s description is very laconic, and I am not quite clear as to the specimens from

Guatemala being identical with H. dorsalis. The antenne are densely pilose and

slightly furrowed. The frontal area is flat behind, and without a clear border there ;

beyond the ocellus the border is distinct, and the area is there moderately deep, espe-

cially at the apex; the antennal fovea is long, and tapers gradually to a point; the base

is deeper than the apical half. The wings are blackish ; the second recurrent nervure

is almost interstitial; the transverse median nervure is received beyond the middle of

the cellule. The head, thorax, and abdomen are bluish black (Klug describes these

parts as “ black” in his #. dorsalis) ; the pronotum, tegule, mesonotum with scutellum

red; the metathorax is black.

Norton seems to think that H. dorsalis is identical with H. scapularis, Klug, a com-

mon North-American species ; but the specimens I have described are certainly different

—differing from H. scapularis in their longer antenne, in there being no “large spot

HYLOTOMA. 37

on the pleura;” the costa and stigma are black, not ye llowish, while, again, the second

recurrent nervure in H. scapularis is not interstitial.

4. Hylotoma procera.

Hylotoma procera, Klug, Jahrb. i. p. 235. 88; Norton, Catal. p. 38. 10'.

Hab. Mexico}.

5. Hylotoma vittata.

Hylotoma vitiata, Kirby, List of Hymen. i. p. 70, t. 6. f. 2".

Hab. Mexico}.

6. Hylotoma bivittata. (Tab. Il. fig. 14, 9; 14a, antenna; 144, head.)

Lutea, antennis (basi excepta), maculis mesonoti et mesosterni, abdominis apice, genibus 4 posterioribus, tarsis

tibiarumque apice nigris, ore, facie tibiisque albidis ; alis violaceo-fumatis, costa et stigmate fuscis.

Long. 10 millim.

Hab. Panama, Volcan de Chiriqui, 2000 to 3000 feet (Champion).

The antenne are as long as the abdomen and are shortly pilose ; the antennal fovea

is wide and does not taper much towards the apex. The face below the frontal area

is white, the tips of the mandibles piceous, the greater part of the lobes of the meso-

notum (except the apex of the middle and the sides of the lateral) and the tegule are

black ; the second recurrent nervure is received beyond the second transverse cubital,

but at no great distance from it; the third cubital cellule is wider at the apex above

than on the lower side; the posterior wings are lighter-coloured than the anterior. The

black on the mesosternum forms either one mark or it may be divided into three. The

calcaria are black.

The mesonotum with only the middle lobe is black, the tegule testaceous, the

abdomen with only the two apical segments and the sides of the third black above (the

type has the four apical segments completely black).

The tegule in the typical form are sometimes fuscous, and more rarely testaceous.

The wings, too, differ in the intensity of the tint.

What I take to be the male has the four posterior tibie and tarsi black, the extreme

apex only of the abdomen and the apex of the middle lobe of the mesonotum are

black.

7. Hylotoma testacea.

Testacea, antennis (basi excepta), capite, abdominis apice, tarsis tibiarumque apice nigris; ore facieque inferne

pallide testaceis; mesosterno fusco; tibiis albidis; alis hyalinis, apice obsoleto violaceo-fuscis, cellula

cubitali tertia altitudine breviore ; costa et stigmate testaceis.

Long. 9 millim.

Hab. Costa Rica (Van Patten).

The antenne are as long as the abdomen, shortly and closely pilose. The frontal

38 HYMENOPTERA.

area is rounded (but not broadly) behind, and projects very slightly at the frontal

ridge; the antennal fovea projects a little at the apex of the tubercle, which is small

and sharply pointed; and the fovea retreats somewhat abruptly from it towards the

apex; the second recurrent nervure is received close to the basal fourth of the third

cubital cellule, which is much broader than long; the spurs are white.

8. Hylotoma pecila. |

Hylotoma pecila, Klug, Jahrb. p. 239. 54; Norton, Trans. Amer. Ent. Soc. i. 68°; Catal. p. 38

9& 3°; Kirby, List of Hymen. i. p. 70’.

Hab. Mexico, Orizaba?, Cordova 1, Tampico, Huastec, Tierra fria (H. de Saussure) ;

GUATEMALA, Panzos (Champion).

9. Hylotoma intermedia.

Rufo-testacea, antennis, capite, abdominis apice, tarsis tibiisque posterioribus nigris; alis fuscis, medio flavo-

hyalinis ; costa et stigmate nigris, basi testacea.

Long. 10 millim.

Hab. Guatema.a, Panzos (Champion).

The antenne are thickened towards the apex ; they are nearly as long as the abdomen,

very slightly pilose and grooved; the two basal joints are dull testaceous. The frontal

area is rounded: behind, and is not very deep; the antennal fovea is broad, tapers

gradually, but not sharply, towards the apex, and is contracted very slightly towards

the middle; in the deeper basal half is a blunt raised point. ‘The wings are deep —

bluish black at the base, the apex is lighter-coloured ; the hyaline central part consists

of the first cubital cellule, the base of radial and of the second cubital cellule with the

median cellule and the portion below it. ‘The second recurrent nervure is received a

little distance beyond the second transverse cubital nervure. ‘The calcaria and spines are

long and pale testaceous in colour; the claws are simple. The labrum is dull testa-

ceous, the mandibles piceous; the palpi are testaceous. _

Differs from H. pecila, K1., in the mesonotum being without black, in the hyaline

part of the wings being more extended, in the second recurrent nervure being received

at a greater distance from the second transverse cubital, and in the spurs and meta-

tarsus being longer.

10. Hylotoma fascialis.

Hylotoma fascialis, Norton, Trans. Amer. Ent. Soc. i. p. 69 (1867) *.

Hab. Mexico (de Saussure +).

This species is allied to H. pecila, but is readily known from it by the shorter

antenne, wholly white fusco-testaceous tibiz and tarsi (except the apices of the latter),

and by the narrower fuscous clouds in the wings, the apical portion of which only

HYLOTOMA. 39

commences at the second transverse cubital nervure. The apex only of the posterior

tibiee is fuscous. .

From H. nigriceps it differs in‘having two vitte on the mesonotum, no black mark

on the pectus, while only the tips of the tarsi are black ; the third transverse cubital

nervure is not curved, nor is the third cubital cellule wider above than below, as it is

in nigriceps, while it is perceptibly shorter (especially on the upperside) than the

second; the transverse median cellule is received before the middle of the cellule;

and the second recurrent nervure is received further from the second transverse cubital.

11. Hylotoma nigriceps. (Tab. IV. fig. 1, saw.)

Lutea, antennis (basi excepta) vertice lete, mesosterno, abdominis apice, tarsis tibiarumque apice nigris; alis

flavescenti-hyalinis, apice ceruleo-fumato, cellula cubitali tertia apice producto, stigmate et costa testaceis.

Long. 9 millim., g§ 73 millim.

Hab. Nicaragua, Chontales (Janson).

The antenne are a little shorter than the abdomen, thickly pilose, the two basal

joints testaceous, the base of the terminal joint more or less fuscous. ‘The face from

below the frontal area with the mandibles pale testaceous; the apex of the mandibles

piceous ; behind the ocelli the head is brownish testaceous. The frontal area is rounded

behind, projecting at the sides at: the frontal ridge, the apex is truncated. The antennal

fovea tapers gradually to the apex; at the base is a raised point. The third cubital

cellule is much wider above at the apex than it is on the lower side; the second

recurrent nervure is received very close to the second transverse cubital. The spurs

and calcaria are white.

What is probably the male agrees with the female in coloration, except that the

vertex is entirely black, or very nearly so; the frontal area is sharply pointed behind,

not rounded as in the female, while the third cubital cellule is not nearly so much

produced at the apex.

12. Hylotoma lepida.

Hylotoma lepida, Klug, Jahrb. i. p. 239. 53; Norton, Trans. Amer. Ent. i. p. 71".

Tab. Mexico, Orizaba!.

13. Hylotoma consobrina.

Hylotoma consobrina, Norton, Trans. Amer. Ent. Soc. iv. p. 78°.

Hab. Mexico}.

14. Hylotoma semifusca. (Tab. I. fig. 11.)

Hylotoma semifuscus, Norton, Trans. Amer. Ent. Soc. i. p. 69; Cat. p. 39. no. 23°.

Hab. Mexico (de Saussure), Orizaba1.

A species very closely allied to, but quite distinct from H. annulipes.. It has two

40 HYMENOPTERA.

longitudinal black lines on the vertex; and the pectus is more or less black. The

antenne are shorter and thicker, the frontal area is truncated, not rounded at the apex,

and the sheaths of the saws are entirely black.

15. Hylotoma annulipes. (Tab. I. figg. 2; 2a, maxilla.)

Lutea, antennis (basi excepta) abdominisque apice nigris ; ore facieque albidis ; vertice pro parte nigro, vel toto

testaceo; pedibus nigris, coxis, trochanteribus femoribusque anterioribus dimidio apicali testaceis, tibiis

anterioribus fere totis, posterioribus basi et basi tibiarum lete albidis'; alis flavo-hyalinis, apice lete

fumatis.

Long. 9-10 millim.

Hab. Guatemata, San Gerénimo (Champion) ; Panama (Boucard).

The antenne are as long as the abdomen, closely and densely pilose. The frontal

area is semitruncated behind, six-angled ; the antennal fovea is wide, and tapers gradually

to the point; there is no tubercle at the base. The clypeus is roundly incised. In

the female the vertex is more or less marked with black, the ground-colour being

brownish testaceous ; sometimes the black is entirely absent. ‘The face from below the

frontal area is white, as are also the mandibles. ‘The third cubital cellule is broader

than long; at the top and bottom of the second and third transverse cubital nervures

are two bull; from each bulla on the second nervure runs a spurious vein, which joins

the bulle on the third nervure. The second recurrent nervure is received a little past

the second transverse cubital; the basal nervure, costa, and stigma at the base are

testaceous ; from the apical half of the stigma they are fuscous; at the extreme base

of the wings the nervures (save the costa itself) are deep black. The amount of black

on the apex of the abdomen varies; usually the four apical segments are black above ©

and at the sides, but not beneath; the sheath of the saw and the cerci are testaceous.

The intensity of the fuscous colour of the apex of the wings varies; the third trans-

verse cubital nervure is curved. The spurs are pale.

The male is similar, save that the vertex and the head behind are quite black.

16. Hylotoma bipartita. °

Lutea, vertice, macula magna pleurali, abdominis apice, coxis posticis, femoribus, tibiarum posteriorum basi

tarsisque nigris, tibiis albidis ; alis flavescenti-hyalinis, apice fumatis.

Long. 12 millim.

Hab. Panama, Bugaba (Champion).

In the only specimen I have the flagellum is broken off; the scape is testaceous.

The frontal area is longer than broad, truncated before and behind, six-angled ; the

antennal field is deep, sharply pointed at the apex; at the base is a roundish fovea.

From the frontal area a ridge runs towards the eyes. The second cubital cellule is

about one third longer than the third, which is dilated at the apex. All the knees are

white; the anterior femora are testaceous in front on the lower side, and the anterior

tarsi are testaceous at the base. The middle of the head behind is obscure testaceous.

HYLOTOMA. 4]

Closely allied to H. albitidialis, but larger and broader ; the abdomen is longer, the

vertex broadly black; the frontal area broader behind; the transverse median nervure

is received almost in the centre of the cellule, the third cubital cellule is longer, the

nervures are much deeper in tint, the anterior femora are broadly black, and the apices

of tibiz are not black.

17. Hylotoma albitibialis.

Lutea, antennis (apice excepto), macula mesosterni, abdominis apice, femoribus posterioribus fere totis, tarsis

apiceque tibiarum nigris, tibiis albidis ; alis flavescenti-hyalinis, apice fumatis, costa et stigmate testaceis,

Long. 84 millim.

Hab. GuateMaa, Zapote (Champion).

The antenne are a little longer than the head and thorax, and thickened but very

slightly towards the apex; the frontal area is truncated behind, distinctly six-angled,

longer than broad; the antennal fovea wide, deep, and with a small tubercle. The

clypeus is but very slightly incised ; the third cubital cellule isnot much longer than wide,

wider at the apex than at the base; the second recurrent nervure is received towards the

basal fourth of the third cubital cellule; there are two bulle in each of the second and

third transverse cubital nervures, which are joined by spurious veins. The calcaria

are long and reach beyond the middle of the metatarsus. The black mark on the

mesosternum may be divided in the middle.

18. Hylotoma fasciatipennis.

Rufo-testacea, antennis nigris, basi testacea ; pedibus pallide testaceis, tibiis apiceque tibiarum late et abdo-

minis apice nigris ; alis fumatis, medio flavescenti-hyalinis, costa et stigmate fere totis fuscis.

Long. fere 7 millim.

Hab. Guatemata, Capetillo (Champion).

The antenne are a little longer than the head and thorax, pilose and not perceptibly

thickened towards the apex; the frontal area is not much broader than long, semi-

truncated behind; the antennal fovea is comparatively short and wide, and bears no

tubercle ; the clypeus is but very slightly incised. The ocelli are narrowly surrounded

with black; the second recurrent nervure is received a very little past the second trans-

verse cubital; the third cubital cellule is a little longer than wide, at the top it is

not much wider than at the bottom at the apex; the third transverse cubital nervure

is straight. The hyaline portion of the wings extends from the base of the stigma

(which is testaceous) to the base of the median cellule. The three apical segments are

more or less black above and. at the sides; the sheath of the saw is testaceous, with the

upperside black. The spurs are testaceous, short, and do not reach to the middle of

the metatarsus,

BIOL. CENTR.-AMER., Hymenopt., September 1883. | GG

Ady ~

77. ra

“

42 HYMENOPTERA.

DIELOCERA.

Hylotoma, § 2, Klug, Jahrb. d. Insect. i. p. 240 (1834).

Dielocerus, Curtis, Trans. Linn. Soe. xix. p. 249 (1845).

Pitilia, Section 2, Norton, Trans. Amer. Ent. Soc. ii. p. 367 (1869).

Ptenos, Norton, 1. c. iv. p. 77 (1872).

Hemidianeura, Kirby, List of Hymen. i. p. 48 (1882).

In this genus and in Ptilia the first transverse cubital nervure may be absent

entirely, or be but very faintly indicated even in species where it is normally present ;

in other cases its absence would appear to be a secondary sexual character. The main

distinction between Dielocera and Ptilia is that in the former the second cubital

cellule (or first when the first transverse cubital nervure is absent) receives both recur-

rent nervures, while in Ptiléa is receives only one.

I cannot look upon the absence of the first transverse cubital nervure as of generic

value, because, as above stated, it tends to become obsolete even in species where it,

as a rule, is found; in nearly all the Hylotomina it is bullated, and there can be no

doubt that the “bulla” is the cause of the partial or complete obliteration of the

nervure. Even the point of difference between Jielocera and Ptilia I have just

mentioned must be accepted with reserve; for I find that when the second recur-

rent nervure is interstitial (7.e. is united to the transverse cubital), it is apt to vary

in position and may be received either in the second or third cubital cellule. I have

not yet succeeded in finding other structural characters whereby these forms may be

generically separated.

1. Dielocera biramosa. (Tab. I. figg. 10, 2, Didymia biramosa; 10 a, labrum ;

105, maxilla; 10 ¢, mandible.)

Hylotoma biramosa, Klug, Jahrb. d. Insect. i. p. 242. 64 (1834)'.

Ptilia biramosa, Norton, Trans. Amer. Ent. Soc. i. p. 61 (1867).

Ptenus (2) biramosus, Kirby, List of Hymen. i. p. 532.

Hab. Mexico}, Vera Cruz, Orizaba.

2. Dielocera imitatrix. (Tab. I. figg. 4, 9, Ptilia imitatrix; 4a, head.)

Nigra, pronoto, tegulis, mesosterno scutelloque rufo-testaceis ; pedibus albis, tarsi tibiisque posticis dimidio

apicali nigris; alis fumatis.

Long. 11 millim.

Hab. Guatemata, Duefias (Champion).

‘The antenne are a little longer than the thorax, shortly and closely pilose. The

clypeus bears a few scattered punctures, and is slightly incised at the apex. The

sutures on the vertex are deep and broad; there is a transverse one behind the ocelli;

the frontal area is long, depressed; the labrum is piceous; the outer sides of the

mesonotum are dull testaceous. Only the upper fourth of the mesosternum is reddish

DIELOCERA.—PTILIA. 43

testaceous. The head projects behind the eyes, which are oblong; the first cubital

cellule is as long as the second on the lower side, but much shorter on the upper, owing

to the radial nervure issuing from the stigma. The cubital nervure is curved at the

base and issues from the transverse basal; the third cubital cellule is longer than

second ; the cubital nervure ends a little beyond the third cubital cellule; the first

recurrent nervure is received quite close to the first transverse cubital nervure, the

second in the middle of the cellule opposite the horny point. There is a bulla on the

first transverse cubital nervure, one on the junction of the second recurrent with the

cnbital, on second and third transverse cubital, and on the stump of the cubital after

the latter; there is a horny point in costal cellule.

8. Dielocera filiformis.

Ptila filiformis, Norton, Trans. Amer. Ent. Soc. i. p. 62 (1867) ; Cat. p. 32, p. 2? (9).

Hemidianeura scapularis, Kirby, List of Hymen. i. p. 49. no. 3, t. 8. f. 15? (@).

Hab. Mexico, Oaxaca 2, Cordova 1.

This is a smaller species than D. imitatrix, and differs from it otherwise in having the

seutellum black, the testaceous colour under the wing more extended, the four anterior

femora for the greater part and only the extreme apex of the hinder tibie black, and

the second recurrent nervure is received quite close to the third transverse cubital.

4. Dielocera crassa.

Rufa, antennis, capite, pectere pedibusque nigris; tibiis tarsisque 4 anterioribus sordide testaceis ; alis fuscis,

costa stigmateque nigris.

Long. 6 millim.

Hab. Mextco, Presidio (Forrer).

The antenne are stout, roughly pilose, and not much longer than the thorax; the

face is finely punctured, not smooth and shining like the vertex; the mandibles are

piceous. There is a large bulla in the first transverse cubital nervure ; the first cubital

cellule is longer on the lower side than the second, which is not quite double the length

of the third ; the first recurrent nervure is received quite close to the first transverse

cubital; the second recurrent is interstitial. The legs are stout; the spurs not one third

of the length of the metatarsus, which is about the length of the three following joints ;

the fourth joint is as long as the two preceding. The sheath of saw is deep black and

pilose.

PTILIA.

Ptila, St.-Fargeau, Mon. Tenthr. p. 49 (1823) ; Enc. Méth. x. p. 237 (1825).

Didymia, St.-Farg. & Serv. Enc. Méth. x. p. 574 (1825).

Scobina, St.-Farg. & Serv. 1. c. p. 574,

Hylotoma, § 4, Klug, Jahrb. d. Insect. i. p. 245 (1834).

Rusobria, Cameron, Trans. Ent. Soc. 1878, p. 150.

aa 2

44 _ HYMENOPTERA.

1. Ptilia versicolor. (Tab. I. figg. 9, Didymia versicolor; 9a-c, trophi; 9 d,

saw; 9¢, antenna; 97, head.)

Hylotoma versicolor, Klug, Jahrb. d. Insect. i. p. 246. no. 83 (1834).

Didymia versicolor, Norton, Trans, Amer. Ent. Soc. i. p. 60°.

Ptilia basipunctata, Kirby, List of Hym. i. p. 46. no. 12, t. 3. £. 11%.

Hab. Mexico}, Vera Cruz?; Guatemaua, El Reposo 800 feet, Cahabon (Champion) ;

Honpvras.

The base of the wings in one or two specimens is quite black, the usual hyaline

spot being entirely obliterated.

2. Ptilia concinna.

Hylotoma concinna, Klug, Jahrb. d. Insect. i. p. 246. no. 82, t. 2. f. 8 (1834)".

Hab. Mexico }.

3. Ptilia nasuta. (Tab. III. figg. 1, 9; la-d, tarsus; le, spurs: Tab. IV.

fige. 2, maxilla ;+2 a, saw.)

Nigra, nitida, genibus tibiisque anticis sordide testaceis, pronoto mesonotoque rufis ; alis fumatis, fascia media

apiceque hyalinis.

Long. 8 millim.

Hab. Panama, David, Chiriqui (Champion).

The antenne are not much longer than the thorax, thickish, scarcely tapering towards

the apex, fuscous black, covered with a short close pile. The front is considerably

raised and bounded by the sutures, which are not very deep; the posterior part is

separated from the ocelli by a deep suture, which, however, is not continuous, there being

a ridge in the middle. The lower ocellus is placed in a deep and wide pit ; the frontal

area becomes narrower towards the apex, and is prolonged between the antenne into

a sharp-pointed keel, which bears the antennal fovea (which is small and indistinct)

at its top; at the bottom its sides spread out, and it is bounded by a transverse

furrow situated above the clypeus, which is convex and is truncated at the apex.

The mandibles are piceous. The pronotum and mesonotum with the scutellum and

upper half of the mesopleure are red, save the middle lobe of the mesonotum. The

tegule are red. The fore wings are black at the base to the transverse median nervure,

and the black cloud is continued along the lower border of the wing ; a broad middle

fascia extends from the stigma to the end of the second transverse nervure, the part below

the cubital nervure being narrower than the upper, which does not extend much beyond

the third transverse cubital nervure. The first transverse cubital nervure is faintly indi-

cated at the top, nearly opposite the first recurrent nervure, which would make the first

cubital cellule longer than either the second or third, the indication of the first transverse

cubital nervure being at a little distance from the base of the stigma; the third cubital

PTILIA.—SERICOCERA. 45

cellule is a little longer than the second, and its outer bounding nervure is curved ; the

second recurrent nervure is received a little past the second transverse cubital, the

transverse median a little in front of the middle of the cellule. The posterior wings

are only blackish at the base.

This species seems to agree with P. compressicornis, Cam., in coloration, except that

the latter has the wings only darker at the apex.

4. Ptilia fusca.

Ptila fusca, Klug, Jahrb. d. Insect. i. p. 247. no. 87 (1884) *.

Hab. Mexico 3,

SERICOCERA.

Sericocera, Brullé, Hymén. iv. p. 669 (1846).

Cyphona, Dahlbom, Comp. Tenth. p. 6 (1835).

Gymnia, Spinola, Mem. Accad. Torino (2) xiii. p. 23.

Trailia, Cameron, Trans. Ent. Soc. 1878, p. 148.

I have unfortunately no American species of Schizocera; bat a comparison of Seri-

cocera with European species of that genus shows that the only points of difference

between them of any importance is that in Schizocera the antenne are placed imme-

diately over the mouth and the epistoma is not keeled, while in Sericocera the latter

is carinated as in Hylotoma, and the antenne are situated in the middle of the head.

The antenne in Sericocera are longer in both sexes, and the lanceolate cellule is very

shortly constricted in most of the species; but this is also the case in some species of

Cyphona. In the majority of the species there are four cubital cellules; but the first

transverse cubital nervure is bullated largely in the middle, so that it is almost oblite-

rated, and in some cases no trace of it is visible at all, even in species where it is

normally present to some extent at least. Hence no great reliance can be placed on

the absence of this nervure as a generic character. The greater length of the antenne

in the American species compared with those of the European species of Cyphona can

scarcely be looked upon as a generic character, and in point of fact some of the Neo-

tropical species have them comparatively short; so that Cyphona (the type of which has

the antenne situated as in Sericocera and the front carinated) must be regarded as

identical with Sericocera ; but inasmuch as the same species formed the type for both

Cyphona and Schizocera, Brullé’s name must be used in preference. What I have said

(antea, p. 42) about the absence of the first transverse cubital nervure applies equally

well to Sericocera.

1. Sericocera edwardsii,

Sericocera edwardsii, Cresson, Trans. Amer, Ent, Soc. viii. p. 2 (1880) '.

Hab. Mexico}, Mazatlan.

46 HYMENOPTERA.

2. Sericocera mexicana.

Gymnia mexicana, Kirby, List of Hymen. i. p. 43, t. 3. f. 17 (1882).

Hab. Mexico, Orizaba.

This species does not seem to differ much from S. edwardsit.

3. Sericocera alternator. (Tab. III. figg. 4, 2 ; 4 a, tarsus ; 4b, calcaria ;

4c, maxilla; 4d, saw; 5, ¢; 5a, head and antenne of ¢ .)

Sericocera alternator, Norton, Trans. Am. Ent. Soc. i. p. 53; Catal. p. 23. 3°.

Hab. Mzxico!, Jalapa (de Saussure) ; GuaTEMALA, Quiche Mountains 7000 to 9000

feet (Champion).

I presume the Quiche specimen is identical with Norton’s species. Norton says that

the anterior legs are pale in front ; and thisis the case with my specimen, but the pale-

ness is owing to a dense covering of short white hair. The antenne (which were defec-

tive in Norton’s solitary specimen) are scarcely longer than the thorax, are rather

thick, and taper but slightly towards the apex; they are densely covered with short

black hair and grooved at the side. In the left antenne there is on the underside a

projecting process, which is nearly as long as the breadth of the second joint, as broad

as half its length, and truncated at the apex; it seems to be a malformation. The

antennal fovea is absent, or nearly so; the frontal area is flat and ill defined ; the lower

ocellus is not in a basin, and round the innerside of the outer two is a short, thick,

blunt ridge. The transverse median nervure is received in the centre of the cellule.

The female has the mesonotum quite black, or rather bluish black, the black on the

sternum is more extended up onto the pleure; the antennal fovea is small, round,

and not very deep; the ridges at the side of the ocelli are not so clearly defined; the

front between the antenne is sharper, almost carinated ; the anal segments above are

pitted with round, shallow punctures; the anal appendages black, projecting and pilose ;

the antenne are as long as the abdomen and half the thorax, thin, covered with long

_ black hair, which projects from the sides and below, but not from the upperside.

4. Sericocera quercus. (Tab. I. fig. 15, 2.)

Rufo-flava, antennis, capite, sterno, macula mesonoti, metanoto pedibusque nigro-violaceis; alis violaceo-

fumatis.

Long. 11 millim.

Hab. GUATEMALA, Quiche Mountains 7000 to 9000 feet ( Champion).

The frontal sutures are deep; frontal area not well defined from the surrounding

region, flat, the apex narrower and with a fovea which is longer than broad, narrower

at the apex, and separated from the ocelli by a broad and flat ridge; lower ocellus’

in a shallow depression. Clypeus truncated at the apex. Antenne shorter than

_ SERICOCERA. 47

thorax, very shortly pilose, the apex slightly thickened. The recurrent nervures are

received in the basal third of the cellules; the third cubital cellule is dilated at the

apex above, the upperside being more than double the length of the lower; the third

cubital nervure curved. The wings are lighter-coloured towards the apex.

Differs from S. alternator in having the middle lobe of the mesonotum blue, in the

anterior legs being entirely black in front, in the blue on the metathorax extending to

the apex of the scutellum, in the darker-coloured wings, in the first transverse cubital

nervure being present, but with a bulla in the centre, in the first recurrent nervure

being received in the basal third of the cellule, not in the middle as with S. alternator,

and by the third cubital cellule being double the width of the bottom at the top.

Mr. Champion sends along with the female a small bit of the leaf of an oak, on

the lower side of which are arranged sixteen eggs in four rows. The eggs are about

1 millim. in length, of the usual shape, pinkish in colour, and are but slightly embedded

in the leaf, from which they stand erect.

5. Sericocera villosa. (Tab. II. fig. 15, 2.) |

Sericocera villosus, Norton, Trans. Am. Ent. Soc. i. p. 52; Cat. p. 23 (2).

Sericocera plumicornis, Norton, |. c. p. 53 (g) ; Cat. p. 22 (g)’.

Hab. Mexico, Cordova (de Saussure)! ; GUATEMALA, Quiche Mountains 7000 to 9000

feet (Champion).

The male has the wings lighter-coloured than in the female. With it the first trans-

verse cubital nervure is sometimes obliterated, and the accessory nervure in the hind wings

is obliterated entirely ; in the female the former is appendiculated towards the middle.

6. Sericocera leucotarsis. (Tab. III. fig. 2, 2.)

Nigro-cerulea, pronoto flavo-rufo; tarsis posterioribus albidis; alis fumatis, cellula @ubitali tertia breviore,

apice non producto.

Long. 73 millim.

Hab. GuateMata, Cerro Zunil, 4000 feet (Champion).

The front between the antenne sharply projects and bears on its apex above the small,

oval, but deep and clearly defined antennal fovea; the lower ocellus has a deep surround-

ing furrow behind ; the frontal area is depressed in the middle ; the sutures on the vertex

are narrow behind the ocelli. The antenne are a little shorter than the abdomen, covered

with black, moderately long hair. The transverse median nervure is received in the

middle of the cellule; the first recurrent nervure a little before the middle ; the second

in the middle; the third cubital cellule is of nearly equal length throughout and is

half broader than long. The metatarsus isas long as all the other joints together ; the

spurs are black ; the two apical joints black ; claws simple. The blotch is narrow, and

at its termination there is a thin pale band going across the segment.

48 HYMENOPTERA.

Easily known from 8. villosa by the short non-dilated third cubital cellule and black

coxe and femora, these being in S. villosa yellowish, it having besides a distinct first

transverse cubital nervure.

7. Sericocera leucopoda. (Tab. III. fig. 3.)

Nigra, clypeo, labro, antennis basi pedibusque albidis, tarsis tibiarumque posticarum apice nigris ; pronoto,

mesonoto cum scutello mesopleurisque supra rufis; alis fumatis, cellula cubitali tertia altitudine bre-

viore, apice non producto.

Long. 7 millim.

Hab. Panama, Bugaba (Champion).

The frontal sutures are deep; the frontal area is raised, and has a thick sloping

border, is hollow in the centre, and becomes narrower and shallower towards the apex;

but the apex has a small depression which is separated from the upper hollow by a

shallow ridge. The apical ocellus is bounded by the deep furrow of the frontal area.

The front between the antenne is carinated; the clypeus is truncated at the apex.

The middle lobe of the mesonotum and the base of the pronotum are marked with

black. The transverse median nervure is united to the accessory nervure, which ends

at the junction of the two; the first recurrent nervure is received in the basal third of

the cellule, the second close to the second transverse cubital nervure ; the third cellule is

shorter than broad, the top a little narrower than the bottom; the third transverse

cubital nervure is curved. The antenne are filiform, densely pilose, and nearly as long

as the abdomen; the basal joints are white on the underside, as is also the face

between the antenne and the clypeus.

8. Sericocera leta.

Nigra, facie palpisque sordide albidis; prothorace, mesonoto cum scutello, pleuris tegulisque rufis ; pedibus albis,

tibiis dimidio apicgji tarsisque nigris ; alis fumatis, stigmate fusco.

Long. 6 millim.

Hab. Panama, San Felix (Champion).

The antenne are thin, as long as the thorax and head together, densely pilose,

tapering towards the apex; sutures on vertex indistinct; frontal and antennal areas

obsolete, the lower ocellus situated in a very shallow pit ; clypeus shortly and roundly

incised. Abdomen short, not much longer than the thorax, truncated at the apex;

sheath covered with long hairs. Wings long; third cellule almost square, not longer

than the first; second dilated at apex, and with a horny point.

Allied closely to S. leucopoda, but is a shorter and broader insect ; the third cubital

cellule is longer, and the third transverse cubital nervure is not so bent; the second

recurrent nervure is received further from the second transverse cubital; the pit ir

which the lower ocellus is placed is not so deep nor so well marked as in 8. lewcopoda,

and the tibie are more broadly marked with black. The nervure along the upperside

of the radial cellule is very distinct, but does not form a cellule at the apex.

SERICOCERA. 49

9. Sericocera rufiventris.

Nigra, parva, pilosa, abdomine flavo-testaceo, alis fumatis. 9.

Long. 5 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

The antenne are as long as the abdomen, filiform, of nearly equal thickness through-

out, densely pilose. Head with the front very wide and broad, projecting, but not

sharply ; frontal sutures deep, broad, shining; frontal area not raised from the sur-

rounding part nor depressed in the centre. Antennal fovea large, oval, of moderate

depth; clypeus truncated; face covered with long scattered white hair. The third

cellule is a very little longer than the second on the lower side, and considerably longer

on upper, where it is dilated; recurrent nervures received in the basal fourth of the

cubital cellules ; transverse median nervure received a little before the middle of the

cellule; blotch large, broad, extending across the whole segment. Sheath of saw

black, covered with a short white down. The metatarsus is shorter than the succeeding

joints together.

10. Sericocera czrulea.

Cerulea, alis fumatis, pedibus nigris, pilosis. 9.

Long. 5-6 millim.

Hab. Panama, Volcan de Chiriqui 3000 to 4000 feet (Champion).

The antennz are slender, longer than the abdomen, densely covered with a longish

black pubescence. The front is broad, somewhat triangular above the antenne, and

with a small fovea at the apex; the face is covered with longish hairs. The first trans-

verse cubital nervure is distinct ; the second cellule is not much longer than the lower

side of the third, which is largely produced on the upperside, where it is as long as

the first and second cellules together ; the second recurrent nervure is received not far

from the second transverse cubital; the transverse median before the middle of the

cellule. The abdomen is not much longer than the head and thorax, and becomes

gradually narrowed towards the apex. The blotch is very large, and extends €most

right across the segment.

11. Sericocera truncata.

Nigra, nitida, tibiis anticis sordide testaceis, alis fumatis.

Long. fere 6 millim.

Hab. Guatemata, Duefias 2 , San Gerénimo ¢ (Champion).

The antennz are as long as the abdomen, shortly and densely pilose, and tapering

towards the apex; the sutures on the vertex are distinct, deep; the vertex behind the

ocelli separated from the latter by a deep furrow ; and a narrower and less deep furrow

runs from the upper ocelli to the eyes. Frontal area subdistinct, rounded at the lower

BIOL. CENTR.-AMER., Hymenopt., September 1883. HH

50 HYMENOPTERA.

end and immediately before the antennal fovea, which is not very deep and longer than

broad ; the lower ocellus is placed in a rather large depression. The clypeus is trun-

cated at the apex; there is a large and moderately deep depression on each side above

it. The wings are longer than the body; the apex is somewhat lighter than the base.

the first transverse cubital nervure is absent, but is indicated by a light band; the third

is oblique, not curved; the third (second) cubital cellule is not much longer than broad,

the apex at the top a very little wider than at the bottom; in the second (first) cubital

cellule is a distinct horny point. The transverse median nervure is received a very

little beyond the middle. The stigma is fuscous on the lower half. The body is short

and thick; the abdomen is not much longer than the head and thorax, and has the

apex truncated, with the saw but very little projecting; the feet are longish; the

femora reach near to the apex of the abdomen.

What I take to be the male has the antenne nearly as long as the abdomen and half

of the thorax; they are covered, but not very closely, with black hairs, which are very

nearly double the diameter of the antenne in length; the antenne taper distinctly —

towards the apex. The apical third of the anterior femora and the tibie in front are

testaceous. The greater part of the abdomen beneath is dirty white; the three basal

segments above are also dirty yellowish white. As usual with the male, the sutures on

vertex are not so deep.

Sericocera piciventris, Kl., from Brazil, agrees with the male in coloration, except

that the legs are entirely black, and it is also a larger species; but Klug only describes

the female of his species, which thus does not agree with S. truncata ? in coloration.

S. ngrita, Klug, again, agrees with the female in coloration, but only the male is

described by Klug.

12. Sericocera crassitarsis.

Nigra, nitida, parva, antennis basi, tegulis, genibus, tibiis tarsisque albido-testaceis ; alis fere hyalinis, stigmate

fusco, cellula cubitali tertia apice producto. ¢ 2.

Long. 5 millim.

Ho Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

The antenne are not longer than the thorax; the apical joint thin at the base, then

becoming thick and tapering but very slightly towards the apex; covered with a very

sparse microscopic pile. The front is broad; the vertex behind the ocelli has no

transverse furrow, nor is there a transverse furrow proceeding from the ocelli to the

eyes. ‘The lateral furrows on the vertex are broad and deep, and reach to a little below

the base of the antenne. ‘There is no defined frontal area; but the lower ocellus is in

a basin, and the antennal fovea is large, oval, and deep. The front between the antenne

is broad and curves down gradually. The fovee above the clypeus are small; the

mandibles and apex of labrum are piceous, and the face is covered with scattered white

hair. The third cubital cellule is at the bottom nearly double the length of the first

PACHYLOTA. 51

(second) transverse cubital nervure, which is not half the length of the second (third) ;

the first transverse cubital nervure is absent; the second recurrent nervure is received

quite close to the second (first) transverse cubital; the transverse median nervure is

received in the basal third of the cellule. The posterior tibie are darker than the

anterior; they are thin at the extreme base, but thicker than usual for the rest.

PACHYLOTA.

Pachylota, Westwood, Arc. Ent. i. p. 24 (1841).

The type of this genus was supposed to be from West Africa; but this no doubt is

a mistake for South America. ‘The genus contains only three species—two (including

P. audouinii, West.) from South America and one from Mexico. The absence of spurs

makes it a very distinct genus; but as P. varicolor has calcaria it is doubtful if it can

be regarded as a Pachylota.

1. Pachylota varicolor.

Pachylota varicolor, Norton, Trans. Amer. Ent. Soc. iv. p. 79 (1872) °.

Hab. Mexico 1.

Norton says that all the palpi are 4-jointed, and this is said to be also the case with

the type species ; but in P. sulcicornis, Cam., the maxillary palpi are certainly 6-jointed,

the three apical being much thinner than the three basal, and the joints can only be

seen with a good lens. The labial palpi are, as usual, 4-jointed.

Subfam. SYZYGONINA.

This subfamily may be distinguished as follows :—

Antenne short, thick, pilose, 6—7-jointed. Tibiz spined. One radial cellule shortly

appendiculated. Three or four cubital cellules. ‘Transverse basal nervure interstitial.

Lanceolate cellule obsolete. Posterior wings appendiculate; one discoidal cellule ;

accessory nervure obsolete. Scutellum large, longer than broad, rounded, and pro-

jecting at the apex, truncated behind.

Syzygonia has usually been regarded as belonging to the Cimbicina; but it differs in

so many important points from them that clearly it and its allies should form a separate

subfamily, which will also include Perga. Kirby forms a separate subfamily for

Loboceras, Perantheriz, and Aulacomerus. The latter genera certainly differ from

Syzygonia and Incalia in the structure of the trophi and in one or two other points ;

but I am not prepared to say that the form of the trophi (for the other differences are

not of great importance) is sufficiently important to raise the genera I have to subfamily

rank in view of so much agreement in other respects between them and Syzygonia. It

HH 2

52 HYMENOPTERA.

is doubtful, furthermore, if the relationship between the Neotropical genera and Perga

is real, for the points of agreement (apart from the spined tibie, the enlarged scapule,

and an agreement in the form of the scutellum) consist in a reduction in the number

of joints in the antenne and palpi, and in the lanceolate cellule being obsolete; and

these may have become degraded independently in both countries, so that on this view —

the resemblance in these respects cannot be looked upon as one of affinity. That the

number of joints in the antenne and palpi has been reduced rather than that six or

seven was the number with the ancestral Tenthredinide is shown alike by the fact that

the Siricidee (which are certainly older than the Tenthredinide) have multiarticulated

antenne, and that in badly developed specimens of Cimbex and Perga the club shows

two more joints than is usually present, that is to say, the joints have become amal-

gamated towards the apex. This view is further borne out by the antenne with few

joints being always clavate or semiclavate and short. The lanceolate cellule is one of

the characteristic features of the Tenthredinide. Jn the few cases where it is absent

there is either an abbreviation in the joints of the antenne or palpi, or both; and, so

far as I know, it is only absent in genera inhabiting Australia or South America. That

it has become obsolete is proved by its excessive reduction in Perreyia &c.; while the

accessory nervure in the hind wings is often absent in species where it is usually

present.

Subtribe SYZYGONIDES.

Labium entire. Labial palpi 3-jointed; maxillary 4-jointed. Cubital nervure issuing

from the transverse basal nervure. Spines and calcaria short, thick.

The above characters sufficiently distinguish the Syzygonides from the Lobocerides.

At present the only genera I can refer to this subtribe are Syzygonia and Incalia.

Whether Cephalocera, Klug, should be referred to it or to the Lobocerides is a question

that can only be settled by an examination of the type.

INCALIA.

Incalia, Cameron, Trans. Ent. Soc. 1878, p. 148.

This genus is exclusively Neotropical, and contains at present only one species. It

differs from Loboceras in having the antenne thicker throughout, in the spurs being

much shorter and thicker (not much more than one third of the length of the

metatarsus), in the hinder tibie bearing a spine, and in the palpi having fewer joints

(the maxillary palpi being 4- and the labial 3-jointed), besides being short and thick,

The basal joint of the maxillary palpi is the shortest, being, however, not much

shorter than the third, which, again, is shorter than the second; the fourth is the

longest and thinnest. The joints of the labial palpi are subequal. The mandibles are

INCALIA.—CORYNOPHILUS. 53

long and acute; the apical tooth is long ; at the middle the mandible thickens towards

the base, and where the thickening commences the edge is indented.

The genus Syzygonia (from Brazil) is very closely related to Incalia; but may be

known by its bare, distinctly clavate, 6-jointed antenne.

Syzygonia has the palpi 4- and 3-jointed, as with Zncalia. —

1. Incalia hirticornis. (Tab. III. figg. 6, 9; 6a, antenna; 68, labium; 6c,

tarsus and apex of tibia; 6 d, maxilla; 6 e, head, from front.)

Incalia hirticornis, Cameron, Trans. Ent. Soc. 1878, p. 143'; Kirby, List of Hymen. i. p. 82, t. 2. f. 16.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).—Amazons, Ega 1.

Subtribe LOBOCERIDES.

Labium with three lobes. Labial palpi 4-jointed ; maxillary 6-jointed. Cubital ner-

vure issuing from the costa. Spines and calcaria usually sharp and long.

CORYNOPHILUS.

Cephalocera, Klug (nec Latr.), Jahrb. d. Insectenkunde, i. p. 252.

Corynophilus, Kirby, List of Hymen. i. p. 32. .

It is doubtful if the following species is congeneric with Klug’s Cephalocera pumila,

for the radial cellule can scarcely be said to’ be appendiculated, nor can I detect any

traces of spines on the posterior tibie ; but as the spines are apt to be broken off, no

great reliance can be placed on their absence ona single specimen. In the form of the

antenne it agrees very well with Corynophilus, as it does also in neuration (with the

above-mentioned exception), and it differs from Loboceras in the short thick spurs and

in the form of the antenne. I think it best therefore to treat the only species I have

as a Corynophilus.

The type of the genus is from Brazil.

1, Corynophilus ruficollis.

Nigro-violaceus, antennis nigris, pilosis, prothorace mesonotoque cum scutello rufis, apice coxarum, trochante-

ribus oreque sordide albidis; alis fumatis.

Long. 6 millim.

Hab. Panama, Bugaba (Champion).

The antenne become gradually thickened towards the apex, and are about the length

of the thorax with the head; the third joint is about one fourth longer than the

following, which is a little loriger than the fifth ; the sixth is a very little longer than

broad ; last as long as the two preceding together. The sutures on vertex are deep

and reach to the antenne; from the lower ocellus runs a suture to a transverse margin

54 HYMENOPTERA.

which runs from one antenna to the other. Clypeus truncated at apex; labrum

rounded. Mandibles large, with one large apical tooth. Blotch very wide, white.

Abdomen longer than head and thorax together. Legs of moderate length; coxe

stout. The metatarsus is shorter than the other joints together; the long spur reaches

to its middle. Claws small, simple. The sheath of saw is covered at the apex with

long hairs; the saw itself bears stout waved teeth. The radial cellule has a stout

bordering nervure above, which does not form a distinct appendicular cellule at the

apex. First cubital cellule more than double the length of second on lower side;

second one fourth longer than broad. The basal nervure is interstitial. The breast

inclines to piceous in colour, as does also the pleure immediately below the wings,

and the prothorax laterally. The palpi are 4- and 6-jointed; first jot of maxillary

half the length of second, which is about the same length as fifth, third and fourth

subequal; sixth longer than any of the others; the basal joint of labial is thinner than

the rest and longer than fourth; second and third subequal, broader than long.

LOBOCERAS.

Cephalocera, Norton, Trans. Amer. Ent. Soc. i. p. 5. 1; Cat. p. 20.

Loboceras, Kirby, List of Hymen. i. p. 79 (1882).

This genus is closely allied to Cephalocera and Incalia, with both of which it agrees.

in having the same number of joints in the antenne and in the neuration of the wings, "

but differs from Jncalia at least (the structure of the trophi in Cephalocera is unknown)

in having the palpi 6- and 4-jointed, the spurs much longer, while there are spines

only on the middle legs ; in Lncalia and Cephalocera they are on the posterior tibie.

The posterior coxe are large, reaching to the fourth abdominal segment; the claws

are simple. The mandibles are formed pretty much as in Incalia; but, as above men-

tioned, the palpi are very different, being long, filiform, and 6- and 4-jointed. The first

joint of the maxillary palpi is small, the others subequal. The labium is large and broad ;

the palpi have the two first joints the longest, the two apical ones a little shorter and

thicker.

The genus is exclusively Neotropical, and contains eight Central-American species

and two from Amazonia. | :

1. Loboceras varicorne.

Testaceum, capite (ore excepto), antennarum medio, scutello, abdominis apice, tarsis tibiisque posticis fere totis.

nigris; alis fumatis, medio flavo-hyalinis.

Long. 9 millim.

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

The antenne are not much longer than the head and thorax, densely pilose, sub-

clavate; third joint about one half longer than fourth; the last two joints subequal ;

LOBOCERAS. 55

the three middle joints are black, the others testaceous. The lateral furrows on vertex

and the transverse one behind the ocelli deep; the lateral ones run into a deep

transverse suture over the antenne, and immediately behind a. projecting ridge, which

has a distinct border and is emarginate in the middle. A furrow surrounds the lower

ocellus behind ; the space below it is blistered. Clypeus rounded, shorter than the

labrum, which is semicircular ; the sides of the scutellum are smooth and shining, the

centre somewhat blistered, slightly hollow, and there is a depression at the apex which

is slightly emarginated. In front the metanotum is black. The yellowish band in the

wings extends from the commencement of the cubital nervure to the end of the stigma.

The third cubital cellule is small, not half the size of the second, and not much

longer than the first ; the first recurrent nervure is received nearly in the middle of the

second cellule; the second is nearly interstitial; the tratsverse median nervure is

received before the middle of the cellule. Behind, the middle tibie and tarsi are more

or less fuscous ; the posterior tibie are testaceous at the base.

2. Loboceras klugii. (Tab. I. fige. 1, 2; 1a, antenna: Tab. IV. figg. 3-3 a, 6,

trophi.)

Luteum, pilosum, antennis (basi excepta) abdominisque apice nigris, pedibus albidis, tarsis apice et tibiarum 4

posticorum dimidio apicali femoribusque posticis dimidio apicali nigris; alis flavescenti-hyalinis, apice

fumatis, costa et stigmate flavis. ,

Long. 10 millim.

Hab. Guatemata, San Gerénimo (Champion); Panama, Bugaba (Champion).

Antenne pilose, becoming gradually thickened towards the apex, but not forming a

club. The first joint is longer than the second; third one half longer than the

fourth, which is scarcely so long as the fifth; the three last subequal; the last joint

projects more above than on the lower side. The eyes reach to near the base of the

mandibles. The clypeus is truncated at the apex; labrum small, rounded at apex.

The mandible has a large apical tooth and two small blunt subapical ones ; the first at

the base of the apical tooth, the second close to the base of the mandible. Wings with

one radial cellule shortly appendiculated, and four cubital cellules; the first small,

the second longer than the third, and the fourth is longer than the three basal; the

second receives a recurrent nervure towards the apical third, the third one in the basal

third. The basal nervure is joined to the cubital; the transverse median is received

a little in front of the middle of the cellule; the frontal furrows are broad and shallow

and bound the frontal area, which is somewhat raised ; a furrow bounds the lower

ocellus behind. The extreme apex of the anterior tibie is blackish fuscous; the apical

half of the middle pair and more than half of the posterior one black. The apex of

the middle femora before and behind and the apical half of the posterior are also black ;

the femora are pallid testaceous at the base.

56 | HYMENOPTERA.

3. Loboceras saussuril.

Testaceum, pilosum, antennis (basi excepta), vertice, femoribus, tarsis abdominisque apice nigris ; coxis, tro-

chanteribus tibiisque albidis ; alis flavo-hyalinis, apice fumatis, costa nigra, stigmate testaceo.

Long. 8 millim.

Hab. Mexico, Orizaba (de Saussure).

The sutures on vertex are broad and deep, and there is a narrower one behind the

ocelli; the former run down the sides of the frontal area and unite round its lower

border, enclosing it completely, but at the angles of the area they are not so deep.

The clypeus is very slightly incised at the apex; the mandibles are piceous at the

apex. The first cubital cellule is small; the second is nearly double the length of the

third, which is only a little longer than the first ; the fourth is longer than the first.

three together. The curved first recurrent nervure is received close to the middle of -

the cellule; the second is interstitial, but it is more in the third cellule than in the

second; the transverse median nervure is received a little in front of the middle of the

cellule. The costa is black to near the commencement of the first cubital cellule; the

apical cloud in the wings commences at the end of the stigma, and it curves back to

the second transverse cubital nervure. The anterior femora are broadly white at the

base. On the vertex the entire space bounded by the vertical and frontal sutures is.

black.

This species appears to be very closely related to LZ. mexicanum; but that has no

black on the vertex. The costa is testaceous, like the stigma, and the tibie are:

testaceous.

4. Loboceras calear. (Tab. I. fig. 12.)

Cephalocera calcar, Norton, Trans. Amer. Ent. Soc. i. p. 51; Catal. p. 20 (¢)’.

Hab. Mexico}.

This species differs from the others in having the first cubital cellule longer

than the third, and in the transverse basal nervure being received quite close to the

transverse basal.

5. Loboceras mexicanum.

Loboceras mexicanum, Kirby, List of Hymen. i. p. 80, t. 6. f. 4°.

Hab. Mexico, Orizaba }.

6. Loboceras xanthostigma.

Testaceum, pilosum, antennis, capite (ore excepto), abdominis apice, tarsis tibiisque posterioribus nigris; alis

flavo-hyalinis, apice fusco, costa et stigmate flavis.

Long. 7-8 millim.

Hab. Panama, Bugaba (Champion).

The face below and a little above the antenne is pallid yellow ; the scape is more or

LOBOCERAS, 57

less testaceous; the last joint of the antenne is longer than the preceding; the third

cubital cellule is a little longer than broad; the second recurrent nervure is inter-

stitial. The blotch is large and white.

7. Loboceras fuscipenne. (Tab. I. fig. 6, 2 .)

Luteum, antennis, capite (ore excepto), abdominis apice, tarsis tibiisque nigris; alis fuscis, cellula secunda

cubitali puncto corneo oblongo, costa et stigmate nigris.

Long. 73-8 millim.

Hab. Panama, David (Champion).

The antenne are densely pilose, nearly as long as the abdomen, and become

thickened very gradually towards the apex; the last joints subequal. The face below

the antenne is pale testaceous; the clypeus is very slightly incised; the apex of the

mandibles piceous. The second cubital cellule is double the length of the third, which

isnot much longer than broad; the first recurrent nervure is received close to the

middle of the cellule; second close to the base of the third cellule; the transverse

median in front of middle of cellule. There is a distinct horny point in the costal and

second cubital cellules. Sometimes the second recurrent nervure is received in the

second cubital cellule. The anterior tibiee are fuscous behind ; the spurs are long and

sharp. The frontal sutures are deep and wide, the frontal area somewhat depressed in

the centre; the front bears scattered punctures. Sometimes there is a black longish

mark on the middle lobe of the mesonotum. The base of the antenne and the part

immediately above it testaceous. |

8. Loboceras nigriceps.

Luteum, pilosum, ovatum, antennis, capite (ore excepto), tegulis, abdominis apice, tibiis tarsisque nigris; alis

fuscis, costa nigra, stigmate fusco, nervo primo cubitali nullo.

Long. 5 millim.

Hab. Muxtco (Sallé).

The antenne are short, not much longer than the thorax, thick, tapering very slightly

towards the apex; the third joint is a little longer than the fourth; the last joint is

longer than the sixth, which is shorter than the fifth. The frontal sutures are almost

invisible; there is no frontal area, nor is there a furrow behind the lower ocellus.

The transverse median nervure is received immediately in front of the cellule, the

second recurrent in the same position. ‘The anterior tibie are faintly fuscous in front,

the four posterior are entirely black; the extreme apex only of the abdomen is black.

This species is readily known from Z. fuscipenne, which it resembles very closely

in coloration, by being smaller, by its more ovate body, by the first transverse cubital

nervure being absent, or at least scarcely to be distinguished, by the shorter spurs

(which are black and not half the length of metatarsus), by the second recurrent

nervure being received nearer the middle of the cellule, by the second (first) cellule

wanting the horny point, and by the black tegule.

BIOL. CENTR.-AMER., Hymenopt., September 1883. ; Il

“58 HYMENOPTERA.

ACORDULECERA.

Acordulecera, Say, Bost. Journ. i. 1835, p. 209.

1. Acordulecera dorsalis. | |

Acordulecera dorsalis, Say, Bost. Journ. i. 1835, p. 210; Norton, Trans. Amer. Ent. Soc. i. p. 49;

Cat. p. 19 (¢& 2)’.

Hab. NortaH AMERICA.—MeExico 1.

The genus Acordulecera does not apparently, judging from the description, differ

materially from Perantherizx. If this view be found correct, the latter name must be ©

dropped.

PERANTHERIX.

Perantheriz, Westwood, Thesaurus Entomologicus Oxoniensis, p. 107.

Only two species of this genus have been described, and both are from Brazil. The

genus is very closely allied to Loboceras, but is readily known from it by the antenne

having one joint less, only three cubital cellules, and by the second and third pair of

tibie being provided with spines, while only the middle pair has them with Loboceras.

The trophi are formed as in the last-named genus. The structure of the inner lobe of

the maxilla is quite different from any thing I have seen in any other genus of .the

Tenthredinide. It is reticulated in a peculiar manner, and the form of the reticulation

is different in the palpi of the two species I have examined. (See figures.)

1. Perantherix westwoodii. (Tab. III. figg. 12,9; 12a, mandible; 120, an-

tenna; 12¢, labrum; 12d, maxilla; 12¢, head; 12 f, top of maxilla, highly magnified.)

Lutea, antennis, capite, mesonoto, tibiarum apice tarsisque nigris; alis flavo-hyalinis, fascia substigmaticali

fumato, stigmate nigro, basi costaque flavis. ¢ 9.

Long. 6 millim. ,

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

The two basal joints of the antennz are subequal, not much longer than broad,

thicker than the other joints; third joint’ a little longer and thinner than the fourth,

which is a little longer than the fifth ; sixth longer than the fifth, thin and sharply conical

at the apex ; all the joints are thinner at the base than at the apex, and covered with long

sete, which are longest at the apex of the joints. On the head the frontal furrows are

very flat, the frontal one is not defined, but there is a large round fovea above the

antenne; the labrum, clypeus, and mandibles are yellow. ‘The mesonotum is punc-

tured, black, except the scutellum; the middle lobe reaches to the tegule; the furrows

shallow; there is no furrow in the centre. The calcaria are short and thick; the

tarsi are a little longer than the tibie.

PERANTHERIX., 59°

This species differs from P. bimaculata in having the mesonotum entirely black as-

well as the whole of the tarsi and the apex of the tibia. The frontal sutures are not

at all so well developed, while the large fovea above the antenne is absent in P. bima-

culata, which has furthermore the frontal area deep. The mouth only is testaceous.

The apex of the wing is hyaline, while in P: bémaculata the cloud extends to the

extreme apex; the greater part of the stigma is black; the cloud fills the cubital

and radial cellules, while in the other species the first cubital and base of radial are:

hyaline ; the transverse radial nervure is received nearer the base of the cellule; the.

spurs are much shorter. The antenne are shorter; the two basal joints are subequal,

which is not the case with P. dimaculata, the second being with it longer than the

first, besides being more cylindrical.

2. Perantherix bimaculata. (Tab. III. figg. 8,2; 84a, tarsus; 84, antenna;

8c, spurs; 8d, claws; 8¢, top of maxilla, highly magnified.)

Lutea, pilosa, antennis (basi excepta), capite (facie excepta), maculis 2 mesonoti abdominisque apice et latera-

libus basi nigris; pedibus pallide testaceis, tarsorum apice nigris; alis flavescenti-hyalinis, apice infumatis,

stigmate flavo ; costa nigra, apice flavo. 9.

Long. 8-9 millim.

Hab. GuateMALa, Panima (Champion).

Antenne 6-jointed, becoming slightly thickened towards the apex, densely covered

with bristle-like hairs; second joint double the length of first, which is scarcely

one fourth shorter than the third, which is the longest. The three following become

gradually shorter, the apical sharply pointed. Eyes very large and prominent, parallel,

projecting in front, and occupying the greater part of the head, reaching to the base.

of the mandibles. Clypeus truncated at the apex. Frontal furrows deep, broad, running:

down along the side of the eyes to opposite the antenne; frontal area shallow, longer:

than broad; the lower ocellus. bounded behind by a deep furrow, which. is sharply

pointed behind. Legs: four hinder tibie- with a longish sharply pointed spine on the:

outside, not far from the apex; four hinder spurs long and needle-like, one half of the

length of metatarsus ; inner spur on the anterior tibize thicker than the outer and cleft at

the apex. Metatarsus longer than all the other joints together; apical joints truncated

at the apex and without patella. The lobes of the mesonotum are not clearly indicated

by furrows, but in the centre of middle one is a deep furrow. ‘The scutellum is large,

oval at the apex, truncated behind, the apex projecting and separated from the postscu-

tellum by a deep furrow ; cenchri not distinguishable. There is no blotch, but the base of

the abdomen is depressed; the saw reaches to near the middle of theabdomen. Wings

with one radial and three cubital cellules; the first cubital is more than double the

length of the second, and receives a recurrent nervure close to the apical third; the

second cellule is longer than broad, and receives a recurrent nervure a little behind the

middle, where it is angled. . The, cubital nervure arises about three fourths of the

60 HYMENOPTERA.

length of the stigma from the base of the latter, and curves towards it, so that the

base is wider than the apex; the basal nervure is interstitial ; the transverse median

nervure is received a little in front of the middle of the cellule. The mesonotum is

finely shagreened; the head is yellow from below the ocelli; the cloud in the wings

extends from the apex of the stigma to the edge of the wing.

THULEA.

Thulea, Say, Bost. Journ. i. p. 213 (1835); Norton, Trans. Amer. Ent. Soc. i. p. 49.

1. Thulea nigra.

Thulea nigra, Say, Boston Journ. i. 1835, p. 213*; Norton, Trans. Amer. Ent. Soc. i. p. 49;

_ Catal. p. 19. 1.

Hab. Mexico 1,

I cannot make out, from the description, the precise affinities of this genus, and

place it provisionally here, as it must be related either to Perantherix or to the Cimbi-

cina. The antenne are 6-jointed; there are one radial and three cubital cellules, of

which the second and third receive each a recurrent nervure. No mention is made of

the presence of spines on the tibie, or if the lanceolate cellule is absent.

Subfam,. PERREYVINA.

Antenne 10-14-jointed, the joints moniliform or thickened towards the apex; in

male sometimes flabellate. Wings with one radial cellule, appendiculated, and four

cubital cellules. Lanceolate cellule petiolate. Hind wings with an appendicular

cellule. One discoidal cellule and no accessory nervure. Palpi short, thick. Maxil-

lary palpi 2—4-jointed, labial 1—3-jointed.

This group has usually been regarded as a section of the Lophyrina; but it differs

in so many points not only from that group, but from all others, that I am justified, I

think, in making a distinct section of it, and have given above the distinctive characters

of the subfamily.

I have not sufficient material at hand to enable me to form a definite idea as to the ~

genera; but, provisionally at least, 1 would arrange them as follows :—

A. Antenne 10-11-jointed. Labial palpi 1-jointed, maxillary 3-jointed . . Decameria.

B. Antenne more than 11-jointed.

1. The antennz more than 138-jointed, flabellate in the male. Maxillary

palpi 4-jointed, labial 3-jointed. Second recurrent cellule usually

receiving both recurrent nervures; appendicular cellule in hinder

wings verysmall . . . . . . . Lophyroides.

2. The antenne 13-jointed. Maxillary palpi ‘2-jointed, labial 1-jointed.

Second recurrent nervure usually receiving only one recurrent nervure ;

appendicular cellule in hind wings large . . ...... . . Perreyia.

LOPHYROIDES, 61

LOPHYROIDES.

_ Lophyroides, Cameron, Ent. M. Mag. xix. p. 132.

Brachytoma, Hartig, Blattw. und Holzwespen, p. 88; Westwood, Thesaurus Entomologicus

Oxoniensis, p. 109 (in part.) (1874).

The palpi in this genus are short, thick, and sparsely covered with longish bristle-

like hairs, the last being also the case with the maxilla; the labial palpi are 3-jointed,

the first joint is longer than the second and a very little shorter than the third, which

is brought to a blunt point in the middle at the apex. The maxillary palpi are

4-jointed ; the first is thicker than the second, and projects on the lower side ; the third

is a little longer than either the first or second; the fourth is a little longer than the

two preceding together, besides being thicker than them. The mandibles are stout,

rather blunt at the apex, and have no subapical tooth. The second cubital cellule usually

receives both recurrent nervures; but the second may be interstitial or nearly so. The

position of the second transverse cubital nervure is subject to irregularity; and this

will lead to a corresponding change in the relative position of the second recurrent

nervure ; the second tansverse cubital nervure is often absent. The appendicular cellule

in both wings is small. The calcaria are simple, broad, and do not much exceed one

third of the length of the metatarsus, which is a little shorter than the three following

joints ; the last is longer than the two preceding; the patelle are obsolete; the claws

long, curved, simple.

1. Lophyroides tropicus. (Tab. III. figg. 10, 3; 10a, maxilla; 104, labium ;

10 c¢, mandible; 10d, antenne of 2 .) |

Lophyrus tropicus, Norton, Trans. Amer. Ent. Soe. ii. p. 322; Catal. p. 176 (3)’.

Hab. Mexico (de Saussure!); Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

I believe the specimens from Chiriqui are correctly identified with Norton’s species.

The third cubital cellule is scarcely half the length of the second, and the third trans-

verse cubital nervure is often absent. The sutures on the vertex are very deep, as is also

the transverse furrow behind the ocelli and the longitudinal one in the centre of vertex.

A wide furrow runs from the ocelli to the antenne, becoming wider towards the apex.

In the male, however, the sutures on the vertex are less clearly marked, and the

central longitudinal one on the vertex is absent. The wings vary in the intensity of the

colour, and asa whole the males have them lighter in tint.

+ 2. Lophyroides anomalus.

~ Perreyia (?) anomala, Kirby, List of Hymen. i. p. 90. n. 3, t. 6. f. 14°.

Perreyia compta, Kirby (non Norton), J. c. p. 90 (note), t. 6. f. 13 (¢).

Hab. Mexico}.

This species seems scarcely to differ from L. tropicus.

62 HYMENOPTERA.

3. Lophyroides ruficollis. (Tab. III. figg. 11,3; lla, antenne of ¢.)

Niger, pronoto, mesonoto, mesopleuris tegulisque rufis; femoribus tibiisque anterioribus sordide testaceis ;

alis nigris, cellula cubitali secunda fere longiore quam tertia ; antennis 15-articulatis. ¢.

Long. 9 millim.

Hab. Panama, Volcan de Chiriqui (Champion).

The sutures on the vertex are wide, clearly limiting the vertex, which is raised

between them, and has a broad transverse furrow behind the ocelli, and a shallower

longitudinal one behind the transverse furrow in the middle; a furrow, wide but not

deep, runs from the lower ocellus to near the base of the antenne ; the front is raised,

and curves down between the antenne, ending in a (comparatively) sharp point close to

the middle of the antenne, from which it tapers to near the base of the clypeus. ‘The

apex of the clypeus is truncated; the labrum is piceous. ‘The wings and nervures are

deep black; the second cubital cellule is a little longer than the first, and still longer

than the third, which is almost square; the second recurrent nervure is received in front

of the third cubital. The joints of the antenne are fuscous. The scutellum is black ;

only the upper part of the pleure is red; the anterior tibice and femora are more or

less fuscous behind.

4. Lophyroides godmani.

Niger, pronoto, mesonoto, cum scutello, mesopleuris tegulisque rufis ; alis fuscis, cellula cubitali tertia longiore

quam secunda; antennis 14-articulatis. 9.

Long. 9 millim.

_ Hab. Guatemata, Las Mercedes 3000 feet (Champion).

The frontal sutures are flat and indistinct; the space behind the ocelli and between

the sutures is not raised or clearly defined, nor is there any transverse suture behind

the ocelli; the central antennal fovea is large, much longer than broad; the front

between the antenne and at the end of the fovea projects. The antenne are not much

longer than the head and thorax, pilose; the third joint much longer than the fourth

the last conical, and much narrower than the thirteenth. The second cubital cellule is

distinctly longer than the first, and shorter than the third by about one third; the

fourth is a little shorter than the second and third together. The wings are darker at

the base; the upper half only of the pleure is red.

Easily known from JL. ruficollis by the red scutellum, much longer third cubital

cellule, interstitial second recurrent nervure, and by the vertex not being separated

from the rest of the head by deep furrows. |

5. Lophyroides cordoviensis.

Lophyrus cordoviensis, Norton, Trans. Amer. Ent. Soe. ii. p. 823 ; Catal. p. 177 ( 3)’.

Hab. Mexico}.

PERREYIA. 63

PERREYIA.

Perreyia, Brullé, Hymén. iv. p. 661.

This genus differs.from Lophyroides in the antenne being only 13-jointed in both

sexes and simple in the males, in the appendicular cellules in both wings (but

more especially in the hinder pair) being much longer, in the second cellule receiving

only one recurrent nervure, and by the palpi having fewer joints, the labial palpus

being composed of only one large joint, as in Decameria, and the maxillary of only two

joints—a long basal and a shorter, thicker, and more rounded apical one.

1. Perreyia capitula. (Tab. III. fig. 7.)

Perreyia capitulum, Norton, Trans. Amer. Ent. Soc. i. p. 223; Catal. p. 223; ib. p. 85(¢&9)*.

Hab. Mexico }. . .

The antenne in this species are clearly 13-jointed, not 12 as stated by Norton. The

sutures on the vertex are moderately deep, and there is a small transverse one behind the

ocelli. A short, broad, and deep furrow runs from the ocelli down to the antennal

fovea, and it is bisected by a somewhat narrower transverse furrow before its termi-

nation. This central furrow is much wider, almost oblong, at the top in the male.

The recurrent nervures n the male are received nearer the transverse cubital nervures

than in the female. What Norton calls “a black spot on the apex of the abdomen” is

the genital armature, which is black in it and in P. compta.

2. Perreyia compta.

Perreyia compta, Norton, Trans. Amer. Ent. Soc. i. p. 823; Catal. p. 85(¢)'; Kirby, List of

Hymen. i. t. 6. f. 15°.

Hab. Mexico}.

The sutures on the vertex are distinct; the frontal area is depressed, leading into a

short and wide furrow, which reaches close to the antenne. The antenne are long,

thick, become thickened towards the apex, and are covered with a close pile; the

third joint double the length of the fourth; the joints produced a little at the apex ;

the third and fourth thinner than the succeeding, the apex not attenuated ; the last

two about equal in length. Wings deep violaceous throughout ; first cubital cellule a

very little shorter than the second, which is not half the length of the third; second

recurrent nervure interstitial.

The neuration of the wings is very irregular, and specimens with five cubital cellules

are not uncommon. It is a larger insect than P. championi; the antenne are longer,

thicker, and distinctly pilose, and with the third joint distinctly double the length of

the fourth, while the joints increase in thickness towards the apex, the reverse being

the case with P. championi. It also differs from the latter in having the genital arma-

ture black. |

64 HYMENOPTERA.

Kirby (List of Hymen. i. p. 90) doubts if Norton had described a male, as he says

he did; but Norton is quite correct in this, and, judging by Kirby’s figure of the so-

called female, I should say it is a male. What Kirby (/. ¢.) describes and figures

(t. 6. fig. 13) as the male of P. compta is a Lophyroides allied to L. ruficollis.

3. Perreyia championi. (Tab. IV. fig. 6, maxillary palpus.)

Nigra, ore testaceo, abdomine flavo-rufo; alis fusco-violaceis, cellula cubitali tertia paullo breviore quam

secunda.

é. Long. 7-8 millim.

Hab. GuateMaua, Purula (Champion).

The antenne are stout, very slightly tapering towards the apex; the joints slightly

produced at the apex, the third one half longer than the fourth; at the sides the

joints are piceous. The vertex is raised, bounded on the sides by the vertical furrows,

and immediately above the antenne by a transverse furrow; a short but wide furrow

issues from near the lower ocellus. The space between the antenne, labrum, clypeus,

and mandibles is testaceous. The second cubital cellule is longer than the first and

third; the third itself is longer than the first; the second recurrent nervure is received

a little behind the second transverse cubital and in the third cubital cellule. |

DECAMERIA.

Decameria, St.-Fargeau, Enc. Méth. x. p. 371 (1825).

Dictynna, Brullé, Hymén. iv. p. 662; Norton, non Westwood.

Camptobrium, Spinola, Ann. Soc. Ent. Fr. ix. p. 184.

Acherdocerus, Kirby, List of Hymen. i. p. 92.

I am not quite sure as to Camptobrium being identical with Decameria or congeneric

with any of the insects I have described here. They agree closely with Spinola’s

description and figure, save that he says the palpi are long, filiform, and 4—6-jointed,

which is certainly not the case with any of the insects of this group known to me.

My impression is that Spinola has made a mistake in his description of the palpi, but

that can only be verified by an examination of his type specimen. Under these cir-

cumstances I have not adopted Spinola’s name. It is necessary to explain that the

typical Decameria has only ten joints in the antenne; but I have not, on this account,

separated it from the species with eleven joints (that being the number with Campto-

brium), because I do not regard, in this case, the number of joints of generic value,

as the difference in the number of joints is not accompanied by other differences.

1. Decameria nigriceps.

Camptobrium (?) nigriceps, Kirby, List of Hymen. i. p. 92, t. 6. f. 187.

Hab. Mexico, Orizaba’.

DECAMERIA. 65

2. Decameria rufiventris.

Nigra, subviolacea, abdomine flavo-rufo; alis fuliginosis, cellula cubitali tertia duplo longiore quam secunda.

¢ abdomine supra nigro; alis cellula cubitali tertia haud duplo longiore quam secunda.

Long. 10 millim.

Hab. Costa Rica, Irazu, 6000 to 7000 feet (Rogers).

The head is nearly on a line with the eyes behind. The sutures on the vertex

are deep and broad, and go down to near the antenne; there is a distinct trans-

verse furrow behind the ocelli and a longitudinal one in the centre of the vertex;

the frontal area is deeply sunk, the depression extending from the ocelli to the

antenne. The antenne are not much longer than the head and thorax, and shorter

than the abdomen, slightly pilose; the third joint more than double the length of the

fourth. The second cubital cellule is a little longer than the first, and has a large

horny point beyond the middle, and is curved down where the recurrent nervure is

received at the apical third. The third cellule is more than double the length of

the second; the recurrent nervure is received close to the second transverse cubital

nervure, which is not received in an acute angle; the basal nervure is interstitial, is

straight, and not parallel with the first recurrent, which curves towards the base of

the wing much more than the second recurrent; the transverse median nervure

is short, and is received in an acute angle formed by the costal nervure; the median

cellule is five-angled. The stigma is long; the appendicular cellule large; costa

thickened. The spines are short, thick, broad; the patelle are present, although

small; the spurs simple. The anterior tarsi are very much longer than the tibie ;

the posterior scarcely so lengthened.

The male has the abdomen entirely black above; the sutures on the vertex are

scarcely so deep, but the transverse and longitudinal furrows are present; the third

cubital cellule is shorter, not being double the length of the second, and the third

joint of the antenne is shorter in proportion to the fourth.

3. Decameria nigriventris, (Tab. III. figg. 9,2; 9a, antenna.)

Nigra; capite, prothorace, mesothorace tegulisque rufo-testaceis ; alis fuliginosis, cellula cubitali tertia duplo

longiore quam secunda.

Long. 8—9 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

The antennz are sparsely pilose; the third joint scarcely double the length of fourth,

the last longer than preceding, and, if any thing, longer than the fourth. The third

cubital cellule is double the length of second. The anterior coxe and knees are pale red.

This species is smaller than D. rufiventris. The head is narrower, and retreats

considerably behind the eyes; the frontal area is not altogether hollowed, there being

only a furrow proceeding from the ocellus; the thrid joint of the antenne is shorter ;

the second cubital cellule is narrower, the third longer and consequently the fourth is

shorter.

BIOL. CENTR.-AMER., Hymenopt., December 1883. ; KK

66 _ HYMENOPTERA.

4. Decameria varipes.

Nigra; pronoto, mesonoto, lateralibus tegulis, ore, facie orbitaque exteriore lete rufis ; coxis trochanteribusque

albidis ; alis fumatis, cellula cubitali tertia fere longiore quam secunda; antennis 11-articulatis.

Long. 5 millim.

Hab. GuateMaua, Cerro Zunil 4000 to 5000 feet (Champion).

The third joint of the antenne (which are longer than the abdomen) is nearly double

the length of the fourth; the second cubital cellule is a very little shorter than the

third; the second recurrent nervure is received a little beyond the second transverse

cubital. The head is small, narrowed behind; the eyes project in front, so that the

face retreats considerably. The greater part of the middle lobe of the mesonotum,

the sides of metanotum, and the pleure immediately below the wings are red; the

basal half of the anterior femora is white ; the abdomen is obscure fuscous across the

segments above.

5. Decameria cordoviensis.

Dictynna cordoviensis, Norton, Trans. Amer. Ent. Soc. iv. p. 81'; Cresson, loc. cit. viii. p. 38.

Hab. Mexico, Cordova 1.

6. Decameria polita.

Dictynna polita, Norton, Trans. Amer. Ent. Soc. iv. p. 81°; Cresson, loc. cit. viii. p. 38.

Hab. Mexico 1, Cordova.

7. Decameria fumipennis. .

Acherdocerus fumipennis, Kirby, List of Hymen. 1. p. 92. t. 7. f. 1%.

Hab. Mexico}.

Kirby describes the antenne as 9-jointed ; but both in the figure and in the enlarged

drawing of the antenne they are represented as distinctly 10-jointed ; and Mr. Kirby

tells me that on a re-examination of his type he finds that this is the real number.

8. Decameria facialis.

Nigra; thorace, facie, coxis trochanteribusque rufis; antennis 10-articulatis ; alis fumatis.

Long. 6-7 millim.

Hab. Guatemata, Tamahu (Champion).

The sutures on vertex are deep, and there is a transverse furrow bounding the vertex

above the antenne, but there is no longitudinal frontal furrow ; the vertex is depressed

in the centre behind the ocelli. The antenne are thick; the third joint is scarcely

one quarter longer than the fourth; the last is longer than the ninth. The second

transverse cubital nervure is absent.

PAMPHILIUS.—CEPHUS. 67

The joints of the antenne are thicker than in D. nigriventris, and they are not so

distinctly attenuated at the base, which is but slightly thinner than the apex; the third

joint is shorter in comparison with the following, and the fourth cubital cellule is

shorter.

Subfam. LY DINA.

PAMPHILIUS.

Pamphilius, Latreille, Hist. Nat. Crust. Ins. i. p. 303 (1802).

Lyda, Fabr., Syst. Piez. p. 43 (1804).

This genus is characteristic of the temperate regions, and is almost if not quite

absent from the tropics. Fifty-nine species have been described from Europe, Japan,

and North China, and fifty-four are known from America north of Mexico. Only two

species are known from Central America and none from the Ethiopian Region.

1. Pamphilius variegatus.

Lyda variegata, Norton, Trans. Amer. Ent. Soc. ii. p. 3385; Catal. p. 189, go’.

Hab. Mexico }.

2. Pamphilius creditus.

Lyda credita, Norton, Trans. Amer. Ent. Soe. ii. p. 384; Catal. p. 188, ¢°.

Hab. Mexico 1.

Fam. CEPHID.

CEPHUS.

Cephus, Latreille, Hist. Nat. Crust. Ins. ii. p. 303 (1802).

This genus is numerously represented in the Palearctic and Nearctic Regions, but

is absent apparently elsewhere, except from Mexico and Japan.

1. Cephus (?) mexicanus.

Cephus mexicanus, Guérin, Icon. Reg. Anim. iii. p.403; Norton, Trans. Amer. Ent. Soc. u1. p. 844;

Catal. p. 198, 9’.

Hab. Mexico }.

The antenne of C. mewicanus are described as 7-jointed, which may be an error for

17-jointed.

68 HYMENOPTERA.

Fam. SIRICIDA.

Subfam. SZRICIN A.

STREX.

Sirex, Linneus, Faun. Suec. p. 896 (1761); Klug, Mon. Sir. Germ. p. 19 (1808).

Urocerus, Geoffroy, Ins. Par. 11. p. 264 (1762). .

This well-known genus is numerously represented in the Palearctic and Nearctic

Regions, and species are also known from China, India, and Australia; but no species

have hitherto been recorded from South America, or from the Ethiopian Region.

1. Sirex flavicornis.

Sirex flavicornis, Fabr. Spec. Ins. i. p. 418. 4 (1781).

Hab. Norta America; Mexico.

There is a specimen of this species in the Hope Museum, Oxford, with the locality

“Mexico.” It is common in North America. |

2. Sirex fulvus.

Urocerus fulvus, Cresson, Trans. Amer. Ent. Soc. viii. p. 35 (1880) *; Kirby, List of Hymen. i.

p. 879°.

Hab. Norra Americal, Western States —MExIco ?.

Subfam. XJPHY DRINA.

DERECYRTA.

Derecyrta, Smith, Ann. Nat. Hist. (ser. 3) vi. p. 255 (1860); Westwood, Thes. Ent. Oxon. p. 121

(1874). |

This genus is exclusively Neotropical, and only four species have hitherto been

described. It differs from Xiphydria merely in having only one radial cellule, and in

having the ovipositor somewhat shorter; but this last point can scarcely be regarded

as of generic value. The maxilla is constructed asin the Tenthredinide ; the palpi

are 5-jointed ; joints one and three are the shortest, and nearly equal in length ; joint two

is the longest, and the fifth is a little longer than the fourth. The labium is apparently

entire; the palpi have three joints. The basal is longer than the second, and both are

much thinner than the third, which is more than double their thickness, and as long

as the first.

1. Derecyrta rugifrons. (Tab. III. fig. 13.)

Nigra, alis fere hyalinis, apice lenissime fumatis; facie mesonotoque punctulatis; alis cellula cubitali

secunda longiore quam tertia.

Long. 17-18 millim.

Hab. Costa Rica, Irazu, 6000 to 7000 feet (Rogers).

DERECYRTA.—ORYSSUS. 69

The head behind the ocelli is smooth and shining, below semiopaque, snagreened ;

front projecting, depressed in the centre. Mesonotum rugose, the lateral lobes in front

finely punctured, half shining. Scutellum finely punctured ; at its apex it rises into a

sharp but not high peak, which is more perpendicular behind than before. The abdo-

men is shining, very finely punctured ; the basal segment is smooth, impunctate, but

' with the edges all round more coarsely punctured than any other part. The transverse

basal nervure is received a little before the middle of the first cubital cellule and

slightly curved; the first recurrent is also curved, but the opposite way, and is received

not far from the first transverse cubital; the second recurrent nervure is received quite

close to the second transverse cubital; the third cubital cellule is wider than second

and longer than fourth. The antenne are much shorter than abdomen, are rather

stout, and 23-jointed.

Allied to D. lugubris, Westw., from Brazil, but differing in neuration and punctuation.

Fam. ORYSSIDE.

ORYSSUS.

-Oryssus, Latreille, Précis, p. 111 (1796) ; Fabr. Ent. Syst. Suppl. p. 218 (1798).

Fifteen species of this genus are known. Species are found in Europe, Abyssinia,

Natal, the Gold Coast, and Aru; four have been recorded from North America, three

from Brazil, and one from Chili.

1. Oryssus mexicanus.

Oryssus mexicanus, Cresson, Proc. Amer. Ent. Soc. 1879, x.; Trans. viii. p. 48, 2°.

Hab. Mexico}.

2. Oryssus nigricans. | (Tab. III. figg. 14; 144, spur on anterior leg; 146,

antenna. ) -

Niger, breviter pubescens, punctulatus, trochanteribus tarsisque anticis testaceis ; alis fumatis, albo maculatis.

Long. 5 millim.

Hab. GuateMata, Pantaleon 1700 feet ( Champion).

The third joint of the antenne is double the length of the fourth; the last is as

long and much thicker than the two preceding. ‘The head and thorax are coarsely

punctured ; the punctures on scutellum are wider apart; the puncturing on the abdo-

men is much finer and closer ; the segmental divisions are shining, impunctate. On

the inner side of the eyes are three large (comparatively) tubercles, and down the lower

part of the head in front is an ill-defined furrow; the base of stigma is white, and

from this white part runs a pear-shaped fascia to the bottom of the wing, this fascia

ry tac

70 | HYMENOPTERA.

being widest at the top; the lower half of the wing to the middle fascia and the apex

are milk-white. The posterior wings are almost hyaline, the upperside at apex only

being smoky. |

PETIOLIVENTRIA.

DITROCHA (TEREBRANTIA).

Fam. CYNIPIDA.

Subfam. GALLICOLINA.

CYNIPS sensu lat.

The three species of gall-making Cynipide which inhabit Central America are only

known from their galls, so that it is impossible to say to what genus the makers

of these belong; and although Dr. Karsh describes the upheaver of the gall he

records from Mexico, I cannot, from his description, refer the species described by him

with precision to any of the modern genera.

1. Cynips setifer.

Diplolepis setifer, Karsch, Zeitschr. f. d. ges. Naturw. liii. p. 291, t. vi. f. 2-2a-d’.

Hab. Mexico}.

2. Cynips championi.

The gall is broader than long, having a breadth of about 24 inches and a

length of 2 inches, the surface irregularly indented, of a leathery texture, and so

hard that it can be cut only with difficulty; the inside is also hard and is of a close

compact spongy nature. Its colour closely resembles that of the twigs. Intersected

through it at irregular intervals are oval cells about 14 millim. in length. The outer

margin of the cells is hard, woody, and white. Besides the numerous exit-holes of the

gall-flies there was a larger one which, at a short distance from the outer skin, bifurcated

into two tunnels; these were filled with “ frass,” and in one of them was found a silken

case, white and smooth internally, but covered with “ frass” on the outside, clearly the

case of some Microlepidopteron. The gall is situated at the end of a twig about 3

millim. in diameter. It is said by Mr. Champion to be common in Chiriqui ona

species of oak. The maker is unknown to me.

3. Cynips imitator. (Tab. IV. fig. 8, gall.)

Hab. GuatemaLa, San Geronimo (Champion).

The largest galls have a diameter of 26 millim. In form they are more or less ©

roundish, but, if any thing, longer than broad; they are situated on a twig or small

CYNIPS. 71

branch, which they surround about equally on all sides. The galls proper originate

from the twig; they are woody in texture, much longer than broad, being more than

4 millim. long and only about 1 millim. broad ; they stand out from either side of the

twig; each is covered by a mass of white, soft, woolly hair, which may be 10 millim.

long. As the galls are closely pressed together they form, from the length and thick-

ness of the woolly covering, a large ball-like mass of white wool, which must be a

conspicuous object on the twig, and from being delicately tinted with pink must be

very pretty. All the specimens I have were pulled when very young, and hence it is

impossible to make out any thing of the structure of the inner galls.

The gall is very like that of Cynips seminator, Fitch, and may, indeed, be made by

that species.

4. Cynips guatemalensis. (Tab. IV. figg. 7, 7a, gall.)

Hab. Guaremata, San Gerénimo (Champion).

The gall is found on the lower side of the leaves of an Ilex oak. It is placed on the

mid-rib, usually towards the centre of leaf ; it is flat on the lower side, but dome-shaped

above, and is wider than high. The centre is hard and woody, and the fibres radiate

from the centre towards the edge; the larval chambers are situated along the edge,

there being none in the centre. Outside the woody central gall is a covering of woolly

hairs, white internally, but reddish brown on the outer side. An average-sized gall

measures for the gall proper 7 lines in breadth and 5 lines in height, while the woolly

outer covering is nearly 3 lines. The galls are usually in pairs; but single specimens

are also found, and in one instance there were four specimens on a single leaf; these

were much smaller than usual.

Dr. Karsch * describes three galls on oak (Quercus benthami, Dec.) from Mexico

which are in all probability formed by species of Cynipide, but no names are given to

them, namely :—

1. A round gall on the leaf-stalk close to leaf, dark red externally and velvet-like in

texture. The thin-walled shell encloses an inner gall in the centre, and from this

inner gall fibres radiate to the circumference, thus keeping it in position. It has a

diameter of 26 cm. (/. ¢. t. vii. f. 13). |

2. Asmall, smooth, shining, yellowish, roundish gall of 14 millim. diameter on the leaf.

3. A gall like the first, but larger, being 4 cm. in diameter and outwardly smooth,

yellowish and warty in texture (J. ¢. t. vil. f. 14 a-c).

Subfam. JNQUILINA.

This group consists of the species which lay their eggs in the galls raised by other

Cynipide, and live in them at the expense of the legitimate owner. They are vegetable

* J. cp. 303.

72 HYMENOPTERA.

feeders and often distort the galls which they inhabit. From their habits they have

been called ** Cuckoo-flies.”

SYNERGUS.

Synergus, Hartig, Germ. Zeits. ii. 1840, p. 186; Foerster, Verh. zool.-bot. Wien, 1869, p. 332.

1. Synergus filicornis. (Tab. IV. fig. 10 2; 10a, antenna.)

Rufo-testaceus; antennis (basi excepto), vertice, pleuris, metathorace abdominisque dorso nigris ; pedibus flavo-

albidis, tarsis posticis nigris ; alis hyalinis, nervis testaceis.

Long. fere 3 millim.

Hab. Guatemata, San Gerénimo (Champion).

The vertex is shagreened, shining; the face when looked at with a strong glass has

a matted appearance as if it were covered with fine hair; the pronotum and mesonotum

closely punctured longitudinally ; pleure transversely striated, shining in the centre,

more opaque at the sides; the abdomen is smooth and shining; the apex finely

shagreened ; ovipositor black.

2. Synergus dorsalis.

Rufo-testaceus ; macula mesonoti, metathorace, pectore abdominisque dorso nigris ; pedibus flavo-albidis ; alis

hyalinis, nervis testaceis.

Long. 4 millim.

Hab. Guatemaua, San Gerdénimo (Champion).

The head and thorax are finely rugose; the pleure striated; abdomen finely

shagreened ; ovipositor black; the third joint of the antenne is a little longer than

the fourth; the fourth, fifth, and sixth are subequal; the rest are wanting. In most

of the specimens the space enclosing the ocelli and the part behind it, a broad stripe

on mesonotum, and the basal half of scutellum are black.

Differs from 8S. filicornis in having black on the mesonotum, the thorax more

strongly punctured, abdomen shorter and not so much compressed, it being not much

longer than thorax ; wings shorter, and the hind tarsi are not black. In the male the

thorax and abdomen are entirely black, as well as the greater portion of the sides

of the latter. |

All my specimens were cut out of the galls of Cynips guatemalensis.

Subfam. PARASITIC.

EUCOILIDA.

The species of this group are easily recognized by the cup-shaped hollow on the top

of the scutellum.

The European species have been distributed among a large number of genera by

COTHONASPIS.—BALNA. 73

Foerster, many of them being founded on very slight characters. The species are very

numerous in the northern parts of Europe (where alone they have been properly

studied); but few have been recorded from America, and none hitherto from South or

Central America. |

COTHONASPIS.

Cothonaspis, Hartig, Germ. Zeits. Ent. i. p. 201; Foerster, Verh. pr. Rheinl. 1869, p. 347.

No species of this genus have been previously recorded from America.

1. Cothonaspis allotriiformis.

Rufa, pedibus flavis, vertice leta, mesonoto antennarumque apice nigro-piceis ; antennis corporis fere longitu-

dine, clava 5-articulata, articulo tertio longiore quam quartus, scutelli fovea sat magna, ovata; alis hyalinis,

longe ciliatis, cellula radiali elongata.

Long. 1-2 millim.

Hab. Mexico, Cordova (Sallé).

The antenne are nearly as long as the body; the third joint is longer than the

fourth; the five apical form a club; they are covered sparsely with microscopic hairs.

The cup on the scutellum is not so hollow as in the typical species of the genus; the

wings are covered at the apex with long hair; the radial cellule is closed.

Fam. FIGITID.

The Figitide of the older authors have been split up into three groups—the Ana-

charina, Onychiina, and Figitina. No species of the first have been recorded from our

district, but one of the genera here described is intermediate between it and the second.

If these divisions are to be accepted, Leiopteron would require one for itself; but we

know so little about the American species that any attempt at their classification must

be regarded with distrust at present.

BALNA.

Antenne 13-jointed, filiform ; the joints of the flagellum longer than broad; the

third joint longer than the fourth; the rest becoming gradually shorter, but scarcely

thicker towards the apex. Cheeks and temples margined. Prothorax with the

margin distinctly ridged. Mesonotum with two wide and deep sutures, the centre

raised into a blunt ridge a little before the middle. A single fovea in front of scutel-

lum, which is produced at the apex into a blunt, short, thick spine. Thorax smooth,

shining, impunctate. Radial cellule longer than wide, closed before and behind and

without a bounding nervure along the costa. Cubital nervure obsolete.

This genus comes nearest to Aspicera, Dbm., but differs in having the thorax smooth,

shining, the scutellum not produced into a long, sharp spine, and with only a single

fovea at the base, while the radial cellule is completely closed before and behind.

BIOL. CENTR.-AMER., Hymenopt., December 1883. LL

74 HYMENOPTERA.

1. Balna nigriceps.

Rufa; capite, scapo antennarum abdomineque nigris, alis hyalinis.

Long. 3-4 millim.

- |

Hab. Guatemata, Volcan de Atilan 2500 to 3000 feet (Champion).

The antennz are as long as the body, filiform, becoming very slightly thicker towards

the apex; third joint a very little longer than the fourth, the rest to the penultimate

becoming gradually shorter, the last one half longer than the twelfth ; the first double

the length of the second, which is broader than long. Vertex raised, its centre hollow.

Head broad behind the eyes, where there is a suture. Prothorax ridged, the ridge

scarcely sloping towards the coxe, with a very slight slope in front, and ending in the

centre in a small blunt tubercle. Lateral suture on mesonotum deep, ending at the

prothoracic ridge, middle suture short. In the middle of the mesonotum isa blunt,

comparatively large, tubercle. A ridge separates the scutellum from mesonotum ; it

has one large hollow at the base, and has a sharp blunt ridge in the centre; it is hollow

on either side of this and ends in a short, blunt spine, but the ridge is depressed before

ending in the spine. The pleure are smooth, impunctate. The metanotum is thickly

covered with white hair.

NERALSIA.

Antenne 13-jointed, thick, increasing in thickness towards the apex; first joint

double the length of second, which is ovate; third longer than fourth; the sixth to

the penultimate thicker than preceding, a little longer than broad, rounded at base

and apex, striated; last nearly double the length of twelfth. Eyes bare, margined.

Ocelli in a triangle. Pronotum margined, very nearly perpendicular in front. Meso-

notum smooth, shining, with two sutures; scutellum with two large fovee at the base,

prolonged into a moderately long spine at the apex. Petiole striated. Radial cellule

not much longer than broad, completely closed all round. Cubital nervure incomplete,

apex of wing ciliated. Mandibles stout, not much longer than broad, with three short

blunt teeth. Maxillary palpi 4-jointed.

This genus is intermediate between the Onychiina and the Figitina. It agrees

with the former group in the structure of the thorax and abdomen, with the latter in

the form of the antenne. The almost moniliform joints of the latter distinguish it

from any of the known genera of Anacharina.

1. Neralsia rufipes. (Tab. IV. fige.9 9; 9a, antenna; b, scutellum; c, ovipositor. )

Nigra, abdominis basi pedibusque rufis; alis hyalinis, medio fusco-maculatis.

Long. 3-4.

Hab. GuateMaLa, Pantaleon 1700 feet (Champion).

The antennz are as long as the abdomen and half the thorax, slightly pilose, the

hairs long and scattered; basal joint three times as long as the second, thickened

NERALSIA.—LEIOPTERON. 75

towards the apex ; the second is not much longer than broad, globular; third one half

longer than fourth; the third, fourth, and fifth somewhat cylindrical; the rest to the

penultimate thicker and shorter in proportion to the breadth, and becoming gradually

shorter ; last conical at apex, nearly double the length of the twelfth. The head has

a few scattered hairs. Vertex thick, raised, rugose-punctured; a furrow goes down

the side outside the ocelli; the antenne originate from tubercles. Prothorax large,

smooth, shining ; a distinct ridge goes down from the top, and divides the front portion

(which slopes down from the ridge) from the larger posterior part, and a few rough

ridges run from it laterally on the upperside, from the mesonotum. The lateral sutures

on the mesonotum are wide and deep, but become obsolete towards the prothorax;

there is a short central one which is one half longer than wide; its base is sharply

pointed; the apex truncated. Close to the base of scutellum is a distinct, transverse

ridge from which the mesothoracic sutures originate; on the other sides of this ridge

are the two large, oval, deep scutellar fovee. The scutellum rises gradually from the

foveee with a slope; the centre is hollow, the hollow being longer than broad ; on each

side of this central depression is a smaller and much narrower hollow; the scutellum

ends in a short, stout spine, which projects backwards. The metanotum has a large

hollow field in the centre ; it is longer than broad in the centre, and is surrounded by

a straight channel behind and by a blunt ridge at the sides. Abdomen shortér than

the thorax; pedicel short, raised, channelled, the edge margined; second segment

scarcely half the length of the third, produced into a tongue-like process above; the

third segment is a little longer than the fourth and following segments together.

Radial cellule wider than long. Posterior tibie and metatarsi thick ; spurs nearly one

quarter of the length of the latter.

LEIOPTERON.

Leiopteron, Perty, Delect. Am. Art. (1830).

This genus is exclusively Neotropical. Eight species have been described from

Brazil.

1. Leiopteron westwoodii. (Tab. IV? fig. 12,9; 12a, antenna.)

Rufum ; capite thoraceque sat longe albido-villosis; antennis (apice excepto), abdomine pedibusque posticis

nigris, tarsis posticis rufo-testaceis ; alis hyalinis, macula magna ad apicem fumata.

Long. 6 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

The antenne are distinctly clavate; the third joint is shorter than the fourth. The

head and thorax coarsely rugose; mesopleura smooth, almost impunctate, the upper

part depressed and separated from the lower by a curved groove; this upper part is

finely punctured ; sternum coarsely punctured. The anterior coxe, trochanters, and the

| LL 2

76 HYMENOPTERA.

pectus are more or less black; the metathorax is also black behind. Abdomen smooth

and shining; the apex covered with long white hairs; the fascia in fore wings com-

mences close to the end of the radial cellule, and is a little longer than it.

Fam. CHALCIDIDZ.

This family contains an immense horde of minute parasitic species, the study of

which is attended with great difficulties. The European forms have been divided into

a large number of genera, the characters of which do not appear to apply to exotic

species, and many of which, moreover, have been grounded on single species—as often

as not, known only from one sex. The definitions furthermore given by Foerster

and Thomson for many of the higher groups are, in the majority of cases, equally

inapplicable to exotic forms. These, then, would require to have new divisions created

for them, or the older ones would need have their limits enlarged and revised. My

material, however, is so limited that I have not attempted to do this, and I have avoided

as much as possible the creation of new genera.

. Subfam. LEUCOSPIDINA..

This group is a very distinct one, being readily distinguished by having the wings

folded as in the Vespide, and by the ovipositor being turned over the back of the

abdomen.

LEUCOSPIS.

Leucospis, Fabricius, Syst. Ent. ii. p. 245 ; Westwood, Germ. Zeits. Ent. i. p. 235.

This well-known genus is found in the Palearctic Region, North and South Africa,

the East Indies, North America, Brazil and Chili, New Caledonia, &c.

The species are parasites in the nests of bees and wasps.

1. Leucospis bulbiventris.

Leucospis bulbiventris, Cresson, Tr. Am. Ent. Soc. iv. p. 297.

Hab. Mexico 1.

2. Leucospis apicalis.

Leucospis apicalis, Cresson, Tr. Am. Ent. Soc. iv. p. 80°.

Hab. Mexico 1.

3. Leucospis mexicana. (Tab. IV. figg. 11,2; 11a, maxilla; 113, labium;

11 c, mandible.)

Leucospis mexicana, Walker, Journ. of Ent. i. p. 20, 9*; Cresson, Tr. Am. Ent. Soc. iv. p. 30.

Hab. Mexico'!; Nicaragua, Chontales (Belt); Panama (Boucard).

LEUCOSPIS. 17

I am not quite sure that the specimens from Nicaragua and Panama are to be referred

to L. mexicana, for they differ from the descriptions of the latter in having the abdomen

not “strongly metallic green at the apex,” and the anterior femora are lined beneath

with yellow; otherwise they agree closely enough with Walker’s and Cresson’s

descriptions.

4. Leucospis sumichrasti.

Leucospis sumichrasti, Cresson, Trans. Am. Ent. Soc. iv. p. 30°.

Hab. Mexico},

-§. Leucospis klugii.

Leucospis klugii, Westwood, Germ. Zeits. Ent. i. p. 249, pl. 3. f. 1, $°; Cresson, Tr. Am. Ent.

Soe. iv. p. 35°.

Hab. Mexico }.

6. Leucospis azteca.

Leucospis azteca, Cresson, Trans. Am. Ent. Soc. iv. p. 33°.

Hab. Mexico}.

7. Leucospis dubiosa.

Leucospis dubiosa, Cresson, Trans. Am. Ent. Soc. iv. p. 34’.

Hab. Mexico}.

Cresson thinks this may prove to be a variety of L. azteca, from which it differs but

little.

8. Leucospis tolteca.

Leucospis tolteca, Cresson, Trans. Am. Ent. Soc. iv. p. 34’.

Hab. Mexico !.

Subfam. CHALCIDINA.

According to European writers the species pertaining to this subfamily are to be

known by having the posterior femora enlarged and serrated or toothed on the under-

side, and the body not metallic. ‘These characters are sufficient for European species,

but scarcely so for exotic; for many species allied to Cleonymus and Torymus have

similarly constructed femora. The species of Smicra and Chalcis (which are the typical

genera of the group) are commonest of all the exotic Chalcids.

78 HYMENOPTERA.

SMICRA.

Smicra, Spinola, Ann. Mus. xvii. p. 147.

Spilochalcis, Thoms. Hymen. Scand. iv. p. 18.

Conura, Sichel, Ann. Soc. Ent. Fr. (4) v. p. 348, 1865 (ex parte).

Chalcis, Westwood, Intr. to Class. Ins. ii. Appendix, p. 65.

This is one of the best-known and most widely distributed of the genera of Chalci-

didz. Species have been discovered in almost all parts of the world; but they appear

to be especially abundant in Central and South America. The generic characters

appear to lie in the antenne being inserted in the middle of the face, and in the

abdomen having a more or less elongated peduncle—the former character separating

it from Epitranus and Chalcitella, which have a longish petiole ;. and the latter from

Chalcis and Halcitella. Conura (in part) differs merely from it in the apical abdominal

segments being prolonged into a “tail” as in Phasgonophora. 1am very doubtful if

this latter character is a generic one; the length of the “ tail” depends upon the habits

of the insects, having reference (as in Torymus) to the situation in which the prey of

the Chaicis is hidden: if it is easily reached, the ovipositor is short; if more out of the

parasite’s reach, it is lengthened in correspondence. I find, furthermore, that so many

gradations occur, say between an ovipositor of the length of that of Phasgonophora

thoracica and an ordinary Smicra, that it is impossible to draw a line between them ;

and the difficulty of separating the genera in this group is increased by the fact that

the length of the petiole also varies, so that thus the line of demarcation between

Smicra and Chalcis is not always easily fixed.

C. G. Thomson (J. ¢.) has divided the Smicra of authors into two genera—Smicra

(having for type the Sphewx sispes, Linn.), distinguished by the thorax being entirely

black, and the middle tibie without spurs; and Spilochalcis, with the thorax more

or less marked with yellow, and the middle tibie with spurs. According to this

definition, all the Central-American species known to me must be referred to Spilo-

chalcis; but in the mean time I prefer to retain the older denomination.

The species show considerable variation in structure, especially of the femora and

metathorax. The latter is usually divided by reticulations into more or less well-

defined fields, the form of which may afford good specific characters, as they do in the

Ichneumonide; but I am unable to say if their shape is constant in the same species,

not having long series of any of them.

A. Femoral teeth large, blunt, 4 to 8 in number. (Species 1-10.)

1. Smicra mexicana.

Smicra mexicana, Cresson, Trans. Am. Ent. Soc. iv. p. 42. 13°.

Hab. Mexico (Sumichrast').

SMICRA. | 79

2. Smicra dimidiata.

Conura dimidiata, Sichel, Ann. Ent. Soc. Fr. (4) v. p. 3907.

Hab. Mexico, Orizaba !.

7 3. Smicra pulchra.

Smicra pulchra, Cresson, Proc. Ent. Soc. Phil. iv. p. 94'; Trans. Amer. Ent. Soc. iv. p. 50°.

Smicra transitiva, Walker, Trans. Ent. Soc. (8) i. p. 371.

Hab. Cusa; Mexico}.

4. Smicra quadridentata.

Rufo-testacea ; ore, mesopleuris, maculis mesonoti cum scutello postice antennisque nigris; femoribus posticis

4-dentatis; antennarum apice rufo, scapo testaceo; alis fuscis, apice fere hyalinis. ?.

Long. 8 millim.

Hab. GuatemMata, San Gerénimo (Champion).

The head, thorax, and legs are covered with a short, sparse, pale, glistening pubes-

cence. The front is somewhat hollow in the centre; a blunt projecting ridge runs

from a little above the antenne to the clypeus, and on each side and above the latter

is a hollow space; the lower part of the head is obscurely transversely striated; the

upper part coarsely punctured, but not so strongly as the thorax. The space around

the outer ocelli and a broad band from the lower ocellus to the base of the antenne

are black, as is also the back of the head. Scape longish, rather narrow; flagellum

thick, the joints rather closely pressed together. Thorax coarsely and uniformly

punctured all over; the scutellum projects behind, where it has, as usual, a broad

border, which projects on each side into two blunt teeth; an obscure carina is in the

centre at the base. The metathorax has a moderate slope, the second and third rows

of fields are large; in a line with the centre of the scutellum is a carina which divides

two large equal fields, and on each side of these is a longer one; immediately below

the two square fields is a slightly larger pentagonal one, which has attached to it on

either side a small square one; the other Aelds are larger than usual. The petiole

of the abdomen is about one third of the length of the posterior coxe, and about one

fourth of the length of the abdomen, which is ovoid, narrowed towards the apex; the

sheath of the ovipositor is black, and hairy at the apex. The posterior femora have four

large, thick, slightly curved teeth, which reach beyond the middle of the tibie ; they

are black at the apex. The following parts on the thorax are black—a large mark in

centre of mesonotum, longer than broad, a shorter and narrower line on either side of

this, a much narrower transverse one running at the base of scutellum from one tegula

to the other; a large oval mark on the apical portion of scutellum, the mesopleura, and

mesosternum. Wing fuscous, the apex almost hyaline; throughout there is a distinct

violet iridescence.

80 HYMENOPTERA.

This may perhaps be S. compactilis, but it does not quite agree with the description,

and the antenne were broken off in Cresson’s single specimen, so no description is given

of these important organs. There is no mention of S. compactilis having a black trans-

verse line at base of scutellum, and the abdomen is stated to be pale yellow at base and

apex, which is not the case with S. 4-dentata.

<——~- 5, Smicra compactilis.

Smicra compactilis, Cresson, Trans. Am. Ent. Soc. iv. p. 50°.

Hab. Mexico (Sumichrast').

6. Smicra championi. (Tab. V. fig. 1, 2.)

Flava, flagello brunneo, apice nigro, facie linea medio, maculis thoracis et pedibus posticis nigris, femoribus

posticis 4-dentatis, magnis; alis hyalinis. ‘

Long. 7 millim.

Hab. Panama, Bugaba (Champion).

Scape almost cylindrical, shorter than the second, third, and fourth joints together ;

second joint a very little longer than third; annellus a little longer than broad ; base

of flagellum not much thinner than apex. Head deeply excavated in front in middle,

the excavation black, as isalso the back of the head. Prothorax and mesonotum closely

covered with large round punctures; pleure obsoletely punctured, the centre with an

oblique excavation, which is transversely striated and black. At the base of mesonotum

is a broad, black mark which does not go completely across; in centre isa mark, narrow

at base and apex, wide in middle, which joins the basal one to another transverse one

at base of scutellum ; from this a broad mark runs to the pronotum, which it joins in

front of tegule, becoming wider as it reaches the pronotum. A narrow line goes

through the centre of scutellum, the apex of which is entirely black; at the base the

sides of scutellum are bordered with black. Scutellum bluntly bituberculate. Meta-

thoracic fields moderately well defined, central appendiculated, wider than long, five-

angled, the edges of metathorax bluntly tuberculated. Petiole half the length of

abdomen, and scarcely half the length of posterior coxe; these are black at the apex.

There is a small mark, longer than broad, on upperside, a longer mark between and

touching the two apical teeth ; the trochanters, knees, and apex of tibie are also black ;

teeth black, except at the base; the three apical are three fourths of the width of

femora, the basal shorter, thicker, and blunter. At the base of third abdominal

segment is a narrow black band; ovipositor black.

This is a narrower and more slender species than S. guadridentata; the punctures on

the head are almost obsolete, the front is more deeply excavated, petiole longer and

thinner, coxee longer and thinner, the teeth are longer and sharper, and the hair on

the lower side of femora is very sparse, not dense as in S. guadridentata. It seems to

come very near S. exornata ; but that species has not the centre of the head black, the

SMICRA. 81

antenne have the flagellum “blackish above, fulvous beneath,” and the posterior

femora bear more black, including three spots on inner side.

7. Smicra exornata.

Smicra exornata, Cresson, Trans. Amer. Ent. Soe. iv. p. 50°.

Hab. Mexico (Sumichrast }).

8. Smicra sexdentata.

Flavo-testacea ; scapo supra, maculis 4 parvis mesonoti, linea mesopleurorum, coxis posticis supra, trochanteribus

posticis femoribusque posticis 3-maculatis, nigris ; femoribus posticis sexdentatis, magnis ; alis hyalinis.

Long. 8 millim.

Hab. Mexico, Presidio (Forrer).

The face and underside of the scape are pallid yellow, the latter is hollowed on the

outerside at the apex. The transverse furrow over the mouth is broad and deep; the

fovew at side of the clypeus deep, sharp at the ends, and half the length of the transverse

groove. ‘The face below the antenne projects broadly, there being no keel; the head

above the antenne is deeply excavated, the excavation reaching to the lower ocellus;

it also extends a little below the antennz. Lower part of the head smooth, shining,

the upper coarsely punctured. Pro- and mesonotum coarsely punctured, and covered

(as is also the vertex) with long black hairs; the mesopleura in the centre deeply

excavated, smooth, shining, impunctate ; the rest of pleuree coarsely punctured. The

scutellum, as usual, is margined, and at the apex ends in two blunt teeth. The meta-

thorax is reticulated into wide areas ; in the centre is an irregular furrow, which widens

in the centre, where there is, on each side of it, a narrow area; the upper area is large,

pentagonal.

The teeth on side of the metathorax are mere rugosities, except the lowest ; the hair

on the metapleura is partly in tufts. The pronotum bearsa narrow black line on either

side; there is a short black transverse one on middle lobe of the mesonotum, a smaller

round one at the sides, and a broad triangular one on apex of the scutellum ; the hollow

middle of the mesopleura is for the most part black. The abdomen is smooth, shining,

impunctate, and of a lighter tint than the thorax; it is a little shorter than the head

and thorax. The apical and middle segments are fuscous at the junction of the seg-

ments; ovipositor black; the apical segments covered with short black hair. Petiole

thick, double long as broad.

The legs are of a paler tint than the thorax; on the upperside of the posterior coxe

is a broad black line which, at the apex, is continued all round as a black ring; the

trochanters are for the greater part black; on the outer side of the femora, between the

two apical teeth, is a black mark which is longer than broad. On the inner side above,

extending from a little beyond the middle, is a broad black line, and there is a shorter

BIOL. CENTR.-AMER., Hymenopt., February 1884. MM

82 HYMENOPTERA.

one lower down in the middle. There is a blunt tooth on the posterior coxe at the

apex above ; teeth on the femora large, black, except at the base ; the basal one is thicker

and stouter than the others, which are as long as one fourth of the breadth of the femora ;

they become a little longer towards the apex. Like the body the legs are covered with

black hairs.

—~—~ 9. Smicra octodentata.

Flava; maculis et lineis thoracis, trochanteribus posticis et maculis femorum posticorum nigris; alis hyalinis,

nervis nigris, femoribus posticis 8-dentatis, magnis, nigris.

Long. 6 millim.?

Hab. Mexico, Presidio, near Mazatlan (Forrer).

Flagellum about double the length of the scape, thick, increasing in thickness

towards the apex, closely covered with a fuscous pile; beneath it is faintly reddish.

Scape not carinated, moderately thick. Excavation on front deep, black beneath the

ocelli; behind the head is black in the middle. Mesonotum coarsely punctured,

mesopleura in middle striated in centre of depression, outside around it smooth,

impunctate; the rest coarsely punctured, but not so strongly as above. Scutellum

also coarsely punctured, margined behind, depressed in the centre. From the pro-

notum run four broad black bands towards the scutellum, but only the two inner ones

reach it; in front of the scutellum is a black transverse band narrowed in the middle;

at the side of the scutellum, behind the tegule, and in its centre is a small black mark.

In front the mesopleura is black, as is also the central depression, and the metasternum

is black. Metanotum reticulated, its sides straight. Posterior coxe nearly as long as

the femora, ovoid. Teeth on the femora large, curved, directed towards the apex; two

apical smaller and blunter than the rest, and nearly united at the base. The knees

and apex of the posterior tibie are brownish fuscous. The abdomen is unfortunately

missing from the only specimen I have. .

10. Smicra sicheli.

Conura scutellaris, Sichel, Ann. Soc. Ent. Fr. (5) iv. p. 888 (non Cresson); Cresson, Trans. Amer.

Ent. Soc. iv. p. 59°.

Hab. Mexico, Orizaba 1.

This species has eight acute teeth like S. octodentata, but the body is entirely

yellow, and the mesonotum transversely striated. The abdomen is described as shortly

pedunculated. |

SMICRA. 83

B. Femoral teeth small, minute, more than 8 in number.

1. Body reddish, scarlet, or orange. (Species 11-17.)

11. Smicra coccinata.

Smicra coccinata, Cresson, Trans. Amer. Ent. Soc. iv. p. 48. 30°.

Hab. Mexico},

This species is nearly related to 8. nigromaculata, but is sufficiently distinguished

from it by the thorax being transversely striated, by having only two broad black marks

on front of mesonotum, and the head yellowish.

12. Smicra nigromaculata, (Tab. IV. figg. 15,9; 15a, maxilla; 15 4, poste-

rior leg.)

Ferruginea ; antennis, vertice, maculis mesonoti, coxis posticis supra tibiarumque posticarum basi nigris ; femo-

ribus posticis 13-dentatis; alis fuscis. ¢.

Long. fere 8 millim.

Hab. GuatemaLa, San Gerénimo (Champion).

Head, thorax, and legs covered with a long fuscous pubescence; face transversely

striated, the strie being, however, not very clearly defined; the upper part of the head

is coarsely rugose; a sharp keel runs from the antenne down the face to the clypeus;

vertex depressed. Antenne stout, somewhat compressed, and longer than the thorax;

scape hollow on the underside, from the middle to the apex, in the centre; the face is

pale testaceous in colour; the middle of the head above, from the ocelli to the base of

the antenne, black. The thorax forms an ovoid mass, much longer, broader, and

higher than the abdomen; it is coarsely punctured. The scutellum is not much raised

above the mesonotum ; its apical margin has a broad border, and it does not project

much over the metanotum, which is semiperpendicular. Close to the base of the

scutellum, and in the centre, is a small round hollow, and from this runs an ill-defined

furrow to the apex, where it projects into the border, which also projects a little. The

metathorax ends on each side in a large, stout, blunt spine; metanotum reticulated. _

The petiole is scarcely half the length of the long posterior coxe, and about two thirds

of the length of the abdomen. There are thirteen teeth on the femora; those at the

base are small, but they become larger and more widely separated towards the apex.

The following parts are black :—a small round mark on each side of the pronotum;

a large, somewhat ‘triangular, mark on the mesonotum, with a red mark in its centre;

there is a longitudinal narrower line on each side of this, which becomes united by a

thin transverse line at the base of the scutellum, and this line again is united to the

large central mark by a short longitudinal line; a transverse line at the base of the

metanotum, and from the centre of this projects a short longitudinal line; a spot at base

of the scutellum, the space behind the metathoracic spine, the metasternum, an oblique

line on the mesopleura, mesosternum, the greater part of the posterior coxe above, and

MM 2

84 HYMENOPTERA.

the apical half beneath, trochanters, posterior knees broadly, and the femoral teeth.

The scape at its extreme base and on the underside to the apical third is pale reddish.

The wings are lighter at the apex than at the base.

13. Smicra flammeola.

Smicra flammeola, Cresson, Trans. Amer. Ent. Soc. iv. p. 48+.

Smicra flammula, Kirby, Journ. Linn. Soc., Zool. xvii. p. 66.

Hab. Mexico (Sumichrast) }. |

14. Smicra erythrina.

Smicra erythrina, Walker, Journ. Ent. i. p. 179'; Cresson, Trans. Amer. Ent. Soe. iv. p. 567.

Hab. Mexico, Orizaba },

15. Smicra cardinalis. (Tab. V. fig. 5, 2.)

Coccinea; pilosa, antennis trochanteribusque posticis nigris; femoribus posticis 12-dentatis, nigris, tarsis

pallidis ; alis fumatis, apice fere hyalinis.

Long. fere 8 millim.

Hab. Panama, Bugaba (Champion).

Antenne thick, scarcely becoming thinner towards the apex. Scape not longer than

first joint of flagellum, compressed on lower side. Front broadly excavated. Each

ocellus situated in a depression, the anterior but very little in front of the others.

Mesonotum transversely rugose. Scutellum coarsely rugose, its apex produced at the

sides into rounded membranous lobes; in the middle, between these membranous

expansions, the scutellum is only faintly aciculated; behind it is semiperpendicular.

Pleure rugose ; the oblique excavation in the middle is broad, deep, smooth, and shining.

Metathoracic fields large, central longer than broad, acute and narrow at the base and

apex, the middle broader; there are six lateral fields, the lower ones with projecting

teeth. Petiole a little longer than the abdomen, which is a little longer than broad.

Ovipositor black, shortly projecting. Posterior coxe longer than the petiole by nearly

one third, slightly thicker in front of the middle than at the base, and becoming

thinner towards the point. Femora almost shorter than petiole; teeth blunt; the

apical widely separated; the hair on the head and thorax is black, on the legs white.

16. Smicra ferruginea.

Ferruginea ; antennis (scapo excepto), cauda dentibusque nigris; femorum posticorum dentibus 14; alis

hyalinis. .

Long. 64 millim.

Hab. Guaremaua, El Reposo (Champion).

The head and thorax are covered with a longish fuscous pubescence; the abdomen

and legs with a shorter and paler one. -Mesonotum and the scutellum transversely

striated, but the striation on the latter is much less distinct. The scutellum behind

SMICRA. 85

ends in the centre in a moderately sharp angle. The metathorax projects a little

behind; the upper central field is not distinctly pedunculated; the base is wider than

long; the lower central one is deeper, nearly round, and with a distinct margin; the

lower lateral field is round, and is a little smaller than the lower central one. The

petiole is nearly as long as the second abdominal segment. Abdomen a little longer

than the head and thorax, somewhat narrow, compressed, and narrowing from the base

to the apex. The teeth on the femora are small and blunt.

This species is closely related to S. miniata, but may be known therefrom by the

thorax being very nearly of the same tint as the abdomen, by the thorax being more

hairy, the hairs too being longer, by the upper central field being shorter and broader

and not distinctly pedunculated, by the lower central one being larger than the lower

lateral, the opposite being the case with miniata; the metathoracic teeth are much less

developed. It is also a smaller insect, and differs otherwise in the teeth on the femora

being fewer.

17. Smicra miniata.

Sordide rufo-testacea ; facie, metathorace petioleque pallidis, antennis (scapo excepto) caudaque nigris ; femorum

posticorum dentibus 19; alis hyalinis.

Long. 8 millim.

Hab. Nicaragua, Chontales (Janson); GuateMaLa, San Gerdnimo (Champion).

Head and thorax sparingly covered with a short fuscous pubescence. Abdomen

smooth, shining, almost glabrous. Head and thorax dull testaceous, mottled with

paler spots. Abdomen reddish testaceous; the legs are also of this colour, but are

paler at the base. Mesonotum transversely striated. Scutellum obscurely rugose-

punctured and margined behind. The upper central area of the metanotum has a

distinct peduncle; the area itself is longer than broad, rounded before, truncated

behind ; the lower central field is much smaller, smaller than the lower lateral one

and not much larger than the upper lateral. Each side of the metathorax terminates in

three large teeth, the two inner being placed nearer to each other than the second is to

the outer; the inner tooth is the largest and sharpest. ‘The peduncle is thick, stout in

the middle, and a little shorter than the metathorax. The abdomen is-a little longer

than the head and thorax. The teeth on the femora are small.

2. Body yellow, marked with black.

a. Wings for the most part blackish. (Species 18-21.)

18. Smicra trituberculata.

Straminea; capite, antennarum flagello, mesonoti medio, scutello postice, abdomine postice, coxis tibiisque

posticis (basi excepto) nigris; alis fuscis, medio hyalinis; femoribus posticis 13-dentatis, nigris, scutello

trituberculato.

Long. 9 millim.

Hab. GuatEMALA, Panima (Champion) ; Panama, Bugaba 800 to 1500 feet (Champion).

86 HYMENOPTERA.

The mouth and inner portion of the orbits of the eyes towards the middle are yellow,

as in S. miranda; the edge of the head on the lower side is narrowly lined with yellow.

The pro- and mesonotum coarsely transversely striated ; posteriorly the latter (as is also

the scutellum) is coarsely rugose-punctured; in the centre of the scutellum at the base

is a blunt thick tooth or tubercle. The apex is bituberculate, as in S. miranda, these

teeth being black at the top and entirely so behind, and are united by a broad black

band, which is shaped like a half-circle, looked at from behind. Metathorax reti-

culated; there is a central ridge which bifurcates near the apex. ‘The petiole is more

than two thirds of the length of the posterior coxe. The teeth on the hind femora

are short and blunt, as in S. miranda.

Apart from the differences in coloration this species is readily known from S. miranda

by the blunt tooth at the base of the scutellum and by the wings not being hyaline at

the apex, there being a broad hyaline band extending half a line beyond. The arrange-

ment of the areas on the metanotum is quite different, S. miranda having a lanceolate

field exactly in the centre, with two wider fields on each side, the upper four- and the

lower five-angled ; in S. trituberculata there is in the middle only an irregular carina.

———~19. Smicra miranda. (Tab. IV. figg. 13, 2; 13a, metathoracic fields.)

Smicra miranda, Cresson, Trans. Amer. Ent. Soc. iv. p. 49 .

Hab. Mexico!; GuateMaLa, San Gerdénimo; Panima and Senahu (Champion); Nica-

RaGuA, Chontales (Janson).

The amount of black on the mesonotum varies.

20. Smicra lamyrus.

Smicra lamyrus, Walker, Entomologist, 1842, p. 337; Cresson, Trans. Amer. Ent. Soc. iv. p. 58°.

Hab. Mexico}.

21. Smicra montezuma.

Smicra montezuma, Cresson, Trans. Ent. Soe. iv. p. 511.

Hab. Mexico 1.

b. Wings hyaline. (Species 22-36.)

22. Smicra azteca.

Smicra azteca, Cresson, Trans. Amer. Ent. Soe. iv. p. 51!.

Hab. Mexico |.

23. Smicra captiva.

Smicra captiva, Smith, Trans. Ent. Soc. (8) i. p. 42 (1862) ; Cresson, Trans. Amer. Ent. Soe. iv.

p. 58°.

SMICRA. 87

Smicra adaptata, Walker, Trans. Ent. Soc. (3) ii. p. 190 (1864) ; cf Kirby, Journ. Linn. Soc.,

Zool. xvii. p. 667.

Hab. Panama 1,—AMAZONIA 2.

24. Smicra conjugens.

Smicra conjugens, Walker, Notes on Chale. p. 53°; Cresson, Trans. Amer. Ent. Soc. iv.

p. 51. 423.

Hab. Mexico}.

25. Smicra punctata.

Chalcis punctata, Fabr. Ent. Syst. ii. p. 196°.

Conura punctata, Sichel, Ann. Soc. Ent. Fr. (4) v. p. 392 .

Smicra punctata, Cresson, Trans. Amer. Ent. Soc. iv. p. 57.

Hab. Mexico 2.—West Inpizs !.

26. Smicra pylas.

Smicra pylas, Walker, Entomologist, p. 337 (1842) ; List of Chale. i. p. 3°.

Hab. Mexico}.

This is probably identical with the last.

27. Smicra juxta.

Smicra juxta, Cresson, Trans. Amer. Ent. Soc. iv. p. 54. 49°.

Hab. Mexico}.

28. Smicra lenta.

Smicra lenta, Cresson, Trans. Amer. Ent. Soe. iv. p. 52. 43°.

Hab. Mexico}.

29. Smicra tolteca.

Smicra tolteca, Cresson, Trans. Amer. Ent. Soc. iv. p. 53. 45°.

Hab. Mexico }.

30. Smicra geniculata. (Tab. V. fig. 4, thorax.)

Flava; maculis thoracis, macula coxarum posticarum, trochanteribus genubusque posticis nigris; antennis

nigris, subtus brunneis, femoribus posticis 13—14-dentatis, abdomine supra fusco-maculato ; alis hyalinis.

Long. 54 millim.

Hab. Mexico, Presidio, near Mazatlan (Forrer).

Head smooth, shining, impunctate; front deeply excavated to the ocelli, the part

between the antenne keeled; there is a large shallow fovea above the clypeus on

88 HYMENOPTERA.

either side below each antenna. Antenne thick, the joints subequal and not pilose,

but with the surface rough. The mesonotum is covered uniformly all over with

moderately deep and closely set punctures; those on the collar are not so distinct; both

are covered with longish black hairs. Pleure smooth and shining, impunctate; there

is a narrow, transverse, black line behind the collar, a broader longitudinal one in the

centre of the mesonotum, which becomes narrower as it reaches the pronotum; at its

apex, and in front of the scutellum, is a broad transverse line *; there is a somewhat

triangular or rather pear-shaped mark at the apex of the scutellum, and two marks on

the postscutellum, all black. The scutellum is broadly rounded, with a broad margin

above and beneath; the sides smooth, shining. The metanotum has broad irregular

reticulations; the metapleura with indistinct reticulations. The petiole is a little more

than half the length of the posterior coxe, which have the teeth nearly of the same

size, except the basal tooth, which is a little longer and sharper, and the apical teeth,

which are a very little shorter, blunter, and more closely pressed together.

31. Smicra octomaculata. (Tab. V. fig. 8, thorax.)

Flava; antennis, scapo (subtus excepto), maculis sex mesonoti, apice coxarum posticarum, geniculis posticis,

tibiarum posticarumque apice nigris, femoribus posticis 15-dentatis.

Long. 7-8 millim.

Hab. Panama, Bugaba (Champion).

The scape reaches to the upper ocelli, compressed beneath; flagellum longer than

thorax. Front not very deeply excavated; lower part of head behind black. There are

four broad longitudinal marks at the base of the mesonotum, a broad transverse one

on the base of the scutellum and extending beyond it, a spot on the apex of it, a spot

on the upperside of the coxe at the apex, and the knees and apex of the posterior

tibie, black. ‘The teeth are small and blunt. Petiole about one half longer than broad.

Abdomen as long as the thorax, acute at the apex; the terebra projecting, black.

Thorax covered closely with round, shallow punctures ; the pleurz obsoletely punctured.

Scutellum broadly bordered behind. In front of the prothorax is a large black spot.

A larger species than S. maculicollis, and sufficiently distinguished from it by the

longer abdomen and ovipositor, by the larger size of the marks on the mesonotum, and

by the absence of a spot on the base of the metanotum and the posterior coxe.

32. Smicra maculicollis, (Tab. V. fig. 7, thorax.)

Flava; flagello antennarum, macula pronoti, lineis maculisque 4 mesonoti, scutelli apice, macula metanoti,

macula ad basin coxarum posticarum, trochanteribus posticis abdominisque apice nigris; alis hyalinis,

femoribus posticis 14-dentatis.

Long. 5 millim.

Hab. Panama, Volcan de Chiriqui 3000 to 4000 feet (Champion).

* T am not sure if this line is continuous, as the pin goes through its centre, and it may be only two

disconnected marks,

SMICRA. 89

Antenne longish, and become distinctly thickened towards the apex; scape obscure

yellow. On the thorax there is a transverse band at the base of the scutellum, and

from the middle of this runs a narrow line to the pronotum; at the base of the middle

lobe is a longish line, in the lateral one a shorter and more rounded mark, and in the

middle of the pronotum, in front, is a small mark somewhat broader than long. The

middle of the scutellum at the apex is black, the black mark being much narrowed to

a point at the base; at the apex the scutellum is margined, semitruncated in .the

middle, looked at from the head. The abdomen is shorter than the head and thorax,

bluntly pointed at the apex, brownish above, and with an obscure blackish band in the

centre above. The petiole is about one third of the length of the posterior coxe-

There are fourteen or fifteen teeth on the posterior femora ; these are obscurely brownish

at the sides and above, and the knees are obscure blackish.

This species differs from geniculata in having a black mark on the middle lobe of

the mesonotum; the flagellum is entirely black except at base beneath, and there is

only a single black mark at base of metanotum.

33. Smicra centralis. (Tab. V. fig. 6, thorax.)

Flava; antennis (scapo excepto), maculis mesonoti, metanoti medio, maculaque coxarum posticarum nigris;

abdominis dorso genubusque posticis fusco maculatis; femoribus posticis 12-dentatis ; alis hyalinis.

Long. fere 6 millim.

Hab. Mexico, Presidio, near Mazatlan (Forrer).

Head smooth, shining, impunctate, but the sides have a blistered look ; front deeply

excavated and carinated between the antenne. Over the oral region is a semioval

indistinct suture, surrounding the clypeus. The antenne become gradually thickened

towards the apex. Mesonotum and collar coarsely punctured and sparsely covered

with black hairs. There is a broad mark in the centre of the pronotum in front, a

broad transverse line on the mesonotum next to the collar, and which is narrowest

towards the centre, a broad longitudinal line in the lateral lobe, but which does not

extend to the apex, a broad transverse line in front of the scutellum, which becomes

expanded at the sides, and from it runs a broad Jongitudinal line in centre to the line in

front of the collar; a wide longitudinal line in the centre of the scutellum, narrow at

either end, but especially at the base, and the centre of the metanotum is broadly black.

The mesopleura are broadly excavated in the middle from the tegule, where the

excavation is narrow and obscurely transversely striated, and runs obliquely to the second

pair of coxee, becoming widened as it does so. This excavation is clearly margined, is black

in the centre on the lower three fourths, and is also striated in the middle, but not at the

sides, which are smooth and unpunctured. There is another deep narrower and more

perpendicular suture running from the tegule to the first pair of legs, and this is black

in the middle. The scutellum is bordered, rounded at the sides, somewhat more transverse

at the middle, where the border is slightly interrupted and depressed ; the upper half

BIOL. CENTR.-AMER., Hymenopt., February 1884. NN

90 HYMENOPTERA.

of the metanotum has a blistered appearance, and is separated from the lower half by a

ridge; the reticulations are obscure ; the metapleura are obscurely punctured ; petiole

thick, about one third of the length of the posterior coxee. Except that the basal tooth

is somewhat longer and sharper, and the apical blunter, shorter, and more closely pressed,

the teeth are about the same size. The ovipositor is black; the abdomen and the

upper part of the posterior cox are suffused with testaceous.

34. Smicra dorsivittata. (Tab. V. fig. 2, thorax.)

Flava; antennis supra, linea mesopleurorum, lineis mesonoti, striga media scutelli, metanoto supra, macula

coxarum posticarum, genubus posticis lete, trochanteribus fasciisque abdominis nigris ; alis byalinis.

Long. 9 fere 7 millim., ¢ 5 millim.

Hab. Volcan de Chiriqui, 3000 to 4000 feet (Champion).

Antenne thickish and becoming slightly thicker towards the apex; underneath the

colour is brownish ; the apex of the scape only is black on the upperside. There is a

broad black band in front of the mesopleura touching the prothorax. Along the

entire length of the middle lobe of the mesonotum and touching the pronotum is an

irregular black line, which is thinnest in the middle. At the end of this and on the

lateral lobe is a broad black mark, which increases in size a little beyond the middle,

and decreases again at the apex ; in front of the scutellum is a longish transverse line,

which is broader than that at the base of the mesonotum, and the two are united by

the central broad band in the middle of the mesonotum ; this central stripe broadens

out on both sides a little beyond the middle, narrowing again towards the scutellum.

In the centre of the latter is a broad mark, narrow at the base, becoming wider and

rounder at the apex. Apex of the scutellum broadly and roundly margined; in the

middle the margin is a little depressed. |

The abdomen is a little longer than the head and thorax ; the apex sharply pointed.

Petiole one third of the length of the hinder cox; the apex is deep black, and on ‘the

back are four brown transverse bands. The basal tooth on the hind femora is large, .

acute; there are twelve teeth in all.

The male has the mark on the scutellum smaller and broader compared to its length ;

the black fasciee on the abdomen are bordered with obscure brown, the scape is more

distinctly curved on the underside, and, as usual, the petiole is longer.

This species differs from S. geniculata in the black mark on the lateral lobe being much

larger and joined to that at the base, the other marks on the body being also much

larger; the abdomen is longer, narrower, and more distinctly marked with black on the

back ; the black on the metanotum is continuous, and the teeth on the femora are larger

and fewer in number.

35. Smicra panamensis. (Tab. V. fig. 3, thorax.)

Hab. Panama, Bugaba (Champion).

SMICRA. 91

In size, coloration, and arrangement of the markings, this species agrees with 8. dorsi-

vittata, except that all the black marks are longer and broader, and in addition to those

present on S. dorsivittata there is a small black mark immediately behind the tegule,

one on either side behind the scutellum, and there is a black line on the depressed

space on the mesopleura; the head is longer and thicker, the posterior coxe: broader

and shorter compared to the femora, being, with the trochanters, shorter than they ;

while with S. dorsivittata they are longer than the femora; the antenne are, if any

thing, shorter and thicker, and the third joint is longer compared to the fourth; the

abdomen is also a little shorter. The male I have not seen.

36. Smicra nigrifrons. (Tab. 5. fig. 9, thorax.)

Flava; abdomine rufo-brunneo, flavo variegato, lineis et maculis mesothoracis et macula coxarum posticarum

nigris, flagello antennarum brunneo, supra nigro; femoribus posticis 20-dentatis ; alis hyalinis. 9°.

Long. 6 millim. .

Hab. Panama, Bugaba (Champion).

Head and thorax densely covered with long black hair; hair on the abdomen shorter

and thinner. Antenne thick, the flagellum of nearly uniform thickness, closely covered

with a pale pubescence; third joint nearly one half longer than the fourth; last three

joints closely united; scape slightly bent at the base, scarcely keeled on the lower side.

Head broad, the excavation above the antenne shallow; behind the head is black; a

narrow black line runs from the anterior ocellus to this black portion, and there isa

triangular black mark above the antenne. There isa small black mark in front of

pronotum. The space between the prothorax and mesothorax laterally and between

the latter and metathorax black; the shallow space on the mesopleura for the greater

part black. The edge of the mesonotum in front, the borders of the middle lobe to the

scutellum, the base of the scutellum, and a longitudinal line running from the last to

the line at base of the mesonotum black; these lines are narrow and of nearly equal width.

There is a small black mark on the lateral lobe of the mesonotum, a longitudinal narrow

line on the scutellum ; the sides of the latter and an oblong mark on the posterior coxe

black. Scutellum margined behind, and narrowed to a blunt point at the apex. Reticu-

lations on the metanotum indistinct ; above it has a blistered appearance. Petiole thick,

one half longer than broad, shorter than the metathorax. Posterior coxe with the

trochanters as long as the femora. Femoral teeth very minute and closely set, forming

a serrated edge. Abdomen a little longer than the head and thorax together, the apex

acuminate, with the ovipositor projecting, black. Nervures on the wing fuscous.

The three narrow continuous lines on the mesonotum and the rufous abdomen variegated

with yellow separate this distinct species from the other yellow forms. The arrange-

ment of the black lines and spots on the thorax is nearly the same in S. maria, Riley ;

but that has the base of the metathorax black, and the abdomen of the same colour as

the thorax, and with six black bands on the back.

NN 2

92 HYMENOPTERA.

c. Wings hyaline, with a moderately large fascia stretching across from the cubitus.

(Species. 37.)

37. Smicra maculipennis.

Testacea; antennarum apice, mesonoto, abdominis dorso, petiole pedibusque posticis nigro-maculatis ;. alis

hyalinis fascia fusca.

Long. 4 millim.

Hab. Panama, Volcan de Chiriqui 3000 to 4000 feet (Champion).

The body is covered with a long white pubescence; the head is finely punctured ;

pronotum, mesonotum, and metapleura coarsely punctured ; abdomen smooth, shining.

The head is only slightly hollowed in front; between the antenne it projects broadly

and bluntly. On the mesopleura is an oblique broad hollow, which is transversely

striated ; the pronotum is of nearly equal breadth throughout above; the sides are

impunctate, as is also the mesopleura in front of the hollow space. The scutellum is

margined, but not very strongly, behind, where it is somewhat sharply rounded ; the

metanotum slopes gradually to the petiole; it is blistered above. There is a central

keel which bifurcates in the middle; the other keels are rather indistinct. The petiole

is a little more than one third of the length of the posterior cox; it is striated and

ridged at the sides. At the apex of the posterior coxe is, in the centre, a large tooth,

and nearer the apex and on the inner side of it is a smaller tooth. The coxe are

longer than the femora; the teeth on the latter are numerous and minute. The

antenne are thickened towards the apex; the scape is hollow at the side, the two apical

joints are black. The greater part of the middle lobe of the mesonotum, parapsides,

the apex of the scutellum in the middle, metapleura, and metasternum in part, the apex of

posterior coxe (where they are transversely striated), the posterior femora on lower side,

and the middle of the abdomen, black. The four anterior legs are pale testaceous.

3. Body yellowish or testaceous, without any black markings.

(Species 38-40.)

The three species known from Central America of this type of coloration may be

recognized by the following Table :—

Petiole long, narrow, half the length of posterior coxe ; a small fascia

at cubitus. . ... - (38) fulvo-variegata.

Petiole short, thick, not half ‘the length of cox ; no ‘fascia at ‘cubitus :

Abdomen acuminate at tip; sheath of ovipositor projecting ; pos-

terior femora with 19 teeth . . . . . » 2 « . (39) fulvo-maculata.—

Abdomen obtuse at tip; sheath of ovipositor hidden ; posterior

femora with 12 teeth . . . 2. 2. «1 ee ee « © (40) obtusiventris.

38. Smicra fulvo-variegata.

Flava, fulvo-variegata ¢, flavo-variegata @; abdomine fulvo, flavo-maculato, flagello antennarum fusco,

femoribus posticis 17-19 dentatis ; alis hyalinis, macula substigmaticali fusca, nervis fuscis.

Long. fere 5 millim.

SMICRA. 93

Hab. Muxtco, Presidio (Forrer).

In one specimen the head and thorax are fulvous, variegated with yellow, in the

other they are yellow variegated with fulvous; in both the abdomen is fulvous, marked

on the back at the junction of the segments with yellow bands. Scape narrow, curved,

cylindrical ; joints of the flagellum closely united, covered with a close pile. Head not

excavated in front beyond a furrow which runs down from the ocelli, projecting

broadly between the antenne, the projection being triangular. Furrow behind the hind

ocellus deep, wide. Thorax obscurely punctured, almost impunctate, pleural depression

obscurely striated. Scutellum bordered behind, ending in a blunt point. Metanotum

with faint reticulations at the apex, projecting at the side into a large tooth. Petiole

about one half the length of the coxe. Abdomen of the length of the thorax, the

apex bluntly acuminate; ovipositor shortly projecting. Posterior femora not much

longer than coxe.

The male has the petiole, if any thing, shorter and thicker than in the female, the ab-

domen is longer and thinner, and the scape is thicker at the apex and carinated beneath.

The absence of black on the thorax and petiole, smaller fuscous mark on the wings

(it not reaching to the middle of the wing), longer petiole, and almost impunctate thorax

easily enable this little species to be separated from S. maculipennis. ‘

39. Smicra fulvo-maculata.

Citrina, fulvo-maculata; antennarum flagello nigro, subtus brunneo ; alis hyalinis, nervis sordide flavis; femoribus

posticis 19-dentatis.

Long. 6 millim.,

Hab. Panama, Bugaba (Champion).

Antenne thick, becoming somewhat thicker towards the apex, the joints distinctly

separated at the apex ; scape nearly straight, not carinated beneath. Furrow between the

two posterior ocelli deep, broad, and there is a curved groove on their outer side. Head

and thorax covered with a pale, glistening pubescence. Mesonotum obscurely punc-

tured, transversely striated in front of the scutellum, which is a little rounded at the

base; its apex produced into a point, margined. Metanotum with a central keel, which

bifurcates in the middle, forming a narrow longish cellule; from the point where it

bifurcates a keel runs to the side. Above this keel the metanotum is smooth, below it

reticulated ; sides of the metanotum straight, margined. Petiole thick, not one half longer

than broad. The abdomen: is obscure fulvous; but I am not quite sure if this is not

owing to discoloration; the base is yellow; sheath of ovipositor black, projecting.

Posterior knees and femora mostly fulvous.

40. Smicra obtusiventris.

Flava; antennis supra nigris, subtus sordide rufis, scapo flavo, tarsis posticis apice nigro; femoribus posticis

12-13-dentatis, parvis, nigris; alis hyalinis.

Long. 5 millim.

94 HYMENOPTERA.

Hab. Mexico, Presidio, near Mazatlan (Forrer).

The face is smooth, shining, impunctate; over the mouth is a short transverse

groove, and there is a small indistinct fovea on either side of it; above the antenne

the front is deeply excavated. Thorax covered with black hairs; mesonotum and

scutellum coarsely but not very strongly punctured ; pleuree smooth, shining, impunctate,

and with a large oblique excavation in the middle; the scutellum is bordered behind,

but there are no teeth. The metathorax has a central keel to the middle, having a

large area on either side, and ending in a smaller area, which is broader than long.

There are no lateral teeth. Petiole is short, not being much longer than one third

of the length of the coxe. The rest of the abdomen forms a longish oval, and is shorter

than the posterior coxe. The teeth on the femora are blunt and not very closely set ;

the basal three, however, are closely pressed together. Alar nervures fuscous. The

thorax is darker than the abdomen in colour, being honey-yellow. In the female the

abdomen is nearly oval, more obtuse at the apex than at the base. The ovipositor

proper projects a little, but not its sheath.

S. delicatula, Cresson, from Texas, comes near to, if it be not actually identical with,

the present species; but the Texan species is described as having the thorax “ imper-

ceptibly punctured, almost smooth,’ and the femoral teeth “numerous, very minute,”

terms which scarcely fit.

4. Body black, marked with yellow. (Species 41-52.)

41. Smicra pompiloides.

Smicra pompiloides, Walker, Notes on Chalc. p. 58; Cresson, Trans. Amer. Ent. Soc. iv. p. 55’.

Hab. Mexico }.

——~42. Smicra lecta.

Smicra lecta, Cresson, Trans. Amer. Ent. Soc. iv. p. 44°.

Hab. Mexico}.

——— 43. Smicra abdominalis.

Smicra abdominalis, Walker, Journ. Ent. i. p. 177; Cresson, Trans. Amer. Ent. Soc. iv. p. 57;

cf. Kirby, Journ. Linn. Soc., Zool. xvii. p. 65°.

Smicra ambigua, Cresson, Trans. Amer. Ent. Soc. iv. p. 44,

Hab. Mexico }.

——— 44. Smicra mendica.

Smicra mendica, Cresson, Trans. Amer. Ent. Soe. iv. p. 41°.

Hab. Mexico }.

SMICRA. 95

~~ 45. Smicra tenebrosa.

Smicra tenebrosa, Walker, Journ. of Ent. i. p. 181°.

Hab. Mextco }.

46. Smicra dorsimaculata.

Nigra; orbitis oculorum, pronoto laterali, maculis mesonoti scutelloque rufo-flavis ; abdomine flavo-maculato ;

tarsis flavis, tibiis femoribusque posterioribus rufo-flavo maculatis.

Long. 32 millim.

Hab. Guatemata, Volcan de Atitan 1500 to 3500 feet (Champion).

Mandibles yellow; the reddish yellow line round the eyes is narrow, and is inter:

rupted at the top and bottom; the head in front is rough, the front is but little exca-

vated. Thorax coarsely punctured, and covered with a sparse white pubescence ;

pronotum lined with reddish yellow all round; behind and close to the antenne the

band becomes broader. On the mesonotum and touching this band are two small

marks, which are longer than broad ; a broad line runs from it to the tegule, and a

broad band stretches from one side to the other. The scutellum is yellow, with a

narrow black longitudinal line running down the centre, and with two large irregular

reddish brown marks at either end, which stretch nearly right across; the apical

one extends to the apex of the scutellum, which is somewhat acutely pointed. The

metanotum is irregularly punctured. The petiole thick, and about three fourths of

the length of the posterior coxe. At the base of the abdomen are two short yellow

marks; behind these two longer and broader ones, and close to the apex are two

roundish ones. The trochanters are testaceous; the four anterior tibie are reddish

yellow, black behind; the posterior black with a reddish yellow mark close to the base,

and a larger one at the apex on the outer side and at the sides. The posterior femora

are black, the apical third on the outside yellow, variegated with brown; the apex

is yellowish brown on the inner side also. The teeth are small, and occupy the whole

of the underside.

47. Smicra toluca.

Smicra toluca, Cresson, Trans. Amer. Ent. Soc. iv. p. 42°.

Hab. Mexico }.

48. Smicra petioliventris.

Nigra; ore, orbitis oculorum, abdominisque basi flavis; thorace, abdomine pedibusque flavo et brunneo

maculatis.

Long. 4 millim.

Hab. Guatema.a, Volcan de Atitlan 2500 to 3500 feet (Champion).

The yellow band round the eyes is narrow, and is interrupted in the middle; on the

underside the scape is yellowish at the base. The sides of the pronotum are broadly

96 HYMENOPTERA.

yellow, and with a black mark in the centre of the yellow portion. The sides of the

middle lobe of the mesonotum are bordered with yellow, somewhat.interrupted towards

the middle ; the sides of the scutellum are broadly bordered with yellow, and towards

the apical third the yellow projects in a triangle to the middle on both sides; the apex

is depressed and rounded, not projecting much over the metanotum, which is yellow at

the sides close to the petiole; the petiole is narrow and about three fourths of the

‘length of the abdomen, which is not longer than the posterior coxe. The sides and

ventral surface of the abdomen are reddish yellow. On the top at the base is a large

triangular mark, of which the sharp end is in front; behind this is a large broad

transverse mark, interrupted at the top; behind this, again, are three shorter yellow

marks, which do not reach the top, and close to the apex and more to the top is a more

rounded mark. All these have the yellow surrounded with brown, which passes

imperceptibly into the yellow. The four anterior legs are yellow, the femora having

a testaceous tinge. Internally the apical two thirds of the posterior femora are

yellow, bordered with brown; on the outside the apical two thirds are yellow, except

at the top, and the apex is more or less brownish; on the top above and in front of

this yellow portion is a yellow mark, which is longer than broad. The posterior tibie

are yellow, variegated with testaceous and posteriorly with black.

49. Smicra divisa.

Smicra divisa, Walker, Journ. of Ent. i. p. 178’.

Hab. Mexico 1.

50. Smicra lauta.

Smicra lauta, Cresson, Trans. Amer. Ent. Soc. iv. p. 45°.

Hab. Mexico}.

51. Smicra nigriventris. (Tab. XIV. fige. 14; 144, posterior leg.)

Nigra; facie, orbitis oculorum, macula magna pronoti, tegulis, maculis 2 mesonoti, scutello, femoribus fere totis,

tarsis tibiisque 4 anterioribus et posticarum basi flavis.

Long. 43 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

The body is covered with a longish pale pubescence. Antenne thick, the joints

closely pressed together; the apex sharply conical and brownish on the underside.

Scape yellow on the underside; the face below the antenne, the lower orbits of the

eyes within and without are yellow, but the part opposite the ocelli is black ; the front

between the ocelli and the base of the antenne black. The mesonotum is punctured ;

the mark on the pronotum reaches to near the middle above, is large and somewhat

triangular, but longer than broad. The longitudinal marks on the mesonotum reach

a little beyond the middle, and converge at the apex. The scutellum is almost entirely

SMICRA.—PHASGANOPHORA. 97

black ; there is a narrow black line running down the centre and dividing the yellow

in two; the apex is sharply rounded and entire. Metanotum distinctly reticulated.

Petiole thick, and scarcely one half of the length of the posterior cox. ‘The four

anterior cox and femora are for the greater part yellow on lower side, and the latter

are lined with black behind. The posterior femora are yellow on the outside, except

at the apices and a large bell-shaped mark in the middle which are black ; on the inner

side they are black, with a yellow mark at the apex; the teeth are seventeen in number,

are closely pressed and indistinct at the base, and become larger towards the apex ;

the extreme base of the hind tibiz is black; the yellow mark on it does not extend to

the inner side.

PHASGANOPHORA.

Phasganophora, Westwood in Griffith's Animal Kingdom, Insects, u1. p. 482, t. 77. f. 2 (1882) ;

Walker, Entomologist, i. p. 188 (1840); Sichel, Ann. Soc. Ent. Fr. p. 357 (1866).

Trigonura, Sichel, loc. cit. p. 358.

The typical representatives of this genus or subgenus have the antenne inserted in

the middle of the face, and the abdomen sessile as in Chalcis, and merely differ from

that well-known genus in the apical abdominal segments being prolonged into a “ tail,”

which forms a sheath for the ovipositor. This is the division of “ Phasganophore

chalcidiformes” of Sichel, and to it the subgenus Trigonura belongs, it differing merely

from typical Phasganophora in the tail being “depressa, subtriangularis.” This

section might also be referred to the genus Conura, Spinola, which, as defined by Sichel,

contains species with a sessile abdomen=Conure chalcidiformes, and with it petiolated

—Conure smicriformes ; the sole difference of any value between Conwra and Phasga-

nophora consisting in the tail, “‘ formée chez les Conura par le cinquiéme segment et

Yepipygium, allongés et rétrécis d'un cété a l'autre, sans aucune participation de l’hypo-

pygium,” while with Phasganophora the hypopygium alone forms the “tail.” I find,

nowever, so many transitions in this respect, that the value of this character does not

appear to me to be of much importance; and it is, moreover, a purely sexual one. To

Phasganophora Sichel adds another subgenus, Allocera, remarkable for having the

antenne inserted immediately over the mouth=Phasganophore haiticelleformes. It

would thus appear that species having the apical segments of the abdomen elongated

exist which have the characters of Chalcis, Halticella, and Smicra; and in separating

them we must either give paramount importance to the form of the tail, or to such

points as the manner in which the antenne and abdomen are inserted. It seems to me

that as the latter characters are common to both sexes, they are of the most importance

for taxonomic purposes, especially as the structure of the tail is not constant. Walker

(«Notes on Chalcidide,’ p. 39) combines Phasganophora, Allocera, and Trigonura with

Halticella. André (Ann. Soc. Ent. Fr. 1881, p. 337) would unite the Phasganophore

chalcidiformes and the Conure chalcidiformes with Chalcis, the Phasganophore smicri«

BIOL. CENTR.-AMER., Hymenopt., July 1884. 00

Pde. 3

98 HYMENOPTERA.

formes and the Conure smicriformes to Smicra, and Allocera to Halticella ; and with

this opinion I am inclined to agree. As, however, it is possible that an accession of

fresh material (and especially of males) may show that the elongation of the abdomen

into a tail may be after all of some generic value, I have retained in the meantime

Phasganophora, with Conura as a synonym.

1, Phasganophora condalus.

Phasganophora condalus, Walker, Entomologist, i. p. 185 (1840) ’.

Phasganophora thoracica, Sichel, Ann. Soc. Ent. Fr. (4) v. p. 361, t. 9. f.5*.

Hab. Mexico, Orizaba?; Guatemana, Las Mercedes 3000 feet (Champion).—

Braziu 4,

The quantity of black on the thorax and abdomen varies a good deal.

2. Phasganophora rufitarsis. (Tab. V. fig. 10,2; 10a, apex of abdomen;

10, posterior leg ; 10c¢, labium; 10d, maxilla.)

Nigra; flagello antennarum, tarsis abdomineque rufis; alis flavescenti-hyalinis, basi fumata, femoribus posticis

8-dentatis.

Long. 9 millim.

Hab. Panama, Volcan de Chiriqui 3000 to 4000 feet (Champion).

Face covered with a silvery white sparse pubescence. Thorax with a close fuscous pile ;

apex of the abdomen with long reddish hairs. Head and thorax coarsely punctured ;

the hollow oblique space on the mesopleura transversely and coarsely striated. Between

the antenne the front projects, and there is a hollow space between their base and the

lower ocellus, this space having a raised border which goes round the ocellus.

Mandibles piceous. In front the pronotum is striated. The apex of the scutellum

projects in the middle; this projection is emarginated in the middle, and is hollow in

the centre above. Metanotum reticulated ; its central field is lanceolate in shape. A

little below the wings and behind them is a blunt tooth. The apex of abdomen (cauda)

is about two thirds of the length of the abdomen and is curved. The teeth on the

posterior femora are large ; the latter are about the length of the coxe and trochanters.

At the base the abdomen is blackish, and there is in the centre above a triangular

depression.

This species comes apparently nearest to P. conigastra, Perty, from South America ;

but that species has the abdomen black. From the Mexican P. rujfiventris the red

antenne readily separate it.

3. Phasganophora rufiventris.

Phasganophora rufiventris, Sichel, Ann. Soc. Ent. Fr. (4) v. p. 360, t. 9. f. 4’.

Hab. Mexico, Orizaba?.

PHASGANOPHORA.—HALTICELLA. 99

4, Phasganophora crassicauda.

Phasganophora (Trigonura) crassicauda, Sichel, Ann. Soc. Ent. Fr. (4) v. p. 377, t. 10. f. 1°.

flab. Mexico, Orizaba }.

CHALCIS.

Chalcis, Fabricius, Mant. Ins. i. p. 272; Spinola, Ann, Mus. xvii. p. 147; Walker, Ent. Mag. i.

p. 27.

Not very many species of this genus are known ; they are found generally distributed

over the New and Old Worlds. ‘They are very similar in coloration, being black, with

the legs marked with yellow or white.

1. Chalcis pubescens.

Chalcis pubescens, Walker, Notes on Chale. iii. p. 47°.

* Hab. Mexico}.

———92. Chalcis comitator.

Chalcis comitator, Walker, Trans. Ent. Soc. 3rd ser. i. p. 350°.

Hab. Mexico 1.

3. Chalcis compacta.

Chalcis compacta, Walker, Journ. Ent. i. p. 183°.

Hab. Mexico 1, Orizaba.

4, Chalcis ovata. (Tab. IV. fig. 16, 2; 16 a-c, trophi; 16d, posterior leg.)

Chalcis ovata, Say, Long’s Second Exped. ii. p. 326 (1824) ; Cresson, Trans. Amer. Ent. Soc. iv.

p- 59°.

Chalcis annulipes, Walker, Ent. Mag. ui. p. 29 (1835).

Chalcis incerta, Cresson, Proc. Ent. Soc. Phil. iv. p. 101.

Brachymeria panamensis, Holmgren, Eugen. Resa, Ins. p. 4377.

Hab. Unttep States }.—West-Inpian Istanps.—MeExico!; GuatemaLa; Panama 2.

This is perhaps C. flavipes, Fabr. (non Panz.); but the description is not very good.

HALTICELLA.

Halticella, Spin. Ann. Mus. Hist. Nat. vii. p. 148.

A genus of wide distribution, principally distinguished from Chalcis by the antenne

being inserted immediately over the mouth.

00 2

100 HYMENOPTERA.

~— 1, Halticella ornaticornis.

Nigra; basi antennarum, scapo, flagelli articulis 2-3, tegulis, trochanteribus, femoribus anterioribus subtus,

tibiis anterioribus proparte tarsisque rufis; alis hyalinis, macula subcostali fusca.

Long. 5 millim.

Hab. Panama, Bugaba (Champion).

Head and thorax strongly punctured, covered with a stiff silvery pubescence.

Abdomen smooth and shining, the apical segments thickly covered with a longish

silvery-white hair. Head not very deeply excavated in front. Antenne a little longer

than the head and thorax together, moderately stout, thickest at the apex. Scutellum

bordered behind, the border incised in the middle. Metathorax strongly reticulated.

Petiole very short, so that the abdomen is semi-sessile. The four anterior tibie are

black (more or less) in the middle ; the thick posterior femora have no teeth beneath ;

the spurs on the hind tibie are short and thick. Wing-nervures testaceous, except at

the black fascia in front of the cubitus, which is also black. The ovipositor projects a

little.

ACANTHOCHALCIS.

Antenne 11-jointed, the flagellum of nearly equal thickness throughout; the first

two joints small, the rest much longer than broad, the last conical at the apex, slightly

longer than the penultimate (I am not quite sure but that the last joint in reality

represents two closely united), inserted not far from the mouth. Antennal groove

deep, reaching close to the ocelli, and only wide enough to receive the two antenne ;

its sides with a large broad projecting border. | Pronotum large, subquadrate, pro-

jecting in the middle so as to fit into the head, which is concave behind; sides of the

prothorax excavated. Metathorax produced at the sides into a large, flat, triangular

mass. Abdomen sessile, its apex produced into a sharp spine; at the sides, where it

clasps the ovipositor, it is toothed. Ovipositor as long as the abdomen. Cubitus half

the length of the ulna; otherwise the nervures in both wings are as in Leucospis.

Posterior femora thickened, toothed on the underside; claws simple; tibie with one

spur at the apex.

In the form of the antenne, head, thorax (except in the peculiar shape of the meta-

thorax), legs, and wings this genus does not differ from Leucospis, which it also resembles

in its large size; but the form of the abdomen and ovipositor is very different, the.

wings, also, not being folded wasp-like, as in Leucospis. The form of the last abdo-

minal segment is different from anything known in other Chalcidina with elongated

ovipositors, for it is not developed into a long sheath clasping the ovipositor in

all its extent.. The apical segment is not unlike what we have in Sirex; it bears a

stigma.

ACANTHOCHALCIS.—EUCHARINA. 101

<— 1. Acanthochalcis nigricans. (Tab. VI. fig. 14,2; 144, apex of abdomen.)

Nigra; geniculis, abdominis apice terebraque rufis ; alis hyalinis, apice fumatis.

Long. 11 millim., terebra 4 millim.

Hab. Mxxico, Northern Sonora (Morrison).

Head and thorax coarsely and rugosely punctured, finer at the base of the meso-

notum and sides of the collar. Mesopleura with a large deep oblique excavation

(which is finely striated and reaches to the bottom) between the second and third

pairs of legs; close to the prothorax there is a semi-perpendicular excavation, also

striated. Scutellum large, rounded above; a little down from the apex is a projecting

neck, above which is a single row of reticulations, and there is another row extending

right across the thorax beneath it. Metanotum contracted in the middle; the sides

project into a large triangle, flat above, the apex of it projecting over the rest.

Abdomen closely punctured, except at the junction of the segments, where there is a

shining impunctate band. The ovipositor is broad, compressed laterally, and with a

groove in the side, which, however, does not extend to the apex ; there are three large

teeth on the lower side of the apical segment. Coxee (especially the large hind pair)

punctured, as are also the posterior femora. The tarsi are covered closely with bristle-

like hair, especially thick on the underside; tibiz with longer, thinner, more depressed

hair. The head is covered with white glistening hair; there is a tuft of white silvery

hair on either side in front of the scutellum, a tuft at the base of the hind coxe,

a smaller one at the apex, and a large tuft on each side of the third and fourth

segments, The edge of the pronotum behind, a spot below the tegule, one on the

mesopleura, and more or less of the scutellum are ferrugineous.

EUCHARINA.

This group contains some of the most remarkable forms of Chalcidide. Considerable

variation is shown in the structure of the antenne ; in many males the joints bear long

rami, either one or two to a joint. The most striking peculiarity, however, is exhibited

by the scutellum, which in most of the genera is provided at the apex with two processes

which, from being mere short teeth in some, become developed in others into long

processes which project beyond the apex of the abdomen, and may be so broad as to

cover it completely.

Genera are found in all parts of the world; these at present stand in need of revision.

There are not, I think, more than six South-American genera, and only four have yet

been found within our limit. These may be distinguished as follows :—

1 (2). Scutellum simple at apex. Antenne 13-jointed, simple in both sexes. Orasema,

2 (8). Scutellum ending in two short blunt teeth, which are not much longer

than broad. Sides of metathorax with a leaf-like expansion at apex.

Antenne serrate in female, simple in male . . . - : « + « « Lophyrocera,

102 HYMENOPTERA.

3 (2). Scutellum ending in processes which are as long as the abdomen. An-

tennz in male flabellate.

4 (5). The third joint of antennz as long as all the succeeding joints together. Lirata.

5 (4). The third joint not much longer than fourth. . . . . . . . « Kapala,

LIRATA.

Antenne 10-jointed, simple, pilose ; the third joint nearly as long as all the succeeding

together ; all the joints thicker at the apex than at the base. Scutellum hollowed in the

centre above, and having at the apex two thickish curved spines, which reach nearly to

the apex of the abdomen, and not projecting beyond the wings when these are folded

along the sides. Metathorax simple, without tubercles. Petiole nearly as long as the

abdomen, stout, cylindrical.

The very long third joint of the antenne enables this genus to be known from

Thoracantha and Kapala.

1. Lirata luteogaster. (Schizaspidia luteogaster, Tab. V. fig. 16; 16a,

antenna.)

Nigra; pedibus scapoque antennarum flavis; abdominis apice lete luteo; alis hyalinis. —

Long. 6 millim.

Hab. Panama, Island of Taboga (Champion).

The antenne are nearly as long as the abdomen, become slightly thickened towards

the apex, and are covered with closely pressed hairs. The apical joints are shorter

and more distinctly separated than the basal; the last joint is double the length of

the preceding. Head covered with waved reticulations; the vertex in the middle is

depressed, opaque, and obscurely reticulated. Thorax covered with more or less waved

reticulations all over, and sparsely with longish black hairs; at the base, in the centre,

the mesonotum is depressed, the depression being smooth and shining, much longer

than broad, and narrowest at the apex. Scutellum broadly depressed in the centre,

finely aciculated. ‘The processes of the scutellum converge slightly at the apex; they

are thick, closely and coarsely transversely striated, and are longer than the head and

thorax together, being as long as the antenne. Petiole thick, transversely striated, and

somewhat longer than the rest of the abdomen, which is strongly compressed, a little

longer than broad, and, if anything, longer than the abdomen. Coxe black, obscurely

striated.

KAPALA.

Chirocerus, Brullé, Hist. Nat. des Ins., Hym. iv. p. 571 (non Latr.).

In this genus the antenne are 11-jointed; the joints short, the third and fourth

subequal, scarcely longer than the others; the joints of the flagellum in the male bear

KAPALA.—LOPHYROCERA. -103

long rami. The scutellum ends in two long curved processes, which reach to the apex

of the abdomen. Petiole nearly as long asthe abdomen. Metathorax without tubercles,

and reticulated.

C —— 1. Kapala furcata. (Tab. V. figg. 17 & 17d,?; 17a, antenna 9; 170, head;

17 ¢, antenna 3.)

Eucharis furcata, Faby. Syst. Piez. p. 158, 2.

Eucharis flabellata, Fabr. J. c., 9; Walker, Entomologist, t. P. fig. 2.

Chirocerus furcatus, Brullé, Nat. Hist. des Ins., Hym. iv. p. 571, t. 38. fig. 5.

Hab. Costa Rica, Cache (Rogers); Guatemata, Cerro Zunil 4000 to 5000 feet,

Coatepeque 1500 feet, San Isidro 1600 feet (Champion); Panama, Volean de Chiriqui

2000 to 3000 feet (Champion).—Soutn AMERICA.

Apparently a common species. Walker (List of Chalcidide, p. 22) records it from

Sierra Leone, Africa; but this is no doubt an error. —

LOPHYROCERA.

In this genus the antenne in the female are serrated ; the joints are broader than long

and of nearly equal size; the third joint is not much longer than the following, and is

not so much produced above; the scape is not longer than the third and fourth together.

In all, there are apparently ten joints; but possibly there may be more, as the last

joint in the only specimen I have does not look like a terminal joint. The scutellum

is large, broad at the base, narrowing towards the apex, which ends in two blunt teeth,

and which are double as long as broad. The petiole is more than double as long as

broad, and is shorter than the short abdomen. The metathorax immediately below the

projecting scutellum projects into a blunt tooth-like process, which curves down to the

sternum, forming a rib-like border on either side. In the male the antenne are simple,

the joints longer than broad, the third joint one half longer than the fourth,

The antenne in this genus are serrated, as in: Schizaspidia, but they are not quite

identical otherwise; and in the males of the last -genus they are flabellate. Schizas-

pidia had better be reserved for the Old-World species.

1. Lophyrocera stramineipes. (Tab. V. fig. 18,9; 18a, antenna.)

Nigro-viridis ; scapo antennarum pedibusque pallide testaceis; petiole abdomineque subtus et apice brunneo-

testaceis ; alis hyalinis, nervis albis.

Long. 4 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

The head is distinctly metallic bluish green, and bears below the antenne a few

waved transverse striations; the vertex is also striated, but the striations there run

towards the mouth and are indistinct. Thorax covered with large deep punctures; the

104 HYMENOPTERA.

breast is finely punctured. Abdomen smooth, shining; twice as broad, or rather

high, as long; the ventral surface and the sides are obscure brownish testaceous.

2. Lophyrocera nigromaculata. (Tab. V. fig. 19, ¢; 19a, metathorax; 196,

scutellum.)

Brunneo-testacea ; capite maculisque thoracis nigris ; petiole et pedibus flavo-testaceis ; alis hyalinis.

Long. 54 millim.

Hab. Nicaragua, Chontales (Janson).

The vertex is longitudinally and the face transversely striated. From each antenna a

broad and deep groove runs to the clypeus; the head has a distinct border behind.

Antenne long and of nearly uniform thickness; scape very short, being scarcely double

the length of the ring ; third joint double the length of the fourth. Thorax, and the

sternum and mesopleure to near the top, covered with large and deep punctures.

Two longish, large, disk-shaped marks over the posterior legs, a mark in front of the

mesonotum, two large marks behind this uniting in the centre, a roundish small mark

outside of them, and touching them at their apex a somewhat triangular mark (which

is prolonged as a broad line to the end of the scutellum, where it becomes broad), all

black ; the lower side of the metanotum is also black. The scutellum ends at the apex

in two blunt teeth, which are twice as long as broad. The metapleure bear five or six

large longitudinal striations, and at the side project into large blunt processes. Petiole

long and slender, longer than the hind femora. On the back the abdomen is obscure

black, and the rest of it is browner and darker in tint than the thorax.

ORASEMA.

Antenne 13-jointed, longish ; third and fourth joints subequal. Scutellum simple, a -

transverse groove at the apex. Metathorax without tubercles. Petiole thickish,

cylindrical, three times longer than broad.

‘The ovipositor (which is not exserted) is quite remarkable for its size and breadth,

the spicule being as broad as in Cephus and many other sawflies. The borer is

toothed or indented at the apex (fig. 18¢), and the support becomes dilated towards.

the apical part, the apex itself, however, being sharply pointed, much sharper than the

borer (fig. 18¢). The maxillary and labial palpi are both three-jointed, the middle

joint being in both cases the shortest (figs. 18, 18 a).

In its simple scutellum this genus agrees with Psilogaster and with some of the

species of Stzlbula (if S. volusus, Walker, is to be regarded as a Stilbula, for the

typical species has the scutellum bifid); but from S. volusus it differs in its simple’

antenne in the male. The ovipositor is stronger built and broader than in any other

genus of Chalcidide known to me.

The only species known was found by Mr. Champion | on fallen timber near the holes

of xylophagous beetles.

ORASEMA.—DIOMORUS. 105

1. Orasema stramineipes. (Tab. V. figg. 20, 20a, 2; 2006, scutellum; 20c,

antenna: Tab. VI. figg. 18, 18a, 4, trophi; 18 ¢, d, e, ovipositor.)

Nigra ; scapo antennarum pedibusque flavis; alis hyalinis, nervis pallidis.

Long. fere 5 millim.

Hab. Panana, Bugaba 800 to 1500 feet (Champion).

Antenne slender, nearly as long as the thorax, densely covered with depressed hair ;

third joint a little longer than fourth. Head closely punctured all over. Antennal

groove moderately broad, dilated suddenly at the bottom. A narrow furrow, slightly

curved in the middle, runs down from each of the antenne, then curves round the

clypeus to the base of the mandibles, which are testaceous. Clypeus somewhat

triangular, transverse at the apex. The furrow is deepest round the clypeus. Thorax

more strongly punctured than the head, the lower and posterior portion of the pleure

striated. A narrow transverse furrow runs across from the tegule, and ‘from this two

much broader sutures proceed to the pronotum, thus dividing the mesonotum into two

somewhat triangular lateral areas and a larger area in front. From the centre of the

transverse furrow a short broad longitudinal one runs to the scutellum. Metanotum

coarsely rugose, almost reticulated in the centre; there is a central area bordered by

keels which converge sharply at the top. Petiole rugose-punctured, thick, shorter than

ventral surface of the abdomen. Coxe blackish or greenish, closely punctured.

Abdomen not laterally compressed, triangular as seen laterally, dilated at at the apex.

Subfam. TORY MINA.

This group contains some of the most elegant forms among the Chalcidide. All or

nearly all have the ovipositor long, and are parasites on Gall-flies, Aculeate Hymeno-

ptera, or Lepidoptera, The group is very numerous in species, especially in temperate

climates; but little is known about the tropical species.

DIOMORUS.

Diomorus, Walker, Ent. Mag. ii. p, 159 (1834); Mayr, Verh. z.-b. Ges. Wien, xxiv. p. 73.

This is a genus of small extent, only two European species being known. They are

parasites on the Aculeate Hymenoptera living in bramble-stems.

1. Diomorus rufipes.

Viridis, cupreo variegatus ; scapo pedibusque rufis ; antennarum flagello nigro, subtus testaceo ; alis hyalinis.

Long. 3 millim.

Hab. Guatemana, Cerro Zunil 4000 to 5000 feet (Champion).

The mesonotum, metanotum, and head are for the most part of a golden coppery

tint; the apex of the abdomen is also coppery. The scape is narrow compared to the

BIOL. CENTR.-AMER., Hymenopt., July 1884. PP

106 HYMENOPTERA.

flagellum, and curved. The flagellum is not much longer than the head in front,

thick, becoming gradually thicker towards the apex, which is acute and compressed at

the side; the fourth, fifth, and sixth joints are subequal, and a little longer than the

succeeding. ‘The face between and below the antenne is distinctly keeled. Head,

pronotum, and mesonotum covered with large and deep punctures, which are distinctly

separated ; the basal two thirds of the scutellum is covered with similar punctures, but

more widely separated; the apical third is very finely and minutely punctured.

Metanotum finely punctured. Pleurze smooth, shining, the edges with scattered punc-

tures. The coxe are closely punctured, much stronger than the apex of scutellum.

Abdomen smooth, shining, impunctate. The posterior femora are thickened, about

one third longer than broad; the middle beneath has a large oval indentation, the

edges of which are very slightly acute, giving the appearance of being toothed. The |

tibie are thick, especially towards the apex, and curved. The long spur of the thick

calcaria is nearly as long as the metatarsus, which is not much longer than the second

joint. The tibie are fuscous on the outer side.

2. Diomorus mayri. (Tab. IV. figg. 17,2; 17 a, 4, trophi.)

Viridis ; scapo antennarum, tegulis, geniculis tibiisque testaceis ; tarsis albidis, antennis nigris, terebra quam

corpus longiore; alis hyalinis; thorace dense punctata; ¢ tibiis posticis fuscis, basi et apice testaceis.

Long. 4-5 millim., terebra 5-6 millim.

Hab. GuateMaLa, San Gerénimo (Champion).

The face is coppery-tinted, and covered with a scattered longish white silvery hair.

The scape reaches to the ocelli, which are placed in a curved line. The annellus is

longer than broad, the apex scarcely transverse; the third joint is a little longer and

thinner than the fourth, the others very slightly shorter, the last conical. Head

coarsely punctured, except the front in the middle below the ocelli, which is very finely

punctured and coppery-tinted. Thorax covered with large, deep, distinctly separated

punctures. Apical third of the scutellum very finely punctured, the basal part punc-

tured like the mesonotum, the two kinds of punctuation being separated by a transverse

line. The middle of the pleure is smooth, shining, and impunctate; the rest and the

breast finely punctured. The metanotum is smooth, shining, impunctate. The abdomen

is compressed, oblong, shining, impunctate, the last segments coppery. |

The coxee and femora are minutely punctured ; posterior femora moderately thick,

and with an indistinct tooth at the apical third. The calcaria is short, not one fourth

of the length of the metatarsus. Wings clear hyaline; the coste glabrous. The male

has the antenne thicker.

Bred by Mr. Champion from the galls of Cynips guatemalensis.

SYNTOMASPIS.—EURYTOMA. 107

-SYNTOMASPIS.

Syntomaspis, Foerster, Hymen. Stud. ii. p. 48.

A genus of small extent, chiefly distinguished from Diomorus by the absence of

teeth from the posterior femora, and from Torymus by the scutellum having a transverse

_ line a little past the middle. The species are parasites on gall-flies.

1. Syntomaspis maculipennis.

ffneo-viridis ; flagello antennarum nigro; geniculis, apice tibiarum tarsisque flavo-testaceis,

Long. 43 millim., terebra fere 4 millim.

Hab. Mexico, North Sonora (Morrison).

Head and thorax (except the pleure behind, where they are smooth, shining,

impunctate, and of a bluish tint) strongly and closely punctured. Scutellum behind

the transverse line much finer and closer punctured than it is in front of it. Front

excavated above the antenne in the middle; the face coppery. Antenne rather slender,

the flagellum getting thicker towards the apex ; its third joint longer than fourth, the

apical compressed. Scape thin, cylindrical, reaching to the lower ocellus. Annellus

longer than broad, thicker and rounded at the apex. Abdomen smooth, shining, coppery.

Coxe rather strongly, femora obscurely, punctured. ‘The coxe are coppery; femora

black, with a slight coppery tint. The posterior tibiz are black, except at base and

apex; the anterior are for the greater part testaceous in front, coppery behind. The

tarsi are of a clear yellow, except that the apices of the joints of the posterior tarsi

are fuscous; the long spur of the calcaria reaches a little beyond the middle. The

ovipositor is as long as the body. Wings clearly hyaline; humerus testaceous; ulna

and cubitus blackish, at the latter is a fuscous fascia. The posterior edge of the basal

segment of the abdomen incised. As with most of the species, the coppery tints are

irregularly distributed over the body.

The present species differs from most of the European in having the scutellum finely

punctured behind the transverse line, that part being generally shining and impunctate.

Subfam. HURYTOMINA.

This subfamily is distinguished by having the body not metallic, the prothorax

large, acute laterally, quadrate, the antennz with not more than eleven joints, and the

abdomen compressed and convex above.

The species are parasites on gall-insects of various orders, so far as is known.

EURYTOMA.

Eurytoma, Mliger, Fauna Etr. ii. p. 127.

This genus is a common one in the Palearctic and Nearctic Regions. We now add

three new species from Central America; two of these (E. aurifrons and E. argentata)

PP 2 ,

108 “HYMENOPTERA.

have the apical abdominal segments lengthened out into a short tail, which clasps the

ovipositor ; they have the petiole very short, and the joints of the club of the antenne

are, in most specimens, completely amalgamated. The other (£. petioliventris) has a

long petiole, and the abdomen semioval and very strongly compressed, much more so

than in any other species I have seen.

E. aurifrons was found by Mr. Champion near the holes of beetles in a tree.

1. Eurytoma aurifrons. (Tab. V. figg. 11,2; 11a, mandible; 114, abdomen

laterally; 11 c¢, antenna; 11d, labium; 11 ¢, ovipositor.)

Nigra ; antennis pedibusque rufis ; alis hyalinis; antennis 8-articulatis.

Long. 5—7 millim.

Hab. GuateMata, Pantaleon (Champion).

The head and thorax are coarsely and closely punctured all over (except on the

posterior part of the mesopleure, which is much less coarsely punctured), and covered

with a golden pile, long on the face, pleure, and metanotum, short on the rest. The

scape of the antenne is a little longer than the two following joints together, the third

is a little shorter than the two following, which are subequal, the sixth a little shorter

than they, the seventh is shorter, the last double the length of the seventh, conical ;

the joints become gradually thicker towards the apex. Legs covered with a silvery

pubescence; posterior coxe finely punctured, and covered with short white hair. The

metanotum is slightly hollowed and very minutely punctured.

2. Kurytoma argentata.

Nigra ; scapo, coxis anterioribus, trochanteribus femoribusque rufis; tibiis tarsisque albidis; antennis 9-arti-

culatis; alis hyalinis.

Long. 5-6 millim.

Hab. GuatemMaa, Pantaleon (Champion).

Differs from £. aurifrons in being smaller; in the antenne being nine-jointed, a

little longer, and in not being so much thickened towards the apex, in being more

pilose, and the last joint a little longer than the seventh, which is a little longer than

the eighth. The pleure are less pilose, as is also the metathorax; the four anterior

coxee are red, and the tibie and tarsi white. The male has, as usual, the antenne

longer and thinner, and covered with long depressed hairs. The abdomen has a long

petiole, and the second segment has a large suture at the base. In both sexes the hair

on the thorax is silvery. The middle of the mesopleure is hollow, very minutely punc-

tured, and without hair.

8. Eurytoma petioliventris. (Tab. V. fig. 12, 2 .)

Nigra; capite et thorace profunde punctatis, abdomine compresso ; tibiarum apice tarsisque albidis ; alis hyalinis.

Long, 3-4 millim.

EURYTOMA.—BEPHRATA. 109

_ Hab. Panama, Bugaba (Champion).

Antenne as long as the head and thorax, moderately thick, becoming gradually and

slightly thicker towards the apex, covered sparsely with hairs, which are depressed and

directed towards the apex; the scape is not much longer than the second and third

joints together; the second less than one half of the length of the third; the third is a

little longer than the fourth, and a little shorter and thinner than the fifth; sixth

shorter than the seventh ; the eighth longer than the latter, compressed, and with no trace

of segmentation. The head and thorax are covered sparsely with short glistening white

hairs, except on the vertex and pronotum; the mesopleure and mesocoxe are finely

and closely punctured. Abdomen shorter than the thorax, oval, and very strongly

compressed. The ovipositor projects a little, issuing from the middle of the abdomen.

Wings glabrous at the border; nervures pallid testaceous.

BEPHRATA.

Antenne 9-jointed, filiform; the joints longish, tapering towards the apex; scape

short, of the length of the ring and the next joint; ring distinct, ovoid ; first joint of

flagellum a little longer than next, the others subequal; they are situated high on the

front, which is deeply excavated between them and the ocelli. Ocelli ina curve.

Eyes bare; the head projects but little behind them. Prothorax large, quadrate,

compressed at the sides. Thorax much longer than broad. Scutellum large. Abdomen

strongly compressed laterally; second segment one half longer than the next, which is

shorter than the fourth ; the fifth is longer than the fourth. Ovipositor concealed; last

ventral segment deeply incised. Legs simple; posterior femora a little enlarged, the

spurs minute. Costal branch one half of the length of the ulna; cubitus half the length

of the costal branch. The costal nervure in the posterior wings is well developed.

In the strongly punctured thorax this genus agrees with Eurytoma; but the structure

of the antenne (in the joints being longer and thinner, and in the last not forming a

club) and of the abdomen is very different. The marginal branch of the ulna is much

longer. In the long strongly compressed abdomen it departs from the other Eury-

tomids entirely.

1. Bephrata ruficollis. (Tab. V. figg. 13,9; 13a, antenna.)

Rufa; antennarum articulis 6°-9", meso- metathorace abdominisque dorso nigtis ; alis fere hyalinis.

Long. 6—7 millim.

Hab. Panama, Volcan de Chiriqui 3000 to 4000 feet (Champion).

The head is punctured, more strongly on the top; the antennal grooves smooth,

shining. Thorax coarsely punctured. Mesopleura smooth, scarcely punctured, a deep

striated oblique groove in the centre. Head and thorax covered with a white glistening

110 HYMENOPTERA.

pubescence. Abdomen longer than the head and thorax, strongly compressed laterally,

the last ventral segment deeply incised. Except at the base, the wings are fuscous-

yellow in tint.

Subfam. SPALANGIINA.

This division is of small extent, only three genera being known, and these contain

but a limited number of species.

SPALANGIA.

Spalangia, Latr. Hist. Nat. des Crust. et des Ins. xiii. p. 228.

Species of this genus are known from the Palearctic Region and North America,

while one of the European species has been recorded from the Galapagos Islands and

another from the Sandwich Islands. As the species, so far as is known, are parasitic

on the house-fly, they have no doubt been introduced there. ‘The species are very

closely allied, and difficult to separate specifically, owing to their being so uniform in

coloration and markings.

1. Spalangia chontalensis. (Tab. V. figg. 14,2; 14a, antenna.)

Nigra, pilosa; tarsis testaceis ; alis hyalinis.

Long. 2-3 millim.

Hab. Nicaragua, Chontales (Janson).

Antenne 10-jointed ; the second joint one fourth longer than the third, the third and

fourth are longer than broad, the fifth to ninth are not much longer than broad, the

tenth is nearly as long as the three preceding together. The head and thorax are

covered with a sparse pubescence and with shallow punctures. The centre of the

mesonotum is shining, smooth ; scutellum alutaceous, and with a longitudinal furrow

in the middle. The metanotum, pleura, and sternum are smooth and shining for the

most part. Abdomen smooth, shining, impunctate, shorter than the thorax; the last

segment acute; the apical segments are covered with a pale pubescence.

PARALASTHIA.

Head elongated, broad, produced in front into a spear-head process, the apex of

which is blunt, and at its base produced into a blunt tooth-like process. Eyes small,

oval, situated on the sides. Vertex with a wide and deep furrow extending from behind

the ocelli to the antenne and carinated in the middle, the keel running down to the

centre. Mandibles very large, three fourths of the length of the head, curved, bidentate.

Antenne 10-jointed, clavate, situated a little below the middle of the head; scape

-PARALESTHIA, 111

shorter than the first two joints of the flagellum, the first joint shorter than the

second, fourth and fifth shorter and thicker; the rest become thickened towards

the apex. Prothorax large, a little broader than long, distinctly separated from the

mesothorax, the sides scarcely straight, transverse behind, rounded and narrowed in

front. Mesonotum rather flat above, the scutellum not clearly defined. Metanotum

comparatively large, closely amalgamated with the mesonotum. Petiole long, curved,

broader at the base than at the apex, round. Abdomen ovoid, flat, contracted before and

behind; second segment longer than the next, fourth much longer than any of the

others ; apical a little shorter than the third. Ulna shorter than the marginal branch,

(which is prolonged a little beyond the cubitus); at its junction with the ulna is a

thickened spot of hairs; the marginal branch is provided with projecting hairs; the

margins of the wings with long cilia. Coxe large, thickened, widely separated;

femora stout; tarsi longer than the tibie.

The female has a stout laterally compressed ovipositor, which is about half the length

of the abdomen. The head over the mouth is broadly incised, the edges of the incision

being tooth-like; the front below the antenne is produced into a broad keel, which

overhangs the mouth-region, terminating in a blunt thick tooth.

The affinities of this genus are clearly with Theocolar, Westw., with which it agrees

in the structure of the thorax and abdomen and of the wings; but the enormous

development of the mandibles, the very deep and long suture on the head, and the

greater development of the basal abdominal segments sufficiently differentiate the two.

1. Paralesthia mandibularis. (Tab. V. figg. 15, 9; 154a,3; 158, head of

é; 15¢, antenna of 2; 15c¢, antenna of g; 15 f, head of ¢.)

Nigra, nitida, fere glabra; ore, scapo antennarum tarsisque testaceis; geniculis, trochanteribus tibiisque

piceis ; alis hyalinis, fascia substigmatali fusca.

Long. 4 millim.

Hab. PANAMA, Volcan de Atitlan 2500 to 3500 feet (Champion).

Antennee not much longer than the head and mandibles. Sides and upper part of

pleure slightly punctured and semiopaque ; the rest very smooth, glossy, shining, and

piceous ; the sides of the head and prothorax are also piceous. The tibie are closely

covered with a fuscous pile. The scutellum laterally are faintly longitudinally

striated. Metanotum shining in the centre, obscurely punctured and semiopaque at

the sides.

Subfam. AX/MINA.

Antenne 13-jointed, inserted in the middle of the face. Prothorax large, not transverse

in front. Head with the front produced into large irregular horn-like tubercles. Meta-—

pectus armed with spine-like tubercles. Petiole armed beneath with a curved spine.

112 . HYMENOPTERA.

Second segment of abdomen longer than all the others together. Four anterior tibie

with one minute spur; posterior curved, terminating in a stout curved spine. Posterior

cox elongated; posterior femora thickened, minutely toothed. Body metallic.

The form'of the head would ally this subfamily to Dirrhinus, Dal., a genus which is

placed by authors in the Chalcidina; but the South-American genus can scarcely be

placed there, unless the characters given by European authors to define the Chalcidina

are much extended. The Aximine, in fact, differ from that group in the body being

metallic, the prothorax much more strongly developed (it being constructed very much

as in Eurytoma), and the ovipositor is as long as the abdomen. In the structure of the

posterior legs it agrees with the Chalcidina, but the thickened femora and the strongly

spined tibie are not peculiar to them. The only other group that it could be placed

in is the Pteromalina; but the form of the head and prothorax is quite different.

HONTATLIA.

Antenne 13-jointed, inserted below the eyes; second joint a little shorter than third.

Head longer than broad, triangularly incised behind, above the antenne deeply exca-

vated, produced at the sides into two large tubercles, of which the uppermost is the

largest; they are sharply pointed, and the space between them is semicircular. Mouth

almost touching the anterior coxe. Ocelliinatriangle. Eyes almost round, margined.

Prothorax large, transverse behind, produced in the middle in front so as to fit into the

incision in the head; distinctly separated from the mesothorax. Mesonotum with two

sutures, and a transverse one at the base of the scutellum, which is oval and slightly raised,

and not separated by sutures from the mesonotum. Metathorax flat, longer than broad,

with distinct keels. In front of the posterior coxe the sternum is produced, on each

side, into a blunt tooth. Petiolea little shorter than the metathorax, carinated beneath,

armed with a curved thick spine. Abdomen fusiform, second segment longer than the

succeeding together; the rest subequal. Ovipositor broad, compressed, a little shorter

than the abdomen. Posterior cox large, a little longer than the femora, which are

thicker, oval, a little longer than broad, and bluntly keeled on the lower side, where there

is also a blunt tooth at the base. Tibiz curved, a large thick curved spur at the apex;

anterior apparently without spurs. Middle femora thickened at the apex. Ulna straight,

produced along the costa; cubitus a mere thickening of the nerve. The metatarsus is

shorter than the second joint, it being not much longer than the third; the apical is

the longest, and is thickened towards the apex. Ocelli in a triangle. The mouth,

when the head is not raised, touches the prosternum. The horns on the head are

directed straight in front.

The genus Arima, Walker, from Brazil, comes nearest to Hontalia of the described

genera, but is sufficiently distinguished from it by the eleven-jointed antenne and

simple posterior femora.

HONTALIA. 113

1. Hontalia cerulea. (Tab. VI. fig. 1,¢; 1a, head from the side.)

Cerulea ; antennis nigris, tarsis, femoribus tibiisque anterioribus rufo-testaceis; alis hyalinis (9 ).

Long. 7-8 millim., terebra 4 millim.

Hab. Nicaraava, Chontales (Janson).

Head and thorax minutely pilose, covered with large, roundish, distinctly separated

punctures; the mesonotum in front and a longitudinal narrow line on scutellum

smooth, shining, impunctate. A large oblique space on the mesopleura impunctate,

finely striated, more strongly at the extreme apex; posterior cox obliquely striated,

punctured at the base. Metanotum finely punctured, and with six keels. Petiole

alutaceous, with four keels. Ovipositor covered with short white hairs at the apex.

Antenne as long as the thorax, covered with a microscopic down; the joints not

clearly separated, becoming gradually thicker towards the apex, which is conical. The

anterior femora and tibie are darkened towards the middle.

2. Hontalia ruficornis. (Tab. VI. fig. 2,9; 2a, antenna; 26, head; 2, abdo-

men.)

Nigra; antennis, femoribus tibiisque anterioribus rufis; tarsis pallide testaceis ; alis fumatis, albo fasciatis.

Long. 4-5 millim.

Hab. Panama, Bugaba 800. to 1500 feet (Champion).

Antenne a little shorter than the thorax, thickened towards the apex, where the

joints become also shorter; second joint a very little shorter than the third. Scape not

reaching the top of the tubercles. Frontal tubercles large, broad, projecting above the

eyes and in front ; the upper part is sharply pointed, behind it curves down on either

side to near the middle, the sides being margined and enclosing a slightly hollow space ;

from the middle it descends gradually to the vertex; in front its slope is more perpen-

dicular, and towards the middle of the eyes it curves out into a tooth, from this

descending with a slight inward curve to the base of the antennz. On each side of

the mouth the head projects into a blunt tooth. The head (especially in front) is

coarsely punctured, and covered with a short silvery pubescence. In front the pronotum

is smooth, shining, impunctate, at the sides obscurely punctured; above coarsely

punctured, except a broad, smooth, shining, impunctate transverse band. Mesonotum

and scutellum coarsely punctured; in the front of the former is a narrow, shining,

transverse furrow. Pleure coarsely punctured, except a hollow space below the tegule,

which is finely striated. In the centre of the metanotum is a large area, truncated

behind, rounded in front, where it ends a little beyond the middle, and from its apex

there runs a straight keel to the petiole. On either side of this is a similar field, but

sharper-pointed at the apex, and from their apices a keel runs also to the petiole.

Outside these keels, and close to the edge, is a keel which runs round the border of

the metanotum ; at its basal third the metathorax projects into a blunt tooth. The

BIOL. CENTR.-AMER., Hymenopt., July 1884. QQ

114 HYMENOPTERA.

inside of these fields is punctured. The metasternum is hollowed on either side,

carinated in the centre, and finely striated. The petiole is a little longer than broad ;

on each side is a keel close to the edge, which is itself margined ; in the centre are two

narrower keels, enclosing a punctured space; the portion enclosed by the lateral central

keels is smooth; at the end of these keels is a transverse furrow. On the lower side of

the petiole is a curved spine; the second abdominal segment is much larger than all

the succeeding together; the three following are of equal size, the next larger, the

following smaller but larger than the third. The anterior coxe are coarsely punctured

on the outer side, posterior finely punctured and striated. ‘The posterior femora are

finely punctured ; beneath they are very finely and closely toothed, the teeth only

being visible with a strong glass; at the base is a very indistinct tooth. At the end

of the stigma is a round white spot, and there is another opposite it; there is a long

narrow white stripe along the costa, and the base is more or less hyaline.

I think this isa male; but I am not quite sure, as the apical abdominal segments

are retracted. Ifa female it would differ from H. cwrulea (which I have regarded as

the type of the genus) in having the ovipositor retracted.

Subfam. EUPELMINA.

This subfamily possesses a well-marked peculiarity in the strongly dilated middle

tarsi and in the large stout spurs on the same legs. In the possession of a large, stout

spur on the middle tibie the Encyrtide agree with them, but differ otherwise in the

disk of the mesothorax being bordered, and in the mesothcrax not being contracted

before the scutellum.

Comparatively few species have been described; they are principally from the

Nearctic Region; but species are known from Australia, the Sandwich Islands, North

and South America. The European species have been referred to six or seven genera,

mostly separated from each other by slight differences in the form of the legs, head,

and the manner in which the antenne are inserted. To arrange the Central-American —

species in the same lines would require the creation of several new divisions. I have

only done this in three cases; for with the limited material at my command (all of the

species being represented by one sex only, and mostly by single specimens) I experience

considerable difficulty in deciding as to what characters are of generic value, a difficulty

increased by the fact that such characters which, on first examination, might be regarded

as useful in generic separation, are found to merge into mere specific differences when

traced through several species. A revision of the genera of Neotropical Eupelmina

must therefore be deferred until the accession of more complete material shall enable

us to come to more definite ideas as to the limits of the genera.

EUPELMUS. 115

EUPELMUS.

Eupelmus, Dalman, Kong]. Vet. Acad. Handl. ii. p. 378 (1820).

In having the front ridged near the insertion of the antenne the species I have

included here do not agree with one of the principal characters given by Foerster

(Hymen. Stud. ii. p. 31) to define Hupelmus, and none of them have the second abdo-

minal segment incised. They, however, agree tolerably well with Eupelmus generally.

The species are mostly black, more or less tinted with metallic green; the wings dark

with hyaline fascie. It is difficult to count the number of joints in the antenne, so

closely are they united together; but the majority would appear to have them eleven-

jointed. Possibly there may be three joints in the club.

I have divided the genus into sections, which may hereafter be raised into genera.

I. Antenne with the scape strongly compressed laterally, with a knife-like edge on the

lower side, where it is much thinner than on the back. Antennal grooves short,

broad. Ocelli not touching the groove. Flagellum thick, compressed, densely

pilose, first joint a little longer than the neat, the others subequal ; there are eleven

joints in all. Thorax raised into a sharp ridge on the back. Ovipositor scarcely

projecting. Abdomen somewhat depressed in the centre above, longer than the

head and thorax together.

1. Eupelmus compressicornis. (Tab. VI. fig. 12, 2 .)

Nigro-viridis, pilosus; antennis nigris; pedibus testaceis fusco maculatis ; alis subfumatis.

Long. 4 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

The antenne are shorter than the thorax and abdomen, thick, compressed, covered

with a close pile, and they taper in thickness towards the apex; the joints (except

the first of the flagellum) are broader than long; the first of the flagellum is a little

longer than the succeeding, and is narrower at the base than at the apex. The head

is punctured, and covered with a short pale pubescence. The thorax is uniformly

alutaceous, almost punctured. The abdomen, except at the apex, is smooth, shining,

impunctate; the apex is covered with shallow punctures. The spur on the middle leg

is two thirds of the length of the basal joint of the tarsus. The head is green, some-

what coppery on the front; thorax dull black; apex of the abdomen green, the rest

bluish black ; the wing-nervures are yellowish testaceous; the femora, tibiz, and tarsi

are suffused with fuscous.

116 HYMENOPTERA.

TI. Antenne twelve-jointed. Scape compressed, sharp on the lower side; first joint of

the flagellum (after the ring, which is longer than broad) much longer than the

second, which is a little shorter than the third ; the rest become shorter and thicker

towards the apex. Grooves of the antenne broad, short, forming a hollow above

the antenne, not reaching near the ocelli ; vertex a little depressed at the eyes, which

are oval and reach to the extreme back of the head and project beyond it laterally.

Front before the antenne bluntly keeled. Thorax flat above; the centre of the

mesonotum somewhat depressed. Ovipositor very slightly projecting.

2. Eupelmus gigas. (Tab. VI. fig. 9,2; 9a, antenna.)

Niger, viridi et cupreo tinctis; flagello antennarum (apice excepto) pedibusque rufis; alis fumatis, albo

fasciatis. .

Long. fere 9 millim.

Hab. Panama, Bugaba (Champion).

Antenne situated a little above the antennal scape, strongly compressed laterally,

dilated and hollowed at the side, double as long as broad. Flagellum thick, becoming

thicker towards the apex, densely covered with a white pile. Head punctured, pilose.

Antennal grooves proper short, broad, ridged on the outer side, converging above into

a hollow, which does not reach near to the ocelli. Eyes converging at the top,

projecting beyond the back of the head, which is margined on the outer side; the eyes

project above the vertex. Prothorax small. Mesonotum flattish, not raised above the

scutellum, centre depressed, with a triangular raised part at the base, the depression

bordered with a margin, indistinct at the base, clearly defined towards the scutellum ;

on the outside of the mesonotum are two narrow keels, one on the top, the other a

little way down the side and running into the tegule; there is a transverse, rather

wide, groove in front of the scutellum. Metanotum with two wide grooves enclosing a

slightly raised part in its centre, and which is widest at the apex. Mesopleura in front

covered with longish white hair, this part being more projecting than the larger hind

portion, which is more opaque, and bears only a microscopic pubescence. Abdomen

longer than the head and thorax together, smooth, shining, more or less coppery, the

apex with a few round obscure punctures, and bearing (as do also the sides) a few

longish hairs. Ovipositor shortly projecting, the sheath densely pilose. The coxe are

black, more or less green at the base, and covered with a longish hair; the rest of the

legs are densely covered with a close pale pile; the posterior femora above, the middle

tibiz and hind tarsi at the apex, more or less fuscous at the base on the lower side and

at the apex. The fore wings are obscure hyaline, more or less infuscated; and in front

of the cubitus, and close to the margin, is a longish hyaline space; the hind wings are

lightly infuscated.

The largest of the species known to me.

EUPELMUS. ~ 117

III. Scape of antenne cylindrical, flagellum becoming gradually thicker from the base

towards the apex. Antennal grooves reaching close to the ocelli, but very shallow

on upper half. Pronotum triangular above, flat, with a deep groove in the middle.

Mesonotum flat or ridged. Abdomen convex above and beneath, the sides a little

compressed. Ovipositor retracted. Wings abbreviated. Body testaceous.

3. Eupelmus testaceus. (Tab. VI. fig. 10,2; 10a, antenna.)

Rufo-testaceus; apice antennarum nigro, abdominis basi alba, capite cupreo variegato; alis fusco-brunneis,

albo fasciatis.

Long. 6-7 millim.

Hab. Panama, Volcan de Chiriqui 3000 to 4000 feet (Champion).

Antenne almost bare, and becoming thickened towards the apex; the third and fourth

joints subequal. Head finely and closely rugose, rust-coloured, except in the centre,

which is blackish. The mouth-region is greenish black. Eyes chocolate. Head

sparsely pilose. Thorax smooth, shining, and covered with a black pubescence. The

prothorax above is longer than broad, obsoletely punctured, and with a longitudinal

furrow in the centre of the pronotum, which is flat. The mesonotum is light testaceous,

impunctate; the scutellum and metanotum reddish testaceous and minutely punctured,

especially the metanotum, which is flat, and bears a well-marked keel in the centre.

Pleure finely punctured, black along the edges, reddish testaceous for the rest. Abdo-

men a little longer than the thorax; the basal third smooth, shining, the rest finely

punctured ; the greater part of the second segment is white. ‘The wings are scarcely

longer than the thorax; they are brownish; in front of the middle is a white band, |

which extends right across; there is a small white mark (longer than broad) at the

cubitus close to the costa; these white parts are surrounded with a fuscous border, and

the apex of the wing is also fuscous.

4, Kupelmus brevipennis.

Rufo-testaceus ; capite cupreo, antennarum apice, abdominis basi, coxis femoribusque nigro-maculatis ; alis

fumatis, basi hyalinis.

Long. 42 millim.

Hab. Panama, Volcan de Chiriqui 3000 to 4000 feet (Champion).

The head is coppery, as in E. testaceus, and otherwise agrees with that of the latter,

but the antenne are somewhat shorter. In the form of the prothorax the only difference

is that in E. brevipennis it is quite flat, this being also the case with the mesonotum.

The metanotum is shorter, and there is no distinct central keel. ‘The abdomen is shorter

than the thorax. Thorax very finely punctured. Abdomen smooth, shining. The four

posterior coxe are largely marked with black; the posterior femora are broadiy lined

with the same colour above; the base of the abdomen is longer, black ; and there is an

obscure white ring on the second segment. The wings are narrow, shorter than the

mesothorax; the basal half is hyaline, the apical brownish.

118 HYMENOPTERA.

IV. Lyes bare, head scarcely projecting behind them. Antenne inserted in the middle of

the face. Antennal grooves distinctly ridged, narrow. Head retreating behind

the eyes. Antennal scape narrow, of nearly equal thickness throughout. Pronotum

hollow above, a longitudinal suture in the centre. Scutellum narrow at the base.

Abdomen narrow at the base, becoming dilated towards the apex ; seeond and third

segments longer than the others. Ovipositor hidden, or exserted. Middle tarsi

dilated, setose on the underside. The mesonotum flat or elevated into a hump.

Antenne 11-jointed, inserted in the middle of the face; two rings, the first longer

than the second, broader at the apex than at the base, second ring a little longer than

broad ; first joint of the flagellum longer than the next, second and third subequal,

longer than the fourth, which is of the same size as the fifth; the joints of the club

indistinct, its apex acute. Head large, broader than the thorax, slightly convex behind,

still more slightly concave in front. Eyes bare, oval; ocelli in a curved line. Front

slightly hollow; there is no antennal suture. Prothorax transverse, small, the sides

rounded. Mesonotum with the sutures well defined. In front of the scutellum is an

almost straight transverse carina; base of scutellum broad, truncated; apex rounded,

broader than the base. Abdomen long, semisessile, tapering towards the apex, which

is often cylindrical ; the segments do not differ much in length. Legs slender. Spurs

on front tibize almost obsolete; on the middle long, stout; on the posterior short, and

two in number. Marginal branch three fourths of the length of the ulna. The

following table is a synopsis of the species of Group IV. :—

1 (16). Mesonotum elevated into a ridge.

2 (11). Wings smoky, with white fasciz ; legs mostly black.

3 (4). Antenne entirely testaceous . . . . . . . . . . . « « Cestaceicornis.

4 (3). Antenne for the most part black.

5 (8). Base of abdomen black ; scape of antenne black, thick, compressed,

sharp on the lower side.

. Wings hyaline at the base, with a small fuscous spot in the centre of

the hyaline part; middle of the flagellum testaceous ; spurs black geniculatus.

7 (6). Base of the wings entirely hyaline ; antenne entirely black ; spurs

ony

vV—_—

~——

white... 1 6 we ee ee ee ee www ee abbispina.

8 (5). Base of the abdomen white; scape testaceous, cylindrical, not com-

pressed.

9 (10). Wings with two white spots in middle, hyaline at the base . . . bimaculatus.

10 (9). Wings with only a narrow curved fascia in the middle ; base smoky . gracilis.

11 (2). Wings hyaline; legs testaceous.

12 (18). Thorax mostly red . . 2... 1. ew ee ew ee ee erythrothorax.

18 (12). Thorax black.

14 (15). Ovipositor as long as the abdomen; legs testaceous . . . . . Ayalinipennis.

15 (14). Ovipositor but very shortly projecting; legs yellow . . . . .« flavipes.

EUPELMUS. 119

16 (1). Mesonotum flat, not elevated.

17 (18). Wings with two fascie inthe middle . . . ... .. . . petiolaris.

18 (17). Wings with only one curved fascia in the middle.

19 (20). Upperside of the base of the abdomen white; sheath of the ovi-

positor black . . . . . « eingulatus.

O (19). Upperside of the base of the abdomen black ; ; " sheath of the ovi-

positor testaceous . . . . . . - ss - + « « « . fasciiventris.

5. Eupelmus testaceicornis.

Niger, viridi et cupreo tinctus; antennis (apice excepto), geniculis, tibiis tarsisque anticis et terebra testaceis ;

alis fumatis, basi et apice hyalinis.

Long. 5 millim.

Hab. Panama, Bugaba (Champion).

Antenne as long as the thorax and abdomen together ; scape thin, becoming a little

thicker towards the apex; flagellum becoming gradually thickened towards the apex,

last joint compressed laterally. Head closely punctured, metallic, covered with a close

white pile; antennz placed below the level of the eyes; antennal grooves deep, the

triangular space which they enclose is depressed in the centre. Thorax obscurely

punctured, covered with a white depressed pubescence, except on the mesopleura,

which is almost glabrous, and less shining than the rest. The mesothorax rises into a

sharp elevation, with a steep slope on the scutellar side. Abdomen narrow at the base,

broad and rounded at the apex; base smooth, shining; apex opaque, pilose, and pitted

with round shallow punctures; the second segment has a slight incision in the centre

above ; it is longer than the third, which is double the length of the fourth. Ovipositor

shortly projecting, the sheath thick, three fourths of the length of the last segment.

The thorax has more green tints than the abdomen, which is almost entirely black.

Legs longish, densely pilose.

The slightly incised second abdominal segment would place this species in Lutnes ;

but I cannot detect any trace of pilosity on the eyes.

6. Kupelmus geniculatus.

Niger; antennarum flagello medio, scapo apice terebraque testaceis; pedibus posterioribus basi geniculisque

albis; alis anticis fumatis, albo maculatis.

Long. 4 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

The head, thorax, and apical half of the abdomen are alutaceous, and covered with

a white pubescence, that on the head short and close, on the thorax longer and more

scattered, on the abdomen still longer and thinner, especially at the apex. ‘The meso-

pleuree above in front finely punctured, and with a coppery tint; below, close to the

breast, smooth and shining. Mesonotum margined throughout, the centre hollow,

slightly carinated in the centre. The tibiz and tarsi are covered with a close pubes-

120 HYMENOPTERA.

cence, the femora with a longish white hair; the anterior knees are only slightly marked

with white, the four posterior broadly at the base of the tibie and the apex of the

femora ; the base of four posterior coxe black. The antenne are pilose, subclavate, thick,

not much longer than the abdomen; the scape is compressed on the lower side, broad,

rounded at either end, the side double the width of the back; the scape at the top

testaceous, as is also the apex of the fifth and sixth to the eighth joints; the third joint

is scarcely one half of the length of the fourth, which is about one half longer than the

fifth ; the latter is not much longer than the sixth, and is thinner than it ; the seventh to

the ninth are not much longer than broad, the club shorter than the three preceding,

compressed at the sides. The base of the wings is mostly hyaline, and in the middle of

this clear portion is a somewhat square mark touching the ulna; at the end of the

ulna is a larger fuscous mark, broad above, narrowed below; in front of the cubitus is

a broad, triangular (looked at from the apex of the wing) cloud, which stretches from

one side of the wing to the other, its sharp end pointing to the base of the wing, and

almost running into the hyaline space at the base; the nervures are bright testaceous,

except where touched by the fuscous portions of the wings.

7. Eupelmus albispina.

Niger, pilosus, subnitidus; tarsis terebraque testaceis; pedibus posterioribus basi, tibiarum posticis dimidio

basali calcaribusque albis; alis fumatis, albo maculatis.

Long. 4—5 millim., terebra 1 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Head minutely punctured, the thorax alutaceous, except the pleure; abdomen

smooth, shining, and with a steel-blue tint. The middle spurs are as long as half the

metatarsus; the posterior tarsi are testaceous only at the base. The base of the fore

wings is almost hyaline, and in front of the cubitus is an oblique narrow hyaline stripe.

8. Eupelmus bimaculatus.

Hab. Panama, Bugaba (Champion).

Similar to £. petiolaris in the coloration of the body and legs, but differing from

that species in the following points :—The antennal grooves are deeper, and their outer

margin is more distinctly keeled, being separated from the eyes by a slight groove;

the mesothorax, instead of being almost flat, rises sharply to a peak to the base of the

scutellum, which has an almost perpendicular slope. The abdomen broadens out con-

tinuously from the base, which does not form a neck. The basal joint of the middle

tarsus is thinner, and the long spur is as long as it, and quite black; not shorter than

it, and testaceous, as in LE. petiolaris. The base of the flagellum is testaceous (but of a

darker shade than the scape), while in E. petiolaris it is only piceous.

EUPELMUS. 121

9. Kupelmus gracilis.

Niger; antennarum scapo tarsisque anterioribus testaceis; abdominis basi alba; alis fumatis, bifasciatis..

Long. 4 millim.,

Hab. Guatemaua, Mirandilla 1700 feet (Champion).

Head covered in front with a white pubescence; mesonotum with shorter, almost

fuscous pubescence; the legs with a microscopic down; apex of abdomen with mode.

rately long fuscous hair. The head is alutaceous, finely punctured; mesonotum:

alutaceous, pleure half shining, faintly alutaceous. Abdomen smooth, shining. The-

antenne are a little longer than the head and thorax; scape curved; flagellum rather

thin to the middle, where it gradually thickens towards the point; the two last joints:

form a distinct flattened club; the joints are covered with a pale microscopic pile. The.

anterior legs are fuscous black, posterior coxe green. ‘The ovipositor is one third of

the length of the abdomen, black, the apex testaceous. ‘The wings are shorter than

the abdomen, and marked with an obscure white band before the ulna, and a larger,

broader, curved one in front of the cubitus; the apices lighter in colour.

10. Eupelmus erythrothorax. (Tab. VI. fig. 11.)

Niger; pronoto purpureo, antennarum scapo, thorace pedibusque rufis; alis flavo-hyalinis,

Long. 6 millim.

fab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Antenne a little shorter than the abdomen, moderately stout, becoming gradually.

thickened towards the apex; scape curved; third joint scarcely one fourth shorter than

the fourth and as long as the fifth; the fifth is shorter than the sixth, seventh and

eighth shorter and not much longer than broad, ninth and tenth broader than long ;,

club distinctly three-jointed. The head is alutaceous, finely pubescent, the front

bluntly keeled. Thorax smooth, shining. Mesonotum margined at the sides all

round ; the middle hollowed throughout to the scutellum; a raised, long, triangular

part at the base is continued as a narrow keel to near the end; the sides of the

depression are not margined; outside the hollow the mesonotum has a bDlistered.

appearance. ‘The metanotum and sternum are covered sparsely with longish white

hairs. The abdomen is more than double the length of the thorax, incised beneath.

at the base, the ventral surface margined in the middle; the apex produced into a

blunt point; the apical segments longer than the middle; the sixth semicircular at.

the apex, and not much longer than the apical. The back of the abdomen is black,

the sides at the base and the base above greenish blue; the posterior coxe are bluish..

11. Eupelmus hyalinipennis.

Niger; antennis nigris; pedibus intermediis totis, femoribus posticis apice, tibiis tarsisque testaceis; tibiis

tarsisque anticis sordide testaceis ; alis hyalinis.

Long. fere 5 millim,

Hab. Guatemaa, Pantaleon 1700 feet (Champion).

BIOL. CENTR.-AMER., Hymenopt., dugust 1884.

Pl. g2

1223 HYMENOPTERA.

Head bright green, except behind the ocelli and round the mouth. Thorax black,

variegated with green. The abdomen black, variegated with green and coppery tints,

especially on the back; the mesopleure golden. Head covered with large round

punctures; the vertex behind the ocelli alutaceous. The thorax finely alutaceous;

abdomen smooth and shining; the pleure very finely punctured; breast alutaceous and

with a minute irregular punctuation. The head, mesonotum, and breast covered with

short, white, glistening hairs; the sides and apex of abdomen have a few scattered

hairs. The antenne and ovipositor almost glabrous; the scape of the antenne has a

greenish hue. The anterior tibiz are more or less fuscous green above and beneath ;

the anterior and middle tarsi fuscous for the most part; the posterior coxe and basal

two thirds of the femora are green. The ovipositor is nearly as long as the abdo-

men and deep black.

12. Kupelmus flavipes.

Viridis ; abdomine antennisque nigris; pedibus flavis, coxis femoribusque posticis fere totis nigris; alis

hyalinis.

Long. 3 millim.

Hab. Guaremaua, Mirandilla 1700 feet (Champion).

Head above smooth and shining, front and oral region finely punctured; face covered

with a white pubescence. The thorax has a fine, almost obsolete punctuation; the

mesonotum shining; pleure semiopaque and glabrous; the mesonotum and breast with

a white pubescence; the base of the abdomen is shining, metallic, the apex opaque,

obsoletely punctured. The pronotum curves downwards from the top towards the head,

so that the centre is slightly hollow; it is margined at the top. The sides of the meso-

notum are margined, but not very clearly; the centre is hollowed to the scutellum,

where there is a distinct border; in front there is the usual raised triangular part with

the keel behind. Abdomen longer than the head and thorax; the apex broadly

rounded, but narrower than the middle; the last segment shorter than the preceding.

The antenne are pilose, thin to the middle, from that becoming gradually thickened ;

the third joint a litile longer than the fourth. The terebra is pilose and as long as the

last segment above. The face, pleure, and the greater part of the abdomen are coppery

black. The base of abdomen is brassy and bluish, and the mesonotum has the green

more or less tinged with coppery tints.

13. Eupelmus cingulatus.

Niger; scapo antennarum, tarsis anterioribus femoribusque posterioribus apice testaceis; abdominis basi

cingulo albo; alis fuscis, albo maculatis.

Long. 4—5 millim.

Hab. Guatemaa, Pantaleon 1700 feet; Panama, Caldera 1200 feet (Champion).

Head, thorax, and abdomen (except at the base, which is smooth and shining) aluta-

EUPELMUS.. | 123

ceous, and covered with short, white, depressed hairs, except on the posterior part of

the mesopleure. The face is closely covered with white hairs; scutellum with a few long

white hairs; and there are a few long hairs along the edge of the mesonotum. The .

apical abdominal segments are covered with long white hairs along the edges of the.

segments, beneath with black hairs. The legs are covered with a white pubescence.

The mesonotum is margined along its whole extent, and with a V-shaped furrow; but

there is no transverse furrow in front of the scutellum, which is depressed. The wings

are subhyaline at base and apex; and there is a white band in front of the cubitus;

this band does not stretch across the wings, and is broadest in front. The head, thorax

(especially the metathorax), and base of abdomen have a steel-blue reflection.

14. Kupelmus petiolaris.

Hab. Guatemaa, Pantaleon 1700 feet (Champion).

In general coloration this species agrees with EL. cingulatus, but it is slightly shorter

and narrower. The thorax is more shining, less alutaceous. The second abdominal

segment is longer, narrower, double as long as broad, and distinctly separated from the

rest of the abdomen by its narrowness, the apical part bulging out abruptly from it; it

is entirely white, except a narrow black band in its middle. The apical portion of the

abdomen is more shining than in K. cingulatus. ‘The wings are not byaline at the apex,

and at the cubitus there are two white fascia, one on either side of the wing, that close

to the cubitus itself being the largest. The knees, anterior tarsi, and lower side of

the hind femora are obscure testaceous.

15. Hupelmus fasciiventris.

Niger; scapo antennarum, abdominis apice, terebra tarsisque rufo-testaceis; apice coxarum, abdominis basi

subtus et femoribus posterioribus subtus albis; alis fumatis, albo fasciatis.

Long. 6 millim.

Hab. Panama, Bugaba (Champion).

Scape of antennz longish, curved; flagellum becoming thickened gradually towards

the apex; first joint (the ring) double as long as broad, second about one fourth longer

than the third; all the joints covered with a close white pile. Head opaque, for the

most part covered with a matted pubescence, punctured finely. Antennal grooves broad,

comparatively shallow, not reaching to the ocelli.

Closely related to E. cingulatus, but the white on the second abdominal segment is

- only on the sides and beneath; the abdomen is longer compared to the thorax; the

last segment longer, not so hairy, and more distinctly punctured ; ovipositor longer, its

sheath testaceous ; the white band at the cubitus is, if any thing, narrower, whiter, and

more clearly defined. The four posterior trochanters are white, as are also the base of

the femora, which are more or less obscure testaceous on the lower side. The antenne

RR 2

124 . HYMENOPTERA.

are more pilose than they are in Z. cingulatus, and not so much thickened towards the

apex. The antennal grooves are wider and deeper.

BRASEMA.

Eyes hairy, converging at the top. Front hollow, and with a somewhat triangular

projecting space above the antenne ; the hollow is scarcely ridged at the bottom. Head

not dilated at all behind the eyes. Mesothorax raised into a peak, above the centre of

which depressed. Mesonotum hollow in the centre; scutellum narrow at the base. |

Abdomen long, narrower than the thorax; segments two to six subequal, transverse ;

apical segment shorter and narrower. Ovipositor as long as the two last segments

together. Middle tarsi dilated, setose beneath.

The short, not incised, second abdominal segment distinguishes this genus at once

from Lutnes; the hairy eyes from Eupelmus.

1. Brasema brevispina.

Nigra; trochanteribus, coxis intermediis, geniculis, tibiis intermediis, posticis medio tarsisque testaceis; alis

hyalinis.

Long. 4 millim., terebra fere 1 millim.

Hab, GuateMa.a, Pantaleon 1700 feet (Champion).

Head opaque, slightly punctured, the face covered with a white pile. Thorax

alutaceous; pilose in front, behind, at the sides above, and on the sternum; pleure

glabrous, finely punctured. ‘The sides and apex of the abdomen are covered with a

white pubescence ; apex very minutely and sparsely punctured, almost opaque; the

base more shining. Mesonotum distinctly margined all round, the border going round

the scutellum ; the centre deeply hollowed, the sides of the hollow having a well-defined

border, which becomes better marked as it reaches the outer border at the scutellum;

the centre of the hollow is raised into a somewhat triangular posture, which is prolonged

behind into a narrow keel. On the thorax, above the fore wings, are two tubercles at.

the end of the central carina of the mesonotum and close to the end of it, one close to

the carina, the other below it. The abdomen is narrower than the thorax, longer than

the thorax and the head together, the centre depressed, the apex bluntly pointed ; apex

of the terebra testaceous. The antenne are a little shorter than the abdomen, rather

thin, becoming thicker towards the apex; the scape is curved, finely keeled on the lower

side ; the third joint is a little shorter than the fourth and nearly as long as the fifth,

the fifth a little longer than the sixth.

LUTNES.

Eyes hairy, converging above. Antenne inserted in the middle of the face. Front

hollow below the ocelli, projecting between the antenne, ridged on the lower side.

Scutellum narrow at the base, almost pear-shaped. Abdomen subsessile; second

LUTNES. 125

segment as long as all the others together, deeply incised at the apex; third segment

incised ; fourth also incised, but not deeply ; fifth segment as long as the fourth, finely

punctured. Ovipositor longer than half the abdomen. Spur on anterior tibie stout,

curved, one third of the length of the metatarsus; that on the middle tibiz two thirds

of the length of the metatarsus, which is thickened and setose on the lower side, and

with the second joint also thickened; posterior tibial spur almost obsolete. Wings

hairy. Mesonotum with two carine along the middle, which is hollow. A suture

separates the pleura from the sternum.

In L. crassicornis the mesothorax is flat along its entire extent, but in L. dr omedarius

it rises gradually from the pronotum to a peak, descending more abruptly on the other

side, the scutellum thus not being on a level with the metanotum, but sharply raised

above it. In other respects the species agree.

The hairy eyes ally this genus to Caloseter (from Europe) and Solindenia (from the

Sandwich Islands). Caloseter has the female wingless, and the ovipositor is not

exserted, while the scutellum is broad at the base, and the front is not ridged at the

insertion of the antenne, the middle tarsi too not being setose. Solindenia may be

known from it by the second abdominal segment not being much longer than the

third, and transverse at the apex; the eyes are larger, and project more behind, and

there is a wide furrow over the mouth.

Synopsis of Species.

1 (4). Thorax elevated into a peak above.

2 (8). Middle of flagellum testaceous; ovipositor more than one half the

leugth of abdomen. . . . . « ornaticornis.

3 (2). Flagellum entirely black ; ovipositor not half the length of the

abdomen . . . . 1 1 1 ew ee ww we ee we ee Gromedarius.

4 (1). Thorax flat above.

5 (6). Flagellum with a testaceous ring in the middle; abdomen distinctly

longer than the head and thorax together; ovipositor not one half

the length of the abdomen . . . .. . . . « « longiventris.

6 (5). Flagellum entirely black; abdomen not much longer than the head

and thorax together; ovipositor more than half the length of the

abdomen . 2. 2. 1 ww we ee ew ee ew CraSSICOrNIS.

1. Lutnes ornaticornis. (Tab. VI. figg. 16, 16a.)

Niger; antennarum basi et articulis 8°-10™ abdominisque basi testaceis; geniculis albidis; alis fuscis, albo

maculatis. 2.

Long. 5-6 millim.

Hab. Panama, Volcan de Chiriqui 4000-6000 feet (Champion).

The head, thorax, and apical half of abdomen are alutaceous; the head (slightly), the

thorax in front of the scutellum, and the apex of the abdomen are covered with small,

glistening, white, distinctly separated hairs; over the second and third pair of coxe is a

126 HYMENOPTERA.

thick tuft of white hair; the legs are covered with a sparse white glistening pubescence ;

and the underside of the abdomen at the apex is sparsely covered with moderately

long black hairs. In front of the scutellum is a deep transverse furrow. The meso-

thorax is distinctly margined in front (the margin extending to the middle); roundly

angled in front, and wider than the prothorax. The mesonotum bears no sutures in

front of the scutellum, except an almost obsolete hollow on either side in front. The

scape at the base and apex is black. The middle and posterior trochanters, the

apices of the posterior coxe, and the mark on the middle of the intermediate tibie

beneath are testaceous. The breast in front of the middle legs is dirty testaceous, but

I am not certain if this isnatural. All the calcaria are black; the fore knees are only

slightly white. The fore wings are subhyaline at the base; in front of the cubitus is a

curved, narrow, hyaline band, and opposite this is a broader and shorter band; the

apices are almost bare, and lighter coloured than the middle. The hind wings at the

base bear a few long feather-Jike hairs; the apices shortly fringed. Ovipositor short,

thick, testaceous. The scape may be entirely black or testaceous; and the number and

position of the testaceous joints of the flagellum vary—sometimes it is the eighth to

tenth, in other specimens the fourth to sixth.

2. Lutnes dromedarius.

Niger; tarsis anterioribus terebraque testaceis, geniculis trochanteribusque posterioribus albidis ; alis fuscis, .

albo fasciatis.

Long. 5-6 millim., terebra 14 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Antenne of the length of the abdomen, thick, clavate at the apex, the last joint

obliquely truncated, the joints not clearly separated, covered with a close, white down.

Head, thorax, and apex of the abdomen alutaceous; rest of abdomen smooth, shining,

glabrous; apex of the abdomen, head, and thorax covered with a close, white down ;

mesopleura scarcely pilose; apex of abdomen on lower side covered with long white

hair; the pronotum carries a tuft of long black hairs; legs covered with a microscopic

pile. At the commencement of the ulna (but not touching it) is a curved band pro-

ceeding in the direction of the apex of the wing; at the cubitus is a broader and shorter

p>?

cloud proceeding in the direction of the first.

8. Lutnes crassicornis. (Tab. VI. fig. 15, 2 .)

Niger; tarsis anticis terebraque testaceis, femoribus posterioribus basi, coxarum posticis apice geniculisque

posterioribus albis; alis fumatis, albo maculatis.

Long. 6 millim., terebra fere 2 millim.

Hab. Panama, Volcan de Chiriqui 3000 to 4000 feet (Champion).

The antenne, head, thorax, sides, and apex of abdomen are covered with a white

_ pubescence, which is longest on the apex of the abdomen; the apex of the antenne

LUTNES.—ASEIRBA. 127

and mesopleura almost glabrous; the pronotum bears a few long, stiff, bristle-like

hairs; the pubescence on the mesonotum in front is fuscous. Head and thorax

alutaceous, opaque. The mesopleura shining, finely punctured, and variegated with

blue and green metallic tints. In front of the scutellum is a deep transverse furrow ;

from this runs, along the outer side of the mesonotum, a curved carina to the prothorax,

becoming united with the suture, which separates the latter from the mesonotum.

Outside this is another carina which issues from the tegule, and which joins the

prothorax on the side at the middle; and from the transverse furrow run two carine

along the middle, which become obsolete before reaching the pronotum. The centre

of the mesonotum is hollow, but not very deeply; in the centre of the hollow is an

almost obsolete carina.

4. Lutnes longiventris.

Niger ; coxarum posterioribus apice, trochanteribus posterioribus et basi tibiarum posticarum albis.

Long. 5 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Scape of antenne broad, compressed to a sharp edge on lower side; flagellum stout,

swelling gradually towards the apex; the apices of the third and the fourth joints

obscure, white on the outside. Mesonotum flat, considerably depressed in the centre,

the depressed part with an obscure blunt ridge in the middle. Head and thorax

opaque, alutaceous, covered with a short pubescence. Abdomen smooth, shining at

the base, the apex pilose and less shining; sheath of terebra nearly half the length

of the abdomen. Spurs testaceous, the long one on the middle tibiz scarcely two

thirds of the length of the basal joint of the tarsus; apices of the four posterior

tarsi testaceous. Wings smoky; the base and apices, and a curved narrow fascia in

the middle, hyaline.

Comes nearest to L. crassicornis, but smaller; the centre of the mesonotum much

more hollowed, the sheath of the ovipositor shorter and testaceous, the wings are lighter

in tint, and the scape is much thicker and more compressed laterally.

ASEIRBA.

Antenne inserted in the middle of the face, 10-jointed, of nearly uniform thickness.

Head broad, concave behind, convex in front. Eyes large, the head not projecting

behind them; ocelli in a triangle. Front projecting a little between the antenne;

there are no antennal grooves, nor are there sutures on the vertex. Prothorax small.

Mesothorax large. Mesonotum without sutures; on the side, a little below, a carina

runs straight from the pronotum nearly to the tegule, where it curves up and runs

straight across the mesonotum to join a similar carina on other side. There is

another carina behind it and in front of the scutellum, which is ovoid, broad at the

128 HYMENOPTERA.

base, and becoming narrowed and rounded behind, the apex projecting a little over the

metanotum. At the base of the metanotum and beneath the overhanging part of the

scutellum is a transverse carina, and from near the centre of this runs on each side a

curved keel to the side behind the posterior wings. The metathorax slopes down from

the scutellum, so that the thorax is much higher than the abdomen. At the apex of the

metathorax is a small round arc, separated from the following portion of the abdomen

by a white membraneous space, like the “‘ blotch” of the Tenthredinide ; this no doubt

representing the first abdominal segment, the abdomen being completely sessile. The

segment behind it is very large and slightly rounded at the apex; the base being incised

by the large semicircular blotch. The rest of the abdomen tapers towards the apex; it

is a little longer than the basal portion, and bears no trace of being composed of more

than one segment; on the lower side, laterally, it is deeply incised, and from the upper

part projects the ovipositor. The ovipositor is nearly as long as the abdomen; it is

straight, broad, compressed laterally, and resembles the sheath of the Tenthredinide.

Legs stout, tibiz slightly compressed. Anterior and posterior spurs very minute, and

seemingly single. Middle tibie with one large, stout spur, longer than the basal joint

of the tarsus, and one short, stumpy one. Middle tarsi stout, thick, and setose on the

lower side. There is no marginal branch in the wings; the cubitus is straight.

The remarkable structure of the abdomen distinguishes this genus at once.

1. Aseirba caudata. (Tab. VI. fig. 13.)

Nigro-cerulea; flagello antennarum caudaque nigris, pedibus sordide testaceis, coxis et femoribus posticis

ceruleis, femoribus tibiisque anterioribus proparte fuscis; alis hyalinis,

Long. (cum terebra) fere 4 millim.

Hab. Guatemaa, Torola 1600 feet (Champion).

The antenne are longer than the head and thorax together, very slightly thickened

towards the middle, and covered with a fine pubescence ; the first joint of the flagellum

is not much more than half the length of the succeeding, which is the longest; the

others become gradually (and slightly) shorter, and the apex is attenuated. The head

and mesonotum are semiopaque, and covered with a close, white, moderately long

pubescence. ‘The sides of the pronotum and pleure are very minutely punctured.

Abdomen smooth, shining, and sparsely pubescent; the ovipositor densely pilose,

opaque ; the head is covered with round, widely separated punctures. All the tarsi, the

tibiee at the apex, and the knees broadly, are dull testaceous; the anterior femora are

for the most part fuscous, tinged with blue; the posterior femora are blue, except at the

extreme base and apex; the coxe are bluish black ; the rest of the legs fuscous. The

sides of the head and pronotum are blue; the rest of the head and thorax is black

tinged with blue. ‘The scutellum and abdomen are coppery.

EPISTENIA. 129

Subfam. PTEROMALINA.

I use this name in the old sense as defined by Walker (List of Chalcide) and Brullé.

EPISTENTIA.

Epistenia, Westwood, in Griffith’s Animal Kingdom, Ins. ii. p. 482, t. 77.

A widely distributed genus over the warmer regions of the globe. Lycisca, Spinola,

does not apparently differ to any great extent from it.

1. Epistenia balteata. (Tab. VI. fig. 3,9; 3a, labium and labial palpi;

mandible.)

Cyaneo-viridis, nigro et purpureo maculata; pedibus rufis, coxis subtus femoribusque posterioribus subtus

viridibus ; antennis nigris, scapo viridi; alis hyalinis, fusco maculatis.

Long. 16-18 millim., cauda 5-6 millim., ¢12 millim.

Hab. Guatemata, San Gerdnimo, Teleman, Panzos and El Reposo 800 feet.

(Champion).

- Antenne not much longer than the thorax; flagellum thick, becoming gradually

thicker towards the apex; second joint scarcely shorter than the third, thinner than

the latter, especially at the base, where it is more or less green; the following joints

are much shorter, the fourth is a little longer than the fifth, the last is one half longer

than the preceding. Head as broad as the thorax; face coarsely punctured; the

vertex and the posterior region less strongly punctured; the antennal depression

smooth, shining, impunctate. Face covered with a short, thick, white pubescence ;

vertex with shorter black pubescence. Thorax coarsely rugose; the pleure and breast

less strongly punctured. Scutellum rounded and projecting behind, and with a distinct

margin. Four basal segments of abdomen finely punctured; cauda as long as the

three preceding segments, pilose. Coxe punctured at the sides and beneath; the

posterior pair with a broad depression at the side, the depression usually reddish or

purplish in colour. The pronotum in the middle, the greater part of the mesonotum, the

abdominal segments at the apex, and the cauda are more or less black or purplish black.

The posterior femora either green or purplish beneath, and the tibie red, or more

or less purplish. The wings are short, not much longer than the head, thorax, and

basal segment of abdomen; at the base of the ulna, and touching the costa, is a

fuscous mark, which is a little broader than long; at the termination of the cubitus there

is a narrow curved fuscous line, which is continued nearly to the apex of the wing; at the

lower part of the wing, opposite the ulna, is a fuscous cloud, narrow and long in shape.

The male has the legs purple, through which the red appears in scattered small

spots; on the inner side of the anterior femora are two irregular white spots. The

coloration of the rest of the body in the male is pretty much as in the female; the

marks on the fore wings are longer than in the female.

BIOL. CENTR.-AMER., Hymenopt., December 1884. Ss

mA, 3A

130 HYMENOPTERA.

2. Epistenia maculipes. (Tab. VI. fig. 4,9; 4a, antenna; 44, fore leg; 4c,

maxilla and maxillary palpus.)

Nigro-viridis ; antennis nigris; pedibus rufis, coxis nigris, tibiis tarsisque posterioribus fuscis; alis hyalinis,

fusco maculatis.

Long. 9 millim.

Hab. Panama, Bugaba (Champion).

Head finely, thorax coarsely, punctured; pleure finely punctured, smooth and

shining at the top. Antennal grooves less strongly punctured and less metallic than

the vertex. Head and thorax closely covered with a paledown. Abdomen alutaceous,

covered with a pale pubescence at the sides and apex. The apex of the pronotum, a

stripe across the mesonotum at the tegule, the upperside of the pleure, and the sides

of the metanotum are green. The legs are covered with a pale, longish pubescence.

The coxe are punctured. The apices of the posterior tibie are not fuscous, the

same parts of middle tibia paler; the hind femora are black at their apices laterally.

All the parts of the legs tend to become more or less fuscous; the apices of the

coxee, and the trochanters, are usually white. At the base and apex the abdomen is

smooth and shining, the rest finely and closely punctured; the segmental divisions,

however, being smooth and shining; the base and middle are dark blackish purple,

the apex golden. The male does not differ in coloration.

Differs from L. balteata in the thorax being much more closely and finely punctured,

in the longer prothorax and metathorax, and much shorter ovipositor, the latter

scarcely longer than the second segment, while in £. balteata it is nearly as long as the

abdomen itself. The size of the fuscous fascie on the wings varies.

3. Epistenia rufipes.

Viridis ; terebra flagelloque antennarum nigris, pedibus tegulisque rufis; alis subfumatis, nervis sordide

testaceis.

Long. 8 millim.

Hab. Panama, Bugaba (Champion).

Head and thorax coarsely punctured all over, the punctuation on face finer, the latter

sparsely covered with longish white hairs. Prothorax short, subtransverse. Scutellum

with a distinct border behind its apex; the border forming a tooth, which projects over

the metanotum. Abdomen not much longer than head and thorax together ; the base,

a narrow band in the middle, and the apical half blackish purple; the middle punc-

tured, base and apex smooth, shining. Ovipositor but shortly projecting.

AMOTURA.

Antenne 10-jointed, situated not far from the mouth. Scape three fourths of the

length of the flagellum, compressed and dilated at the apex, the dilated portion forming

a broad knife-like keel. First jomt of flagellum cylindrical, longer than any of the

AMOTURA. 131

others, nearly as long as the second and third together ; the joints thicker and shorter

towards the apex, which is obliquely truncated; the penultimate joint not half the

size of the preceding ; the apical apparently composed of two joints, and as long as the

two preceding together; if composed of two there will be thus eleven joints in all.

Antennal grooves deep; below each antenna there is a sharp, thin carina issuing from

the outer border of the grooves. Eyes large, hairy; the head scarcely projecting

behind them ; the two upper ocelli in a line, the lower ocellus at some distance below

them. Prothorax small above, more strongly developed laterally; the sides straight,

very slightly hollowed. Lateral sutures on mesonotum distinct. Scutellum large, broad

in front, narrower behind, where there is a well-defined margin a little way down.

Metathorax small; its spiracles large and oval. Second abdominal segment occupying

nearly half of the entire extent of the ventral surface; third small, fourth double its

length, fifth a little longer than fourth, and with a large round spiracle at its fore

margin. The ovipositor extends beyond the tip of the abdomen, and originates quite

close to the base. Four anterior tibize each with one large, stout, curved spur;

posterior tibie with none. Posterior femora enlarged, toothed; posterior coxe large,

thick, hollow in the centre on their outer sides; posterior tibie thick, curved. Claws

simple. Costal branch of fore wings one third of the length of the ulna.

In the form of the head, antenne, and thorax this genus does not differ much from

Epistenia, but it differs from it markedly in the structure of the ovipositor and in the

very different posterior legs.

1. Amotura annulicornis. (Tab. VI. fig. 6,9; 6a, hind leg; 68, maxilla

and maxillary palpus; 6 ¢, labrum and labial palpi from beneath.)

Viridis, cupreo tincta ; flagello antennarum, tibiis tarsisque nigro-purpureis; antennarum medio, tibiis tarso-

rumque basi albidis ; alis hyalinis, medio infumatis.

Long. fere 7 millim.

Hab. Nicaragua, Chontales (Janson).

The antenne gradually thickened towards the apex; the flagellum about one

third longer than the scape. Head coarsely punctured, especially between the

antenne; the antennal grooves very finely punctured; in front and at the sides the

head is covered with long white pubescence. The mesonotum with the scutellum

coarsely punctured. Pronotum less coarsely punctured. Mesopleure finely punctured

above, behind (broadly) smooth, shining, impunctate. The breast very finely and

irregularly punctured. The metanotum irregularly punctured. Metapleure coarsely

punctured. The abdomen smooth, shining, impunctate. The mesonotum and pleure

marked with golden or coppery splashes; the abdomen above purple. Pleura,

cox, and sides of abdomen covered with longish white hairs. On the anterior tibie

the white is scarcely visible, on the middle pair it is much broader; on the hinder pair

the extreme base is black, followed by a moderately broad white ring. The metatarsus

and the next joint are white in all the tarsi. The posterior coxee are very finely punc-

ss 2

132 HYMENOPTERA.

tured, except the hollow in the centre on the outside, which is very faintly striated.

On the underside the posterior femora are closely beset with teeth all over. The

smoky fascia on the wings is placed upon the cubitus, where it is narrow, but becomes

much broader and more diffused towards the sides. The costa is covered with long,

black hairs.

LELAPS.

Lelaps, Haliday, Trans. Ent. Soc. iii. p. 292; Walker, Trans. Ent. Soc. 1862, p. 389.

A species of this genus is known from the Galapagos Islands, another from St.

Vincent Isle [West Indies], and some have been described from Brazil.

1. Lelaps albipes. (Tab. VI. fig. 8, 2.)

Cuprea; abdomine nigro; antennis nigris, albo cinctis; pedibus albidis, femorum medio fusco; terebra rufa,

apice nigro; alis hyalinis, fusco maculatis.

Long. fere 7 millim. (cum ‘erebra).

Hab. Panama, Bugaba (Champion).

Antenne as long as the thorax and abdomen, shortly and densely pilose, gradually

thickened towards the apex; second joint about one half of the length of the fourth,

third nearly as long as the fourth and fifth together, fourth a little longer than the fifth,

which is longer than the sixth, eighth shorter than the seventh and longer than ninth ;

tenth a very little longer than following, last longer than eleventh; scape beneath, the

three apical joints, the apex of the third, and the base of the fourth white. Head

finely striated ; front and face carinated; clypeus smooth, shining, not striated; on

the top are some (seven or eight) long, stiff, black hairs. Ocelli in a curve. Eyes

large, oval. Prothorax finely striated, the sides rounded; pleure smooth, shining,

striated behind above. Mesonotum in front of the wings transversely and finely rugose

striate, behind them longitudinally striated. Scutellum flat; behind it is a suture

which goes right across; a little behind this is another transverse carina; the part

immediately in front of this is smooth and shining ; before this smooth part the surface

is coarsely reticulated, as is also the rest of the metathorax. Behind the second trans-

verse carina, and in the centre, there is a raised semioval carina, and the field which it

encloses has a carina in the middle. The pleure are smooth and shining immediately

below the wings and over the middle legs; the rest, and the sternum, finely and closely

punctured. The petiole is short, ringed in the centre, the ring reticulated, very. finely

striated at the apex, and curved beneath. The pronotum has a few long, stiff hairs, and

there are three rows (of three or foureach) of hairs on the mesonotum. Abdomen smooth,

shining; third segment with two or three long, stiff hairs; apex beneath pilose; second

segment above scarcely so long as the succeeding together. Terebra longer than the

abdomen, pilose. Posterior coxe finely and transversely striated behind; their extreme

bases black ; middle coxm, the apices excepted, black. The costa at base bears long,

LELAPS. 133

stiff hairs, the rest pilose. The centre of the fore wings is broadly fuscous, and this

fuscous band bifurcates beyond the cubitus into two, both of which touch the edge of

the wing, one at either side. Before the point where the band splits the wing is white.

2. Lelaps ferruginea. (Tab. VI. fig. 7, 2; 7a, antenna.)

Ferruginea ; antennarum articulis 7°-9™ nigris, coxis anticis et posticis genubusque albidis, tarsis pallidis; alis

fumatis, albo maculatis.

‘Long. 7 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Antenne as long as the fore wings, becoming gradually thicker towards the apex,

shortly and closely pilose; second joint about one third of the length of third, which ©

is a little longer than the fourth and fifth together; the fifth is a little shorter than

the fourth; sixth shorter than fifth, and longer than seventh; seventh and eighth

subequal; ninth shorter than eighth and longer than tenth, which is as long as the

eleventh ; twelfth shorter than the preceding joint, from which it can scarcely be distin-

guished, so closely are they united. Head rugosely striated; face below the antenne

smooth, shining, very slightly projecting. Thorax above rugose, transversely striated

before the wings, longitudinally striated behind them. Pleure beneath and sternum

striated. Metanotum coarsely reticulated. Behind the border of the scutellum is a

waved carina enclosing a reticulated space; behind this again is a straight carina, which

encloses a smooth space; behind this again is a curved raised carina, which projects in

the centre, and from this runs a carina down the middle of the metanotum to the apex;

a short carina runs to the second transverse carina, dividing the field into two parts.

Petiole short, thick, ringed in the centre, behind the ring reticulated, before it smooth,

shining. Abdomen smooth, shining, blackish in the middle, the apex acute; terebra

very shortly projecting. The face has a whitish pubescence, and on the vertex are some

long, stiff, black hairs; there are also some long, stiff, black hairs on the pronotum, and

in front of the wings on the mesonotum, and one or two on the third, fourth, and fifth

abdominal segments. The hind coxe are striated behind; the four anterior trochanters

are blackish; the anterior femora (especially) and the tibiz are suffused with black ;

the tibiee and tarsi are closely pilose. The bases of the fore wings are fuscous; at the

base of the ulna is a narrow fuscous cloud; behind the cubitus they are fuscous, but

between this and the above-mentioned narrow cloud they are white, the wide part being

much wider at the costa than at the middle; in front of the cubitus is a broad white

band, succeeded by a faint fuscous cloud, which extends to the apex; the posterior

wings are hyaline; the base of the costa bears a few stiff hairs.

3. Lelaps tibialis.

Sordide ferruginea; antennarum apice, coxis anticis et posticis abdominisque apice albidis; tarsis pallidis,

trochanteribus anterioribus et tibiarum posticarum dimidio apicali nigris; alis fuscis. albo maculatis.

Long. 4 millim.

134 HYMENOPTERA.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Antenne short, thick, becoming gradually thicker towards the apex, almost glabrous ;

second joint as long as the fourth; third as long as the fourth and fifth together, these

with the sixth subequal ; seventh a little shorter ; ninth longer than the eighth or tenth ;

last shorter than the preceding joint, and not clearly separated from it; the scape reddish,

the flagellum dark ferruginous, becoming lighter in tint towards the apex. Head a

little broader than the thorax, finely rugose; thorax above finely and closely rugose ;

pronotum margined behind, broadly rounded and projecting behind, narrower in front,

and separated from the mesonotum by a ridge. Scutellum rounded behind, a little

projecting, the sides in front hollowed and striated. Mesonotum reticulated, the

transverse carina produced into a sharp spine in the middle. Pleure striated.

Petiole much longer than broad, about one half of the length of the posterior cox ; a

distinct ring at the basal third. Abdomen smooth, shining, ovate, the apex acute, not

forming a “cauda;” second segment longer than all the others together; the middle

segments more or less blackish ; ovipositor scarcely projecting, the tip black. There

are some bristles on the head, pronotum, and mesonotum; the head and meso-

notum covered with a white depressed pile. The wings at the base are irregularly

clouded at the commencement of the ulna, there is a cloud at the cubitus and a smaller

one on the opposite side, and the apex is hyaline, the rest fuscous.

PRIONOPELMA.

Prionopelma, Westwood, Proc. Zool. Soc. 1835, p. 51.

With the exception of one from Zululand all the recorded species of this genus are

from South America.

1. Prionopelma pilipes. (Tab. VI. fig. 5,9; 5a, labium and labial palpi; 5 4,

maxilla.)

Viridis; antennis, tibiis, tarsis terebraque nigris; terebra quam corpus duplo longiore.

Long. 11 millim., terebra 24 millim.

Hab. Nicaracua, Chontales (Janson).

Antenne nearly as long as the body; the scape sharply compressed on the lower

side, curved, and with a short pedicel as long as the third joint at the base; the second

joint is twice as long as broad, narrow at the base, becoming gradually thicker towards

the apex, which is obliquely truncated ; third joint longer than the fourth, which is.

much longer than the fifth; the rest get gradually shorter; the last conical, oblique;

the basal joints are compressed, the apical less so, but still not cylindrical. The face

is covered with white pubescence ; the front below the antenne depressed, hollow.

The head, mesonotum, pleure in front, and breast finely punctured. Meso-

pleure shining, obscurely striated, this portion being separated from the rest by a

groove, which originates near the tegule, goes round in front, curves round and

EUPERILAMPUS. 135

proceeds above the sternum to the middle coxe. The mesonotum has a scattered

fuscous pubescence; the breast with shorter, closer, and paler pubescence; the coxee

(especially the posterior) on the lower side with dense long woolly hair; the rest of

the legs bear a short scattered pale pubescence. The femora are green on the outside,

internally violet-black ; the anterior tarsi fuscous. The head and thorax are marked

with violet and purple tints.

Notrt.—The following subfamily has been omitted from its place. It should have

followed the genus Orasema on p. 105 :—

Subfam. PERILAMPINA.

This is a group of small extent, but has representatives in most parts of the world—

in America, Europe, in the Oriental Region, in South Africa, and Australia.

EUPERILAMPUS.

Euperilampus, Walker, Notes on Chalcide, p. 67.

This genus only differs from Perilampus in the “scutellum extending hindward and

forming a long stout spine,” while the scutellum of Perilampus is not elongated. It

contains at present only one species.

1. Euperilampus gloriosus.

Pertlampus gloriosus, Walker, Trans. Ent. Soc. 1862, p. 3757.

Hab. Mexico}.

Fam. ICHNEUMONIDA.

The species of this large family have been very little collected or studied beyond

Europe and North America. The exotic species have been altogether neglected, and if

they are as numerously represented in the warmer regions of the globe as they are in the

temperate an immense amount of work has yet to be done before our knowledge of the

tropical Ichneumonide will be on a level with what is known of the European or

North-American forms.

Our present systems of classification have been based entirely on European species,

So far as the division of the species into families is concerned the systems of Wesmael

and Holmgren appear to be natural enough, and it is generally possible to place the

tropical species in them without rearranging the definitions given by the above-mentioned

authors; but, so far as my experience goes, the definitions of the subgroups are quite

inadequate. For example, the Ichneumonides Oxypygi, and Ichneumonides Amblypygi,

of Wesmael are suitable enough for European species; but we find so many gradations

in the form of the abdomen among the Central-American species that it becomes

impossible to say whether a particular species is referable to the first or the second

136 HYMENOPTERA.

of these groups. I have therefore not adopted any divisions of lower than sub-

family rank.

Subfam. JCHNEUMONIDA.

This subfamily has been divided into four subgroups by the Belgian entomologist.

Wesmael *—into the Ichneumonides Oxypygi, the Ichneumonides Amblypygi, the

Ichneumonides Platyuri, and the Ichneumonides Pneustici. So far as lam aware no

representative of the last group has been discovered in our range. The other

three are represented; but I have come to the conclusion that there is no absolute:

distinction between them, the characters on which they are founded merging into each

other completely. And it is equally difficult to find characters to distinguish the

genera Ichneumon, Hoplismenus, Amblyteles, and Trogus. We find great variation in

all the parts of the body on which these genera have been based—in the antenne, the

head, the thorax and its scutellum, and the abdomen. There are, for example, all grada-

tions from a flat scutellum up to one which is strongly dentiform and spinose. Cresson

(Proc. Acad. Phil. 1873, p. 105) has come to the same conclusion, that it is impossible

to define clearly a Hoplismenus from an Ichneumon (sensu str.). The genus [chneumon,

as here used, is practically equivalent to the Ichneumonides Oxypygi, and Ichneumonides.

Amblypygi, of European writers.

PATROCLUS.

Patroclus, Cresson, Proc. Acad. Phil. 1878, p. 104. °

Cresson regards this as a subgenus of Jchnewmon (as above defined); but the pecti-

nate claws furnish such a good mark of distinction that it seems to me, especially

seeing the difficulty there is experienced in differentiating Ichneumon, that it may well.

be raised to generic rank. |

——- 1. Patroclus nigroceruleus. (Tab. VII. fig. 1, ¢ .)

Ichneumon (Patroclus) nigroceruleus, Cresson, Proc. Acad. Phil. 1878, p. 104’.

Hab. Mexico, Orizaba!; Guaremaia, Zapote, Las Mercedes 3000 feet, summit of

Volcan de Agua 12,400 feet (Champion).

~~~ 9, Patroclus lectus.

Ichneumon lectus, Cresson, Trans. Am. Ent. Soe. ii. p.18 [¢ & ?]?.

Hab. Mexico, Orizaba 1.

—— 8. Patroclus toltecus.

Ichneumon toltecus, Cresson, Trans. Am. Ent. Soc. ii. p.17 [¢ & 2]’.

Hab. Mexico, Orizaba 1.

* Tent. Disposit. Method. Ichneumon. Belgii, p. 11.

ICHNEUMON. 137

ICHNEUMON.

Ichneumon, Linnzeus, Syst. Nat. ed. i. (1735); Wesmael, Nouv. Mém. Ac. Brux. 1844, p. 18.

Hoplismenus, Wesmael, 1. c. p. 18.

The arrangement of the species of this genus is a work of great difficulty, and indeed

cannot be effected in a satisfactory manner until a much larger number of species

have been brought together for study. As already remarked, though we find great

variation in the structure of the antenne, thorax, and abdomen, yet these peculiarities

merge gradually together, and thus the task of splitting up the genus into more or less

clearly defined sections cannot be carried out as one would wish. Another difficulty

lies in the fact that very many species are only known as males; and these, as a rule,

do not afford such good characters for specific discrimination as do the females.

Cresson experienced the same difficulty when dealing with the Mexican species *, and

my task of systematically grouping thei has been greatly increased by my having seen

very few of this author’s species. Under thesé circumstances I have thought it best to

follow Cresson’s arrangement, interpolatitig the. numerous new species near those of

this author to which, from the destriptions, I- -judged: them to be most nearly related.

Ichneumon isa genus of world-wide ‘distribution, and already contains several hundred

species.

Seutellum: sf " subcdnvec, 01 or conven.

1. Ichneumon castor, 9. “Sex JVs ‘tae, a i3y

Niger ; tibiis tarsisque fuscis; alis brunneis, stigmaterfusco. 2.

Long. 22 millim.

Hab. Costa Rica, Volcan de Irazu, 6000 to” 7000 feet (Rogers).

Body covered with a short close fuscons' ‘pubescence. “Antenne as long as the

abdomen and half the thorax, stout, a little flattened towards the apex, which is

-fuscous black. Head covered with large, but not very deep, punctures ; clypeal fovew

large, deep; vertex raised in the centre, and separated from the eyes by a wide and

deep depression, which is transversely reticulated ; eyes clearly margined ; an indistinct

transverse furrow over the clypeal region. Thorax, strongly and closely punctured ;

pleurse longitudinally striated, the striations strongest on the lower halves. Scutellum

not very much raised above the mesonotum, the centre. flattish, broader at the base than

at the apex, longer than broad, strongly punctured, the punctures running into each

other and forming irregular reticulations. Postscutellum rugose. Upper median area

of metanotum a little longer than broad, a little narrower towards the apex, closely

rugose ; all the are defined, reticulated; tubercles blunt ; the apex with a semiper-

pendicular slope, straight, the middle not much hollowed. Petiole as long as, if not

longer than, second segment, smooth, shining, keeled; the sides with broad perpen-

* Of, Proc. Acad. Phil. 1873, p. 105.

BIOL. CENTR.-AMER., Hymenopt., December 1884. TT

138 HYMENOPTERA.

dicular keels all over. Postpetiole raised in the middle, finely punctured, the apex of

the depressed sides more strongly punctured; the base shining, with some scattered,

large punctures. Abdomen finely and closely punctured, opaque, the apex acute,

narrower at the second segment ; gastrocceli large, deep, wider than long, the bottom

reticulated, the sides very finely punctured. Legs long, covered with a dense fuscous

pubescence ; the tarsi bear some stiff bristles. Areolet angled, broad at the top, half

the width at the bottom.

Differs from J. pollux in its fuscous wings, stigma, and tarsi; in the abdomen being

narrower; in the upper median area of metanotum being broader than long, and not

narrowed at the apex.

2. Ichneumon pollux.

Purpureus ; antennis nigris ; alis atro-violaceis. 9.

Long. 26 millim.

Hab. Mexico, Orizaba (Bilimek).

Body very finely and closely punctured, semiopaque, velvety, covered with a close

black pubescence. Scutellum not much elevated above the mesonotum, coarsely and

closely punctured, narrower at the apex. Upper median area in metanotum longer

than broad, the sides narrower and curved from where the lateral carine are received ;

the other areas clearly defined. Petiole smooth and shining, the apex depressed in the

centre ; postpetiole closely and rather strongly punctured. Abdomen broad in the

centre, narrower at the base, more sharply pointed at the apex, the contraction being

gradual from the middle; gastrocceli broader than long, large, not very deep, irregu-

larly reticulated in the centre. Areolet 5-angled, broad at the top, half the width at

the bottom.

The deep purplish-black, semiopaque, very finely and closely punctured, and velvety

body of this species separates it from its allies.

3. Ichneumon costaricensis. (Tab. VII. fig. 3.)

Hab. Costa Rica, Volcan de Irazu 6000 to 7000 feet (Rogers).

In coloration this species differs from the preceding merely in the body being of a -

much brighter bluish tint, this being especially neticeable on the abdomen, which is

more shining ; it is a more slender and narrower insect; the punctuation is closer ; the

scutellum is broader, and not so much narrowed behind. The upper median area of

metanotum is a little broader than long, and is not at all narrowed behind; the

boundaries of the lower area are much more clearly indicated. The postscutellum is

higher and with a much more distinct slope towards the second segment, and

more closely and finely punctured than the scutellum. The gastrocceli are deeper and

more shining, and the abdomen is narrower. There is no perceptible difference

between the wings of the two.

ICHNEUMON. 139

The male has the inner orbits of the eyes from the clypeal fovee, and the anterior

knees, tibize, and tarsi, and the greater part of the middle tibie [all in front] yellowish

white.

4. Ichneumon astarte. (Tab. VII. fig. 5.)

Niger; medio antennarum late, palpis, tibiis tarsisque rufo-testaceis, orbitis oculorum flavis ; apice tibiaruam

posticarum nigro; alis fuscis, stigmate testaceo. ¢.

Long. 23 millim.

Hab. Guatemata, Sabo in Vera Paz (Champion).

Finely and closely punctured all over, semiopaque ; the punctuation on the pleure,

if anything, closer and stronger. Head not buccate, slightly excavated above the

antenne; eyes projecting, reaching to the top of vertex. Scutellum elevated, the disc

flat, retreating gradually to the postscutellum; a deep hollow at its base, this hollow

having a distinct border with a carina on its upper part, and which extends to the

pronotum past the tegule. Postscutellum projecting. The metanotum slopes very

gradually to the lateral spines, then it has a more abrupt slope to the base of the

abdomen. Metathoracic areas subobsolete, lateral spines blunt. Basal three fourths

of petiole shining, hollow in the middle, and with shallow punctures on the basal half,

the rest shagreened; at the point where the apex bends there is, on either side, an

obscure tubercle. The edges of the second and third segments are piceous. Coxe

strongly, femora obscurely punctured ; apices of trochanters piceous. Gastrocceli large,

deep, broader than long, coarsely punctured at the edges, more finely punctured in the

middle. The apices of the tarsi incline to piceous. Areolet 5-angled, much longer

than broad.

5. Ichneumon semiobscurus.

Niger, punctulatus, opacus; palpis, geniculis, tibiis tarsisque luteis ; alis fumatis.

Long. 16 millim.

Hab. GuatEMaLa, Quezaltenango 7800 feet (Champion).

Head, thorax, and coxe pilose; closely punctured all over. Abdomen less strongly

punctured than thorax, but the punctures are closer, especially on the basal half

Scutellum subconical, acute at apex, carinate at the sides, and with a large depressior.

at the base. Petiole shining, almost impunctate in the middle above, the centre raised

and separated from the sides by an indistinct furrow ; somewhat suddenly dilated at

the apex, which is broad and a little curved. Gastrocceli large, deep, obscurely

striated; the segments distinctly separated from each other. Metathorax gradually

sloping behind. The wings are not altogether smoky, being suffused with small

hyaline spaces ; areolet moderately large, narrow above, the lateral nervures almost

touching at the apex; nervures black. Below the antenne there is, on each side, an

obscure yellowish line touching the eyes. The labrum is piceous.

TT 2

140 HYMENOPTERA.

6. Ichneumon bilimeki. (Tab. VII. fig. 6.)

Niger; geniculis anterioribus, tibiis tarsisque flavo-testaceis, apice tibiarum posticarum nigris ; alis flavo-

fumatis, stigmate nervisque flavis. ¢.

Long. 15 millim.

Hab. Mexico (Bilimek).

Antenne nearly as long as the thorax and abdomen together, stout, covered with a

short close pile. Head closely and strongly punctured, the face not projecting, covered

with a longish pubescence. Thorax closely and strongly punctured, semiopaque ; the

pleure more shining, and longitudinally striated in the middle. Scutellum flattish, not

much raised above the mesonotum, and punctured like it. All the areas on metanotum .

distinct; the supramedian not much broader than long, the sides curved. All the

thorax covered (but especially the disc) with a close pile. Petiole closely aciculated,

more strongly and still more closely at the apex ; the sides bordered. Gastrocceli longer

than broad, deep, striated irregularly; the rest of abdomen closely punctured through-

out, opaque, and covered with a close pile. Posterior coxe strongly punctured, the

four anterior coxe less strongly so; trochanters finely, femora obscurely, punctured.

Areolet 5-angled, the lower part sharply angled; the upper sides narrowed above.

The apex of the wing is not so yellow in colour as the rest, the smoky tint there being

quite noticeable. On the face, touching the eyes, there are two small yellow spots.

Closely allied to J. semiobscurus, but differing from it in the yellowish wings, stigma,

and nervures, by the postpetiole not being so distinctly raised in the centre, and by the

areolet being wider at the top.

7. Ichneumon chiriquensis.

Niger; antennis, tegulis, tibiis, femoribus tarsisque anterioribus sordide testaceis; alis hyalinis, stigmate et

costa testaceis, nervis fuscis. ¢.

Long. 14 millim.

Hab. Panama, Volcan de Chiriqui 4000 to 5000 feet (Champion).

Head and thorax covered with a dense fuscous pubescence, which is especially long

on the breast, and marked with shallow punctures, which are all clearly separated ; the

mesopleuree smooth, shining, impunctate. Head excavated above the antenne, not

buccate; with a suture running down from the front ocellus. Scutellum rounded, not

much elevated, longer than broad, rounded at the base and apex; shining, the disc

bearing scattered punctures, the sides with a few longitudinal striations. Postscutellum

aciculated, the scutum on either side of it largely depressed, shining, obscurely acicu-

lated. Metathorax opaque, transversely striated all over; the areas entirely obliterated.

Petiole broad, the base not much narrower than the apex; basal half smooth and

shining, depressed in the middle; apical portion also depressed in the middle, and with

a blunt tubercle on each side at the part where it unites with the smooth basal half;

apical half aciculated, covered with large punctures, except the extreme apex, which

is smooth, shining, and a little raised above the next segment, especially in the middle,

ICHNEUMON. 141

there being a depression on either side. The remaining segments convex, punctured,

the punctuation becoming fainter, and the punctures wider apart as the blunt apex is

reached. Gastrocceli distinct, broad, deep; extending upwards from the side at the

extreme base, then proceeding obliquely downwards to near the middle, then becoming

very shallow, and projecting upwards again as a wide shallow depression. At the base

of the third segment is an oblique depression, and there is also a shallower one at the

apex, extending from the side nearly to the centre above. The apical segment (the

eighth) is scarcely half the length of the seventh ; its sides incised ; cerci long, pilose.

Legs stout, but not very long; posterior coxe with a hollow at their apices behind, the

sides of the hollow being margined. The anterior femora are scarcely testaceous

behind ; the tibiz and tarsi are more or less testaceous behind as well as in front ; the

middle tibiz incline to piceous, as do also the sides of the petiole at the apex. The

antenne are as long as the body. Areolet sharply triangular above.

8. Ichneumon bellatulus. (Tab. VII. fig. 7.)

Niger ; orbitis oculorum, facie (medio excepto), pronoti laterali, tegulis, scutello, postscutello, maculis 2 meta-

noti, abdominis segmentis 1° et 2° cingulo apice, tibiis anterioribus, posticis (apice excepto) tarsorumque

basi albis ; alis hyalinis, stigmate sordide testaceo, nervis nigro-fuscis. ¢.

Long. 13 millim.

Hab. Mexico (Bilimek, 2%); Panama, Volcan de Chiriqui 4000 to 5000 feet (Cham-

pion).

Covered nearly all over with large (comparatively) clearly separated punctures, and

with a longish fuscous or griseous pubescence. The orbits of the eyes are broadly

white all round, but broadest in front ; the face below the antenne is white, except a

broad black line which runs from the antenne to the mouth; there is also a small white

mark on the mandibles, which are punctured. The excavation above the antenne is,

as usual, smooth and shining; the front projects, especially immediately below the

antenne, the projection forming almost a blunt keel in the centre. The collar is

aciculated, and there is a broad white line on its middle, this line being broader than

the line along the side. Scutellum with a few large punctures above; the sides

obscurely keeled above ; laterally it has a gradual slope, which is striolated irregularly ;

the slope behind is smooth, shining, impunctate. Centre of metanotum at the base

almost impunctate ; areas obsolete, the sides covered with a long griseous pubescence ;

the white marks at the sides are longer than broad, rounded at the apex, the base

curved inwardly so that the sides project. Petiole at the base and middle smooth,

shining, impunctate; apex covered with punctures. Grastrocceli transverse, the base

striolated, apex aciculated. ‘The white band on the first abdominal segment is of nearly

equal length ; that on the second is nearly double the width of the first band at the sides ;

in the middle it is interrupted, and much contracted at the apex. The extreme apices of

all the segments are impunctate, shining, the rest punctured and covered with a black

pile. The legs are covered with a pale pubescence, which is especially long on the

142 HYMENOPTERA.

coxe. The coxe and femora are punctured; on the posterior coxe, behind, is a large

white mark, longer than broad. Wings shorter than the thorax and abdomen together, _

faintly fuscous in tint; areolet 5-angled. |

A female, apparently of this species, from Orizaba, has a broad white ring on the

middle of antennz, the white marks on the metanotum are united above, the upper

united portion projecting above the sides; otherwise coloured as in the male.

9. Ichneumon oppilatus.

Niger; facie, scapo antennarum subtus, linea pronoti, scutello, maculis 2 metanoti, abdominis segmentis

marginalibus, geniculis tibiisque proparte flavis ; alis hyalinis, stigmate testaceo.

Long. 13 millim.

Hab. Mezxico, Orizaba (Bilimek).

Antenne stout, the joints longer than broad. Head covered with a silvery white

. pubescence ; front excavated, punctured ; the inner orbits of the eyes are yellow to the

ocelli, the outer orbits yellow in the middle ; mandibles and palpi yellow, the tips of the

former brownish. Thorax covered with a silvery white pubescence, coarsely punctured,

the punctures running into striations on the pleure. Scutellum but slightly elevated.

Metanotum hollow in the centre, the upper area open at apex, the other areas not

defined. Petiole bordered at the sides, aciculated, the postpetiole strongly striated

longitudinally. Abdomen closely punctured all over, the apex blunt; the second

segment broadly yellow at the base, third with a narrow band contracted in the middle ;

the apices of the other segments bordered with yellow. The basal half of anterior

femora, anterior tibie entirely in front, more than the basal half of four posterior tibie,

the anterior coxe at the apex, and all the spurs yellow. There is a small yellow

roundish mark on the mesopleure, and the tubercle beneath the tegule is also yellow.

Areolet 5-angular, the lateral nervures converging above, but not closely.

Differs from J. bellatulus in its strongly striated, totally black postpetiole, black

tegule, yellow spurs, more strongly punctured metanotum, and by every one of the

abdominal segments being bordered with yellow.

C—~ 10. Ichneumon meridionalis. (Tab. VII. fig. 2.)

Ichneumon meridionalis, Cresson, Proc. Ent. Soc. Phil. iv. p.12; Proc. Acad. Phil. 1878, p. 111°.

Hab. Mexico!, Orizaba, Mirador; Guatemaza, San Gerénimo (Champion) ; NICARAGUA,

Chontales (Janson); Costa Rica, Cache (Rogers); Panama, Volcan de Chiriqui 2000 to

3000 feet (Champion).—West InpiEs, Cusa

11. Ichneumon pterelas. (Tab. VII. fig. 4.)

Niger; abdomine (basi excepta) rufo; flagello antennarum annulo flavo; alis flavo-fumatis, nervis cum

stigmate flavis. 9°.

Long. 13-15 millim.

Hab. Mexico, Orizaba (Bilimeh).

ICHNEUMON. 143

Head and thorax coarsely punctured, opaque or semiopaque, covered with a close

pubescence. Head much excavated above the antenne, face not much projecting, apices

“ of mandibles ferruginous. Scutellum scarcely raised above the mesonotum, the sides

indistinctly bordered. Metathoracic areas distinctly defined, supramedian a little longer

than broad, the sides nearly straight. Petiole broad at apex, its sides depressed, above

longitudinally striated, the raised central part bordered, finely longitudinally striated.

Apex of abdomen acute. Legs stout; the anterior tibie and tarsi obscure ferruginous

in front. Areolet 5-angled, the sides a little converging above.

In some specimens the apex of the petiole is rufous. The coloration of the body is

the same as in F. meridionalis; but it is easily distinguished from that species by the

yellowish wings, with the areolet converging above; and it is also a stouter insect.

12. Ichneumon decemmaculatus.

Niger; facie, palpis, orbitis, linea pronoti, maculis 10 thoracis, pleuris, sterno, coxis, trochanteribus anteri-

oribus posticisque subtus albis; femoribus posticis subtus abdominisque rufis; pedibus anterioribus subtus

flavis; alis hyalinis, nervis et stigmate nigris. ¢.

Long. 20 millim.

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Smooth, shining, punctured, the punctures on the head and mesonotum distinctly

separated ; base of metanotum opaque, finely rugose, the apex more shining and more

strongly punctured. ‘The upper metathoracic areas obsolete, the lateral not very

clearly defined. Postpetiole strongly rugose, the rest of abdomen finely punctured,

semirugose. Gastroceeli large, deep, aciculate. On the head, the part above and

behind the antenne is black; the rest, including the mandibles (except their apices,

which are black), being white. Clypeal fovez large, front broadly but not acutely

projecting, a furrow on either side of the projection. On the thorax, the sternum, the

lower part of the mesopleura, a line on the pronotum, the tubercles beneath the tegule,

two small marks in centre of mesonotum, the apical three fourths of the scutellum,

the postscutellum, two small marks at base of metanotum, one beneath the hind wings,

a larger one on the metapleure over the cox, and two roundish ones at apex of meta-

notum, close to the sides, white. The four anterior legs are yellowish white beneath ;

above they are broadly lined with black; the apical joints of the tarsi are entirely

black; the anterior legs are entirely black, except a large mark on the underside of

the coxee and a mark on their base behind, which are yellow; the greater part of the

femora beneath and the tibie beneath in the middle are reddish. The apex of the

petiole and of the postpetiole is black. Areolet 4-angled, the top triangular. Antenne

longish, the scape yellow beneath.

13. Ichneumon argentipilosis. Nate bielyerwrenw tT Heevio.

Niger; facie, palpis, orbitis oculorum, flagello antennarum annulo, linea pronoti,'maculis 2 mesonoti, margi-

144 HYMENOPTERA.

nibus scutelli coxisque anterioribus flavis; pedibus abdomineque rufis, petiolo supra nigro; alis hyalinis,

nervis nigris, stigmate fusco-testaceo. 9. do sterno flavo.

Long. 18-21 millim.

Hab. Guatemaa, Purula (Champion); Panama, Volcan de Chiriqui 2000 to 3000 feet

(Champion).

. Smooth, shining, the face bearing some large shallow punctures ; metanotum rugose ;

the pleure and metanotum densely covered with silvery pubescence; postpetiole

punctured ; abdomen aciculate, not so shining as the mesonotum. Head large, cheeks

well developed, eyes projecting, clypeal foveee large. The head is black only above

and behind the antenne, the orbits are yellow all round. Mandibles yellow, black at

the apex. The margin of the prothorax is broadly yellow; the prosternum is also

yellow; below the tegule is the usually yellow tubercle; the two spots on the meso-

notum are small; the scutellum flat, bearing a few punctures, and lined with yellow,

except at the base. Areas on metanotum indistinct, without tubercles, the middle

behind excavated. Abdomen elongate, the apex acute; gastrocceli shallow, finely

aciculate. Sheath of the ovipositor blackish. Antenne thickened towards the apex and

slightly flattened, semi-involute. Areolet 5-angled, broad above, the upper part not

much narrower than the lower.

The antennz in the male are much longer and thinner than in the female, the basal

joints being much longer.

This species is very closely allied to L. mexicanus, but is, I believe, distinct from it,

I. mexicanus having the “ pectus and pleure beneath” white in both sexes, and on the

mesonotum, instead of the two spots in the centre found in the present species, there is.

a thin line at the side close to the tegule. There is also in J. mexicanus a black spot.

on the hind cox, and the scape in the male has the basal joint beneath yellow; but

two males of what I consider to be J. argentipilosis have these latter peculiarities.

——~—~—~ 14, Ichneumon mexicanus. dantay wy ri Le 7

awry

Ichneumon mexicanus, Cresson, Trans. Amer. Ent. Soc. ii. p. 2 edt cad. Phil. 1873, p. 111. 3°.

Hab. Mexico, Cordova, Orizaba, Mirador 1.

15. Ichneumon suffultus. é hah ® ‘<r ma ~ouk

Niger ; facie, pleuris, linea pronoti, apice scutelli maculisque 4 metanoti flavis ; pedibus nigris, anterioribus.

subtus flavis, femoribus tibiisque posticis subtus rufis; abdomine rufo, basi nigro ; alis hyalinis, stigmate,.

costa et nervis nigris. ¢.

Long. 17 millim.

Hab. Panama, Volean de Chiriqui, 4000 to 6000 feet (Champion).

Antenne black, the scape yellow beneath, nearly as long as the thorax and abdomen |

together. Head broad; vertex finely punctured ;. front projecting, so that there is a

deep and broad depression on either side; hollow above the antenne deep, smooth,

ICHNEUMON. 145

the back of the head and vertex are black, the rest yellow, except the tips of the

mandibles, which are black. Thorax punctured ; scutellum flat, the sides keeled, the

apex rounded, the upper part punctured, the punctures wider apart and larger than on

the mesonotum. Metathorax flat, broad above, opaque, finely rugose, the apex with

large coarse punctures, suboblique, the centre scarcely hollowed ; the supramedian area

obsolete. The tegule are white behind; the edge of the pronotum is white throughout ;

in the middle of the mesonotum are two short white lines. The apical half of the

scutellum, the postscutellum, a small mark on either side at the base, and two large

pear-shaped marks at the apex of the metanotum, a larger mark on the pleure, and

the pro- and mesosternum yellow, the sutures of the latter, however, being black.

Petiole aciculate; postpetiole coarsely rugulose, black, the sides excepted. Abdomen

rather long, closely and longitudinally punctured. Gastrocceli large, broad, aciculate ;

the sides striated. The four anterior legs are entirely yellow on the underside ; the

coxee wholly yellow ; the posterior coxe black, yellow at the base above and beneath ;

the hind trochanters are, for the greater part, black ; the femora reddish beneath, except

at the apex; the hind tibie black, except in the middle beneath; hind tarsi entirely

black. Areolet scarcely 5-angled, the lateral nervures being almost united at the top.

16. Ichneumon totanacus.

Ichneumon totanacus, Cresson, Trans. Amer. Ent. Soc. ii. p.10; Proc. Acad. Phil. 1873, p. 111’.

Hab. Mexico, Orizaba !.

17. Ichneumon otomitus.

Hoplismenus otomitus, Cresson, Trans. Amer, Ent. Soc. ii. p, 21°.

Ichneumon otomitus, Cresson, Proc. Acad. Phil. 1878, p. 112.

Hab. Mexico, Orizaba!.

18. Ichneumon chiapus.

Ichneumon chiapus, Cresson, Proc. Acad. Phil. 1873, p. 112°.

Hab. Mexico, Cordova 1.

19. Ichneumon curiatus.

Ichneumon curiatus, Cresson, Proc. Acad. Phil. 1873, p. 112. no. 7’.

Hab. Mexico, Orizaba!.

20. Ichneumon dilucidus.

Ichneumon dilucidus, Cresson, Proc. Acad. Phil. 1873, p. 112. no. 8°.

Hab. Mexico, Orizaba (Bilimek), Cordova}.

What I take to be this species differs from I. phedra in the stigma (the colour of

BIOL. CENTR.-AMER., Hymenopt., January 1885. UU

Pk. gs

146 HYMENOPTERA.

which is not mentioned by Cresson) being black with a ferruginous tinge; the costa is

also blackish; the areolet as in I. phedra; there are no tubercles on the metanotum ;

the abdomen is longitudinally aciculate; the middle of the postpetiole is more dis-

tinctly separated from the sides; the pubescence is denser on the pleure; and is altogether

a broader and stouter insect. The body is entirely ferruginous.

21. Ichneumon phedra.

Ferrugineus ; facie orbitisque oculorum flavis; flagello antennarum, linea ad basim scutelli, metanoto abdomi-

nisque segmento 3° nigris ; alis fulvo-hyalinis.

Long. 17 millim.

Hab. Guatemata, Purula (Champion).

Body covered with a close fuscous pubescence, which is longest on the thorax. Head

slightly, the mesonotum more strongly and closely punctured ; pleure obscurely striated.

Scutellum a little broader than long, the sides carinate in front, the apex rounded

and prominent; postscutellum distinct, broader than long, rounded at either side,

smooth, shining, scarcely punctured. Metathoracic are distinct, all clearly defined ;

lateral tubercles blunt. Petiole smooth, shining, impunctate, except for one or two

punctures along the sides, which are indistinctly keeled. Postscutellum closely

punctured like the thorax. Abdomen closely and strongly punctured; the base of the

anterior segments longitudinally striated; all the segments constricted at the base.

Wing nervures blackish ; costa and stigma obscure testaceous, the latter darker at the

apex; areolet triangular above. The antenne are not much longer than the abdomen.

22. Ichneumon sycophantus. (Tab. VII. fig. 8.)

Ferrugineus ; facie orbitisque oculorum flavis, flagello antennarum, lineis ad basim scutelli, metathorace abdo-

minisque segmentis 1°-5™ nigris, alis fulvo-hyalinis, stigmate fusco. ¢.

Long. 18 millim.

Hab. Guatemata, Purula (Champion).

This species differs from £. phedra as follows:—The middle of the postscutellum is

not punctured (the sides in J. phedra being punctured), but finely striated; the gastro-

coli are larger; the base of the petiole, and a transverse band on the second, third,

fourth, and fifth segments are black; the surface of the metathorax is rougher, thereby

rendering the aree less clearly defined, and the lateral tubercles are, if anything, larger ;

the coxse are more coarsely punctured ; the lateral nervures of the areolet do not touch

above; and the stigma is fuscous, not testaceous.

23. Ichneumon subfumatus.

Testaceus ; antennarum apice nigro, medio flavo, basi fusca; alis fere fumatis, stigmate sordide testaceo. 9.

Long. 15 millim.

Hab. Guatemaua, Zapote (Champion).

ICHNEUMON. 147

Antenne nearly as long as the abdomen and thorax together, subinvolute and

thickest at the apex, stout, the third joint nearly one fourth longer than the fourth,

the scape ferruginous. Face flat, eyes margined ; the middle of the face, and the orbits

yellowish. Head punctured, the punctures rather large. Mesonotum longitudinally

strongly punctured; the pleure less strongly, and if anything more closely punctured,

and more shining. Scutellum but slightly raised above the scutum, the sides subcarinate,

the upper part flat and covered with large punctures, which form longitudinal rows.

Metanotum closely punctured, the tubercles short; the upper median area broader

than long, rounded behind, truncated in front; the sides of the lower median area not

very clearly indicated. Petiole smooth and shining, the sides inclining to yellow ; post-

petiole finely aciculate. Abdomen shining, the apex acute; gastrocceli flat, aciculate,

the sides striated; the rest of abdomen punctured, but not strongly, all over. Legs

stout, the coxe punctured, the apices of the tarsal joints black.

A larger species than J. Jariceus, with the abdomen longer and much more acutely

pointed; the colour, too, is paler, and the punctuation is not so strong, except on the

scutellum ; the base of the flagellum is fuscous; the wings are darker and longer; and

the antenne are also longer. J. dilucidus is a larger insect with the wings clearer ; the

scutellum more sharply raised over the scutum, and with its sides much more dis-

tinctly carinate, the punctuation closer; and the abdomen longitudinally striated.

24. Ichneumon lariceus. (Tab. VII. fig. 9.)

Ferrugineus ; antennarum medio albo, apice brunneo; alis fusco-hyalinis, nervis fuscis, stigmate fusco, basi

albo.

Long. 10 millim.

Hab. Mexico, Northern Sonora (Morrison).

Head and thorax closely punctured all over, and covered with a white pubescence.

Scutellum smooth, almost impunctate, shining, not much raised above the scutum,

narrowed towards the apex ; a keel running from the mesonotum at the end of the

fovea at its base to the middle of the scutellum. Metathoracic ares all well defined,

the supramedian area horseshoe-shaped, the middle of the metanotum slightly exca-

vated; lateral tubercle not very large. Petiole distinctly keeled along the sides above ;

the apex longitudinally and finely striated. The rest of abdomen closely punctured like

the thorax ; apex bluntly acuminate; sheath of ovipositor projecting, black. Gastrocceli

obsolete. Areolet 5-angled, bulle distinct. Legs robust, covered with a white pubes-

cence; coxe closely punctured. Antenne stout, involute; third and fourth joints subequal.

I. dilucidus comes very near the present species, but differs in being larger, in having

the abdomen longitudinally aciculate, the stigma quite black, the areolet converging

above, &c. Its smaller size, half fuscous and half white stigma, and obsolete gastro-

ceeli distinguish it from J. phedra.

uu 2

148 HYMENOPTERA.

25. Ichneumon verzpacis.

Ferrugineus; apice antennarum nigro, medio palpisque albidis; alis fere hyalinis, stigmate pallide flavo. @.

Long. 8 millim.

Hab. GuateMaLa, Panima (Champion).

Antenne stout, becoming gradually thicker towards the apex, involute; the third

joint a little longer than the fourth; joints seven to sixteen white, the following black.

Head tumid, closely punctured, sparsely covered with a short white pubescence; tips of

the mandibles blackish. Thorax closely punctured ; the pleure (including the sides of

the pronotum) coarsely and longitudinally striated. Scutellum smooth, shining, scarcely

punctured, the sides carinate, narrowed towards the apex. Metanotum punctured and

transversely striated; upper median area longer than broad, harp-shaped; middle of

the metanotum hollowed; lateral tubercles large, more than double as long as broad.

Petiole smooth, shining, the sides keeled; postpetiole finely punctured. The rest of the

abdomen smooth, shining, microscopically punctured ; the second segment more strongly

punctured at the sides; the sides and apex covered with rather long pale pubescence.

Sheath of ovipositor black. Areolet 5-angled, the upper part narrower. The costa is

fuscous black.

Closely allied to J. lariceus, but smaller and narrower, and easily known from it by

the strongly striated pleure, longer tubercles on the metanotum, almost impunctate

abdomen, and pallid yellow stigma; the wings, too, are clearer, and the areolet is longer

and more narrowed above. In J. subpinguis, a species resembling this in coloration,

the antennz are much longer, not so stout, and not involute; the metathoracic tubercles

almost obsolete, the pleure not striated, and the stigma black.

I. verepacis is certainly very closely related to I. ablutus, but, I think, distinct from

that species; all the nervures, for instance, in J. ablutus are said to be honey-yellow,

while the costa and the nervures in I. verewpacis are fuscous black; neither can the

words “yellowish brown” be applied to the base of the antenne; nor is the term

“shagreened” applicable to the strongly punctured and striated thorax of the species

just described.

26. Ichneumon ablutus.

Ichneumon ablutus, Cresson, Proc. Acad. Phil. 1878, p. 118. no. 97.

Hab. Mexico, Orizaba 1}.

27. Ichneumon passirus.

Ichneumon passirus, Cresson, Proc. Acad. Phil. 1873, p. 118. no. 107.

Hab. Mexico, Orizaba }.

__-———_ 28. Ichneumon frivolus.

Ichneumon frivolus, Cresson, Trans. Am. Ent. Soc. ii. p. 11; Proc. Acad. Phil. 1878, p. 118. no. 117.

Hab. Mexico, Orizaba, Cordova 1}.

ICHNEUMON. 149

29. Ichneumon subpinguis.

Niger; flagello antennarum nigro, medio albo, apicibus tibiarum et tarsorum nigris; alis hyalinis, nervis et

stigmate nigris. °. .

Long. 9 millim.

Hab. GuatemaLa, Cerro Zunil 4000 feet (Champion).

Antenne longish, as long, if not longer, than the body, scarcely tapering towards the

apex. Head closely punctured, the face with a broad, flattish carina (broadest at the

apex) in the middle. Eyes margined, bordered with yellow in the middle in front and

behind. Thorax punctured all over, covered with a white silvery pubescence; the edge

of the pronotum, and the tubercle below the tegule clear yellow; postscutellum large,

smooth, shining, with scarcely any punctures, its sides (as are also the sides of scutellum)

carinate. Mesopleure hollowed posteriorly. Postpetiole broad, finely aciculate.

Gastroceeli large, striated. Abdomen broad, its apex somewhat acute; punctured,

except at the apex, which is rather aciculate; the punctures distinctly separated.

Metathoracic aree all defined; lateral tubercle obtuse. Legs stout, longish; coxe

punctured. Areolet converging somewhat above, but the nervures do not touch; the

recurrent nervure is received nearer the base than apex.

I. frivolus is perhaps the male of the present species; but it is stated to have the tarsi

pale ferruginous, the cheeks prominent, and the sutures of the pleuree and the base of

the metathorax black.

30. Ichneumon eros. (Tab. VII. fig. 14.)

Hab. Guatemaa, Volcan de Agua 8500 to 10,500 feet (Champion).

In coloration this species is identical with I. subpinguis, except that the apices

of the hind tibize and of the tarsi are not black, and that there is no trace of yellow

on the pronotum. The antenne are similar in form, but, if anything, thicker at the

apex; they are also ferruginous, except at the apex, which is broadly black, and the

four joints in front of the black apical joints, which are yellowish white; they are nearly

as long as the body. The eyes are bordered with yellow. The face projects in the

middle, and the clypeus projects still more, being separated from the part above it

by a transverse depression. Head and thorax finely punctured; the pleure at the

posterior end obscurely and longitudinally striated. Scutellum aciculated, convex, broad

on the disc, the sides carinate, the keels meeting on the upper part behind, but they

‘are not very distinct at the place of union. Metanotum obscurely rugose at the base,

aciculate at the apex; all the aree clearly defined; the upper median area a little

broader than long, the anterior part rounded; lateral tubercles conspicuous. Post-

petiole broad, finely punctured, the centre not raised. Gastrocceli transverse, broader

than long, smooth, shining; the extreme base of the second segment forms a ridge,

with a transverse furrow at its apex, uniting the gastroceli. Abdomen opaque,

finely punctured. Areolet nearly converging above; stigma black.

150 HYMENOPTERA.

The antenne, flattened and dilated at the apex, remind one of Joppa, but in other

respects this species agrees best with the genus Jchnewmon.

31. Ichneumon carinifrons.

Ferrugineus ; antennarum annulo facieque flavis ; flagello antennarum (annulo excepto), abdominis segmentis 2°—

4™ basi, tarsis posticis tibiarumque apice nigris; alis fusco-hyalinis, nervis fuscis, stigmate sordiderufo. 9.

Long. 15 millim.

Hab. Mexico (Bilimek) ; Panama, Volcan de Chiriqui (Champion, ¢ %).

Antenne as long as the abdomen and half of the thorax, thickened a little beyond

the middle, but narrowed again towards the apex, semiconvoluted; the base reddish.

Head punctured, not buccated ; the face with a broad keel down the centre, the keel

becoming broader towards the apex. Palpi reddish. Mesonotum closely and coarsely

punctured. Scutellum not projecting much above the mesonotum, but raised a good

deal higher than the postscutellum; laterally it is raised considerably above, and

clearly separated from the mesonotum; its sides are distinctly keeled throughout,

the keels projecting over the sides; it is strongly punctured. Pleure less strongly

punctured than the mesonotum. Metathorax broad above, with an abrupt slope

at the apex, which has a strong blunt tooth on each side; aree obsolete. Petiole

smooth, shining, hollow in the centre above, the sides carinate; postpetiole strongly

punctured on its apical half. Abdomen closely and strongly punctured all over above,

longer than the head and thorax together. Gastrocceli distinct, deep, broader than

long. Areolet 4-angled, the lateral nervures joined above.

This species comes very near to I. sycophantus, but is smaller; the latter has not

the areolet triangular above, its wings have a violaceous tinge, and are more uniformly

fuscous [the fuscous tinge in L. carinifrons being only noticeable at the stigma]; the

keel on the face is not so clearly defined; the scutellum is shorter, and has not such

an abrupt slope at the apex; the metathoracic aree are distinct, and the whole, not the

apex only as in J. carinifrons, of the postpetiole is punctured.

What appears to be the male (from the Volcan de Chiriqui) has the antennz black,

except the scape; the suture separating the meta- from the mesonotum is black; the

black bands on the abdomen are broader; and the stigma is much darker, especially at

the apex. It may, however, be the male of another species. |

32. Ichneumon celatus. (Tab. VII. fig. 13.)

Ferrugineus ; facie scutelloque flavis; abdominis segmentis 3°-5™ cingulo basali, linea pleurali, coxis posticis

subtus, femorum posticorum apice tibiarumque posticarum apice nigris; antennis nigris, basi et medio

pallide rufis; alis hyalinis, stigmate testaceo.

Long. 13 millim.

Hab. Mexico, Northern Sonora (Morrison).

Head and thorax rather strongly punctured; scutellum shining, obsoletely punc- »

tured, large, broader than long, slightly elevated. Metathoracic arez not very clearly

ICHNEUMON. 151

defined ; a blunt, not very distinct, tubercle on each side. Petiole shining, smooth, the

apex finely striated and punctured; the sides keeled; the sides of the postpetiole de-

pressed above. The rest of the abdomen punctured all over, but not so strongly as the

thorax. Gastrocceli large, a little longer than broad, finely punctured. Coxe strongly,

femora finely punctured. The black line on the pleure runs obliquely from the tegtile

to the posterior coxe. The petiole is black on the underside and at the extreme base

above. The bands on the third to fifth segments go all round, and occupy about one

third of the entire segment. As with most of the species the excavated space above the

antenne is smooth and black. The body is covered with a griseous, sparse pubescence.

Antenne one half longer than the head and thorax together, tapering towards the apex ;

the joints beyond the middle produced beneath ; third joint about one third longer

than the following. Areolet 5-angled.

Closely allied to J. maculipleuralis and I. sycophantus, but easily separated from

those species by the black apices of the posterior femora and tibie. Compared with

the latter, the scutellum is broader and flatter, and the antenne have a pale reddish

band in the centre.

33. Ichneumon forreri. (Tab. VII. fig. 15.)

Ferrugineus; flagello antennarum fusco, lineis pleuralibus, metathoracis basi et apice, petiole subtus, trochan-

teribus, femorum posticorum apice tibiarumque posticarum apice late nigris, tarsis posticis fuscis; alis

fuscis, stigmate nigro, basi albo. ¢.

Long. 8 millim.

Hab. Mexico, Ciudad in Durango 8100 (Forrer).

Head and thorax finely and closely punctured, and covered with a white pubescence ;

the punctures wider apart and longer on the pleure. Head not dilated behind the

eyes; the front broadly, but not largely, projecting in the centre; clypeus with a few

widely separated punctures. Scutellum not raised above the level of the mesonotum ;

the depression at its base deep and wide; the upper part bearing distant punctures ;

the carine scarcely extending on to the sides of the scutellum ; it is a little longer than

broad, somewhat narrowed towards the apex. Metathorax with a gradual slope,

shagreened-punctured ; the are clearly defined ; the supramedian area rounded above,

very slightly dilated in the middle at the sides, and at the apex indented by the

lower area, which occupies the whole of the front of the metanotum, and is rougher

in texture than the rest. Lateral tubercles acute. Petiole smooth and shining; post-

petiole aciculated. Abdomen closely and finely punctured all over. Gastrocceli com-

pletely obsolete. The antenne are nearly as long as the thorax and abdomen together ;

the underside of the flagellum at the apical half is brownish; the upperside of the

scape is marked with black. ‘The prosternum is almost entirely black; the meso-

sternum is broadly black at the base and narrowly black at its junction with the meta-

sternum, which is also black; the sutures between the meso- and metapleure, the scutum

at the side of the scutellum, and the space above the suture between the meso- and

152 . HYMENOPTERA.

metanotum are broadly black. Areolet 5-angled; the lateral nervures but slightly con-

verging above.

This is a smaller species than either J. celatus, or I. jalapensis; the former has the

metanotum much more hollowed in the middle, the gastrocceli visible, although not.

very distinct, and it differs otherwise in coloration; the latter has the gastrocceli very

distinct, and the tibie and tarsi white.

34. Ichneumon jalapensis.

Ferrugineus ; antennis pro majore parte, facie, scutello, tibiarum posticarum dimidio basali tarsisque posticis.

flavis; geniculis posticis tibiarumque posticarum apice late nigris; alis hyalinis, nervis nigris, stigmate.

nigro, basi albo.

Long. 10 millim.

Hab. Mexico, Jalapa (Bilimeh).

Antenne as long as the thorax and abdomen together, stout, covered with a micro-

scopic pile, the base and apex darker than the central parts, which are distinctly

yellowish. Head finely punctured, and with a broad, flat ridge down the centre of the

face. Thorax coarsely punctured. Scutellum rounded, broader than long. Metathorax.

coarsely punctured, the arez all defined, a tubercle on each side, and the apex with

a rounded gradual slope. Postpetiole rather strongly punctured, the sides depressed ;

base of second segment with longitudinal broad striations, its apex black. Gastrocceli

large, coarsely striated, rest of abdomen closely punctured. Areolet 5-angled, the sides.

but slightly converging above.

35. Ichneumon tumidulus. (Tab. VII. fig. 12.)

Ferrugineus ; abdominis segmentis 3° et 4° basi, tibiarum posticarum apice tarsisque posticis nigris ; antennis.

nigris, medio albo, basi late rufa; alis flavo-hyalinis ; nervis testaceis.

Long. 12 millim.

Hab. Mexico, Northern Sonora (Morrison).

Head rather tumid, not very largely excavated above the antenne, finely punctured.

Thorax closely and rather coarsely punctured, the punctures running into striz on the

pleure and mesonotum. Pronotum in front raised into a conspicuous margined ridge,

and in front of this, and touching the head, is a smaller ridge, forming between them

a large (comparatively) furrow, which widens as it reaches the sternum, and is trans-.

versely striated. Scutellum large, broader than long, rounded and narrowed behind, not

much raised above scutum. Metathorax large, rounded behind, the middle slightly ex-

cavated ; the aree not clearly defined; a well-defined keel over the excavated apex, and

a blunt tubercle at the side on this keel. Postpetiole broad, finely striated, the sides

scarcely depressed. Gastrocceli rather small, deep at base, finely punctured ; the rest of

the abdomen finely and closely punctured; the apex acute; cerci long, conspicuous;

ovipositor projecting beyond them, black. Coxe rather strongly punctured ; femora

less so; posterior coxe excavated on outside, the hollow transversely striated. The

suture between the meso- and metapleure is broadly black. Legs and antenne stout; the

ICHNEUMON. 153

latter involute, the joints thick, a little longer than broad; third joint a very little

longer than the fourth. The bases of the joints of the black posterior tarsi are dull

testaceous, or sometimes entirely testaceous. Areolet 5-angled, broad above.

This species is closely related to J. maculipleuralis, but is a smaller and less robust

insect, the petiole is smaller, and the gastrocceli are smaller and not striated round the

edges; the punctuation of the abdomen is stronger, and its apex is more acute ; the

terebra and cerci are longer, and the posterior tibize are black at the apex.

36. Ichneumon curtituberculatus. (Tab. VII. fig. 11.)

Ferrugineus; apice antennarum abdominisque segmentis 3° et 4° basi nigris, flagello antennarum medio flavo ;

alis flavo-hyalinis, nervis et stigmate flavis. 9.

Long. 11 millim.

Hab. Muxico, Guadalupe (Bilimez).

Head and thorax strongly, the abdomen very finely and closely, punctured. Scutellum

raised a little above the mesonotum, carinate at the base, longer than broad, narrowed

towards the apex. Metathoracic ares all well marked; supramedian area longer than

broad, the middle angled, projecting a little, scabrous. The base of the metanotum is

bordered with black, and the apex of the pronotum is yellow. Petiole smooth and

shining, bicarinate at the sides; postpetiole broad, finely and longitudinally striated.

Comes very near J. tumidulus, but that species may be known from J. curtituberculatus

by its scutellum being broader than long, flatter, not so strongly punctured, and yellowish

in colour; the supramedian area longer, narrower, and with the sides quite parallel;

the abdomen longer and more sharply pointed at the apex; and the apices of the hind

tibiee broadly black.

37. Ichneumon maculipleuralis.

Ferrugineus; thorace et abdomine nigro lineatis; alis flavo-hyalinis, nervis fuscis, stigmate testaceo. 2.

Long. 17 millim.

Hab. Mexico (Sal/é).

Head subbuccate, excavated above the antenne, the excavated part black, smooth, and

shining. Vertex shagreened ; face more shining, bearing shallow scattered punctures,

and sparsely covered with white hair. Eyes surrounded by a furrow all round, the

head projecting behind them; vertex, and sides above, covered with a fuscous pile.

Thorax covered with shallow punctures, almost shining. Metapleure striated, the suture

crenulated. Scutellum flatly convex, broadly rounded behind and before; the apex

rounded, narrower than the base, and covered with shallow scattered punctures; a deep

furrow at its base; postscutellum separated from it by a suture. Metathorax closely

punctured, large, the disc with a gentle slope, the apex subvertical, retreating in the

centre; the metathoracic aree obsolete, the lateral keels only being faintly indicated.

Petiole smooth, shining, the sides keeled at the top and bottom: the keels do not

BIOL. CENTR.-AMER., Hymenopt., April 1885. XX

PA 34

154 HYMENOPTERA.

extend to the broad apex, which is longitudinally striated in the centre and punctured

at the sides; the following segment of the abdomen is closely punctured all over and

striated at the base; the next slightly punctured; the following scarcely punctured ;

the apical impunctate, smooth, and shining. Gastrocceli large, a semiopaque furrow at

the bottom; the upper (and inner) side strongly striated. The thorax and abdomen

are covered with a greyish pubescence. ‘The following parts are black :—the sternum

entirely, the sutures of the pleure, the space above the cox, the pronotum on the disc in

front, the scutellum and postscutellum all round, the lower part of the metanotum, the

third, fourth, and fifth abdominal segments at the base above, and the sheath of the

ovipositor at the apex. Legs stout. Coxe obscurely punctured; the posterior pair

hollow on their outer side. Areolet 5-angled, longer than broad; recurrent nervure

received nearer the apex than base.

A stout robust species.

88. Ichneumon platyaspis.

Hab. Mexico, Chapultepec (Bilimeh).

In size and sculpture this species agrees with J. maculipleuralis, as it does also in

coloration, except that there is no black on the thorax, while the apices of the posterior

tibie are black. The face is densely covered with reddish-yellow hair, which almost

hides the punctuation. The pleure are neither so shining nor so smooth; the meso-

pleure are longitudinally striated on the lower side. The supramedian area of the

metathorax is broader, and the gastroceeli are shallower and much less distinct.

39. Ichneumon impudicatus.

Ferrugineus; facie, orbitis oculorum, abdominis segmentis 1°-4™, apice coxisque anterioribus subtus, flavis ;

abdominis segmentis 2°-4™ basi nigris; tarsis pallide flavis; alis hyalinis, nervis et stigmate ferru-

gineis. 9.

Long. 16 millim.

Hab. Mexico (bilimek).

Head somewhat dilated behind the eyes; the face bluntly projecting in the middle,

and closely punctured all over. Thorax coarsely punctured all over; closely covered

with a black or fuscous pubescence on the disc, the sides with paler pubescence. There

are two furrows in front of the mesonotum running to the pronotum. Scutellum convex,

narrowed behind, the sides in front bluntly cariate. Metanotum with a gradual slope,

depressed in the centre, coarsely punctured, the punctures running into reticulations at

the sides and apex. The upper median area is a little broader than long, the sides

dilated in the middle, the apex open; the lateral keels of the supramedian area, and

the lateral tubercle also, are almost obsolete. Petiole carinate, the postpetiole depressed,

at the sides; both are smooth, shining, and obscurely aciculate. Gastrocceli deep, longer

than broad, contracted at the base, and coarsely striated. The remaining abdominal

segments are coarsely and closely punctured all over; the black band on the second

ICHNEUMON. . 155

segment is broad, and occupies more than two thirds of the surface, the other bands

are narrower.

The antenne, except the scape and the two basal joints of the flagellum, are unfor-

tunately wanting in the single specimen before me; the former is ferruginous in colour ;

the latter black, reddish beneath. ‘The tegule, the tubercle below them, the sutures of

the pleure, the mesosternum, the apex of the scutellum, and the postscutellum are

yellowish. The metanotum behind has a yellowish tinge.

Compared with J. platyaspis, the present species has a longer and narrower abdomen,

the metanotum is not so much hollowed in the centre, the postpetiole is not longitu-

dinally striated, and the scutellum is much more convex ; the same characters separate

it equally well from J. maculipleuralis. The form of the areolet is nearly the same in

the three species.

40. Ichneumon consanguineus.

Rufo-testaceus ; flagello antennarum, vertice lineisque 2 mesonoti nigris; alis hyalinis, nervis nigro-fuscis. 3.

Long. 14 millim.

Hab. Mexico (Sallé).

Head subbuccate, obscurely punctured, deeply excavated above the antenne, the exca-

vation smooth, shining, and divided in the middle. Thorax punctured. Scutellum

subconvex, but little elevated, smooth, shining, impunctate, the sides arcuate. Meta-

notum with the ares obsolete; a short blunt tubercle on each side. Petiole smooth,

shining ; postpetiole punctured, a slight furrow along each side above. Gastroceeli

shallow, situated at a little distance from the base of the segment, transverse, and finely

punctured. Abdomen punctured, pilose; apex bluntly acuminate. Coxe punctured ;

the long spur of the posterior tibie reaching beyond the middle of the metatarsus.

Areolet 5-angled. The black on the vertex is rather obscure ; the two longitudinal lines

on the mesonotum are broad and extend from the scutellum to beyond the tegule; and

there is a curved black mark at the extreme base touching the pronotum. The colour

of the abdomen, compared to that of the thorax, is rather obscure, but this is probably

owing to accidental discoloration.

41. Ichneumon salvini, (Tab. VII. fig. 16.)

Rufo-testaceus ; linea pronoti, facie, orbitis oculorum, tegulis scutelloque flavis; scapo antennarum testaceo,

flagello medio albo. 9.

Long. 134 millim.

Hab. GuateMata, San Gerénimo (Champion).

Antenne a little longer than the abdomen, somewhat thickened beyond the middle

and compressed, the joints there broader than long; the apex acute. Head buccate;

cheeks full; vertex obscurely punctured. Mesonotum obscurely punctured. Scutellum

convex ; the base broader than the apex, the latter subtruncated; sides abrupt, and

xx 2

156 HYMENOPTERA.

slightly concave. Metathorax coarsely and closely rugose, the apex almost reticulated ;

tubercles blunt, inconspicuous ; arez obsolete. Petiole smooth, shining, impunctate ;

the apex of the postpetiole with some punctures. Gastrocceli large, moderately deep,

longer than broad. Abdomen closely punctured ; the base shining, impunctate; the

apex finely punctured, acuminate; sheath broad, projecting, issuing from the base of

the sixth segment, pilose, the apex black. The head and thorax are sparsely pilose ;

the hair on the metathorax is longer than on the mesothorax, that on the abdomen is

much closer and longer, especially at the apex. The metathorax is tinged with yellow,

as are also the belly, the pronotum, and the legs at the base; the tubercle beneath

the wings is also yellow; the apical joint of the posterior tarsi is black. Wings short ;

areolet d-angled ; stigma testaceous; nervures blackish.

42. Ichneumon causticus. (Tab. VIII. fig. 3.)

Rufo-testaceus ; flagello antennarum nigro, medio lete albo, orbitis oculorum flavis; alis subfumatis, stigmate

testaceo. 9.

Long. 13 millim.

Hab. GuaTEMALA, Zapote (Champion).

Antenne semi-involute, thick, the third joint a very little longer than the fourth.

Head not buccate, the front but little projecting; clypeal foveee deep. Head and thorax

closely, the pleure longitudinally, punctured. Scutellum flat on the disc, the sides

carinate. Metathorax with a gradual slope; the arez distinct ; the supramedian area

broader than long; the tubercles blunt. Petiole long, straight, and shining ; postpetiole

with a few punctures. The rest of the abdomen shining, and finely punctured. Gas-

troceeli shallow. Legs stout; coxe punctured. Areolet 5-angled, narrower above ; its

outer nervure almost obsolete.

Almost identical in coloration with J. salvini, but a broader and stouter insect.

The antenne are stouter, and not compressed and dilated beyond the middle; the

abdomen is shorter and broader; the petiole is longer; the metathoracic arez are all

distinct ; and the wings have a well-marked smoky hue.

43. Ichneumon additus.

Ichneumon additus, Cresson, Proc. Acad. Phil. 1873, p. 114. no. 12 (fg)?

Hab. Mexico, Orizaba! (Sumichrast).

——— 44, Ichneumon citrinus.

Ichneumon citrinus, Cresson, Proc. Acad. Phil. 1878, p. 114. no. 13 (od).

Hab. Mexico, Orizaba 1 (Sumichrast).

45. Ichneumon izucarus.

Ichneumon izucarus, Cresson, Proc. Acad. Phil. 1873, p. 114. no. 14(¢, 2)}.

Hab. Mexico, Orizaba, Cordova! (Sumichrast).

ICHNEUMON. 157

46. Ichneumon arrogans.

Ichneumon arrogans, Cresson, Proc. Acad. Phil. 1873, p- 115. no. 15(¢, 9)".

Hab. Mexico, Orizaba, Cordova! (Sumichrast).

47. Ichneumon godmani. (Tab. VII. fig. 18.)

Ferrugineus ; pleuris, metanoto, abdominis segmentis basi (petiolo fere toto), coxis, trochanteribus, femoribus,

tibiis metatarsisque posticis nigris; medio antennarum flavo-testaceo; alis fumatis, medio stigmateque

flavis. ¢.

Long. fere 15 millim.

Hab. Guatema.a, San Geronimo (Champion).

Scabrous, covered with a white pubescence. Head buccate, slightly excavated above

the antenne ; eyes surrounded by a furrow; clypeus rounded at the sides, transverse

at the apex. Scutellum not much elevated above the scutum, rising to the centre equally

from the base and apex, but more sharply from the former, smooth, shining, and covered

with large punctures. Metanotum coarsely punctured, smooth and shining on either

side of the upper median area: this is longer than broad, dilated at the sides, of equal

breadth at the base and apex, and has a short area at its base. The metanotum has a

gradual slope, and the lower median area is excavated. Petiole smooth, shining, hollow

in the centre, the sides keeled, the keels projecting into the middle of the postpetiole,

which is covered with large clearly separated punctures. Gastrocceli large, double as wide

as long. The rest of the abdomen, like the thorax, scabrous; the segments contracted

at the base. The four anterior legs are of a lighter ferruginous tint than the rest of the

body; the four apical joints of the tarsi are yellowish testaceous, the spurs blackish.

The flagellum is slightly dentated on the underside; the base and apex of the flagellum

tend to fuscous on the upperside. |

Easily known from the other species of this group by the black pleure. As in the

allied species, there are no tubercles on the metathorax.

48. Ichneumon melanopoda.

Ferrugineus ; antennarum apice, coxis posterioribus, femoribus, tibiis posticis, metatarsis, abdominisque seg-

mentis basi nigris; alis fuscis, medio stigmateque flavis. <.

Long. 13 millim.

Hab. Guatemaua, San Gerénimo (Champion).

Scabrous, covered with a griseous shining pubescence. Antenne as long as the

abdomen and half the thorax united, stout ; the apical joints produced on the underside ;

covered with a pale pubescence; the third joint one fourth longer than the following.

Head dilated behind the eyes; the face rather flat, scarcely projecting in the centre.

Scutellum with the sides abrupt, the centre with a gradual slope on ejther side.

Metathorax large, gradually sloping to the base of the abdomen, the centre slightly

hollowed; the arez almost obsolete; and without tubercles. Petiole a little depressed

158 HYMENOPTERA.

in the centre, smooth, shining, the sides keeled ; postpetiole closely covered with large

punctures. The rest of the abdomen is more strongly scabrous than the thorax; the

segments are contracted at the base; towards the apex the black at the base of the

segments becomes less and narrower in the middle. The anterior femora are more or

less ferruginous; the black on the underside of the middle pair inclines to piceous.

The knees are all ferruginous. The tibie (except the hind pair) are of a lighter

ferruginous colour than the rest of the body; the spursare also of this colour. Areolet

5-angled, a little narrower on the upperside; the recurrent nervure is received beyond

the middle; the yellow band extends from the base to a little beyond the apex of

the stigma.

Closely related to Z. godmani, which may be easily known from the present species

by being longer and stouter, by the metathorax being black, and by the metathoracic

aree being all clearly traced. The abdomen is not so strongly scabrous, and the

antenne are yellowish in the middle.

49. Ichneumon panamensis. (Tab. VIII. fig. 4.)

Ferrugineus ; antennis, abdominis basi, pedibusque posterioribus nigris ; antennarum medio apiceque tarsorum

flavis; alis nigris, medio stigmateque flavis. <.

Long. 13 millim.

‘Hab. Panama, Volcan de Chiriqui 4000 to 5000 feet (Champion).

Very near to I. melanopoda, and not differing from it in sculpture and clothing; but

it is broader both in the thorax and abdomen; and the latter has only the base of the

petiole black. The antenne are longer and yellow in the centre; the tips of the tarsi

are yellow; the four anterior tibiz are yellow in front; the suture separating the meso-

and metathorax is black; and the wings are much blacker in tint.

It is too large to be the male of I. lymphatus, which has, besides, the four anterior

legs entirely ferruginous, and the hind tarsi almost entirely black; the petiole, too,

bears no black, nor does the suture of the metanotum, while the gastroceli are more

distinct, these in J. panamensis and J. melanopoda being obsolete.

50. Ichneumon lymphatus. (Tab. VII. fig. 19.) -

Ferrugineus ; apice antennarum pedibusque posticis nigris; alis faumatis, medio flavo-hyalinis, stigmate flavo. 9.

Long. 9 millim.

Hab. Guatemata, San Gerénimo (Champion).

Strongly punctured, covered with a fuscous pubescence. Head buccate; face with a

pale longish pubescence; eyes with a distinct narrow border all round. Scutellum

moderately elevated ; sides keeled in front, indistinctly keeled behind. Postscutellum

broad, finely and longitudinally striated. Metathoracic arez clearly defined behind,

hollow in the middle. Petiole bicarinate on either side, the keels extending to the

base of the postpetiole, which is strongly punctured; sides of the petiole with a row of

ICHNEUMON. 159

large punctures. Gastrocceli transverse, narrow, and aciculate. Abdominal segments

constricted at the base, all strongly punctured; sheath of ovipositor projecting, black.

Coxe and femora strongly punctured. The base of the antenne is of a brighter tint

than the body, and it changes to a yellowish hue towards the middle. Wings shortish ;

areolet 5-angled, square above. The black colour of the hinder legs is not quite pure,

being suffused more or less with ferruginous.

———_ 51. Ichneumon cupidus.

Ichneumon cupidus, Cresson, Proc. Acad. Phil. 1878, p. 115. no..16 (¢, ?)}.

Hab. Mexico, Orizaba } (Sumichrast).

52. Ichneumon championi. (Tab. VII. fig. 17.)

Ferrugineus ; pedibus posterioribus, abdominis segmentis 2°-3” basi antennarumque apice nigris, his medio flavis ;

alis flavo-hyalinis, basi fuscis, stigmate testaceo. 9°.

Long. 18 millim.

Hab. Guatemata, San Geronimo (Champion).

Head subbuccate, excavated above; clypeus transverse, rounded at the sides.

Antenne closely punctured. Thorax closely punctured, the sides wrinkled. Scutellum

but little raised above the mesonotum, not much longer than broad, rounded at the base

and apex; the sides not clearly separated from the scutum, the disc sparsely punctured. |

Metanotum punctured at the base, the rest wrinkled and irregularly punctured; the

arese not quite clearly defined. Postscutellum longitudinally striated, obscurely punc-

tured at the sides. Petiole smooth, shining, the sides margined. Abdominal segments

9-4 closely, apical faintly, punctured; the base of the second segment reticulate-striate.

Gastroceeli large, deep, smooth, and shining. Legs long, the posterior pair being longer —

than the body; the four posterior coxee more or less ferruginous above; the anterior and

the middle trochanters more or less black. The first seven joints of the antenne are

ferruginous, the eighth to the fourteenth yellow, the rest black; the third joint is not

much longer than the fourth. The costa, except at the extreme apex (which is testa-

ceous), is black. The bases of the second and third abdominal segments are black; the

centre of the fourth segment broadly, and the apical one also more or less, black.

Areolet deltoidiform.

53. Ichneumon munerosus. (Tab. VII. fig. 10.)

Ferrugineus ; apice antennarum, femoribus posticorum apice tibiisque posticis (basi excepta) nigris; tarsis

posticis flavis ; alis hyalinis, fusco-bifasciatis, nervis flavis. <¢.

Long. 15 millim.

Hab. Mexico, Northern Sonora (Morrison).

Head and thorax closely but not strongly punctured, covered with a white, partly

fuscous, pubescence. Head not very robust, rather long in front, the face projecting

160 HYMENOPTERA.

in the middle; behind it is entirely black; the ocelli are in a black spot, and from

this a thin black line runs to the black excavated part over the antenne. The orbits

of the eyes are faintly yellowish. Mandibles yellowish laterally, their apices blackish.

Scutellum not very much raised over the mesonotum, but considerably raised above the

postscutellum ; covered with long fuscous hair. The metathorax has a gradually rounded

slope to the petiole, and is covered with a silvery white pubescence. Metathoracic

areee entirely obliterated. The sutures of the pleure, and the metasternum, are black.

Petiole long, slender, not much dilated at the apex, smooth, shining, and impunctate ;

the rest of the abdomen is smooth, shining, and scarcely punctured. Antenne stout,

nearly as long as the thorax and abdomen together, tapering gradually towards the apex,

covered with a microscopic pile; third joint distinctly longer than the fourth. Areolet

square above, beneath but slightly angled in the middle. ‘The apices of both wings are

black ; in the anterior pair a yellow band runs obliquely from the stigma to the apical

dark cloud, and there is another band before the middle. Legs long.

54. Ichneumon guatemalensis. (Tab. VII. fig. 20.)

Ferrugineus ; coxis, femoribus, abdominis dorso pro majore parte apiceque antennarum nigris; medio

antennarum tibiisque proparte flavis; alis flavo-hyalinis, costa et stigmate testaceis. 9.

Long. 14 millim.

Hab. GuaTEMALA, Purula in Vera Paz (Champion).

Head wrinkled, subbuccate, excavated above; antenne covered with white hairs;

eyes margined on the-inner side, a furrow surrounding them on the outer side.

Clypeus rounded at the sides, transverse at the apex ; a large fovea on either side above.

Thorax closely punctured above, the sides wrinkled, obscurely reticulated at the edges.

Scutellum moderately elevated, a deep depression at the base, which is slightly rounded,

the sides straight; closely punctured. Scutum at the sides of the scutellum striated,

but not throughout. Postscutellum longitudinally striated, the sides punctured.

Metanotum closely and irregularly reticulated, the aree distinct. Petiole smooth,

shining, the apex hollow and reticulated, margined at the sides. The other

abdominal segments closely punctured; the apex faintly punctured, subovate; —

Segments seven and six together nearly as long as the fifth, which is about one

fourth shorter than the fourth; second segment one third longer than the third. The

base of the antenne to the sixth joint ferruginous; joints 6-18 yellow, inclining to

ferruginous at the base and apex; the second joint is not much longer than the

third, which is a little longer than the fourth. The vertex is for the most part black

in the centre; the greater part of the mesonotum on either side of the scutellum,

the base of the metanotum and its postmedian area, the sutures of the pleure, the

petiole [except at the extreme apex], and the abdominal segments [except at the

apex], the coxe and femora, black. The tibie are ferruginous at the base all round;

the anterior pair are yellow in front and behind not far from the base, the rest being

ferruginous; the middle pair have a yellow band in front of the middle; and the

ICHNEUMON. | 161

posterior pair are yellow (except at the extreme base), and have a broader ferruginous

space at the apex. On all parts of the body the black runs into ferruginous; on either

side, at the apex, the postpetiole is yellowish, as is also the apex of the second segment

at the side. Legsrobust. Anterior tibiz curved at the base. Areolet broad above, but

the lateral nervures still converging ; the recurrent nervure is received a little beyond

the middle.

55. Ichneumon opiparus.

Brunneo-rufus; antennarum scapo medio, abdominis segmentis 1°-3™ apice tibiarumque dimidio basali, flavis ;

alis flavo-hyalinis, stigmate testaceo. 9.

Long. 14 millim.

Hab. Mexico (Bilimek).

Head and thorax opaque, coarsely granulated, closely covered with a pale pubescence ;.

clypeus strongly punctured, foveate at the base on either side, the part above it broadly

projecting in the middle. Scutellum slightly elevated above the mesonotum, clearly

raised from the sides, carinate at the base, longer than broad, narrowed towards the apex,

which has a gentle slope. Metathorax rugose ; supramedian area distinct, longer than

broad, narrowest at the apex; the other aree not defined, except indistinctly at the base ;

the apex has an almost perpendicular slope, and is hollowed in the centre ; the lateral

tubercles blunt, but distinct. The centre of the posterior part of the metathorax is

brownish red like the rest of the body (the red forming a broad straight line) ; on either

side of this, and extending a little on to the pleure, the colour is pale yellow. Petiole

black, smooth, and shining ; the carine well defined at the apex; postpetiole longitu-

dinally and strongly striated. The rest of the abdomen is finely and closely punctured ;

the base of the second segment longitudinally striated. Gastrocceli broader than long,

shining and aciculate in the middle. The apices of the first, second, and third segments

are yellow, the remaining part for the greater extent black; the apical segments are

obscure dull red. The pronotum is narrowly edged with obscure yellow. The antenne

beyond the broad yellow portion are almost black. The yellow on the four anterior tibie

is not so distinct behind as it is on the front ; the sutures of the pleure are yellowish

for the most part. Areolet 5-angled, broad above, the lateral nervures but slightly con-

verging. The body is more densely pilose and more opaque than in the preceding species.

56. Ichneumon tepidus.

Sordide rufus ; sterno abdominisque segmentis basi late nigris ; alis flavo-fumatis, nervis testaceis. ¢.

Long. 15 millim.

Hab. Mexico (Bilimek).

Head (except the face) and thorax opaque, closely punctured and covered with a

dense pale pubescence. Pleure longitudinally punctured, the punctures almost forming

striations. The basal half of the antenne, the four anterior legs, the basal half of the

“hind tibia, the hind tarsi, and the apices of the first to the fourth (the second very

BIOL. CENTR.-AMER., Hymenopt., April 1885. YY

162 HYMENOPTERA.

broadly) abdominal segments rufous, running, however, imperceptibly in some places, into

the dark brownish-red colour of the body; this last colour again on the thorax and

head running into black. The antenne are scarcely so long as the abdomen and thorax

together; the joints are not much serrated. Metathorax coarsely punctured, the punc-

tures forming irregular reticulations at the base; the apex has a rounded and gradual

slope; the aree are not clearly defined, the keels running into and becoming confused

with the punctuation; the sides are light rufous, the centre darker; there are no

lateral tubercles. The sides of the postpetiole are punctured, the centre longitudinally

striated. The rest of the abdomen finely and closely punctured. Areolet 5-angled,

longish ; the sides converging towards the top.

I. tepidus is a very close ally of I. opiparus, but the latter may be known from it by

the apex of the metathorax having an abrupt slope (not rounded at the upper part as in

I. tepidus), the centre too being distinctly hollow. In J. tepidus the punctuation is

stronger over all the body; the wings clearer; the areolet compared to its breadth

shorter, and wider at the upper part; and the pubescence is denser.

57. Ichneumon sallei.

Niger ; facie, orbitis oculorum, scutello pedibusque rufo-flavis ; coxis trochanteribusque flavis ; femoribus posticis

fere totis, apice tibiarum coxisque posticis, nigris ; abdomine fulvo, segmentis 3°-5" margine basali basique

nigris ; alis flavo-fumatis, costa et stigmate fulvis. ¢.

Long. fere 16 millim.

Hab. Mexico (Sallé).

Head and thorax covered with white glistening hair. Vertex coarsely punctured,

face obscurely aciculated. Above the antenne the front is deeply excavated, smooth,

and shining ; below the antenne the head is entire fulvous yellow; on each side of the

clypeus above is a round fovea; the yellow border along the eyes scarcely reaches to the

ocelli. Scape yellow beneath, black above; [flagellum broken off |. Pronotum project-

ing, the side of the collar hollow, bordered behind ; the middle of the pronotum fulvous

above. Thorax coarsely punctured. Scutellum raised, smooth, and shining; subtrun-

cated before and behind, much broader behind than at the apex. Metathorax with a

gradual slope, and hollow in the middle behind. Petiole shining, faintly aciculated ; the

apex with a few punctures; the centre hollow, the hollow carinated, the keels extending

to near the apex. Abdomen obscurely aciculated. Gastrocceli broad, large, finely

aciculated ; the bands on the third, fourth, and fifth segments are broad. The coxe

(especially the posterior pair) are punctured, but not very closely; the sides hollow

and shining; the anterior pair black above and behind. The posterior trochanters are

black at the base on the inner side.

It is possible this may be the male of J. ¢llacessitus, but, apart from the difference in the

coloration of the posterior legs, the four anterior coxe are yellow. The scutellum is

longer compared to its width, and narrower at the apex. The petiole is not so shining

above, and it is, if anything, longer, and more pubescent.

ICHNEUMON. 163

58. Ichneumon illacessitus. (Tab. VII. fig. 21.)

Niger ; antennis (apice excepto) pallide rufis; scutello et postscutello flavis; facie, orbitis oculorum, abdomine

(basi et segmentis 3°-4™ margine basali exceptis), pedibus (coxis exceptis) rufis; alis flavo-hyalinis, tegulis,

costa stigmateque luteis, nervis pallide testaceis. 9.

Long. 12 millim.

Hab. Mexico, Ciudad in Durango, 8100 feet (Forrer).

Antenne stout, involute; beyond the middle the red colour becoming much paler.

Head large, buccate, coarsely punctured; above covered with short, thick, blackish

hairs; the face with white glistening hair; there is a fovea on either side of the

clypeus above; the front immediately above the antenne is deeply excavated, smooth

and shining, the centre of the hollow aciculated; the red border along the orbits

extends to the ocelli; immediately below the antenne there is a small black space,

the remaining portion below this is red. Thorax opaque, coarsely punctured all over,

covered with a white glistening pile. Prothorax projecting in front, with a distinct

neck separated from the part behind, which rises gradually from it; the sides hollowed

in front; the centre of the pronotum red. Scutellum flat, truncated behind, broadly

rounded in front, broader than long. Metathorax with a gradual slope to the apex,

which is almost perpendicular and hollow in the centre. Upper median area longer

than broad, the sides nearly straight; lower area scarcely defined. The other ares

indistinct. Petiole aciculated and punctured at the sides and apex; the centre at the

base hollow, smooth, and shining; this channel with the sides carinate, the keels

extending to the apex, but becoming less distinct as that is reached. The abdomen is

aciculated and covered with pale pubescence from the second segment; second segment

with a well-defined margin at the base, the margin not quite extending to the middle,

where it becomes confluent with the rest of the segment ; separated from the petiole by

a deep groove. Gastrocceli longish, narrow, striated. Legs (especially the femora)

stout ; tarsi covered beneath with stiff hairs; coxe punctured; anterior trochanters

black. Areolet 5-angled, large ; the upper side barely one half of the length of the

lower side, which is not acutely angled.

59. Ichneumon turpiculus. (Tab. VII. fig. 22.)

Niger ; facie, ore, palpis, scapo, pedibus anterioribus (basi excepta), trochanteribus posticis, femorum posticorum

basi, tibiarum posticarum dimidio basali, tarsis, scutello metanotoque postice, flavis; abdomine ferrugineo,

basi segmentis 1°-5™ nigris ; alis flavo-hyalinis, stigmate fulvo. 3.

Long. 17 millim.

Hab. Muxico, Puebla (Bilimek).

Antenne stout, tapering at the apex, covered with a microscopic pile, the third jomt

nearly as long as the two following joints together; the scape broadly marked with

black above. Face flat, but slightly projecting in the middle at the upper part.

Mandibles yellow, black at the apex. The eyes are bordered on the inner side to near

the ocelli. The head is covered with large punctures and with longish hair, and retreats

| ry 2

164 HYMENOPTERA.

behind the eyes. Thorax coarsely punctured, and covered with a pale pubescence. Scu-

tellum flat, narrowéd considerably behind, where it is truncate. Metathorax depressed

in the centre, the aree all distinct—the supramedian a little longer than broad, and

almost truncate at the base and apex ; postero-median all present, the central with straight

sides; the portion behind the apex of the supramedian is yellow to the extreme apex of

the metanotum. The petiole is black, as is also the base of the postpetiole ; it is longi-

tudinally striated, and yellow at the apex. Abdomen closely punctured, its apex rather

blunt; the black band on the second segment is behind the gastrocceli, which are

shallow and indistinct, and is less distinct than upon the others, being almost divided

into three; the bands on the third and fourth occupy nearly half the segment, on the

fifth more than the half. The tegule and a spot in front, the tubercle below them, and

the prothorax in front above are clear yellow. Areolet 5-angled, the sides narrowing

towards the upper part.

60. Ichneumon sublutus.

Hab. Mexico (Sal/lé).

In coloration this species agrees with the preceding, except that the antenne have a

broad reddish band in the middle. The mark on the metathorax is ferruginous, not

yellow, the apex of the postpetiole being also of this colour. The four front coxe are

entirely yellow behind. The scutellum is broader than long, not longer than broad, as in

L. turpiculus. The thorax is not so densely pilose. The gastrocceli are more distinct,

transverse, and finely aciculated ; and there is no black on the second segment. The fifth

and following segments are missing in the specimen (¢ )beforeme. Another good mark

of distinction is that the third joint of the antenne is not much longer than the fourth.

A smaller species than J. turpiculus.

61. Ichneumon multiplagiatus. (Tab. VIII. fig. 5.)

Niger, flavo-maculatus ; abdomine rufo, basi nigro et flavo maculato ; pedibus flavo-testaceis, femoribus tibiisque

nigro-lineatis ; alis hyalinis, stigmate testaceo. 9.

Long. 15 millim.

Hab. Guatemata, San Gerénimo (Champion).

Closely punctured, but not strongly on the head and thorax. Antenne stout, semi-

involute, a little thickened and compressed beyond the middle. Front projecting in the

centre ; clypeal fovee large and deep, a shallow furrow joining them. Eyes bordered

all round. Hollow above the antenne deep, smooth, shining, black, the black con-

tinued as a broad band to the back of the head, which is entirely of that colour. There

is a broad black band on the pronotum and on the side of the prosternum. Mesonotum

black, except two straight narrow lines running from the middle to the pronotum, and

two curved ones from the scutellum to the tegule. Scutellum flat, broad, not much

longer than broad, and not much narrowed towards the apex; black, the sides and

apex bordered with yellow; there are two yellow marks at the base, joining the above-

ICHNEUMON. 165

mentioned lateral lines. On the mesopleure is a large black mark under the wings,

with a large yellow space in its centre. There isa small black mark at the apex of

the mesosternum ; the sutures joining the meso- with the pro- and metathorax are

broadly black. Metanotum black, except two square marks at the base touching the

suture, where they are prolonged a little laterally, and a longish mark on either side of

the lower median area which bounds them. A large and somewhat roundish mark,

bounded with black, on the metapleure. The upper median area smooth, shining,

impunctate, united to the lower median area, the sides of which are distinct. Petiole

hollow in the centre, the sides keeled; the keels continued to the middle of the post-

petiole, which is coarsely punctured; black, except a large yellow mark on either side

at the apex. Abdomen coarsely and longitudinally punctured ; the second segment

almost striated, its basal three fourths black ; the apex reddish, yellowish at the sides ;

the basal half of the third segment black, the rest of which and the remaining segments

reddish ; the segments are a little contracted at the base; the apex acute, pilose; the

sheath of the ovipositor black. The four anterior legs are entirely yellow on the under-

side; the tarsi inclining to fulvous; the tibiee black above; the femora also black, and

with a longish clear yellow line in the centre of the black part. The posterior femora

are broadly black above, yellow like the anterior pairs in the centre, and black also at

the apical half on the underside; the apical half of the tibie black on the outer side;

for the rest, as also the hind tarsi, fulvous, inclining to yellowish. Coxe marked

(slightly on the front pairs) with black on the outer side. The trochanters black at the

base; the hind pair also at the apex. Areolet 4-angled, triangular above.

The male has the antenne without the white ring found in the female, and the black

on the legs is more irregularly distributed ; the abdominal segments are black, reddish

yellow at the apex, the two apical ones entirely reddish.

62. Ichneumon suffrageneus. (Tab. VIII. fig. 13.)

Niger; pleuris pro parte, scutello metanotoque (maculis 2 basalibus exceptis) flavis ; alis hyalinis, stigmate

nigro. 9.

Long. 19 millim.

Hab. GuatuMaa, Zapote (Champion).

Antenne nearly as long as the body. Head slightly punctured ; palpi, mandibles,

clypeus, face, and orbits broadly (but the yellow is not continuous, being interrupted a

little near the ocelli and behind) yellow. Thorax slightly punctured. Prosternum, a

line on the pronotum, the tegule, the tubercle below them, two marks in the centre of

the mesonotum, scutellum, postscutellum, sternum, the greater part of the mesopleura

(all below the hollow, except where it projects a little at the head of the latter), a mark

under the hind wings, a large mark on the metapleura, a small mark at the side near

the base of the metanotum (curving round the spiracle), and a band down the centre

[this is continued to the apex, and laterally from the middle], yellow. Scutellum large,

flat, broad, with some shallow punctures; at the apex is a transverse furrow, behind

166 HYMENOPTERA.

which the scutellum is narrowed. Mesonotum strongly punctured, the middle transversely

striated ; areze obsolete ; the apex but very slightly hollowed in the middle. Petiole

smooth, shining; postpetiole punctured, longitudinally striated. Grastrocceli small,

yellow. Abdominal segments longitudinally punctured.

63. Ichneumon opiniosus. (Tab. VIII. fig. 11.)

Flavus ; pronoto (linea laterali excepta) mesonoto maculisque 2 metanoti nigris ; pedibus fulvo-testaceis, femori-

bus supra nigro-lineatis; alis hyalinis, stigmate testaceo. 9.

Long. 18 millim.

Hab. Mexico, Valladolid in Yucatan (Gawmer).

Antenne porrected, pilose; basal joints of the flagellum longer than broad, the

apical joint broader than long, semidentate. Head punctured, the vertex and hinder

part black; clypeal fovee distinct ; the clypeus projecting out from the front at

the base and forming a semicircular ridge uniting the fovee, the apex a little pro-

jecting. Thorax punctured; prosternum, a line on the pronotum, tegule, two short

lines on the middle of the mesonotum, scutellum, the suture of mesonotum, post-

scutellum, pleure (except a curved line below the wings), and sternum, yellow. Meta-

notum yellow, except two broad lateral marks, issuing from the base, and a mark in the

centre, black. Scutellum with the sides and apex rather abrupt, the top flattish,

punctured, but not closely. The apex of the metanotum is not much hollowed and

is somewhat abrupt; tubercles distinct. Petiole smooth, shining, postpetiole punc-

tured; the rest of abdomen closely punctured. Gastrocceli longer than broad, striated.

64. Ichneumon trunculentus. (Tab. VIII. fig. 12.)

Long. 18 millim.

fab. GUATEMALA, San Geronimo (Champion).

In coloration nearly identical with [. opiniosus, but wanting the two yellow marks

in the middle of the mesonotum, and having instead one at the side of the tegule; the

antenne shorter ; the scutellum and the base of the metanotum impunctate ; the basal

segments longer and narrower; the apex of the metathorax not hollowed at the sides, &c.

Antenne porrected, pilose. Head behind and on the vertex black; clypeal fovee

deep ; face rather flat, obsoletely punctured. Thorax smooth, shining, almost impunc-

tate, densely pilose. Prosternum, a line on the pronotum, the tegule and a broad mark

at their side, the scutellum, postscutellum, sternum, pleure, and metanotum (except

two large marks at the base), yellow. Scutellum with the sides abrupt, keeled;

narrowed behind, longer than broad. Metathoracic ares obsolete at the base, which

is smooth, impunctate, and shining; the rest obscurely reticulated; the apex is not

hollow and has a semi-perpendicular slope. Petiole smooth, shining, impunctate.

Postpetiole black, except at the apex; the sides punctured. Gastrocceli shallow, longer

than broad, impunctate. The abdominal segments punctured, except at the apex ;

black, except at the apex and beneath.

ICHNEUMON. 167

65. Ichneumon democraticus. (Tab. VIII. fig. 10.)

Niger ; sterno, pleuris, macula mesonoti scutelloque, flavis; pedibus flavis, femoribus tibiisque supra nigro-

lineatis ; alis hyalinis, stigmate nigro, medio testaceo. 2.

Long. 16-17 millim.

Hab. Guatemata, San Gerénimo (Champion).

Head and thorax punctured. Metanotum transversely, the collar obliquely, striated ;

the pleurzee more strongly punctured than the upper part of the thorax, and covered

with fuscous or fuscous-black pubescence. Antenne semi-involute, as long as the

abdomen and the metathorax together; a little thickened and compressed beyond

the middle. The head is black in the centre above the antenne, and entirely so

behind ; with a broad transverse furrow below the lower ocellus. The pronotum is

broadly black in the centre; there is a longitudinal black mark below the tubercle

under the tegule, and from it one of nearly equal length runs along the hollow in the

mesopleura. The mesonotum is black save an indented mark on either side in front, a

transverse mark (narrower in front and behind) in the centre, and two small marks

in front of the scutellum. The scutellum and postscutellum are yellow; the former

is longer than broad, narrower in the centre and at the apex, and slightly raised in

the centre. The suture separating the meso- from the metanotum is black; on either

side of the latter two large marks, double as long as wide, and bulging out in the

middle, run from this suture to a little beyond the middle, and an oblique, narrower

line runs from its basal third ; at the extreme apex in the middle is a small triangular

black mark. The metathorax has a gradual slope and has neither are nor tubercles.

Petiole black beneath, yellow above ; postpetiole black, strongly punctured. Abdomen

strongly, longitudinally punctured; segments 2—5 with a broad black band, mostly

narrowed at the base or apex; longer than the head and thorax together; the apex

acute; the sheath of the ovipositor black, projecting. Gastrocceli shallow. On the

four anterior femora, tibie, and tarsi there is a black line on the upper side, and

broader one on the posterior femora and tibie and on the base of the tarsi. There

is a broad, somewhat irregular mark in the centre of the posterior coxe, this line-like

mark being continued on to the basal part of the trochanter.

66. Ichneumon valladolidensis. (Tab. VIII. fig. 9.)

Niger; linea pronoti, pleuris pro majore parte, maculisque 2 magnis metanoti flavis ; pedibus fulvo-flavis,

apice femorum et tibiarum posticarum nigro. 9.

Long. 13 millim.

Hab. Mexico, Valladolid in Yucatan (Gawmer).

Antenne involute, thick. Head behind and the vertex broadly black; broad,

punctured, shining; clypeal foveze deep; clypeus with a small incision in the centre at

the apex. Thorax punctured, but not deeply or closely. The edge of the pronotum

broadly, the tegule, a large mark on the meso- and a smaller one on the metapleure,

the scutellum, and the sides of the metanotum broadly, yellow. Scutellum broad, flat,

168 HYMENOPTERA.

the sides keeled, the upper part with scattered punctures. Metathorax hollowed in

the middle, the slope somewhat abrupt; lateral tubercles longish, acute ; arez defined,

the supramedian broader than long, and with a short field at its base. The base of

the metanotum shining, the sides punctured, the middle transversely striated. Petiole

smooth, shining ; postpetiole closely punctured. Gastrocceli shallow, broad, with some

large striations at the base. The third and the base of the fourth segments of the

abdomen closely punctured; the others impunctate, shining. |

67. Ichneumon subsecivus. (Tab. VIII. fig. 7.)

Niger, nitidus ; linea pronoti, sterno, pleuris, apice scutelli maculisque 4 metanoti, flavis ; pedibus flavis, tarsis

posticis fulvis ; femoribus, tibiis anterioribus supra tibiisque posticis totis, nigris; alis hyalinis, apice fere

fumatis, stigmate nigro. 3.

Long. 13 millim.

Hab. Guatemaua, Cubilguitz in Vera Paz (Champion).

Antenne as long as the body. Head black; the mandibles, clypeus, front, and orbits

broadly yellow; the front projecting a little, punctured; the apices of the mandibles

black. Thorax black; aline on the edge of the pronotum, the prosternum, the tubercle

below the tegule, a transverse mark below the front, and a perpendicular one below

the hind wings, the lower part of the pleure and sternum, the tubercles in front of the

scutellum, and a mark in front of these, the apex of the scutellum, the postscutellum,

two marks at the base of the metanotum and two large ones at the apex extending from

the spines (which are yellow), and two large marks on the metapleure, yellow. Meso-

notum shining, with scattered punctures. Scutellum more strongly punctured than

the mesonotum, broad, the sides projecting as strong keels above the surface. Meta-

thorax strongly, transversely punctured; the apex rather abrupt and hollow in the

centre; the spines large ; the are mostly defined; the supramedian area horseshoe-

shaped, shining, aciculate, and with a keel down its centre. Petiole and postpetiole

shining, impunctate. Gastrocceli small, shining. Second and third segments of the

abdomen longitudinally punctured, the third not so strongly; the other segments

impunctate ; the base of the petiole, the apex of the postpetiole and of all the other

segments, yellow. Legs yellow; femora and tibie lined with black; the anterior tarsi

above, and the middle ones wholly, black; the posterior tarsi fulvous ; a small black

mark on the middle coxe, and a large one on the posterior coxee joining the trochanters,

which are entirely black. Areolet 4-angled, triangular above.

68. Ichneumon yucatanensis. (Tab. VIII. fig. 8.)

Niger ; sterno, maculis 2 mesonoti, apice scutelli maculisque metanoti flavis; pedibus fulvo-flavis, femoribus

tibiisque nigro-lineatis ; alis hyalinis, stigmate nigro. 9.

Long. 16 millim.

Hab. Mexico, Valladolid in Yucatan (Gaumer).

Antenne stout, involute; the third joint not much longer than the fourth; the

scape shining, minutely punctured. Head broad, yellow, the vertex and behind black ;

ICHNEUMON. 169

punctured, but not strongly. Thorax smooth, shining. Scutellum flat, longish ; the

sides semi-perpendicular ; the upper part with some scattered punctures. A broad line

on the edge of the pronotum, two short lines in the centre of the mesonotum, the

tubercles in front of the scutellum, the apex of the latter, the suture of the mesonotum,

and the postscutellum, yellow; the breast and a large mark on the mesopleure under

the wings also yellow. The pleural suture of the meso- and metanotum crenulated.

Metathorax broadly rounded, the centre at the apex deeply and broadly hollowed; the

ares distinct; the upper median area longer than broad, rounded at the base, trans-

verse at the apex; the base shining, bearing scattered punctures, the middle transversely

striated ; the sides punctured. The lower portion of the metapleure broadly yellow;

the edges of the aree mostly lined with yellow, the postmedian very broadly. There are

no tubercles, and the metathorax is densely covered with white hair. Petiole smooth,

shining, keeled ; postpetiole broad, finely punctured. Gastroceli shallow, small,

smooth, and shining. Abdomen closely, but not strongly, punctured; the apex very

shining, impunctate, acute ; the ventral surface and all the segments at the apex broadly

yellow; in the centre of the second segment is a small yellow mark indented at the

apex. On the hind coxe there is a black mark at the base laterally, and there is

another mark in front; the hind trochanters bear a black mark on the lower side; the

anterior femora and tibiee are lined above with black; the hind femoraare broadly black

above ; the hind tibie at the apical half and the middle tarsi are black.

~—___ 69. Ichneumon opaculus.

Ichneumon opaculus, Cresson, Proc. Acad. Phil. 1873, p. 115. no. 17° (3, 2).

Hab. Mexico, Orizaba, Cordova 1 (Sumichrast).

70. Ichneumon junceus.

Ichneumon junceus, Proc. Acad. Phil. 1873, p. 116. no. 18’ (¢).

Hab. Mexico, Cordova! (Sumichrast).

—————- 71. Ichneumon zapotecus.

Ichneumon zapotecus, Cresson, Trans. Amer. Ent. Soc. ii. p.3* (9); Proc. Acad. Phil. 1873,

p- 116. no. 19. -

_ Hab. Mexico, Cordova * (Sumichrast).

<_———— 72. Ichneumon encaustus.

Ichneumon encaustus, Cresson, Trans. Amer. Ent. Soc. ii. p. 4 (9); Proc. Acad. Phil. 1873,

p- 116. no. 20* (3, ?).

Hab. Mexico, Orizaba, Cordova 1 (Sumichrast}.

BIOL. CENTR.-AMER., Hymenopt., April 1885. UZ,

170 HYMENOPTERA.

73. Ichneumon zacatecus.

Ichneumon zacatecus, Cresson, Proc. Acad. Phil. 1873, p. 116. no. 21* (9).

Hab. Mexico, Orizaba! (Sumichrast).

74. Ichneumon parredes.

Ichneumon parredes, Cresson, Trans. Amer. Ent. Soc. ii. p.4* (2); Proc. Acad. Phil. 1873, p. 117.

no. 22.

Hab. MExico, Orizaba ! (Sumichrast).

~~~ 75. Ichneumon tepanecus.

Ichneumon tepanecus, Cresson, Trans. Amer. Ent. Soc. ii. p.5" (2); Proc. Acad. Phil. 1873, p. 117.

no. 23.

Hab. Mexico, Orizaba, Cordova ! (Sumichrast).

————— 76. Ichneumon subspinosus.

Ichneumon subspinosus, Cresson, Trans. Amer. Ent. Soc. ii. p. 177 (4); Proc. Acad. Phil. 1878,

p- 117. no. 24.

Hab. Mexico, Orizaba, Cordova! (Sumichrast).

Cresson thinks this may be the male of I. tepanecus.

77. Ichneumon actuosus.

Ichneumon actuosus, Cresson, Proc. Acad. Phil. 1878, p. 117. no. 251 (¢).

Hab. Mexico, Orizaba ! (Sumichrast).

78. Ichneumon nestor.

Ichneumon nestor, Cresson, Trans. Amer. Ent. Soc. ii. p.12* (2); Proc. Acad. Phil. 1878, p. 117.

no. 26.

Hab. Mzxico, Cordova 1 (Sumichrast).

mec TO Tohneumon toros.

Ichneumon toros, Cresson, Trans. Amer. Ent. Soc. ii. p. 14* (2); Proce. Acad. Phil. 1873, p. 117.

no. 27.

Hab. Mexico, Cordova (Sumichrast).

80. Ichneumon famelicus.

Ichneumon famelicus, Cresson, Trans. Amer. Ent. Soc. ii. p. 141 (¢); Proc. Acad. Phil. 1878,

p. 117. no. 28.

Hab. Mexico, Cordova! (Sumichrast).

—— 81. Ichneumon tenebricus.

Ichs.eumon tenebricus, Cresson, Trans. Amer. Ent. Soc. ii. p. 15 (¢, 9); Proc. Acad. Phil. 1873,

p. 117. no. 29°.

Hab. Mexico, Orizaba, Cordova (Sumichrast), Mirador! (Dr. Sartorius).

ICHNEUMON. 171

82. Ichneumon intentus.

Ichneumon intentus, Cresson, Trans. Amer. Ent. Soc. ii, p. 15 (¢); Proc. Acad, Phil. 1873,

p- 117. no. 30° (¢,; 2).

Hab. Mexico, Orizaba, Cordova! (Swmichrast).

This and the preceding species are said to be common, and to vary in length from

43 to 7 lines.

83. Ichneumon gracilentus.

Ichneumon gracilentus, Cresson, Trans. Amer. Ent. Soc. ii. p. 16° (?); Proc. Acad. Phil. 1873,

p. 118. no. 31.

Hab. Mexico, Cordova! (Sumichrast).

———— 84. Ichneumon arista.

Ichneumon arista, Cresson, Trans. Amer. Ent. Soc. ii. p. 167 (3); Proc. Acad. Phil. 1873, p. 118.

no. 82.

Hab. Mexico, Orizaba, Cordova 1 (Sumichrast)

85. Ichneumon maritus.

Ichneumon maritus, Cresson, Trans. Amer. Ent. Soc. ii. p. 16 * (¢, ¢) 5 Proc. Acad. Phil. 1873,

p- 118. no. 33.

Hab. Mexico, Cordova! (Sumichrast).

———-—~ 86. Ichneumon tuxtla.

Ichneumon tuxtla, Cresson, Trans. Amer. Ent. Soc. ii. p. 17 * (2); Proc. Acad. Phil. 1873, p. 118.

no. 34,

Hab. Muxico, Cordova ! (Sumichrast).

87. Ichneumon solitarius.

Ichneumon solitarius, Cresson, Proc. Acad. Phil. 1873, p. 118. no. 35* (¢).

Hab. Mexico, Orizaba! (Sumichrast).

88. Ichneumon prolixus.

Ichneumon prolixus, Cresson, Proc. Acad. Phil, 1878, p. 118. no. 36° (¢).

Hab. Mexico, Cordova! (Sumichrast).

89. Ichneumon cholula.

Ichneumon cholula, Cresson, Trans. Amer. Ent. Soc. ii. p. 5° (9)5 Proc. Acad. Phil, 1873, p. 119.

no. 37.

Hab. Mexico, Cordova ' (Sumichrast).

Zz 2

172 HYMENOPTERA.

90. Ichneumon zaptlanus.

Ichneumon zaptlanus, Cresson, Proc. Acad. Phil. 1873, p. 119. no. 38*( ¢).

Hab. Mzxico, Orizaba ! (Sumichrast).

91. Ichneumon excuratus.

Ichneumon excuratus, Cresson, Proc. Acad. Phil. 1873, p. 119. no. 89’(¢).

Hab. Mexico, Cordova ! (Sumichrast).

-———-™~ 92. Ichneumon toluca.

Ichneumon toluca, Cresson, Trans. Am. Ent. Soc. ii. p. 67 (¢); Proc. Acad. Phil. 1873, p. 120.

no. 40.

Hab. Mexico, Cordova ! (Sumichrast).

93. Ichneumon chalco.

Ichneumon chalco, Cresson, Trans. Am. Ent. Soc. p. 7’ (3); Proc. Acad. Phil. 1873, p. 120. no. 41.

Hab. Mexico, Cordova! (Sumichrast).

Cresson thinks this may be a variety of J. toluca.

94, Ichneumon inoratus.

Ichneumon inoratus, Cresson, Proc. Acad. Phil. 1878, p. 120. no. 42° (¢).

Hab. Mexico, Mirador! (Dr. Sartorius).

95. Ichneumon mendicus.

Ichneumon mendicus, Cresson, Proc. Acad. Phil. 1878, p. 120. no. 43° (2 ).

Hab. Mexico, Orizaba! (Sumichrast).

96. Ichneumon ignarus.

Ichneumon ignarus, Cresson, Proc. Acad. Phil. 1873, p. 121. no. 447(¢).

Hab. Mzxico, Cordova ! (Sumichrast).

97. Ichneumon placitus.

Ichneumon placitus, Cresson, Proc. Acad. Phil. 1873, p. 121. no. 457 ( ?).

Hab. Mexico, Mirador ! (Dr. Sartorius).

98. Ichneumon epicus.

Ichneumon epicus, Cresson, Proc. Acad. Phil. 1878, p. 121. no. 46°( 3).

Hab. Mexico, Mirador! (Dr. Sartorius).

99. Ichneumon nigrofemoratus.

Ichneumon nigrofemoratus, Cresson, Proc. Acad. Phil. 1873, p. 122. no. 47* (2).

Hab. Mexico, Orizaba! (Sumichrast).

ICHNEUMON. 173

100. Ichneumon abjectus.

Ichneumon abjectus, Cresson, Proc. Acad. Phil. 1878, p. 122. no. 487 (3).

Hab. Mexico, Cordova + (Sumichrast).

101. Ichneumon cephalotes.

Ichneumon cephalotes, Cresson, Proc. Acad. Phil. 1873, p. 123. no. 497 ( ?).

Hab. Mexico, Mirador! (Dr. Sartorius).

——~—~~ 102. Ichneumon chichimecus.

Ichneumon chichimecus, Cresson, Trans. Am. Ent. Soe. ii. p. 19*(¢); Proc. Acad. Phil. 1878,

p. 128. no. 50.

Hab. Muxico, Orizaba, Cordova! (Sumichrast).

103. Ichneumon teres.

Ichneumon teres, Cresson, Trans. Am. Ent. Soc. ii. p. 18* (3) ; Proc. Acad. Phil. 1873, p. 128.

no. 51.

Hab. Mzxico, Cordova! (Sumichrast).

104. Ichneumon amecus.

Ichneumon amecus, Cresson, Proc. Acad. Phil. 1873, p. 123. no. 52° (¢).

Hab. Mexico, Mirador! (Dr. Sartorius).

105. Ichneumon parandus.

Ichneumon parandus, Cresson, Proc. Acad. Phil. 1873, p. 124. no. 538* (¢).

Hab. Mexico, Orizaba, Cordova (Sumichrast), Mirador! (Dr. Sartorius).

106. Ichneumon abaculus.

Ichneumon, abaculus, Cresson, Proc. Acad. Phil. 1878, p. 124. no. 54° (¢).

Hab. Mexico, Orizaba! (Sumichrast).

107. Ichneumon centralis. (Tab. VIII. fig. 15.)

Flavus ; vertice, mesonoti lineis 4, metanoti 3, abdominis segmentis 1°-5™ basi lete, femoribus anterioribus

supra, posticarum basi et apice, tibiarum posticis apice maculaque posticarum coxarum, nigris; basi _

antennarum brunnea, medio flavo, apice nigro; alis flavo-hyalinis, costa et stigmate testaceis. ?.

Long. 13 millim.

Hab. Costa Rica, Cache (Rogers).

Head subbuccated ; the eyes surrounded by a narrow furrow ; face obscurely punctured,

the centre of the vertex transversely striated, the sides with scattered punctures; front

excavated above the antenne, smooth, shining; at the side above the clypeus is a deep

round fovea, and over the clypeus and going through the fovea is a semicircular suture;

clypeus slightly incised at the apex. Antenne stout, involute; second joint one

third longer than the third, which is scarcely one fourth longer than the fourth.

174 HYMENOPTERA.

Thorax (especially the mesonotum) punctured ; the pleure obscurely, transversely

striated. Scutellum slightly elevated, much broader at the base than at the apex, the

sides curved, the base and apex scarcely truncate; the upper part bearing some slight

scattered punctures, the base almost impunctate. At the side of the scutellum there

are five or six conspicuous striations running from it to a carina which proceeds from

the base of the posterior wings to the postscutellum ; a similar carina runs from the

wings to the apex of the postscutellum, the space enclosed being hollow and striated.

Metanotum punctured, the centre coarsely shagreened; upper median area a little

longer than broad. Petiole smooth, shining, the sides margined and hollowed, and

with arow of punctures below the upper margin. Postpetiole closely, finely, and longi-

tudinally striated, punctured laterally. The remaining abdominal segments closely punc-

tured, the punctuation becoming weaker towards the apex; the second segment at the

base striated and reticulated, especially at the sides; the segments constricted somewhat

at the base; the apex bluntly rounded, and wider than the base of the second segment,

which is one fourth longer than the third, this again being longer than the fourth ;

the fifth segment is much shorter than the fourth, and the sixth and seventh together

are not half the length of the fifth. Gastrocceli almost obsolete. Legs robust; anterior

tarsi indented at the base. The basal joint of the antenne is yellow, brownish above;

joints two to seven brownish beneath and at the sides, blackish in the centre above, eight

to fifteen clear yellow, the rest black. The vertex in the centre is black, the black

becoming narrowed towards the antenne ; and there is a black transverse line behind

the ocelli joining the eyes; the extreme back of the head is black. On the pronotum

there is a black line in front, close to the head; the sides of the mesonotum are for

the most part black at the junction with the pronotum; there is a ()-shaped mark

along the side originating close to the scutellum, and, in its centre, a broad longitudinal

line runs from near its apex to the end of the mesonotum. The sutures of the pleure

are more or less black, as are also the sides of the scutellum and postscutellum; the

base of the metanotum, a curved line along the spiracular area, and the whole of the

median arez are black. The petiole is black above to the postpetiole, so is more

than half of the second and third segments, the black being transverse at the apex;

- the basal halves of the fourth and fifth segments are also black, but the black is

rounded off (especially on the fifth) at theapex. The extreme base of the coxe, a mark

at the apex of them all (that on the posterior pair being much the largest), a line

along the top of all the femora, a short line beneath at the apex, and a shorter one

(forming a ring) at the base of the four posterior pairs, the inner side of the middle

tibie, and the hind tibie at the apex all round, black. The tarsi incline to ferrugi-

nous, especially at the apex. Areolet 5-angled, broad above.

108. Ichneumon parsimonicus. (Tab. VII. fig. 23.)

Flavo-testaceus; vertice, antennis, lineis 3 mesonoti, 1 metanoti, segmentis abdominis basi, linea femorum

posticorum, tibiarum posticarum apice tarsisque posticis, nigris; alis hyalinis, stigmate testaceo. ¢.

Long. 13 millim.

ICHNEUMON. 175

Hab. Mexico (Sallé).

Head and mesonotum punctured, but not strongly, scarcely dilated behind; the

centre of the vertex is black to near the antenne, and behind the black is prolonged, on

either side, to the eyes. The outer black lines on the mesonotum are united behind, and

in front they are united to a narrow line which extends backwards to the tegule and

beneath the latter there are two small black lines. The suture between the meso- and

metanotum is black nearly all round, and there is a transverse line behind the post-

scutellum ; the central line on the metanotum is narrow. Scutellum raised, the sides

carinate. Metathoracic aree clearly defined ; without lateral tubercles. Petiole smooth,

shining, impunctate, the sides carinate, a longish fovea at the apex; postpetiole punc-

tured, the sides depressed above. Gastrocceli indistinct. Abdominal segments strongly

punctured ; the second and third segments have the basal half black, and the black

bands are of nearly equal width throughout; the black on the other segments extends

beyond the middle at the centre, but is contracted at the sides. There is a small black

mark on the inner side of the posterior coxe at the base, and another at the apex on the

outer side; the line over the posterior femora is fuscous rather than black. Areolet

d-angled, square above. |

109. Ichneumon abitus.

Ichneumon abitus, Cresson, Proc. Acad. Phil. 1873, p. 125. no. 55* (3).

Hab. Mexico, Cordova ! (Sumichrast).

110. Ichneumon durus.

Ichneumon durus, Cresson, Proc. Acad. Phil. 1873, p. 125. no. 56* (3).

Hab. Mexico, Cordova! (Sumichrast).

111. Ichneumon alvarado. (Tab. VII. fig. 24.)

Ichneumon alvarado, Cresson, Trans. Am. Ent. Soc. ii. p. 7 (¢); Proc. Acad. Phil. 1873, p. 125.

no.57?(g, 2).

Hab. Mexico, Orizaba, Cordova ! (Sumichrast).

112. Ichneumon decorosus.

Ichneumon decorosus, Cresson, Trans. Am, Ent. Soc. ii. p. 8’ (6); Proc. Acad. Phil. 1878, p. 125.

~ no. 58.

Hab. Mexico, Cordova! (Sumichrast).

113. Ichneumon centrosus. :

Ichneumon centrosus, Cresson, Trans. Am. Ent. Soc. ii. p. 8' (¢); Proc. Acad. Phil. 1873, p. 126.

no. 59.

Hab. Mexico, Cordova! (Sumichrast).

176 HYMENOPTERA.

————~I14, Ichneumon jugiosus.

Ichneumon jugiosus, Cresson, Trans. Am. Ent. Soc. ii. p. 9 (9); Proc. Acad. Phil. 1873, p. 126.

no. 60' (¢, 2).

Hab. Mexico, Orizaba, Cordova! (Sumichrast).

115. Ichneumon limitaris,

Ichneumon limitaris, Cresson, Trans. Am. Ent. Soe. ii. p. 9? (¢); Proc. Acad. Phil. 1873, p. 126.

no. 61.

Hab. Mexico, Cordova! (Sumichrast).

— 116. Ichneumon tenuicornis.

Ichneumon tenuicornis, Cresson, Trans. Am. Ent. Soc. ii. p.9* (¢); Proc. Acad. Phil. 1873, p. 126.

no. 62.

Hab. Mexico, Cordova! (Sumichrast).

117. Ichneumon monitus.

Ichneumon monitus, Cresson, Trans. Am. Ent. Soc. ii. p. 10* (2) ; Proc. Acad. Phil. 1873, p. 126.

no. 63. |

Hab. Mexico, Cordova? (Sumichrast).

118. Ichneumon motivus. (Tab. VIII. fig. 16.)

Capite et thorace flavis, nigro maculatis; abdomine nigro-ceruleo; antennis nigris, annulo albo; pedibus flavis,

anterioribus supra nigro lineatis, femoribus posticis (medio excepto), apice tibiarum tarsisque, nigris; alis

hyalinis, stigmate fusco. 9.

Long. 20 millim.

Hab. Mexico, Orizaba (Bilimek).

Antenne not much longer than the abdomen, stout, semi-involute, shortly pilose, the

third joint not much longer than the fourth ; basal joints of the flagellum microscopically

punctured ; scape yellow beneath, more strongly punctured than the flagellum. Head

broad, the front only slightly projecting; punctured most strongly on the vertex and

front ; eyes margined ; clypeal fovez large ; vertex broadly and the posterior region black.

Thorax stout, much broader than the abdomen, and also broader than the head,

punctured. Scutellum flat, longer than broad, narrowed towards the apex, the sides not

margined. The pleure, except a long black line immediately beneath the wings, a

shorter one in the middle, and a large mark in front of the middle coxe, yellow.

Prothorax, except a transverse mark in front, and a large and somewhat triangular mark

on the side, yellow. Mesonotum black, with two long yellow longitudinal lines in the

centre, and a short one at the tegule; the tubercles in front of the scutellum, which is

itself yellow (except a broad black line down the centre), and the postscutellum, yellow.

Metathorax longish, with a gradual rounded slope, the middle but slightly hollowed ;

ICHNEUMON. | 177

areee and tubercles obsolete; the extreme base is smooth and impunctate, beyond this

smooth space it is for a short distance striated (the middle transversely, the sides longitu-

dinally), the rest is punctured. The pleure are yellow, bordered all round with black ;

the spiracular area is yellow, black in the middle. The centre of the metanotum is black,

broadly bordered with yellow, the yellow being continued up on either side of the apex

of the supramedian area; the base is black. Petiole longitudinally striated, the strie

continued into the middle of the postpetiole, which is raised on either side and laterally

depressed at the base; the sides and apex of the postpetiole punctured. Abdomen

longish, becoming dilated to the fifth segment; the apex acute; the segments contracted

at the base ; strongly punctured; gastrocceli large, deep, transverse, broader than long,

aciculate ; the ventral surface is yellow to the base of the ovipositor, and with three

broad black marks on either side. Legs stout. Coxe large, especially the posterior

pair; the two anterior pairs are entirely yellow; there is a large black mark on the

posterior pair beneath at the base, and a narrower mark above, the extreme apex being

also bordered with black. The four anterior legs are entirely yellow beneath, except a

black mark at the base of the middle tibiae; above they are lined with black, except

a long yellow mark in the centre of the yellow on the femora and a small yellow line

at the base of the middle tibia. The hind femora are yellow, black at the extreme

base, and broadly black at the apex; hind tarsi and spurs entirely black. The

anterior metatarsi are sharply curved at the base, the spurs being also curved. The

middle femora are short and thick, and have a blunt keel on the underside; this.

keel projects at the apex and forms a leaf-like tooth. The middle tibia are narrow

at the base, and have also a blunt tooth, beyond which the tibia thickens. Areolet

5-angled, converging above.

119. Ichneumon beatus. (Tab. VIII. fig. 17.)

Ceeruleo ; annulo antennarum, palpis, mandibularum basi, orbitis oculorum, tegulis, lineis pronoti tibiisque anticis,

albis, posticis nigris; alis subfumatis, stigmate nigro-fusco. 9.

Long. 14 millim.

Hab. Mexico, Takubaya (Bilimek).

Antenne stout, involute, the third joint longer than the fourth. Head and thorax

closely punctured. Scutellum apparently flat*; the tubercles in front of it white.

Metathorax broadly rounded, but slightly hollowed in the centre at the apex;

without tubercles; all the aree distinct ; upper median area harp-shaped, broader than

long ; the base striated, the apex and sides rugosely punctured. Petiole keeled, finely

punctured; postpetiole reticulate-punctate in the middle, the sides finely punctured.

Gastrocceli very broad and deep, finely aciculate. Abdomen with the second segment

reticulate-striate in the middle, the sides coarsely punctured ; the third segment coarsely

and longitudinally striated in the middle, the sides coarsely punctured; the fourth

* The pin goes through it, so I am unable to describe it fully.

BIOL. CENTR.-AMER., Hymenopt., May 1885. 2 AA

178 HYMENOPTERA.

segment shortly and longitudinally striated at the base, the sides punctured, but much

less strongly so than the third; apical segments smooth, shining, almost impunctate.

Areolet 5-angled, longish, narrowed above. Anterior tarsi obscure-white on the lower

side, the tibiee lined with blue behind.

120. Ichneumon virescens.

Ichneumon virescens, Cresson, Proc. Acad. Phil. 1873, p. 126. no. 64(9?)*.

Hab. Mexico, Mirador ! (Dr. Sartorius).

121. Ichneumon rixosus.

Hoplismenus rixosus, Cresson, Trans. Am. Ent. Soc. ii. p. 20 (2?) ’.

Ichneumon rizosus, Cresson, Proc. Acad. Phil. 1873, p. 126. no. 65%.

Hab. MExico, Cordova 1? (Sumichrast).

122. Ichneumon munitus.

Hoplismenus munitus, Cresson, Trans. Am. Ent. Soe. ii. p. 21 (¢ 9)’.

Ichneumon munitus, Cresson, Proc. Acad. Phil. 1878, p. 127. no. 66°.

Hab. Mexico, Orizaba, Cordova ! 2 (Sumichrast).

123. Ichneumon propinquus.

Hoplismenus propinquus, Cresson, Trans. Am. Ent. Soc. ii. p. 22 (?)*.

Ichneumon propinquus, Cresson, Proc. Acad. Phil. 1873, p. 127. no. 67.

Hab. Mexico, Cordova! (Sumichrast).

124. Ichneumon picturatus.

Hoplismenus picturatus, Cresson, Trans. Am. Ent. Soc. ii. p. 22 (?)'.

Ichneumon picturatus, Cresson, Proc. Acad. Phil. 1873, p. 127. no. 68.

Hab. Mxxico, Cordova! (Sumichrast).

125. Ichneumon dissonus.

Hoplismenus dissonus, Cresson, Trans. Am. Ent. Soc. 1. p. 23 ( 2)’.

Ichneumon dissonus, Cresson, Proc. Acad. Phil. 1873, p. 127. no. 69.

Hab. Mexico, Cordova! (Sumichrast).

“~~ 126. Ichneumon minax.

Hoplismenus minaz, Cresson, Trans. Am, Ent. Soc. ii. p. 23 (3) *.

Ichneumon minax, Cresson, Proc. Acad. Phil. 1873, p. 127. no. 70’.

Hab. Mexico, Orizaba, Cordova 1? (Sumichrast).

127. Ichneumon limatus.

Hoplismenus limatus, Cresson, Trans. Am. Ent. Soc. i. p. 24 (¢)’.

Ichneumon limatus, Cresson, Proc. Acad. Phil. 1873, p. 127. no. 71’.

Hab. Mexico, Cordova1? (Sumichrast).

-ICHNEUMON. 179

Scutellum flat, scarcely raised above the scutum, broader than long, sharply and obliquely

narrowed from the middle to the apex. Antenne of the male as long as the head,

thorax, and basal segment of the abdomen together ; thick, compressed and dilated

towards the apex, as in Joppa female. Abdomen long, narrow, of nearly equal

width from the second segment, the latter strongly longitudinally striated at

the base; segments two and three with a longitudinal fold. Areolet 4-angled,

triangular above. Apex of the clypeus rounded in the male. _

Nyro, 29,134,191, TNS

128. Ichneumon maculosus. (Tab. VIII. fig. 6.)

Joppa maculosa, F. Smith, Descr. of New Species of Hymen. p. 233 (1879) *.

Hab. Guaremaua, San Gerdénimo (Champion) ; Costa Rica, Volcan de Irazu 6000 feet

(H. Rogers). | ,

bh - % ib Led

Scutellum conical, the apex obtuse. Set | on [24,14

129. Ichneumon montezuma.

Ichneumon montezuma, Cresson, Trans. Am. Ent. Soc. ii. p.13(¢)*; Proc. Acad. Phil. 1873, p. 127.

no. 72.

Hab. Mexico, Cordova! (Sumichrast).

130. Ichneumon exquisitus. (Tab. VII. fig. 25.)

Ichneumon exquisitus, Cresson, Trans. Am. Ent. Soc. ii. p. 12 (¢ 9)*; Proc. Acad. Phil. 1873,

p. 127. no. 73. ,

Hab. Mexico, Orizaba, Cordova! (Sumichrast); GuateMaLa, San Gerdnimo.

(Champion).

131. Ichneumon piliventris. (Tab. VIII. fig. 19.)

Flavo-testaceus; antennis (scapo subtus excepto), linea media metanoti, geniculis posticis, tarsis posticis abdo-

minisque segmentis basi, nigris ; alis hyalinis, apice fumatis, nervis et stigmate nigris. <.

Long. 15 millim.

Hab. Guatemata, San Geronimo (Champion).

Face smooth, shining, impunctate, pale yellow, projecting, bluntly keeled in the middle ;

clypeal fovee large and deep; front deeply excavated above the antenne, smooth and

shining ; vertex aciculated, obscure fulvous in the centre, punctured, the sides shining and

impunctate. Thorax punctured, covered with a black pubescence, which is longest on

the scutellum; the sutures black; a black mark in the middle of the pronotum, and

two obscure blackish lines in front of the mesonotum, the latter almost obsolete. Scu-

tellum elevated, a little broader than long, the sides and apex (especially the latter)

almost perpendicular, the sides above obscurely margined; scutellar fovea at the base

black, the deep lateral keels acute. Metathorax with two broad tubercles at the sides,

2aa2 -

tpt

lye

180 HYMENOPTERA.

punctured, and with a large broad black mark in the middle, the base being rounded ;

the arew obsolete. Petiole smooth, shining, impunctate ; postpetiole shining, with a few

obscure punctures at the apex. Remaining segments of the abdomen punctured, pilose,

the pubescence on the apex being especially long; on the second segment there is, at

the base, a broad black band, which narrows at the middle, then runs on either side

along the gastrocceli, the base of which is black; on the third segment is a narrower

black band ; on the apical segments the basal band is obscure, if not obsolete, and the

apex itself is almost fulvous, smooth, shining, and almost impunctate. Gastrocceli

very broad, the bottom with large longitudinal striations; sides smooth, impunctate.

Areolet 4-angled, triangular above.

In some examples the black basal band on the abdominal segments is broad and

distinct on all the segments; others have the apex of the posterior tarsi black, and the

line on the metanotum frequently small and obscure.

132. Ichneumon notabilis, (Tab. VIII. fig. 20.)

Flavo-testaceus ; flagello antennarum, vertice, basi tarsorum anteriorum, geniculis posticis, tarsis posticis

dimidioque apicali tibiarum posticarum, nigris; alis hyalinis, stigmate fusco, basi testaceo. ¢.

Long. 16 millim.

Hab. Guatemaa, San Gerénimo (Champion).

Body covered with a short pubescence. Head and thorax closely but not deeply

punctured, the former excavated above the antenne, and with the vertex in the middle

broadly, and the greater part behind, black. Mesonotum covered with a black pubes-

cence, more or less blackish, especially in the centre, and semiopaque. Scutellum

gibbous, broadly rounded at the base, narrower at the apex, the sides above margined,

Metathorax with two large, acute tubercles; the sides projecting at the apex (which

has a slight slope), thus making the centre hollow; the arez obsolete, the surface

subrugose. Petiole yellow for the greater part, smooth, shining, and with a longish

hollow on either side at the apex ; postpetiole punctured, the apex in the middle smooth,

shining, and impunctate. Gastrocceli deep, aciculated, double as wide as long, and

situated quite close to the base of the segment. Abdominal segments punctured, covered

with a close pubescence; at the base of the third segment there is a small black mark,

narrowed in the centre; a broader and wider mark on the next segment, a longer and

narrower band on the following, and a shorter and broader one on the apical segment,

all black. The apices of the wings are faintly clouded; the areolet sharply triangular

above; the nervures black.

133. Ichneumon abactus.

Ichneumon abactus, Cresson, Proc. Acad. Phil. 1873, p. 127. no. 74: (¢).

Hab. Mexico, Mirador! (Dr. Sartorius).

ICHNEUMON. | 181

12)

Scutellum conical, the apex acute. me ae | 29,

134. Ichneumon ariel, (Tab. VIII. fig. 14.)

Niger; facie, orbitis, annulo antennarum, maculis pleuralis, linea pronoti, scutello maculisque 2 metanoti,

albis; pedibus testaceis, coxis posticis, femoribus posterioribus, tibiis posticis dimidio apicali tarsisque

posticis (apice excepto), nigris. ¢.

Long. 16 millim.

Hab. Guatemaua, Panima (Champion).

Antenne nearly as long as the body. Head, except the vertex and behind, black; strongly

punctured. Mesothorax opaque, very finely and closely punctured. Prosternum, a line -

on the pronotum, the tegule and the tubercle beneath them, the tubercles in front of the

scutellum, the scutellum, the postscutellum, a large mark on the mesopleure close to

the sternum, and the sides of the metanotum at the tubercles (which are very prominent

and yellow), yellow. Scutellum sharply conical, closely punctured, and covered with

longish hair. Metathorax more strongly punctured than the mesothorax, the middle

transversely striated. Petiole smooth, shining, and impunctate, except at the apex;

postpetiole punctured, finely and longitudinally striated at the apex. Abdominal

segments very closely and strongly punctured, striated at the base of the anterior

segments. Base and apex of the petiole, and the apices of the other segments, yellow.

135, Ichneumon blandicus.

Rufus ; vertice, antennis, pronoto mesonotoque nigris; annulo antennarum, facie, pedibus anterioribus basi

sternoque, albis; alis hyalinis, stigmate sordide rufo. ¢.

Long. 18 millim.

Hab. Guatemata, Purula (Champion).

Antenne as long as the body, the apical and middle joints dentate, pilose; the scape

beneath, and a narrow ring beyond the middle, white. Face strongly punctured, striated

in the middle, only slightly projecting ; apex of the clypeus sharply transverse; except

the orbits on the outer side below the middle, the head is black above the antenne.

Mesonotum opaque, closely and rugosely punctured; pleure finely granulated. Scu-

tellum strongly punctured, densely covered with long black hairs, conical, the apex

ending in a distinct conical reddish point, the sides keeled. Metathorax rugose, the

sides rugosely striated, covered with long pale hair; the upper median area not clearly

defined ; the apex gradually rounded ; the spines long and acute. The prothorax, except

on the lower side, and a line on the edge, is black ; the mesonotum and scutellum black,

except a mark at the tegule (which are black), and the base of the scutellar keels.

Abdomen strongly and closely punctured; petiole shining, impunctate; gastrocceli

obsolete. Legs longish ; coxe punctured ; hind tarsi black, white at the apex. Areolet

longish, 5-angled, the lateral nervures converging above.

YhjLNe

182 HYMENOPTERA.

———~ 136. Ichneumon occiputalis.

Hoplismenus occiputalis, Cresson, Trans. Am. Ent. Soc. ii. p. 24 (¢ 2)’.

Ichneumon occiputalis, Cresson, Proc. Acad. Phil. 1878, p. 127. no. 75’.

Hab. Mexico, Orizaba, Cordova !? (Sumichrast).

~~ 187. Ichneumon esurialis.

Hoplismenus esurialis, Cresson, Trans. Am. Ent. Soc. ii. p. 25 (3 2)’.

Ichneumon esurialis, Cresson, Proc. Acad. Phil. 1878, p. 128. no. 76°.

Hab. Mexico, Orizaba, Cordova 12 (Sumichrast).

——~—~138. Ichneumon scutellaris.

Hoplismenus scutellaris, Cresson, Trans. Am. Ent. Soe. ii. p. 26 (¢)’.

Ichneumon scutellaris, Cresson, Proc. Acad. Phil. 1873, p. 128. no. 77 (¢ 2)”.

Hab. Mexico, Orizaba, Cordova1? (Sumichrast), Mirador? (Dr. Sartorius).

139. Ichneumon similans.

Ichneumon similans, Cresson, Proc. Acad. Phil. 1873, p. 128. no. 78 (g)’.

Hab. Mexico, Mirador 1 (Dr. Sartorius).

140. Ichneumon acclivus.

Hoplismenus acclivus, Cresson, Trans. Am. Ent. Soe. ii. p. 25 (g)’.

Ichneumon acclivus, Cresson, Proc. Acad. Phil. 18738, p. 128. no. 79.

Hab. Mexico, Cordova! (Sumichrast).

Scutellum much elevated, oblique, the apex with transverse edge.

ee Nee, | 119,134 P q

plot eS

__——— 141. Ichneumon aztecus. (Tab. VIII. fig. 18.) |

Ichneumon aztecus, Cresson, Trans. Am. Ent. Soc. ii. p. 20(¢)'; Proc. Acad. Phil. 1873, p. 128.

no, 80.

Hab. Mexico, Orizaba, Isthmus of Tehuantepec! (Sumichrast); Guatemala, San

Gerénimo, Purula (Champion).

Head obscurely punctured, the front deeply excavated; the back of the head entirely

and the vertex broadly black in the middle to the base of the antenne. Thorax strongly

punctured; a broad black line on either side of the pronotum; mesonotum entirely

black, except two narrow lines in the middle; a roundish black mark at the side of the

scutellum, and a thin black line along the base of the metanotum. Scutellum strongly

gibbous, projecting into a narrow truncated point at the apex above, and covered (as is

also the metathorax, and to a less extent the mesothorax) with long fuscous hair.

Metathorax subrugose ; the base, apex, and sides reticulated ; the ares obsolete; with

a long blunt tubercle on either side. Petiole smooth and shining; the postpetiole

ICHNEUMON. 183

punctured. Gastrocceli large, moderately deep, aciculated, as long as broad. Abdomen

with the middle of the second segment obscurely carinated on the back, the sides above

a little depressed in the centre; the segments coarsely punctured; a small black mark

at the extreme base of the petiole; the black mark on the second segment is produced

to a point at the apex, that on the next two segments of nearly equal width throughout,

on the fifth and sixth narrower at the side. Areolet sharply triangular above; the stigma

obscurely fuscous in the centre.

142. Ichneumon tragicus.

Ichneumon tragicus, Cresson, Trans. Am. Ent. Soe. ii. p. 11’ (6); Proc. Acad. Phil. 1878, p. 128.

no. 81.

Hab. Mexico, Cordova! (Sumichrast).

———-——~ 143. Ichneumon lenis.

Ichneumon lenis, Cresson, Trans. Am. Ent. Soc. ii. p. 19* (2); Proc. Acad. Phil. 1873, p. 128.

no. 82.

Hab. Muxico, Orizaba, Cordova! (Sumichrast).

144. Ichneumon infulatus.

Ichneumon infulatus, Cresson, Trans. Am. Ent. Soc. ii. p. 127 (2); Proc. Acad. Phil. 1873, p. 128.

no. 83.

Hab. Mexico, Cordova! (Sumichrast).

Scutellum much elevated, depressed in the centre at the apex or bispinose.

Seu Aras 12F, r2ryrFH yy,

——~— 145. Ichneumon abnormis.

Hoplismenus abnormis, Cresson, Trans. Am. Ent. Soe. ii. p. 26* (9).

Ichneumon abnormis, Cresson, Proc. Acad. Phil. 1873, p. 128. no. 84.

Hab. Mexico, Cordova! (Sumichrast).

146. Ichneumon orizabensis. (Tab. VIII. fig. 21.)

Flavus ; antennis nigris, albo annulato; vertice, pronoto, mesonoto pro majore parte, macula mesopleurali,

maculis 2 metanoti, abdominis segmentis basi lete, femoribus supra, tarsis tibiisque posticis, nigris ;

alis hyalinis, nervis nigris. 9°.

Long. 15 millim.

Hab. Mexico, Orizaba (Bilimek).

Antenne nearly as long as the thorax and abdomen together ; dilated and compressed

slightly beyond the middle, the apex much thinner; the sixth to the twelfth joints clear

white; the third joint a little longer than the fourth. The hollow space above the antenne

is black, and the black proceeds up through the ocelli to the back of the head, which is, for

the greater part, black behind. The vertex is somewhat depressed ; below the ocelli there

184 HYMENOPTERA.

are some transverse striations. The face projects in the centre; the projecting part is

interrupted beyond the middle by a broad transverse hollow and ends at the base of the

clypeus, which projects outwardly at the apex, thus forming a hollow. The fovee at

the sides of the clypeus are large and deep. Labrum projecting, semicircular at the

apex, and covered there with longish hair. The entire head (except the hollow space

above the antennz) covered with distinct punctures. ‘Thorax closely punctured. The

pronotum is black, except round the edges, which are broadly yellow; on the meso-

notum there are two yellow longitudinal lines in the centre, running from the pronotum

to a little past the yellow tegule; the carine running to the scutellum are clear yellow

at the base. The scutellum is yellow on its apical half and behind; the junction

between the meso- and metanotum and the postscutellum are also yellow. Below the

wings there is a broad black line, and the hollow in the centre of the mesopleura and

the sutures are also black. On the metanotum is a broad black mark (narrowest

behind) reaching from the base to the tubercles. The scutellum rises obliquely,

narrowing gradually to the apex, which is slightly depressed in the centre. The

scutellum itself is not keeled, but the keels at its base are broad. The keels on the

median ares are not very distinct, but that bordering the outside of the spiracular is.

The supramedian area is not very clear ; it is rounded at the base and transverse at the

apex; at its base the metanotum is raised above its level. The lateral tubercles are

large (and triangular in form if viewed from the side), their apices not very acute. The

pleure in the middle are longitudinally, the metanotum behind transversely, striated.

The petiole is smooth, shining, and impunctate at the base, shallowly punctured at

the apex; the postpetiole is broad, slightly depressed at the sides, and punctured ;

the petiole, to near the apex, is black. Gastrocceli large, broader than long, coarsely

striated. The abdomen is closely punctured and acute at the apex; the black mark on

the second segment occupies somewhat more than the basal half, and is transverse at.

the apex ; on the three following segments it occupies scarcely the half, and is rounded,

narrowing at the sides; on the fifth segment it does not occupy more than one third ;

there is no black on the apical segment, but the sheath of the ovipositor is black.

There is a small black spot at the base of the hind coxe and a larger one at the apex,

both being on the upper side; on the underside and at the apex the hind tibie are

brownish; the lower side of the tarsi inclines also to brownish. Areolet triangular

above, the lateral nervures almost touching.

In one specimen, apparently a variety of the above, the upper part of the scutellum

is roundly depressed, thus forming two tubercles, and the black on the mesopleura is

longer and has a yellow spot in the centre.

147. Ichneumon marginiscutellatus. -

Niger, flavo-varius; ore, facie, orbitis, annulo flagello antennarum, linea pronoti, maculis 2 mesonoti, scutelli

medio, postscutello, maculis 4 pleuralibus, maculis 2 metanoti abdominisque segmentis apice, flavis; pedibus

ICHNEUMON. 185

flavis, macula coxarum posticarum, linea femorum posticorum dimidioque apicali tibiarum posticarum,

nigris; alis hyalinis, stigmate nigro. 92.

Long. 13 millim.

Hab. Guatemata, San Gerénimo (Champion).

Antenne a little longer than the body, dilated somewhat towards the apex. Head

buccated ; face with shallow punctures; clypeal fovese deep ; vertex depressed between

the eyes. Thorax with shallow scattered punctures; the base of the metanotum

impunctate, obscurely shagreened ; the rest and the pleure transversely striated; the

sides also punctured. The yellow line on the pronotum is broad; the two lines on

the mesonotum more than double as long as wide. The scutellum yellow above

throughout, the projecting sides entirely black. The two marks on the metanotum

occupy the greater portion of the sides, and cover the spines, but they do not extend

on to the central area. On the mesopleura there is, beneath the fore wings, a large

yellow mark; below this again, but placed more in the rear, is a slightly smaller

mark ; there is a much smaller mark beneath the hind wings, and the greater part of the

metapleura is yellow. The metathoracic aree are all distinct; the supramedian area a

little longer than broad, dilated towards the apex; the spines large, stout, and sub-

acute at the apex. Petiole shining, bearing scattered punctures; postpetiole

impunctate, a longish moderately deep fovea in the centre above. Gastroceli deep,

wider than long, aciculate, the sides striated. Abdomen not much longer than the

head and thorax together; the base of the second segment longitudinally striated; the

following segments closely and strongly punctured, the punctuation becoming weaker

until the apical segment is almost impunctate. Legs stout; the hind coxe punctured,

black at the base and apex; the hind trochanters black beneath; the hind femora black

except above ; the tibiz with the apical half black ; the tarsi incline to fulvous. The

scutellum, in the middle, rises nearly equally from the base and apex ; the sides project

above it into large stout teeth, which are blunt and a little bent at the end. Viewed

from the side the scutellum is somewhat triangular. Areolet 5-angled, the lower side

distinctly angled ; the lateral nervures converging above.

148. Ichneumon fortispina. (Tab. VIII. fig. 24.)

Niger, flavo-variegatus; flagello antennarum annulo, maculis 2 mesonoti, apice scutelli, maculis 2 metanoti,

pedibus anterioribus tarsisque posticis, flavis. ¢.

Long. 8 millim.

Hab. Guatema.a, San Gerénimo (Champion).

Antenne nearly as long as the body, a little compressed before the apex ; the scape

white beneath. Head large, dilated behind the antenne ; face flattish ; yellow, except

behind; the centre of the vertex, and the orbits behind narrowly, black; in the

black behind and nearly touching the eyes above is a yellow mark. Thorax black; a

short broad mark on the edge of the pronotum, two broad lines in front of the

BIOL. CENTR.-AMER., Hymenopt., July 1885. 2 BB

186 HYMENOPTERA.

scutellum, the apex of the scutellum, the postscutellum, two large marks on the meta-

notum, the tubercle below the tegule, an oblong mark below, a round one below the

hind wings, a large mark close to the mesosternum, and an equally large one on the

metapleure, yellow. Metanotum coarsely punctured and reticulated; the apex semi-

oblique, hollow in the centre, the hollow being less strongly punctured than the rest,

and with the sides margined. Petiole and postpetiole smooth, impunctate, the latter

with a few punctures at the apex. The rest of the abdomen oval, punctured, black ;

the edge of the second, the third at the apex, and the apical segment almost entirely,

yellow ; gastroceeli large, deep, shining, striated, aciculate; a large transverse furrow

at the base of the third segment; the second segment strongly, the third and fourth

more finely, punctured ; the apical segment almost impunctate. Four anterior legs

entirely, and the hind tarsi, fulvous; hind coxe, trochanters, femora, and tibize, black ;

the cox yellow behind.

149. Ichneumon fastidiosissimus.

Niger ; facie, orbitis, annulo flagello antennarum, linea pronoti, maculis thoracis, coxis trochanteribusque

anterioribus, macula coxarum posticarum, maculisque lateralibus abdominis, albis; pedibus rufis, coxis

trochanteribusque posticis (macula excepto) nigris ; alis hyalinis, nervis stigmateque nigris. ¢.

Long. 13 millim.

Hab. Panama, Volcan de Chiriqui 3000 to 4000 feet (Champion).

Antenne nearly as long as the body, stout, covered with a microscopic pile; the

third and fourth joints subequal. Face densely covered with white hair, punctured;

the clypeus scarcely transverse at the apex; mandibles for the greater part piceous

black; behind and above the antenne (except at the orbits) the head is black. Ocelli

raised, a curved deep furrow in front of them. The collar is white and raised in the

centre, the raised part being lower than the pronotum close to the mesonotum, and

there is also a longish mark on its side; the line on the edge of the pronotum is

short, and from it the pronotum runs quite straight and flat to the collar; the pronotum

is strongly punctured, the sides shining. Mesonotum strongly punctured all over; the

pleure in front strongly projecting out from the prothorax ; a deep curved hollow in

the centre. The carine in front of the scutellum are white at the base; the scutellum

is white behind; tegule, the tubercle below, one about the same size below the

fore wings, a large longitudinal mark in the middle of the mesopleure, two marks

below the hind wings, a roundish mark on the metapleure, a small mark on either

side of the metanotum, and the tubercles, white. Scutellum largely projecting, almost

equally from the base and apex; the sides bluntly keeled; the upper part depressed in

the centre, and having a tubercle-like projection on either side. Metathorax coarsely

and transversely striated and punctured; the aree complete; the supramedian area

with a longitudinal keel in its centre, from which run strong striations to the sides; it

widens towards the apex, and is longer than broad ; petiolate area hollowed; tubercles

ICHNEUMON,—(CEDICEPHALUS. 187

very large and stout. Petiole smooth and shining, hollowed in the centre, contracted

in the middle, the apex aciculate; postpetiole coarsely punctured, the middle bluntly

carinate on either side to near the apex. Gastrocceli transverse, indistinct. The second,

third, and the basal half of the fourth segments of the abdomen coarsely and longitu-

dinally punctured ; the apex shining and almost impunctate ; a transverse white mark

on either side of every segment (including the petiole), the marks becoming wider and

narrower as the apex is reached; ventral surface white in the centre, the apical

segments banded with white. Areolet 5-angled, converging above. Hind coxe

strongly punctured.

The following species has the general form (especially the thorax and abdomen) of

Joppa, but the antenne in the female are slender, and not dilated and compressed. The

punctuation of the thorax and abdomen varies in intensity. Brullé places the species

in Joppa, Cresson in Ichneumon. Actually it is intermediate between these genera.

150. Ichneumon (?) conicus. (Tab. VIII. fig. 22.)

Joppa conica, Bryllé, Hymén. iv. p. 286. no. 31; Cresson, Trans. Am. Ent. Soc. ii. p. 29 (g 2)".

_——— Ichneumon breviventris, Cresson, Proc. Ent. Soc. Phil. iv. p. 12 (go)?

Ichneumon conicus, Cresson, Proc. Acad. Phil. 1873, no. 1(¢ 2)’.

Hab. Mexico, Cordova!? (Sumichrast), Orizaba? (Sumichrast, Bilimek); Bnritisu

Honpuras, Belize (Blancaneaur).— ANTILLES, Cuba ?.

As the punctuation of the thorax and abdomen varies, I have no doubt that the

Cuban J. breviventris is an aberration, as Cresson suspected.

CEDICEPHALUS.

Cidicephalus, Cresson, Trans. Am. Ent. Soe. ii. p. 27; Proc. Acad. Phil. 2873, p. 129.

This genus is chiefly remarkable for having the head “unusually large and swollen,

very broad behind the eyes, the occiput deeply emarginate,” and the basal fovez on the

second abdominal segment “ broad, transverse, and very deep.” Cresson looks upon it

as only a subgenus of Ichnewmon. All the described species are from Cuba and

Mexico.

1. Gdicephalus longicornis.

(Edicephalus longicornis, Cresson, Trans. Am. Ent. Soc. ii. p. 27 (¢)'; Proc. Acad. Phil. 1873,

p. 129.

Hab. Muxico, Cordova! (Sumichrast).

2 BB 2

188 HYMENOPTERA.

2. Cidicephalus sororius.

Cidicephalus sororius, Cresson, Trans. Am. Ent. Soc. ii. p. 28(9)*; Proc. Acad. Phil. 1873,

p. 129.

Hab. Mexico, Cordova! (Sumichrast).

3. Gidicephalus glucidatus. (Tab. VIII. fig. 23.)

Niger, flavo-variegatus; annulo flagello antennarum, scutelli lateribus maculisque 2 mesonoti, flavis ; pedibus

anterioribus, femoribus posticis supra basique tibiarumque posticarum, nigris; stigmate testaceo. @.

Long. 11 millim.

. Hab. Guatemaa, Zapote (Champion).

Antenne as long as the body, thickened and compressed before the apex. Head

smooth, shining, impunctate, yellow behind; the vertex in the centre, a band going

from the back to the eyes, and the orbits narrowly behind, black; a narrow line runs

also from the clypeal fovee to the side. Thorax shining and almost impunctate, a few

punctures on the scutellum ; black; a broad line on the pronotum, the prosternum, the

meso- and metapleure, except a large black space (with a yellow mark in its centre),

the sternum, the tegule, two broad marks in the middle of the mesonotum, two smaller

and more rounded ones in front of the scutellum, the sides of the latter broadly, and

the apex narrowly, the suture of the mesonotum, the postscutellum, a transverse line at

the base of the metanotum, the apex of the metanotum (except a black line down the

centre and a large oval mark occupying the greater part of the metapleure), yellow.

The base of the metanotum is punctured; the apex transversely striated, with an

oblique slope, and scarcely hollowed in the centre. Petiole smooth, shining ; postpetiole

slightly punctured on the upper part. Gastrocceli transverse, deep, impunctate, almost

touching in the centre, the part between black and longitudinally striated; a little

beyond the gastroceeli is a deep transverse depression, black, and with large longitu-

dinal striations. The rest of abdomen shining, impunctate, and bearing long scattered

hairs; the postpetiole, the depression on the second segment, the base of the same

segment broadly, and of the other segments narrowly, black. The hind coxe are lined

with black all round at the base, and have a large black mark behind; the four

anterior legs are narrowly lined with black above; the hind femora are black all round

at the base and broadly so above, there being, however, a yellow space in the centre of

the black; the hind tibie are black at the base. The yellow of the legs has a fulvous

tinge. Areolet 5-angled, the lateral nervures converging above, the outer nervure with

a short bulla; nervures black; the stigma testaceous, black above.

4, Gidicephalus gracilicornis.

Cidicephalus gracilicornis, Cresson, Trans. Am. Ent. Soe. ii. p. 28(¢ 2)’; Proc. Acad. Phil. 1873,

p- 1380.

Hab. Mexico, Cordova! (Sumichrast).

CEDICEPHALUS.—TROGUS. 189

5. (idicephalus vicinus.

Cidicephalus vicinus, Cresson, Proc. Acad. Phil. 1873, p. 180 (¢)’.

Hab. Mexico, Orizaba! (Sumichrast).

ORTEZIA.

Ortezia, Cresson, Proc. Acad. Phil. 1878, p. 130.

In this subgenus the head is small; the scutellum broadly quadrate, shield-like, and

perfectly flat; the metathorax broad and without spines or tubercles; the legs short

and stout; the abdomen short, broad, ovate, depressed, longitudinally rugose or

aciculated, with the segments more or less constricted at the base. (Cresson.)

1. Ortezia egregia.

Joppa egregia, Cresson, Trans. Am. Ent. Soe. ii. p. 830 (?)'.

Ortezia egregia, Cresson, Proc. Acad. Phil. 1873, p. 180.

Hab. Mexico, Orizaba! (Sumichrast).

2. Ortezia aciculata.

Joppa? aciculata, Cresson, Trans. Am. Ent. Soc. ii. p. 830(¢ 2)’.

Ortezia aciculata, Cresson, Proc. Acad. Phil. 1873, p. 130.

Hab. Mexico, Cordova! (Sumichrast).

TROGUS.

Trogus, Panzer, Krit. Revis. 11. 1806, p. 80.

The species here included in this genus are typical forms, excepting perhaps

T. excellens, which has not the scutellum quite so sharply peaked as the others; but it

agrees so closely otherwise with 7. ornaticornis that I do not see how the two can be

separated generically. But see my remarks on pp. 136, 137.

1 (6). Wings violaceous throughout.

2 (3). Anterior half of the thorax and the anterior legs yellowish red . . . Jlatipennis.

3 (2). Thorax entirely bluish.

4 (5). Antennz broadly white in the middle, the head with only the inner

and lower orbits of the eyes yellow, the palpi blackish . . . . . ornaticornis.

5 (4). Antenne entirely black, face and palpi yellow . . . . - . . « ~ excellens.

6 (7). Wings with two violaceous bands . . . . . . 1 «ee eo @ «= (Olandita.

7 (6). Wings only violaceous at the apex.

8 (9). Abdomen largely marked with yellowish white, a transverse yellow

line on the metathorax, the legs more or less yellow . . - . inclyta,

9 (8). Thorax entirely black, the abdomen with only four small yellow

marks; the legs black, except the hind tarsi.. . . . . © « « pulchripennis.

190 - HYMENOPTERA.

1. Trogus latipennis.

Trogus latipennis, Cresson, Proc. Acad. Phil. 1873, p. 182 (2).

Hab. Mexico, Orizaba! (Sumichrast).

2. Trogus excellens.

Cerulea; facie (medio excepto), ore, palpis, tibiis tarsisque anticis, flavis; alis nigro-violaceis. ¢.

Long. 17 millim.

Hab. Guaremata, Purula (Champion).

Head and thorax closely and rather strongly punctured ; the middle of the meso-

pleura more shining and less closely punctured; the base of-the metanotum smooth,

shining, and impunctate. Petiole punctured, the postpetiole more strongly and closely:

a furrow runs through the middle of the latter, the furrow keeled on either side. The

rest of the abdomen strongly and coarsely punctured, the punctures running into

reticulations on the second and third segments; the apical segments are not so strongly

punctured, and the punctures are wider apart. Arez of the metanotum all present,

except the upper median. Scutellum raised into a blunt peak. Gastrocceli large,

deep, shining in the centre; the space between the two longitudinally striated. The

entire face (except a black line which runs down from the antennee to the clypeus), the

inner orbits of the eye, and the mandibles and palpi, bright yellow. Wings large;

areolet broad at the bottom, the lateral nervures curved and meeting above. The

abdominal segments are not much constricted at the base.

3. Trogus ornaticornis. (Tab. IX. fig. 2.)

Cerulea; antennarum articulis 2°-10™ flavo-albidis, tibiis anticis sordide albis, alis violaceis. ¢.

Long. 17 millim.

Hab. Guatemaua, Purula (Champion).

Body closely punctured all over; mesopleura transversely and coarsely striated.

Front deeply excavated immediately above and below the antenne; the excavation

smooth, shining, and impunctate; eyes projecting, the head retreating behind them ;

head not buccate. Scutellum not very much elevated above the scutum, shining,

covered with scattered punctures, the upper part bluntly rounded, and with a deep

depression at the base; postscutellum smooth, shining, impunctate, and with a deep

wide transverse suture at its apex. The centre of the metanotum is broadly raised,

and more shining and less punctured than the rest; the apex with a rather abrupt

slope ; coarsély ‘punctured ; the central and lateral keels well developed. Basal half

of the petiole depressed in the centre, shining, faintly striated; the rest punctured

like the other abdominal segments; the petiole at the base with a keel on both sides,

which is prolonged into the end along the middle of the thicker apical portion.

Abdominal segments convex above, strongly constricted at the base. Gastrocceli deep,

TROGUS.—JOPPA. 191

double as wide as long. Coxte punctured like the abdomen, the punctuation on the

femora and tibie less strong. Areolet triangular above, the nervures touching, the

lateral outer nervure curved. Below each of the antennz and touching the eyes is

a whitish-yellow mark. The entire body is covered with a close, fuscous-black

pubescence. |

4. Trogus blandita. (Tab. IX. fig. 1.)

Trogus blandita, Cresson, Proc. Acad. Phil. 1873, p. 182 (¢ 9)’.

Joppa eleganiula, ¥. Smith, Descr. of New Species of Hymen. p. 233 (1879) (@)?.

Hab. Mexico, Orizaba ! (Sumichrast); GuaTemata, Cubilguitz, Panzos, Senahu, and

Sabo in Vera Paz, Zapote, Las Mercedes 3000 feet, San Isidro, Coatepeque 1300 feet

(Champion); Costa Rica, Cache? (Rogers); Panama, Volcan de Chiriqui 2500 to 3000

feet, Bugaba (Champion).

A common and widely.distributed species in Central America.

5. Trogus inclyta.

Joppa inclyta, Cresson, Trans. Am. Ent. Soc. i. p. 297 (9).

Trogus inclyta, Cresson, Proc. Acad. Phil. 1873, p. 183.

Hab. Mexico, Cordova ! (Sumichrast).

6. Trogus pulchripennis. (Tab. VIII. fig. 25.)

Joppa pulchripennis, F. Smith, Descr. of New Species of Hymen. p. 232 (1879) !.

Hab. Guatemaa, Cubilguitz (Champion); Costa Rica, Cache! (Rogers); Panama,

Volcan de Chiriqui 2000 to 6000 feet, Bugaba 800 to 1500 feet (Champion).

JOPPA.

Joppa, Fabricius, Syst. Piez. p. 120.

The species of this genus are probably the most elegant, as regards coloration and

shape, among the Ichneumonide. Yellow or lemon-yellow is the predominating

ground-colour, the head, thorax, and, more rarely, the abdomen being marked with

black; the wings are yellowish or hyaline, marked with black, or, more rarely,

entirely black. They are (except a few species from India, South Africa, and

Australia) natives of the Neotropical region. It is very difficult to point out any

characters whereby the species, as a whole, may be distinguished from Jchnewmon, and

especially from Trogus.

192

HYMENOPTERA.

A. Areolet triangular, or, at least, with the lateral nervures distinctly converging

Synopsis of the Species.

1 (9). Mesonotum without black.

2 (8). Wings hyaline, black at base. , anes

3 (4). Head entirely black . . wee ee ew we ew e)=«6melanocephala.

4 (3). Head only black above.

5 (6). Hind coxe entirely yellow, base of second abdominal segment not

black, extreme apex of hind femora only black . varipes.

6 (7). Hind coxe entirely black ; metanotum smooth, impunctate ; abdo-

men longitudinally striated . variolosa.

7 (6). Hind cox yellow, with two black spots ; abdomen longitudinally

aciculate, metathorax longitudinally striated . . . . . . . elegantula.

8 (2). Wings entirely black . . 2. . 2. 1 1 1 1 1 ow ew ee sw ~fuemipennis.

9 (1). Mesonotum marked with black.

10 (11). Wings entirely yellow . . ... . oe . alternans.

11 (12), Wings yellowish, a small fascia at base of radial cellule ; metathorax

with two short spines behind; petiole black . . . .. suturalis.

12 (15). Wings yellowish, the apex smoky.

13 (14). Apex of tibiz and stigma black . . . . . . « «© «© « « « melanostigma.

14 (13). Apex of tibie and stigma yellow. . 1. . . « «6 «©. « zanthostigma.

15 (22). Wings yellowish, the base and apex black.

16 (19). Pleurz entirely yellow.

17 (18). Scutellum and base of metathorax black decorata.

18 (17). Scutellum and base of metathorax yellow . incerta.

19 (16). Mesopleurz black.

20 (21). Apex of hind femora black, apex of tibize yellow maculicornis.

21 (20). Apex of hind femora yellow, tibiz broadly black hilaris.

22 (27). Wings violaceous, the middle more or less hyaline.

23 (26). Pro- and mesothorax and head black, femora broadly black.

24 (25). Scutellum flat in centre, third abdominal segment shorter than all

the following together rogersi.

25 (24). Scutellum sharply peaked, third abdominal segment almost longer

than all the succeeding together . oe nigriceps.

y (23). Pronotum and pleure yellow, hind knees only black 2 modesta.

7 (22). Wings hyaline, apex and one or two fasci& in the middle black.

38 (83). Mesonotum entirely black.

29 (80). Pleure entirely yellow, hind knees only black chiriquensis.

above ; abdomen longitudinally striated*.

* Brullé (Hymén. iv. pp. 270 & 287) divides the genus into two divisions, but he gives the same distinctive

characteristic to both, namely, the possession of a pentagonal areolet. His first section has certainly the

areolet pentagonal ; but I cannot make out if his second group has it 4-angled, as he does not mention its

form in any of the species, other than in the (probably erroneous) sectional heading on p. 287.

JOPPA. 193

30 (29). Pleure entirely black, femora broadly black.

31 (32). Metanotum black, a small fascia in middle of hind wings. . . . geniculata.

32 (31). Metanotum yellow, no fascia in hind wings . . . . . . . . #anthostoma.

33 (28). Mesonotum yellow, with three black longitudinal lines; metanotum

spotted with black . . «© 1. 1 ee ee ee ew ew ee Sumichrasti.

1. Joppa melanocephala. (Tab. IX. fig. 4.)

Joppa melanocephala, Cameron, Ent. Mo. Mag. xxi. p. 104’.

Flavo-testacea ; capite, antennis, abdominis apice tarsisque posterioribus, nigris; alis flavo-hyalinis, apice

violaceis, stigmate flavo.

Long. 21-22 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet, Bugaba 800 to 1200 feet 1

(Champion).

Head shining, smooth, bearing a few shallow punctures, especially on the face ;

mandibles and palpi yellow. Scape of the antenne punctured. Sides of the pronotum

obscurely striated in front. Mesonotum semiopaque, closely punctured all over, the

punctures being more widely separated along the sides. Meso- and metapleure punc-

tured, obscurely striated. Scutellum longitudinally striated, the striations large,

widely separated, especially at the sides, where they form almost keels; the depression

at the base is also striated. Metanotum punctured, transversely striated in the

middle; there is one large median area, the base of which is rounded; on either side

is another area of nearly equal length ; outside of these again is one which is still

longer, as it originates further back ; there is a deep depression between the smooth,

shining, impunctate postscutellum and the metanotum, which rises gradually from this

hollow, it being there smooth and shining to the commencement of the median area.

Petiole smooth, shining, hollow in the middle, the sides obscurely margined, the apex

punctured ; postpetiole longitudinally striated, the striations large, the centre hollow.

Gastrocceli transverse, large, deep, united by a wide furrow, which, like the whole of

the segment, is striated ; the striation on the abdominal segments is strong, becoming

gradually weaker towards the apex of the third, which is scarcely striated there ; the

apical segments are not striated, but are obscurely punctured. Coxe punctured. The

violaceous cloud in the fore wings commences at the base of the radial cellule.

A specimen from Bugaba has three blackish, almost confluent, marks on the meso-

notum. Sometimes the apex of the third segment is blackish and the apex of the

clypeus yellow; the scape is sometimes piceous. As in most of the species, the yellow

on thorax varies from yellow to fulvous.

2. Joppa varipes. (Tab. IX. fig. 9.)

Joppa varipes, Cameron, Ent. Mo. Mag. xxi. p. 104°.

Flavo-testacea ; antennis, vertice, abdominis apice, tarsis, tibiarum apice femoribusque pro parte, nigris ; tarsis

albidis ; alis flavo-hyalinis, apice fumatis, stigmate flavo.

Long. 11-12 millim. |

BIOL. CENTR.-AMER., Hymenopt., July 1885. 2 cc

194 HYMENOPTERA.

Hab. Panama, Volcan de Chiriqui 2500 to 6000 feet 2 (Champion).

Occiput, the upper part of the back, and the front of the head to the base of the

antenne, except the orbits of the eyes in front, black, smooth, shining, impunctate.

Mesonotum shining, bearing a few scattered punctures. Scutellum with prominent longi-

tudinal striations. Metanotum hollow in the middle, the hollow transversely striated ;

the top smooth, shining, slightly punctured, as are also the sides. Petiole smooth,

shining ; postpetiole longitudinally striated. Gastrocceli transverse, shallow, smooth

shining; the second, third, and basal three fourths of fourth segment longitudinally

striated ; the apex of the fourth shining, bearing a few punctures; the other segments

impunctate, shining, as are also the coxe; the third and the following abdominal

segments are black entirely, except that there is usually a dark fulvous mark on either

side of the third above. Tarsi black, except the anterior pair at the base; femora and

the four anterior tibie more or less lined with black behind; posterior tibize white,

black at the extreme base and broadly so at the apex. Labrum in the centre, the apex

of the mandibles, and the spurs, black; face and petiole yellowish; the thorax may be

testaceous or dark fulvous. The body is closely covered with fuscous pubescence,

almost black on the abdomen. The cloud in the apex of the wing commences a little

beyond the stigma. ‘The male does not differ in coloration from the female.

———~- 3. Joppa elegantula.

Joppa elegantula, Cresson, Trans. Am. Ent. Soc. ii. p. 82 (¢)’.

Hab. Mexico, Orizaba, Cordova ! (Sumichrast).

A specimen from Sabo, Vera Paz (Champion), is perhaps referable to this species,

it differing from the type merely in having the hind coxe entirely black, and the tibie

black at the base, and in having a small yellow spot on either side of the third abdo-

minal segment. It differs from J. varipes in having only a small triangular black mark

on the vertex covering the ocelli, in the hind femora being entirely black, except at the

base, and in the hind coxe being black; the metanotum behind is not so strongly

striated, and the second segment is black at the base.

4, Joppa variolosa.

Joppa variolosa, F. Smith, Descr. of New Species of Hymen. p. 2321.

Hab. Costa Rica, Caché 1 (Rogers).

From the typical J. elegantula this species differs in having the hind coxe and

trochanters black, except at the extreme apices; the four anterior femora black, except

at the base and apex (elegantula has the “tips of them behind” only); all the tibie

black at the base, the front pair lined also with black behind; and the metanotum

can scarcely be called “longitudinally rugulose.” It is more slender than the above-

described variety from Sabo, with which it agrees in the amount and arrangement of

JOPPA. 195

the black; but the tibie are distinctly white, the two basal segments of the abdomen

pallid lemon-white, and the metanotum behind is not so much excavated.

5. Joppa fumipennis. (Tab. IX. fig. 11.)

Joppa fumipennis, Cresson, Trans. Am. Ent. Soc. ii. p. 32 (d 2)’.

Hab. Mexico, Orizaba, Cordova! (Sumichrast); Guatemala, Panima in Vera Paz

(Champion); Nicaragua, Chontales (Janson).— VENEZUELA.

A Venezuelan specimen has the tibie without any yellow annulus; the Guatemalan

individual has it very broad on all of them.

6. Joppa alternans.

Joppa alternans, Brullé, Hymén. iv. p. 278. no. 167.

Hab. Mexico}.

7. Joppa suturalis.

Joppa suturalis, Brullé, Hymén. iv. p. 281. no. 21’.

Hab. Mexico}.

8. Joppa melanostigma. (Tab. IX. fig. 10.)

Joppa melanostigma, Cameron, Ent. Mo. Mag. xxi. p. 104°.

Flava; antennis, vertice, mesonoto, abdominis apice, geniculis posterioribus lete, tarsisque posterioribus,

nigris ; alis flavo-hyalinis, apice fumatis, stigmate nigro.

Long. 14 millim.

Hab. Panama, Bugaba!, Volcan de Chiriqui 2500 to 3000 feet (Champion).

Face pallid yellow (perhaps discoloured), marked with some scattered microscopic

punctures; clypeus broad, sharply transverse, the sides rather acute; labrum and the

apex of the mandibles black; the top of the head is entirely black, and the black

extends, as a triangular prolongation, nearly to the base of the antenne. Mesonotum

shining, impunctate, almost glabrous. Scutellum broad, flat, keeled at the sides,

which bear a yellow mark; the top with a few punctures. Metanotum distinctly

areolated, punctured, very slightly excavated behind. -Postpetiole, the second segment,

and the basal three fourths of the third segment, longitudinally striated above, the sides

punctured and with a conspicuous keel; apical segments impunctate. The third

segment bears a large black mark, contracted at the apex in the middle; the

following segments are entirely black. The four anterior knees are only black

behind ; the posterior knees entirely so, there being double the amount of black on

the femora that there is on the tibia; on the front pair it is much less. The black

cloud is present in both wings; the areolet is sharply triangular above.

The specimen from the Volcan de Chiriqui wants the black on the third abdominal

segment, and the black on the hind knees scarcely extends on to the femora.

2 cc 2

196 HYMENOPTERA.

9. Joppa xanthostigma. |

Joppa xanthostigma, Cameron, Ent. Mo. Mag. xxi. p. 105°.

Flava ; antennis, vertice, mesonoto, mesosterno, abdominis apice, tarsis posterioribus tibiarumque posticarum

apice, nigris ; alis flavis, apice fumatis, stigmate flavo. ¢.

Long. 13 millim.

Hab. Costa Rica, Caché ! (Rogers).

Body smooth, shining, impunctate, covered with a dense blackish or fuscous pubes-

cence. Petiole shining, impunctate, the rest of the back of the abdomen obscurely

punctured, the punctures scarcely visible on account of the pubescence. Metanotum

excavated in the middle behind ; the arez obsolete, but there is a curved keel on each

side. There is a small black line at the base of the third abdominal segment; the

fourth and following segments are black, except a fulvous fascia in the middle of the

fourth. Areolet sharply triangular above.

Differs from J. melanostigma in the abdomen not being longitudinally striated, in

the cloud at the apex of the wing extending to the areolet, in there being no black on

the femora, in the breast being black, &c.

10. Joppa decorata.

Joppa decorata, Cresson, Trans. Am. Ent. Soc. ii. p. 82 (¢)’.

Hab. Mexico, Orizaba ! (Sumichrast).

11. Joppa incerta.

Joppa incerta, Cresson, Proc. Acad. Phil. 1873, p. 181°.

Hab. Mexico, Orizaba ! (Sumichrast).

12. Joppa maculicornis.

Joppa maculicornis, Cameron, Ent. Mo. Mag. xxi. p. 105°.

Flava; antennis, capite postice, mesonoto, mesopleuris, metanoti basi, abdominis apice, tarsis posterioribus,

femoribusque posterioribus dimidio apicali, nigris; antennarum annulo medio albo; alis nigris, medio

flavo-hyalinis.

Long. 12 millim.

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet 1, Bugaba (Champion).

Head smooth, shining, impunctate; the black marking does not extend much beyond

the eyes behind; in front it reaches the commencement of the frontal depression and

projects to a point in the middle, and, to a less extent, on either side ; labrum and the

apex of the mandibles black. Antenne stout, as long as the thorax and abdomen

together ; scape yellow beneath. Thorax densely pubescent ; mesonotum shagreened ;

the black does reach the prothorax at the sides, and there are two short yellow bands

at the sides. Scutellum smooth, shining, margined at the sides, broad and raised at the

JOPPA. 197

base, the apex flat, the upper surface covered with scattered microscopic punctures ;

postscutellum smooth, shining, impunctate ; the thorax on either side of it reticulated.

Metanotum impunctate, the apex a little excavated in the middle; the aree distinct.

Postpetiole and the second and third segments longitudinally striated above, smooth,

with scattered punctures along the sides; base of the fourth segment obscurely striated,

the apex slightly punctured; apical segments with scattered punctures, and densely

pilose. Sheath of the ovipositor densely pilose. On the anterior femora the black is

only behind, on the posterior femora it extends all round. As in most of the species,

the yellow on the legs tends to change to fulvous.

_ 18. Joppa hilaris.

Joppa hilaris, F. Smith, Descr. of New Species of Hymen. p. 232".

Hab. Costa Rica, Caché ! (Rogers); Panama, Bugaba 800 to 1500 feet (Champion).

This species is readily known from J. maculicornis by the femora being entirely

yellow, by the areolet not being triangular at the top, the lateral nervures but slightly

converging above, and by the abdomen being perfectly smooth, and not in any way

striated.

14. Joppa nigriceps. (Tab. IX. fig. 5.)

Joppa nigriceps, Cameron, Ent. Mo. Mag. xxi. p. 1051.

Nigra; metathorace, abdominis segmentis 1—2, coxis, trochanteribus, femoribus tibiisque pro parte, flavis; alis

violaceis, albo-maculatis.

Long. 18-19 millim.

Hab. Guatemaua, Sabo in Vera Paz! (Champion); Panama, Volcan de Chiriqui?

( Champion).

Head with scattered punctures, aciculated on the top; mandibles and palpi yellow.

Mesonotum with scattered punctures, semi-opaque; pleure rugose, longitudinally

striated, except in the centre of the mesopleura, which is shining, impunctate.

Scutellum sharply gibbous, acute at the top, the sides keeled, the space between

the keel and the raised central peak hollow. Metapleura transversely striated.

Abdomen entirely longitudinally striated above. The anterior femora are black,

except at the base and apex and a small part of the middle in front; the inter-

mediate femora have the apical three fourths, and the posterior pair a little more

than the apical third, bluish-black. The four anterior tibie are bluish-black behind,

the posterior tibie entirely yellow. Generally the part of the wing between the base

and the apex of the stigma is hyaline, and there is usually a hyaline spot in the black

basal part. The hind wings are only smoky at the apex. Mandibles, palpi, and a

spot on either side of the clypeus, yellow.

198 HYMENOPTERA.

15. Joppa rogersi.

Joppa rogersi, Cameron, Ent. Mo. Mag. xxi. p. 105°.

Hab. Costa Rica, Volcan de Irazu 6000 to 7000 feet ! (Rogers); Panama, Volcan de

Chiriqui 2000 to 4000 feet (Champion).

In size, coloration, and punctuation this species does not differ much, if at all, from

the preceding; the only differences of any importance that I can find between them

are that the scutellum is not raised into a sharp peak in the centre, it being flat along

its entire extent, and traversed by two or three carinz, the sides being also keeled ; that

the third abdominal segment is shorter than the following segments together (the

opposite being the case in J. nigriceps), and that the metathoracic arew are all clearly

defined, and the pronotum not transversely striated.

16. Joppa modesta. (Tab. IX. fig. 8.)

Joppa modesta, F. Smith, Descr. of New Species of Hymen. p. 233°.

Hab. Costa Rica, Caché ! (Rogers).

17. Joppa xanthostoma. (Tab. IX. fig. 6.)

Joppa xanthostoma, Cameron, Ent. Mo. Mag. xxi. p. 105*.

Nigra; ore, facie, palpis, metathorace, coxis, trochanteribus, femoribus pro parte, tibiis anterioribus pro parte,

posticisque fere totis, flavis; alis hyalinis, apice fasciaque medio violaceis.

Long. 20 millim,

Hab. Costa Rica, Caché (Rogers).

Head smooth, shining; the face and sides with some scattered punctures. Meso-

notum shining, smooth, finely punctured, the punctures wide apart. Pleure finely

punctured, striated posteriorly. Scutellum flattish, smooth, shining, indistinctly punc-

tured ; postscutellum smooth, shining, impunctate. Base of the metanotum smooth,

shining, impunctate ; the rest irregularly reticulated and striated; the ares not very

clearly defined ; the metanotum has but a gentle slope, and the centre behind is a little

hollowed. Petiole smooth, shining; postpetiole, and the second and third segments,

longitudinally striated; the rest of the abdomen impunctate, smooth, and shining.

Gastroceeli large, deep, transverse, shining in the centre; the sides striated. The

mandibles, palpi, labrum, clypeus, and the lower orbits of the eyes are yellow, the

black extending down the centre of the face from the antenne to the clypeus. The

prosternum is yellow, as is also the hind portion of the mesothorax and the whole of

the metathorax. The four anterior tibie and tarsi are entirely black behind; the

anterior femora are black, except at the base and apex ; the middle femora have about

the apical half black; the posterior tarsi are entirely black, as are also the hind

* The localities “Guatemala and Panama,” given for this species (loc. cit.), are erroneous. I have only seen

it from Costa Rica as yet.

JOPPA. 199

knees. The wings are as in J. geniculata, except that there is no black fascia in the

middle of the hind ones.

A stouter insect than J. geniculata, and readily known from it by the absence of

black from the metathorax, and of a black fascia in the hind wings.

18. Joppa geniculata.

Joppa geniculata, Cameron, Ent. Mo. Mag. xxi. p. 105’.

Nigro-violacea; facie, metapleuris, abdominis segmentis 1-2, coxis, trochanteribus, femoribus tibiisque pro

parte, flavis; alis violaceis, albo-fasciatis.

Long. 16-18 millim.

Hab. Guaruma.a, Cubilguitz! and Panima in Vera Paz (Champion); Panama, Volcan

de Chiriqui 2500 to 4000 feet ! (Champion).

Face almost impunctate ; mesonotum shining, minutely punctured, the lower part and

the sides of the pleure punctured. Scutellum flat, the sides bordered, very obscurely

striated, and with a few punctures on the top. Base of the metanotum smooth and

shining, the rest punctured, striated and reticulated irregularly, the reticulations being

most conspicuous on the area next the upper median; middle of the metanotum exca-

vated, but not very deeply. Petiole smooth, shining; postpetiole broad, hollow in the

centre, longitudinally striated above ; the sides smooth, impunctate ; the second and

the basal three fourths of the third segment longitudinally striated, punctured at the

sides, the apical segment microscopically punctured. The inner and lower orbits of the

eyes, the face below the antenne, the mandibles, and the palpi are lemon-yellow ; but

there may be a large black mark below the antenne extending to the clypeus or near

to it. The sides of the collar are sometimes more or less yellow. ‘The tibize and

femora are entirely yellow in front; the anterior ones are almost entirely black

behind ; the posterior knees and the apices of the tibiz only are black; the anterior

tibie are yellowish at the base; the third abdominal segment at the sides is usually

yellow above. The metanotum is sometimes yellowish at the sides, and there may be

a yellow spot in the centre, or it may be entirely black. The anterior wings are usually

violaceous in front of the areolet and behind the stigma, but there is generally a long

fascia on the cellule; the posterior ones have the apices and a narrow fascia in the

middle violaceous.

19. Joppa chiriquensis.

Flava; antennis, vertice, mesonoto, scutello, geniculis posticis tarsisque posterioribus, nigris; alis hyalinis,

bifasciatis, stigmate nigro.

Long. 12 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 3000 feet (Champion).

Smooth, shining, impunctate. Metanotum obscurely and irregularly reticulated ;

postpetiole and the second and third abdominal segments strongly longitudinally striated.

200 HYMENOPTERA.

Gastroceli transverse, narrower on the inner side. The black on the vertex extends

right across and halfway down behind, and in front projects into a sharp triangle.

The mesonotum is black to the scutellum ; the latter may be entirely black or have the

sides yellow. There is an irregular black mark in the centre of the second and third

segments at the base. The anterior tibiz and the apices of the femora have an obscure

black line on the upper side. The apices of both wings are broadly infuscated, and

there is also, in both, a large fascia before the middle,

————~ 20. Joppa sumichrasti. (Tab. IX. fig. 7.)

Joppa sumichrasti, Cresson, Trans. Am. Ent. Soc. ii. p. 81 (¢ 2)’.

Hab. Mexico, Orizaba, Cordova! (Sumichrast); GUATEMALA, Cerro Zunil 4000° to:

5000 feet, Panima in Vera Paz (Champion).

This is a variable species so far as the quantity of black on the thorax and abdomen

is concerned. It is easily known from J. chiriquensis by the black on the mesonotum

being divided, by there always being black on the metanotum, and by the stigma being

yellow.

B. Areolet quadrangular, large, a little longer than broad, scarcely angled in the middle,

where the recurrent nervure is received ; gastroceli semiobsolete ; abdominal segments

not striated.

21. Joppa maculicollis.

Flava; antennis, vertice, macula pronoti, tegulis, mesonoto cum scutello, abdominis apice, coxis posticis,.

femorum posticorum dimidio basali, tarsis posterioribus tibiisque posticis, nigris; alis hyalinis, stigmate

et apice nigris. 9°.

Long. 18 millim.

Hab. Panama, Bugaba (Champion).

Antenne as long as the body, of the usual form; the scape yellow on the lower side.

Head impunctate; the tips of the mandibles, the vertex in the centre in front and

broadly behind, black. Pro- and mesothorax impunctate, shining. Metanotum trans-

versely striated, except in the centre behind, and without distinct tubercles. Scutellum

keeled along the sides. Abdomen a little longer than the head and thorax ; the apex

obliquely truncated and a little compressed laterally. Petiole smooth, impunctate ;

the other segments obscurely aciculate. Gastrocceli semiobsolete. The sheaths of the

ovipositor originate from the bottom of the venter and are directed obliquely upwards,

projecting above the top of the dorsum.

ABZARIA

Eyes margined; two, slightly curved, compressed laterally, a little dilated at the

apex, tubercles on the hollow above the antenne. Scutellum not margined. Petiole

ABZARIA, 201

bluntly carinate; postpetiole strongly punctured, more than double as wide as high.

Gastrocceli obsolete, Areolet 5-angled, the lateral nervures converging and nearly

touching above. Head not buccate. Metathoracic spiracles large, acutely oval.

The form of the petiole, it being broader than high, places this genus in the

“‘TIchneumones platyuri” of Wesmael, but it is very distinct from any of the genera

of that group.

1. Abzaria latipetiolaris. (Tab. IX. fig. 3.)

Nigra; antennis (annulo excepto), facie, orbitis, palpis, linea pronoti, tegulis, lineis 2 mesonoti, scutello,

maculis 2 mesopleuralibus, maculis 6 metathoracis, abdominis segmentibus apicibus pedibusque, flavis ;

alis hyalinis, stigmate nigro.

Long. 13 millim.

Hab. Mexico, Orizaba (Bilimek).

Head narrower than the mesothorax, retreating behind the eyes, which are margined,

the margin being especially developed on the inner side; ocelli raised; clypeus almost

transverse at the apex; labrum with a long fringe of hair; clypeal fovee large, deep ;

face punctured. The head is black behind and on the vertex, except at the eyes; the

rest entirely yellow, except the mandibles at the base and apex, where they are piceous-

black. Antenne stout, opaque, covered with a microscopic down; the joints closely

joined together. Thorax smooth, shining, impunctate, sparsely covered with scattered

down. ‘The yellow line on the pronotum is broadest in the middle, and does not extend

the entire length ; the two lines on the mesonotum are shorter and thinner; the marks

on the mesopleure are large, the upper one somewhat triangular, situated immediately

below the tubercles under the tegule (these being also yellow) and smaller than the

other, which is in the centre near the sternum; the mark on the metapleura is oval and

shorter than the smallest on the mesopleura. The pleure are sparsely impressed with

large punctures. Scutellum large, flattish. Metanotum coarsely and rugosely reticulated ;

the apex semiperpendicular; the arez distinct; petiolate area wide; supramedian area

much wider than long, smooth, shining, impunctate, except at the extreme apex, where

it is rugose ; tubercles blunt ; there is a yellow mark on either side at the base and a

larger one on either side of the apex close to the top. Abdomen covered all over with

large, clearly separated punctures. The legs are entirely yellow, except the knees, a

line above the hind femora, the hind trochanters, and a large mark at the base and a

smaller one at the apex on the inner side of the posterior coxe, all black.

Subfam. CRY PTITNA.

This extensive group is very numerously represented, especially by species of the

genus Mesostenus, in the Neotropical Region. I question if it can be separated from the

“‘ [chneumonides” by any one character ; but generally the “ Cryptides” are to be known

from them by the ovipositor projecting to a greater or less extent, by there usually being

BIOL. CENTR.-AMER., Hymenopt., August 1885. 2 DD

202 HYMENOPTERA.

«&

a well-defined longitudinal suture on the mesopleura, by the second abdominal segment

not bearing gastroceeli, while generally the mesonotal sutures are distinct.

The areolet is 5-angled, never petiolate, sometimes large, often very small; the outer

nervure not unfrequently pellucid or entirely absent. The abdomen is depressed, its

petiole slender, and in the male the postpetiole is rounded, or at least not distinctly

transverse, never sessile. The metathoracic ares are never so well-developed as in the

“Tchneumonides”; often they are absent entirely. There are sometimes one or two

transverse keels on the metanotum, often none. Many species have well-developed

spines on the metathorax.

The generic distinctions are often far from clear. If we use the generic names as

defined by Gravenhorst and the older authors, we can, as a rule, refer our species to

such genera as Cryptus, Mesostenus, Phygadeuon, and Hemiteles ; but if we were to limit

them according to the views of Forster and Thomson, as these authors have arranged the

European species, we should be under the necessity of creating numerous new

genera. In the present state of the science, however, it seems to me very undesir-

able to do so. |

CRYPTUS.

Cryptus, Fabricius, Syst. Piez. p. 70.

This is a genus of world-wide distribution. In Central America we find two well-

marked groups—one of a northern type, with black head and thorax and red abdomen ;

the other with reddish bodies, and the wings fuscous with yellow bands, or yellow

with fuscous bands; this latter type of coloration being a not uncommon one in South

America. |

A. Head and thorax black ; abdomen red. (Species 1-6.)

a. Legs black. (Species 1-5.)

1. Cryptus bicolor. (Tab. IX. fig. 12.)

Cryptus bicolor, F. Smith, Descrip. of New Species of Hymen. p. 231°.

Hab. Costa Rica, Volcan de Irazu 6000 to 7000 feet! (Rogers).

This is a larger and stouter species than C. montezuma; the silvery pubescence on

the head and thorax is, if anything, denser ; the scutellum more shining, and with the

shallow punctures more widely scattered; the triangular area found in the middle of the

metanotum in C. montezwma is not clearly defined, nor is there an angled cellule at its

base ; the lower transverse keel is not angled at the sides, it forming a curve from side

to side, while in the other species it is quite straight in the middle, and with the sides

angled, while the abdomen is stouter and longer.

CRYPTUS. 203

2. Cryptus montezuma.

Niger ; abdomine (basi excepta) rufo; alis fumatis; terebra quam abdomen fere longiore.

Long. 13 millim.; terebra 63 millim.

Hab. Mexico, Ciudad in Durango 8100 feet (Forrer).

Head and thorax finely and closely rugose; a tubercle beneath the antenne; the

inner orbits obscure yellowish-white ; face projecting ; front deeply excavated above the

antenne, shining, transversely striated. Antenne longish; first joint of the flagellum

nearly as long as the two following together, the basal joints thickened at their apices.

Mesonotal sutures subobsolete; scutellum as closely punctured as the rest of the

mesothorax, the sides carinate. :Metathoracic aree mostly clearly defined, the basal

area indistinct, the supramedian much broader than long, of the lateral areze only the

spiracular is defined ; there is a blunt broad tooth on either side in front; from this a

keel curves up to the top, joining the keel of the supramedian area at the side, this

latter area being quite straight at the bottom. Petiole aciculated, the sides carinate,

the basal three fourths black ; apex scarcely aciculate ; the rest of the abdomen shining,

obscurely aciculate. Areolet 5-angled, the sides converging at the top, so that it is

there not half the length that it is at the bottom.

This species may be known from C. americanus, Cresson, by the smoky wings;

by the first joint of the flagellum being much longer than the second, by the strongly

punctured scutellum, and by the carine on the petiole extending to the extreme

apex. ,

3. Cryptus monticola.

Long. 84 millim.; terebra 3 millim,

Hab. Mexico, Ciudad in Durango 8100 feet (Forrer).

Similar in coloration to the preceding species, but differing otherwise in having the head

and mesonotum less strongly punctured, the punctures being clearly separated ; by the cly-

peus being separated from the projecting face by a transverse depression ; by the sutures

on the mesonotum being distinct, broad, and deep. The scutellum is shining, with only

scattered punctures, and the sides are not carinate; the carina which runs from the

tubercles at the side of the metathorax is not straight above nor angled where it touches

the supramedian area; the basal and lateral are are obsolete, and a curved oblique

suture runs from near the spiracles to the posterior coxe, while the terebra is only about

three fourths of the length of the abdomen. The first joint of the flagellum is about

one third longer than the second.

4, Cryptus nivalis.

Niger; abdomine rufo, basi et terebra nigris ; alis fumatis.

Long. 10 millim.

2 pp 2

204 HYMENOPTERA.

Hab. Mexico, Ciudad in Durango 8100 feet (Forrer).

Antenne as long as the body, stout, third joint longer than the fourth, almost bare.

Head coarsely and closely punctured, bearing an indistinct fuscous pile; face flat, the

clypeus projecting in the middle. Thorax closely and rather strongly punctured ;

mesonotal sutures obsolete; scutellum rather flat, shining, longer than broad, the sides

keeled, the top bearing widely set-apart punctures. Metathorax with two transverse

arcuate keels, the space between them reticulated, the rest coarsely punctured ; the

pubescence silvery-white. Abdomen shining, the petiole laterally keeled; terebra

scarcely so long as the petiole. Wings short; areolet broader than long, the lateral

nervures straight. Coxe and trochanters punctured, covered with a silvery pile; a

reddish ring at the base of the hind femora; anterior tarsi, tibie, and the apices of the

femora, dirty white in front.

The short ovipositor separates C. nivalis from the rest of the black-legged species ;

the obsolete parapsides form another distinctive character.

5. Cryptus argentifrons.

Niger ; tibiis, tarsis anterioribus apiceque tarsorum posticorum, albis ; abdomine rufis, basi et apice nigris ; alis

fere hyalinis, nervis et stigmate nigris. <¢.

Long. 12 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne nearly as long as the body, stout, densely and shortly pilose; the third joint

a little longer than the fourth. Head closely punctured all over, covered with a silvery-

white pubescence ; a large roundish flat tubercle below the antenne ; clypeus project-

ing, more shining than the rest of the head, its apex and the inner orbits dirty white.

Thorax densely punctured, covered with a silvery-white pubescence; mesonotal sutures

deep. Scutellum shining, punctured, the punctures wide apart ; the sides at the base

keeled. Metathorax covered with long silvery-white hair; a short, blunt tubercle at the

side. Abdomen longer than the head and thorax together; petiole obsoletely keeled

laterally, shining, the top a little depressed at the base; genital organs large, black,

minutely punctured. Legs longish ; coxe punctured, covered with longish silvery-white

hair. The anterior femora are white in the middle in front; the tibie and tarsi almost

wholly white; the metatarsus and the apical joint of the hind tarsi are white. Areolet

moderate, the lateral nervures converging above.

Allied to C. albitarsis, Cresson.

b. Legs red. (Species 6.)

6. Cryptus sodalis.

Niger ; abdomine, femoribus, tibiis tarsisque, rufis ; alis hyalinis.

Long. 10 millim.; terebra 5 millim.

Hab. Mexico, Northern Sonora (Morrison).

CRYPTUS. 205

Head and thorax closely rugose all over, semiopaque, covered with short, white, glis-

tening pubescence; eyes narrowly edged with white; clypeus projecting roundly in

the middle; a short tubercle on the face below the antenne. The antenne are nearly

as long as the body; the base of the flagellum is obscure testaceous, the third and

the fourth joints obscure white; first joint of the flagellum as long as the second and

third together, the third joint a little longer than the fourth. Mesonotal sutures

subobsolete. Scutellum shining, with some punctures on the top, the sides rugose.

Metathorax more strongly rugose than the mesothorax ; its arewe obsolete; a distinct

blunt spine on either side, united by a carina which goes round the top. Petiole shining,

depressed in the centre at the base, the sides keeled above, the apex aciculated, the

extreme base black ; the rest of the abdomen finely and closely punctured. Hind femora

curved. Areolet 5-angled, the sides scarcely converging above.

Closely allied to C. persimilis, Cresson, but that species is easily known from it by

having the first joint of the flagellum not much longer than the second, the thorax

“polished and feebly punctured,” and without a tooth on either side of the

metathorax.

B. Black, marked with white. (Species 7-13.)

———— 7. Cryptus aztecus.

Cryptus azteeus, Cresson, Proc. Acad. Phil. 1878, p. 188. no. I (2) om

Hab. Mexico, Cordova, Orizaba 1! (Sumichrast).

8. Cryptus tantillus.

Cryptus tantillus, Cresson, Proc. Acad. Phil. 1873, p. 134. no. 2 (3)'.

Hab. Mexico, Cordova 1 (Sumichrast).

9. Cryptus tenuiventris.

Cryptus tenuiventris, Cresson, Proc. Acad. Phil. 1873, p. 184. no. 3 (¢)’.

Hab. Mexico, Orizaba ! (Sumichrast).

10. Cryptus celaya.

Cryptus celaya, Cresson, Proc. Acad. Phil. 1878, p. 185. no. 4 (¢)}.

Hab. Mexico, Mirador! (Dr. Sartorius).

11. Cryptus arcuatus.

Cryptus arcuatus, Cresson, Proc. Acad. Phil. 1873, p. 185. no. 5 (?)’.

Hab. Mexico, Orizaba! (Sumichrast).

12. Cryptus transversus.

Cryptus transversus, Cresson, Proc. Acad. Phil. 1878, p. 186. no. 6 (¢)*.

Hab. Mexico, Mirador! (Dr. Sartorius).

206 HYMENOPTERA.

13. Cryptus angulatus.

Cryptus angulatus, Cresson, Proc. Acad. Phil. 1873, p. 186. no. 7 (?)?.

Hab. Mexico, Cordova! (Sumichrast).

C. Thorax black and white, wings hyaline. (Species 14.)

14. Cryptus citus.

Cryptus citus, Cresson, Proc. Acad. Phil. 1878, p. 187. no. 8 ( ?)}.

Hab. Mexico, Orizaba! (Sumichrast).

D. Ferruginous, wings banded with fuscous, or fuscous banded with yellow.

(Species 15 to 22.)

15. Cryptus solabilis. (Tab. IX. fig. 15.)

Ferrugineus, nitidus ; antennis nigris, medio annulo flavo, basi rufa; alis hyalinis, apice fumatis, nervis nigris ;

apice tarsorum nigro. 9°.

Long. 10 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Antenne, if anything, longer than the body, bare, the third joint nearly one fourth

longer than the fourth ; apex thickened and compressed as in Joppa. Face flat, pallid ;

clypeus rounded at the apex, flat, a shallow fovea on either side at the base; teeth of

the mandibles black. If anything, the head is broader than the mesothorax. Meso-

notum finely punctured, the furrows obsolete. Scutellum shining, narrow, the apex

longitudinally striated (the striations large, and continued to the postscutellum); the

sides keeled, the keel sharp, and very large on the sides of the fovea at the base. Meta-

thorax rugose, with two nearly straight, transverse furrows ; tubercles acute, double as

long as broad, curved. Petiole longish, curved, the postpetiole shining ; the rest of

abdomen shining, impunctate, the apex acute, a little compressed, and covered with

longish yellow hair ; ovipositor short, not longer than the second segment, the sheath

pallid red.

16. Oryptus unifasciatus.

Ferrugineus ; tarsis posticis annuloque antennarum, flavis; alis hyalinis, medio fumato. 9.

Long. 9-10 millim.

Hab. Panama, Volcan de Chiriqui 3000 to 4000 feet (Champion).

Head, pro- and mesothorax, finely and closely punctured, opaque, covered with short,

glistening white pubescence; face projecting in the centre; apex of the clypeus shining,

scarcely transverse ; apices of the mandibles piceous-black. The antenne originate

from distinct tubercles; they are stout, and the third joint is longer than the fourth, .

CRYPTUS. 207

Mesonotal sutures almost obsolete. Scutellum carinated at the sides throughout:

Metanatum coarsely rugose; there are two transverse carinz, both curved upwards, in

the centre, the upper one joined to the base of the metanotum by two short keels, which

form a small triangular area; tubercles stout, double as long as broad. Petiole

shining, smooth, the postpetiole obsoletely punctured; the rest of the abdomen finely

and closely punctured, opaque. Ovipositor a little longer than the petiole. The hind

legs are much darker than the others, the ferruginous tinge being obscured with

fuscous. Areolet square; stigma blackish, reddish at extreme base. The base of the

wings is slightly obscured with fuscous.

17. Cryptus xanthostigma. (Tab. IX. fig. 14.)

Cryptus xanthostigma, Brullé, Hist. Nat. Ins. Hymén. iv. p. 190.

Hab. Mexico, Ciudad in Durango (Forrer); GuaTEMaLa, near the City, Cerro Zunil

(Champion). |

Dark ferruginous; the flagellum of the antenne (except joints 3-10, which are yel-

lowish-white), the fovea at the base of the scutellum, its keels, the apex of the meso-

notum, the base of the second and third abdominal segments, the ovipositor, and the

greater part of the four posterior legs, black. Wings fuscous, a broad yellow band in the

middle of both, and a smaller one (which does not go completely across, and is narrowed

posteriorly) at the apex of the stigma, which is yellow, black at the apex. Opaque,

finely and closely punctured, the metathorax more strongly than the rest of the body ;

covered with a close glistening pubescence, which is, if anything, stronger laterally.

Metanotum with blunt tubercles, not very clearly differentiated from the transverse keel,

which does not extend completely across, being interrupted in the middle. Abdomen

very finely and closely punctured, the punctuation almost hidden by the white, short

pubescence. Petiole shining, nearly impunctate. Ovipositor, if anything, longer than

the abdomen. The hind legs are black; the middle pair black, dark ferruginous in

front; the front pair ferruginous; the coxe and femora inclining to ferruginous behind.

Areolet 5-angled, the lateral nervures scarcely converging above, the outer ones bul-

lated ; below, the recurrent nervure is received a little beyond the middle.

The male has the antenne longer, and the joints 38-13 of the flagellum yellowish, with

a tinge of ferruginous, and closely pilose. The four anterior legs have less black,

the tarsi are lighter in tint, and the two basal joints of the hind pair are yellowish,

ferruginous at the extreme apex. The pubescence on the thorax is denser (especially

on the metathorax), and above it is darker ; the upper transverse keel on the metanotum

is more distinct (in the female it is semiobsolete) ; the first segment of the abdomen is

longer and more slender, and the postpetiole bears a few punctures.

The amount of black on the legs varies in both sexes, the black running iuto ferru-

ginous. I rather think the species I have described is not identical with C. zantho-

208 HYMENOPTERA.

stigma, but as there are several species, not very clearly differentiated, of similar

coloration, I prefer not to consider it distinct.

~~ 18. Oryptus calipterus.

Cryptus calipterus, Say, Bost. Journ. Nat. i. p. 234'; Complete Writings, 1. p. 690; Cresson,

Trans. Am. Ent. Soe. iv. p. 158”.

Hab. Norta America, Texas ?,— Mexico }.

19. Cryptus fulvus.

CPyptus fulvus, Taschenberg, Zeits. f. d. ges. Naturwiss. xlviii. p. 66 (1876)’.

Hab. Mexico}.

20. Cryptus hebetis. (Tab. IX. fig. 13.)

Ferrugineus, apice antennarum lete, apice metanoti abdominisque segmento 3° basi, nigris ; tarsis posticis flavis ;

alis flavo-hyalinis, fusco-bifasciatis. 9.

Long. 11 millim.

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Antenne as long as the thorax and abdomen together ; of nearly uniform thickness ;

the middle joints yellowish, the base ferruginous; the third joint as long as the fourth.

Head as broad as the mesothorax, finely rugose, opaque ; a blunt, large, semicircular

tubercle below the antenne; clypeus rounded at the apex, projecting, the oral region

and two irregular lines on the face blackish ; the depression above the antenne shining,

blackish. Thorax finely rugose; mesonotal furrows obsolete. Scutellum elevated

above the scutum, having a gradual slope to the apex; the sides hollowed. Metathorax

hollowed in the centre behind, with an oblique slope, with two large broad tubercles,

the carinee obsolete ; below the spiracles hollowed, the apex transversely and indistinctly.

striated; all the sutures broadly black. Abdomen finely and closely punctured,

opaque ; the basal half of the petiole black, shining, almost impunctate, the apical half

and the postpetiole finely punctured ; the apex broad compared to the base. The apices

of both wings are smoky, the hind pair faintly ; the apical fascia extends from the middle

of the stigma to a little beyond the areolet, the basal fascia to either side of the basal

nervure; areolet longer than broad, bluntly 5-angled, the lateral nervures converging

above. |

21. Cryptus fraternans.

Hab. Mexico, Northern Sonora (Morrison).

Identical in coloration with C. hebetis, except that the thoracic sutures are scarcely

black; differing otherwise in having the antenne a little shorter and stouter;

in the face below the antenne projecting more ; in the clypeus being surrounded behind

by a much more distinct furrow ; the head also bearing no black at all; in the scutellum

CRYPTUS.—JOPPIDIUM. 209

being broader and not so much hollowed at the sides; in the metanotum having two

distinct keels, both bending upwards in the middle; in the tubercles being very obtuse ;

in the abdomen being broader, the petiole without black ; in the areolet projecting much

more, and sharper on the lower side, the recurrent nervure, too, not being received in

the middle, as in C. hebetis; and the ovipositor a little longer, the sheaths in both

species being rufous. In C. fraternans the mesosternal furrow is semiobsolete; in

C. hebetis it is deep and conspicuous.

Allied to the Texan C. sororius, Cresson.

22. Cryptus guatemalensis.

Ferrugineus ; lineis mesonoti, apice tibiarum posticarum lete terebraque, nigris ; antennis longis, rufis, articulis

3°, 4° et apicibus lete, nigris; alis flavo-hyalinis fusco-bifasciatis, stigmate flavo, apice nigro. 9.

Long. 12 millim.

Hab. Guatemata, Duefias (Champion).

Antenne longer than the body, the base of the flagellum thin, the rest thicker. Head

broader than the thorax, finely and closely punctured, except the depression above the

antenne ; sparsely covered with a silvery pile; front broadly projecting below the

antenne, the projecting part separated by a depression from the clypeus, which also

projects; tips of the mandibles black. Thorax opaque, finely and closely punctured ;

the mesonotal furrows obsolete, except in front; two broad black lines in the centre,

and a shorter one at the side, black. Scutellum flattish, the sides not hollowed. Meta-

thorax with a gradual slope, the apex hollowed, and with two transverse keels in the

middle; without tubercles. Petiole rather broad ; the postpetiole punctured, the punc-

tures wide apart, the extreme apex shining and impunctate. Abdomen finely punctured,

the junction of the segments shining, impunctate; ovipositor as long as the hind tibie. |

Anterior tibiz and the hind tarsi obscure yellow. Areolet 5-angled, the lateral nervures.

converging towards the top, the bottom forming a moderately sharp angle ; the recur-

rent nervure received a little before the middle. The fascize on the wings are as in

C. fraternans and C. hebetis, but narrower, and scarcely so deep in tint.

Easily known from the two preceding species by the longer and thinner antenne,

which have the fourth and fifth joints black, and the middle not yellowish ; in the meso

notum being marked with black, the abdomen without a black band on the third

segment; in the punctured postpetiole, the black sheath of the ovipositor, &c. The

mesosternal suture is indistinct.

JOPPIDIUM.

Joppidium, Walsh, Trans. St. Louis Acad. Science, iii. p. 69. '

This genus, so far as at present known, is peculiar to America. The antenne in the

female are like those of Joppa, but those of the male differ; it also diverges from that

BIOL. CENTR.-AMER., Hymenopt., August 1885. 2. EE

210 . HYMENOPTERA.

genus in the ovipositor being long, the petiole longer and more slender, and in the

second segment of the abdomen having no gastrocceli.

1. Joppidium dubiosum.

Joppidium dubiosum, Cresson, Proc. Acad. Phil. 1878, p. 188 (¢ 2)’:

Hab. Mexico, Cordova! (Sumichrast).

_—_—.—_2. Joppidium ardens.

Joppidium ardens, Cresson, Proc. Acad. Phil. 1878, p. 188 (¢ 2)’.

Hab. Mexico, Cordova, Isthmus of Tehuantepec 1 (Sumichrast).

3. Joppidium ruficolle. (Tab. IX. fig. 16.)

Ferrugineus ; metathorace, coxis posterioribus, trochanteribus, femoribus tibiisque posticis, nigris ; pedibus

anterioribus fulvis, tarsis posticis (apice excepto) flavis; alis fuliginosis. ¢ 9.

Long. 15-16 millim. ; terebra 5 millim.

Hab. Mexico; Guatemaua, San Gerénimo, San Joaquin in Vera Paz (Champion).

Antenne scarcely so long as the abdomen and metathorax together ; stout, thickened

and compressed towards the apex; black, reddish at the base, a broad yellow ring a

little beyond the middle. Head narrower than the mesothorax, retreating behind the

eyes ; covered sparsely with white pubescence, especially laterally, the vertex impunc-

tate, the face with scattered punctures ; clypeus shining and also punctured ; tips of the

mandibles black. Mesonotum shining, obsoletely punctured, the furrows deep; the

pleure longitudinally and finely punctured. Scutellum shining, impunctate, covered

with longish fuscous hair, not much raised above the mesoscutum, the fovea at the base

not very deep. Metanotum above the upper transverse carina shining, punctured ; below

it strongly striated transversely; a broad deep furrow on either side; the second

transverse carina obsolete, the first nearly straight ; metapleure longitudinally striated.

Petiole long, curved, shining, impunctate; the rest of the abdomen microscopically

aciculate, covered with 4 microscopic down ; the greater part of the third and the fol-

lowing segments entirely reddish. Coxee and trochanters shining, impunctate, covered

with long blackish hair. Areolet 5-angled, broader than long, a distinct angle on the

lower side; the lateral nervures parallel.

The male has the antenne longer and entirely black, except a small yellow ring; the

thorax black from behind the base of the scutellum, and the abdomen entirely black ;

all the coxe are black, and the middle femora blackish at the basal half, while the

base only of the hind tarsi is yellow.

In most females the hind tibie are fulvous at the base.

. JOPPIDIUM. 91%

4, Joppidium ceruleipenne. (Tab. IX. fig. 17.)

Ferrugineus, nitidus, levis; femoribus, tibiis tarsisque posticis, nigris ; flagello antennarum nigro, annulo albo ;

3 abdomine (basi excepta) nigro. |

Long. 15-16 millim.

Hab. Panama (Boucard), David in Chiriqui (Champion).

Uniformly shining, impunctate, covered with a white pubescence. Antenne stout,

_ thickened and slightly compressed towards the apex. Stigmatic tubercles on the petiole

_ distinct ; a longish fovea on the top of the postpetiole.

5. Joppidium donabile.

Joppidium donabilis, Cresson, Proc. Acad. Phil. 1873, p. 189 (¢ ¢)'.

Hab. Mexico, Cordova! (Sumichrast), Valladolid in Yucatan (Gaumer).

6. Joppidium yucatanense. (Tab. IX. fig. 18.)

Ferrugineus ; apice antennarum nigro, medio sordide flavo; alis nigris. 9.

Long. 12 millim.; terebra fere 4 millim.

Hab. Mexico, Valladolid in Yucatan (Gaumer).

Antenne as long as the thorax and abdomen together ; stout, thickened towards the

apex, the third and fourth joints equal. Head a little broader than the mesothorax,

punctured and semiopaque, except above the antenne; front projecting in the middle,

a furrow on either side of it; clypeus projecting, a semitransverse furrow at its base ; a

distinct furrow runs down from the ocelli to the antenne, through the centre of the

depression. Mesonotum minutely punctured, the furrows distinct in front; the pleure

longitudinally striated (the striations large and curved). Scutellum shining, faintly

punctured. Metathorax strongly transversely punctured ; the base (behind the upper

transverse keel) aciculate and sparsely punctured ; the second transverse keel interrupted

in the middle; without tubercles. Petiole smooth, impunctate, and shining; the

postpetiole raised a little in the centre, a longish depression at the sides. The remain-

ing abdominal segments semiopaque, and finely and closely punctured; sheaths of the

ovipositor black. Legs longish, stout. Areolet longer than broad, the lower side some-

what acutely angled, the recurrent nervure received a little before the middle; stigma

black, obscure testaceous on the lower side.

7, Joppidium fuscipenne.

Cryptus fuscipennis, Brullé, Hist. Nat. Ins. Hymén. iv. p. 189. no. 5°.

Hab. Mexico!.

This species comes very near the preceding, but is probably distinct. The metathorax.

has “ four elevated oblique lines,” and is rugose on the back; the antenne appear to

2 EE 2

212 HYMENOPTERA.

be entirely black, except the yellow middle ring ; the second and third abdominal seg-

ments are marked on either side, at the base, with a large brown mark; the pleure

only finely striated.

PHYGADEUON.

Phygadeuon, Gravenhorst, Ichneum. Europ. ii. p. 635.

A genus widely distributed over the temperate regions of the globe, and no doubt

also in the warmer parts.

1 (2). Body and legs entirely rufous; stigma testaceous . . - - « semifumatus.

2 (8). Body and legs reddish ; apex of abdomen, and more or less of femora,

coxe, and trochanters, black ; stigma black, white at base . . . alpinus.

3 (6). Thorax black, marked with white; metathorax pale testaceous ; legs and

abdomen pale honey-yellow.

4, (5). Wings hyaline; face black. . 2. 2. 6 1 1 + 6 ee ew ee e+ SAbageUs.

5 (4). Wings smoky; face white. . .. . . . . . albicollis.

6 (7). Thorax entirely black ; antennze with a white annulus ; ; legs and abdomen

honey-yellow . . . . - ee . . zapotecus.

7 (6). Thorax, antenne, legs, and base of abdomen black, the remainder of

abdomen rufous . . . . 2... es 6 ee ee ee ee +) melanopoda,

1. Phygadeuon semifumatus.

Ferrugineus; antennis nigris, basi rufa, medio flavo; tegulis flavis, abdominis basi nigra; alis subfumatis,

stigmate fusco, basi pallida. <¢.

Long. fere 9 millim.

Hab. Mexico (Sallé).

Antenne thickish, densely pilose, as long as the body, the third and fourth joints

subequal. Head nearly as broad as the mesothorax, punctured, covered with silvery-

white pubescence; front projecting, the middle forming an indistinct roundish tubercle ;

clypeus at the base surrounded by a semicircular furrow, the apex bluntly rounded ; tips

of the mandibles black, the palpi yellow. ‘Thorax punctured; mesonotal sutures almost

obsolete. Scutellum shining, yellowish, broad at the base, flattish, almost impunctate.

Metathorax with a gradual slope, more shining than the mesonotum, covered (especially

on the sides) with longish pale hair, and scarcely punctured ; basal area distinct ; supra-

median area longer than broad ; tubercles blunt, short. Abdomen shining, impunctate,

covered (particularly on the sides) with pale pubescence. Areolet with a distinct pro-

jecting angle on the lower side; the lateral nervures converging.

2. Phygadeuon albicollis.

Rufus ; antennis, vertice, pronoto, mesonoto apiceque tarsorum posticorum, nigris; facie, orbitis, prosterno,

linea pronoti, tegulis maculaque mesopleurali, albis ; alis fumatis. @.

Long. 7 millim.

Hab. Panama, Bugaba (Champion).

PHYGADEUON. 213

Antenne thick, semi-involute, nearly as long as the thorax and abdomen together ; the

third joint a little longer than the fourth. Head thick, white, except the middle of the

vertex and the occiput ; clypeal fovee large; face covered with a longish white pubes-

cence. Thorax impunctate; metapleure obscurely striated; middle area on the meta-

notum broader than long, the other aree distinct; spiracular area obscurely trans-

versely striated. The prothorax is black, except the prosternum and a broad white line

on the pronotum ; the mesonotum is entirely black (unless the scutellum may be white,

a fact which I cannot make out, the large pin going through it); below the tegule the

mesopleure are, for the greater part, white; the suture of the metapleure is obscure

white; the metathoracic tubercles are large, semiacute. Abdomen shining, impunc-

tate. Legs stout; four anterior coxe and trochanters yellowish-white, the rest of the

legs reddish. Areolet 5-angled; outer nervure bullated.

3. Phygadeuon satageus.

Phygadeuon satageus, Cresson, Proc. Acad. Phil. 1873, p. 140 (9).

Hab. Mexico, Cordova! (Sumichrast).

4. Phygadeuon zapotecus.

Phygadeuon zapotecus, Cresson, Proc. Acad. Phil. 1873, p. 40 (3).

Hab. Mexico, Orizaba! (Sumichrast).

5. Phygadeuon alpinus.

Rufus ; apice antennarum abdominisque apice nigris, femoribus tibiisque posticis fuscis; flagello antennarum

medio flavo; alis hyalinis, stigmate nigro, basi alba. 2.

Long. 8 millim. .

Hab. Mexico, Ciudad in Durango 8100 feet (forrer).

Antenne stout, involute; the third joint not much longer than the fourth ; the others

becoming gradually shorter and a little thicker towards the apex. Head and thorax

finely punctured, opaque; the clypeus shining, impunctate ; mandibles black at the

apex. Mesonotum more shining than the pleure, and less strongly punctured ;

covered with pale pubescence. Metathorax longish, the apex with an oblique slope,

its centre hollowed and transversely striated ; the upper median area longer than broad,

its apex transverse and narrower than the central part; the base triangular ; without

tubercles. Postpetiole aciculate; the rest of the abdomen obscurely aciculated to the

apex, which is shining and covered with longish white pubescence, the apex itself

obliquely truncated ; the ovipositor a little longer than the abdomen. Areolet broader

than long; the outer nervure semiobsolete. Legs stout; the trochanters. hind coxe,

and femora more or less blackish.

(214 HYMENOPTERA.

6. Phygadeuon melanopoda. (Tab. X. fig. 22, 2 .)

Niger ; abdomine (petiolo excepto) rufo ; alis hyalinis, stigmate nigro. °.

Long. fere 7 millim.

Hab. Mexico, Northern Sonora (Morrison).

Head and thorax opaque, covered with pale pubescence, closely punctured, the thorax

more strongly punctured than the head. Antenne thick, involute ; third joint about

one fourth longer than the preceding, the others becoming gradually ‘shorter, the apical

joint being much broader than long. The mesonotum is more shining than the head

or pleure; the punctures are not so closely pressed together; the sutures obsolete,

except very slightly in front. Scutellum indistinctly keeled at the sides towards the base.

Ares on the metanotum distinct, the upper median area longer than broad, and rounded

at the sides; tubercles large, broad. Petiole black, shining, indistinctly punctured ;

the base of the postpetiole black, the centre raised, a furrow on either side of the raised

part; the rest of the abdomen shining, impunctate, broad, the apex obtuse ; ovipositor

about one half of the length of the abdomen. Areolet 5-angled, the lower side sharply

angled ; the lateral nervures converging at the top, the outer nervure faint.

MESOSTENUS.

Mesostenus, Gravenhorst, Ichneumon. Eur. i. p. 750.

A genus of world-wide distribution, and of great extent.

A. Body and legs black. (Species 1 to 3.) |

1. Mesostenus pompiliformis.

Niger; annulo antennarum albo; alis hyalinis, medio et apice fusco-fasciatis. 9.

Long. 13 millim. ; terebra 3 millim.

Hab. Guatemata, Sabo in Vera Paz (Champion).

Head and mesonotum opaque, very finely and closely punctured; sparsely covered

with white pubescence ; mesopleura shining and impunctate in the centre, the rest

longitudinally striated; metapleure very coarsely longitudinally striated ; mesonotum

before the scutellum longitudinally striated. Scutellum smooth, shining, impunctate ;

the sides carinated along their entire extent; strongly gibbous, longer than broad.

Metanotum coarsely rugose; there is a transverse carina which curves up into a half- .

circle in the middle; above it the punctuation is much weaker; spiracles large,

oval; below them the notum is transversely striated; tubercles thick, somewhat

oblique at the apex, and not much longer than broad. Petiole long, and, as well

as the postpetiole, smooth, shining, impunctate; the second segment is semiopaque,

the others opaque, covered with microscopic down, which is longer at the sides; the

apical segment brownish; cerci short, blunt. Legs stout, longish, the hind femora

MESOSTENUS. . 215

nearly as long as the abdomen ; tarsi shorter than the tibiee, covered, on the lower side,

with stiff, bristle-like hair, ending at the apex of the joints in a stiff spine, that on the

fourth joint being not much shorter than the claws; spurs longish, broad, acutely

pointed at the apex. Areolet broader than long, open at the apex. The antenne

are stout, nearly as long as the body, becoming thicker towards the apex; the

annulus is interrupted on the lower side.

This species is very closely allied to MW. migerrimus, Smith, but that species differs

in having a stouter thorax, longer antenne, in the clypeus being white at the apex, in

the much more gibbous scutellum, which is more abrupt behind, where it is almost per-

pendicular, and is also shorter compared to its breadth; the hind legs are very much

longer, they being (not counting the coxe) 22 millim. in length, while those of M. pom-

piliformis are barely 17 millim., the length of the bodies in the two species being nearly

the same. The central fascia in the fore wings in J. nigerrimus is larger, extends to

the stigma, and is triangular in shape; that of MW. pompiliformis not extending to the

stigma, and being angled in the middle and broad at the top. Moreover, in YZ. pompili-

formis there are two longish depressions below the antenne, which are scarcely indicated

in Smith’s species.

2. Mesostenus nigerrimus. (Tab. X. fig. 20.)

Mesostenus nigerrimus, F. Smith, Descr. of New Species of Hymen. p. 231".

Hab. Costa Rica, Caché ! (Rogers).

3. Mesostenus arctus.

Mesostenus arctus, Cresson, Proc. Acad. Phil. 1873, p. 162 (¢)'.

Hab. Mexico, Orizaba! (Sumichrast).

This species may be known from the two preceding by the wings being smoky only

at the tips.

B. Head, thorax, and abdomen not entirely black. (Species 4 to 49.)

a. Abdomen black, banded with white or yellow. (Species 4 to 35.)

1. Mesothorax entirely black. (Species 4 to 6.)

4. Mesostenus annulitarsis. (Tab. X. fig. 15.)

Niger, flavo-maculatus ; clypeo, orbitis, coxis, basi tibiarum annuloque tarsorum, flavis; petiolo flavo, medio

nigro. 9°.

Long. 11 millim. ; terebra 5°5 millim.

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Antenne longer than the body, thin, the annulus large. Head finely rugose, opaque ;

the orbits broadly all round, the palpi, the edge of the clypeus, and a large semicircular

mark above it, yellow. Thorax opaque, finely rugose, the pleure more shining; the

216 HYMENOPTERA.

sutures of the mesonotum not very distinct ; scutellum broader than long, smooth and

shining ; the tegule, prosternum, the edge of the pronotum in the middle, the pleural

tubercle, a large mark (broader than long) on the mesopleura, a much smaller mark

immediately beneath the hind wings, an oblique longish mark on the metapleure, the

scutellum (except at the apex), the carine in front of it, the metathoracic spines, and

the space immediately surrounding them, yellow. Upper transverse keel on the meta-

notum distinct, the sides of the metathorax rugose; above the transverse keel finely

punctured, below it obliquely striated, the striations (which are large) converging towards.

the centre ; tubercles blunt, a little longer than broad. Petiole and postpetiole smooth

and shining, impunctate ; yellow, beneath and a large mark in the centre black; the

postpetiole not clearly defined from the petiole, and becoming gradually thicker towards.

the apex. The rest of the abdomen semiopaque, finely punctured ; the second and third

segments narrowly banded with yellow at the apex, the band on the fourth interrupted

in the middle, the fifth and sixth yellow at the sides, the seventh entirely yellow, except a

black mark in the centre, and the eighth segment has a small black mark at the side; the

ventral surface is entirely yellow. The four anterior coxe and trochanters are yellow,

except a round black mark on the outer side of the former; the hind coxe are black,

broadly yellow at the base and apex; the anterior femora are yellow beneath in the

middle ; the anterior tibiz yellow, black at the base and apex; the middle and posterior

tibize broadly yellow at the base ; the anterior tarsi almost entirely black ; the apical half

_ of the basal joint of the middle tarsi is yellow; the posterior tarsi are yellow, broadly

black at the base (especially) and apex. The wings are slightly smoky at the apex;

areolet open at the apex, nearly square, angled where the recurrent nervure is

received.

5. Mesostenus vividus. (Tab. X. fig. 18.)

Niger, flavo-maculatus ; ore, facie orbitisque, flavis; pedibus flavis, femoribus nigro-lineatis, tibiis tarsisque,.

fulvis ; abdominis basi segmentoque 2° laterali, flavis ; alis hyalinis, stigmate nigro. 9.

Long. 11 millim. ; terebra 3°5 millim.

Hab. Guatemaua, Zapote (Champion).

Antenne longer than the body, stout, microscopically pilose. Head punctured

roughly on the top; yellow, except behind and the centre of the vertex; mandibles

edged with black. Thorax coarsely punctured ; the scutellum punctured, longer than

broad, the sides rather abrupt. Pronotum laterally, coarsely, longitudinally striated.

A broad line on the edge of the pronotum, the tegule, the scutellar carine, the scu-

tellum above, the postscutellum, the mesopleura almost entirely, a mark beneath the

hind wings, a large, somewhat triangular, mark on the metapleure, and a large mark

on either side covering the tubercles, yellow. Metathorax above the transverse keel

(which bends sharply up in the middle) smooth, shining, impunctate ; the rest coarsely

punctured; tubercles long, stout, straight. Petiole and postpetiole shining, impunc-

MESOSTENUS. 217

tate, yellow, the apex of the petiole black; the postpetiole black, its apex fulvous.

Gastrocceli transverse, fulvous. The abdomen is shining, impunctate; black, a large

yellowish (inclining to fulvous) mark on either side of the second segment at the apex;

the apical segments obscure fulvous. The four anterior legs are entirely yellow, except

the line over the femora and the apices of the tarsi, which are black, the tibie and tarsi

being, however, fulvous on the upper side; the hind legs are fulvous, except the cox

behind, which are yellow, and the femora, which are black beneath and at the sides.

Areolet minute, open in the middle at the apex, which is wider than the base. The

lateral margin of the pronotum projects, especially in front, so that the prothorax

is nearly transverse.

6. Mesostenus admonitus.

Mesostenus admonitus, Cresson, Proc. Acad. Phil. 1873, p. 160 (¢)°.

Hab. Mxxico, Orizaba 1 (Sumichrast).

It is quite possible that further observations may show that this is the male of

M. vividus, but the mesopleure appear not to be largely yellow (Cresson says that the

space ‘“‘ behind the base of the wings and a spot on each flank of the metathorax are

yellow”), the hind coxe are apparently black, marked with yellow, the apical margins

of all the segments are yellow, and the posterior face of the metanotum is coarsely

reticulated.

2. Mesothorax with one yellow mark in the centre. (Species 7 to 29.)

i. Metathorax with lateral spines. (Species 7 to 24.)

7. Mesostenus intrudens. (Tab. X. fig. 16.)

Mesostenus intrudens, F. Smith, Descr. of New Species of Hymen. p. 282°.

Hab. Costa Rica, Irazu and Cachet (Rogers).

Black ; the orbits all round, the face (except at the sides of the clypeus and a some-

what triangular mark going up from them), the clypeus, the apex of the labrum, the

extreme base of the mandibles, the palpi, a line on the pronotum, the tegule, a line on

the prosternum, the pleural tubercles, an oblique mark in the centre of the mesopleura,

a somewhat oval mark on the metapleura, a mark under the hind wings, a mark at the

apex of the middle lobe of the mesonotum, the scutellum, the postscutellum, the

tubercles of the metanotum, and the apices of the abdominal segments, yellowish-white.

Legs yellowish ; the four anterior femora for the greater part, and the hinder femora

entirely, black ; hind coxe black in front and largely so behind, the apices of the tarsi

black. Vertex aciculated; mesonotum punctured, irregularly striated, transversely in

front, more strongly and longitudinally behind; metanotum irregularly reticulated and

striated ; centre of the meso- and metapleure impunctate, shining, the rest striated, the ~

BIOL. CENTR.-AMER., Hymenopt., November 1885. 2 FF

~~.

¥ (AR

218 HYMENOPTERA.

metapleure more strongly; upper keel on the metanotum turned backwards in the

middle ; spines conical, thick, obtuse. Areolet as long as broad, almost entirely open

at the apex, the recurrent nervure received in the centre.

8. Mesostenus aztecus.

Mesostenus aztecus, Cresson, Proc. Acad. Phil. 1873, p. 152 (¢)’.

Hab. Mexico, Cordova! (Sumichrast).

— 9. Mesostenus propinquus.

Mesostenus propinquus, Cresson, Proc. Acad. Phil. 1873, p. 152 (3 2)’.

Hab. Mexico, Cordova! (Sumichrast).

10. Mesostenus compactus.

Mesostenus compactus, Cresson, Proc. Acad. Phil. 1873, p. 153 (¢)'.

Hab. Mexico, Orizaba ! (Sumichrast).

11. Mesostenus discus.

Mesostenus discus, Cresson, Proc. Acad. Phil. 1878, p. 153 ( 2 )’.

Hab. Mexico, Orizaba 1 (Sumichrast).

12. Mesostenus facilis.

Mesostenus facilis, Cresson, Proc. Acad. Phil. 1873, p. 153 (?)'.

Hab. Mexico, Orizaba! (Sumichrast).

13. Mesostenus chiriquensis,

Niger, flavo-varius ; pleuris sternoque flavis ; pedibus flavis, supra nigro-lineatis. 9.

Long. 14 millim.; terebra 2 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

Antenne stout, longer than the body, the yellow ring on the flagellum broad.

Head punctured; yellow, except behind, the centre of the vertex, and the apex

of the mandibles, which are black; vertex opaque, more roughly punctured than the

rest ; a stout carina runs down from the ocelli. Pro- and mesothorax punctured, the

pleuree longitudinally striated. Metanotum above the transverse keel closely punctured ;

a little way below it longitudinally striated, the striations converging towards the

centre; the apical part transversely, the pleure longitudinally, striated. The -pleure

and breast are entirely yellow ; the prothorax, except the prosternum and a small yellow

mark on the edge, black ; the mesonotum black, except a somewhat squarish mark on

the disc; scutellum and postscutellum black; the scutellar carine are black. The

metathorax is yellow, except a broad black band extending from the base to a little

beyond the transverse carine, and prolonged as a black line down the centre and

® MESOSTENUS. 219

halfway laterally round the outer side of the tubercles, which are longish, stout, and

curved. Abdomen slender, yellow, above black (except at the base); the apex of the

postpetiole yellow; the rest of the abdomen black, yellow at the apices of the seg-

ments and beneath. Legs yellow; the trochanters, femora, and four anterior tarsi black

above; the hind tarsi yellow, black at the base and apex; spurs black; coxe yellow,

except two small black marks on the anterior, two larger ones on the middle, and two

longish black stripes on the posterior pairs. Areolet square, stigma testaceous on the

lower side.

14. Mesostenus lamentarius. (Tab. X. fig. 14.)

Niger, flavo-varius, apice scutelli flavo; petiolo flavo, medio nigro; coxis posticis flavis, nigro bilineatis. 9.

Long. 15 millim.; terebra 6 millim. ,

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Antenne moderately stout, as long as the body, five of the middle joints of the

flagellum yellow. Head yellow, except behind, the vertex in the centre, and the man-

dibles, which are black; punctured, shining ; a furrow runs down from the ocelli to the

antennal depression. Pro- and mesothorax closely and rather strongly punctured, the

pleure longitudinally striated; a smooth, shining, impunctate space in the centre of the

mesopleura. The prosternum, a large mark on the edge of the pronotum, the tegulz

and the tubercle under them, a large oblique mark on the mesopleura, the mesosternum,

a large mark under the hind wings, a mark (longer than broad and rounded at the base)

on the apex of the middle lobe of the mesonotum, the scutellar carine, the apical half

of the scutellum and postscutellum, yellow. Scutellum shining, longer than broad,

covered with scattered punctures. Base of the metanotum coarsely punctured, the apex

transversely, the pleure longitudinally, striated; on either side of the metanotum is a

longish mark, covering the tubercles, and extending above them to the transverse

carina as a triangular prolongation; on the pleura is a large oblique yellow mark ;

tubercles longish, curved. Petiole rather broad, furrowed in the centre above, the

furrow extending to the apex of the postpetiole ; the apex of the petiole and the base

of the postpetiole are broadly black, the black incised at either end. The rest of the

abdomen is aciculated; the gastrocceli, and the segments at the apex, yellow. Legs

yellow, the tibize and tarsi inclining to fulvous, the trochanters and femora, broadly lined

with black above ; the hind cox black behind, and with a longish yellow mark in the

centre of the black; the extreme base of the hind tibie and the apices of the

tarsi black. Areolet narrow, longer than broad; the apex of the wings slightly

smoky.

15. Mesostenus brachygaster.

Very similar in coloration to M. lamentarius, except that the mandibles are yellow

at the base; the mark on the disc of the mesonotum is longer than broad, not broader

2 FF 2

220 HYMENOPTERA. e

than long, and semilunate; the scutellum has its sides yellow throughout, and has a

black mark in the centre at the base; the top of the yellow marks on the metanotum

is tongue-shaped, not triangular; the sides of the petiole are black, and there isa large

black mark on the outer, and a smaller and broader one on the inner, side of the hind

coxe, the two being quite distinct. Structurally it differs in having the antenne

longer, the petiole broader, the tubercle at the side of the postpetiole much more distinct,

and the abdomen shorter and much broader, the latter being (not counting the petiole)

of the length of the head and thorax together, while that of Mf. /amentarius is consi-

derably longer than that. The sculpture is nearly the same in both species.

16. Mesostenus acceptus.

Mesostenus acceptus, Cresson, Proc. Acad. Phil. 1873, p. 154 (2 }’.

Hab. Mexico, Orizaba! (Sumichrast).

17. Mesostenus verzpacis.

Hab. Guaremaa, Panzos in Vera Paz (Champion).

Similar in size and coloration to WZ. lamentarius, except that the mesosternum is

black, the mandibles yellow at the base, and the yellow marks on the metanotum are

tongue-shaped, not triangular, above the tubercles; differing otherwise from that species

in the base of the metanotum not being so strongly punctured, the petiole not furrowed

in the centre, the abdomen broader, the ovipositor a little shorter, the hind cox with

only one large black mark on the outer side (not two joined at the apex), and the meta-

thoracic tubercles shorter, thicker, and not curved.

18. Mesostenus fraternans.

Niger, flavo-maculatus ; facie, orbitis coxisque anterioribus, flavis ; pedibus fulvis. 9.

Long. 17-18 millim. ; terebra 9:5 millim.

Hab. Mexico, Presidio (forrer).

Antenne stout, about as long as the body; the scape in the middle beneath, and a

broad ring on the flagellum, yellow. Head punctured, the face projecting in the middle;

mandibles black. Pro- and mesothorax punctured, the sides longitudinally striated ;

middle lobe of the mesonotum clearly defined by the furrows ; scutellum longer than

broad, punctured. The metanotum is shining, and punctured above the transverse keel,

below it coarsely, transversely striated; the pleure are coarsely and longitudinally

striated ; the tubercles broad, hollowed on the outer side, punctured. The prosternum,

a broad line on the edge of the pronotum, the tegulz, the tubercles beneath them, the

greater part of the mesopleure, a large mark under the hind wings, a large oblique

mark on the metapleure, a mark at the apex of the middle lobe of the mesonotum, the

scutellar carine, the scutellum, the postscutellum, and two longish marks on either side

MESOSTENUS. 221

of the apex of the metanotum, covering the similarly-coloured spines, yellow. Petiole

and postpetiole shining, impunctate, the apex of the latter broadly yellow. The re-

mainder of the abdomen aciculate, each segment banded with yellow at the apex. Sheath

of the ovipositor stout, broad. Areolet small, narrow, nearly double as long as wide.

19. Mesostenus montezuma.

Long. 19 millim.

Hab. Mexico, Orizaba (Bilimek).

A. species identical, in the coloration of the head, thorax, and abdomen, with JL. fra-

ternans, but of a stouter build, the thorax especially being broader ; differing otherwise

from that species in the legs being yellow (not fulvous), except the hind femora; in the

four anterior femora being lined behind with black, and the posterior femora above and

halfway down the sides black ; in all the coxz being black at the base, and the hinder

pair bearing a broad black stripe down the centre on the outside, and a large, broader,

and shorter mark on the inner side; the trochanters being also marked with black,

especially at the base; and the apices of all the tarsi black.

20. Mesostenus modicus.

Mesostenus modicus, Cresson, Proc. Acad. Phil. 1873, p. 154 (9)*.

Hab. Mexico, Cordova 1 (Sumichrast).

—<———21. Mesostenus communis.

Mesostenus communis, Cresson, Proc. Acad. Phil. 1873, p. 154 (g 2)’.

Hab. Mexico, Cordova, Orizaba 1 (Sumichrast), Mirador! (Dr. Sartorius).

/ e

22; Mesostenus ornatifrons. (Tab. X. fig. 17.)

Niger, capite flavo-maculatus; linea pronoti, scutello, segmentisque abdominis apice, flavis; pleuris, metatho-

race pedibusque, fulvis; alis hyalinis. 9.

Long. 13 millim.; terebra 4-5 millim.

Hab. Mexico (Sallé) ; Costa Rica, Irazu (Rogers) *

Antenne, if anything, longer than the body, thickened towards the apex ; the yellow

ring on the flagellum broad. Head punctured, the orbits, a triangular mark below the

antenne, the labrum, and a larger mark on the clypeus, yellow. ‘The antenne originate

from distinct tubercles, which are yellow. Thorax punctured, semiopaque above ; the

sides obscurely striated. The tegule and the tubercle below them, the collar in front,

a line on the edge, the anterior part of the mesopleure, the: scutellum, and the post-

scutellum, yellow. , Scutellum longer than broad, narrowed towards the apex. The.

metanotum is blac ‘behing the transverse keel ; in“ front of it and the pleura: fulvous,

as are also the sides of the mesothorax. The metanotuy behind-the carina is opaque,

tel el a

222 ; HYMENOPTERA.

Cem,

Lf toe

finely punctured ; the-pait in front of it rugose; the apex and sides strongly striated

and punctured; tubercles large, flat, transverse, hollowed in front; the lower transverse

keel produced as a triangle in the centre. Petiole longish, not clearly defined from

the postpetiole ; black, a longish yellow line down its centre; the apex of the postpetiole

and of all the other segments yellow, as are also the sides and ventral surface; the

petiole is shining and impunctate, the other segments opaque, finely aciculate. Legs

longish, the tarsi inclining to yellow. Areolet square, open at the apex, the recurrent

nervure received in the middle.

M. communis agrees very closely in coloration with the present species, but differs in

having a “furcate mark on the disc of the mesothorax,” and the trochanters black at

the base; there isno mark below the antenne, and only one oblique mark on the pleura,

and the petiole is entirely black. |

What I take to be the male of I. ornatifrons (from Irazu) has the face entirely white,

the apex of the hind tibie black, and the tarsi white, but otherwise coloured like the

female. The mark on the mesonotum is a little longer than broad, with the sides

rounded. The male of M. communis differs from this in having no tubercles on the

metathorax, while in the Costa-Rican specimen they are nearly as distinct as in the

female. It is quite possible that the latter may have a white mark on the mesonotum,

it being perhaps hidden by the pin.

23. Mesostenus striatifrons.

Niger, flavo-pictus ; macula mesonoti, scutello, postscutello, sterno, maculis pleuralibus, maculis 2 metanoti abdo-

minisque segmentis basalibus, flavo-testaceis ; pedibus flavo-fulvis, coxis, trochanteribus et femoribus

posticis, nigro-lineatis ; alis flavo-hyalinis, stigmate nigro. @.

Long. 14 millim. ; terebra 6 millim.

Hab. Britis Honpuras (Blancaneauz).

Antenne stout, black, joints 8-15 clear white; nearly as long as the body, covered

with microscopic pile. Head black; the orbits (except narrowly behind), the face,

labrum, clypeus, and the base of the mandibles, yellowish-testaceous. Vertex longi-

tudinally striated, the hollow above the antenne shining, impunctate; face punctured,

covered with white hair. Thorax strongly punctured, pleure (except a shining, im-

punctate space in the centre of the mesopleura) longitudinally striated ; scutellum

but very slightly punctured ; the base of the metanotum strongly punctured and reticu-

lated, the remainder transversely punctured. The prosternum, a line on the pronotum,

the apex of the middle lobe of the mesonotum, the scutellum (except at the extreme

base), the scutellar keels, the sutures, the sternum, a large oblique mark on the meso-

pleura (united posteriorly to the yellow breast), a triangular mark under the hind wings,

a large mark on the metapleura, two elongated marks on the metanotum covering the

spines and converging at the top, and the tegule and tubercles beneath them, yellowish-

testaceous. Upper transverse keel on the metanotum distinct, bent upwards in the

MESOSTENUS. 223

middle, where there is a clearly defined area, which is longer than broad; lower keel

absent ; spines stout, obtuse. The apex of the metanotum has a somewhat abrupt slope,

and is hollowed in the centre. Abdomen for the greater part yellowish-testaceous, the

underside and the sides of the petiole, a large transverse mark at the base of the post-

petiole, the greater part of the second segment, and of the other segments at the base (the

apical one narrowly), black. Petiole rather broad, the postpetiole clearly defined from

_ it, depressed in the centre at the base, the sides margined and projecting above over a

somewhat oblique hollow; the sides of the petiole bearing semioblique, thick keels ;

the second and following segments finely and closely punctured. Legs stout, the hind

coxe strongly punctured ; four anterior coxe black at the base, the hind pair with a broad

black band down the centre on the outside, and a short one on the inner side at the

apex ; all the trochanters and femora lined above with black ; tarsi black at the tips,

covered on the lower side with stout bristle-like hair. Areolet narrow, longer than

broad; the outer nervure bullated, nearly interstitial.

24. Mesostenus corpulentus.

Hab. Mexico, Orizaba (Bilimeh).

Very similar in coloration and punctuation to the preceding species, but larger

(17 millim. ; terebra 5 millim.). The head is black, there being only a short line united to

the oblique mark on the mesopleura along the hinder part of the mesosternal suture ; the

two marks on the metanotum are shorter and broader, and do not converge above; the

spines on the metathorax are short, blunt, and not brought to a point at the apex, being

triangular, looked at from the side. The punctuation on the metathorax is stronger,

and runs more into reticulations at the sides and base. The femora are not clearly

lined with black above, and the hind coxe have a fuscous-black mark at the base,

not a black broad band down the centre. Wings hyaline, nervures testaceous, and the

areolet is wider.

ii. Metathorax without spines. (Species 25 to 29.)

25. Mesostenus nigrispina.

Niger; annulo antennarum, ore, facie, orbitis, prosterno, linea pronoti, macula mesonoti, scutello, abdominis

segmentis apice tarsisque posticis, albis; pleuris, sterno, maculis 2 metanoti pedibusque, fulvis ; alis hya-

linis, nervis nigris. 9.

Long. 11 millim. ; terebra 4 millim.

Hab. Mexico, Valladolid in Yucatan (Gawmer).

Antenne as long as the body, slightly thickened towards the apex. Head rather

narrow, impunctate ; tips of the mandibles black. Thorax shining, impunctate, pleure

obscurely and very finely striated. Metanotum beyond the upper transverse keel trans-

versely striated ; the transverse keel is straight, and there are no tubercles or spines.

224 HYMENOPTERA.

Metathorax with a gradual slope from the base to the apex; the base is black, except

at the edge of the pleure, and the black is continued down the centre as a black band,

which becomes narrower towards the apex. Abdomen shining, impunctate; all the

segments broadly white at the apex, the ventral surface being also white. Legs longish,

slender; the apices of the hind femora, tibiz, and tarsi, black; the base of the tarsi

and the spines being also black. The mark on the mesonotum is large and broad, the

sutures are distinct, and the notum on either side of the black postscutellum is coloured

like the pleure.

26. Mesostenus chichimecus.

Mesostenus chichimecus, Cresson, Proc. Acad. Phil. 1878, p. 155 (?)*.

Hab. MExico, Orizaba, Cordova ! (Sumichrast).

27. Mesostenus admirandus.

Mesostenus admirandus, Cresson, Proc. Acad. Phil. 1873, p. 155 (2)?

Hab. Mexico, Orizaba ! (Sumichrast).

28. Mesostenus arcuatus.

Mesostenus arcuatus, Cresson, Proc. Acad. Phil. 1873, p. 156 (?)?.

Hab. Mexico, Orizaba 1 (Sumichrast).

29. Mesostenus admotus.

Mesostenus admotus, Cresson, Proc. Acad. Phil. 1878, p. 156 (2?) 1.

Hab. Mexico, Orizaba 1 (Sumichrast).

3. Mesothorax with two yellow lines on the disc. (Species 30 to 32.)

30. Mesostenus megapoda. (Tab. X. fig. 19.)

Niger, flavo-varius ; femoribus supra apiceque tibiarum posticarum, nigris ; alis hyalinis, apice fumatis. 9.

Long. 14 millim.; terebra 4 millim.

Hab. Guaremaua, El Tumbador (Champion).

Antenne stout, not much longer than the body. Head punctured, the face more

strongly transversely striated in the centre, the centre of the vertex aciculate ; front

projecting, with two black lines running down the centre to the mandibles round the

sides of the clypeus; the latter is blackish round the edge ; mandibles black, yellow at the

base. Mesonotum aciculated, with some scattered punctures ; the pleure striated in the

middle; base of the metanotum scarcely punctured, the rest strongly striated, reticu-

lated below the spiracles. Tubercles longish, a mere dilatation of the carina. Scutellum

not much longer than broad, finely punctured, rounded at the apex. The head is

yellow, except the centre of the vertex and behind; the prosternum, the tegule, and

MESOSTENUS. 225

the tubercle below them, the greater part of the mesopleura, a mark below the hind

wings, the greater part of the metapleura (forming a large oval mark), a broad line on

the edge of the pronotum, two longish marks on the mesonotum, the scutellum, a some-

what lunate mark on either side of the metanotum, and a longish mark between them,

and two longish somewhat oval marks on the apex of the metanotum, yellow. First

abdominal segment black, the apex yellow; second with the apex broadly yellow ; third

yellow, with two oblique marks and the base and the apex, black; fourth black, the

apex yellow; the rest yellow, as is also the ventral surface. Legs yellow; the base

and apex of the four posterior trochanters, a mark on the lower side of the hind coxe

at the base, and a larger and longer mark on the outer side, the femora above, and the

apices of the hind tibize broadly, black. Areolet longish, widest at the base, angled

where the recurrent nervure is received, the apical nervure faint,

31. Mesostenus costaricensis. (Mesostenus nicaraguensis, Tab. X. fig. 18.)

Niger, flavo-varius; apice scutelli, pleuris sternoque flavis; pedibus flavis, femoribus supra nigris; alis

hyalinis. 9.

Long. 13 millim.; terebra 5 millim.

Hab. Cosra Rica, Irazu 6000 to 7000 feet (Rogers).

Antenne stout, longer than the body, the yellow ring on the flagellum not very broad.

Head yellow, except behind; the centre of the vertex and the mandibles punctured.

Thorax strongly punctured; the tegule, the tubercle beneath them, the edge of the

pronotum, the mesopleura (except the suture and immediately beneath the wings), two

lines on the mesonotum, the scutellar carine, the apical half of the scutellum, the post-

scutellum, two large marks on the apex of the metanotum (covering and extending above

the spines), and the greater part of the metapleura, yellow. Scutellum impunctate.

Base of the metanotum almost impunctate, the apex transversely, the sides longitudinally,

striated; spines stout, curved. First abdominal segment yellow, a large black band at

the apex of the petiole; second and third segments black, yellow at the apex; fourth

segment yellow, black at the base; the other segments yellow. The anterior coxe

have a small black mark at the side, and the hind coxe have a large black line; the

trochanters in part, and the femora above, black. Areolet narrow, longer than broad.

32. Mesostenus longipes.

Niger, flavo-varius; pleuris, sterno scutelloque, flavis ; pedibus flavis, anterioribus femoribus tibiisque posticis

supra, nigro-lineatis.

Long. 13 millim.

Hab. Costa Rica, Cache (Rogers).

Antenne stout, the yellow ring on the flagellum interrupted on the lower side.

Head punctured, yellow behind, the middle of the vertex and the mandibles black.

Thorax coarsely punctured, reticulated in the centre of the mesonotum and pleure ;

BIOL. CENTR.-AMER., Hymenopt., November 1885. 9 aa

226 HYMENOPTERA.

scutellum semireticulated, the centre of the metanotum reticulated, the pleure

less distinctly; the sides of the mesonotum at the base finely reticulated. The

pleure are yellow, except the sutures broadly, and a broad line along the fore

part of the sternal furrow; the edge of the pronotum has a broad yellow mark;

the tegule, the tubercles beneath them, two elongated lines on the mesonotum, the

scutellum, the postscutellum, and two large marks on the metanotum, covering and

extending above the tubercles, yellow. Scutellum longer than broad, contracted from

the middle to the apex, the anterior part carinate. Metathoracic spines short, thick,

blunt. Petiole black, yellow along the sides, the apex of the postpetiole broadly yellow.

The second and third segments of the abdomen black, yellow at the apex; the other

segments yellow. Legs longish, the hind pair much longer than the body; the four

anterior trochanters and the femora and tarsi lined with black above; posterior coxz

with a broad black line; the trochanters, femora, and tibie to near the apex lined with

black above; the apex of the hind tarsi black. Areolet small, open at the apex.

A shorter and much broader and stouter insect than J. costaricensis, and easily

known from it by the reticulated thorax, the wholly yellow scutellum, the black scu-

tellar carinee, the much shorter and thicker metathoracic spines, the black-lined tibie,

and the much longer hind legs.

4, Mesothorax with a white line on each lateral lobe and a white mark on each

side of the middle lobe. (Species 33 and 34.)

33. Mesostenus euryaspis.

Niger; facie, orbitis late, pleuris, maculis mesonoti, metanoto (medio excepto), abdominisque segmentis apice,

flavis ; pedibus fulvis ; coxis flavis, posticis nigro-bilineatis ; alis hyalinis.

Long. 14 millim.; terebra fere 4 millim.

Hab. Mexico, Presidio (Forrer).

Antenne longer than the body, the scape beneath and a broad ring on the flagellum

yellow. Head punctured, the apex of the mandibles, the vertex in the middle, and the

posterior part (except the orbits) black, the rest yellow. Thorax punctured, the punc-

tures running into striations on the sides ; the basal part of the metanotum semirugose,

the middle longitudinally rugose-striate, the apex transversely so; metapleura rugose.

The pleure are yellowish, except the sutures, a longitudinal line on the mesopleure,

and the edge of the collar in front ; mesonotum black, the edges of the middle lobe and

two shorter lines at its base inside from these, the carine in front of the scutellum, the

scutellum, the postscutellum, and the metanotum (except the space enclosed by the

two transverse keels), yellow. Scutellum punctured, quadrate, almost broader than long.

Metathoracic tubercles broad, short. First abdominal segment yellow, a black mark

towards the apex; second segment black, with a fulvous transverse mark at its base, its

apex and also those of the other segments, the sides and ventral surface, yellow. The

MESOSTENUS. oT 227

mesosternal suture broad, deep. Legs longish; the hind tarsi broadly in the middle,

and the fore legs in front, yellow; there is a small black mark on the anterior coxe,

a larger one on the middle cox, and two large black lines on the hind coxe. Areolet,

if anything, broader than long; the apical nervure distinct; the recurrent nervure

received in the middle. The apex of the wings slightly smoky.

A narrowish insect.

34. Mesostenus stupidus.

Mesostenus stupidus, Cresson, Proc. Acad. Phil. 1873, p. 159 (?)°.

Hab. Mexico, Orizaba ! (Sumichrast).

5. Mesothorax with a central yellow stripe. (Species 35.)

35. Mesostenus abactus.

Mesostenus abactus, Cresson, Proc. Acad. Phil. 1873, p. 160 (¢)"*.

Hab. Mexico, Mirador ! (Dr. Sartorius).

b. Abdomen wholly or for the greater part reddish. (Species 36 to 45.)

36. Mesostenus mexicanus.

Mesostenus mexicanus, Cresson, Proc. Acad. Phil. 1873, p. 157 (g 2)’.

Hab. Mexico, Orizaba, Cordova! (Sumichrast).

37. Mesostenus lassatus.

Mesostenus lassatus, Cresson, Proc. Acad. Phil. 1878, p. 157 (¢)’°-

Hab. Mexico, Orizaba 1 (Sumichrast).

38. Mesostenus moratus. |

Mesostenus moratus, Cresson, Proc. Acad. Phil. 1873, p.. 158 (¢ 9)".

Hab. Mexico, Orizaba, Cordova ! (Sumichrast).

39. Mesostenus absolutus.

Mesostenus absolutus, Cresson, Proc. Acad. Phil. 1873, p. 158 (¢ 9)’.

Hab. Mexico, Cordova 1 (Sumichrast).

40. Mesostenus novatus.

Mesostenus novatus, Cresson, Proc. Acad. Phil. 1873, p. 159 (¢)"*.

Hab. Mexico, Mirador! (Dr. Sartorius).

2aq@ 2

228 HYMENOPTERA.

—————— 41. Mesostenus incertus.

Mesostenus incertus, Cresson, Proc. Acad. Phil. 1873, p. 161 (¢ 2)’.

Hab. Mxxico, Orizaba, Cordova! (Sumichrast).

42 Mesostenus parvituberculatis. (Tab. X. fig. 21.)

Niger, flavo-varius; abdomine rufo; pedibus flavo-fulvis; coxis anterioribus flavis; femoribus supra nigro-

lineatis ; alis hyalinis. @.

Long. 13 millim.; terebra 5°5 millim.

Hab. Guatemata, San Juan in Vera Paz (Champion).

Antenne stout, dilated a little towards the apex; the yellow ring on the flagellum

broad. Head punctured, the vertex not so strongly; a straight keel leading down from

the ocelli to the antenne; yellow behind, the centre of the vertex and the mandibles

black. Thorax strongly punctured, the mesopleura shining and impunctate, the meta-

pleura longitudinally striated, the metanotum irregularly reticulated. Scutellum oval,

with some large punctures. Metathoracic tubercles mere short dilatations of the carina.

Thorax black ; a mark on the side of the prothorax, a line on its edge, the tegule, the

tubercle beneath them, a large mark on the mesopleura, a small one beneath the hind

wings, the greater part of the metapleura, two lines on the disc of the mesonotum, the

scutellum, and two large marks covering the metathoracic tubercles, yellow. The

femora incline to reddish, the four anterior ones yellowish in front; tibie and tarsi

fulvous, tinged with yellow; the four anterior femora are lined with black behind, the

posterior femora have more than the apical half for the greater part black; the hind

coxe are marked with black at the base.

43. Mesostenus animatus.

Mesostenus animatus, Cresson, Proc. Acad. Phil. 1878, p. 161 (?)'.

Hab. Mexico, Orizaba 1 (Sumichrast).

44, Mesostenus pertenuis.

Mesostenus pertenuis, Cresson, Proc. Acad. Phil. 1873, p. 162 (¢)'.

Hab. Mexico, Cordova1 (Sumichrast).

45. Mesostenus collaris.

Mesostenus collaris, Cresson, Proc. Acad. Phil. 1873, p. 162 (¢)’.

Hab. Mexico, Orizaba+ (Sumichrast),

POLYCYRTUS. 229

POLYCYRTUS.

Polycyrtus, Spinola, Ann. Soc. Ent. Fr. x. p. 154.

This generic group has the general form of the body and neuration of Mesostenus ;

but it differs from the typical forms of Mesostenus in having a more or less well-deve-

loped spine on the front, and in having the mesonotum divided into three well-developed

lobes. Some authors regard Polycyrtus as a mere section of Mesostenus ; but in view

of the great extent of that genus, I prefer, if only as a matter of convenience, to keep

it distinct from it.

So far as I know, Polycyrtus is less numerously represented in South and Central

America than Mesostenus proper. In both groups there is considerable variation in the

form of the body, but as a rule the species of Polycyrtus are more slenderly built. The

form of the areolet varies, but is generally very small; often it is open at the outer

side. There is great variation in the size of the metathoracic spines; sometimes they

are completely obsolete, and this may also be the case with the transverse keels,

A. Body black and yellow. (Species 1 to 24.)

The Central American species of this section known to me may be recognized by the

following table :—

1 (2). Metathorax coarsely punctured . . . . . . . . . . . « chontalensis.

2 (1). Metathorax impunctate or nearly so.

3 (8). Hind tibiz entirely black behind.

4 (7). Central black line on the metanotum broadly dilated at the trans-

verse keel ; metatarsus not entirely yellow.

5 (6). Metapleure coarsely punctured, the black transverse line on the

metanotum joined to the spiracles; apex of the wings smoky ;

body stout . . 2... soe ee ee woe . collinus.

6 (5). Metapleure scarcely punctured, the black transverse line on the

metanotum not joined to the spiracles; apex of the wings clear

hyaline ; body slender. . . . . . confirmatus.

7 (4). Central black line on the metanotum not dilated at the transverse

keel; the black on the second abdominal segment not indented

in the middle; metatarsus yellow. . . . nigritibialis.

8 (11). Tibize broadly black at the base ; metanotum 1 not "broadly black,

and without a transverse yellow mark through the black.

9 (10). A large yellow mark produced on either side at the apex on the base

of the second abdominal segment; no furrow down the centre of

the black longitudinal line on the metanotum; spines on the

metathorax shortish, thick; wings hyaline. . . blanditus.

10 (9). A small yellow mark, wider than long, at the base of the second

abdominal segment, a distinct furrow down the centre of the meta-

notum ; wings smoky, especially at the apex; spines long, acute. guatemalensis.

230 HYMENOPTERA.

1 (12). Hind tibize black at the base and apex; metanotum for the greater

part black, a yellow transverse line near the base; a large yellow

mark close to the base of the black on the second abdominal

segment . . 1 6 ee ee ee ee ee + Obtusispina.

12 ad Tibize yellow or fulvous.

18 (PM). Hind legs fulvous ; coxze not marked with black; femora not lined

with black.

_ 14 (15). Metanotum broadly black ; the black on the second abdominal seg-

ment transverse at the base. . . . . . . « fulvipes.

5 (14). Metanotum yellow, except a black cross ; ‘the black on the second

abdominal segment deeply indented at the base . . . - . . cructatus.

16 (13). Femora lined with black ; coxze with a large black mark.

17 (18). The central longitudinal black line on the metanotum joined to the

spiracles by a black line; the black on the second abdominal

“segment sharply indented at the base. . . . Lo . fulvofemoratus.

18 (19). The central black line on the metanotum not joined to the spiracles

by a black line; the black on the second abdominal segment

rounded or transverse at the base.

9 (20). Central black line on the metanotum broadly dilated at the base,

almost touching the spiracles ; no furrow in its centre close to

the keel; the black in centre of the second abdominal segment

broad at the base . . .. ~ 8 ee 6) 6montezuma.

20 (19). Central line scarcely dilated at t the base, a ‘farrow down its centre ;

the black on the second abdominal segment narrow. . . . . canaliculatus.

1. Polycyrtus obtusispina. (Tab. X. fig. 1, metanotum and base of abdomen.)

Niger, flavo-varius ; lineis 2 mesopleuralibus, macula ad apicem abdominis segmenti 1', basi apiceque tibiarum

posticarum, nigris; alis hyalinis, apice fumatis, stigmate nigro. 9.

Long. 18 millim.; terebra 8 millim.

Hab. Guatemata, San Gerénimo (Champion).

Antenne stout, nearly as long as the body; the basal joints beneath and the seventh

to eleventh joints, white. Head yellow, posteriorly and the vertex in the centre black ;

mandibles punctured, the tips blackish ; frontal spine conical. Thorax black ; the pro-

sternum beneath, a broad line on the edge of the pronotum, the tegule, a line on either

side of the apex of the middle lobe of the mesonotum, the scutellar keels, the apex of

the scutellum, the postscutellum, and the sutures, yellow ; mesopleure yellow, except a

black mark beneath the wings enclosing the yellow tubercles, a broad oblique mark in

the centre, and the mesosternal suture broadly, black. Metanotum black above the trans-

verse keel, except a curved mark in front of the spiracles; from these a broad black line

runs down the side to a little below the spines, where it projects outwards; and in

front of the spines these lateral lines are united by a broad transverse one, while from

the centre of this latter a short, moderately thick line runs down to the apex. Meta-

pleure yellow, except the suture, which is broadly black, and the above-mentioned

POLYCYRTUS. 231

lateral prolongation from the spiracular black line; obsoletely punctured ; spines short,

thick, obtuse. First abdominal segment black beneath, a large black mark above,

leaving a broad yellow band at the apex ; second segment broadly at the apex, narrowly

laterally, yellow, a yellow mark (somewhat pear-shaped, but with the base transverse)

at the base of the black portion; the other segments yellow, black at the base; ventral

surface entirely yellow. Ovipositor black, scarcely so long as the body. Legs yellow;

the coxee with a broad black mark on the outer side, the hind pair also black at the

base on the lower side; all the femora and the four anterior tibiz and tarsi lined with

black above, the hind tibie broadly black at the base and apex. Wings slightly smoky,

nervures black; areolet longish, narrow, the apical nervure bullated in the centre, the

recurrent nervure almost interstitial.

The largest of the Central-American species, and inter alia easily known by the broad

transverse yellow stripe on the black basal part of the metanotum and by the yellow

mark in the centre of the black on the second abdominal segment.

2. Polycyrtus melanoleucus.

Mesostenus (Polycyrtus) melanoleucus, Brullé, Hist. Nat. Ins. Hymén. iv. p. 204; Cresson, Proc.

Acad. Phil. 1873, p. 142°.

Hab. Mexico, Orizaba, Cordova! (Sumichrast).

It is quite possible that this species may be identical with P. collinus; but, without

an examination of a typical specimen, I am unable to decide this.

8. Polycyrtus collinus. (Tab. X. fig. 2, metanotum and base of abdomen.)

Niger, flavo-varius ; tibiis posticis nigris ; abdominis segmentis 2° et 3° nigris, apice maculisque 2 lateralibus,

flavis ; alis hyalinis, stigmate nigro. 9°.

Long. 17 millim.; terebra 6 millim.

Hab. Guatemata, El Reposo 800 feet (Champion).

Antenne nearly as long as the body ; the sixth to the twelfth joints clear white, the

basal joint white in the centre beneath. Head whitish-yellow, behind and the vertex

(except the orbits) black ; face punctured ; base and apex of the mandibles,and the extreme

apex of the clypeus, black. Prothorax black; prosternum, and a broad line on the edge

of the pronotum, yellow. Mesonotum black ; two lines at the apex of the middle lobe, the

tegule, the keels of the scutellum, the apical half of the latter, the postscutellum, and a

thin line running from the scutellum and postscutellum to the wings, yellow. Metanotum

yellow ; the base, a broad line from the latter running down the centre broadly dilated at

the transverse keel (the lateral dilatation united to the spiracles, and projecting outwards

towards the spines in front), and a line running down from the spiracles (which are in the -

black line), black. Pleuree white, the centre of the middle depression of the meso-

pleura, a small mark in front of it, the mesosternal suture, the metapleural suture, and a

somewhat triangular spot over the hind cox, black. The upper transverse keel on the

metanotum distinct, the metapleura strongly punctured and transversely striated in the

232 HYMENOPTERA.

middle ; spines longish, stout, obtuse at apex. Abdomen longer than the head and thorax

together ; first segment longer than the second; petiole shining, impunctate, black

beneath and in the centre above to the middle of the postpetiole, where the black

becomes dilated ; second segment, except the apex, and a large mark on either side not

far from the base (the mark curving round towards the base of the segment at the end),

black ; third segment black, except an indented spot on either side, and the apex broadly,

yellow; the apices of the other segments broadly, and the ventral surface, yellow.

Ovipositor as long as the thorax, black. Legs yellow, lined above with black, the hind

tibie broadly ; a longish black mark on all the coxe; posterior tarsi yellow, black at

the base; the four anterior tarsi fuscous beneath. Wings hyaline, fuscous at the apex ;

stigma black; areolet small, longer than broad, slightly angled where the recurrent

nervure is received, the apical nervure bullated in the centre. |

4. Polycyrtus confirmatus. (Tab. X. fig. 3, metanotum and base of abdomen.)

Long. 15 millim. ; terebra 3-4 millim.

Hab. Guatemata, Volcan de Atitlan 2500 to 3500 feet (Champion).

Almost identical in coloration with the preceding species; but the body is much

narrower and more slenderly built; the frontal spine is not so stout, and has an upward

curve; the spines on the metathorax are not so stout, and are sharper at the apex; the

black transverse band on the metanotum does not reach the spiracular longitudinal line ;

the second segment of the abdomen is longer, being nearly as long as the first, the

lateral yellow marks are not so broad, and are more produced towards the base of

the segment; the metapleure are scarcely punctured.

5. Polycyrtus ferox.

Polycyrtus ferox, Cresson, Proc. Acad. Phil. 1878, p. 148 (¢)’.

Hab. Mexico, Orizaba! (Sumichrast).

~——~--« 6 Polycyrtus major.

Polycyrtus major, Cresson, Proc. Acad. Phil. 1873, p. 143 (?)’.

Hab. Mexico, Orizaba! (Sumichrast).

7. Polycyrtus cruciatus. (Tab. X. fig. 4, metanotum and base of abdomen.)

Niger; pleuris metathoraceque flavis; pedibus flavo-fulvis ; lineis 3 metathoracis maculaque ad apicem abdo-

minis segmenti 1’, nigris; alis subfumatis. 9.

Long. 15 millim. ; terebra fere 3 millim.

Hab. Mexico (Sal/é).

Head yellowish-white ; behind, the vertex in the centre, and the base of the man-

dibles, black; frontal spine short and obtuse at the apex; face projecting in the centre ;

clypeal fovee longish, oblique. Antenne slender, the yellow ring on the flagellum broad.

POLYCYRTUS. 233.

Prothorax black, except the prosternum and a line on the pronotum, which are yellow.

Mesonotum black; the scutellar keels, the apex of the scutellum, and the sutures,

yellow. Pleure yellow, except the part surrounding the tubercles under the yellow

tegule. Metathorax yellow, except the suture between it and the mesothorax ; a black

line (dilated on either side at the transverse keel, thus forming a cross) going down

from this to the apex, and another line going down from each spiracle, black. The

metathorax entirely impunctate, the transverse keel straight, the spines short and

obtuse. First abdominal segment narrow, impunctate, a black mark (rounded at the

base, transverse and broader at the distal end) at the apex; base of the second segment

black, the black dilated at the apex laterally, a large black mark occupying the greater

part of the segment; this mark is transverse at the apex, the base projecting on either

side into a fish-hook-like process, which is nearly as long as the body of the mark; the

other segments have a broad black band at the base. Sheath of the ovipositor black,

pilose, scarcely one half the length of the abdomen. Legs immaculate honey-yellow ;

the femora of a darker fulvous colour, the tips of the tarsi black. Wings with a

smoky tinge; stigma testaceous, lighter in the centre.

8. Polycyrtus fulvofemoratus. (Tab. IX. fig. 22, 9; and Tab. X. fig. 5, Y

metanotum and base of abdomen.)

Niger, flavo-varius ; scutello flavo ; pedibus fulvo-flavis; coxis posticis flavis, nigro-lineatis ; femoribus posteri-

oribus supra fusco-lineatis. 9.

Long. 16 millim.; terebra 5 millim.

Hab. Guatemata, San Gerénimo (Champion).

Antenne nearly as long as the body, microscopically pilose. Head with the

mandibles entirely, and above the antenne, except the orbits broadly, black ; frontal

spine short, thick, obtuse, a roundish tubercle at its base; eyes distinctly margined.

Prothorax black, except the prosternum and a broad line on the edge, which are yellow ;

the sides hollowed, transversely striated. _Mesonotum black; two large lines on the | ae

lateral lobes, the tegule and the scutellar keels and the scutellum entirely, black; ~

pleure and the sternal sutures black, the latter distinct, deep, longish; a transverse

line at the base of the metanotum (continued down the sides), a broad line down the

centre, and one from the spiracles (joined to the central line by a transverse one), black ;

the transverse line at the base and the one from the spiracles cover the furrows; the

transverse carine distinct. Spines longish, stout ; the sides projecting as a broad tubercle

in front of the hind coxe. First abdominal segment black, except at the apex; second

segment with a broad transverse band at the base, the sides projecting at the apex (in

front of this is a large black mark with the base indented by a triangular indentation),

the apex truncated; third segment with a large black mark at the base; the other

segments almost entirely yellow. There is a broad line on all the coxe, a line on the ~

trochanters and over the hind femora, black ; the apices of all the tarsi are blackish.

BIOL. CENTR.-AMER., Hymenopt., November 1885. 2 HH

234 HYMENOPTERA.

9. Polycyrtus montezuma. (Tab. X. fig. 6, metanotum and base of abdo

mien.)

Niger, flavo-varius; pedibus apiceque scutelli, flavis; femoribus fulvis ; coxis posticis flavis, nigro-lineatis ;

stigmate fusco. ¢.

Long. 18 millim.

Hab. Mexico (Sallé).

Antenne densely pilose, a broad white ring beyond the middle (joints 8-13). Head

yellow, except behind and the vertex in the centre; tips of the mandibles black. Pro-

thorax black, the prosternum and a broad line on the edge of the pronotum, yellow.

Mesopleura and sternum entirely yellow, the mesonotum black; the tegule, a short

line on either side of the apex of the middle lobe, the apex of the scutellum, the post-

scutellum, and the sutures, yellow. Metathorax yellow, the base broadly black, and

the black continued down the centre, becoming gradually narrowed from the base to

the apex ; a narrow black line runs from the spiracles down the side; the metapleura is

black, except the suture and a small mark over the hind coxe; the metathorax is

covered with long fuscous hair, and the spines are obtuse and short. First abdominal

segment black above, the sides narrowly (except at the base and at the tubercles, where

the yellow is broader), the apex broadly, and the lower side, yellow; second segment

black at the base, the black continued along the sides for about one third of the length

of the segment and enclosing a small yellow mark and becoming dilated at the apex ;

in front of this is a large black mark, which occupies the greater part of the segment;

it is narrowest at the base, where the sides project irregularly, and not transverse like

the apex; the apex of the second and following segments broadly yellow; the apical

segment for the greater part yellow. Legs fulvous; the coxe clear yellow, lined on

the outside with black. Wings hyaline, stigma fuscous ; areolet a little longer than

wide, outer nervure bullated. —

Differs from P. fulvofemoratus in there being no cross black band joining the central

stripe and the spiracles; in the basal part of the middle stripe being much broader

than the middle, the basal part forming a triangle in front of the spiracles, while in

P. fulvofemoratus it is not much broader than the parts of it at the keel, and is also

narrowed in the middle. The black at the base of the second abdominal segment is

prolonged along the sides, while in P. fulvofemoratus it is completely transverse ; in

the latter species too the base of the black mark is sharply indented, the sides projecting

sharply.

10. Polycyrtus canaliculatus. (Tab. X. fig. 7, metanotum and base of abdo-

men.)

Niger, flavo-varius ; apice scutelli pedibusque, flavis; lineis 3 metathoracis femoribusque supra, nigris ; alis

hyalinis, stigmate testaceo. ¢.

Long. 15-16 millim.

POLYCYRTUS. 235

Hab. Guaremaua, San Gerénimo (Champion).

Head, pro- and mesothorax coloured as in P. montezuma; the mandibles only black

at the base ; apical half of the scutellum yellow ; frontal spine shortish, conical. Meta-

notum with a broad black mark at the base, which is not joined to the black suture of

the metapleura; a broad band runs down the centre from the base, where it is not

dilated ; a narrower line runs down from the spiracles; there is no transverse line, and

the transverse keel is ‘distinct; behind it in the middle is an indistinct, somewhat.

triangular, area; a suture runs from it down the black central line ; pleure transversely

punctured ; spines broad, longish. First abdominal segment black, except at the apex

- and along the sides; second segment with a black line along the base and continued

along the sides for about the basal third of the segment ; in front of this is a large black

mark, narrow at the base, the apex transverse, the sides not rounded ; basal half of the

third segment black ; the other segments narrowly lined with black. There is a black

mark on each coxa, and a somewhat obscure black line over the femora and trochanters.

(this latter interrupted) ; the base of the hind tibie is black.

The second abdominal segment is marked very much as in P. montezwma and

P. blanditus; the former, however, has the central black mark longer and slightly

indented at the base, the apex being transverse, while in P. canaliculatus the sides are

cut off; the latter has the base not rounded as in P. canaliculatus, but sharply truncated,

and at the apex the sides project. Neither of the above species has the black line on

the metanotum sulcated.

11. Polycyrtus blanditus. (Tab. IX. fig. 21.)

Long. 15 millim.

Hab. Guatemata, El Reposo 800 feet (Champion).

Smooth, shining, impunctate; the sides of the prothorax longitudinally striated.

Antenne longer than the-body, the white ring broad and placed near the apex ; pilose.

Ocelli raised ; two carine run from them to the frontal spine (which is broad and

rather obtuse) becoming more distinct as the spine is reached. A large fovea imme-

diately below the antenne. Apex of the clypeus and the base of the mandibles black.

Sides of the prothorax depressed; in front is a sharp margin, from which, at the top,

an oblique keel runs to a large semilunate depression at the apex. Sutures of the

mesonotum deep; a short keel in the centre of the middle lobe at the base. The pro-

thorax is black, except the prosternum and a broad mark on the edge above.

Mesonotum black; two short yellow lines in the middle; the keels in front of the

scutellum, and the apical half of the latter, yellow; the pleure below the wings are

black, as well as the sutures; the sutures between the meso- and metanotum and the

postscutellum are yellow. Metathorax yellow, the base broadly black; a broad black

2 HH 2

236 HYMENOPTERA.

line down the centre from the black basal part; a thinner line runs from the spiracles

down the sides, and there is a small black mark over the hind coxe; the upper

transverse keel is distinct and is curved upwards a little in the middle, from which a

short keel runs upwards; the second transverse keel is obsolete; spines longish, stout,

slightly curved. Petiole black, except at the sides and beneath ; apex of the postpetiole

yellow. The second segment yellow, black at the base and a short distance along the

sides; in front of this is a large black mark, rounded and narrowed at the base, the

apex truncated in the middle, the sides projecting. The other segments are broadly

black at the base. There isa black line on all the coxe and over the femora and

trochanters ; the anterior tarsi are black at the apex. Areolet longer than broad,

dilated at the apex; the outer nervure thin but distinct.

_-———_ 12. Polycyrtus paululus. —

Polycyrtus paululus, Cresson, Proc. Acad. Phil. 1873, p. 145 ( 2)’.

Hab. Mexico, Cordova! (Sumichrast).

13. Polycyrtus junceus.

Polycyrtus junceus, Cresson, Proc. Acad. Phil. 1873, p. 145 (¢)’.

Hab. Mexico, Orizaba 1 (Sumichrast).

14. Polycyrtus chontalensis, (Tab. X. fig. 8, metanotum and base of abdo-

men. )

Niger, flavo-varius ; scutello apiceque abdominis segmento 2°, flavis; metathorace punctulato; alis hyalinis,

stigmate nigro. ¢.

Long. 18-19 millim.

Hab. Nicaracua, Chontales (Janson).

Antenne stout, as long as the body, covered with close pubescence. Eyes margined ;

front depressed, the spine short, conical, and obtuse; face punctured, projecting in the

centre; mandibles black at the base; above the antenne the head is black, except

round the eyes. Pronotum black, except a broad line above. Mesonotum black, a

yellow line along the outer edge of the central lobe; pleural sutures black; scutellum

yellow, except at the base; the carine in front of it being also yellow, as is also the

suture between the meso- and metanotum. Metanotum black at the base, along the

transverse keel and down the sides broadly from the spiracles; a broader line down the

centre, and a mark over the hind coxe, black; the basal region slightly, the rest

strongly, punctured, the sides transversely striated; the centre, between the two

distinct transverse keels, longitudinally striated; from the upper transverse keel two

short, slightly diverging keels run halfway towards the base in the centre; tubercles

broad, obtuse. Petiole black at the base, a thin line along the sides and a thin central

POLYCYRTUS. 237

line running to the postpetiole, which is also black, except at the apex. The second

segment is black, broadly yellow at the apex; a thin lateral spot at the base, and a

larger one in the centre of the black part. The other segments black, except at the

apex ; the black on the apical segment smaller and narrower from the centre. Ventral

surface yellow, the segments lined with black. The four anterior coxe have a black

line at the base and a larger black spot at the apex; the hind coxe are broadly lined

with black down the centre, which is hollowed and transversely striated and punctured.

Areolet longer than broad, the outer nervure bullated.

15. Polycyrtus acerbus.

Polycyrtus acerbus, Cresson, Proc. Acad. Phil. 1878, p. 144(9)'.

Hab. Mexico, Orizaba 1 (Sumichrast).

-~ 16. Polycyrtus macer.

Polycyrtus macer, Cresson, Proc. Acad. Phil. 1873, p. 144 (g 2)’.

Hab. Mexico, Cordova! (Sumichrast).

17. Polycyrtus guatemalensis. (Tab. X. fig. 9, metanotum and base of

‘abdomen. )

Niger, flavo-varius; apice scutelli flavo, dimidio basali tibiarum posticarum nigris; alis fere fumatis, stigmate

nigro. ¢.

Long. 16 millim.

Hab. Guatemata, Purula (Champion).

Head black above the antennz, except the orbits; the apex of the clypeus and the

base of the mandibles black ; spine longish, stout, not tapering much towards the apex ;

a carina runs from its sides to the eyes, another obliquely upwards and another less

strongly defined from its centre upwards. Prothorax black, except the prosternum and

broad mark on the edge. Mesonotum black, except two lines at the base of the

middle lobe, which has a short keel in its centre at the base. Scutellar keels and the

apex of the scutellum, broadly yellow. Pleural sutures black. Near the base of the

metanotum is a transverse, rather wide depression, which is black, the black touching

the extreme base in the centre; from this a broad black line runs down the centre

and a narrower one runs down the sides from the spiracles; over the hind coxe is a

black mark. The metathorax is not very much shorter than the mesothorax ; it has a

gradual slope to the apex; in the centre is a longitudinal canal; the sides are trans-

versely striated ; the spines are long and curved ; the upper transverse keel is distinct,

the lower one obsolete; the sides in front of the hind coxe project as a blunt tubercle.

Petiole black, except laterally and beneath ; postpetiole yellow at the apex. Second

segment with a large black mark, which occupies three fourths of it, and has a small

238 HYMENOPTERA.

yellow transverse line in its centre at the base. The other segments are broadly black

at the base. All the coxe bear a black line on the outside ; all the femora, trochanters,

the four anterior tibie and tarsi, and the basal half of the hind tibie are black above.

Areolet longer than wide, the outer nervure distinct and nearly joined to the

recurrent nervure.

Not unlike P. chontalensis, but the metanotum is not strongly punctured and the

spines are much longer, thinner, and curved.

18. Polycyrtus nigritibialis. (Tab. X. fig. 10, metanotum and base of abdo-

men.)

Niger, flavo-varius; apice scutelli, abdominis segmento 2° apice et basi, flavis; tibiis posticis nigris; alis

hyalinis. <¢.

Long. 12 millim.

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Antenne much longer than the body, pilose; third joitit considerably longer than

the fourth. Head black above the antenna, except the orbits broadly ; frontal spine

longish, thick, not tapering much towards the apex; thres carine, not very distinct,

lead to it from above ; eyes not distinctly margined. Sides. “of the prothorax black and

longitudinally striated; above black, except a broad yellow:line on the edge. Meso-

notum black ; two lines in the centre, more than the apic@l half of the scutellum and

its keels, yellow. Pleuree below the wings black. The centie ‘of the metanotum broadly

in the middle at the base black, the black continued as a. hatrow line down the pleure,

and in the middle as a broad stripe; a narrower line down ‘the sides from the spiracles

(joined to the middle stripe by a short transverse line), and j a small line over the hind

coxe, black; the metanotum is depressed in the middle behind the postscutellum ;

upper transverse keel distinct, the lower obsolete; spines long, stout. First abdominal

segment black, except at the apex and laterally; second segment with a large black

mark, dilated at the apex like the segment itself; the other:segments broadly black at

the base. A broad line on all the coxe, a line over the four anterior legs and also

over the hind trochanters and femora, and the hind tibie. entirely, black. Areolet

longer than broad, the outer nervure quite distinct.

_—

19. Polycyrtus mancus.

Polycyrtus mancus, Cresson, Proc. Acad. Phil. 1878, p. 145 (g ¢)'.

Hab. Mexico, Orizaba ! (Sumichrast),

20. Polycyrtus fulvipes. (Tab. X. fig. 11, metanotum and base of abdomen.)

Niger, flavo-varius ; thorace punctulato ; scutello nigro, apice flavo ; pedibus fulvis, anticis flavis ; alis hyalinis,

apice fumatis. ¢.

Long. 12 millim.

-POLYCYRTUS. 239

Hab. Guatemata, El Tumbador 2500 feet (Champion).

Antenne much longer than the body; pilose, especially on the lower side. Head

yellow ; behind, the middle of the vertex, and the mandibles, black ; closely punctured ;

below the ocelli striated; frontal spine longish, acute. Thorax strongly punctured,

mesopleura striated in the middle, metapleura reticulated; base of the metanotum

reticulated, striated. Scutellum with a few scattered punctures. Prothorax in front,

a longish line on the edge of the pronotum, the tegule, the tubercle beneath them, a

large oblique mark on the lower side of the mesopleura, the sternum, the greater part

of the metapleura, two longish lines on the disc of the mesonotum, the apex of the

scutellum, the postscutellum, and two large marks on the metanotum covering the

_ tubercles, yellow ; tubercles shortish, thick. First abdominal segment yellow, a large

black mark towards the apex, which is itself yellow; the other segments black, yellow

at the apex. The four anterior coxe are yellow, the hind pair fulvous like the rest of

the legs and with a yellow mark at the base. Areolet minute, narrow, closed at

the apex. :

21. Polycyrtus religtus.

Polycyrtus reliquus, Cresson, Proc. Acad. Phil. 18738, p. 146 (3 yr,

Hab. Mzxico, Orizaba ! (Sumichrast).

This species agrees with P. fulvipes in having the thorax punctured, but the punctua-

tion is stronger ; there is only one yellow mark on the mesonotum; the scutellum is,

for the greater part, yellow;. the spines on the metathorax are nearly obsolete; the

black central stripe on the metanotum is separated from the basal black part ; the

hind femora are yellow and lined with black, and the femora are also lined with black.

22. Polycyrtus copiosus.

Polycyrtus copiosus, Cresson, Proc. Acad. Phil. 1873, p. 146 (3 ?)’.

Hab. Mexico, Orizaba, Cordova! (Sumichrast).

23. Polycyrtus accuratus.

Polycyrtus accuratus, Cresson, Proc. Acad. Phil. 1873, p. 147 (?)'.

Hab. Mexico, Mirador! (Dr. Sartorius).

24. Polycyrtus furvus.

Polycyrius furvus, Cresson, Proc. Acad. Phil. 1873, p. 147 (¢)’.

Hab. Muxtco, Orizaba * (Sumichrast).

240 HYMENOPTERA.

B. Body for the greater part red. (Species 25-34.)

~~ 25. Polycyrtus univittatus.

Polycyrtus univittatus, Cresson, Proc. Acad. Phil. 1878, p. 148 (3 2)’.

Hab. Muxico, Orizaba, Cordova! (Swmichrast).

26. Polycyrtus pallidus.

Polycyrtus pallidus, Cresson, Proc. Acad. Phil. 1873, p. 148 (¢)’.

Hab. Mexico, Cordova! (Sumichrast).

27. Polycyrtus pallidibalteatus.

Pallide rufus ; antennis, vertice, prothorace, tegulis, mesothorace, metathoracis basi abdominisque dorso (apicibus-

segmentorum exceptis), nigris; annulo flagello antennarum, facie, ore, orbitis, linea pronoti, apice scutelli

postscutelloque, albis; alis hyalinis, nervis nigris. 92.

Long. 21 millim.

Hab. Mexico, Orizaba (Bilimeh).

Antenne, if anything, longer than the body, covered with a microscopic pile. Head

impunctate, shining; pale white, except the vertex in the centre and behind; frontal

spine stout, about one half the length of the scape. Lobes of the mesonotum well

developed (especially the middle one), the lateral one with a very distinct margin along

the edge. The two transverse keels on the metanotum are distinct, the upper one but

slightly bent upwards in the middle; the lower one is bent sharply upwards, thus ~ ;.

spines short, blunt (double as long as wide). The metathorax bears some scattered

pale longish hairs; the black at the base of the metanotum is divided in the middle

and it runs there and at the sides into the red. Petiole black, reddish at the base,

sides, and beneath; the apex of the postpetiole broadly white. The apices of the

segments are broadly yellowish-white; the tarsi whitish or yellowish ; the anterior legs

yellowish in front, and the tips of the tarsi are black. .

I am not quite sure but this species may be identical with the Brazilian P. histrio,

Spinola (Ann. Soc. Ent. Fr. ix. p. 155, t. 7. fig. 3; Brullé, Hymén. iv. p. 214;

Taschenberg, Zeits. f. d. gesammt. Naturwiss. xlviii. p. 78), with which it agrees in

coloration; but P. histrio, so far as I can make out, has only one keel on the meta-

notum, the lower one so conspicuous in the present form being absent. Brullé

furthermore describes the spines as “longues et un peu arquées” in the female, terms

which scarcely fit P. pallidibalteatus. From the next species it may easily be known

by the much darker dorsum of the abdomen (including the petiole), and by the black

base of the metanotum; P. erythrosternus, moreover, having the spines much longer:

and sharper with no keel between them, the face being black.

POLYCYRTUS. 2AT

28. Polycyrtus erythrosternus. (Tab. IX. fig. 20.)

Rufus, nitidus ; capite, pronoto, mesonoto antennisque, nigris; annulo antennarum, orbitis, linea pronoti,

tegulis, lineis 2 mesonoti, scutelli apiceque, flavis ; abdominis dorso fusco variegato ; alis hyalinis, stigmate

testaceo.

Long. 14 millim.

_ Hab. Panama, Bugaba (Champion).

Antenne longer than the body, a little thickened and compressed towards the apex ;

the annulus broad. Front projecting, the projecting part narrowed towards the apex

and depressed below the antenne; the spine conical, semi-obtuse at the apex; a

tubercle at its base. Orbits from the middle to the back broadly white; a whitish

mark in the centre of the clypeus at the apex; sides of the mandibles yellowish ; palpi

reddish yellow. The mesosternum is reddish yellow, black in front ; the yellow line

on the edge of the pronotum is broad; the carine in front of the scutellum yellow.

Scutellum black on the top, reddish at the sides, and yellow at the apex. Transverse

keel on the metathorax acute, a little curved upwards in the middle; the base of the

metanotum somewhat depressed in the centre. Tubercles large, curved, semi-acute at

the apex. Metapleure with scattered punctures. The ground-colour of the abdomen

is obscure red ; the sides incline to yellow, and the back, from the second segment, is

fuscous, the apices of the segments being much lighter, almost reddish, in tint. The

scutellum and metathorax are sparsely covered with long pallid red hair; the apex

more densely with fuscous hair. Sheath of the ovipositor black, microscopically pilose.

The hind tarsi are yellow, black at the apex; the four anterior ones black, except the

basal joint, which is reddish.

Allied to P. rujfiventris, Brullé, from Brazil; but may be known from it by the

fuscous colour of the abdomen, the absence of white marks on the mesothorax (except

the scutellar keels), and the reddish post-scutellum, while the metathorax is differently

formed.

29. Polycyrtus atriceps.

Polycyrtus atriceps, Cresson, Proc. Acad. Phil. 1878, p. 148 (9 )*.

Hab. Mexico, Orizaba ! (Sumichrast).

30. Polycyrtus tinctipennis. (Tab. IX. fig. 19.)

Rufus ; capite (ore excepto) antennisque nigris, flagello antennarum annulo albo ; tarsis posticis pallide flavis ;

alis flavo-hyalinis, stigmate rufo-testaceo. @Q et ¢.

Long. 13-14 millim. ; terebra 43 millim.

Hab. Panama, Volcan de Chiriqui, 2000 to 6000 feet (Champion).

Smooth, shining, impunctate ; thorace sparsely covered with long reddish hairs; apex

of the abdomen densely covered with longer hairs, also red. Antenne a little longer

than the body, thickened and compressed towards the apex, covered with a microscopic

BIOL. CENTR.-AMER., Hymenopt., February 1886. 2 II

242 HYMENOPTERA.

pile ; third joint much longer than the fourth. Clypeus rounded at the apex, projecting,

reddish, as also are the palpi; mandibles reddish yellow, the apices piceous; frontal

spine 21 times longer than broad, obtuse at the apex. Transverse keel on the meta-

thorax large, sharp, turned a little upwards in the middle ; above it is a large, some-

what triangular depression (broadest at the base) which is a little raised in the centre.

Tubercles large, a little curved, indistinctly keeled on the sides above, and hollowed at

the base, compressed laterally towards the apex. Between the tubercles are three, not

very distinct, longitudinal carine. The sides of the metathorax are obscurely punctured.

Petiole curved, a little longer than the second segment. Areolet longer than broad,

the outer nervure distinct. ——-

The male has the antenne longer than in the female; the thorax is not so shining,

being almost aciculate, and the clypeus is yellowish.

This species is closely related to P. atriceps, which differs from it in having the hind

tibiee yellow, the wings hyaline, the basal margin of the third and following abdominal

segments blackish. The tubercles on P. atriceps are described as “ robust and obtuse.”

P. nigriceps, Brullé (from Brazil), also agrees with the present species in coloration, |

except that the keels in front of the scutellum are yellow, and the legs pale yellow,

while the metathoracic tubercles are short and conical, the upper region, too, having

two tubercles; P. curvispina is readily distinguished from it by the large areolet and

clear hyaline wings.

31. Polycyrtus chiriquensis. |

Ferrugineus ; antennis, vertice, pronoto mesonotoque (scutello excepto), nigris ; facie, orbitis, linea pronoti,

lineis 2 mesonoti annuloque antennarum, flavis ; alis hyalinis, stigmate nigro-fusco. 9.

Long. 14 millim.; terebra 5 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 5000 feet (Champion).

Smooth, shining, impunctate. Antenne stout, a little longer than the body, closely

pilose. The head is yellow, except behind, a small conical mark below the antenne,

and the vertex in the centre; clypeus scarcely transverse, the sides rounded, the fovece

deep; tips of the mandibles black ; the frontal spine moderately long and acute. The

lower part of the prothorax is ferruginous; the edges broadly lined with yellow. On

the mesonotum the middle lobe is bounded by yellow at the apex. Scutellar carine

yellow. The metanotum is slightly depressed in the middle at the base; the transverse

keel is not very well developed, and is a little curved up in the middle. Tubercles

short (not being much longer than broad), and obtuse at the apex. Abdomen shining,

impunctate; ovipositor scarcely half its length, the sheath black, pilose. Legs longish,

the tarsi inclining to yellowish. Areolet narrow, nearly twice as long as wide, closed

at the apex, the outer nervure nearly interstitial.

A larger species than P. erythrosternus, and easily known from it by the yellow face,

entirely red scutellum, and much shorter and more obtuse metathoracic tubercles.

POLYCYRTUS. 243

32. Polycyrtus curviventris. (Tab. X. fig. 28, 2.)

Rufus ; antennis, capite, femoribus posticis, abdominis dorsis pro parte terebraque, nigris; annulo antennarum,

clypeo, labro mandibulisyue, albis; alis hyalinis, fere fumatis, nervis nigris. 9.

Long. 21-22 millim.; terebra 11 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Smooth, shining, impunctate, sparsely pilose. Lobes of the mesonotum well deve-

loped. Frontal spine conical, short. Transverse keel on the metanotum slightly

curved backwards in the middle. Tubercles longish, slightly curved, of nearly equal

thickness throughout, rounded at the apex. Petiole not defined from the postpetiole.

Apex of the abdomen clavate, oblique. Petiole entirely reddish; the other segments |

black above, the second and third broadly red at the apex. Areolet longer than broad,

dilated at the apex, closed, the recurrent nervure interstitial. |

The largest of the Central American species.

33. Polycyrtus xanthothorax. (Tab. X. fig. 12, 2.)

? Mesostenus xanthothoraz, Brullé, Hist. Nat. Ins. Hymén. iv. p. 213 (4); Taschenberg, Zeits. f. d.

gesammten Naturwiss. xlvil. p. 77 (9)’.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).—Braziu 1.

As I am not quite certain that the Bugaba example (a female) is identical with the

species described by Brullé and Taschenberg, I give a full description of it :—

Antenne scarcely so long as the body, black, a broad white ring beyond the middle ;

moderately stout, covered with a microscopic pile. Head black, the labrum, clypeus,

and mandibles white ; frontal spine shortish, thick, conical. ‘Thorax red; pronotum in

front, and the mesonotum (but not the scutellum), black. Lobes of the mesonotum well

developed. Metathorax longish, with a nearly gradual slope to the apex; the centre

very slightly hollowed, and there is a shallow furrow between the tubercles, which are

short, being not more than twice as long as wide. The upper transverse keel straight ;

the other obsolete. Abdomen black, the upper side of the postpetiole black; the

second segment broadly white at the apex, the other segments narrowly white, the

ventral surface obscure white. The apex of the abdomen decidedly clavate, compressed

laterally, the extreme apex oblique; the ovipositor issuing from the lower side and

projecting upwards, its sheath black and hairy, about half the length of the abdomen.

Petiole longish, slender; second segment nearly as long as the petiole, and longer than

the following segments together. Legs reddish; posterior femora, and the greater part

of the hinder trochanters, black; posterior tibie and tarsi whitish yellow, the apex of

the latter black. Wings scarcely so long as the thorax and abdomen together, hyaline ;

areolet small, a very little longer than broad, the apical nervure bullated, the recurrent

nervure recurved in the middle.

Brullé describes the tubercles in his species as “ longues et arquées,” and ‘Taschenberg

211 2

244 HYMENOPTERA.

says there is “a triangular central white spot on the abdominal segments”; but

the description of the abdominal coloration given by Brullé agrees with our

specimen.

34. Polycyrtus curvispina.

Ferrugineus, nitidus; antennis capiteque nigris, ore albo; antennis annulo albo, tarsis posticis flavis; alis

hyalinis, stigmate testaceo.

Long. 13 millim.

Hab. Costa Rica, Cache (Rogers).

Smooth, shining, impunctate. Antenne much longer than the body, pilose; third

joint longer than the fourth. Front depressed between the eyes, the spine stout,

longish, conical; eyes distinctly margined ; face covered with long white hair. Thorax

covered with long reddish hair; mesonotal sutures deep; a triangular depression at

the base of the metanotum in the middle, a transverse keel in the centre ; tubercles

long and curved. Abdomen slender, covered (especially at the sides) with long fuscous

hair. Areolet large, one half longer than broad, the outer nervure bullated.

In this species the areolet is much larger than in the other species of Polycyrtus or

Mesostenus, but in other respects it agrees with Polycyrtus. If, however, it had not

the frontal spine I should almost have placed it in Cryptus. P. atriceps agrees with it

‘in coloration; but has the metathoracic tubercles “robust and obtuse,” the areolet

closed, and is only four lines in length. VP. nigriceps, Brullé, also agrees with it in

coloration; but differs, inter alia, in having the tubercles short and conical.

POLYANUS.

Polyenus, Cresson, Proc. Acad. Phil. 1873, p. 149.

This section differs from Polycyrtus in the front having two small spines, often united

at the base, instead of one only. In some species of Mesostenus there are slight indica-

tions of these spines, while Polyewnus agrees with the latter in the lobes of the mesonotum

not being well developed as in Polycyrtus. The known species are comparatively few

in number.

1. Polyznus ectypus.

Polyenus ectypus, Cresson, Proc. Acad. Phil. 1878, p. 149 (¢)?.

Hab. Mexico, Orizaba 1 (Sumichrast).

2. Polyzenus ablatus.

Polyenus ablatus, Cresson, Proc. Acad. Phil. 1873, p. 149 ( 7)’.

Hab. Mexico, Orizaba! (Sumichrast).

POLYZENUS. 245

8. Polyenus championi. (Tab. IX. fig. 23.)

Niger, flavo varius; sterno, pleuris proparte, apice sceutelli pedibusque, flavis, femoribus supra nigris; alis

lenissime fumatis. 9.

Long. 16 millim. ; terebra 6 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 6000 feet (Champion).

Antenne stout, longer than the body; a yellow line on the scape beneath, the ring

on the flagellum narrow. Head punctured; behind the centre of the vertex, and the

mandibles, black. Thorax punctured; the pleure obliquely striated, the metanotum

below the first transverse keel longitudinally, the rest transversely, striated. Base of

the metanotum smooth, impunctate, the part next to the transverse keel punctured.

The spiracles placed in an oval area, the part surrounding it finely and closely reticu-

lated. The prothorax in front, a broad //he on its edge, the tegule, the tubercle beneath

them, a large oblique mark on the lower part of the mesopleure, the mesosternum, the

greater part of the metapleura, two lines on the disc of the mesonotum, the carine in

front of the scutellum, a large triangular mark on the apex of the scutellum, the post-

scutellum, and two large marks on the metanotum covering the tubercles, yellow.

First segment of the abdomen yellow, a large black mark covering the apex of the

petiole and the base of the postpetiole; the second segment with a yellow spot covering

the gastrocceli, its apex yellow; the other segments black, broadly yellow at the apex.

Legs yellow, the femora lined with black above; a minute black spot on the middls

-coxee, a broad black line on the hind pair; hind trochanters black above. Apices of

the tarsi black. Areolet distinct, longer than broad, closed at the apex.

4, Polygenus nitidiusculus.

Niger, flavo varius, nitidus ; pedibus flavis, supra nigro lineatis, tarsis posticis lete flavis.

Long. 15 millim.; terebra 6 millim. g

Hab. Guatemaa, Las Mercedes 3000 feet (Champion).

Head yellow, the middle of the vertex behind, and the apex of the mandibles, black ;

face transversely striated. Thorax smooth, shining, impunctate, black; the prothorax

in front, a broad line on its edge, the tegule, the tubercles beneath them, the greater

part of the meso- and metapleure, a large mark beneath the hind wings, the edges of

the middle lobe of the mesonotum, a line joined to it in front of the yellow edge of

the pronotum, the carine in front of the scutellum, the scutellum (except a large black

mark at the base), the postscutellum, a mark on either side of the metanotum, a large

mark covering the tubercles and extended above them, yellow. Metathorax shining,

impunctate; tubercles large, slightly curved. First abdominal segment broad; the

petiole not clearly separated from the postpetiole, black; the base largely and a broad

band on the apex, yellow. The other segments black, yellow at the apex and beneath.

Legs yellow, the four anterior trochanters, the femora, tibie, and tarsi, black above; a

small black mark on the apex of the four anterior coxe; two large marks, joined at the

246 HYMENOPTERA.

apex, on the top of the hind coxe; hind trochanters and femora broadly above, the hind

tibize almost entirely, and the base and apex of the tarsi, black. The antenne are broken

off beyond the base of the flagellum ; the scape is yellow in the centre beneath. Areolet

longer than broad, narrow, open at the apex.

5. Polyzenus orizabensis. .

Niger ; facie, orbitis, tegulis, linea pronoti, maculis pleuratis, maculis 2 mesonoti, apice scutelli, postscutello,

maculis 2 metanoti abdominisque segmentis apice, flavis ; pedibus flavis, coxis, trochanteribus, femoribus

supra apiceque tibiarum posticarum, nigris; alis hyalinis, stigmate nigro. 9.

Long. 17 millim.; terebra 5 millim.

Hab. Mexico, Orizaba (Bilimek).

Antenne black, covered with microscopic down (broken off beyond the tenth joint).

Head yellow, the apex of the mandibles, the vertex above the antenne in the centre,

and the occiput, black. Face, especially the sides, transversely striated. Frontal

spines small, united at the base. Thorax strongly punctured; the pleure (especially

the metapleure) obliquely striated, except the tubercles below the tegule, and a

shining impunctate projecting point in the centre of the mesopleure. Base of the

metanotum irregularly reticulated, the apex transversely striated, and with a rather

abrupt slope. Scutellum opaque, aciculate. The lobes of the pronotum project, and

are broadly yellow; the mesonotal sutures are not deep, the middle lobe not being

much elevated above the lateral ones, and they are lined for three fourths of their

extent by a narrow yellow line. Prosternum broadly, a broad oblique mark on the

mesopleure, the tubercles under the tegule, a somewhat triangular mark immediately

under the hind wings, a large oblique mark on the metapleure, two longish marks

on the apex of the metanotum covering the tubercles (which are longish, stout, and

slightly curved), the keels in front of the scutellum, the apex of the latter, and the

sutures, yellow. The two transverse keels on the metanotum are distinct, and there is

a square area, raised in the centre, at the base in the middle. Petiole dilated laterally

at the extreme base and becoming widened towards the apex, black; the under side

and apex yellow; the other segments black, yellow at the sides, beneath, and at the

apex above. Legs yellow, all the femora lined above with black; two black lines

(united at the apex) on the sides of the hind coxe; the basal joint of the hind

trochanters, the extreme apex of the apical joint, and the base and apex of the hind

ibiee (the apex not all round), black. Areolet longer than broad, narrow, the outer

and inner nervures bullated.

6. Polyenus basimacula. (Tab. IX. figg. 249, 25 3.)

Niger, albo varius ; abdomine rufo, basi nigro; pedibus fulvo-rufis, femoribus nigro lineatis, coxis anterioribus.

flavis. .

Long. 14 millim.; terebra fere 4 millim.

Hab. Guatemaua, San Gerénimo (Champion).

POLYENUS.—CHRISTOLIA. 247

Antenne stout, longer than the body, the yellow ring on the flagellum broad. Head

punctured, except behind, the middle of the vertex, and the mandibles. Thorax strongly

punctured ; the pleure longitudinally, the apex of the metanotum transversely, striated ;

base of the metanotum impunctate, behind the transverse keel punctured, before it, in

the centre, reticulated. Metathoracic tubercles large, stout, a little curved. Thorax

black ; the collar in front, a line on the edge, the tegule, a large mark on the meso-

pleura, the tubercles, a mark under the hind wings, the greater part of the metapleura, a

mark at the apex of the middle lobe, the carine in front of the scutellum, the scutellum,

two large marks on the metanotum (covering the tubercles), white. Abdomen rufous, the

greater part of the petiole black, the apex of the postpetiole yellow. Legs rufous, the

anterior pair yellowish or fulvous in front ; the coxe yellow, marked with black behind,

the hind pair rufous, sometimes tinged with yellow at the base; femora for the greater

part black above, but especially towards the apex. Areolet minute, closed at the apex.

The male has the breast white, and the second abdominal segment more or less

black, otherwise coloured as in the female.

7. Polyznus volcanicus.

Niger, flavo varius; apice scutelli coxisque anterioribus, flavis, abdomine rufo; pedibus fulvis, anticis flavis ;

alis hyalinis.

Long. 14 millim.; terebra 6 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

Similar in coloration to the preceding species, but differing in having the basal half

of the scutellum black, the base of the metanotum more strongly punctured, and the

ovipositor longer. The femora are lined above with black.

CHRISTOLIA.

Christolia, Brullé, Hist. Nat. Ins. Hymén. iv. p. T63. Atle .

This genus does not seem to me to be clearly defined from Mesostenus, and still less

from Cryptanura. The species (as are also those of Cryptanura) are neotropical, and

are much less numerously represented than the typical forms of Mesostenus.

1. Christolia nubecula.

Christolia nubecula, Cresson, Proc. Acad. Phil. 1873, p. 163 (¢)’.

Hab. Mexico, Orizaba ! (Sumichrast).

9. Christolia panamensis. (Tab. X. fig. 27.)

Niger; annulo antennarum, palpis, abdominis apice tarsorumque posticorum apice, albis; alis hyalinis, stigmate

nigro.

¢ facie alba, sterno coxisque sordide favis.

Long. 20-22 millim.

Hab. Panama, Bugaba, Volcan de Chiriqui 2000 to 3000 feet (Champion).

248 HYMENOPTERA.

Antenne as long as the body, stout, thicker towards the apex, the third joint longer

than the fourth. Head a little wider than the mesothorax, retreating behind the eyes;

front a little projecting; clypeus transverse at the apex, the face transversely rugose,.

opaque. Mesonotum minutely and rather indistinctly punctured, the furrows obsolete.

Scutellum smooth, shining, impunctate; the sides at the base above carinate, laterally

hollowed, strongly striated. Metathorax densely covered with silvery white hair, the

base laterally opaque, obscurely aciculate, the middle and the rest of it transversely

striated, the apex hollowed in the middle; the upper transverse keel curves round

to the extreme base, the second interrupted in the middle; tubercles blunt, short.

Petiole and postpetiole smooth, shining, impunctate; the rest of the abdomen scarcely

so shining, the sides covered with short pale down. ‘The anterior legs (including the

coxe) are obscure testaceous in front, the middle tibie and tarsi less so.

The clypeus may be entirely black or yellow; the apex of the abdomen may be only

white in the middle, or there may be two or three transverse marks on the intermediate

segments. Some specimens (especially those with the mouth black) have the pleure

more densely pilose than others.

The male has the orbits, the face below the antenne, the clypeus, and the mandibles

(except at the tips), yellow; all the coxe beneath, and the four anterior legs on the

under side, obscure testaceous.

3. Christolia calcarata.

Christolia calcarata, Cresson, Proc. Acad. Phil. 18738, p. 164 (3)?

Hab. Mexico, Orizaba 1 (Sumichrast).

4,-Christolia menticula. (Tab. X. fig. 29.)

Niger; antennarum annulo, tegulis, scutello, postscutello, maculis abdominis apice tarsorumque posticorum

apice, albis; pedibus rufis, tibiis tarsisque posticis nigris ; alis hyalinis, stigmate nigro.

do facie flava.

Long. 18-20 millim. ; terebra 7 millim.

Hab. Mexico, Orizaba (Bilimek); Guatemaua, San Gerénimo (Champion); Panama,

Volcan de Chiriqui (Champion).

Antenne as long ‘as the body, stout, thickened towards the apex; the third joint a.

little longer than the fourth. Head scarcely so broad as the mesothorax, opaque, semi-

rugose; front projecting in the middle, the clypeus not projecting so much, surrounded

at the base by a broad and deep furrow, shining, covered with distinctly separated —

punctures; the apex almost transverse; labrum, the base of the mandibles, and the

palpi, yellowish. Mesonotum opaque, finely and closely punctured, the furrows clearly

defined ; scutellum shining, impunctate, the base black, and carinated at the sides,

laterally hollowed and striated. Mes¢thorax densely covered with white hair; the

base aciculate, the rest transversely striated; the upper transverse keel curves round

to the base of the metanotum, the narrower curved part being transversely striated ;.

CHRISTOLIA. 249

the lower one is interrupted in the middle; tubercles short, blunt. Petiole longish,

curved, smooth, shining; an indistinct tubercle on either side of the postpetiole at the

base ; the remaining segments smooth, covered with microscopic down. Areolet quad-—

rangular, the anterior nervure oblique; there is no angle on the lower side.

Apparently a variable species. The Mexican specimens have only the hind knees,

tibize, and metatarsus black, and they have the petiole red. The Guatemalan examples

have the hind knees broadly, the middle knees slightly, the middle tibize and the

tarsi entirely, black, and the fore femora, tibiee, and tarsi more or less black behind,

the hind legs being as in the Mexican form; the petiole has only the extreme base

red. In the Guatemalan specimens there is a broad white or yellowish mark at

the apex of the postpetiole ; a small round mark at the apex of the second and third -

segments ; a small triangular mark on the fourth, and a large triangular one on the fifth,

sixth, and seventh, the segments at their junctions being obscure reddish. The Mexican

specimens want the marks on the petiole and on the second and third segments.

5. Christolia zapotecus.

Christolia zapotecus, Cresson, Proc. Acad. Phil. 1878, p. 165 (¢ ?)?..

Hab. Mexico, Orizaba! (Sumichrast).

6. Christolia mirabilis.

Christolia mirabilis, Cresson, Proc. Acad. Phil. 1873, p. 165 (3 2)’.

Hab. Mexico, Orizaba! (Sumichrast).

7. Christolia mirandus.

Christolia mirandus, Cresson, Proc. Acad. Phil. 1878, p. 165 (¢)*.

Hab. Mexico, Orizaba 1 (Sumichrast).

8. Christolia graciliventris.

Niger ; annulo antennarum, facie, ore, orbitis, scutello, tegulis, linea pronoti, abdominis segmentis apice tarsisque.

posticis, albis ; sterno, pleuris, metanoto (basi excepta) pedibusque, fulvis ; tibiis posticis supra nigris; alis

hyalinis, nervis nigris. @.

Long. 19 millim.; terebra 8 millim.

' Hab. Mexico, Valladolid in Yucatan (Gaumer).

Face punctured, the vertex aciculate in the centre ; tips of the mandibles black.

Mesonotum closely punctured, covered with close fuscous pubescence; pleure more

closely punctured (except in the centre), covered with a greyish-white pubescence.

Metanotum at the base shining and impunctate, in front of the transverse keel aciculate,

the rest transversely striated. Metathoracic tubercles scarcely indicated. Scutellum

much longer than broad, narrowed towards the apex; the mesonotum on either side of

it obliquely striated. Petiole longish, clearly defined from the postpetiole, which is

BIOL. CENTR.-AMER., Hymenopt., February 1886. 2 KK

250 : HYMENOPTERA.

tuberculated at the base laterally, white, the apex of the postpetiole also white, as wel

as the ventral surface. Lobes of the pronctum prominent; there is a white mark on

either side of the mesonotum at the tegule. On the sternum and on the front of the

mesopleura the reddish-fulvous colour merges into yellow. Areolet nearly square, the

nervures bullated in front. Coxe punctured, the four anterior ones yellow in front ;

the hinder femora at the extreme base and apex, the apices of the tarsi, and the extreme

base also of the hind ones, black.

9. Christolia tarsoleucus.

Niger ; scutello, abdominis segmentis apice tarsisque posticis apice, facie, ore, annulo antennarum, linea pronoti,

pleuris, metanoto (basi excepta) pedibusque, fulvis ; alis hyalinis, apice fumatis, nervis nigris. ¢.

Long. 15 millim.

Hab. Guatemata, San Gerénimo (Champion).

Antenne as long as the body, the fulvous ring broad. Face closely punctured ;

clypeus projecting at the apex; vertex wrinkled. Mesonotum punctured, irregularly

striated; lobes of the pronotum projecting; pleure irregularly striated and punctured.

Sutures of the mesonotum deep. Scutellum much broader than long, strongly punc-

tured. The prosternum is fulvous behind, and the line on the pronotum is moderately

broad, and does not reach the tegule; the middle lobe of the mesonotum is edged with

fulvous at the apex, and the pleural tubercles are white. Metanotum black to the

tubercles (which are not clearly defined); the upper transverse keel straight, in front

of it the surface is irregularly wrinkled, shining, and marked with two roundish white

marks, in front of it coarsely and irregularly reticulated, the apex transversely striated ;

the lower transverse keel not defined. Petiole longish, narrow, not separated clearly

from the postpetiole, the base fulvous, the apex white. Hind coxe punctured at

the base and apex; anterior coxe yellow in front; hind spurs, the base of the hind

and the apices of all the tibie, black. Wings short. |

Obs. It is possible that the ring on the antenne, the face, and the edge of the

pronotum are really white, the fulvous tint being, perhaps, owing to discoloration.

10. Christolia pulchripes.

Thorace coxisque posticis rufis; antennis, capite, abdomine, femoribus posterioribus, anticis supra, tarsis inter-

mediis, apice tibiarum intermediarum, tibiisque posticis (basi excepta), nigris ; facie, ore, orbitis, annulo

antennarum, pedibus anticis, tibiis posterioribus basi tarsisque posticis, albis; alis hyalinis, nervis

nigris. ¢.

Long. 14 millim.

Hab. Guaremaia, San Gerénimo (Champion).

Smooth, shining, impunctate; pleure striated, covered with whitish pubescence.

Antenne filiform, longer than the body. Sutures of the mesonotum deep, narrow.

Prothorax for the greater part white in front; a line on the pronotum, the pleural

CHRISTOLIA.—CRYPTANURA. 251

tubercles, and the pleural sutures, white. Metanotum in front of the transverse keel

(which curves up in the middle) transversely striated, covered with silvery pubescence,

behind it shining, impunctate; tubercles absent. Petiole long, narrow, the extreme

base reddish, the apex white, shining, impunctate. Apex of the third and the apical

segments white, opaque, very finely and closely punctured. Four posterior spurs black ;

middle tibie black only behind ; hind tibie entirely black, except a broad white ring at

the base ; tips of the tarsi black. Areolet a little longer than broad, closed, angled on

lower side.

CRYPTANURA.

Cryptanura, Brullé, Hist. Nat. Ins. Hymén. iv. p. 242.

1. Cryptanura sumichrasti. |

Cryptanura sumichrasti, Cresson, Proc. Acad. Phil. 1873, p. 166 (¢ ?)'.

Hab. Mexico, Orizaba, Cordova! (Sumichrast).

| 2. Cryptanura delecta.

Cryptanura delecta, Cresson, Proc. Acad. Phil. 1873, p. 166 (?)?.

Hab. Mexico, Orizaba ! (Sumichrast).

8. Cryptanura acolhua. 7

Cryptanura acolhua, Cresson, Proc. Acad. Phil. 1873 p. 166 ( ¢)’.

Hab. Mexico, Orizaba1 (Sumichrast).

4, Cryptanura incauta. (Tab. X. fig. 30.)

Rufa ; capite, antennis, abdominis apice, tibiis tarsisque posticis, nigris; annulo antennarum facieque pallide

. flavis. 9.

Long. 18 millim.; terebra fere 4 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

' Antenne as long as the body, stout, compressed at the apex; the basal joints a little

thickened at their apices; the third joint longer than the fourth, the basal joint of the

scape reddish beneath. Head wider than the mesothorax ; the face flat, transversely

striated ; clypeus projecting, the apex transverse ; vertex raised in the centre, a furrow

on either side of the ocelli; tips of the mandibles blackish. Thorax finely punctured,

opaque; furrows obsolete. Scutellum gibbous, broader than long. Metanotum trans-

versely rugose ; two broadly curved carine at the base, the first quite close to the base,

the second at the edge of the oblique slope; tubercles minute. Petiole narrow, smooth

and shining; postpetiole semiopaque, obsoletely aciculate, a large tubercle on either

side at the base. Abdomen obsoletely aciculate, black from the third segment, the edges

of the apical segment obscure red, and covered with pale pubescence. Legs longish ;

hind spurs reddish ; the tarsi (especially on the under side) with reddish bristle-like

2KK 2

252 HYMENOPTERA.

hairs; coxe punctured. Wings with a smoky tinge, especially at the base. Areolet

quadrangular, scarcely angled in the middle where the recurrent nervure is received,

moderate in size. |

5. Cryptanura laticarinata.

Hab. Panama, Bugaba (Champion).

Identical in coloration with the above, but only 13 millim.in length. The face longer,

and broadly keeled in the centre; the postpetiole not keeled at the side, and without

tubercles at the base; the areolet larger. The sculpture and the length of the ovipositor

as in C. incauta.

6. Cryptanura pedicata.

Lutea; capite, antennis (annulo excepto), dimidio apicali tibiarum posticarum abdominisque apice, nigris; alis

hyalinis, stigmate nigro. ¢.

Long. 10 millim.

Hab, Mexico (Sallé).

Antenne longer than the body, shortly pilose, the joints closely united, the large

white ring placed beyond the middle, the base of the flagellum inclining to fuscous.

Head, if anything, broader than the mesothorax; sparsely covered with white pile, the

front obsoletely carinate ; tips of the mandibles piceous; palpi pale testaceous. Thorax

aciculate, slightly shining, the furrows on the mesonotum obsolete, the latter gibbous.

Scutellum not raised above the mesoscutum, but the latter slopes away from it at the

sides. Metathorax longish, narrowed behind, the top sloping gradually from the base

to the apex, the sides covered with white hair; there is a longitudinal keel on either

side of the metanotum, but no transverse ones. Abdomen aciculate, the basal segments

narrow, longish, the apical segment compressed laterally. Legs longish; hind spurs

fuscous; base of the metatarsus blackish, the rest of the hind tarsi yellowish, except

the apex, which is black in all the tarsi. Areolet quadrangular, obtusely angled on

the lower side.

7. Cryptanura (?) pachymene.

Cryptanura (?) pachymene, Cresson, Proc. Acad. Phil. 1873, p. 168°.

Hab. Mexico, Orizaba, Cordova, Mirador ! (Sumichrast).

Bred from a species of Pachymenes (Cresson, loc. cit.).

HEMITELES.

Hemiteles, Gravenhorst, [chn. Europ. ii. p. 781.

This genus is a very large one, and especially (so far at least as our present knowledge

goes) numerous in the temperate regions of both hemispheres.

HEMITELES. | 253 ©

A. Abdomen black, banded with white. (Species 1 to 8.)

1. Thorax black, marked with white. (Species 1 to 4.)

1. Hemiteles lascivus. .

Hemiteles lascivus, Cresson, Proc. Acad. Phil. 1878, p. 170( 2)’.

Hab. Mezxico, Orizaba 1 (Sumichrast).

2. Hemiteles patruelis.

Hemiteles patruelis, Cresson, Proc. Acad. Phil. 1873, p.170(¢) am

Hab. Mzxico, Orizaba 1 (Sumichrast).

3. Hemiteles exilis.

Hemiteles exilis, Cresson, Proc. Acad. Phil. 1873, p. 171(¢)’.

Hab. Muxico, Orizaba ! (Sumichrast).

4. Hemiteles rarus.

Hemiteles rarus, Cresson, Proc. Acad. Phil. 1873, p. 171 (¢)'.

Hab. Mexico, Orizaba! (Swmichrast).

2. Thorax ferruginous, mesothorax black above. (Species 5.)

5. Hemiteles irritatus. |

Hemiteles irritatus, Cresson, Proc. Acad. Phil. 1873, p. 171 (¢)’.

Hab. Mexico, Orizaba 1 (Sumichrast).

3. Thorax entirely ferruginous. (Species 6 to 8.)

a. Wings hyaline, without bands. (Species 6.)

6. Hemiteles ingenuus. |

Hemiteles ingenuus, Cresson, Proc. Acad. Phil. 1878, p. 172 (9 yr.

Hab. Mexico, Orizaba 1 (Sumichrast).

b. Wings hyaline, with two fuscous bands. (Species 7 and 8.)

7. Hemiteles adjicialis.

Hemiteles adjicialis, Cresson, Proc. Acad. Phil. 1878, p. 172 (¢)’.

Hab. Mexico, Orizaba 1 (Sumichrast).

This species differs from the next in having no black on the head, the thorax marked

with white, and the hind tibie black. .

254 HYMENOPTERA.

8. Hemiteles rufithorax.

Rufus ; capite abdomineque nigris, albo marginatis; pedibus sordide rufis, anticis basique tibiarum posticarum. |

albis; alis hyalinis, medio apiceque fumatis; stigmate nigro, subtus pallido. @.

Long. 6°5 millim.; terebra 1 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Antenne as long as the body, a broad white ring in the centre; scape obscure white

on the lower side. Head shining, impunctate, black, the orbits broadly white.

Thorax closely punctured ; scutellum aciculate and bearing a few scattered punctures.

Metathorax more strongly punctured, its transverse keels obsolete; tubercles stout,

longer than broad. The thorax in front, the tegule, and the metathoracic tubercles

clear white. Abdomen aciculate; the first segment white, with a large black mark in

front of the postpetiole; second and third segments black, broadly white at the apex;

fourth segment entirely black, the rest white. Legs obscure red, the anterior ones

pale ; hind coxe blackish, their apices white; hind trochanters marked with black ; hind

tibize darker than the others; tips of the tarsi black. Areolet completely open at the

apex; the cloud in the middle is in front of the basal nervure, and does not reach the

costa, nor does it extend beyond the brachial cellule.

B. Abdomen white, banded with black. (Species 9 to 11.)

9, Hemiteles adultus.

Hemiteles adultus, Cresson, Proc. Acad. Phil. 18738, p. 178 (2).

Hab. Mexico, Orizaba 1 (Sumichrast).

Differs from the next species in having the metathoracic tubercles “ prominent,

obtuse,” the hind coxe entirely yellowish, the first abdominal segment with only a spot

on its apex, and the pleure entirely black; from H. sexlineatus it differs in the black

pleure, and in the mesonotum being almost entirely black.

10. Hemiteles flavovariegatus. (Tab. X. fig. 23.)

Niger; facie, ore, orbitis lete, linea pronoti, mesopleuris, sterno, scutello, maculis 4 metathoracis, abdominis-

que segmentibus marginibus lete, flavis; pedibus pallide testaceis, coxis flavis; alis hyalinis, stigmate

nigro. 9.

Long. 8 millim.; terebra 1 millim.

Hab. Guatuma.a, San Gerénimo (Champion).

Antenne longer than the body, the scape beneath and a broad ring on the flagellum

white. Head broad, finely punctured. Mesonotum much more strongly and coarsely

punctured than the head, the pleure not so strongly. Metathorax coarsely punctured

and without tubercles or transverse keels. The prosternum, a broad band on the

edge of the pronotum, the mesopleure (except above), the sternum, a large mark

under the hind wings, a large mark (much narrowed behind) on the metapleura,

HEMITELES. 255.

the scutellum, the postscutellum, and two large longish marks on the metanotum,

yellow. First abdominal segment black, yellow at the base and apex; second segment

yellow, with a large black transverse band at the base, the band narrowed at either

side behind; the third to the fifth segments black, broadly yellow at the apex; the

apical segments entirely yellow. Coxe punctured, the posterior pair with a large black

mark on the outer side; apices of the tarsi blackish, the hinder pair yellow. Areolet

higher than long, open at the apex, angled sharply on the lower side.

11. Hemiteles sexlineatus.

Pallide flavus; antennis, lineis 6 thoracis, metanoti basi abdominisque segmentis basi, nigris ; scapo subtus annu-

loque antennarum, albis; pedibus fulvis, coxis flavis; alis hyalinis, stigmate testaceo. 9.

Long. 8 millim.; terebra 1:5 millim.

Hab. Mexico, Presidio (Forrer).

Antenne, if anything, longer than the body, thickened towards the apex, covered

with microscopic pile. Face punctured; clypeus and the lower part of the face pro-

jecting ; tips of the mandibles black; the space surrounding the ocelli black, the black

projecting as a narrow short line in front and joined to the black occiput by a narrow

black line. Mesonotum closely punctured, the scutellum impunctate; pleure very

finely striated, punctured. Metathorax very finely punctured, the transverse keel nearly

straight; tubercles broadly dilated laterally, not projecting much. A line on the lower

half of the pronotum, the mesonotum at the sides all round, a broad line on the middle

lobe, a narrower one on each of the lateral lobes, the sutures, the base of the meta-

notum (except a small space at the spiracles), a narrow line going down from it on the

outer side of the spiracles, and a broader and shorter one in the centre (not joined to the

black base), black. Abdomen shining, impunctate; a band at the apex of the petiole

in front of the postpetiole, a broad band at the base of the second segment (but not

reaching to the base), and the base of the succeeding segments more narrowly, black.

Hind coxe punctured; hind tarsi yellowish, the tips black. Areolet wider than long,

sharply angled on the lower side. |

Easily known from the preceding species by the more prominent metathoracic

tubercles, by the immaculate pleure, by the petiole having only a small black mark,

and by the immaculate coxe.

©. Abdomen white and honey-yellow, with one or more black bands. (Species 12 to 15.) _

1. Metathorax without tubercles. (Species 12 and 13.)

12. Hemiteles bimaculatus.

Hemiteles bimaculatus, Cresson, Proc. Acad. Phil. 1878, p. 173 (3 92)’.

Hab. Mexico, Orizaba, Cordova: (Sumichrast).

Said to be a common species.

256 HYMENOPTERA.

13. Hemiteles centralis. |

Hemiteles centralis, Cresson, Proc. Acad. Phil. 1873, p. 174 (2) °.

Hab. Mexico, Orizaba! (Suwmichrast).

2. Metathorax with tubercles. (Species 14 and 10.)

14. Hemiteles junctus.

Hemiteles junctus, Cresson, Proc. Acad. Phil. 1873, p. 174 (2) °*.

Hab. Muxico, Cordova! (Sumichrast).

15. Hemiteles scitulus.

Hemiteles scitulus, Cresson, Proc. Acad. Phil. 1878, p. 174 (2) *.

Hab. Mexico, Cordova! (Sumichrast).

D. Abdomen ferruginous and white. (Species 16 to 19.)

16. Hemiteles monilis.

Hemiteles monilis, Cresson, Proc. Acad. Phil. 1873, p. 174 (2)’.

Hab. Mexico, Orizaba! (Sumichrast).

17. Hemiteles sulsus.

Hemiteles sulsus, Cresson, Proc. Acad. Phil. 1878, p. 175 (¢?)’.

Hab. Mexico, Orizaba ! (Sumichrast).

18. Hemiteles admirabilis.

Hemiteles admirabilis, Cresson, Proc. Acad. Phil. 1873, p. 175 (¢ )’.

Hab. Mexico, Cordova 1 (Sumichrast).

19. Hemiteles macula.

Rufus; capite, prothorace, mesonoto, mesosterno antennisque, nigris; annulo antennarum, orbitis, labro, linea

pronoti, maculis 2 mesonoti, scutello abdominisque apice, albis; alis hyalinis, medio fusco fasciato,

stigmate testaceo. °.

Long. 11-12 millim.

Hab. Mexico, Presidio (Forrer).

Antenne scarcely so long as the body, somewhat thickened towards the apex, the

white ring broad ; the scape whitish in the middle beneath. Head finely rugose, still

more finely on the top ; face not projecting much ; the orbits white all round; the clypeus

and lower part of the head together with the mandibles ferruginous. ‘Thorax opaque,

closely punctured ; scutellum aciculate, shining, the sides margined towards the base,

which is much broader than the apex; postscutellum very shining; mesopleura longi-

tudinally punctured. Metathorax rugose-striate; upper transverse keel straight, the

lower keel obsolete; tubercles pallid, longer than broad. Petiole and postpeitole

HEMITELES. 258

smooth, shining, impunctate; the rest of the abdomen aciculate. The apical segments

are white at the sides, the seventh segment broadly white above; the eighth segment,

with the cerci, whitish. Legs stout; hind coxe punctured. Areolet quadrate, the

apical nervure pellucid; the apex, and a narrow band across from the stigma, smoky.

E. Abdomen ferruginous or honey-yellow. (Species 20 to 27.)

1. Thorax marked with black. (Species 20 to 23.)

20. Hemiteles transilis.

Hemiteles transilis, Cresson, Proc. Acad. Phil. 1873, p.175 (¢)’.

Hab.. Mexico, Orizaba ! (Sumichrast).

Differs from H. albituberculatus in having the metathorax black at the base only, the

tubercles short and blunt, the prothorax white (except a black line above), &c.

21. Hemiteles albituberculatus. (Tab. X. fig. 25.)

Rufus; antennis, capite, pronoto, meso- metanotoque, nigris, annulo antennarum, clypeo, facie proparte,

prosterno, macula pronoti, maculis 3 mesonoti, scutello, spinis metathoracis, albis; alis hyalinis, stigmate

pallide testaceo. @.

Long. 9 millim.; terebra fere 2 millim.

Hab. PANaMa, Bugaba (Champion).

Antenne distinctly longer than the body, thickened towards the apex; the scape

white above in the middle. Head closely punctured; the orbits all round, the front

below the antenne broadly, the clypeus and labrum, white. Thorax finely punctured,

the pleure more strongly striated; base of the metanotum coarsely punctured, the

sides and apex coarsely striated and punctured. The thorax is black above (except the

above-mentioned white markings); the prothorax broadly behind, the edge of the

mesopleura in front, the suture at the metapleure, and the metanotum (except at the

apex and the sides down from the spiracles), black ; the mesopleura and a spot under the

hind wings dull yellowish white. Scutellum not much narrowed at the apex, which is

transverse, the base rounded. Tubercles long, acute; the part below them to near the

apex white. Petiole shining, impunctate; postpetiole aciculate, white at the apex.

The rest of the abdomen more opaque, more strongly aciculate; the sides from the third

segment more or less white; the two apical segments white above in the centre. Hind

cox punctured ; hind tarsi inclining to yellowish, the apices black. Outer nervure of

the areolet obsolete.

92. Hemiteles montezuma, (Tab. X. fig. 26.)

Rufus; facie, orbitis maculisque thoracis, albis; mesonoto nigro, albo maculatis; alis hyalinis, stigmate

pallide testaceo. 9.

Long. 7:5 millim.; terebra 1°5 millim.

Hab. Mexico, Orizaba (Bilimek).

BIOL. CENTR.-AMER., Hymenopt., February 1886. . 2LL

258 HYMENOPTERA.

Antenne as long as the body; the scape obscure white, marked with black in the

middle above ; flagellum black, broadly white in the centre. Head minutely punctured ;

the face obscure reddish, more or less tinged with white; the rest of the head white,

except the centre of the vertex and the posterior region broadly in the middle. Thorax

shining, almost impunctate. Metathorax at the sides and behind the upper transverse

keel rugose-striate ; the base impunctate, shining, the keel joined to the base by two

short carine, which form a narrow area; lower keel almost obsolete; tubercles broad.

Mesonotum black, with two white lines on each side at the base of the middle lobe and

two larger ones on the lateral lobes, bordering the middle lobe at the apex. Scutellum

white; the rest of the thorax pallid testaceous, more or less suffused with white.

Abdomen finely and closely punctured, the apical segments slightly bordered with

white; petiole shining, impunctate. Legs testaceous; the anterior and hind tarsi

whitish or whitish yellow; hind coxe finely punctured. Areolet higher than long,

angled on the lower side; the outer nervure pretty distinct.

23. Hemiteles servilis.

Hemiteles servilis, Cresson, Proc. Acad. Phil. 1873, p. 176( 2)’.

Hab. Mexico, Cordova! (Sumichrast).

2. Thorax entirely ferruginous. (Species 24 to 27.)

a. Head black, orbits white. (Species 24 and 25.)

24. Hemiteles ornaticeps. (Tab. X. fig. 24.)

Ferrugineus; antennis (annulo excepto) nigris; annulo flagello antennarum, orbitis, clypeo, tarsisque posticis. .

medio lete, albis; alis hyalinis, stigmate nigro. 9. ©

Long. 11 millim.; terebra 3 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

Antenne stout, bare, thickened towards the apex; the white ring broad. Head

finely rugose; the clypeus shining, impunctate; face semibuccate; the orbits white,

except in the centre behind; there is a triangular white mark below the antenne, and

the clypeus may be more or less white, or coloured like the rest of the head. Meso-

~ notum shining, aciculate, the three lobes well developed and with distinct sutures;

pleure longitudinally punctured, opaque. Scutellum smooth, shining, almost impunc-

tate; the sides carinate at the base; flat, much narrowed towards the apex. Meta-

thorax rugose-striate; the two transverse keels distinct, the lower keel forming a

semicircular curve in the middle; tubercles longer than broad, rather blunt at the

apex. Petiole aciculate, the sides keeled; postpetiole shining, impunctate; the rest of

the abdomen semivpaque, aciculate. Legs stout; hind coxe finely punctured; hind

tarsi white, black at the base and apex. Areolet higher than long, angled on the

lower side.

HEMITELES. 259

25. Hemiteles leucosoma.

Ferrugineus ; antennis capiteque nigris ; annulo antennarum, ore, prothoraceque antice, albis ; alis flavo-hyalinis,

medio apiceque fumatis, stigmate testaceo. g .

Long. 7 millim.; terebra 2 millim.

Hab. Guatemaua, San Gerénimo (Champion).

Antenne longish ; scape obscure brownish on the lower side. Head opaque, finely

punctured all over. Thorax finely punctured, the sides more or less striated. The

prosternum broadly, the tubercles below the tegule, and the metathoracic tubercles,

clear white. Sutures of the mesonotum obsolete. Metathorax more strongly punc-

tured than the mesothorax; the transverse keels distinct; tubercles stout, rounded at

the apex, scarcely twice as long as wide. Abdomen (including the petiole) finely and

closely punctured ; the apical segments yellowish at the apex. Coxe punctured. The

middle fascia in the wings is placed between the basal nervure and the base of the

stigma; the cloud at the apex is broader. Areolet higher than long, open at the apex.

b. Head ferruginous. (Species 26 and 27.)

26. Hemiteles mexicanus.

Pallide ferrugineus; antennis nigris, medio annulo albo, basi testacea; orbitis flavis; alis hyalinis, fusco

bifasciatis. 9.

Long. 7 millim.; terebra 2 millim.

Hab. Mexico (Sal/é).

Antenne longer than the body. Head and thorax very finely punctured, shining ;

scutellum aciculate ; metathorax, if anything, more strongly punctured; the two trans-

verse keels distinct, but very slightly bent upwards; tubercles absent. Abdomen finely

punctured ; petiole aciculate, yellowish at the base. Coxe finely punctured; the legs

more pallid in tint than the body, especially the anterior pair and the tarsi; the latter

blackish at the apex. The wings have a cloud at the basal nervure, and one at the

areolet, and the apex is faintly clouded. Areolet angled on the lower side; the rest

and the stigma torn off.

27. Hemiteles ruficornis.

Rufo-testaceus ; facie tarsisque pallidis; alis hyalinis, fusco bifasciatis. 3.

Long. 9 millim.

Hab. Guatemata, Zapote (Champion). |

Antenne stout, if anything, thickened towards the apex, covered with a microscopic

pile. Head minutely punctured; tips of the mandibles blackish; palpi longish, pale

testaceous. Thorax closely punctured, the pleure more strongly than on the top, and

more or less striated. Scutellum shining, impunctate. Metathorax closely punctured

all over; upper transverse keel thin but distinct ; tubercles and lower keel absent.

2 LL 2

260 HYMENOPTERA.

Mesonotal sutures indistinct. Pleural sutures black. First abdominal segment longish,

narrow, shining, impunctate; the other segments. finely punctured. The abdomen is

longish and rather narrow. Coxe punctured. Areolet 5-angular, the lower side sharply

angled, the latter nervures converging at the top, the outer nervure moderately distinct.

There is a distinct curved smoky cloud at the stigma, and a fainter and narrower one at

the basal nervure, and the apex is also clouded.

Subfam. PIMPLINA.

So far as our present knowledge goes, this subfamily is not very numerously represented

in Central America; although, on the other hand, one or two species of “ Pimpline”

appear to be the commonest of all the Ichneumons in that country. Some of the species’

are difficult of generic location, owing to the characters on which genera have hitherto

been grounded varying in such a way as to lead one to conclude that such characters

(é. g. the form of the abdomen) cannot be looked upon as of higher than specific rank.

RHYSSA.

Rhyssa, Gravenhorst, Ichn. Europ. ii. p. 260.

This genus contains the largest species of Pimpline. Our two species have the

apex of the clypeus truncated, not produced in the middle, and consequently agree with

Thalessa, Holmgren; but they have also the abdominal segments not incised, and thus

differ from the latter. Species of the genus (which, considering its wide distribution,

is not a large one) are found in most parts of the world, including New Zealand.

1. Rhyssa nigritarsis. (Tab. XI. fig. 3,2.)

Fulvo-testacea ; antennis, mesonoto (medio excepto), linea metanoti, abdomine supra tarsisque, nigris; alis

hyalinis, apice fumato. °°.

Long, 22 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 4000 feet (Champion).

Antenne nearly as long as the body, stout, gradually thickened towards the apex;

the base testaceous on the lower side. Head, if anything, broader than the mesothorax,

the face strongly punctured, the clypeus obscurely transversely striated ; with two deep

shining black depressions above the antenne, separated by a thin, rather sharp, parti-

tion ; vertex punctured in front laterally, behind the ocelli aciculated ; mandibles black

_ at the apex. Pronotum reaching to near the top of the head, rising rather perpendi- .

cularly in front; the mesonotum projects a little over it, and rises from the scutellum

to the apex, which has a distinct margin; the margin projects upwards in the centre,

and is depressed in the middle. Mesonotum transversely striated as usual, and with a

longitudinal furrow on each side on the apical three fourths ; scutellum shining, obscurely

RHYSSA. 261

punctured, broader than long, slightly narrower towards the apex. Pleure shining,

obscurely punctured, a longish longitudinal hollow in the middle. The mesonotum is

black, except laterally in front and down the centre. Scutellum testaceous, the sutures

black. There is a longish black mark under the fore wings; the base and apex of the

metanotum and a broad line down its centre are black. The longish curved spiracles are

bordered with black. Metanotum shining, impunctate; a curved transverse keel runs

across its centre, and an oblique one from the spiracles to the apex. Abdomen shining,

somewhat compressed, black above, the apex pilose; in the centre of the penultimate

segment is a somewhat triangular depression covered with a white membrane; the last

segment above forms a projecting thickly pilose lobe; on the lower side it projects more, »

and ends in two sharp horny processes which clasp the ovipositor. Ovipositor nearly

three times longer than the body, white at the apex. Legs shining; the hind coxe

black at the base on the lower side. Areolet large, triangular, receiving the recurrent

nervure in the middle.

2. Rhyssa carinifrons.

‘Testacea, nigro varia; antennis nigris, medio apiceque subtus testaceis ; pedibus rufo-testaceis ; basi et apice

coxarum posticarum, apice femorum, dimidio apicali tibiarum posticarum tarsisque, nigris ; alis hyalinis,

apice fumato. 9.

Long. 21 millim.

Hab. Nicaragua, Chontales (Janson); Panama (Boucard).

Antenne as long as the body; the base, the middle narrowly, and the apex (except

the extreme point), testaceous on the lower side. Face transversely punctured, the

vertex impunctate; a distinct keel (separating the antennal depressions) runs down

from the ocelli to a little below the base of the antenne; eyes margined, especially on

the inner side and above ; testaceous, the mandibles, the antennal depressions, a broad

transverse band on the vertex enclosing the ocelli, and the hind region, black. Thorax

formed as in R. nigritarsis, testaceous ; the mesonotum (except a broad mark in the

centre), the sutures, the base of the metanotum broadly, the sides of the prothorax in

front, a large mark on the mesopleura, and the metapleura close to the sternum, black.

In the centre of the metanotum two short keels run from the transverse keel, forming

a somewhat square area. Abdomen black; the ventral surface, a longish mark at the

base of the first segment in the centre, its apex and the apices of the other segments

broadly, testaceous. The middle coxe are black beneath; the hind coxe are black on

the lower side at the base, and beara longer black mark on the apex above, on the inner

side they are entirely black, except a small testaceous spot; the hind femora are infus-

cate towards the apex, and more than the apical half of the hind tibize is black; tarsi

black, testaceous in the middle. |

What appears to be the male (from Panama) differs from the specimen from Nicaragua

in having a broad white band on the antenne close to the apex, and the yellow on the head

202 HYMENOPTERA.

and body brighter in tint ; there is no black on the coxe, nor are the hind femora infuscate

towards the apex; the black on the hind tibiz is only on the outer side; and the

abdomen is broadly dilated laterally at the apex. »

EPIRHYSSA.

Epirhyssa, Cresson, Hymen. of Cuba, p. 39.

This genus agrees with Ahyssa in having the mesonotum transversely striated, but is

sufficiently distinguished from it otherwise by the fore wings having no areolet. Two

species have been described from Cuba, and one is known from Japan. The clypeus at.

the apex is incised, the incision, however, being very broad and truncated.

1. Epirhyssa mexicana. (Tab. XI. fig. 2.)

Epirhyssa mexicana, Cresson, Proc. Acad. Phil. 1873, p. 394 (?)’.

Hab. Mexico, Orizaba 1, Cordova! (Sumichrast); GuatemMaLa, San Gerdénimo (Cham-

pion). -

EPHIALTES.

- Ephialtes, Gravenhorst, Ichn. Europ. ii. p. 224.

There are not many species of this genus known; but it seems to be, if anything,

more numerously represented in the New than in the Old World.

1. Ephialtes atriceps.

Ephialtes atriceps, Cresson, Proc. Acad. Phil. 1878, p. 394 (?)?.

Hab. Mexico, Orizaba ! (Sumichrast).

2. Ephialtes annulicornis. (Tab. XI. fig. 1.)

Niger, flavo varius; annulo flagello antennarum pedibusque flavis; coxis posticis nigro maculatis; alis flavo

fumatis, stigmate flavo.

Long. 20 millim. ; terebra 30 millim.

Hab. GuaTEMAtA, San Isidro 1600 feet, San Gerdénimo (Champion) ; Panama, Volcan

de Chiriqui 2000 to 6000 feet (Champion).

Antenne stoutish, as long as the metathorax and abdomen together, of nearly equal

thickness throughout, covered with microscopic pile, the scape more or less testaceous,

Head shining, impunctate, shortly pilose; tips of the mandibles, a transverse line above

the antenne, a line across the vertex through the ocelli and the occiput, black. Thorax

yellowish testaceous; three longish black lines on the mesonotum ; the pleural sutures,

the apical half of the scutellum, the base of the metanotum, a triangular mark and an

oblique line down the side, black. Mesonotum obscurely punctured, the punctures

sometimes nearly obsolete; sutures deep. In the centre of the metanotum are two

furrows in the form of a triangle, of which the narrow end is at the base; this

EPHIALTES.—THERONIA. 263

triangle is either entirely, or lined laterally with, black. Petiole broad, depressed

in the centre and at the sides towards the apex; shining, impunctate. The rest of

the abdomen closely punctured ; the sides above projecting in the centre, and with a

broad transverse furrow at the apex; an oblique depression on each side of the base of

the second segment; the second and third segments are a little longer than broad, the

others broader than long. Legs yellowish testaceous, the four anterior trochanters and

the base of the femora more or less black; a broad line on the hind coxe on the outer

side, and the hind femora more or less lined with black above; the base and apex of

the hind tibizee sometimes black. Wings yellowish smoky, lighter posteriorly.

A very variable species. Some specimens are lighter coloured than what I have

described above, the thorax and especially the abdomen having very little black. Other

specimens have the abdominal segments black, narrowly edged with yellow behind. An

example from the Volcan de Chiriqui (4000 to 6000 feet) has the thorax almost entirely

black, except the mesopleura broadly in the middle and the mesosternum ; the hinder

coxe entirely black, and the middle coxe black behind, the femora, moreover, being

more broadly lined with black ; the head also bears more black than usual. ‘The extent

of the yellow ring on the antenne varies, and the sheaths of the ovipositor vary in

colour from black to piceous.

8. Ephialtes nigricans. (Tab. XI. fig. 5.)

Niger; femoribus, tibiisque anterioribus flavo-testaceis, tibiis posticis sordide testaceis ; alis fusco-hyalinis,

stigmate nigro. ©.

Long. 21 millim.

Hab. Guatemaua, San Gerdénimo (Champion).

Antenne thickish, shorter than the body. Face covered with longish white hair,

finely punctured ; a broad transverse depression above the antennz ; a short broad

furrow leads into this from the ocelli. Thorax shining, indistinctly punctured, sparsely

covered with white hair; metanotum broad in the middle, transversely striated, the

base punctured, the apex shining and impunctate. Abdomen closely punctured, less

strongly so towards the apex, the sides covered with longish white hair; a longish

irregular depression on either side of the basal segments; the other segments dilated

in the middle on either side. The ventral surface is obscure testaceous ; above, the

apical segments are more or less brownish. The ovipositor is longer than the body. The

anterior tarsi are testaceous in front, partly black behind. Areolet broadly triangular.

THERONIA.

Theronia, Holmgren, Gifv. 1859, p. 123; Sv. Ak. Handl. 1860, p. 16.

The species of this small genus are usually yellow or luteous in coloration. They

are found in Europe and North America, very few species, however, being known.

264 HYMENOPTERA.

ponchN N aA ENE

_ ‘1. Theronia montezuma.

Theronia montezuma, Cresson, Proc. Acad. Phil. 1873, p. 895 (¢ ?)’.

Hab. Mexico, Orizaba, Cordova (Sumichrast), Mirador! (Dr. Sartorius).

Said to be a common Mexican species.

2. Theronia lineata. (Tab. XI. fig. 4.)

Pimpla lineata, F. Smith, Descr. of New Species of Hymen. p. 280 (1879) °. .

_ Hab. Guatemata, San Gerénimo, Zapote, Panajachel 5000 feet ; Costa Rica, Irazu!

6000 to 7000 feet (Rogers); Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Allied to the preceding species, but differing in having the antenne nearly as long as

the body (these in 7. montezuma being described as “more than one half the length of

the body”), by the petiole not having ‘‘two longitudinal lines, divergent at the base

and confluent at the tip,” and by the abdominal segments being lined with black at the

base. Face obscurely punctured, the vertex sometimes obscure black in the middle;

tips of the mandibles black. Mesonotum sometimes punctured ; its sutures scarcely

indicated ; there are three black longitudinal lines on its surface, and sometimes it is

black along the edge of the pronotum. Scutellum covered with blackish erect hair ;

its basal fovea black. Metathorax shining, impunctate, its transverse keel well defined.

Petiole longer than the second segment, depressed along the sides above, so that the

central part is raised; and in the centre of the latter isa longitudinal depression; apex

of the second segment raised into a transverse border. Ovipositor about one half of |

the length of the abdomen. Areolet oblique, the lateral nervures united above or

nearly so. Antenne stout, microscopically pilose; scape yellowish beneath.

The species varies a little in size.

~~ 3. Theronia tolteca.

Theronia tolteca, Cresson, Proc. Acad. Phil. 1873, p. 396 (g 2)’.

Cryptus ferrugineus, F. Smith, Descr. of New Species of Hymen. p. 231 (1879) °.

Hab. Mexico, Orizaba 1 (Sumichrast), Valladolid in Yucatan (Gawmer); NicaRacua,

Chontales (Janson) ; Costa Rica, Cache ? (Rogers); Panama, Volcan de Chiriqui 2000 to-

3000 feet (Champion).

4, Theronia chiriquensis. (Tab. XI. fig. 6.)

Hab. Panama, Volcan de Chiriqui 2000 to 6000 feet (Champion).

In coloration identical with 7. tolteca (7. ¢. uniformly ferruginous above, the pleure:

and the base of the four anterior legs inclining to yellow, the flagellum and the hind

tarsi black), but, if anything, longer and stouter, and differing also as follows :—The

ovipositor is shorter, being scarcely longer than the petiole; the metanotum has,

THERONIA.—PIMPLA. 265

in addition to the transverse carina, an equally distinct carina going down each side

from a transverse keel at the extreme base; by the depression in the middle of the

metanotum at the base being longer and broader ; by the scutellum being more gibbous ;

by the petiole having distinct tubercles in the centre towards the middle, there being

also a longitudinal depression in the middle above. The wings are, as in 7’. ¢olteca,

hyaline,.smoky at the apex, the cloud being darkest. Antenne as long as the body.

————_—s-—»5. Theronia mellosa.

Theronia mellosa, Cresson, Proc. Acad. Phil. 1873, p. 396 (g¢ 2).

Hab. Mexico, Orizaba, Cordova! (Sumichrast).

~-- 6. Theronia tacubaya. |

Theronia tacubaya, Cresson, Proc. Acad. Phil. 1873, p. 397 (S$ ¢)’.

Hab. Mexico, Orizaba, Cordova ! (Sumichrast).

Said to be common in Mexico.

7. Theronia consimilis.

Pimpla consimilis, Cresson, Proc. Ent. Soc. Phil. iv. p. 37 (¢)’.

Theronia consimilis, Cresson, Proc. Acad. Phil. 1873, p. 397°.

Hab. Mexico, Orizaba, Cordova? (Sumichrast), Mirador ? (Dr. Sartorius).—ANTILLES,

Cuba}. a :

PIMPLA.

Pimpla, Fabricius, Syst. Piez. p. 112.

An extensive genus, common in all parts of the world.

1. Pimpla sedula. (Tab. XI. fig. 10, ¢.)

Nigro-cerulea, nitida ; alis fumatis. ¢.

Long. 13 millim.; terebra 4 millim.

Hab. Panama, Volcan de Chiriqui 8000 feet (Champion).

Smooth, shining, impunctate. Antenne as long asthe body; the third joint scarcely

so long as the two following joints united. Sides of the. metanotum obscurely trans-

versely striated, the middle transverse keel very distinct. Scutellum carinate at the

base. Base of the abdomen semiperpendicular, hollow in the centre; sides of the

segments depressed in the centre above. Areolet 4-angled, angled where the recurrent

nervure is received in the apical third. |

Allied to P. ceruleata, but larger and wanting the metallic blue and violet tinges,

and otherwise very different in having the body quite devoid of sculpture.

BIOL. CENTR.-AMER., Hymenopt., April 1886. 2 MM

266 HYMENOPTERA.

2. Pimpla ceruleata.

Pimpla ceruleata, Cresson, Proc. Acad. Phil. 1873, p. 897 (g 9)%.

Hab. Mexico, Orizaba, Cordova’ (Sumichrast).

————~- 8. Pimpla croceipes. (Tab. XI. fig. 12, 2.)

Pimpla croceipes, Cresson, Proc. Acad. Phil. 1873, p. 898 (3 ?)

Pimpla modesta, F. Smith, Descr. of New Species of Hymen. p. 229”.

Hab. Mexico, Orizaba! (Sumichrast) ; Guatemaua, San Gerénimo, Purula, Las Mer-

_ cedes 3000 feet (Champion); Costa Rica, Cache, Irazu? 6000 to 7000 feet (Rogers) ;

Panama, Volcan de Chiriqui 2000 to 6000 feet (Champion).

One of the commonest and most widely distributed of the Central- American Ichneu-

mons. It varies greatly in size.

——~—~ 4, Pimpla punicipes. (Tab. XI. fig. 16, 2.)

- Pimpla punicipes, Cresson, Proc. Acad. Phil. 1873, p. 898 (?)’.

Hab. Mexico, Ciudad in Durango 8100 feet (Forrer), Orizaba! (Sumichrast).

5. Pimpla montezuma.

Hab. Mexico, Chapultepec (Bilimeh).

Identical in coloration with P. punicipes (black, with the legs red and the tegule

white), but smaller and narrower; the antenne shorter, being scarcely longer than the

abdomen, while in P. punicipes they are nearly as long as the thorax and abdomen

together; the ovipositor much longer, being fully three fourths of the length of the

abdomen; the metanotum shining and impunctate; the petiole shining and scarcely

punctured, and with an oblique punctured depression on each side at the apex above ;

the abdomen longer, the segments not so strongly punctured, and with a wider

impunctate band at the apices; the wings have a darker tint, and have the stigma

livid testaceous. The pleure and head are punctured, but not strongly; palpi yellow;

sheath of the ovipositor densely pilose.

—~---~new 6, Pimpla feralis,

Pimpla feralis, Cresson, Proc. Acad. Phil. 1878, p. 399 (g) 7.

Hab. Mexico, Milpas 5900 feet (Forrer), Orizaba? (Sumichrast) ; GuaTEMALA, Volcan

de Atitlan 2500 to 3500 feet (Champion).

7. Pimpla mexicana.

Nigra; tegulis palpisque albis; scutello, pedibus maculaque pleurali rufis; tibiis posticis albis, apice nigris ;

tarsis posticis pallidis, nigro annulatis; alis subfumatis, stigmaté sordide testaceo, Q.

Long. 10 millim. ; terebra 1-5 millim.

PIMPLA. | 267

Hab. Mexico (Bilimek).

Antenne scarcely so long as the abdomen ; fuscous on the lower side (especially towards

the base of the flagellum) ; covered with a microscopic pile. Head finely punctured,

semiopaque. Mesonotum aciculate; pleura shining, impunctate; a broad oblique

reddish band. proceeding from the tegule to the hind cox. Metathorax finely punc-

tured, aciculate in the middle above. Abdomen closely and somewhat strongly punc-

tured, the apices of the segments shining. Sheaths of the ovipositor thick, densely

pilose, a little shorter than the tibie.

8. Pimpla crassicauda.

Pimpla crassicauda, Cresson, Proc. Acad. Phil. 1873, p. 899 (¢)’.

Hab. Mexico, Orizaba ! (Sumichrast).

9. Pimpla albipes.

Pimpla albipes, Cresson, Proc. Acad. Phil. 1873, p. 399 (?) °.

Hab. Mexico, Orizaba* (Sumichrast).

10. Pimpla coxata. (Pimpla coxator, Tab. XI. fig. 14, 2 .)

Pimpla coxata, F. Smith, Descr. of New Species of Hymen. p. 229 (1879) *.

Hab. Costa Rica, Irazu+ 6000 to 7000 feet (Rogers).

This is perhaps only a variety of P. albipes; it has, however, the hind coxe lined

with black on the inner and outer sides.

11. Pimpla albo-marginata. (Tab. XI. fig. 15, ¢ .)

Nigra ; labro, palpis, maculis thoracis, linea pronoti, tegulis, metathoracis apice, scutello, abdominis apice pedi-

pusque anticis, albis; pedibus posterioribus rufis; tibiis tarsisque posticis nigris ; alis hyalinis, stigmate

fusco. 9.

Long. 7°5 millim.; terebra 2 millim.

Hab. Mexico (Sallé).

Antenne nearly as long as the body, filiform ; fuscous on the lower side of the flagellum,

white on the lower side of the scape; third jointa little shorter than the two following

joints together. Head sparsely covered with whitish pile, very minutely punctured ;

face broadly projecting. Thorax scarcely punctured, shining; a broad line above the

prosternum, a broader one on the edge of the pronotum, the tegulee, the tubercles below

them, a somewhat pear-shaped mark on the: mesopleura, a longish oblique line along

‘the suture, the hind wings beneath, a roundish mark over and a little in front of the

middle cox, another over the hind coxe, the scutellum, the postscutellum, the apex

of the metathorax, and the apices of all the abdominal segments broadly, white. Over

the hind coxe the metapleure are reddish like the hind legs, the white mark being within

2 MM 2

268 HYMENOPTERA.

this red space. Petiole reddish at the sides and in the middle; the sides above at the

base white; the middle broadly black. Ovipositor piceous red. ‘The middle tibie

have an obscure white band above the middle; the hind pair are obscure reddish on the

outer side; the tips of the fore tarsi and the greater part of the middle tarsi ftiscous.

Wings slightly tinted with a smoky hue at the apex ; nervures fuscous; areolet oblique,

outer nervure pale; the recurrent nervure received beyond the middle in an obtuse

angle.

12. Pimpla semisanguinea.

Pimpla semisanguinea, Cresson, Proc. Acad. Phil. 1873, p. 400 (?)’.

Hab. Mexico, Orizaba’ (Sumichrast).

13. Pimpla sumichrasti.

Pimpla sumichrasti, Cresson, Proc. Acad. Phil. 1873, p. 400 (¢)'.

Hab. Mexico, Cordova’ (Sumichrast).

14. Pimpla azteca.

Pimpla azteca, Cresson, Proc. Acad. Phil. 1873, p. 401 (¢)’.

Hab. Muxico, Orizaba’* (Sumichrast).

15. Pimpla marginipennis.

Pimpla marginipennis, Cresson, Proc. Acad. Phil. 1873, p. 401 (¢ )’.

Hab. Mexico, Cordova’ (Sumichrast).

16. Pimpla zonata.

Pimpla zonata, Cresson, Proc. Acad. Phil. 1873, p. 401°.

Hab. Mexico, Orizaba* (Sumichrast).

—__————_ 17. Pimpla zapoteca.

Pimpla zapoteca, Cresson, Proc. Acad. Phil. 1873, p. 402 (¢ ?)’

Hab. Mexico, Orizaba! (Sumichrast).

~———— 18. Pimpla(?) chichimeca.

Pimpla (?) chichimeca, Cresson, Proc. Acad. Phil. 1878, p. 402 (¢)’.

Hab. Mexico, Orizaba! (Sumichrast).

19. Pimpla ichneumoniformis.

Pimpla ichneumoniformis, Cresson, Proc. Acad. Phil. 1873, p. 403 ( ¢)’.

Hab. Mexico, Orizaba! (Sumichrast).

PIMPLA. 269

; “ST |

20. Pimpla xanthostigma. (Tab. 3e%. fig. 9, 2.)

Nigra, flagello antennarum testaceo; alis flavo fumatis, stigmate flavo. 9.

Long. 16 millim.; terebra 5 millim.

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Antenne longer than the body, the third joint nearly as long as the two succeeding

joints together. Head closely punctured; vertex broadly depressed in front of the

ocelli, Pro- and mesonotum opaque, very closely punctured; pleure and scutellum

more shining and with the punctures more widely set apart. Metapleura coarsely

rugose ; metanotum coarsely transversely striated. First abdominal segment more than

double as long as wide, longitudinally punctured, the base and apex shining, impunc-

tate, the base hollowed in the centre; there is a distinct shining tubercle on either

side of the middle of the segment. The other segments punctured, the punctuation

becoming finer towards the apex ; the apices shining, almost impunctate. The anterior

tibie and femora are testaceous in front; the tibie reddish, the stiff pile with which

they are covered being also reddish; spurs reddish. Areolet slightly pedunculate

above ; the recurrent nervure received in the apical third.

The wings vary in tint, the hind portion being usually lighter than the front. The

face and the sides of the metanotum and of the basal segment of the abdomen are

sometimes brownish.

21. Pimpla cressoni. L | |

Pimpla braconoides, Cresson, Proc. Acad. Phil. 1873, p. 404 (?)’ (nec Smith).

Hab. Mexico, Orizaba! (Sumichrast).

22. Pimpla atriceps.

Pimpla atriceps, Cresson, Proc. Acad. Phil. 1878, p. 404 (2)’.

Hab. Mexico, Cordova! (Sumichrast).

23. Pimpla argentifrons. (Tab. XI. fig. 17, 2.)

Nigra, scutello tegulisque albis; abdomine pedibusque rufis ; coxis anterioribus palpisque flavis ; alis hyalinis,

stigmate testaceo. 2.

Long. 14-16 millim.; terebra 4—5 millim.

Hab. Guatemata, Mirandilla 1700 feet (Champion); Panama (Boucard).

Antenne thin, longer than the body. Head and metathorax covered with a silvery

pubescence ; face closely punctured, the centre not so strongly ; vertex shining, impunc-

tate; clypeus and labrum more or less white. Pro- and mesothorax semiopaque,

obscurely aciculated. Metapleura somewhat strongly punctured; basal half of the

metanotum strongly transversely striated, the apex shining, impunctate, and with rather

an oblique slope, without distinct transverse keel. Basal segment of the abdomen

broad, about one half longer than wide; the basal half hollowed, shining, almost

270 : HYMENOPTERA.

impunctate; the apical half strongly punctured, except at the apex, which is shining

and impunctate; the rest of the abdomen closely punctured, the punctuation finer

towards the apex. Tips of the tarsi blackish; coxz shining, impunctate. Areolet

sharply angled where the recurrent nervure is received a little beyond the middle.

EPIMECIS.

Epimecis, Brullé, Hist. Nat. Ins. Hymén. iv. p. 112.

The chief distinctive characters of this genus consist in the greatly elongated pro-

thorax, the head being narrower behind so as to fit into it, the head here being wider

than the collar and provided with a distinct raised border; the eyes are large, lateral,

projecting, incised at the antenne, above almost touching the ocelli, below nearly

reaching to the mandibles; the ocelli large, oval, and placed on the extreme summit

of the head; the mesonotal sutures moderately deep; the abdomen much more than

double the length of the thorax, narrow, becoming gradually wider towards the apex,

with a depression on each side of the first four segments; there is no areolet, and the

spurs are simple.

The elongated collar, the eyes reaching to the base of the mandibles, and the exist-

ence of depressions at the sides of the abdominal segments sufficiently distinguish this

genus from Pimpla.

1. Epimecis (?) thoracica. |

Epimecis (?) thoracicus, Cresson, Proc. Acad. Phil. 1878, p- 395 5 ( 9)

Hab. Mexico, Orizaba! (Sumichrast).

2. Epimecis tibialis. Tab. XII. fig. 1,9.)

Lutea; antennis, capite, femoribus posticis, tibiarum posticarum dimidio apicali, apice tarsorum abdominisque

apice, nigris ; alis flavo-hyalinis, nigro fasciatis. 9 et ¢.

Long. 21 millim.; terebra 8 millim.

Hab. Mexico, Valladolid in Yucatan (Gaumer); GuateMata, San Geronimo (Cham-

pion); Panama, David in Chiriqui (Champion).

Antenne as long as the body, inclining to brownish on the lower side, covered with

a microscopic pile; scape with longish hair; the joints a little produced at the apices ;

third joint nearly one fourth longer than the fourth. Head shining, impunctate ;

face bluntly keeled; clypeus projecting and clearly separated; palpi dark testaceous.

Thorax shining, impunctate; scutellum gibbous; an indistinct furrow in the centre of

the basal half of the metathorax. Abdomen shining, impunctate; a tubercle at the

base of the four basal segments; apex pilose, punctured laterally; cerci longish, hairy.

Legs densely pilose. In the fore wings the middle cloud ends at the‘base of the |

stigma, and that in the hind wings is immediately opposite it; the apical cloud in the

fore wings commences a little beyond the recurrent nervure.

EPIMECIS. —GLYPTA. 271

E. fasciata, Brullé, from Brazil, is very like the present species, and may be a

variety of it.

3. Epimecis mexicana.

Lutea; antennis, capite (ore excepto) pedibus posticis abdominisque apice lete, nigris; alis flavo-hyalinis,

nigro fasciatis, stigmate flavo. 9.

Long. 12 millim.; terebra 5 millim.

Hab. Mexico (Bilimesk).

. Differs from £. tibialis in being smaller, and in the apex of the abdomen being more

widely, and in the hind legs being entirely, black.

GLYPTA.

Glypta, Gravenhorst, Ichn. Europ. iii. p. 4.

A well-marked genus of wide distribution.

1. Glypta longula.

Glypta longula, Cresson, Proc. Acad. Phil. 1873, p. 405 (9)

Hab. Mexico, Orizaba! (Sumichrast).

2. Glypta rufomarginata. (Tab. XI. fig. 18,2.)

Nigra; thorace rufo, ore, linea pronoti, tegulis, postscutello pedibusque, albis; antennis nigris, subtus fuscis ;

alis hyalinis, stigmate fusco. 2.

Long. 8 millim.; terebra 6 millim.

Hab. Mexico, Chapultepec (Bilimek).

Antenne scarcely so long as the body, moderately stout, the joints closely united

together. Mesonotal sutures not very distinct ; edge of the pronotum produced into a

tubercle in front. Pronotum edged above and beneath with white; a blackish mark

dilated laterally (posteriorly) in the middle, the rest reddish; mesothorax red, except

the sutures and the scutellar region which are black, and a large yellow mark on the

mesopleura; the sternum also inclining to yellow; metanotum black, except laterally,

with a transverse keel across just beyond the middle, and another immediately behind

the extreme apex. Abdomen closely punctured ; the oblique lines broad and moderately

deep; the edges of the segments raised; the ventral surface and the edges of the

segments (the third and fourth broadly) reddish. Ovipositor black, pilose, longer

than the abdomen. The hind coxe incline to fulvous; the extreme apices of the tibia,

and the tarsal joints narrowly at the apex, black.

3. Glypta albopicta.

Glypta albopicta, Cresson, Proc. Acad. Phil. 1878, p. 405 (¢)".

Hab. Mexico, Orizaba! (Sumichrast).

272 . HYMENOPTERA.

4. Glypta decolorata.

Glypta decolorata, Cresson, Proc. Acad. Phil. 1873, p. 406 (3).

Hab. Mexico, Orizaba! (Sumichrast).

ODONTOPIMPLA.

In the form of the body this genus agrees with Pimpla, but differs from it in having

the hind femora thickened and with a tooth on the middle beneath; the tibiz are

stouter, the anterior pair being curved and slightly dilated at the apical half, and the

posterior pair curved at the base; the tibial spurs are very short and thick; the tarsi

are much shorter than the tibie, and the antenne are stouter; and the clypeus is

incised.

The petiole is deeply excavated on the basal half; on the other abdominal segments

there is a deep curved transverse depression, there being also a longitudinal one run-

ning into the transverse furrow on the second segment; the depression on the sixth

segment is interrupted in the middle; the seventh segment is broadly, but not deeply,

depressed in the centre, and there is an obscure, shallow, narrow furrow on the eighth.

The ventral segment, the neuration, and the form of the head as in Pimpla.

The structure of the femora is not unlike what we have in Odontomerus, but in that

genus the form of the head and abdomen is different, and there is no areolet.

1. Odontopimpla pulcherrima. (Tab. XI. fig. 11, 2.)

Pimpla (?) pulcherrima, Cresson, Proc. Acad. Phil. 1873, p. 404 (¢ )’.

Pimpla levigata, F. Smith, Descr. of New Species of Hymen. p. 229 (1879)’.

Hab. Mexico, Cordova! (Sumichrast) ; Costa Rica, Cache? (Rogers).

LYCORINA.

Lycorina, Holmgren, Sv. Ak. Handl. 1860, p. 48; Cresson, Proc. Acad. Phil. 1873, p. 406.

1. Lycorina (?) apicalis.

Lycorina (?) apicalis, Cresson, Proc. Acad. Phil. 1873, p. 407 (¢ )’.

Hab. Mexico, Cordova! (Sumichrast). |

MENISCUS.

Meniscus, Schiddte in Guérin’s Mag. Zool. 1839, Ins. t. 6-10, p. 10.

1. Meniscus crassitarsus.

Meniscus cressitarsus, Cresson, Proc. Acad. Phil. 1873, p. 409 (?)*.

Hab. Mexico, Orizaba! (Sumichrast).

MENISCUS,.—LISSONOTA. . 273

2. Meniscus mexicanus.

Meniscus mexicanus, Cresson, Proc. Acad. Phil. 1873, p. 410 ( @ )’.

Hab. Mexico, Cordova} (Swmichrast).

3. Meniscus (?) alternatus.

Meniscus (?) alternatus, Cresson, Proc. Acad. Phil. 1873, p. 410 ( 3)’.

Hab. Muxtco, Cordova! (Sumichrast).

— 4, Meniscus (?) orbitalis.

Meniscus? orbitalis, Cresson, Proc. Acad. Phil. 1873, p. 411 (¢)’.

Hab. Mexico, Cordova! (Sumichrast).

LISSONOTA.

Lissonota, Gravenhorst, Ichn. Europ. iii. p. 30 (1829).

The species I have described here are better placed in Lissonota than in any other

genus. ‘The only point in which they differ from the typical species is that the clypeus

is slightly incised. None of the species have an areolet, but the absence of this is not

looked upon as of generic value.

1. Lissonota albispina. (Tab. XI. fig. 19.)

Nigra; annulo antennarum, orbitis anticis tarsisque posticis, albis; alis fere hyalinis, stigmate nigro. 9.

Long. 12-13 millim.

Hab. Panama, Volcan de Chiriqui 200 to 600 feet (Champron).

Very closely and uniformly punctured all over, the legs more closely and finely

punctured than the body. Antenne as long as the body, the white band interrupted

on the lower side. Head projecting in the middle in front, the projection depressed at

the base and apex; clypeus projecting, more strongly punctured than the face ; labrum,

and the apical joints of the palpi, white. Mesonotum without sutures; metanotum

longish, having a gradual slope to the apex, with a distinct longitudinal keel on the

outer side of the spiracles, an indistinct transverse one not far from the apex, and a

more distinct one immediately before the apex. Pleure covered with short silvery

pubescence. Abdomen carinate on the ventral. surface at the base, the first segment

the longest ; the apices of the first and second segments, the base of the third narrowly,

and the apical segments at the apex more broadly, white. Basal three fourths of the

metatarsus, and the apices of the hind tarsi, black. |

9. Lissonota leucozona.

Nigra ; ore, facie, orbitis, tegulis, sterno, pleuris pro parte, lineis 2 mesonoti, scutello, postscutello, metanoto

laterali, abdominis segmentis apice, coxis anterioribus, tibiarum posticarum dimidio basali medioque tarso- .

rum posticorum, albis; alis hyalinis, stigmate nigro. 9.

Long. 11 millim. :

BIOL. CENTR.-AMER., Hymenopt., Apri/ 1886. 2 NN

274 . HYMENOPTERA.

Hab. Guatemaua, El Tumbador. 2500 feet (Champion).

Finely and closely punctured all over, the abdomen more shining and less strongly

punctured than the thorax. Face with a projecting longish tubercle in the centre; a

fine longitudinal keel leading down from the ocelli to near the base of the antenne ;

clypeus projecting, convex, clearly separated behind by a wide and deep furrow; its

apex incised in the middle (but not broadly), the sides oblique. Behind the head is

black, except at the orbits; the middle of the vertex to the antenne (prolonged as a

narrow stripe down the face to the clypeus) is also black; tips of the mandibles black.

The prothorax broadly in front, the greater part of the mesopleure and sternum, the

tubercles below the tegule, a large mark on the metapleure, two narrow lines on the

mesonotum, the scutellum, the postscutellum, and two large longish marks on the sides

of the metanotum, white. Base of the petiole broadly, its apex and the bases and

apices of the other segments more narrowly, white. Anterior legs white behind, the

femora lined with black above, the tibiz and tarsi fuscous behind; middle coxe white,

with a large black mark behind, the femora and tibie black behind, white in front, the

tarsi almost entirely black; hind coxe black, white at the apex and with a white mark

at the base behind, the femora entirely black, the tibia black, the basal half white 1 in

front and slightly so behind, the tarsi white, except at the base and apex.

| 3. Lissonota erythropoda.

Nigra; annulo antennarum, ore, facie, orbitis, pleuris, tegulis, lineis 2 mesonoti, scutello postscutelloque, albis ,

abdomine pedibusque rufis; alis hyalinis, stigmate testaceo. 2.

Long. 12 millim.; terebra 10 millim.

Hab. Guatemaa, Duefias (Champion).

Very finely and closely punctured. Head whitish yellow, except behind (orbits.

excepted) and the centre of the vertex; structurally as in Z. leucozona. Prothorax in

front, the mesopleure (except at the sides and immediately beneath the wings), the

tegule, the tubercles beneath them, the sternum, a large mark on the metapleura, two

narrow lines on the mesonotum, the scutellum, the postscutellum, the metanotum

laterally at the base and apex, and the abdominal segments narrowly at the apex, white.

Metanotum laterally reddish ; the transverse keel more distinct than in the other species

of the genus, and a little more sharply upturned in the middle. Four anterior coxe

more or less yellowish ; hind tarsi yellowish, black at the base and apex.

4, Lissonota pulchra.

Nigra; annulo antennarum, facie, ore, orbitis, prosterno, mesosterno, tegulis, macula mesonoti, seutello,. post-

scutello maculaque metanoti, albis; pedibus rufis, tarsis posticis nigris, medio lete albis; alis hyalinis,

stigmate griseo.

Long. 10 millim.

Hab. MeExtco (Sallé).

Face finely punctured ; white, except a broad black line from the antenne to the base

LISSONOTA.—PHYTODIETUS. 275

of the clypeus; front depressed above the antenne, a keel in the centre of the depres-

sion. Thorax opaque, very closely and finely punctured; the prosternum, the meso-

sternum, a squarish large mark above it, the tegule, the tubercle below them, a large

mark in the centre of the mesonotum, the scutellum, a large mark on the metapleure,

a transverse line across the apical third of the metanotum (prolonged upwards on each

side and ending in an oblong dot), white. Abdomen black, opaque, finely punctured; the

base of the petiole and of the remaining segments, the sides also of the three apical ones

broadly, and the ventral surface, reddish ; the apices of the segments yellow, the yellow

bordered with red on the apical segment. The four anterior tarsi are fuscous ; the

hind pair black at the base and apex, the intermediate part white; the apices of the

hind tibie, and the spurs, black ; fore coxee, and the base of the middle pair, yellow ;

hind coxe closely punctured. —

Differs from L. erythropoda in being longer ; in having a mark (not two lines) on the

mesonotum ; in having only a small mark on the mesopleura; in having a transverse

yellow line on the metanotum, &c.

5. Lissonota leucopoda. (Tab. XI. fig. 20.)

Nigra; facie, orbitis anticis, lineis pronoti, pleuris, sterno pedibusque, albis ; mesonoto cum tegulis pleurisque

supra, rufis; alis hyalinis. 2 et.¢.

Long. 8°5 millim.; terebra 6 millim.

Hab. Panama, Bugaba (Champion).

Head broader than the thorax, shining, impunctate ; white, except behind (orbits

excepted) and at the middle of the vertex. Thorax shining, pilose (especially on

the metathorax); mesonotum bearing clearly separated punctures ; metathorax more

closely and strongly punctured, and with two distinct transverse keels, in front of the

keels almost impunctate. Abdomen finely and closely punctured. Prothorax black,

except on the lower side; lower half of the mesopleure, and nearly the whole of the

metapleure, white; upper half of the mesopleure red. Mesonotum red, except at its

junction with the pronotum, where it is yellow; sides of the scutellum, and the post-

scutellum, yellow. Metanotum black. Apices of the abdominal segments white ;

sheaths of the ovipositor black, pilose. Antenne nearly as long as the body, pilose.

Apices of the hind tibiz, and of the tarsi, black.

Wide epee Cy.

PHYTODIETUS.

Phytodietus, Gravenhorst, Ichn. Europ. ii. p. 929.

A not uncommon genus in the temperate regions of the globe, and probably of

wide distribution. I have placed here the species which Cresson has described under

Lampronota (=Lissonota): they certainly do not belong either to Lampronota (= Cylio-

ceria, Schiddte) or Lissonota (which name is sunk by American authors in favour of

Lampronota, Curtis), as they all have pectinated claws.

2 NN 2

276 HYMENOPTERA.

1. Phytodietus cressoni.

Ferrugineus ; flagello antennarum, metanoto pro parte, macula magna coxarum posticarum medioque abdo-

minis segmentis 1™° et 2°, nigris; alis hyalinis, stigmate sordide testaceo. 2.

Long. 11 milllim.; terebra 9 millim.

Hab. Paxama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Closely punctured, the apical segments of the abdomen very slightly; metanotum

with a transverse keel. Orbits, the mandibles (except at the apex), and a narrow ring on

the antenne, yellow; centre of the mesonotum obscurely, the mesopleure in front, the |

- metanotum (except a large space in the centre at the base), the first and second segments

of the abdomen broadly in the middle, the two anterior coxe broadly at the base, and

the posterior cox entirely behind, black. The hind femora are more or less black

above and beneath ; tips of the tarsi black. Areolet oblique, triangular above, angled

beneath where the recurrent nervure is received before the middle.

2. Phytodietus guatemalensis. (Tab. XI. fig. 21.)

Ferrugineus ; flagello antennarum nigro, annulo albo; alis flavo-hyalinis, stigmate sordide testaceo. 9.

Long. 13 millim.; terebra 11 millim.

Hab. Guatemata, San Gerdénimo, Duefias (Champion); Panama, Volcan de Chiriqui

4000 to 6000 feet (Champion).

Closely and finely punctured all over; clypeus with larger and more distinctly

separated punctures; abdomen not so strongly punctured as the thorax, especially

towards the apex. ‘Tubercle below the antenne large, narrower at the apex. Orbits

more or less yellowish ; mandibles yellowish, black at the tips. Scutellum narrower

towards the apex, with distinct keels at the base; metanotum with a transverse keel

near the apex. Areolet oblique, triangular above, not much angled on the lower side.

> 3. Phytodietus gracilicornis. .

Phytodietus gracilicornis, Cresson, Proc. Acad. Phil. 1873, p. 411 (¢ 92)".

Hab. Mexico, Orizaba, Cordova! (Sumichrast).

4. Phytodietus mexicanus. |

Phytodietus mexicanus, Cresson, Proc. Acad. Phil. 1873, p. 412 (¢)'.

Hab. Mxxico, Cordova! (Sumichrast).

5. Phytodietus orizabensis.

Lampronota mexicana, Cresson, Proc. Acad. Phil. 1878, p. 407 (¢ 9)h

Hab. Mexico, Orizaba! (Sumichrast).

6. Phytodietus aztecus.

Lampronota azteca, Cresson, Proc. Acad. Phil. 1873, p. 408 (¢ )’.

Hab. Mexico, Orizaba! (Sumichrast).

PHYTODIETUS.—LABENA. _ 277

7. Phytodietus: bellus.

Lampronota bella, Cresson, Proc. Acad. Phil. 1873, p. 408".

Hab. Mexico, Cordova! (Sumichrast).

8. Phytodietus orbitalis.

Lampronota orbitalis, Cresson, Proc. Acad. Phil. 1873, p. 408 (@)*.

Hab. Mextoo, Orizaba! (Swmichrast).

9. Phytodietus (?) jucunda.

Lampronota (?) jucunda, Cresson, Proc. Acad. Phil. 1873, p- 409 (¢)*.

Hab. Muxtco, Orizaba! (Sumichrast).

AGATHILLA.

Agathilla, Westwood, Tijd. v. Ent. xxv. p. 28.

Judging from the figure and description, I conclude that this genus belongs to the

“‘Pimplides,” rather than to the “ Ichneumones adsciti,” among which it is placed by

Westwood. The single described species is from Mexico.

1. Agathilla fulvo-picta.

Agathilla fulvo-picta, Westwood, Tijd. v. Ent. xxv. p. 24, t. bd. figg. 1-7".

Hab. Mexico (Coffin).

Subfam. XORIDINZEE.

LABENA.

Mesochorus, Brullé, Nat. Hist. Ins. Hymén. iv. p. 249 (nec Grav.).

Labena, Cresson, Proc. Ent. Soc. Phil. 1864, p. 399 ; Walsh, Trans. St. Louis Acad. Science, 18738,

p. 162.

A well-marked genus, containing but few species, and only found in North America

and Mexico.

1. Labena gloriosa.

Labena gloriosa, Cresson, Proc. Acad. Phil. 1873, p. 412 (?)*.

Hab. Mexico, Mirador! (Dr. Sartorius).

—— 2. Labena grallator.

| Cryptus graliator, Say, Bost. Journ. Nat. Hist. i. p. 236°; Leconte, Complete Writings of Thomas

Say, 1. p. 692.

Labena grallator, Cresson, Proc. Ent. Soc. Phil. 1864, p. 400 (g ?)°; Walsh, Trans. St. Louis

Acad. Science, 1873, p. 162°. |

Mesochorus fuscipennis, Brullé, Hist. Nat. Ins. Hymén. iv. p. 250.

278 HYMENOPTERA.

Hab. Norru America, United States 23, Indiana '\—Mexico, Northern Sonora (Mor-

rison). |

This fine large species has been bred from hickory stems infested by the beetle

Cerasphorus cinctus, Fabr. |

Subfam. TRY PHONINA.

This division of Ichneumonide is of comparative rarity in Central America, only

three species being known from south of Mexico. In the northern parts of Mexico.

they will, no doubt, be found to be much more numerously represented.

METOPIUS.

Metopius, Panzer, Krit. Revis. ii. p. 78; Cresson, Proc. Acad. Phil. 1873, p: 393.

A very distinct genus, of wide distribution in the New and Old Worlds, but appa-

rently not containing many species.

1. Metopius femoratus. (Tab. XI. fig. 23.)

Metopius femoratus, Cresson, Proc. Acad. Phil. 1873, p. 393 (¢)°.

Hab. Mexico, Orizaba (Bilimek), Cordova 1 (Sumichrast).

2. Metopius scutifrons.

Metopius scutifrons, Cresson, Proc. Acad. Phil. 1873, p. 393 (3) °.

Hab. Mexico, Orizaba ! (Sumichrast).

EXOCHOIDES.

Exochoides, Cresson, Trans. Am. Ent. Soc. 1868, p. 37.

This genus is at present only known from Mexico. It differs from Exochus in having

the face flat, the legs less robust, and the abdomen subpetiolate. .

1. Exochoides mexicana.

Exochoides mexicana, Cresson, Trans. Am. Ent. Soc. 1868, p. 87 (3) ’.

Hab. Mexico, Hacienda del Potrero, near Cordova! (Sumichrast).

2. Exochoides concinna. .

Exochoides concinna, Cresson, Trans, Am. Ent. Soc. 1868, p. 37 (3) '-

flab. Mexico, Hacienda del Potrero, near Cordova! (Sumichrast).

EXOCHUS. a | | 279

EXOCHUS.

Ezxochus, Gravenhorst, Ichn. Europ. ii. p. 828; Cresson, Proc. Acad. Phil. 1878, p. 38.

A genus apparently of no great extent, and chiefly known from the Palearctic and

Nearctic Regions.

A. Areolet wanting.

1. Exochus stramineipes. (Tab. XI. fig. 7.)

Niger, nitidus; ore, facie, orbitis, palpis, tegulis, linea pronoti, mesopleuralis medio pedibusque, stramineis ;

coxis, trochanteribus femorumque posticorum basi, tibiarum posticarum basi tarsisque posterioribus, nigris ;

alis fere hyalinis, nervis nigris. ¢.

Long. 8 millim.

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Smooth, shining, almost impunctate, the abdomen at the apex sparsely pilose.

Antenne as long as the abdomen and metathorax together, moderately stout; the first

joint large, somewhat pyriform, yellow on the lower side. Vertex raised in the centre,

the ocelli projecting ; orbits broadly yellow, except in the middle behind. Mesonotum

flat, bearing shallow punctures; scutellum impunctate; the fovea at its base deep.

-Metanotum bearing two carine in the centre and one on either side at the edge; this

latter bearing a short tubercle where the metanotum slopes down; there is another

keel along the pleural region above the middle. Petiole depressed above at the basal

half, the depression bordered by fine keels, the remaining segments without keels.

Legs stout; hind coxe, the femora (especially), and tibiz, thickened. Wings obscure

smoky ; areolet wanting. |

2. Exochus puncticeps.

Niger; facie, palpis, linea pronoti, apice scutelli, postscutello pedibusque, flavo-rufis; alis hyalinis, stigmate

_ testaceo. o. . _

Long. 7 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne a little longer than the abdomen, brownish beneath, densely pilose; third

joint about one fourth. longer than those succeeding, the two basal joints subequal.

Face broadly and roundly projecting, closely pilose, strongly punctured from the

-antenne to the apex of the scutellum, which is shining and impunctate ; vertex shining,

depressed above the antenne; the orbits are narrowly lined with. yellow above the

-antenne. Mesonotum closely punctured, scarcely shining; scutellum impunctate, its

apex and the sides broadly to near the base, yellow; pleure and sternum shining, the

pleure in front obscurely punctured. Metanotum opaque, aciculate, except the centre

and apex; there are eight aree; supramedian area longer than broad, the apex pro-

duced into an angle in the middle; metapleure shining, impunctate; the metanotum

280 HYMENOPTERA.

bears longish, rather dense, hair. Abdomen closely punctured, pilose; petiole depressed

in the centre at the base; two stout, slightly converging, keels run from the base to

near the middle; genital organs projecting, fuscous. Legs stout; the femora and hind

tibie thickened; the coxe and tarsi of a lighter tint than the femora and tibie.

Obs. It is possible that what I have called “ flavo-rufo” may be a pure yellow (which

‘is nearly the colour of the line on the pronotum), the reddish tint being discoloration,

perhaps caused by cyanide of potassium.

3. Exochus tricarinatus.

Exochus tricarinatus, Cresson, Trans. Am. Ent. Soc. 1868, p. 38 (3); Proc. Acad. Phil. 1878,

p- 392°.

Hab. Mexico, Hacienda del Potrero, near Cordova ! (Sumichrast).

4, Exochus pulchripes.

_Exochus pulchripes, Cresson, Trans. Am. Ent. Soc. 1868, p- 88(¢)*; Proc. Acad. Phil. 1873,

p. 893°.

Hab. Mexico, Hacienda del Potrero, near Cordova}, Orizaba ? (Sumichrast).

5. Exochus melanocephalus. © |

Rufo-testaceus, capite abdominisque apice nigris; facie oreque rufis; alis hyalinis, nervis nigris. ¢.

Long. 6 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne moderately stout; blackish, testaceous at the basal fourth; basal joint of

the scape cylindrical, stout, scarcely one half longer than thick; first joint of the

flagellum nearly double the length of the fourth. Face finely punctured; vertex

shining; a sharp keel runs down from the ocelli to the antenne, the space on each

side. of it being slightly excavated. Thorax shining; metanotum slightly aciculate ;

two keels run down its sides; beyond what is enclosed by these two keels there are no

aree. Abdomen shining, impunctate, thickened towards the apex; the ventral surface

pallid testaceous. Legs (especially the femora) stout, pallid testaceous at the base ;

the tarsi paler in tint than the tibie, their apices fuscous. Areolet angled on the lower

side where the recurrent nervure is received beyond the middle.

B. Areolet present.

6. Exochus ceruleiventris.

_ Exochus ceruliventris, Cresson, Trans. Am. Ent. Soc. 1868, p. 88(¢)'; Proc. Acad. Phil. 1878,

p. 3927. |

Hab. Mexico, Hacienda del Potrero, near Cordova !, Orizaba? (Sumichrast).

_ BASSUS.—MESOLEPTUS. 281

BASSUS.

Bassus, Fabricius, Syst. Piez. p. 93.

This genus is numerously represented in the Palearctic and, to a less extent, in the

Nearctic Region. In our country it has only been met with in the mountains of

North Mexico, where the fauna is of a more mixed nature than further south, 7. e.

there is a considerable mixture of northern species. |

1. Bassus frontalis. (Tab. XI. fig. 8.)

Bassus frontalis, Cresson, Trans. Am. Ent. Soc. 1868, p. 111 (¢)*.

Hab. Norte America, United States}.—Muxico, Milpas 5900 feet (Forrer).

The Mexican specimen is a male, and .it does not materially differ in coloration from

the female.

. MESOLEPTUS.

Mesoleptus, Gravenhorst, Ichn. Europ. ii. p. 3; Cresson, Trans. Am. Ent. Soc. i. p. 33 (1868).

An extensive genus of wide distribution.

1. Mesoleptus calidus.

Mesoleptus calidus, Cresson, Trans. Am. Ent. Soc. 1868, p. 33 (g)*; Proc. Acad. Phil. 1873, p. 390.

Hab. Mexico, Hacienda del Potrero, near Cordova! (Suwmichrast).

2. Mesoleptus melleus.

Mesoleptus melleus, Cresson, Trans. Am. Ent. Soc. 1868, p.34(¢)*; Proc. Acad. Phil. 18738, p. 390.

Hab. Mexico, Hacienda del Potrero, near Cordova! (Sumichrast).

3. Mesoleptus aztecus.

Mesoleptus aztecus, Cresson, Proc. Acad. Phil. 1873, p. 390 (3)’.

Hab. Muxtico, Orizaba! (Sumichrast).

4, Mesoleptus mexicanus. (Tab. XI. fig. 22.)

Flavus; flagello antennarum, mesonoto (lineis 2 flavis exceptis) abdominisque apice late, nigris; alis flavo-

hyalinis, stigmate testaceo. ¢. ,

Long. 15 millim. .

Hab. Mexico (Sal/é).

Antenne filiform, longer than the body. Face closely, the clypeus scarcely, punc-

tured; face sharply projecting below the antenne; tips of the mandibles, the head

behind (except the orbits), and the vertex, black. Thorax closely punctured, the

punctures running into striations on the pleure. Metanotum without any carine

(except a transverse one at the apex), with an almost gradual slope from the base to

BIOL. CENTR.-AMER., Hymenopt., April 1886. 2 00

282 HYMENOPTERA.

the apex; the sides there depressed. Abdomen closely punctured, scarcely so strongly

as the thorax; there is an obscure black mark on the apex of the first segment; the

second and third segments are black along the sides; the fourth at the apical half and

the remaining segments black. The abdomen is long and slender, the first segment

flattish above, the apical one nearly cylindrical; in the middle it is testaceous. Legs

long, slender; the hinder pair fulvous, the anterior pair yellowish; tips of the tarsi

blackish. Areolet large, the lateral nervures a little curved and united above; below.

it is but very slightly angled where the recurrent nervure is received not far from

the base.

The eyes are large, and reach nearly to the base of the mandibles; the cheeks do not

project much. The metanotum is fulvous; the yellow colour runs more or less into

fulvous all over the body. | |

A specimen from Orizaba (Bilimek) has the abdomen black with the segments yellow

at the base and apex, the metanotum blackish in the middle at the apex, and the whole

body and legs of a much more decided fulvous tinge. It appears to be an aberration

of M. mexicanus.

5. Mesoleptus bardus.

Mesoleptus bardus, Cresson, Trans. Am. Ent. Soc. 1868, p. 34 (¢)'.

Hab. Mexico, Hacienda del Potrero, near Cordova : (Sumichrast).

6. Mesoleptus imbecillis.

Mesoleptus imbecillis, Cresson, Trans. Am. Ent. Soc. 1868, p. 84(¢)*.

Hab. Mexico, Hacienda del Potrero, near Cordova! (Sumichrast).

7. Mesoleptus emaceratus.

Mesoleptus emaceratus, Cresson, Trans. Am. Ent. Soc. 1868, p. 35 (¢)?.

Hab. Mexico, Hacienda del Potrero, near Cordova! (Sumichrast).

8. Mesoleptus decorosus.

Mesoleptus decorosus, Cresson, Trans. Am. Ent. Soc. 1868, p. 35 (¢)?.

Hab. Mexico, Hacienda del Potrero, near Cordova 1 (Sumichrast).

9. Mesoleptus alpestris. (Tab. XI. fig. 24.)

Niger; ore, palpis, facie, orbitis, linea pronoti, pleuris, sterno, lineis 2 mesonoti, scutello coxisque, flavis ;

pedibus fulvis; alis hyalinis, stigmate testaceo. ¢.

Long. 13 millim.

Hab. Muxtco, Ciudad in Durango 8100 feet (Forrer).

Antenne stoutish, the middle joints produced at the apices; in length as long as the

body. Head closely punctured, projecting in the centre in front, the cheeks not

MESOLEPTUS. 283.

buccate; clypeus rounded at the apex, its foveee deep. Thorax closely and finely

punctured all over; metanotum without keels. Prosternum, the edge of the pronotum

in front, a line above, the tegule, two narrow lines on the mesonotum reaching to the

pronotum, the scutellum, the lower half of the mesopleure, the sternum, and a large,

somewhat triangular, mark on the metapleure above the coxe, yellow. Abdomen

longish, cylindrical at the apex; black, the base and apex of the segments fulvous;

closely punctured, the apex but slightly. Legs longish, moderately stout, the cox

finely punctured. Areolet 5-angled; lateral nervures converging, but not uniting

above; the recurrent nervure received slightly beyond the middle.

10. Mesoleptus persimilis. (Tab. XI. fig. 25.)

Hab. Mexico, Ciudad in Durango 8100 feet (Forrer).

Very similar to M. alpestris, but smaller; the wings of a much more decided yellowish

hue, the areolet narrower, the lateral nervures united at the top; the yellow on the

mesopleura narrower; there is only a narrow oblique line on the metapleura, the hind

coxe are entirely black, except at the apex, and an oval mark at the base on the

outer side.

11. Mesoleptus guatemalensis.

Niger; ore, facie, orbitis, linea pronoti, tegulis, maculis 2 pleuralibus, scutello laterali maculaque metanoti,

flavis; abdominis medio testaceo; pedibus flavis; coxis posticis nigris, femoribus tibiisque (basi excepta)

posticis nigro-fuscis ; alis flavo-hyalinis, apice fumato, stigmate testaceo. ¢.

Long. 13 millim.

Hab. Guavremaua, Purula in Vera Paz (Champion).

Antenne as long as the body; inclining to fuscous on the under side, especially

towards the apex; densely covered with a blackish pile; third joint as long as the-

fourth and fifth together; the last joint as long as the preceding two together; there

are forty-eight joints in all. Head punctured, covered with longish fuscous hair; face

broadly projecting in the middle; clypeus also projecting, clearly separated, the apex

rounded ; ocelli placed on the top of the head, the front ocellus placed not much before

the two posterior ones; immediately behind these latter the head bends in towards the

front ocellus (the edges of this indentation have an indistinct border, and it does not

reach to the bottom of the head); above the antenne the front is deeply excavated,

_ and (immediately above each antenna) a somewhat triangular plate-like tubercle pro-

ceeds from the eye, extending backwards to the back of the excavated part. Thorax

densely pilose, closely punctured all over (except the mesopleure); a broad horizontal

line on the side of the pronotum, a mark above this on the mesonotum, the tegule, the

tubercle below them, a mark on the mesopleure (narrowed on the lower side behind), a

smaller mark beneath the hind wings, the sides and the extreme apex of the scutellum,

2 00 2

284 HYMENOPTERA.

the postscutellum, a small mark on either side of the metanotum above, and a large

mark (dilated on either side at the apex along the transverse keel), yellow. Metathorax

more strongly punctured than the mesothorax; the metanotum almost rugosely punc-

tured, with an arcuate transverse keel at the apex; metathoracic spiracles oblique, oval.

Abdomen densely pilose, the pile longest at the apex, which is compressed laterally ;

petiole of nearly equal width throughout, depressed in the centre above, with a some-

what triangular tubercle on the lower side at the basal third; the minute lateral

tubercles placed immediately above this; spiracles round; first and second segments

pale testaceous, the first broadly black in the middle, the second black along the sides

above; third segment black along the sides; the apex of the fourth, and the remaining

segments entirely, black; cerci testaceous. Legs pilose; middle coxe blackish before

and behind, the sides yellowish ; tips of the tarsi fuscous. Areolet oblique, triangular,

but slightly angled where the recurrent nervure is received towards the apical fourth ;

longly pedunculated. :

12. Mesoleptus (?) bucephalus.

Mesoleptus (?) bucephalus, Cresson, Trans. Am. Ent. Soc. 1868, p. 36 (3).

Hab. Mexico, Hacienda del Potrero, near Cordova ! (Sumichrast).

18. Mesoleptus (?) anguina.

Mesoleptus (?) anguina, Cresson, Proc. Acad. Phil. 1878, p. 391 (?)’.

Hab. Mexico, Orizaba! (Sumichrast).

MESOLEIUS.

Mesoleius, Holmgren, Sv. Ak. Handl. 1854, p. 62.

_ The species I have included in this genus agree better with the characters of

Mesoleius than of Tryphon. They, however, are scarcely typical, and might be included

in Tryphon if the metathoracic ares were not completely obsolete, Tryphon having, at

least, some of them present.

1. Mesoleius costaricensis.

Niger; annulo antennarum, clypeo, facie laterali, orbitis anticis, linea prothoracis, tegulis, scutello, postscutello,

metanotique apice late, flavis ; pedibus testaceis; tibiis tarsisque flavis; basi coxarum, femoribus posticis

supra tibiarumque posticarum dimidio apicali, nigris; alis fere fumatis, stigmate testaceo. ¢.

Long. 10 millim.

Hab. Costa Rica, Cache (Rogers). _

Closely punctured all over, covered with close pale pubescence, which is longest on

the pleure and breast. Antenne covered with microscopic pile; third joint as long as

the succeeding two together. Face scarcely projecting in the middle; the orbits in

front, the face (except a black line down its centre, this black line being prolonged

MESOLEIUS. 285

along the top of the clypeus to the base of the mandibles), the clypeus, and the

mandibles (except at the apex), black; labrum and palpi testaceous; clypeus slightly

projecting, transverse at the apex. The pronotum in front, a mark on either side of

the mesonotum in front (close to the pronotum), the scutellum, the postscutellum, the

apical half of the metanotum, the tegule, and the tubercles beneath them, yellow.

Abdomen not much longer than the head and thorax together; petiole considerably

longer than the second segment (being nearly as long as the following two segments

together), faintly punctured, black, the apex and sides yellow; the second, third, and

fourth segments black, yellow at the apex; the apical segments obscure testaceous-

yellow, more or less blackish. The anterior legs incline to yellowish, the four posterior

femora have a more decided testaceous hue; hind coxe marked with testaceous, running

into fulvous and yellow, the base black. Areolet broad; the lateral nervures curved,

united above; below, the recurrent nervure is received a little before the middle;

stigma blackish at the top, testaceous on the lower side. |

2. Mesoleius zapotecus.

Flavo-testaceus ; vertice, medio pronoti, mesonoto, maculisque 2 metanoti, nigris; facie, annulo antennarum,

orbitis tarsisque, flavis; alis fere hyalinis, stigmate testaceo. 2.

Long. 11 millim.; terebra fere 1 millim.

Hab. Muxico (Bilimek).

Antenne stout, nearly as long as the thorax and abdomen together ; brownish-black

above, the yellow ring broad; the scape yellowish, black above; the third joint more

than double the length of the fourth. Head yellow (except a broad black band in the

centre above the antenne, extending posteriorly, and a smaller one below the antenne,

not reaching to the centre of the face), obsoletely punctured ; the face projecting (but

not largely) in the centre; the clypeus projecting, limited behind by a deep depression.

Thorax yellow, the centre of the pronotum, a line proceeding from a little behind the

tegule under the fore wings down the side of the suture and bounding the mesopleura

in front, and the mesonotum (except two triangular yellow marks in front close to the

pronotum), black ; scutellum yellow; metanotum yellow, a black mark (dilated at the

apex, and on each side at the base) and a smaller, more triangular, one at the apex in

the middle ; mesonotum opaque, finely punctured ; metathorax more strongly punctured,

Petiole broad, becoming gradually broader towards the apex, more than twice as long

as broad; the sides furrowed (the lower side of the furrow bounded by a sharp Keel) ;

finely punctured ; a broad transverse mark in the centre, the apex triangularly incised.

The other segments are yellow, banded with broad fuscous-black bands at the base ;

these bands, however, becoming much narrower towards the apex, which is entirely

yellow. The sheath of the ovipositor broad, testaceous, projecting. Wings hyaline,

suffused with a smoky tinge; the nervures testaceous; areolet triangular above, the

lower side projecting, angled. Legs longish; the tips of the tarsi fuscous.

286 HYMENOPTERA.

3. Mesoleius montezuma. (Tab. XII. fig. 4.)

Niger ; ore, facie et orbitis proparte, tegulis, scutello, pedibus anterioribus, abdominis segmentis basi ventreque,

flavis; alis hyalinis, nervis nigris. 3.

Long. 8 millim.

Hab. Mexico, Ciudad in Durango 8100 feet (Forrer).

Shining, impunctate, covered with a short, sparse pile. Antenne long, slender,

nearly one fourth longer than the body. The mouth, the mandibles (except at the

apices, which are piceous), the inner orbits of the eyes broadly, a large mark in the

centre of the face, the tegule, the scutellum, the postscutellum, the four anterior legs

(except the bases of the coxe and the tips of the tarsal joints), the greater part of the

hind femora and tibise beneath, the tibial spurs at the base, the basal segments of the

abdomen broadly, the other segments narrowly at the base, and the ventral surface,

yellow, tinged slightly with fulvous. Hind legs longish (the tarsi considerably longer

than the tibie), rather stout, the apical part of the claw bare. Head a little broader

than the mesothorax ; eyes large ; the face not buccate, the clypeus slightly and broadly

incised. Scutellum slightly convex. Metathorax without keels, having a gradual slope ;

the sides slightly aciculated and pilose. Abdomen not much longer than the head and

thorax together, becoming gradually thicker towards the apex; petiole narrowed at the

base, becoming gradually wider towards the apex. Wings a little shorter than the

— body, without an areolet.

TRYPHON.

Tryphon, Fallén, Specim. novam Hym. (1813) ; Holmgren, Sv. Ak. Handl. 1855, p. 185.

A very extensive genus. The species of this group are not clearly defined generi-

cally; and it is doubtful if many of the American species placed in Tryphon really

belong to that genus as limited by Holmgren. The Tryphon mexicanus of Cresson

certainly cannot, as it has the claws pectinate.

i. Claws pectinate | PoLYBLAsTUS 2].

1. Tryphon mexicanus.

Tryphon mexicanus, Cresson, Proc. Acad. Phil. 1873, p. 891 (3) ’.

Hab. Mexico, Mirador (Dr. Sartorius).

ii. Claws simple.

2. Tryphon montezuma. (Tab. XII. fig. 2.)

Niger; mandibulis, femoribus anterioribus abdomineque (basi excepta) rufis; palpis, tibiis tarsisque anteri-

oribus, flavis; alis fuscis, nervis nigris. ¢.

Long. 7 millim. |

Hab. Mexico, Ciudad in Durango 8100 feet (Forrer).

TRYPHON.—POLYBLASTUS. 287

Antenne nearly as long as the body, covered with microscopic pile ; third joint more

than one half longer than the fourth. Head covered with pale pubescence, aciculated,

the face coarsely blistered ; clypeus not separated, without fovee; eyes longish, oblong,

reaching to the base of the mandibles. Thorax finely punctured, covered with a close

pile; scutellum raised, shining, the sides keeled. Metathorax with eight aree; the

upper median area longish, slightly dilated a little beyond the middle, narrowed

towards the apex; covered with rather long grey hair; spiracles small, round. Petiole

slightly thickened towards the apex, keeled along the sides, the tubercles longish; the

postpetiole a little narrowed in the middle. Legs moderately stout; coxz, the base of

the hind trochanters, the hind femora (except the base and apex), and the hind tibie

and tarsi (except at the base and apex), black. Areolet irregular, shortly petiolated,

longer than broad; the nervures thick.

3. Tryphon croceiventris.

Tryphon croceiventris, Cresson, Trans. Am. Ent. Soc. 1868, p. 36 (¢)’.

Hab. Mexico, Hacienda del Potrero, near Cordova ! (Sumichrast).

4, Tryphon (?) maculipennis.

Tryphon (?) maculipennis, Cresson, Proc. Acad. Phil. 1878, p. 892 (¢ 2)’.

Hab. Mexico, Orizaba1+ (Sumichrast).

5. Tryphon (?) laticinctus.

Tryphon (?) laticinctus, Cresson, Trans. Am. Ent. Soc. 1868, p. 836 (?)*; Proc. Acad. Phil. 1873,

p. 892.

Hab. Mexico, Hacienda del Potrero, near Cordova! (Sumichrast).

POLYBLASTUS.

Polyblastus, Hartig, Wiegmann’s Archiv, 1837, p. 155.

_ It is exceedingly doubtful if the species here described as a Polyblastus really belongs

to that genus; the discovery of more specimens (I have only a mutilated male) will, I

believe, show that it should be made the type of a new genus.

1. Polyblastus (?) aztecus. (Tab. XII. fig. 3, 3.)

Niger; ore, facie, orbitis, linea pronoti, macula mesoscutelli, postscutello, maculisque 2 metanoti, flavis ;

abdomine rufo, basi nigro ; pedibus anterioribus flavis, posticis nigris; femoribus subtus basique tibiarum

late, rufo-fulvis ; alis hyalinis, nervis nigris. ¢.

Long. 10 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne covered (except the scape) with a microscopic pile; thick (the apex is now

broken off, but, if my memory serves me correctly, it was much stouter than the base),

288 HYMENOPTERA.

the joints produced at the base and apex on the lower side. Head broad; not deve-

loped much behind the eyes, which are large and margined ; the front slightly hollowed

above the antenne, the face projecting beyond it, especially in the middle; clypeus

almost transverse, clearly defined behind by a furrow; face strongly, the vertex and

front more finely, punctured. Thorax shining, bearing clearly separated punctures ;

scutellum obsoletely, the pleuree and metathorax strongly, punctured. Scutellum

broader than long, becoming narrower towards the apex; flattish, but raised in the

centre. The metanotum has eight arew, and is hollowed in the centre; there are two

large yellow marks on each side of the hinder median area, and a small one close to the

stigma; the sides and apex covered with white hair. The petiole becomes gradually

thickened towards the apex; the sides are keeled and the centre raised, the raised part

bounded by a not very distinct furrow; the gastrocceli at the base of the second segment

are curved, moderately wide and deep, and finely punctured. ‘The abdominal segments

are clearly separated ; strongly punctured, and covered (especially laterally and at the

apex) with white hair. Legs stout; hind coxe large, thick, hollowed posteriorly. The

four anterior legs are fulvous; the hind coxe reddish, black at the base beneath; the

trochanters are black at the base; the femora are mostly reddish beneath, and the hind

tibie are red, broadly black at the apex. Wings short; the areolet oblique, the lateral.

nervures converging towards the top, the lower part produced into an angle which

receives the recurrent nervure close to the middle.

Subfam. OPHIONINA.

Although this subfamily contains some of the most conspicuous species of Ichneu-.

monide, yet the number of species hitherto found in our region is comparatively small.

THYREODON.

Thyreodon, Brullé, Hist. Nat. Ins. Hymén. iv. p. 150.

Species of this genus have been recorded from Asia, but I believe it will be found

that Thyreodon is strictly a New World genus.

~ J. Thyreodon niger. (Tab. XII. fig. 12 *.)

Thyreodon niger, Cresson, Proc. Acad. Phil. 1873, p. 375 (3 2)’.

Hab. Mexico, Cordova! (Sumichrast); Guatemaua, Cubilguitz in Vera Paz (Cham-

pion). |

2. Thyreodon erythrocera. (Tab. XII. fig. 13.) ;

Hab. Mexico, Valladolid in Yucatan (Gaumer).

This species has the deep black body, wings, and reddish antenne (black at the base-

* The name of the genus is erroneously given as “‘ Thyredon” on the Plate.

THYREODON. 289

and apex) of 7. morio, Fabr., and 7. gracilis, Cresson, but it is probably distinct from

either. The face is deeply punctured, the hollow over the antenne bears some large,

curved, transverse striations; the vertex is almost impunctate ; the eyes are distinctly

margined ; the fovea at the side of the clypeus is longish and deep; the mandibles and

palpi are covered with long brownish hair; the head is closely covered with black hair.

The upper side of the thorax is opaque; the mesopleure impunctate and shining; the

mesonotum is closely and distinctly punctured all over, the inner sides of the furrows

rugose and raised ; the scutellum is shining, and punctured, but not closely; the keels’

in front of the scutellum are coarsely striated, the hollows behind it being also strongly

striated; the metathorax is opaque, depressed at the base, bulging out somewhat at

the sides, hollowed in the centre behind, the hollow widest at the apex; the mesonotum

is very closely and transversely, the pleure more strongly and longitudinally, striated.

Length 32 millim.

I. grandis, Cresson, differs from this species in having the mesothorax “ very minutely

and indistinctly punctured,” the furrows on the mesonotum having a carina down

the middle, and in the scutellum being densely punctured. In 7’. erythrocera the

body is deep black, without either blue or green tints; the anterior femora inclining to

piceous in tint. The specific distinctions between 7. grandis, Cresson, 7. cyaneus,

Brullé, and 7. erythrocera can only be satisfactorily made out by an examination of

typical specimens. —

8. Thyreodon morosus.

Thyreodon morosus, F. Smith, Descr. of New Species of Hymen. p. 230 (¢)?.

Hab. Costa Rica, Cache (Rogers +)

This species is readily known from T. erythrocera &c. by the antenne being whitish

yellow, not fulvous; by the face heing more strongly punctured, and with the two

longitudinal furrows much more distinct ; and by the scutellum being more gibbous

and strongly punctured.

~————=" 4. Thyreodon maculipennis.

Thyreodon maculipennis, Cresson, Proc. Acad. Phil. 1873, p. 375 (d¢)’

Hab. Mzxtico, Orizaba, Cordova (Sumichrast 1).

5. Thyreodon laticinctus. (Tab. XII. fig. 14.)

Thyreodon laticinctus, Cresson, Proc. Acad. Phil. 1873, p. 876 (2) *.

Thyreodon principalis, ¥. Smith, Descr. of New Species of Hymen. p. 280 (¢) *.

Hab. Mexico, Orizaba (Sumichrast 1); Guatemata, Zapote, Senahu (Champion) ;

Costa Rica, Irazu, Cache (Rogers 2).

Apparently a common and widely distributed species. ,

BIOL. CENTR.-AMER., Hymenopt., June 1886. 2 PP

290 HYMENOPTERA.

6. Thyreodon ornatipennis.

Thyreodon ornatipennis, Cresson, Proc. Acad. Phil. 1878, p. 876 (9?) '.

Hab. Mexico, Orizaba (Sumichrast 1).

7. Thyreodon rufithorax. (Tab. XII. fig. 15, 2.)

Ferrugineus ; vertice, flagello antennarum, abdomine, pedibus posticis tarsisque intermediis, nigris ; alis hyalinis,

fusco fasciatis. 9.

Long. 33 millim.

Hab. Panama, Bugaba 800 to 1500 feet ( Champion).

Face rugose, the clypeus punctured ; mesothorax and scutellum finely punctured, the

mesopleure finely striated; metanotum with two irregular keels, united by cross ones,

going down the centre; there is an equally strong keel down the side, united to the

central keels by six strong transverse ones; metapleure with indistinct, rather widely

separated, keels. Abdomen of the usual shape and with a steel-blue tinge. The base

and apex of the wings are smoky ; the apical three fourths of the radial cellule and a

band along the basal nervure being deep black. °

OPHION.

Ophion, Fabricius, Ent. Syst. Supp. p. 210.

A genus of wide distribution over the globe. The very uniform coloration of the

species, and the slight structural variations which they show, render their identification

very difficult. Ophion is divisible into two groups :— .

1. With horny points in the fore wings.

Eniscopilus, Stephens, Ill. Brit. Ent. Mand. vii. p. 126 (1835).

In the same species of this group the inner (and smaller, when present) spot tends to

become obsolete ; and in some species of true Ophion, e. g. O. curvinervis, the spots might

almost be said to be present, although transparent. I am not at all sure if the shape

of the outer horny point can be depended upon as an aid to specific distinetion; it

seems to me to vary considerably.

A. First cubital cellule with two horny points.

a. Stigma yellow or fulvous.

1. Ophion (Eniscopilus) mexicanus. (Tab. XII. fig. 23.)

Ophion meaicanus, Cresson, Proc. Acad. Phil. 1878, p. 374 (?)*.

Hab. Mxxico, Cordova (Sumichrast 1) ; Guatnmata, San Gerénimo (Champion).

This species may be known from the following by the black antenne and by the long

OPHION. | 291

and narrow first discoidal cellule. The two horny points in the fore wings are distinct,

as is also the line running from the triangular point. In the examples from Guatemala

the apical half of the abdomen is fuscous.

2. Ophion (Eniscopilus) concolor, (Tab. XII. fig. 24.)

Ophion concolor, Cresson, Proc. Ent. Soc. Phil. 1865, p. 56°.

Hab. Guatemata, San Gerénimo (Champion).—ANTILLES, Cuba}.

I am not quite certain about the Guatemalan examples being conspecific with

O. concolor; but on the whole they agree fairly well with the description. In two

specimens the outer horny point is rather large, in another it is obsolete.

3. Ophion (Eniscopilus) thoracicus.

Ophion thoracicus, Cresson, Proc. Ent. Soc. Phil. 1865, p. 55°; Proc. Acad. Phil. 1873, p. 874°.

Hab. Mexico, Cordova (Sumichrast?).— ANTILLES, Cuba?.

4. Ophion (Eniscopilus) flavo-scutellatus. (Ophion thoracicus, Tab. XII.

fig. 25.)

Ophion flavo-scutellatus, Brullé, Hist. Nat. Ins. Hymén. iv. p. 140°. .

Hab. Guatemata, Cerro Zunil 4000 to 5000 feet (Champion); Costa Rica, lrazu

6000 to 7000 feet (Rogers).

This insect usually has a broad fuscous band on the metanotum; sometimes, how-

ever, the fuscous colour is almost obliterated. It varies in size about 3 millim. The

usual form of the outer horny point is rather long and conical at either end; some-

times irregular at the ends; and in one specimen it is very small. A well-marked

feature of this species is the clearly-defined keel down the centre of the meta-

notum.

5. Ophion (Eniscopilus) fuscicornis.

Hab. Guaremata, San Gerénimo (Champion).

Similar in coloration to O. flavo-scutellatus, except that the mesonotum is marked

with dark fulvous, not fuscous; differing otherwise in being smaller, in there being a

distinct longish tubercle below the antenne, in the metanotum being smooth and

impunctate and with the transverse keel rather indistinct, and the antenne dark fuscous,

almost black. The head and pleure are yellowish ; the metanotum behind the trans-

verse keel i is scarcely wrinkled.

2 PP 2

999 | HYMENOPTERA.

6. Ophion (Eniscopilus) flavus. (Tab. XII. fig. 21.)

Ichneumon flavus, Fabr. Ent. Syst. u. p. 179.

Ophion flavus, Fabr. Ent. Syst. ii. Supp. p. 236; Cresson, Proc. Ent. Soc. Phil. 1865, p.57'; Proc.

Acad. Phil. 1873, p. p. 374°,

Hab. Muxtco, Cordova (Sumichrast 2) ; Nicaragua, Chontales (Janson).—ANTILLES,

Cuba !. '

| b. Stigma black.

7. Ophion (Eniscopilus) monticola. (Tab. XII. fig. 28.) _

Luteus ; orbitis facieque flavis; antennis, vertice abdominisque segmentis 3°-8™, nigris ; alis hyalinis, nervis

stigmateque nigris. Q.

Long. 22-23 millim.

Hab, Guatemata, Las Mercedes 3000 feet, San Isidro 1600 feet (Champion).

Antenne longer than the body, closely pilose. Head impunctate. Mesonotum

tinged with black in the centre, shining, impunctate. Scutellum longish, narrowed

towards the apex, the sides-keeled, the back irregularly longitudinally striated. Meta-

notum with a transverse keel towards the basal half, behind which it is smooth; in

front of it coarsely reticulated and bearing in the centre keels, which are straight at

the base and then diverge towards the sides. The two basal segments of the abdomen

are subequal; the first becoming gradually thickened towards the apex.

8. Ophion (Eniscopilus) maculipennis. (Tab. XII. fig. 29.)

Flavus, maculis 3 mesonoti, sternoque nigris ; alis hyalinis, fascia substigmatali fusca. 9.

Long. 18 millim.

Hab. Panama, Bugaba (Champion).

Antenne longer than the body, yellow, fuscous towards the apex. Head impunctate,

shining. Mesonotum finely and closely punctured. Scutellum more strongly punc-

tured, strongly keeled down the sides. Metanotum behind the transverse line finely

punctured ; in front of it coarsely transversely rugose; mesopleure closely punctured.

The pro-, meso-, and metasternums are black; the black on the mesosternum extends

halfway up the mesopleure, and is continued in the middle as an oblique band to the

hind wings. There is a black mark on the underside of the middle coxa, a larger one

on the hinder coxe, and the apical half of the petiole is more or less black; the third

and following segments incline to fuscous above. The stigma is black, except at the base

and apex, where it is yellow; the costa is yellow; the other nervures black; the

anterior horny point is distinct, about one half longer than broad, and obliquely trun-

cated at the apex. The legs are clear pallid yellow.

A distinct and well-marked species.

OPHION. | 293

B. First cubital cellule with only one horny point.

9. Ophion (Eniscopilus) guatemalensis. (Tab. XII. fig. 22.)

Pallide flavus, alis hyalinis, stigmate pallide flavo. 9.

Long. 18 millim.

Hab. Guatemaa, San Gerénimo (Champion).

In its unicolorous body this species agrees with O. concolor, but it is much smaller, —

and the colour is more diluted in tint. Otherwise it differs in the metanotum being

much less strongly wrinkled, while there is no keel down its middle; the scutellum is,

if anything, more gibbous, not so much narrowed behind, scarcely keeled at the sides, .

and not punctured, but faintly striated at the apex; the inner discoidal cellule is not so

much dilated at the apical half (see figures), and in the first cubital cellule only the

pear-shaped horny point is present, it being also broader and shorter. O. flavus may be

known from O. guatemalensis by the deeper fulvous tint of the body; by the middle of

the vertex being black; the apex of the abdomen fuscous or black; by the mesonotum

being punctured, the metanotum much more strongly wrinkled ; while the form of the

horny point in the fore wings is different, it being much more strongly pointed at the apex.

2. No horny points in the fore wings (Ophion, sensu str.).

A. Inner discoidal cellule elongated, more than three times longer than wide ;

Jirst recurrent nervure without a branch.

10. Ophion curvinervis. (Tab. XII. fig. 19.)

Luteus ; capite, pleuris scutelloque, flavis; alis hyalinis, stigmate luteo ; antennis nigro-brunneis. 9.

Long. 29-31 millim.

Hab. Guavemata, Las Mercedes 3000 feet, Senahu ( Champion).

Antenne as long as, if not longer than, the body ; black, the flagellum more or less

| brownish on the lower side, the scape sometimes luteous beneath. Head shining,

obscurely punctured, not much projecting in the middle; clypeal fovee deep, longish.’

Thorax covered with close pale pubescence. Mesonotum very minutely punctured,- the

pleure: finely longitudinally striated. Scutellum carinate along the sides. Metanotum

with one transverse keel near the base; the base behind it finely rugose ; the rest of the —

surface finely rugose, and bearing arcuate keels. Metapleure finely rugose. Petiole

shining, glabrous, slightly hollowed in the centre above at the base ; postpetiole clearly

separated from, and distinctly thicker than, the petiole, densely covered with a white

pubescence ; the petiole itself is narrowed at the apex ; together they are nearly as long

as the second segment, which is dilated at the apex. The tremsverse- radial nervure is

curved upwards in the middle on the basal division, the apical portion having a

294, HYMENOPTERA.

gradual curve from the base to the apex, the extreme apex curved upwards; the

angle formed at the apex of the first cubital cellule shorter on the upper than on the

lower side.

11. Ophion chiriquensis, (Tab. XII. fig. 20.)

Luteus, capite, scutello pleurisque, flavis ; alis hyalinis, stigmate luteo. 9.

Long. 23 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

Smaller than O. curvinervis, and identical with it in sculpture (including the form of

the ‘metathorax), and in coloration, except that the antenne are entirely luteous ;

differing from it otherwise in its smaller size, in the second abdominal segment being

stouter and not so much compressed laterally compared to the first; in the basal division — |

of the radial nervure not being curved upwards, and in the upper angles of the apex of

the first cubital cellule being longer than the lower.

B. Inner discoidal cellule not much longer than high; scutellum not clearly keeled.

a. Inner discoidal cellule angled at the inner. upper margin; the recurrent nervure

emitting a branch ; stigma luteous.

12. Ophion flavo-orbitalis. (Tab. XII. fig. 16.)

Luteus, orbitis scutelloque flavis; alis hyalinis, stigmate luteo. ¢.

Long. 21-22 millim.

Hab. Mexico, Cordova (Hoge); Panama, Volcan de Chiriqui 2500 to 4000 feet

(Champion).

Face broadly projecting, finely punctured. Thorax finely punctured ; scutellum with

the sides carinate; metanotum aciculate, with two sharp transverse keels, the space

between them hollowed ; a longitudinal keel on either side of these, and two keels run

down the middle from the posterior transverse one, forming a longish area. First

abdominal segment dilated at the apex, the dilation gradual from the middle; the sides

keeled ; second segment thicker, and distinctly shorter than the first.

13. Ophion ancyloneura. (Tab. XII. fig. 17.)

Flavus ; antennis, abdomine, femoribus tibiisque, luteis; alis hyalinis, stigmate testaceo. 9.

Long. 17 millim.

Hab. Guatemata, Capetillo (Champion).

Antenne a little longer than the body, pilose ; third joint shorter than the fourth and

fifth together. Head closely punctured ; clypeal fovee large, deep, longer than broad ;

face broadly projecting in the middle; a longish tubercle below the antenne; tips of

the- mandibles piceous-black. Thorax almost impunctate, shining; mesonotum witb

OPHION—NOTOTRACHYS. 295

three obscure fuscous stripes, the sutures very shallow; metanotum with two distinct

transverse keels, united in the centre by two longitudinal ones, which form a longish

area; from the apical transverse keel run some not very clearly defined keels to the apex

(except the central two, which form an area, narrower towards the apex, in front of the

above-mentioned area between the two transverse keels). Petiole inclining to yellowish,

indistinctly keeled; postpetiole thicker than, and clearly defined from, the petiole,

luteous, and finely and closely punctured. The other segments are densely pilose, the

apical one more darkly coloured. Smaller than O. flavo-orbitalis; the head and thorax

almost entirely yellow; the third joint of the antenne longer; the first abdominal seg-

ment longer and narrower; the postpetiole longer in proportion to the petiole; the

second segment contracted before the middle (in addition to the contraction at the base) ;

- the first discoidal cellule distinctly angled in the middle above, the bulla received quite’

close to the middle, the projecting branch reaching nearly halfway across.

b. Inner discoidal cellule not angled ; the recurrent nervure not emitting a branch;

stigma black.

14. Ophion melanostigma. (Tab. XII. fig.'18.) -

Luteus, orbitis thoraceque flavis; antennis nigris ; alis hyalinis, stigmate nervisque nigris. ¢.

Long. 23 millim. /

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

Head strongly punctured; a longish, clearly defined tubercle below the antenne ;

- antennal regions projecting, separated from the eyes by an oblique depression, which

extends near to the inner side of each antenna; tips of the mandibles piceous-black.

Antenne longer than the body, densely pilose ; third joint longer than the fourth and

fifth together; the apical joints brownish. Thorax pilose, shining, impunctate ; meta-

notum without keels. First discoidal cellule rounded at the upper inner corner, and

without any branch ; bulla received a little beyond the middle.

NOTOTRACHYS.

Trachynotus, Gravenhorst, Ichn. Europ. iii. p. 715 (1829) (nomen preoc.).

Nototrachys, Marshall, Trans. Ent. Soc. 1872, pp. 50 & 63.

A genus containing a few species, found in Europe and America.

t: Nototrachys fuscatus.

Trachynotus fuscatus, Cresson, Proc. Ent. Soc. Phil. 1865, p. 50 (¢ ?)*.

Nototrachys fuscatus, Cresson, Proc. Acad. Phil. 1873, p. 375°.

Hab. Mexico, Orizaba, Cordova (Sumichrast*).— ANTILLES, Cuba}.

296 | | HYMENOPTERA.

OPHIOPTERUS.

Ophiopterus, Brullé, Hist. Nat. Ins. Hymén. iv. p. 153 (1846).

A genus exclusively American, and containing few species.

1. Ophiopterus fuscipes. | |

Niger ; facie, ore, orbitis, linea pronoti, tegulis, scutello abdominisque basi, flavis; pedibus fuscis, anticis

pallidis ; alis hyalinis, nervis nigris. 2.

Long. 12 millim.

Hab. Muxtco, Orizaba (Bilimek).

Densely covered with a silvery-white pubescence, densest on the pleure. Head finely

punctured ; antenne short, not much longer than the head and thorax together, the scape

pale yellow beneath. Pronotum obliquely, the mesonotum transversely and very strongly,

striated, the striations widely separated; a shining impunctate space below the hind

wings on the mesopleure ; the rest strongly longitudinally striated, running at the edges

into reticulations ; scutellum shining, nearly impunctate; metathorax coarsely reticu-

lated, and having a gradual slope to the apex. Abdomen shining, impunctate, covered

with a pale close pile ; black, the sides from the third segment obscure rufous ; sheath

of the ovipositor black. Legs in greater part fuscous, covered with a pale pile; the

femora inclining to rufous on the lower side; the fore legs almost entirely, and the

middle pair in front, pallid testaceous. | a

2. Ophiopterus niger.

Niger ; alis fere fuscis. .

Long. 16 millim.

Hab. Mexico, Hurchihuitle (Bilimeh).

Head semiopaque, covered with a depressed pile; a longitudinal keel running down

from the ocelli, and from it short striations proceed on either side; thorax finely punc-

tured, a smooth, shining, impunctate space beneath the wings; pronotum at the sides |

obliquely striated ; mesopleure at the edges longitudinally striated ; mesonotum in front

of the scutellum reticulated ; metathorax coarsely reticulated. Abdomen three times the

length of the thorax, shining, impunctate; the three basal segments cylindrical, narrow,

the second segment the longest.

~——~—— 3. Ophiopterus ferrugineus.

Ophiopterus ferrugineus, Cresson, Proc. Acad. Phil. 1878, p. 380 (¢).

Hab. Mexico, Orizaba (Sumichrast +).

OPHIOPTERUS.—HETEROPELMA. 297

4. Ophiopterus striatifrons.

Niger; ore, orbitis late, tegulis, coxis anterioribus, abdominisque basi, flavis, pedibus rufis; alis brevibus,

hyalinis, nervis nigris. 9 et ¢.

Long. 9-10 millim.

Hab. Mexico, Ciudad in Durango (Forrer).

Antenne about half the length of the abdomen, microscopically pilose ; fuscous towards

the base of the flagellum, the basal joint of the scape yellow on the underside. Head

black ; the mouth, the mandibles, the palpi, the orbits (broadly on the inner, narrowly

on the outer, side), and the face (except a triangular black mark), yellow; face and

vertex finely punctured; the front transversely, and the head behind at the sides lon-

gitudinally and strongly, striated; an indistinct keel runs down from the ocelli, and

another from each antenna down the face. Thorax black; a broad line on each side of

the mesonotum in front close to the pronotum, the tegule, and the scutellum in the centre,

yellow ; mesonotum strongly transversely striated in front, punctured in the middle,

aciculated behind; prothorax obliquely striated at the sides, except in the middle,

which is shining and impunctate ; pronotum roughly transversely striated; mesopleura

(except below the wings) and sternum rugose; scutellum punctured, the lateral keels

stout; metathorax coarsely reticulated. Abdomen twice the length of the head and

thorax united; the greater part of the basal half yellow, segments 4 and 5 rufous.

Legs reddish; the four anterior cox and trochanters yellow; the hind coxe and

trochanters black, yellow at their junction; the base of the hind femora and the

apices of the tibie and tarsi black. In most of the specimens the hind femora and

tibiee incline to fuscous or black, perhaps owing to discoloration. The wings are not

half the length of the abdomen.

AGATHOPHIONA.

Agathophiona, Westwood, Tijd. voor Ent. xxv. p. 19 (1882).

Agathophiona has the neuration of Ophion, but differs from that genus in the form

of the abdomen (which is much thicker and not so much compressed), and also in the

greatly elongated labium.

Only one species is known.

1. Agathophiona fulvicornis. (Tab. XII. fig. 11.)

Agathophiona fulvicornis, Westw. loc. cit. p. 20, t. 4. figg. 5-137.

Hab. Mexico, San Angel (Coffin!), Chapultepec (Bilimek).

HETEROPELMA.

Heteropelma, Wesmael, Bull. Acad. Brux. xvi. p. 120 (1849).

The only Central-American species which can be fairly regarded as a Heteropelma

BIOL. CENTR.-AMER., Hymenopt., July 1886. 2 aa

298 HYMENOPTERA.

differs from the typical forms in having the recurrent nervure interstitial; but as our

insect agrees in other respects, I think we must provisionally regard it as belonging to

Wesmael’s genus, which contains but few known species.

1, Heteropelma sonorensis. (Tab. XII. fig. 30.)

Niger; facie, orbitis, scutello, pedibus 4 anterioribus, pedibus posticis pro parte tegulisque, flavis ; antennis

rufis. 9°.

Long. 17 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antennz not much longer than the head and thorax united, stout, 33-jointed, covered

with a depressed pile ; the third joint not much shorter than the three following ones

united. Head covered with longish white hair, strongly punctured, coarsely rugosely

striated below the ocelli. Thorax covered with long white hair, which is especially long

on the sides and breast, strongly punctured all over; metathorax rugose, reticulated in

the middle and at the sides behind, where there are two not very distinct keels; the

keels in front of the scutellum are acute and curved, and they are prolonged forwards

along the tegule; scutellum raised, broader than long, narrowed behind. Abdomen

about twice the length of the thorax ; the first segment cylindrical, a little longer than

the second, the latter dilated towards the apex ; the first two segments, and the others on

the top and the lower edge of the sides, are ferruginous, stained with black; there is a

long black line on the second and on the fourth and fifth segments; the sides from the

third segment, the ventral surface, and the sheaths of the ovipositor are yellow. The

four anterior legs are entirely bright yellow; the posterior legs have the coxe black ;

the basal joint of the trochanter, the femora, the apical third of the metatarsus, and the

other tarsal joints dark rufous; the apical joint of the trochanters, the basal two thirds

of the tibiz, and the basal two thirds of the metatarsus, yellow ; the apical third of the

tibia, and a spot on the apex of the metatarsus, black. Wings smoky, with a violet

tinge, the costa and stigma testaceous; the recurrent nervure is interstitial.

EXOCHILUM.

Exochilum, Wesmael, Bull. Acad. Brux. xvi. p. 121 (1849).

A genus containing but few species, and not yet found in America south of Mexico.

It is also represented in Europe.

1. Exochilum mundum.

Ophion mundus, Say, Bost. Journ. Nat. Hist. i. p. 289 (g)'; Lec. Complete Writings of Thomas

Say, 11. p. 695.

Ezxochilum mundum, Cresson, Proc. Acad. Phil. 1878, p. 875 ?.

Campoplex flavipes, Brullé, Hist. Nat. Ins. Hymén. iv. p. 170.

Hab. Norta America, United States 1\—Mexico, Cordova 2.

RETANISIA. 299

RETANISIA.

Head as broad as the mesonotum, about one half broader than Jong. Clypeus almost

transverse at the apex, but with the sides rounded; labrum small, rounded. Eyes not

incised on the inner side. Parapsidal furrows deep and wide, reaching nearly to the

scutellar fovea, which is wide and deep. Scutellum longer than broad, not much ele-

vated, narrowed towards the apex, which is rounded; the sidesare keeled. Metathorax

gradually sloping to the apex, longish, with more or less distinct are. Abdomen not

very much longer than the head and thorax united, becoming gradually dilated to the

fifth segment. Hind legs very long; the coxe longer than the trochanters, the tibie

nearly as long as the coxe, trochanters, and femora united ; the tarsi a little shorter than

the tibie; the hind tibize have two short, thick spurs, the anterior pair a longer and

curved one. The metatarsus is scarcely twice the length of the next joint; and the

basal joint of the anterior tarsi is curved at the base.

In this genus the first cubital cellule receives both the recurrent nervures, and there-

fore agrees with Thyreodon, Ophion, Nototrachys, Ophiopterus, and Agathophiona. From

Thyreodon it may be known by the abdomen not being strongly compressed laterally,

the much longer legs and antenne, the eyes entire, and the claws not pectinated ; from

‘Nototrachys by the long antennz and the shining mesonotum; from Ophion by the

abdomen not being compressed, the eyes entire, and the non-pectinated claws; from

Ophiopterus by the very long antenne and legs and the dilated abdomen; and from

Agathophiona by the normal length of the labium, the long antenne, the much longer

legs, and the much shorter, more dilated and thickened abdomen ; and from all five by

the very deep parapsidal furrows.

The antenne in the male (the only sex known) are longer than the body ; the joints

contracted in the middle, dilated at the base and apex ; the third joint about one fourth

longer than the succeeding ones; towards the apex the joints become very slightly

narrowed.

1. Retanisia facialis. (Tab. XII. fig. 10.)

Nigra; scapo antennarum subtus, facie, ore, orbitis, pedibus anterioribus pro parte apiceque tarsorum posti-

corum, flavis; alis hyalinis, apice fumatis, nervis nigris. ¢.

Long. fere 15 millim.

Hab. GuateMaLa, Purula (Champion).

Head strongly punctured ; a triangular projection below the antenne, its centre almost

carinated, the face transversely striated on either side of it; below the antenne, the

orbits broadly behind, the palpi, the clypeus (except at the extreme apex), and the labium,

yellow. Thorax strongly punctured, shining; the scutellum scarcely so strongly punc-

tured as the mesonotum ; metanotum with seven aree; the sides more or less reticulated.

Abdomen shining, impunctate, the ventral surface in the middle obscure yellow. The

2 QQ 2

300 HYMENOPTERA.

anterior legs in front and the tarsi are entirely yellow; the middle pair have the coxa,

the greater part of the trochanters, the femora (except at the base), and the apices of

the tarsi, yellow; the apical four joints of the hind tarsi are also yellow. The head and

thorax are covered with a close fuscous pile.

ANOMALON.

Anomalon, Jurine, Nouv. Méthode de classer les Hymén. et les Diptéres, p. 114 (1807) ; Graven-

horst, Ichn. Europ. iii. p. 627.

1. Anomalon mexicanum.

Anomalon mexicanum, Cresson, Proc. Acad. Phil. 1878, p. 376 (?)’.

Hab. Mexico, Orizaba (Sumichrast) *.

2. Anomalon vitticolle.

Anomalon vitticolle, Cresson, Proc. Acad. Phil. 1873, p. 877 (?) *.

Hab. Mexico, Orizaba (Sumichrast) 1,

38. Anomalon magum.

Anomalon magum, Cresson, Proc. Acad. Phil. 1873, p. 877 (¢ ?)’.

Hab. Mexico, Cordova’ (Sumichrast).

4. Anomalon peritum.

Anomalon peritum, Cresson, Proc. Acad. Phil. 1878, p. 377 (2).

Hab. Mexico, Mirador! (Dr. Sartorius).

5. Anomalon residuum.

Anomaton residuum, Cresson, Proc. Acad. Phil. 1873, p. 378 (¢ )°*.

Hab. Mexico, Orizaba (Sumichrast) }.

6. Anomalon scelerosum.

Anomatlon scelerosum, Cresson, Proc. Acad. Phil. 1873, p. 378 (g 9 )?.

Hab. Mexico, Orizaba (Sumichrast)}.

7. Anomalon guatemalenum. (Tab. XII. fig. 26.)

Ferrugineum ; antennis nigris, tarsis flavis; alis fere fumatis. 9°.

Long. 23 millim.

Hab. Guatemata, Purula (Champion).

Antenne thin, filiform, pilose, inclining to brownish on the lower side; about three

fourths the length of the body. Head rugose, covered closely with a whitish pubescence.

ANOMALON. 301

Thorax similarly pubescent ; mesonotum finely punctured; propleura obliquely, the meso-

notum longitudinally, striated ; scutellum rugose; metanotum coarsely reticulated ;

metapleure very coarsely rugose. First abdominal segment narrow, the apex dilated ;

second segment of nearly equal breadth throughout on the upperside, but dilated down-

wards at the apex, considerably longer than the basal segment, and black above; the

apical segments darker. Coxe punctured, covered with long glistening white hair ;

femora glabrous; tibie covered with a dark and close, the tarsi with a lighter, pile ;

anterior legs lighter in colour than the posterior ones, which latter have.the tips of the

tarsi and of the tibie inclining to blackish. Wings slightly smoky, the apex much

darker; stigma black above, testaceous on the lower side; first recurrent nervure

received a little below the middle; discoidal cellule more than twice the width at the

apex than at the base.

8. Anomalon fumipenne.

Anomalon fumipenne, Cresson, Proc. Acad. Phil. 1873, p. 379 ( 2)’.

Hab. Mexico, Orizaba (Sumichrast) '.

9, Anomalon agnatum.

Anomalon agnatum, Cresson, Proc. Acad. Phil. 1873, p. 379 (g)°.

Hab. Mexico, Mirador 1 (Dr. Sartorius).

10. Anomalon (?) elegans.

Anomaion (?) elegans, Cresson, Proc. Acad. Phil. 1878, p. 379 (?)*.

Hab. Mexico, Orizaba (Sumichrast)?.

11. Anomalon quadrilineatum.

Flavum ; antennis, vertice, lineis 4 thoracis, abdomine supra, dimidio apicali tibiarum posticarum tarsisque pos-

ticis, nigris ; abdomine pedibusque rufo-testaceis ; alis hyalinis, nervis nigris.

Long. 16 millim.

Hab. Guatemata, San Gerénimo (Champion).

Antenne about three fourths of the length of the body, slender, more thickened

towards the base; scape yellowish beneath. Head thickish, impunctate, the vertex

aciculate. Thorax shining; mesonotum with some scattered punctures; metanotum

with a broad and deep furrow down its centre; three (the two lateral not reaching to

the base of the lobes) broad lines on the mesonotum, the suture of the metathorax, and

a line down the metanotum, black. Abdomen longish, strongly compressed ; the first seg-

ment clear yellow at the base; ovipositor as long as the hind tibie. Hind femora with

a keel on the underside, terminating in an indistinct tooth before the apex (very much

as in Eiphosoma); hind tibie entirely black behind.

302 HYMENOPTERA.

EIPHOSOMA.

Eiphosoma, Cresson, Proc. Ent. Soc. Phil. iv. p. 52, fig. 5 (1865); Proc. Acad. Phil. 1878,

p. 380.

Cresson described this genus for the reception of four species from Cuba, later on

adding two others from Mexico. iphosoma is allied to Cremastus and Angitia,

Holmgren.

————----— 1. Eiphosoma mexicanum. (Ephiosoma mexicanum, Tab. XII. fig. 31.)

Eiphosoma mexicana, Cresson, Proc. Acad. Phil. 1878, p. 380 (?)*.

Hab. Mexico, Cordova (Sumichrast)!; Guatemata, San Geronimo (Champion).

Apparently a not uncommon species. The extent of black on the legs, thorax, and

abdomen varies. What appears to be a specimen of this species from Presidio, Mexico

(Forrer), is only one half of the usual size.

~~ 2. Eiphosoma vitticolle.

Eiphosoma vitticollis, Cresson, Proc. Ent. Soc. Phil. 1865, p. 58 (¢ 9 )*; Proc. Acad. Phil. 18738,

p- 381°.

Hab. Muxico, Valladolid in Yucatan (Gaumer), Orizaba, Cordova (Sumichrast ?,

Bilimek).— ANTILLES, Cuba !.

As in the preceding species, the amount of black varies.

__-—__—— 3. Kiphosoma aztecum.

Eiphosoma azteca, Cresson, Proc. Acad. Phil. 1873, p. 881 (g ?)*.

Hab. Mexico, Orizaba, Cordova! (Sumichrast).

Allied to the Cuban £. nigrovittatum.

PANISCUS.

Paniscus, Schrank, Fauna Boica, ii. p. 311, nota (1802).

A genus extensively distributed over the globe, but not containing many species.

1. Paniscus geminatus. (Tab. XIII. fig. 5.)

? Ophion chloris, Oliv. Enc. Méth., Ins. viii. p. 509.

Ophion geminatus, Say, Contrib. Macl. Lyc. i. p. 76"; Leconte, Complete Writings of Thomas Say,

1. p. 379.

Paniscus rufus, Brullé, Hist. Nat. Ins. Hymén. iv. p. 1557.

Paniscus geminatus, Norton, Proc. Ent. Soc. Phil. i. p. 864 (1863)°; Cresson, Proc. Acad. Phil.

1873, p. 382°.

PANISCUS. ° 303

Hab. Norta America, United States }3—Mextico, Orizaba, Cordova (Sumichrast *) ;

GUATEMALA, Totonicapam 8500 to 10,000 feet, Capetillo, San Gerénimo, Sinanja,

Senahu (Champion); Nicaracua, Chontales (Belt); Costa Rica, Irazu, Cache (Rogers) ;

Panama, Bugaba 800 to 1500 feet, Volcan de Chiriqui 2500 to 4000 feet.—Soura

AMERICA? ; West Inp1Es 2.

A common and widely distributed species. P. geminatus varies greatly in size; the

flagellum of the antenne varies in colour from black to rufous; the amount of yellow

on the head varies also, and the apical segments of the abdomen are sometimes

fuscous.

2. Paniscus tinctipennis.

Fuscus, testaceo variegatus; capite flavo; pedibus pallide testaceis, coxis posterioribus femoribusque posticis

fuscis ; alis fumatis, stigmate testaceo. 9.

Long. 15 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

Antenne a little longer than the body, microscopically pilose; the flagellum dark

fuscous, the scape testaceous. Head yellow, the occiput dark fuscous; the ocellar

region black; the face obscurely punctured, projecting in the middle; mandibles testa-

ceous, the tips black; palpi yellow. ‘Thorax dark fuscous; a line on the pronotum,

the sutures of the mesonotum, a mark below the tegule, the sides of the scutellum, and

the lower part of the metapleura, pale testaceous. Metathorax closely transversely

striated. Abdomen fuscous, the base of the first three segments and their ventral

surface pale testaceous. Wings with a fuscous tinge; areolet minute, not oblique; the

recurrent nervure interstitial.

Differs from P. geminatus in the fuscous colour of the body, in the wings having a

decided smoky tinge, in the expansions on each side of the metathorax being much

more distinct, in the abdomen being broader and not so compressed, and in the petiole

being thicker and shorter compared to the second segment.

3. Paniscus melanostigma.

Rufo-testaceus, mesonoto nigro; capite flavo; flagello antennarum fusco; alis hyalinis, stigmate nigro. 9.

Long. 15 millim.

Hab. Panama, Volcan de Chiriqui (Champion).

Face closely punctured ; metathorax closely transversely striated. Areolet moderately

large, straight, the recurrent nervure received a little beyond the middle; there is no

branch on the cubital nervure.

Easily known from its allies by the black stigma and nervures. ‘The petiole is longer

compared to the second segment (the relative length of the two being as in P. geminatus)

than in P. tinctipennis.

304 HYMENOPTERA.

CAMPOPLEX.

Campoplex, Gravenhorst, Ichn. Europ. iii. p. 453 (1829).

1. Campoplex opimus.

Campoplex opimus, Cresson, Proc. Acad. Phil. 1878, p. 382 (?)’.

Hab. Mexico, Cordova! (Sumichrast).

2. Campoplex tepanecus. (Tab. XIII. fig. 1.)

Campoplex tepanecus, Cresson, Proc. Acad. Phil. 1873, p. 382 (¢ 2)°

Hab. Mexico, Pinos Altos in Chihuahua (Buchan-Hepburn), Orizaba (Sumichrast *),

Cuernavaca (Bilimek); GuateMaLa, San Gerdnimo (Champion).

A variable species in size and coloration.

3. Campoplex guatemalensis.

Rufo-fuscus; capite, antennis, coxis, trochanteribus, femoribus tarsisque posticis, nigris; tibiis tarsisque

anterioribus albis.

Long. 15-16 millim.

Hab. GuatemMata, San Gerénimo (Champion).

Surface covered with a dense silvery-white pubescence, which is especially long on

the face, the sides of the scutellum, the pleure, and the metanotum ; closely punctured,

running into striations in the oblique hollow on the mesopleure and on the metanotum,

which latter has an arcuated transverse keel at the base, behind which the punctuation

is finer; the centre of the metanotum hollowed; scutellum closely punctured. Petiole

shining, impunctate; postpetiole aciculate and black above; the other segments also

black above, the second and third finely and closely punctured; the ventral surface is

honey-yellow, the sides rufous, wanting the fuscous tint noticeable on the thorax. The

legs are pilose, the tibiee (especially the hind pair) being covered with a very stiff pile;

the extreme tips of the front tarsi, and the apical halves of the middle tarsi, black ;

the four hind coxe more or less rufous. Wings hyaline, with a faint fuscous tint ;

_areolet triangular, pedunculated. Antenne three fourths of the length of the body;

scape rufous. Palpi and mandibles yellow.

A larger and more robust species than C. tepanecus, the wings longer, the metanotum

much more deeply excavated, the postpetiole black and strongly aciculated,

4. Campoplex lacivius.

Campoplex lacivius, Cresson, Proc. Acad. Phil. 1878, p. 883 (¢)?.

Hab. Mexico, Cordova! (Sumichrast).

CAMPOPLEX. 305

5. Campoplex verzpacis. (Tab. XIII. fig. 3.)

Niger ; mandibulis, palpis, apice coxarum anticarum, trochanteribus, femoribus, tibiis tarsisque anterioribus,

tibiisque posticis (apice excepto), flavis; abdomine rufo; alis hyalinis, fere fuscis.

Long. 15 millim,

Hab. Mexico (Bilimek); Guatemata, Senahu (Champion).

The face, the sides of the scutellum, the pleura, and the metanotum covered with a

rather long, the rest of the body with a shorter and more sparse, silvery-white pubescence.

Antenne about two thirds the length of the body; stout. Head and thorax closely

punctured, the central depression on the mesopleura striated. Scutellum with the

punctures not so closely packed together and larger; the punctures on the metanotum

running into striations. Centre of the metanotum hollowed, widest at the apex.

Petiole shining, the postpetiole and the remaining segments black above. Areolet.

triangular, sessile.

The male has the four anterior coxe yellow, the hind tibiz lined with black on the

lower side, otherwise as in the female.

6. Campoplex aurifer.

Campoplex aurifer, Cresson, Proc. Acad. Phil. 1873, p. 383 (¢ ¢ )’.

Hab. Mexico, Orizaba (Sumichrast 1).

—— 7. Campoplex flavipennis.

Campoplex flavipennis, Cresson, Proc. Acad. Phil. 1873, p. 383 ( 9)’.

Campoplex flavipennis, var. terminalis, Cresson, loc. cit. p. 383 (¢).

Hab. Muxico, Orizaba (Sumichrast 4).

8. Campoplex melliventris.

Campoplex melliventris, Cresson, Proc. Acad. Phil. 1873, p. 383 (¢)*.

Hab. Mexico, Cordova (Sumichrast 1).

9, Campoplex lectus.

Campoplex lectus, Cresson, Proc. Acad. Phil. 1873, p. 384 (¢)’.

Hab. Mexico, Cordova (Sumichrast 1).

10. Campoplex mexicanus. (Tab. XIII. fig. 4.)

Niger; abdomine pedibusque posticis rufis; pedibus anterioribus, mandibulis, palpis tegulisque, flavis; alis

hyalinis, nervis nigris, stigmate fusco. 9.

Long. 10 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne stout, inclining to fuscous on the underside towards the apex; scape

yellowish beneath. Head densely covered with long silvery-white pubescence. Thorax

BIOL. CENTR.-AMER., Hymenopt., August 1886. 2 RR

306 HYMENOPTERA.

closely punctured, covered with silvery-white pubescence, which is longest on the

pleure, the sides of the scutellum, and the metathorax; a deep furrow runs down the

centre of the metanotum. Abdomen more than double the length of the head and

thorax together, pilose; the two basal segments black above; sheath of the ovipositor

pilose. Wings short; areolet with the lateral nervures scarcely meeting at the top,

not pedunculated. Anterior coxe black at the base; the posterior coxe and the hind

trochanters entirely black.

11. Campoplex gnarus.

Campoplex gnarus, Cresson, Proc. Acad. Phil. 1873, p. 384 (d)*.

Hab. Mexico, Orizaba (Sumichrast 1),

12. Campoplex calcaratus.

Campoplex calcaratus, Cresson, Proc. Acad. Phil. 1878, p. 384 (g 2).

Hab. Mexico, Orizaba (Sumichrast !).

13. Campoplex macilentus.

Campoplex macilentus, Cresson, Proc. Acad. Phil. 1878, p. 384 (?)'.

Hab. Muxico, Cordova (Sumichrast 1).

14. Campoplex divisus. (Tab. XIII. fig. 2.)

Campoplex divisus, Cresson, Proc. Acad. Phil. 1873, p. 385 (¢)’.

Hab. Mexico, Orizaba (Sumichrast 1).

15. Campoplex maceratus.

Campoplex maceratus, Cresson, Proc. Acad. Phil. 1878, p. 885 (¢)'.

Hab. Mexico, Cordova (Sumichrast 1).

16. Campoplex nefastus.

Campoplex nefastus, Cresson, Proc. Acad. Phil. 1878, p. 385 (¢)*.

Hab, Mexico, Cordova (Sumichrast 1).

17. Campoplex legalis.

Campoplex legalis, Cresson, Proc. Acad. Phil. 1873, p. 385 (¢)*.

Hab. Mexico, Mirador (Dr. Sartorius +).

_—-~--~» 18. Campoplex inzqualipes.

Campoplex inequalipes, Cresson, Proc. Acad. Phil. 1878, p. 386 (2)'.

Hab. Mxxico, Orizaba (Sumichrast 1).

LIMNERIA. 3807

LIMNERIA.

Limneria, Holmgren, Sv. Ak. Handl. 1858, p. 51; Gifv. 1858, p. 326; Act. Ac. R. Suec. Consp.

xv. (1860).

1. Limneria albispina. (Tab. XI. fig. 13.)

Nigra; pedibus rufis, mandibulis, palpis, trochanteribus anterioribus, tibiis posticis tarsorumque basi, albis ;

tarsis posticis (basi excepta) tibiarumque apice nigris; alis hyalinis, stigmate nigro. 9.

Long. 9 millim.; terebra 3 millim.

Hab. Mexico, Ciudad in Durango 8100 feet (Forrer).

Antenne moderately stout, microscopically pilose, as long as the abdomen. Head

and mesonotum semiopaque, finely punctured; the middle of the mesopleure shining

and impunctate; the rest longitudinally striated ; metathorax finely and closely punc-

tured, covered with longish silvery-white hair; the punctures in the middle of the

metanotum almost forming striations. Petiole longish, narrow at the base, the apex

clavate, shining, aciculate; the other abdominal segments coarsely aciculate at the base,

pilose at the apex and sides. Abdomen somewhat laterally compressed on the lower side

at the apex. Hind tibie with a narrow black ring towards the base; tibial spurs

longish and white; nearly the basal half of the metatarsus and the extreme base of the

other segments also white.

2. Limneria alpestris.

Nigra; pedibus rufis, basi coxarum anterioribus tarsisque posticis nigris, basi tarsorum posticorum albo;

alis fere fuscis, nervis nigris. 2.

Long. 8 millim.; terebra fere 2 millim.

Hab. Mexico, Ciudad in Durango 8100 feet (Forrer).

Head closely pilose; metapleura sparsely clothed with longish white hairs; meta-

thorax not so strongly punctured as in ZL. albispina, and, as in that species, there are no

clearly defined arew, only a transverse keel round the top and one down each side.

Areolet subpetiolate above, triangular, slightly angled beneath where the recurrent

nervure is received near the apex. Similar in form and clothing to L. albispina, but

with the body more slenderly built; the abdomen longer and narrower compared to the

thorax, and not punctured, only faintly aciculate; the petiole longer and narrower,

narrow at the base, clavate at the apex, and longer than the second segment; the

ovipositor. shorter, being not much longer than the three apical segments ; there is

no white on the hind femora; and the wings are fuscous tinted, the stigma livid

testaceous.

3. Limneria sonorensis. (Tab. XIII. fig. 6.)

Hab. Mexico, Northern Sonora (Morrison).

Similar in coloration to L. albispina, except that the abdomen is broadly reddish-

2 BR 2

308 HYMENOPTERA.

brown beneath and at the apex of the second and third segments, the latter only broadly

so at the sides ; differing otherwise from that species in the shorter, more clavate abdomen

and distinct metathoracic aree. Antenne stout, nearly as long as the abdomen, densely

covered with short pile; the joints not clearly separated; scape large, shining. Face

densely covered with longish silvery-white hair, the front and vertex finely punctured,

opaque ; mandibles and palpi yellow. Thorax opaque, the mesonotum minutely, the

pleuree more strongly, punctured; metathorax as strongly punctured as the pleure; the

centre of the metanotum transversely striated; the two median arez clearly defined ;

the lateral area indistinct. Abdomen opaque, finely punctured; the basal part of the

petiole shining, impunctate; the apical portion suddenly dilated, opaque. Areolet

subpetiolate, triangular, the recurrent nervure received in the middle.

4, Limneria montezuma.

Nigra; pedibus anterioribus sordide rufis, mandibulis palpisque flavis; alis hyalinis, nervis nigris, tegulis

flavis. ©.

Long. fere 8 millim.; terebra 1 millim.

Hab. Mexico (Bilimeh).

Head densely covered with silvery-white pubescence; the top more sparingly pubes-

scent and closely and somewhat coarsely punctured. Thorax opaque, closely punctured,

covered with silvery-white pubescence, which is longest on the metathorax. Scutellum

more shining than the mesonotum, finely punctured; margined round the apex. Meta-

thorax with four aree—one basal, occupying the entire base; two lateral, large; and a

median, rounded at the base and becoming dilated before the middle. Metathoracic

spiracles small, ova], placed near the base. Abdomen opaque, the sides and apex

pilose; the basal half of the petiole shining, impunctate, the apical part finely punc-

tured, opaque; second segment obscure yellow beneath; the other segments obscure

yellow at their junction. Areolet 4-angled, scarcely pedunculated, oblique, longish.

Legs densely covered with white pubescence ; the four anterior ones obscure testaceous

red, the middle pair inclining to fuscous behind; the coxe black.

~ 5. Limneria (?) insolens.

Limneria (?) insolens, Cresson, Proc. Acad. Phil. 1873, p. 886 (¢ ?)’.

Hab. Mexico, Orizaba, Cordova (Sumichrast 1).

NONNUS.

Nonnus, Cresson, Proc. Acad. Phil. xxv. p. 386 (18738).

Two species were placed in this genus by Cresson; both inhabit Central America.

NONNUS.—GROTEA. 309

1. Nonnus atratus. (Nonus niger, Tab. XII. fig. 8.)

Nonnus atratus, Cresson, Proc. Acad. Phil. 1873, p. 387 (2).

Hab. Mexico, Cordova ( Sumichrast 1); Panama, Volcan de Chiriqui 2500 to 4000 feet

(Champion).

2. Nonnus antennatus. (Nonus entennatus, Tab. XII. fig. 9.)

Nonnus antennatus, Cresson, Proc. Acad. Phil. 1873, p. 387 (¢ ?)'.

Hab. Mexico, Orizaba (Sumichrast +).

GROTEA.

Grotea, Cresson, Proc. Ent. Soc. Phil. iii. p. 397, figg. 1 a—c (1864).

This genus was founded by Cresson upon G. anguina, from New Jersey and New

York, a second species from Mexico being subsequently added by the same author; I

am now able to add yet another from Mexico. Cresson (op. cit. p. 399) states that both

sexes of G. anguina were reared from a raspberry-stem, together with a small species

of Crabro.

<== 1, Grotea mexicana.

Grotea mexicana, Cresson, Proc. Acad. Phil. 1878, p. 413 (¢ 2)?

Hab. Mexico, Orizaba (Sumichrast 1).

2. Grotea fulva. (Tab. XII. fig. 27.)

Fulva, flavo variegata; apice antennarum lineisque 2 metathoracis nigris, lineis 3 mesonoti fuscis; alis

hyalinis, fascia nigra, nervis nigris. 9.

Long. 20 millim.; terebra 9 millim.

Hab. Mexico, Presidio (Forrer).

Smooth, shining, impunctate. Head and thorax for the greater part yellow. Antenne

stout, almost thickened towards the apex, nearly glabrous. There is a small elongated

area at the base of the metanotum in the centre, and from it a line runs to join a

longitudinal keel on the inner side of the spiracles; on the outer side of the spiracles is

another keel. The spiracles on the metathorax are long, curved, narrow. There is a

black line running on the top of the petiole to beyond the middle, and another, but

shorter one, on each side. The four front legs are almost entirely yellow. The

fascia in the fore wings is small, and situated at the apex, partly in the radial and

partly in the cubital cellule.

810 HYMENOPTERA.

MESOCHORWUS.

Mesochorus, Gravenhorst, Ichn. Europ. ii. p. 960 (1829).

1. Mesochorus totanacus.

Mesochorus totanacus, Cresson, Proc, Acad. Phil. 1873, p. 388 (9)'.

Hab. Mexico, Orizaba (Sumichrast ').

PRISTOMERUS.

Pristomerus, Curtis, Brit. Ent. p. 624 (1836).

1. Pristomerus mexicanus.

Pristomerus mexicanus, Cresson, Proc. Acad. Phil. 1873, p. 388 (¢ )’.

Hab. Mexico, Mirador (Dr. Sartorius 1).

EXETASTES.

Exetastes, Gravenhorst, Ichn. Europ. iii. p. 895 (1829).

1. Exetastes vittatipes.

Ezetastes vittatipes, Cresson, Proc. Acad. Phil. 1878, p. 889 (¢? )’.

Hab. Mexico, Cordova (Sumichrast 1).

2. Exetastes tarsalis.

Exetastes tarsalis, Cresson, Proc. Acad. Phil. 1873, p. 389 (¢ 9)’.

Hab. Mexico, Cordova (Sumichrast *).

8. Exetastes mexicanus.

Exetasies mexicanus, Cresson, Proc. Acad. Phil. 1873, p. 389 (¢)’.

Hab. Mexico, Mirador (Dr. Sartorius +).

SCOLOBATES.

Scolobates, Gravenhorst, Ichn. Europ. iii. p. 857 (1829).

1. Scolobates (?) varicornis. (Tab. XII. fig. 5.)

Niger; capite, antennis, mesonoto antice, pedibus anterioribus tarsisque posticis, fulvis; alis fuscis, fascia

medio fere hyalina. <¢.

Long. 10-11 millim.

Hab. GuatemMaa, San Gerénimo (Champion).

Antenne stout, longer than the body; microscopically pilose; fulvous, inclining to

yellow beyond the middle, the apical eight joints black; the third joint nearly as long

as the two succeeding united. Head shining, impunctate, and nearly glabrous on the

top; the face projecting, but not largely nor sharply above, bearing shallow punc-

SCOLOBATES.—BANCHUS. 311

tures, and covered with longish fulvous hair; the antenne originating from tubercles ;

the clypeus depressed round the base; eyes oblong, comparatively small; the space

behind the eyes considerably developed. Thorax shining, impunctate; mesonotal

sutures obsolete; scutellum moderately raised, longer than broad, the sides not keeled ;

metathorax depressed at the extreme base, and having a gradual slope to the apex. the

spiracles round, and situated a little before the middle. Abdomen a little longer than

the head and thorax united, shining, impunctate, covered with a dense fuscous pile;

becoming gradually widened to the apex of the fourth segment, thence gradually

narrowed ; the apices of the second and following segments and the ventral surface

testaceous. Legs stout, the tarsi densely pilose; hind tibize curved inwardly, the spurs

short and thick; metatarsus narrowed and bent at the extreme base, scarcely so long

as the three following joints united; the second tarsal joint longer than the third, the

latter twice the length of the fourth, the fifth joint (with the claws) a little longer

than the second. There is no areolet; the recurrent nervure is interstitial.

In this insect the neuration of the wings is as in Heteropelma sonorensis and Reta-

nisia; the much thicker hind tibie and tarsi (the tarsi, moreover, being longer than

the tibiz), the non-lobed mesonotum, and the smaller eyes (which do not reach so near

to the clypeus) sufficiently distinguish it from the latter. The short antenna, the large

eyes (reaching quite near to the mouth), the long compressed abdomen, the broader

scutellum, and the more slender tarsi (of which the metatarsus is also longer), separate

Heteropelma from S. varicornis.

BANCHUS.

Banchus, Fabricius, Ent. Syst. Suppl. p. 209 (1798).

1. Banchus mexicanus. (Tab. XII. fig. 6.)

Fulvus, flavo variegatus; femoribus posticis nigris; alis fulvis, stigmate flavo. ¢.

Long. 15 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne not much longer than the head and thorax united, involute, stout, micro-

scopically pilose. Head much broader than long, not much developed behind the eyes;

the latter curve round on the top, and reach nearly to the base of the mandibles; an

oval depression over each antenna; the face slightly projecting in the middle; the

clypeus transverse at the apex, the sides oblique; the mandibles without teeth; the

face and clypeus punctured; yellow, the depressions over the antenne and the space

between them black; the centre of the face and the base fulvous; the tips of the

mandibles black, the palpi yellow. Thorax rather strongly and closely punctured, fulvous;

the scutellum not so strongly punctured and ending in a sharp nipple-like point;

scutellum (except the point and a line down from it), a spot in front of the mesonotum,

a quadrate mark beneath the tegule, a broad mark on the mesopleure in front, and

312 HYMENOPTERA.

the middle of the metanotum, yellow; the base of the metanotum, two oblique marks

on the pleure, a line in front of the scutellum, and the sternum more or less, black.

Abdomen yellow, the petiole (except at the apex), the basal half of the second segment

and the other segments at the base, fulvous. The anterior legs fulvous, inclining to

yellow in front. The middle legs fulvous; the coxe in front, the tibize and the tarsi in

front at the base, yellow; the femora have a black line behind. The hind coxe and

femora are black, except that the former have a dark fulvous mark behind and the

latter are fulvous at the base and apex; the hind tibie are yellow, broadly black at

the apex; the hind tarsi yellow, fulvous at the tips of the joints. Areolet large, the

lateral nervures a little curved, not united at the top; the recurrent nervure is received

in the basal third.

Fam, BRACONIDA.

The species of this extensive family inhabiting the Central and Southern regions of

America are hardly known, and even our knowledge of the species found in North

America is comparatively slight. The larger species only are known, the smaller and

more obscure forms not having been collected at all. Under these circumstances it is

impossible to say if the Braconide are as numerously represented in the Neotropical

Region as they are in the Palearctic.

Division CYCLOSTOMI.

This division contains those species which have a semicircular opening between the

clypeus and the mandibles. It has been divided by Forster (Verh. pr. Rhein. xix.)

into numerous subfamilies, but these are based on such slight characters that I have

in some cases not adopted them. Moreover to do so would necessitate, to carry out

his scheme consistently, the creation of some new divisions; and this I am not at

present prepared to do. The “‘ Cyclostomi” contains some of the largest species in

the family, and is apparently very numerously represented in the Neotropical Region.

Subfam. BRACONINA.

BRACON.

Bracon, Fabricius, Syst. Piez. p. 102 (1804); Wesmael, Nouv. Mém. Acad. Brux. 1838, p. 7;

Forster, Verh. pr. Rhein. xix. p. 235.

Bracon is not so numerously represented in our region as the closely allied genus

Iphiaulax, which is chiefly distinguished from it by having several transverse, usually

striated, furrows on the abdomen, that immediately behind the petiole being bifurcated

on either side. This latter character is the best mark of distinction, and it would be —

difficult without it to say how the two are to be separated, for in some species the

BRACON. 313

posterior transverse furrows tend to become obsolete. Myosoma, Brullé, I have not

adopted, as it is only distinguished by having the legs more pilose than is usual with

the majority of the species of Bracon ; in this respect there is so much variation that it

is impossible to draw a hard-and-fast line.

I have divided the genus into groups. The chief points of distinction are to be

found in the form of the head and abdomen. In the abdomen the form of the petiole

shows a good deal of variation. The shape of the eyes and of the frontal region is

likewise of importance. The alar neuration does not exhibit much variation. I have,

in most cases, not given the number of joints in the antenne: in the first place,

they are very difficult to count, owing to their being so closely soldered together ;

and, secondly, because the tips are broken off in nearly all the specimens before

me.

i. Abdomen not punctured nor striated.

The group of B. coMPUNCTOR.

Antenne as long as the body, the depression between them not deep. Abdomen with a

stout keel down the centre of the second segment; the depression on the sides

rather narrow, not reaching to the apex ; suturiform articulation nearly transverse,

not reaching to the sides, dilated at the apex and also narrowly backwards; a

furrow on the third segment. Ovipositor longer than the body, which is black,

except at the base of the abdomen. Wings black, with a hyaline band at the stigma.

I am not sure whether this species should not be treated as an Jphiaulax, but the

suturiform articulation is not bifurcated at the sides, although there is a furrow on

the third segment.

1. Bracon compunctor. (Tab. XIII. fig. 11.)

Niger ; abdominis basi lete rufa; alis fuliginosis, fascia medio hyalina ; terebra quam corpus multo longiore.

Long. 12-13 millim.; terebra 15-16 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Antennee longer than the body; 70-74 jointed, the basal joint nearly as long as the

third and fourth together, these latter being subequal. Head covered with longish

black hair; face almost transverse, scarcely punctured; clypeus not projecting and

without any depression at its base; front depressed in the middle (the depression

reaching to the ocelli), and with a narrow furrow down its centre. Thorax shining,

sparsely covered with black hair. The central part of the petiole wide, becoming

slightly enlarged towards the apex, the furrows broad and deep; a narrower furrow a

little below the side, which is sharply ridged. Abdomen longer than the head and

BIOL. CENTR.-AMER., Hymenopt., October 1886. 288

314 HYMENOPTERA.

thorax together, if anything, narrower than the mesothorax, and of nearly equal width

throughout. The recurrent nervure is interstitial ; the second cubital cellule is shorter

than the third; the cubitus is almost straight at the first cubital cellule.

The group of B. FRUSTRATUS.

Eyes large, oval, reaching nearly to the apex of the clypeus, converging a little near the

top. Head broadly developed behind the eyes; front broadly, but not deeply,

depressed. Antenne stout, microscopically pilose, not longer than the body, origi-

nating from stout tubercles, so that there is a deep depression between them, the

depression extending nearly to the middle of the face. Mesosternal furrow obsolete.

Petiole semiperpendicular, deeply furrowed along the sides. A wide furrow down

either side of the second segment. Suturiform articulation deeply sinuated.

A. Thorax black.

* Central portion of the petiole of nearly equal breadth throughout, or at least not

P Pp g

narrowed towards the apex.

2. Bracon frustratus, (Tab. XIII. fig. 8.)

ger, nitidus; abdominis segmentis 1°-4™ rufis; alis fuliginosis.

Long. 11-12 millim.; terebra 16-17 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Antenne scarcely so long as the body, tapering towards the apex, the scape curved

beneath, produced into a club at the apex. Face shining in the middle below the

antenne, the sides and mouth-region rugose, but not strongly so; vertex and occiput

shining, impunctate; an oval depression above each antenna, separated by a ridge, which

is not so high as the outer side of the depression and has a fine keel down its centre.

Palpi inclining to fuscous, especially at the apex; pilose. Clypeus projecting at the

apex, and having a semicircular ridge near the base. The centre of the petiole is raised

considerably above the sides, especially at the apex, but excavated in the centre at the

base; the lateral furrow very wide at the apex. The furrow down the side of the

second segment is wide and deep, and runs almost from the furrow on the petiole, but

“is still separated from it. /The semicircular suturiform articulation is narrowér than

7 this furrow and terminates a very little beyond it, 2. e. it does not reach the side of the

segment. ‘The abdomen is not longer than the head and thorax together; broader

than the mesothorax, widening to the end of the third segment, whence it gradually

(but slightly) narrows to the apex. The cubitus is sharply elbowed near its origin; the

first cubital cellule is about one third longer than broad on the lower side; the second

cubital cellule is, on the upperside, about equal in length to the third, on the lower

side clearly longer than it.

BRACON. 315

“* Central portion of the petiole broad at the base, narrowed towards the apex.

1 (2). Palpi and legs black ; the face over the clypeus rough crenulated ;

the cheeks strongly punctured . . . . . » + « gracilescens.

2 (1). Palpi and fore tibie and tarsi white; the face over the clypeus and

the cheeks not very strongly punctured . . . . . « . . . albipalpis.

X 3. Bracon albipalpis. (Tab. XIII. fig. 7.)

Niger; abdomine rufo, apice nigro; palpis, trochanteribus, basi femorum, tibiis tarsisque anterioribus, albis ;

alis nigris. .

Long. 10°5 ‘millim.

Hab. Panama, Bugaba (Champion).

Head large, cubital, strongly developed behind the eyes, broader than the meso-

thorax ; smooth, shining, the sides of the face closely rugose ; clypeus scarcely projecting,

a narrow, sharp, semicircular carina at its base; the depression in front broad, reaching

to the hinder ocelli, without a distinct ridge in the centre, the depression between (and

below) the antennz wide and deep. Thorax shining, impunctate. The raised central

part of the petiole has straight sides and is deeply depressed at the base, the depression

extending to the middle; the lateral furrow is deep and wide, and originates a little

before the middle; the furrow down the side of the second abdominal segment deep;

the suturiform articulation is wide and deep, its bend in the middle somewhat sharp,

not forming a semicircle. Abdomen longer than the head and thorax together, bulging

out in the centre, where it is distinctly broader than the mesothorax ; the last segment

forms a membranous projection, incised in the middle, over the last ventral one.

4, Bracon gracilescens. (Tab. XIII. fig. 9.)

Niger, nitidus; abdominis segmentis 1°-4™ rufis, terebra quam corpus fere longiore; alis fuliginosis. 9 ,

Long. 10 millim.; terebra fere 11 millim.

Hab. Nicaracua, Chontales (Janson).

Similar in coloration and sculpture to B. frustratus, but much narrower and some-

what smaller; the clypeus is not so projecting, and there is no semicircular ridge at its

base ; the depression above the antenne is not so deep, nor is it divided in two by a

sharp and distinct ridge; the middle lobe of the mesonotum is not so sharply separated

and raised above the lateral one; the abdomen is longer, and distinctly longer than the

head and thorax together; the ovipositor is shorter; and the second cubital cellule

is longer.

289 2

apm

a -\

ere a beanie

eeu SR RRR SOLENT

316 HYMENOPTERA.

B. Thorax red; the lateral furrows on the second abdominal segment not so

deep nor distinct.

5. Bracon bugabensis. (Tab. XIII. fig. 10.)

Luteus; antennis, capite, prosterno, abdominis apice pedibusque, nigris; alis fere hyalinis, fascia medio

apiceque fumatis. 9.

Long. 10 millim.; terebra 9°5 millim. .

Hab. Panama, Bugaba (Champion).

Antenne as long as the body; the third joint straight, about one fourth longer than

the next. Face aciculated; clypeus almost transverse at the apex, not projecting much,

a longish depression above it on either side; vertex depressed above the antenne, the

ocelli placed at the end of the depression and slightly raised. ‘Thorax flat above; the

scutellum scarcely raised, its sides at the apex depressed and distinctly separated; a

broad and deep oblique furrow on the mesopleura. Petiole uniformly raised in the

centre; the edge of the raised part with a distinct border; the side depressed below it

and with a broad furrow. Abdomen with a triangular field (bounded by a deep furrow)

in the centre, and an oblique furrow on either side, of the second segment; a deep

turrow along the sides; apical segment with longish hair. Legs densely covered with

ereyish hair; apical joint of the trochanters piceous; four anterior knees testaceous ;

four anterior tarsi whitish, except the apical joint; spurs testaceous. The cloud on

the fore wings extends across from the first cubital cellule, becoming narrower as the

epposite side of the wing is reached ; the apical cloud commences a little beyond the

second transverse cubital nervure; the hind wings are smoky, with a fainter band

before the apex.

/ The group of B. DISTINGUENDUS.

Second abdominal segment not furrowed at the sides, and without a keel down the

centre; suturiform articulation straight or but slightly waved.

Differs from the group of B. frustratus only in the second segment not being furrowed

laterally, and in the suturiform articulation not being so acutely bent.

1 (1

. Thorax for the greater part, or entirely, black.

2 (7). Face roughly reticulated or punctured; the cheeks keeled.

3 (4). Abdomen red, black at the apex . . . ~ 2 « « «© distinguendus.

4 (8). Abdomen black, red laterally at the base.

5 (6). Ovipositor as long as the thorax and abdomen together; wings

semihyaline towards the apex . . . . . . . . « « . Qpicipennis.

6 (5). Ovipositor scarcely longer than the abdomen; wings uniformly

fuscous ; sides of the abdomen broadly white. . . . . . heterodoxus.

7 (2). Face not roughly punctured or reticulated; abdomen for the

greater part red.

8 (9). Middle lobe of the mesothorax red . . . . . 1. 4. « « morrisoni.

BRACON. 317

)« Mesothorax entirely black.

10 (13). Eyes not reaching to the base of the mandibles.

). Apex of the abdomen black. . . . . . 2. 2 ss «© « . Sedulus.

12 (11). Apex of the abdomenred .. . se ew ew we wf CxCElsUS.

13 (10). Eyes reaching to the base of the mandibles ~ 0 2 2 « © « Chontalensis.

14 (1). Thorax red, wholly or for the greater part.

15 (20). Abdomen black, more or less white laterally and beneath.

16 (19). Fore legs black.

17 (18). Mouth black ; ovipositor shorter than the abdomen. . . . . melanostoma.

18 (17). Mouth reddish; ovipositor longer than the abdomen . . . . erythrostoma.

19 (16). Forelegsred . 2. 1. we ee ew ee ew ef RiCAraguensis.

20 (15). Abdomen rufous.

21 (22). Head and legs black . . . 2 2 1 1 1 ee ee ee Spain.

22 (21). Head and legs rufous.

23 (24). Anterior tibie and femora black . . . . . . . . « « « albispina.

24 (23). Anterior tibie and femora pale testaceous . . . . « « . « forreri.

~ 6. Bracon distinguendus. (Tab. XIII. fig. 12.)

iger, crassus; abdominis segmentis 1°-4™ rufis, articulatione suturiformi late sinuata; alis fuscescentibus,

apice vix hyalinis ; terebra quam abdomen longiore. 9.

Long. 9 millim.; terebra 6 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Antenne rather stout, microscopically pilose; the scape but slightly produced at the

apex beneath. Head cubital, broader than long, retreating behind; front depressed,

broadly, but not very deeply, a furrow leading down from the ocelli in the centre.

Face irregularly and rugosely reticulated; a sharp keel running down from the outer

side of each antenna, and another keel parallel to the eyes, the space enclosed by these

two keels being transversely reticulated; clypeus finely punctured, projecting. Palpi

long, sparsely pilose. Thorax stout; the middle lobe of the mesonotum scarcely raised

or separated from the lateral; the furrows almost obsolete. Metathorax short, broad,

gradually sloping to the apex. Abdomen not much longer than the thorax, broad at

the base, gradually narrowing from the second segment to the blunt apex. The raised

central part of the petiole is depressed at the base and becomes slightly narrowed |

towards the apex; the lateral part is broader than the central, and has a shallow,

shining, furrow down its centre. The suturiform articulation is broad, curved back-

wards in the middle, and shallow. Legs stout, the tibie and tarsi densely pilose,

opaque; femora shining. The wings are lighter towards the apex; the recurrent

nervure is received in front of the first transverse cubital one; the second cubital

cellule is a little shorter than the third; at the base the cubitus forms a round curve.

A broad, stout insect with large wings, and readily known from the following two

species by the red abdomen and shorter ovipositor.

318 HYMENOPTERA.

7. Bracon apicipennis. (Tab. XIII. fig. 13.)

iger ; ventris basi late rufa; alis fuscescentibus, litura hyalina; terebra quam corpus fere longiore; articula-

tione suturiformi vix sinuata. 9.

Long. 9 millim.; terebra 7:5 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Antenne stout, as long as the thorax and abdomen together, the scape not produced

at the apex beneath. Head narrower than the mesothorax, not much developed behind

the eyes; front depressed, but not broadly, a broad and deep furrow leading down

from the ocelli. Face rugosely punctured, two keels on each side, enclosing transverse

reticulations; clypeus projecting, the apex margined, a broad semicircular depression

at its base. Thorax stout, the middle lobe of the mesonotum not clearly separated

from the lateral one; scutellum not raised above the mesonotum; metathorax short,

broader than long, and having a gradual but somewhat rounded steep slope to the apex,

the oblique furrow at its side wide and deep. Petiole with the central part raised

considerably above the lateral part and deeply excavated at the base; the lateral furrow

very deep and broad. The second abdominal segment is slightly depressed on each side

at the base. The suturiform articulation is slightly bent backwards. The abdomen is

shorter than the head and thorax together, being not much longer than the thorax.

Cubital nervure broadly curved at the base; the recurrent nervure received a little in

front of the first transverse cubital one; the second cubital cellule distinctly shorter

than the third.

‘“ 8. Bracon heterodoxus.

iger ; abd omine, lateribus et ventre sordide albis; articulatione suturiformi sinuata; terebra quam abdomen

- fere lcngiore; alis fuliginosis. 92.

Long. 8°5 millim.

Hab. Guatemata, Las Mercedes 3000 feet (Champion).

Antenne moderately stout ; basal joint as long as the third and fourth joints together,

not produced at the apex beneath. Front excavated, but not very deeply, the centre

aciculate; the ocelli raised; face coarsely rugose; a keel down the side of the eyes;

clypeus not projecting. Petiole not much longer than broad, the central part flat,

large, excavated deeply at the base; the lateral furrow short, broad, moderately deep.

The suturiform articulation is narrow and curved backwards in the middle. The

abdomen is scarcely longer than the head and thorax together; a little longer, and

slightly broader in the middle, than the thorax, and narrowed to a blunt point at

the apex.

The head is longer than in B. apicipennis, being much more developed behind

the eyes. The wings are torn beyond the stigma, so I cannot describe the

neuration.

BRACON. 319

9. Bracon erythrostoma.

Niger; ore, pro- et mesothorace coxisque anticis, rufis; alis fuliginosis. 9.

Long. 8 millim.; terebra 5-5 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet, Bugaba (Champion).

Antenne nearly as long as the body, densely pilose; the third and fourth joints

subequal; the basal joint produced at the apex on the underside. Head shining,

retreating somewhat sharply behind the eyes; the top impunctate, the face coarsely

and rugosely reticulated and with three stout keels running down the centre; eyes

margined on the underside; clypeus rugosely punctured; front moderately depressed

in the centre, the central furrow wide; the clypeus, the oral region, the mandibles

(except at the apex), and palpi reddish. Thorax shining, impunctate; scutellum

triangular, flattish ; metapleural suture deep, moderately wide. Petiole with the central

part wide, broadly raised in the middle, the bordering furrow narrow, the sides sloping

away from this gradually. Abdomen not much longer than the head and thorax

united, and narrowing from the second segment; second segment considerably shorter

than the third, its apex transverse; the apical ventral segment is large and ploughshare-

shaped ; the apical segments at their junction, and the sides, narrowly, are whitish.

Legs stout, pilose. Wings longish; the cubital nervure with a round curve; the

recurrent nervure received shortly before the transverse cubital one; the second cubital

cellule is, on the lower side, a little longer than the third.

10. Bracon nicaraguensis.

Niger; ore, palpis, orbitis, prothorace, mesothorace, tegulis pedibusque anticis, rufis; abdominis segmentis

marginibus albis, articulatione suturiformi fere sinuata; alis fuliginosis. 9.

dg. Pedibus anterioribus rufis.

Long. 7°5 millim.; terebra 3°5 millim.

Hab. Nicaracua, Chontales (Janson); Panama, Bugaba (Champion).

Closely related to B. erythrostoma, but with the rufous colour on the head more

developed, the occiput being almost entirely of that colour; the palpi are light rufous.

The antenne are scarcely so stout; the anterior legs are entirely rufous, as is also the

mesothorax ; the petiole is more sharply vertical, and has the inner furrow wider; the

abdominal segments are not so broadly lined with white, and the ovipositor is shorter.

11. Bracon laticarinatus.

iger; thorace pedibusque 4 anterioribus rufis; alis fuscis. ¢.

Long. 6. millim.

Hab. Guatema.a, San Gerénimo (Champion).

Very much resembling in form, sculpture, and coloration what I have regarded as

the male of B. nicaraguensis; in coloration differing from that insect in having the

320 HYMENOPTERA.

mouth black (the mandibles only being reddish at the base), and the thorax with only a

little black on the apex of the metanotum; but the chief distinction consists in there

being a broad keel down the second segment, extending a little beyond the suturiform

articulation, and having a depression on either side at the base.

12. Bracon melanostoma.

Niger; pronoto, mesothorace basique coxarum anticarum, rufis; abdominis marginibus albidis; alis fuligi-

nosis. 9.

Long. 9 millim.; terebra fere 4 millim.

Hab. Nicaraaua, Chontales (Janson).

Face rugosely reticulated, with some longitudinal keels; over each antenna is an oval

depression, separated by a broad keel, in the centre of which is a shallow furrow; the

centre of the clypeus dull red; the joints of the palpi dull white at the apex. Petiole

deeply excavated at the base, the central part moderately large and surrounded by a wide

and deep furrow (but not so wide as the part of the petiole on the outer side of it).

Suturiform articulation waved. ‘The third and following segments at the apex, a line

along the sides, and the ventral surface in the centre, whitish. Wings long; the second

cubital cellule on both sides shorter than the third; the recurrent nervure received at a

little distance from the first transverse cubital one. Legs stout, the spurs whitish, the

femora with some long hairs, the tibie and tarsi densely pilose.

Very nearly related to B. erythrostoma, but a little longer; the ovipositor is shorter,

compared to the body; the head (except the mandibles, which are broadly .piceous

towards the apex) is entirely black, as is also the prosternum; the abdomen is longer,

and is broadly white along the sides; the suturiform articulation is curved backwards,

somewhat sharply at the middle; the recurrent nervure is received further from the

first transverse cubital one; and the inner furrow of the petiole is broader and deeper,

the petiole itself being more developed laterally.

13. Bracon morrisoni. (Tab. XIII. fig. 18.)

Niger; mesonoti lobo medio abdomineque rufis, articulatione suturiformi recta; terebra quam abdomen vix

longiore ; alis fuscescentibus. 9.

Long. 8 millim.; terebra fere 4 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne shorter than the thorax and abdomen united; stout, of nearly uniform

thickness throughout, microscopically pilose. Head in front covered with long silvery-

white hair; the orbits externally narrowly red; the face coarsely punctured; the front

opaque and punctured laterally ; the centre shining, impunctate, and slightly depressed, -

the central furrow narrow; eyes projecting, oval; palpi densely covered with white

pubescence. Thorax shining, impunctate ; mesopleure in front and metathorax covered

with long white hair. Mesothorax red, black laterally along the middle lobe, the

BRACON. 321

black colour, however, not reaching the base. Petiole almost perpendicular, its apex

reaching above the thorax; hollowed in the centre, the centre bicarinate, the sides

separated from the central keel by deep depressions. Abdomen scarcely so long as the

head and thorax united, at the base somewhat broader than the thorax, and becoming

gradually narrower to the apex, which is rounded; the sides and ventral surface

sparsely clothed with white hair. Legs stout; the coxe covered with longish white

hair; the tibie and tarsi densely pilose. Wings longish, narrow; the nervures and

stigma dull black; the second cubital cellule on both sides (but especially on the

upper) shorter than the third.

al 14. Bracon sedulus. (Tab. XIII. fig. 14.)

ger; abdominis segmentis 1°-6™ rufis, articulatione suturiformi recta; terebra quam abdomen breviore ;

alis fuscescentibus. 9.

Long. 9 millim.; terebra 4°5 millim.

Hab. Nicaragua, Chontales (Janson).

Antenne as long as the body, tapering towards the apex; the third and fourth joints

shorter than the basal one, and subequal. Face densely covered with long white hair ;

shining, impunctate, transverse ; clypeus not projecting, and not separated from the face

by a groove. Front but slightly excavated; a broad, but not long, furrow leads down

into it from the ocelli, which are raised. Thorax shining, impunctate; mesonotal

sutures deep; prothorax with a deep furrow on the side; metathorax densely covered

with long white hair, gradually sloping to the apex. Abdomen longer than the

head and thorax together; broader in the middle than the mesothorax, and becoming

compressed laterally towards the apex. The petiole is raised in the centre, this raised

central part being bounded by straight furrows. The suturiform articulation is almost

transverse, narrow, and shallow.

Differs from B. morrisont in having the thorax entirely black, and the abdomen not

entirely red, the second cubital cellule nearly as long as the third, the abdomen longer

compared to the head and thorax, and the eyes shorter and not reaching quite so near

to the mandibles. B. excelsus may be known from B. sedulus by its smaller size, the

darker wings, the shorter second cubital cellule, the abdomen shorter and not entirely

red, the ovipositor shorter, &c.

15. Bracon excelsus.

Niger; abdomine rufo, articulatione suturiformi recta ; terebra quam abdomen fere breviore ; alis fuliginosis. 9.

Long. 7 millim.; terebra 2 millim.

Hab. Mexico, Presidio (Forrer).

Antenne with the pedicel of the scape longish, half the length of the first joint; the

first joint globular, not produced at the apex, and about three times longer than

the second; the third and fourth joints subequal. Face almost transverse, scarcely

BIOL. CENTR.-AMER., Hymenopt., October 1886. 277

322 HYMENOPTERA.

punctured; clypeus not projecting, and not separated by a furrow from the face;

the front is excavated, the excavation moderately deep and separated from the ocelli

by a space greater than its own length. Thorax impunctate, shining; mesonotal

sutures obsolete; pleure and metanotum but sparsely pilose. Petiole perpendicular,

the central part almost straight, the furrows broad. The suturiform articulation

narrow, shallow, transverse. The abdomen somewhat shorter than the head and thorax

together.

16. Bracon chontalensis.

Niger, abdomine rufo ; alis fuscescentibus ; oculis basin mandibularum attingentibus.

Long. 6°5 millim.

Hab. Nicaragua, Chontales (Janson).

Antenne somewhat longer than the body, black, the flagellum dull brownish beneath,

microscopically pilose. Head narrower than the thorax, shining, impunctate, nar-

rowing considerably behind the eyes; the central furrow in the front broad, deep; face

sparsely pilose; tips of the mandibles reddish; eyes large, oval, reaching nearly to

the base of the mandibles; the orbits externally on the lower side dull reddish.

Thorax shining, impunctate, the sides sparsely pilose; the oblique furrow on the

metapleure deep. Abdomen a little shorter, and, if anything, broader than the

thorax. Petiole perpendicular.

Similar in coloration to B. excelsus, but easily known from that species by the eyes

reaching nearly to the base of the mandibles. :

The specimen described below (also from Chontales) is probably the male :—

Antenne a little longer than the body, the pedicel very short; first joint of nearly

equal width throughout, and about the length of the third; the flagellum closely

pilose, fuscous on the lower side. Face densely covered with longish white hair,

impunctate, smooth ; clypeus slightly projecting, separated from the face by a not very

distinct furrow. Front slightly depressed in the centre; a furrow leading into it from

the ocelli. Thorax shining, the metathorax covered with long white hair. Abdomen

shorter than the thorax and head together, becoming gradually narrower from the base

of the second segment ; petiole almost perpendicular, the central part widening towards

the apex, its sides straight; suturiform articulation straight, minute. The second

cubital cellule shorter than the third; the recurrent nervure interstitial. Length

6 millim.

17. Bracon evolans.

Niger; tarsis anticis palpisque albis; abdomine rufo, articulatione suturiformi sinuata; alis fuliginosis: ¢.

Long. 7 millim.

Hab. Mexico, Presidio (Forrer).

Antenne longer than the body, 41-jointed, microscopically pilose’; first joint a little

BRACON. 323

longer than the third, thickened and produced at the apex beneath; the third joint a

little longer than the fourth. Face irregularly and rugosely reticulated, broadly but

not deeply excavated over the antenne, the depression reaching almost to the ocelli

(from which there runs only a very small furrow); clypeus projecting, and separated

from the face by a wide depression. The oral region bears long white hair; the

mandibles are piceous; the palpi white, hairy. The sternum, pleure, and metathorax

are densely covered with long white hair. The middle part of the petiole is broad, and

is bordered by deep, not very wide, and slightly curved furrows. The abdomen is a little

longer than the head and thorax together, and becomes gradually narrowed towards the

apex. The suturiform articulation is narrow, shallow, and slightly bent backwards in

the middle. Cubital nervure broadly curved at the base; the recurrent nervure

received considerably in front of the first transverse cubital one; second cubital cellule

on the lower side longer than the third.

Lis. Bracon aspasia.

fus; capite, antennis pedibusque, nigris; alis fuscescentibus, stigmate fusco; articulatione suturiformi

sinuata; terebra thoracis longitudine. 9.

Long. fere 8 millim.; terebra 2 millim.

Hab. Mexico, Presidio (Forrer).

Antenne originating from large tubercles, stout, microscopically pilose, the apical

joints fuscous ; basal joint and the scape four times longer than the second joint, its

apex dilated; first joint of the flagellum not much longer than the second. Face

rugose, the sides irregularly reticulated, the centre transversely striated, the striations

running into the punctures. There is a broad, somewhat oval, depression above each

antenna, the depressions separated by two curved keels, which approach each other

in the middle and diverge outwardly at the base and apex. Apical joints of the palpi

fuscous. The lower part of face and metapleure covered with long glistening white

hairs. Centre of the petiole transverse at the apex, the base narrowed ; the surrounding

furrow broad, moderately deep. Second segment curved, the sides covered with

longish white hair; second and the following segments without any depressions, the

suturiform articulation narrow, curved.

19. Bracon albispina. (Tab. XIII. fig. 15.)

Rufo-testaceus ; antennis, apice femorum, tibiis tarsisque anterioribus, apice tibiarum tarsisque posticis, nigris ;

alis fuscescentibus, stigmate fusco; articulatione suturiformi vix sinuata. 9.

Long. 7 millim.; terebra 1:5 millim.

Hab. Mexico, Valladolid in Yucatan (Gawmer), Presidio (Forrer).

Antenne scarcely so long as the thorax and abdomen together, fuscous on the lower

side towards the apex ; basal joint four times longer than the second, shining, glabrous ;

the flagellum microscopically pilose; the third and fourth joints subequal. Face

2 TT 2

324 HYMENOPTERA.

rugose, broadly, but largely, projecting in the middle; front slightly depressed above

the antenne; a broad and deep furrow leading down from the ocelli, which are

surrounded by a narrower triangular one. Face, prosternum, metathorax, and coxe

covered with long white hair, the abdomen and legs with shorter hair. Metathorax with

a gradual rounded slope to the apex, the apex with a raised border. Petiole deeply

depressed in the middle at the basal fourth; the raised central mass narrowed at the

base, the apex rounded; inner furrow wide, the outer one placed below the raised

margin. The suturiform articulation moderately deep and wide, curved. ‘There are no

depressions on any of the segments, which are shining, impunctate, and depressed at

the base. The abdomen isa little longer and not much wider than the thorax, and

becomes gradually narrowed from the third segment to the apex. ‘The apices of the

four front femora, their tibie and tarsi, the apices of the hind tibie, and the hind tarsi,

are black; the base of the tibize and the spurs white. The cubital nervure is slightly

angled at the base, and the recurrent nervure received a little in front of the transverse

cubital one.

The amount of black on the legs varies, and the abdominal segments are sometimes

streaked transversely with obscure yellow.

ufo-testaceus; antennis, apice tibiarum posticarum tarsisque, nigris; alis fuscescentibus, stigmate fusco ;

articulatione suturiformi recta.

Long. 8 millim.

Hab. Mexico, Presidio (Forrer).

20. Bracon forreri.

Antenne as long as the body, moderately stout; densely, microscopically pilose; the

joints very closely articulated; scape reddish beneath. Head shining, impunctate

above, the face not so shining, and obscurely and longitudinally striated; moderately

depressed above the antenne, the central furrow deep; ocelli surrounded by a furrow;

a wide, not very deep, furrow down the sides of the cheeks; tips of the mandibles

black; palpi pale. Thorax shining, impunctate; scutellum narrowed towards the

apex, but not sharply, the sides distinct ; metanotum with a gradual slope to the apex ;

a furrow along the sides of the metapleure, originating in a deep fovea. Abdomen

shining, impunctate; central area of the petiole comparatively small, the inner furrow

broad and with a wide outer border; segments deeply separated, the second without

depressions. Cubital nervure at the base broadly curved ; the recurrent nervure received

a little in front of the transverse cubital one; the second cubital cellule much shorter

than the third.

BRACON. 325

The group of B. aLTIcoLa.

Abdomen aciculate, the second segment in the middle rugosely punctured. Metanotum

keeled in the middle, rugose on either side of the keel. Eyes oblong, reaching to the

base of the clypeus.

+ 21. Bracon alticola.

iger; mandibulis, abdomine pedibusque rufo-testaceis; tibiis intermediis, tibiis tarsisque posticis, nigris,

tarsis anticis fuscis; articulatione suturiformi recta; alis fere fuscis, stigmate et nervis testaceis, cellula

cubitali 2? quam 3° breviore. 9.

Long. 4:5 millim.; terebra fere 2 millim.

Hab. Mexico, Ciudad in Durango 8100 feet (Forrer).

Antenne stout, scarcely attenuated towards the apex; the flagellum densely covered

with a microscopic pile. Head shining, the face aciculate, bearing some pale hairs;

clypeus at the base almost transverse; trophi large, dull testaceous. Thorax shining,

impunctate, the pleure and metanotum covered with longish white hair; parapsidal

sutures large, deep; a wide, transverse, longitudinally keeled furrow in front of the

scutellum. Petiole vertical, deeply excavated at the base, aciculate, the inner furrow

wide and deep and rounded at the base and apex; the petiole above and the punctured

central part of the second segment black; the base of the second segment distinctly

margined. The cubital nervure is but slightly curved, the recurrent nervure is

interstitial; the first transverse cubital nervure is very oblique, so that the upperside of

the second cubital cellule is much shorter than the lower. The legs are densely covered

with pale hairs; the spurs are testaceous; the anterior coxe are black at the base.

The smallest species of Bracon known from our region.

i. Abdomen punctured.

The group of B. HEBES.

Abdomen finely and closely punctured all over. Head shining, the face obscurely

aciculate. Eyes oval, not reaching to the base of the clypeus.

Differs from the other groups with punctured abdomen in the punctuation being

very close and fine.

+- 22. Bracon hebes.

Rufo-testaceus ; flagello antennarum nigro; alis fumatis, stigmate sordide testaceo; articulatione suturiformi

recta. 9.

Long. 4°5 millim.; terebra 1°5 millim.

Hab. Mexico, Presidio (Forrer). |

Antenne 39-41-jointed, longer than the body, microscopically pilose. Head sparsely

326 HYMENOPTERA.

pilose; frontal furrow narrow, shallow; palpi longish, pale testaceous. Parapsidal

furrows not deep; a shallow, not very distinct, furrow runs down the centre of the

metanotum. Petiole semiperpendicular, shining, impunctate. The abdomen is about

the length of the head and thorax united. The recurrent nervure is nearly interstitial ;

the second cubital cellule shorter than the third. The hind tarsi are more or less

blackish.

The group of B. DEMOCRATICUS.

Abdomen irregularly, longitudinally punctured ; central part of the petiole shield-shaped,

not narrowed at the apex, the apex transverse ; second segment without any depres-

sions, and with a smooth, triangular area at the base ; suturiform articulation

wide, deep, longitudinally striated. Abdomen (in the female) shorter than the head

and thorax united, and wider than the thorax. Eyes oval, reaching to the apex of

the clypeus.

1 (2). Head and legs luteous. . . we ew ew we eee Olandicus.

2 (1). Head and legs black, wholly or in part,

3 (4). Head and legs entirely black; the area on second segment shield-

shaped, as broad aslong . . . . . . . . . democraticus.

4 (8). Head and legs partly black; the area on second segment much longer

than broad (males only are known).

5 (6). Abdomen much longer than the head and thorax united ; suturiform

articulation not striolated ; ocelli not enclosed in black . . . . comparatus.

6 (5). Abdomen scarcely longer than the head and thorax united; suturi-

form articulation striolated ; ocelli broadly surrounded with black. crudelis.

-testaceus; antennis nigris; apice tibiarum posticarum tarsisque fuscis; alis fuscescentibus, stigmate

fusco; terebra corporis longitudine.

Long. 7 millim.; terebra fere 7 millim.

Hab. Mexico, Northern Sonora (Morrison).

obs 23. Bracon blandicus. (Tab. XIII. fig. 17.)

Antenne originating from distinct tubercles, scarcely so long as the thorax and

abdomen together ; basal joint dilated at the apex, slightly curved on the lower side,

about three times as long as the second ; third and fourth joints subequal. Face shining,

impunctate; front but slightly dilated above the antenne; central furrow indistinct.

Metanotum with a gradual slope to the apex. Petiole smooth, impunctate; the central

part broad and depressed at the base; inner furrow broad and deep, its outer margin

acute, the outer furrow narrower, situated lower down than the inner, and becoming

narrower towards the base. Segments 2-4 irregularly reticulated, the apical ones

impunctate ; first furrow narrow, moderately deep, nearly straight. The recurrent

nervure is interstitial; the second cubital cellule much shorter than the third.

BRACON. 327

24. Bracon democraticus. (Tab. XIII. fig. 19.)

Ferrugineus ; antennis, capite pedibusque, nigris; alis fuliginosis, stigmate nigro.

Long. 7 millim.; terebra 5°5 millim. ‘

Hab. Mexico, Northern Sonora (Morrison).

Face finely and closely punctured, a semicircular, shining, impunctate space over the

clypeus; the depression over the antenne shallow, the furrow narrow. The two

furrows of the petiole punctured somewhat closely, and of nearly equal width. Second

segment coarsely and longitudinally striated (some of the striations being much stronger

than others), a smooth, shining, impunctate, triangularly shaped space at the base, the

apex shining and impunctate; third segment longitudinally striated like the second,

the fourth segment broadly so in the middle; the suturiform articulation broad, longi-

tudinally striated. The abdomen is scarcely so long as the thorax, the petiole at the

base is semiperpendicular. The recurrent nervure is received a little in front of the

transverse cubital nervure.

25. Bracon comparatus. |

‘Luteus; antennis, femoribus tibiisque posterioribus, nigris; alis fumatis, stigmate testaceo. d.

Long. 8°5 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne tapering towards the apex, originating from distinct tubercles; basal joint

a little more than three times the length of and one half thicker than the second, the

apex obliquely truncated; the joints of the flagellum indistinctly separated; third and

fourth joints subequal. Face shining, impunctate; front but slightly depressed above

the antenne. Metathorax with a gradual slope to the apex. Abdomen nearly double

the length of the thorax, sessile; petiole one half longer than the second segment; flat,

the central part tongue-shaped (not reaching to the apex of the petiole), the apical

part narrower and keeled in the centre, the furrows shallow; the first transverse

furrow is indicated, but not very distinctly; the petiole is shining, impunctate, the

rest indistinctly reticulated.

26. Bracon crudelis.

Luteus; femoribus, tibiis tarsisque pro majore parte antennisque, nigris; alis fumatis, stigmate fusco; articu-

latione suturiformi recta, striolata.

Long. 7 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne as long as the body, nearly glabrous, the joints distinctly separated; basal

joint three times as long as the second, slightly curved beneath, the apex semiobliquely

truncated; third joint a little longer than the fourth. Face shining, obscurely punctured ;

front depressed above the antenne, the furrow not very deep; ocelli surrounded by a

328 HYMENOPTERA.

black patch. Metathorax with a gradual slope to the apex. Abdomen sessile; petiole

shining, impunctate, the raised part 3-angled, transverse at the apex, narrowed toa

point at the base, a straight keel running down the side, the furrow on the inner side

of this broad (there is none on the outer); segments 2—4 obscurely punctured and reti-

culated, the apical ones shining and impunctate; a deep, obscurely reticulated furrow

at the apex of the second segment.

Almost similar in coloration to B. comparatus, but easily known from that species by

the much shorter abdomen, the less excavated front, and the longitudinally striolated

suturiform articulation.

iii. Abdomen striated.

The group of B. MoNTIVAGUS.

Abdomen strongly longitudinally striated, except at the apex; longer than the head and

thorax united; central part of the petiole rounded and narrowed behind; an

oblique depression on each side of the second segment, a sharp keel down the centre ;

suturiform articulation transverse, wide, deep, strongly longitudinally striated.

Eyes oblong, just reaching to the apex of the clypeus.

27. Bracon montivagus. (Tab. XIII. fig. 16.)

Rufus; antennis pedibusque nigris; coxis posterioribus femoribusque posticis rufis; articulatione suturiformi

recta; alis fuliginosis, stigmate nigro; terebra quam corpus longiore.

Long. 10 millim.; terebra 10°5 millim.

Hab. Mexico, Ciudad in Durango 8100 feet (Forrer).

Antenne a little shorter (9 millim. in length) than the body; of nearly uniform

thickness; the flagellum covered with a very short microscopic pile, the scape more

shining and sparsely clothed with longish hair; third joint nearly one fourth longer than

the fourth. Head shining, the face almost impunctate, the front not much depressed

above the antenne, the central furrow indistinct; ocelli surrounded by a moderately

deep furrow; apex of the mandibles and palpi black. Thorax shining, impunctate,

the metanotum irregularly reticulated ; scutellum triangular, the sides broadly, and not

very distinctly, keeled. Petiole longitudinally reticulated and striated, the broad inner

furrow transversely striated, the outer furrow equally broad and similarly striated and

perpendicular. Second segment coarsely longitudinally striated, most strongly at the

base, where there is a small triangular, impunctate, shining space; an oblique depression

on each side at the base; the third and fourth segments longitudinally striated, but

not so coarsely as the second, their apices shining, impunctate, as are also the apical

segments; the transverse furrow deep, wide. The recurrent nervure is interstitial ;

the cubital nervure from the second transverse cubital cellule curves obliquely down-

wards, thus making the third cubital cellule rather wide.

IPHIAULAX. $29

IPHIAULAX.

Iphiaulaz, Forster, Verh. Ver. Rheinl. ix. p. 234 (1862).

According to Férster, Iphiaular differs from Bracon, as limited by him, by the

abdomen having “mehreren stark gekerbten breiten Querfurchen,” while Bracon

has it without, “oder bloss mit einer einzigen, stark gekerbten, breiten Querfurche.”

The distinction between the two seems to me to be very artificial, but I separate them

to facilitate identification. In some species the furrows behind the suturiform arti-

culation are not readily seen through being hidden by the overlapping segment in

front. The species of Jphiaulax are more numerous than those of Bracon, and have

an equally wide range over the globe, but are more especially numerous in the tropics.

As in Bracon, I have divided the ‘ genus’ into sections.

I. A bifid or simple spine below the antenne.

The group of I. NIGRICEPs.

Abdomen considerably longer than the head and thorax together ; petiole flat, with a

large tongue-shaped area in the centre, bounded by two narrow keels, the inner one

only surrounding the area at the base ; second segment depressed at the side and

having a stout keel on the basal half in the centre. Recurrent nervure interstitial.

(Species 1.)

1. Iphiaulax nigriceps. (Tab. XIII. fig. 20, ? .)

Bracon nigriceps, Brullé, Hist. Nat. Ins. Hymén. iv. p. 334°.

Hab. Guatemaua, Teleman (Champion); Nicaragua, Chontales (Janson); PaNaMa,

Volcan de Chiriqui 2000 to 3000 feet, Bugaba (Champion); Guiana, Cayenne}.

II. No spine on the face.

i. Abdomen not punctured or striated (I. brachyura excepted). (Species 2-54.)

+ No keel in the centre of the second segment. (Species 2-6.)

The group of I. PULCHRIPENNIS.

Eyes oval, not much longer than wide, not reaching to the clypeus. Basal joint of the

| scape longish, narrow, longer than the following three joints united. Abdomen not

broadly dilated to the fourth segment, almost of equal breadth; the tongue-shaped

area in the petiole not reaching to the base, the latter deeply excavated in the centre ;

nearly twice the length of the head and thorax united ; the furrow down the sides of

the second segment narrow ; suturiform articulation narrow, shallow. Ovipositor

double the length of the body. Body luteous, the head and the apex of the abdomen

black ; wings yellowish-hyaline, banded with fuscous. (Species 2 & 3.)

1 (2). Metathorax black . 2... ew ee we ee ee we) pubohripennisa,

2 (1). Metathorax luteous er . rogerst.

BIOL. CENTR.-AMER., Hymenopt., January 1887. 2 UU

330 HYMENOPTERA.

4 2. Iphiaulax pulchripennis. (Tab. XIII. fig. 23, 9 .)

Nig

er; mesothorace abdominisque basi luteis ; alis fusco-hyalinis, medio apiceque fumatis, nervis nigris. 9.

Long. 19 millim.; terebra 46 millim.

Hab. Guatemata, Panima in Vera Paz (Champion); Costa Rica, Volcan de Irazu

6000 to 7000 feet (Rogers).

Smooth, shining, impunctate; face (especially the sides) and metathorax covered with

long pale hairs; the lower part of the head with black hairs. Antenne as long as the

body ; the third joint distinctly curved, more than one half longer than the fourth.

Antennal tubercles closely punctured ; the face bears a few, almost obsolete punctures,

and in its centre are two longitudinal furrows leading to the base of the clypeus; the latter

has two oblique furrows leading from the above pair, but not nearly so distinct ; ocelli

surrounded by a furrow, and a wider and deeper one leads down from them to the

antenne ; palpi fuscous, densely pilose. Middle lobe of the mesonotum not clearly

separated from the lateral one. The depression on the second segment commences a

little from the centre, curves round to the sides, goes straight down the latter, and then

curves again inwardly towards the middle, but not reaching it, and becoming shallower

towards the termination ; at the base of the third segment on either side is an oblique

depression, a little longer than broad, and not reaching to the side ; the apical segments

are pilose. The extreme base of the wing is smoky ; the blotch in the middle commences

at the transverse basal nervure and ends at the first transverse cubital; the apical cloud

commences at the second transverse cubital; in the hind wings the cloud occupies

scarcely the apical half.

3. Iphiaulax rogersi. (Tab. XIII. fig. 22, ¢ .)

Luteus; antennis, capite, abdominis apice pedibusque, nigris; alis flavo-hyalinis, medio apiceque fumatis,

stigmate sordide flavo. 9.

Long. 18 millim. ; terebra 51 millim.

Hab. Costa Rica, Volcan de Irazu 6000 to 7000 feet (Rogers).

Similar in coloration to the preceding, except that the metathorax is luteous and

the stigma yellowish. It also differs in the apex of the clypeus being almost trans-

verse, and not gaping so much over the mouth; in the transverse basal nervure being .

completely interstitial; in the antenne being, if anything, thinner and shorter; the

ovipositor longer; the clouds in the wings lighter in tint, the stigma yellower, the

second cubital cellule longer compared to the third ; the abdomen narrower, &c.

IPHTAULAX, 331

The group of I. Dotosus.

Lyes oblong, distinctly longer than wide, reaching to the apex of the clypeus. Basal

joint of the scape thick, not longer than the following three joints united. Abdo-

men dilated from the base towards the apex ; the tongue-shaped area in the petiole

reaching nearly to the base, the latter not deeply excavated ; not much longer than

the head and thorax united. Ovipositor longer than the body. Body luteous, the

head and the apex of the abdomen black ; wings yellowish-hyaline, banded with

Fuscous, the stigma yellow. (Species 4 & 5.)

1 (2). Wings black at the base . 2. . 1. 1. ww ew ee ew ew ee. ettltatus.

2 (1). Wings yellow at the base. . . . 2. 1. 1. se ee we eee . olosus.

Dar 4. Iphiaulax dolosus.

Flavo-testaceus ; capite, antennis, prosterno, pedibus posticis, abdominis apice terebraque, nigris; alis flavo-

hyalinis, fusco bifasciatis, stigmate flavo. 92.

Long. 17 millim. ; terebra 36 millim.

Hab. Guatemata, San Gerénimo (Champion); Panama, Volcan de Chiriqui 2000 to

3000 feet, Caldera 1200 feet (Champion).

Face rugose ; the rest of the head shining, impunctate, except the sides of the frontal

furrow which are aciculate. Thorax shining, impunctate, as is also the abdomen.

Metathorax at the sides covered with a longish pale pubescence. Abdomen longer

than the head and thorax united, gradually dilated to the apex of the fourth segment,

thence narrowing to the apex, which is not acute; the black commencing at the base

of the fifth segment. The four anterior legs are luteous, except the tips of the tarsi ;

the hind legs black, except the apices of the coxe, the apical joint of the trochanter,

the base of the femora, and the tibie.

5. Iphiaulax exaltatus, (Tab. XIII. fig. 21, ¢.)

Flavo-testaceus ; capite, antennis, pedibus posticis, coxis tarsisque intermediis, abdominis apice terebraque,

nigris ; alis flavo-hyalinis, fusco trifasciatis. 9.

Long. 16 millim. ; terebra 28 millim.

Hab. Costa Rica, Cache (Rogers).

Similar in form and sculpture to J. dolosus, but smaller; the fourth abdominal

segment black ; the central part of the petiole reaching nearly to the extreme base and

not so sharply pointed, the base itself being not so deeply excavated; the second

segment longer compared to the third, and with the lateral furrows deeper; the

apical branch of the suturiform articulation straight, not distinctly curved ; the wings

black at the base and deeper in tint, in the yellow as well as in the black; the

middle coxe and tarsi black; the hind spurs and knees also black (not yellow as in

I. dolosus).

2002

332 HYMENOPTERA.

The group of I. LacHRYMOSUS.

The centre of the second abdominal segment raised, but not forming a keel; the lateral

furrows oblique, wide, deep ; suturiform articulation sinuated. Inner furrow of

the petiole wide, deep, the central part not much narrowed towards the base. Abdo-

men a little longer than the head and thorax united ; the apical ventral segment

ploughshare-shaped. Ovipositor longer than the body. Eyes oval; face rough,

shining. Recurrent nervure not interstitial. Body luteous, the head and the apex

of the abdomen black ; wings yellowish-hyaline, banded with fuscous. (Species 6.)

The raised central part of the second segment sufficiently distinguishes this group

from the two preceding. The coloration of the body and wings is of the same type,

but the species is much smaller in size.

6. Iphiaulax lachrymosus, (Tab. XIII. fig. 24, 2.)

Lfiteus ; antennis, capite, abdominis apice late pedibusque, nigris; geniculis, trochanteribus tarsisque anticis

luteis ; alis flavo-hyalinis, fusco bifasciatis, stigmate nigro; articulatione suturiformi sinuata; terebra

quam corpus longiore. ¢.

Long. 9 millim.; terebra 10 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Antenne stout, 43-jointed, scarcely so long as the body; sparsely microscopically

pilose. Head shining ; eyes margined; a rough keel down either side of the face; the

central part uneven ; the keel in the centre of the front wide, moderately deep. Middle

lobe of the mesonotum distinct ; scutellum raised, the sides keeled, becoming narrowed

towards the apex. ‘The middle cloud in the fore wings extends from a little in front

of the transverse basal nervure to the apex of the stigma; the central cloud is broad ;

in the hind wings only the apex is broadly smoky.

In general coloration and size this species approaches very closely to I. gloriatorius,

but the different structure of the second abdominal segment sufficiently distinguishes

the two.

tt A keel on the second segment. (Species 7-54.)

The group of I. sctarius.

Lhe keel on the second segment extending to the apex, becoming gradually narrowed to a

point, not dilated at the base, the depression on either side of it very deep and wide ;

the lateral furrow also deep and wide, slightly oblique, and not curved, extending

to near the apex. The apical fork of the suturiform articulation extending to the

apical third of the segment, forming a rounded curve, not reaching to the side.

Lyes oval ; head considerably developed behind them. Body luteous, the head, the

apex of the abdomen, and the greater part of the legs, black ; wings smoky-hyaline,

a fascia below the stigma and the apex, fuscous. (Species 7.)

IPHIAULAX. 333

The general appearance of this species is similar to the preceding, but the keel on

the second segment sufficiently distinguishes it; from the next group it may be known

by its more elongated body, the abdomen especially being longer and narrower, by the

antenne being longer and more filiform, by the longer and narrower keel on the second

segment, and by there being no keel on the third segment.

7. Iphiaulax sciarius.

Flavo-testaceus ; capite, antennis, prosterno abdominisque apice late, nigris ; tarsis anticis, trochanteribus ante-

rioribus, basi femorum geniculisque late, testaceis ; alis flavo-hyalinis, fusco bifasciatis, stigmate nigro. 2.

Long. 16 millim.; terebra 26 millim.

Hab. Costa Rica, Irazu 6000 to 7000 feet (Rogers).

Antennz longish, microscopically pilose, the basal joints of the flagellum very

closely amalgamated ; basal joint of the scape nearly as long as the third and fourth

joints united, thick, becoming slightly thicker towards the apex, which is transverse ;

the second joint of the scape much thinner. Head sparsely covered with longish pale

hair on the face and behind ; the cheeks punctured, but not strongly ; the face smooth,

shining, impunctate; slightly concave in the centre; front slightly depressed; the

furrow leading down from the ocelli wide, but not very deep. yes oval, widely

distant from the centre of the clypeus; the head largely developed behind them, but

not projecting. Thorax shining, impunctate, sparsely covered with short pale hair;

scutellum but slightly raised. Metathorax with a gradual slope to the apex. Petiole

deeply and widely excavated at the base; base of the central part acute in the middle,

the apex transverse ; at the apex there is, on either side, a longish depression, which

originates before the middle, where it is narrow, becoming wider towards the apex, so

that the central portion becomes gradually narrowed; the usual inner furrow is

absent (unless it be represented by the above-mentioned depression) ; the outer furrow

is lateral, wide, and not visible from above. The keel on the second segment is flat

on the top, becoming gradually narrowed towards the apex, which it quite reaches ;

there is a depression, double its own width, on either side of it; the lateral furrow is

narrow and somewhat oblique. The suturiform articulation is narrow and straight.

On the third segment there is, on either side, a curved furrow, reaching from the base

to a little beyond the middle. At the apex of the third segment is a fine transverse

groove, beyond which the segment projects at the sides over the fourth on the upper-

side; there is a similar groove also on the fourth segment, the sides of which are also

produced laterally above. Legs of moderate length, stout, closely pilose ; the hind tarsi

not much longer than the tibie; the apex of the four fore coxe, the knees broadly, the

basal third of the femora, the tarsi more or less in the middle, the apex of the hind

trochanters, the base of the femora, and the base of the tibie are yellow, the remainder

of the legs black. The cloud in the fore wings extends from the base of the first

cubital cellule to a little beyond its apex, the cloud being narrowed in the middle ;

the apical cloud begins from about the apex of the second cubital cellule.

334 HYMENOPTERA.

The group of I. EROS.

The keel on the second segment triangular at the base, produced as a sharp keel to near

the apex and bordered by a not very deep or wide furrow ; the lateral furrow wide,

oblique at the base. Apical branch of the suturiform articulation short, oblique.

Body rufous, the head and the apex of the abdomen black; wings yellowish,

banded with fuscous, the stigma yellow or black. (Species 8-14.)

The species of this section differ chiefly from J. sciarius in the structure of the

basal segments of the abdomen and in the abdomen being shorter and broader.

A. Suturiform articulation smooth, not striated. Legs for the greater part black.

(Species 8-11.)

a. Stigma yellow. (Species 8-10.)

1 (2). Metathorax yellow . 2. 2. 1. 1. 6 6 © ee ee ee eo « CFOS,

2 (1). Metathorax black.

3 (4). A small raised space in the centre of the suturiform articulation ;

knees broadly yellow. . . . . . . « trochanteratus.

4 (3). No raised space in the suturiform articulation ; knees black . . » beatus.

BS Iphiaulax eros. (Tab. XIII. fig. 25, ¢.)

Lutte

us ; antennis, capite, abdominis apice pedibusque, nigris ; alis flavis, medio apiceque fumatis. 9.

Long. 12 millim.; terebra fere 9 millim.

Hab. Guatemata, San Juan in Vera Paz (Champion).

Antenne stout, very slightly compressed ; the third joint scarcely one fourth longer

than the succeeding one. Face finely punctured, semi-opaque ; apex of the clypeus

curved, not projecting much. Middle lobe of the mesonotum clearly separated from

the lateral lobe; the furrows distinct, especially in front; the longitudinal depression

on the mesopleure wide, deep ; the oblique suture on the metapleure shallower. The

centre of the petiole raised, surrounded laterally by a wide and deep depression; the

depression bounded externally by a sharp keel, which is separated from the external

outer side by a furrow ; in the centre of the raised central part is a shallow longitudinal

furrow. The rest of the abdomen is broader than the mesothorax, and becomes

gradually (but not acutely) narrowed towards the apex; on the basal half of the second

and third segments, in the middle, is a carina, broad at the base, narrowed towards the

apex ; on both of these segments a deep furrow runs from near the middle obliquely to

the sides, down which they run to near the apex, that on the second segment being

broader and deeper than the one on the third, which is very narrow (but still deep)

down the side ; the raised keel on the apex of the third segment is very distinct, and

there is a transverse furrow at the base of the fourth. The cloud in the centre of the

fore wing reaches to the base of the stigma, and touches the first transverse cubital

IPHIAULAX. 335

nervure at its lower side; the apical cloud commences on the outer side of the transverse

cubital nervure; in the lower wing the middle cloud is exactly opposite that on the

fore wing, and the apical one is small; the transverse basal nervure is received in front

of the first transverse cubital cellule; second cubital cellule not one half longer than

the first and much shorter than the third.

In this species the abdomen is shorter compared to the thorax and much broader

than in J. trochanteratus; the raised space on the third segment is much more distinct

and extends as a carina to near the middle of the segment; the head is not so much

nor so sharply narrowed behind the eyes, and the metathorax is yellow and the knees

black. The thorax also has not such a reddish tinge.

ax 9. Iphiaulax trochanteratus.

Rufu

S$; capite, antennis, prosterno, metathorace, abdominis apice pedibusque, nigris ; trochanteribus geniculisque

testaceis ; alis flavis, fascia medio apiceque fumatis, stigmate flavo. 9°.

Long. 11 millim.; terebra 7 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Antenne longer than the body, the third and fourth joints subequal, the scape bearing

longish white hair. Face covered with longish white hair, irregularly aciculate, and

with a few punctures; the centre broadly dilated; vertex shining, impunctate; the

ocelli slightly raised, surrounded by a furrow; a deep and broad furrow runs down from

the ocelli to the antenne, this part too being slightly depressed ; teeth of the mandibles

inclining to piceous; palpi pale testaceous. Mesonotal sutures indistinct. Scutellum

raised gradually from the base and apex to the centre, longer than broad, shining,

impunctate, covered with longish hair. Metathorax short, rounded, densely covered

with pale hair, an oblique broad furrow on the pleure; a piceous band down the centre

of the metanotum. The centre of the petiole raised, separated from the side by a broad

and deep furrow ; a longitudinal, broad but not very deep, furrow down the centre. A

keel (broadest at the base) runs down the centre of the second segment; a broad and

deep depression on each side of it, this depression originating at the base not far from

the central keel; a short keel at the base, and a transverse depression on each side of the

next segment; there is a shorter and more oblique depression on each side of the fourth

segment.’ Legs (especially the tibize and tarsi) densely pilose; the fore coxe are testa-

ceous; the apices of the joints of the anterior tarsi and the spurs pale testaceous. The

middle cloud in the fore wings commences at the base of the stigma, goes obliquely

across the base of the first cubital cellule to the first transverse cubital nervure, and

then follows the first recurrent nervure to the opposite side of the wing; the apical

cloud commences at the end of the stigma, and forms a curve past the second transverse

cubital nervure. The cloud in the hind wings is opposite that in the fore pair, the

apical one is faint and narrow; transverse basal and first recurrent nervures almost

interstitial.

336 HYMENOPTERA.

10. Iphiaulax beatus. (Tab. XIV. fig. 18, 9.)

ufus; antennis, capite, prosterno, metathorace, abdominis apice pedibusque, nigris; alis flavo-hyalinis, fascia

medio apiceque fumatis, stigmate flavo. 9.

Long. 10-5 millim. ; terebra 9 millim.

Hab. Guatemaa, Las Mercedes 3000 feet (Champion).

Antenne scarcely so long as the body, stout, the third joint distinctly longer than the

fourth. Face transverse, faintly rugose ; vertex shining, impunctate. Ocelli surrounded

by a furrow; the part below them hollowed, the hollow with a distinct furrow in its

centre ; the face, and vertex to a less extent, sparsely covered with longish pale hairs.

Mesonotal sutures distinct ; scutellum not much raised above the scutum. Metathorax

with a gradual slope; the oblique furrow below the stigma not very deep or distinct.

Centre of the petiole raised, a broad deep furrow surrounding it, the furrow becoming

wider towards the apex, thus contracting the central raised part. In the centre of the

second segment is a raised keel, broad at the base, narrowed at the apex, and extending

to the apex of the segment; a broad, oblique depression along the side. A transverse

oblique depression at the base of the third segment; a transverse one on the following

segment. Legs densely covered with pale hairs; spurs fuscous. The central cloud in

the fore wings extends between the basal and the first transverse cubital nervure, going

straight across, and having a round hyaline spot at the junction of the first recurrent

and the cubital nervure; the stigma is black where the cloud touches it; the hind

wings are uniformly faintly smoky.

A smaller species than J. trochanteratus, with the thorax almost red; the abdomen

narrower, not being broader than the thorax; the antenne shorter and thicker; the

central part of the petiole narrowed and rounded at the apex, and consequently the inner

furrow is curved (not straight as in I. trochanteratus); and the ovipositor longer.

b. Stigma black. (Species 11.)

11. Iphiaulax janus.

Luteus; antennis, capite, pronoto, pedibus abdominisque apice, nigris; alis fuscis, apice fasciaque medio

fumatis. 9.

Long. 14 millim.; terebra 10 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Antenne stout; third joint straight, about one fourth longer than the following one.

Face obscurely wrinkled, covered with longish white hair; clypeus almost transverse at

the apex, the sides rounded ; antennal tubercles projecting, longer than broad; vertex

excavated above the antenne; ocelli raised. Mesonotal sutures distinct. Petiole with

the central portion raised ; the apex of the raised part transverse ; the base depressed ;

on either side is a broad furrow, which has a few transverse, and not very distinct, keels ;

bordering this is a raised carina which is separated from the side by a furrow, the outer

IPHIAULAX. 337

side being at a lower level than the keel. Down the centre of the second segment is a

broad flat keel, broadest at the base and united to the raised apical part at the apex;

at the base of this keel is a broad semicircular depression, which is deepest down the

side; at the apex of the keel is a curved furrow (very shallow in the centre) which, at

the side, bifurcates into two, the basal portion running to the extreme edge of the

segment, the other not reaching so far, and being also broader ; at the base of the third

segment is a transverse groove. The abdomen is not much longer than the head and

thorax together, broad in the middle, narrowest at the apex. The middle fascia in the

fore wing is between the transverse basal and the first transverse cubital nervures, but

does not touch the former on its lower side; the latter is interstitial. There is no

central fascia in the hind wings.

B. Suturiform articulation longitudinally striated. (Species 12-14.)

a. Wings with a fuscous band in the middle ; legs yellow. (Species 12 & 13.)

12. Iphiaulax peronatus.

Luteus; capite, antennis, abdominis apice, prosterno, apice tarsorum anterioribus, apice tibiarum posticarum

tarsisque posticis, nigris ; alis flavo-hyalinis, apice fasciaque medio fuscis, stigmate flavo. 9°.

Long. 12 millim, ; terebra 8 millim.

Hab. Panama, David in Chiriqui (Champion).

Antenne stout, microscopically pilose, the scape shining, with a few punctures, and

bearing sparse longish hair. Head with rather long whitish hair, the face rugose ; vertex

shining, impunctate, depressed in the centre below the ocelli, from which a deep furrow

runs to the antenne. Thorax shining, impunctate, sparsely covered with longish white

hair; the oblique furrow below the tegule broad, deep. The tongue-shaped centre of

the petiole separated from the sides by a very deep and broad furrow. A broad, deep,

oblique depression on each side of the base of the second segment; in the centre at the

base is a small triangular raised field, which is prolonged as a thin sharp carina to the

apex; the separation between the second and third segments deep, broad, and reticulated,

a broad and deep transverse furrow at the base of the latter. The abdomen is broader

than the thorax, broad at the base, becoming broader to the apex of the third segment,

then narrowed towards the apex, which is pilose. Legs longish, densely pilose ; apices

of the hind tibie, the hind tarsi entirely, and the four anterior tarsi at the apex, black ;

hind spurs fuscous-black. The middle fascia in the fore wing commences at the trans-

verse basal nervure, and extends to the base of the stigma, going obliquely across the first

cubital to the recurrent nervure; in the hind wings it is in a line with the cloud in the

fore wings; the apical cloud commences a little beyond the apex of the stigma, touching

the upper, but not the lower, part of the second transverse cubital nervure ; in the hind

wings it is much smaller. ‘The second cubital cellule is distinctly shorter than the third.

BIOL. CENTR.-AMER., Hymenopt., January 1887. 2 XX

338 HYMENOPTERA.

13. Iphiaulax zapotensis. (Tab. XIV. fig. 2, 2.)

Niger; abdominis segmentis 1°-4™ pedibusque luteis; apice tibiarum posterioribus tarsisque posterioribus,

nigris ; alis flavo-hyalinis, apice fasciaque medio fuscis, stigmate flavo. 9.

Long. 10 millim.; terebra 7:5 millim.

Hab. Guaremata, Zapote (Champion) ; Panama, Bugaba 800 to 1500 feet (Champion).

Antenne longer than the body, densely covered with microscopic pile, the scape with

scattered longish hair; shining; third joint a little longer than the fourth. Head

sparsely covered with longish pale hair; face finely punctured ; vertex shining, impunc-

tate, slightly depressed in the centre; a furrow proceeding from the ocelli to the

antenne. Thorax shining, impunctate, sparsely covered with pale hair; the oblique

suture below the tegule deep. The furrows surrounding the tongue-shaped centre of

the petiole broad, not very deep. Second segment with a large, oblique, deep depression

on each side; a carina runs down the centre, having its origin in a small triangular

field at the base; the furrow at the apex broad and deep, obscurely reticulated, and

ending on each side in a deep triangle, which runs in the direction of the larger lateral

depression issuing from the base. The depression at the base of the third segment is

narrow. Legs pilose, the hind spurs yellow. The wings are coloured as in J. peronatus,

except that, if anything, the clouds are darker and extend more into the stigma, while

the second cubital cellule is wider and somewhat shorter.

b. Wings fuscous only at the apex ; legs for the greater part black. (Species 14.) |

AM Iphiaulax pulchripes. (Tab. XIV. fig. 3, 2.)

eus; antennis pedibusque nigris; coxis, femoribus posticorum dimidio basali basique tarsorum posticorum,

rufis; alis flavo-hyalinis, apice fumatis, nervis stigmateque flavis. 9°.

Long. 10-5 millim.; terebra 9 millim.

Hab. Panama, Bugaba (Champion).

Antenne longer than the body, microscopically pilose; third and fourth joints

subequal. Head covered with longish pale hair; face finely punctured ; vertex shining,

impunctate, not depressed above the antenne; a deep furrow leads down from the

antenne ; tips of the mandibles piceous. Thorax shining, impunctate. Petiole

depressed at the base; two wide furrows along the sides, the inner one the shortest and

widest. In the centre of the second segment is a raised field, which curves round to a

point, and is prolonged as a broad keel to the transverse groove; the latter is broad and

longitudinally striated, the lower bifurcation being also striated; the furrow in the

third segment is also longitudinally striated. Cubital nervure roundly curved at the

base; the second cubital cellule considerably shorter than the third. The joints of the

tarsi (especially of the anterior and posterior pairs) are reddish ; the spurs are black.

IPHIAULAX. 339

The group of I. cHaMPIonl.

The keel on the second segment broad at the base (not dilated), becoming gradually

narrowed towards the apex of the segment, which it reaches; the bordering

depressions deep, moderately wide; the lateral furrow narrow, bordered by a

sharp keel on the inner side. A keel on the third segment (broad and triangularly

dilated at the base, narrowed towards the apex), the bordering depression wide,

shallow. Apical branch of the suturiform articulation curved, longer than the

basal. Thorax flat above ; the apex of the petiole raised above it. Abdomen a

little longer than the head and thorax united, becoming dilated to the apex of the

third segment. The second cubital cellule shorter than the third, wide ; the cubital

nervure rounded upwards at the base. Luteous; the head, legs, and prosternum black ;

wings with the apex and a fascia below the stigma smoky. (Species 15 & 16.)

The keel on the third segment makes this a very distinct group.

uteus ; antennis, capite, prosterno pedibusque, nigris; geniculis tarsisque anterioribus testaceis; alis flavo-

hyalinis, fascia medio apiceque fumatis, stigmate nigro. 9.

Long. 12 millim.; terebra 11 millim.

Hab. Panama, Bugaba (Champion).

D 15. Iphiaulax championi. (Tab. XIV. fig. 4, 2.)

Antenne scarcely so long as the body; the third joint longer than the fourth, curved

laterally, and dilated at the base. Head broader than long in front, the face punctured ;

clypeus transverse at the apex, not gaping much; a furrow between the antennal

tubercles; front depressed above the antenne; a thin carina running down from the

ocelli, which are surrounded by a furrow. Thorax narrow, longish, flat on the upper

side, the metanotum not being much depressed below the mesonotum, from which it

gradually recedes. Scutellum perfectly flat, not raised above either the meso- or meta-

notum, and bearing some punctures. Pleure somewhat compressed. Petiole with a

somewhat pear-shaped (the base, however, is too transverse) area, bounded by a wide

and deep depression, except at the base, where the depression is scarcely noticeable ;

the narrow apex of this depression becoming confluent with the raised apical portion ;

along the side of the latter is a keel, with a furrow on its outer side. In the centre of .

the second segment is a heart-shaped depression, enclosing a somewhat triangular raised

part in the centre; along the side is a furrow, curved at the base. In the centre of the

third segment is a triangular carina (broadest at the base), and from the base a broad

oblique furrow runs to each side; at the base of this segment is a semicircular

or curved furrow, irregularly reticulated. In the centre of the fourth segment is a large

depression, with a stout keel in the middle; a smaller depression also on the fifth, but

2xx 2

340 HYMENOPTERA.

this latter has no keel. The abdomen is longer than the head and thorax together,

and becomes gradually narrowed towards the apex. The tibie and tarsi are densely

covered with pale hair; the apices of the four front tarsi are black.

16. Iphiaulax imitatrix. (Tab. XIV. fig. 13, 2.)

Long. 12 millim.; terebra 11 millim.

Hab. Panama, Bugaba (Champion).

I am not quite sure but that this is only a form of L. championi; the chief distinction

lies in the form and structure of the abdomen: it is a little shorter and broader; the

petiole is much more vertical, its top being higher than the mesonotum, while in

I. championi it is lower, and is almost on a level with the rest of the abdomen ; there

is neither depression nor keel on the fourth segment, while in J. championi there is in

its centre a large depression, with a keel down the middle, like that on the third, only

narrower ; the fifth segment in J. championi has also a depression. In coloration the

two are almost identical. The clouds in the wings are much darker in J. imitatrix

than in L. champion.

The occurrence of these two forms in the same locality makes me think that it is

possible there may be some variation in the furrows, keels, &c. on the abdomen, or

rather that in some individuals these parts may, through immaturity, be much less

developed than in others. This is a point, however, which can only be tested by the

examination of a large series of specimens.

The group of I. GLORIATORIUS.

Keel on the second segment triangular, bordered by a deep and wide furrow ; the lateral

Surrow oblique; a deep fovea on either side of the apex of the petiole. Suturiform

articulation narrow, impunctate; the apical branch roundly curved, reaching to

near the middle of the segment, which is contracted in the middle above. Abdomen,

if anything, shorter than the head and thorax united. The curve of the oral region

wide, of nearly equal depth throughout, the centre of the clypeus being but slightly

emarginate ; above the latter is a rather deep 1\-shaped indentation. Lruteous ; the

head, the prosternum, the apex of the abdomen, and the greater part of the legs,

black. (Species 17 & 18.)

In coloration this group agrees with that of J. sciarius and I. championi; from the

former (which it resembles in the form of the suturiform articulation) it differs in the

keel on the second segment being triangular; from the latter in there being no keel on

the third segment; and from both in the clypeal incision being much less strongly

marked.

[TPHIAULAX. 341

% 17. Iphiaulax gloriatorius. (Tab. XIV. fig. 1, 2.)

uteus; capite, prosterno, abdominis apice pedibusque, nigris; antennis fuscis, geniculis, tibiis tarsisque

anterioribus, testaceis ; alis fusco-hyalinis, stigmate nigro, bifasciatis; articulatione suturiformi recta. 9.

Long. 8 millim.; terebra fere 8 millim.

Hab. Panama, Bugaba (Champion).

Antenne covered with a close stiff pile, moderately stout, tapering towards the apex.

Face opaque, finely punctured, the sides densely pilose. There is a semicircular furrow

bounding the central part of the front, which has no furrow in the middle leading

down from the ocelli. The central part of the petiole is bounded by a sharp keel, and

has a depression on either side at the apex; and in front of these are two shallow

depressions meeting at the apex. The central keel on the second segment is twice as

long as wide, and is bordered on either side by a wide and deep furrow, these furrows

not being united to the lateral ones. Suturiform articulation straight; the apical

branch issuing from near the middle; curved, scarcely reaching to the side of the

segment. The middle cloud in the fore wing occupies the first cubital cellule, but is

narrowed obliquely towards the posterior side of the wing; the apical cloud is broader

than the central one; the recurrent nervure is interstitial.

A 18. Iphiaulax frugalis.

“ Long. 10 millim.

Hab. Panama, Bugaba (Champion).

Very similar to J. gloriatorius, but larger and stouter; the antenne much stouter

and thicker; the depression on the front much deeper (being a regular depression

rather than a semicircular furrow surrounding a central part); the head more globular ;

the central keel on the second segment wider and shorter (not being double the length

of the base); the petiole flatter; the clouds in the fore wings much darker in tint, and

the central one wider and not narrowed posteriorly; the four anterior tibie, and the

greater part of the tarsi, black; the legs also stouter.

The group of I. HECTOR.

The keel on the second segment in the form of an elongated triangle ; the lateral furrow

oblique, originating from the base, deep, wide ; suturiform articulation usually finely

longitudinally striated. Wings blackish, or fuscous, wholly or in part; the stigma

ochreous. (Species 19-24.)

The black wings with ochreous stigma makes this division easily recognized.

342 HYMENOPTERA.

A, The base of the wings and a fascia below the stigma yellow. Suturiform articulation

not striated. Body and legs entirely rufous. (Species 19.)

19. Iphiaulax hector. (Tab. XIV. fig. 5, 2.)

Ferrugineus ; antennis verticeque nigris; alis flavo-hyalinis, fascia medio apiceque fuscis, stigmate flavo. 9.

Long. 14 millim.; terebra 7 millim.

Hab. Panama (Boucard).

Antenne scarcely so long as the body, microscopically pilose. Face rugose; vertex

largely depressed between the ocelli and the antenne, the depression reaching to the

eyes and blistered; ocelli surrounded by a depression which is rounded at the apex,

but narrower there than at the base; a furrow leads down from the depression to the

antenne. Thorax smooth, shining, impunctate; scutellum not much raised above the

mesonotum, but considerably so above the metanotum; the base transverse, the apex

narrowed and rounded. Petiole largely and deeply depressed at the base; two broad

and deep furrows along each side, the inner one the widest, and both separated from

the basal depression. Second segment with two deep curved depressions on each side,

and, in the centre, a depression enclosing a triangular field; the transverse furrow at

the apex is deep, and, at the sides, curves back to join the lateral depression, and from

its centre another and wider depression runs to the side in the opposite direction. The

transverse furrow in the third segment is slightly wider than that in the second. The

apical cloud in the fore wings commences at the apex, and the middle one ends at the

base of the stigma, the latter commencing a very little beyond the transverse basal

nervure ; in the hind wings the cloud commences opposite the base of the middle cloud

in the fore wings; second cubital cellule slightly shorter than the first, the third being

nearly as long as the other two united.

B. Wings entirely black. (Species 20-24.)

* Abdomen impunctate. (Species 20-23.)

a. Thorax red. (Species 20-22.)

a. Legs entirely rufous. (Species 20.)

20. Iphiaulax guatemalensis. (Tab. XIV. fig. 8, 9.)

Luteus; antennis capiteque nigris ; alis fumatis, stigmate flavo. 9.

Long. 12 millim.; terebra 6 millim.

Hab. Guatemata, San Gerdénimo (Champion).

Antenne stout, microscopically pilose; third joint nearly double the length of the

fourth. Face rugose; vertex aciculate, not depressed above the antenne; ocelli sur-

rounded by a narrow furrow, which is rounded at either end, but broadest at the base;

a furrow runs down to the antenne. Thorax shining, impunctate ; scutellum longer than

broad, narrowed towards the apex. Petiole depressed in the middle at the base; two

TPHIAULAX. 343.

furrows along the side, the outer one reaching to the extreme base and shallower than

the inner. Second segment with a broad depression on either side; in the centre are

two furrows uniting not far from the suturiform articulation; into the latter runs from

each side, obliquely, and joining it not far from the middle, a somewhat narrower

furrow ; the central furrow itself is striated, as is also the transverse one at the apex

of the next segment. Legs covered with a white pubescence; apices of the tarsal

joints fuscous. Palpi pilose, black; tips of the mandibles piceous. Below the base of

the stigma is a curved hyaline cloud occupying the greater part of the cubital cellule

and the angle formed by the recurrent and cubital nervures.

fb. Legs more or less black. (Species 21 & 22.)

ee 21. Iphiaulax calderensis. (Tab. XIV. fig. 6, 2.)

fo-testaceus ; capite, antennis pedibusque anterioribus, nigris; tibiis tarsisque posticis fuscis; alis fuscis,

coste testaceo, stigmate ochreo. 9.

Long. 11 millim.; terebra 6 millim.

Hab. Panama, Caldera in Chiriqui 1200 feet (Champion).

Antenne as long as the body, perceptibly tapering towards the apex, covered with a

close pile; basal joint longer than the third and fourth joints united, thick, shining,

scarcely transverse at the apex. Head below the antenne densely covered with long,

stiff, silvery-white hair; front and vertex shining, almost glabrous; front broadly, but

not deeply, hollowed ; the central furrow moderately deep. Eyes roundly oval, widely

distant from the base of the mandibles; projecting, the head retreating considerably

behind them. Thorax shining, the sides and metanotum sparsely covered with short

depressed hair; metanotum with a gradual slope to the apex, the sides faintly punc-

tured. Petiole abruptly, deeply excavated at the base; the central part tongue-shaped,

widest at the apex, which is transverse ; the inner furrow wide, moderately deep ; there

are four transverse keels at its apex; the outer furrow is hidden under the stout, sepa-

rating keel. Second segment with the raised area reaching a little beyond the middle,

and becoming narrowed gradually to a point at the apex, and bounded by a not very

deep furrow, which is finely rugose ; the lateral furrow goes obliquely from the base of

the central raised part to the sides, but does not reach the apex. Suturiform articula-

tion moderately deep, faintly aciculated ; the second furrow is narrower, the third furrow

a little narrower than the second. Legs pilose, less so on the femora than on the tibie

and tarsi: black, the apex of the hind coxe beneath and entirely so above and laterally,

the base of the trochanters, and the underside of the femora, red. Wings dark fuscous,

the stigma bright ochreous-yellow, palest below the costa; there is an oblique white

cloud in the first cubital cellule which is continued in front of the transverse basal

nervure; the latter is received in an angle in front of the first transverse cubital

nervure.

344 HYMENOPTERA,

22. Iphiaulax godmani. (Tab. XIV. fig. 7, 2.)

Ferrugineus ; antennis, capite, pedibus anterioribus, tibiis tarsisque posticis, nigris; alis nigris, stigmate

ochreo. 9.

Long. 12 millim.; terebra 6°5 millim.

Hab. Panama, Bugaba (Champion).

Antenne stout, longer than the body, microscopically pilose ; third joint distinctly

longer than the fourth. Head densely pilose, finely rugose in front; vertex opaque,

aciculate ; a furrow, broadest at the base, leads down from the vertex. Thorax shining ;

metapleure punctured. Petiole deeply depressed at the base; the inner furrow very

broad and deep, shorter than the outer one, the space between them in the form of

a sharp ridge. Second segment with an oblique depression on each side; down the

centre is a smooth, shining, raised field, ending gradually in a sharp point not far

from the suturiform articulation, the space on each side of it being rough. Suturiform

articulation wide, longitudinally striated, except the lower bifurcation ; the other groove

much narrower.

Differs from J. calderensis in being longer and broader; the furrow on the front

much broader and deeper, especially at the base; the wings much blacker in tint, with

the costa entirely black ; the abdomen broader; the head broader; and the colour of

the body of a much deeper ferruginous tint.

b. Thorax for the greater part black. (Species 23.)

23. Iphiaulax rufo-plagiatus.

Niger, maculis mesonoti, linea late metanoti abdomineque, rufis; pedibus nigris; alis nigris, stigmate ochreo. 9.

Long. 11 millim. ; terebra 6 millim.

Hab. GuatemMaLa, San Gerénimo (Champion).

Antenne stout, shorter than the body, almost bare. Head below the antenne and

laterally densely covered with pale hair; the face finely punctured ; frontal furrow wide,

moderately deep. Abdomen about one fourth longer than the thorax, not bulging out

in the centre. Petiole curved, deeply excavated at the base; the inner furrow very wide,

impunctate, and without carine, the outer one narrow, placed under the keel. The area

in the second segment nearly reaches, and becomes gradually narrowed, to the apex, and

is bordered by a depression ; this latter is coarsely, transversely striated, and united with

the lateral depression, which is deep, oblique, and not striated. Suturiform articulation

finely striated, except at the apices of the lateral branches. The furrow on the third

segment is finely striated. The stigma is ochreous, except at the extreme apex ; there

is a hyaline stripe in the first cubital nervure ; the cubital nervure is scarcely curved at

the base ; the recurrent nervure is received in front of the first transverse cubital nervure ;

the second cellule is shorter than the third. There is a small red mark on each side of

the mesonotum; the line on the metanotum is broad and placed in the middle; the

apex of the abdomen inclines to blackish.

IPHIAULAX 345

** Abdomen punctured. (Species 24.)

24. Iphiaulax brachyura.

Rufus; antennis, capite, prosterno, mesosterno pedibusque, nigris; alis nigris, stigmate ochreo. 9°.

Long. 9 millim.; terebra 1:5 millim.

Hab. Panama (Boucard).

Face closely punctured, covered with longish white hair ; front not depressed ; a longi-

tudinal furrow running down from the ocelli. Thorax flat above ; the metanotum rather

long, with a gradual and very gentle slope to the apex; sides and breast covered with

longish white hair. Petiole with the inner furrow broad and shallow. Second segment

with the central area at the base triangular, but prolonged at the apex into a sharp

broad keel ; the lateral depression broad and deep at the apex; the transverse groove

broad, striated, the basal fork narrow and not very distinct; on the raised central part,

in front of the transverse groove, are some shallow punctures; the part beyond the

suturiform articulation more strongly and closely punctured. Third segment not so

strongly nor closely punctured, the sides aciculated. Apical segments hairy, blackish.

The group of I. suavis.

Keel on the second segment short, broader than long, not reaching to the middle ;

surrounded by a broad, but not very deep, depression ; the lateral depression wide,

oblique, not very deep. Inner furrow of the petiole wide, and with some transverse

keels. Suturiform articulation shallow, not striated ; the apical branch much wider

than the basal one, which latter is not clearly defined. Abdomen longer than the head

and thorax united, becoming gradually thinner from the second segment ; the seg-

mental divisions deep; the apical ventral segment not ploughshare-shaped. Head

small, narrow, not much developed behind the eyes, the latter oval. Abdomen red ;

head and thorax black ; wings black, the stigma ochreous. (Species 25 & 26.)

The colour of the wings and stigma brings this group near to the preceding ; but the

structure of the second segment separates the two, the area being triangular and broader

than long; and the thorax is entirely black.

1 (2). Wings entirely black . . . 02200

2 (1). Wings with the basal third subhyaline we ee ew ew ees ptliventris.

25. Iphiaulax suavis.

Niger ; abdomine rufo, apice nigro; alis nigris, stigmate flavo. 9.

Long. 11-12 millim.; terebra 2-2°5 millim.

Hab. Guatemata, San Gerénimo (Champion); Panama, Taboga Island (Champion).

Antenne as long as the body, microscopically pilose. Head depressed, broadly but

not deeply, above the antenne, the sides of the depression striated obliquely, the stria-

BIOL. CENTR.-AMER., Hymenopt., January 1887. 2 YY

346 HYMENOPTERA.

tion sometimes obsolete; face closely but not coarsely punctured, bearing longish hair.

Thorax shining, impunctate, the sides covered with longish hair. Petiole deeply

depressed at the base; the inner furrow broad, but not very deep, and with a few trans-

verse broad keels in the middle ; the outer keel deeper and crenulated. Second seg-

ment with a triangular furrow in the centre, the apex of which reaches a little beyond

the middle ; laterally (but not reaching to the base) are two oblique deep depressions,

which sometimes bear two transverse keels; the transverse furrow broad and shallow,

especially shallow in the middle. Suturiform articulation shining, impunctate; the

basal branch shallow, indistinct. The furrows on the third and fourth segments impunc-

tate; the fifth segment in part and the apical six segments are black. Stigma

ochraceous at the base; in the first cubital cellule there is an oblique cloud, which is

continued into the first discoidal cellule. |

t 26. Iphiaulax piliventris. (Tab. XIV. fig. 9, 2.)

hger; abdominis segmentis 1°-4™ rufis; alis nigris, basi fere hyalinis, stigmate nigro, basi ochraceo. @.

Long. 12 millim.; terebra fere 3 millim.

Hab. Panama (Boucard).

Antenne stout, of nearly equal thickness, microscopically pilose. Head densely

covered with longish hair, whitish on the face, fuscous on the vertex; broadly excavated

above the antenne; ocelli surrounded by a furrow; face aciculated. Pleure and

metathorax covered with long pale hair. Petiole excavated at the base; the inner furrow

commencing at the end of the excavation, from which it is clearly separated, about three

times longer than wide, and with two transverse keels in the centre; the outer furrow

half the width of the inner one, the separating keel sharp ; the central part a little longer

than wide. There is a shining, impunctate, triangular area in the centre of the second

segment at the base, surrounded by a furrow, which is widest and deepest at the apex,

and is continued as a wider oblique furrow down the side. Suturiform articulation

wide and moderately deep, not striated; the furrow on the third segment deep,

especially at the side, the one on the fourth segment narrow, but fully as

deep.

Differs from J. suavis in having the abdomen broader ; the depression surrounding the

area on the second segment continuous, and not on the apical part only, its deeper

apical part being also much less in size; the basal third of the wings subhyaline

(those of J. swavis being uniform in tint), and the base of the stigma more broadly

ochraceous.

IPHIAULAX. 347

x The group of I. PERSECUTOR.

Keel on the second segment dilated at the base, the remainder sharp, narrow, reaching

nearly to the suturiform articulation ; the space on either side of it but slightly

depressed, and marked with some stout striations ; the lateral furrow oblique.

Suturiform articulation wide, strongly longitudinally striated ; the second furrow

deep and usually striated. Body reddish, the head and legs black ;. wings

blackish. (Species 27-33.)

A. No keel on the side of the second segment dividing the oblique depression into two.

(Species 27-32.)

1 (2). Abdomen narrow, longer than the head and thorax united ; second \

cubital cellule on the lower side longer than the third cellule ; |

the second segment not striated on either side of the keel;

wings smoky ; terebra nearly as long as the thorax and abdomen

united . . . . . soe ee » os 6 . . abaculus.

2 (1). Abdomen broad, not longer (or scarcely longer). than the head

and thorax united, the second segment more or less striated

’ on either side of the keel.

3 (4). Stigma testaceous; wings lightly smoky; the second segment

punctured on either side of the striated central part . . . . argentifrons.

4 (8). Stigma black or fuscous; wings dark smoky; the second segment

not punctured.

5 (6). Second segment strongly striated to the apex ; wings with a dark

cloud atthe apex ... . woe ee ee ew ee persecutor.

6 (5). Second segment not strongly striated to the apex; wings without

a dark cloud at the apex.

7 (8). The second furrow in the abdomen broad and crenulated ; stigma

light testaceous on the lower side . . «. . . «. «. «© . « aztecus.

8 (7). The second furrow narrow, not crenulated ; stigma black.

9 (10). The basal part of the keel on the second segment nearly as long as

broad ; the petiole with an oblique slope; abdomen as long as

the head and thorax united . . . . . . . . . montezuma.

10 (9). The basal part of the keel on the second segment much broader

than long; petiole with almost a vertical slope; abdomen not

much longer than the thorax. . . . . . . . . . . « chontalensis.

a. The second furrow in the abdomen crenulated. (Species 27-29.)

Kor. Iphiaulax persecutor.

Ferrugineus ; capite, antennis, prosterno pedibusque, nigris; alis fumatis, apice fusco; apice abdominis seg-

mento 2° striolato. @.

Long. 10 millim.; terebra 6 millim.

Had. Guatemata, El Reposo 800 feet (Champion).

2 yy 2

348 HYMENOPTERA.

Antenne longer than the body, microscopically pilose, tapering distinctly towards the

apex. Head densely covered with longish white hair, except on the vertex; front but

little depressed ; a very deep and moderately wide, shining furrow running down to the

antenne and a little below them; the sides bordering the furrow semiopaque, obliquely

striated. ‘The breast, pleura, and metanotum sparsely covered with longish white hair ;

the metanotum with a rather abrupt, sharp slope. Petiole semiperpendicular ; the keel

separating the furrows sharply erect, large, the inner furrow the widest and with a few

stout transverse striations ; a longitudinal keel on the apical part of the central space,

which is aciculated on each side of the keel. Second segment depressed laterally,

coarsely longitudinally striated ; a stout keel down the centre ; suturiform articulation

broad, deep, the upper fork much narrower and shallower than the lower, coarsely lon-

gitudinally striated to the apex; second furrow narrower, deep; the part behind this

smooth, shining, impunctate, and much lower than the apex of the preceding segment ;

third furrow nearly as wide and deep as the second, but shorter, becoming united to the

segment a little beyond the middle; the apex of the segment raised, so that there is a

furrow behind it. Wings smoky, the apical third blackish ; cubital cellules wide, the

second much shorter than the third; the recurrent nervure almost interstitial. Man-

dibles reddish, the tips black.

Differs from J. aztecusin being larger and stouter; the antenne stouter ; the abdomen

wider and much more strongly striated; the third segment striated throughout; the

suturiform articulation also striated at the sides ; the ovipositor longer ; and the cubital

cellules wider.

‘ 28. Iphiaulax aztecus. (Tab. XIV. fig. 10, 2.)

-testaceus; capite, antennis, prosterno pedibusque, nigris; apice abdominis segmento 2° vix striolato ; alis.

fumatis, stigmate testaceo. 9.

Long. 8 millim. ; terebra 4 millim.

Hab. Mexico, Orizaba (Bilimeh).

Antenne longer than the body, tapering towards the apex; third joint about one

fourth longer than the succeeding one; microscopically pilose. Face and the sides of

the head densely covered with long white hair; front scarcely depressed above the

antenne, semiopaque, aciculated ; a deep furrow leading down from the ocelli. Breast,

sides, and metathorax covered sparsely with longish pale hair; metanotum with a gradual

slope. Inner furrow of the petiole wide, moderately deep, closely punctured ; the outer

furrow much narrower and somewhat deeper. Second segment with a few coarse lon

gitudinal strie at the base; two oblique deep depressions laterally, and a stout kee.

down the centre; first transverse furrow wide, deep, strongly longitudinally striated, the

basal fork narrower than the apical one; second furrow narrower, but as deep, stoutly

crenulated ; third furrow obsolete. Wings slightly fuscous; stigma testaceous on the

lower side; the recurrent nervure interstitial.

. [PHTAULAX. | 349

ix 29. Iphiaulax argentifrons. (Tab. XIV. fig. 11, ¢.)

errugineus ; antennis, capite, prosterno pedibusque, nigris ; alis fusco-hyalinis, stigmate testaceo. 9.

Long. 8 millim.; terebra 4 millim.

Hab. Guatemata, Capetillo (Champion).

Antenne stout, scarcely tapering towards the apex. Head with the face, back, and

sides covered with rather long pale hair; the face coarsely obliquely punctured ; vertex

and front semiopaque, finely punctured ; no furrow running down from the ocelli. The

two furrows on the petiole lie parallel, are finely punctured, wide, and moderately deep,

the inner furrow wider than the outer ; centre of the petiole pitted. Second segment with

an oblique depression on each side, irregularly reticulated ; a small shining space at the

base in the middle, from which proceeds a longitudinal keel ; first transverse furrow very

broad, coarsely longitudinally crenulated, the lateral branches short; second furrow

narrower, also crenulated, running laterally backwards towards the base of the segment ;

third furrow deeper, shining, impunctate. Wings light fuscous, the stigma testaceous,

the nervures fuscous ; recurrent nervure nearly interstitial.

A broader species than J. aztecus; the wings lighter in tint; the recurrent nervure

not interstitial ; the antenne stouter; the head much more densely clothed with hair,

especially above the antenne ; the second segment wrinkled and striated throughout, and

the central keel narrower. The knees, the apical joint of the trochanters, the base and

apex of the hind coxe, and the apices of the fore tarsi are testaceous.

b. The second furrow not striated. (Species 30-32.)

a. The sides of the second segment on either side of the keel striated. (Species 30 & 31.)

L 30. Iphiaulax montezuma. (Tab. XIV. fig. 12, 2.)

rrugineus ; capite, antennis, prosterno pedibusque, nigris ; abdomine quam thorax longiore ; alis fuscis, stigmate

nigro. 9.

Long. 10 millim.; terebra 5 millim.

Hab. Mexico (Bilimek).

Antenne a little longer than the body, moderately stout, tapering towards the apex.

Head sparsely clothed with hair; face finely aciculate. Thorax impunctate, the breast

and metathorax pilose. Petiole with the furrows very broad ; the outer furrow narrowed

at the base, the inner one obscurely pitted, the keel separating the two stout, oblique,

and covering the outer furrow at the base; the centre with a keel down the middle;

the sides somewhat rough. Second segment with an oblique depression on each side ;

a keel down the centre, originating in a broad, smooth, shining space; the surface

roughened, with a few longitudinal irregular keels; first transverse furrow broad and

deep, longitudinally coarsely striated, the middle as deep as the sides; apical fork

deeper than the basal one; second transverse furrow deeper than the first, but narrower.

The depression at the base of the fourth segment deep, narrower than the second

350 | | HYMENOPTERA.

furrow. Wings dark smoky, the stigma dull fuscous, lighter on the lower side; the

recurrent nervure interstitial.

31. Iphiaulax chontalensis.

Flavo-testaceus ; capite, antennis pedibusque nigris ; alis fere fumatis, apice fuscis. 9°.

Long. 8 millim.; terebra 5 millim. ;

- Hab. Nicaragua, Chontales (Janson).

Face coarsely punctured, covered (as are also the sides) with longish white hair ; front

scarcely depressed; a deep furrow going down from the ocelli. Petiole with the inner

furrow wide, shining, impunctate, curving round, and much widened at the base, so that

the centre is somewhat triangular at the apex; outer furrow narrower, deep. Second

segment with a deep oblique depression on each side ; a keel down the centre (but not

reaching to the apex) arising from a broad base, and with a deep depression on each

side, and a few oblique striations. Suturiform articulation wide, deep, coarsely longi-

tudinally striated, the lateral branches narrow ; second transverse furrow much narrower,

becoming united to the base of the segment a little before the sides are reached, coarsely

striated ; the third furrow much shallower. .

Differs from J. montezuma in being smaller, the wings darker at the apex ; the petiole

subvertical, the abdomen shorter, the basal part of the keel on the second segment

longer; the second segment not distinctly striated at the base, the second furrow

deeper and waved; and the colour of the body lighter and (especially the abdomen) of

a yellower hue.

B. The oblique depressions on the second segment impunctate and not striated, the segment

itself not striated; suturiform articulation only striated in the middle. The

second cubital cellule longer than the third, at least on the lower side. (Species

32.)

The long and comparatively narrow abdomen of this species separates it readily from

the others recorded here.

32. Iphiaulax abaculus. (Tab. XIV. fig. 23, 2.)

Rufo-testaceus ; antennis, capite, prosterno pedibusque, nigris; alis fumatis, stigmate nigro; antennis

longis. &.

Long. 9 millim.; terebra 7 millim.

Hab. Costa Rica, Cache (Rogers).

Antenne nearly as long as the body, slightly microscopically pilose, of nearly equal

thickness throughout. Face and sides of the head covered with long white hair ; front

but slightly depressed in the middle; the furrow rather broad and shallow. Head not

much developed behind the eyes (which are large, oval, and margined), and narrowing

IPHIAULAX. 301

sharply posteriorly. Sides of the thorax sparsely covered with long white hair; meso-

notal sutures moderately well defined ; the metathorax with a gradual slope to the apex.

Abdomen as long as the head and thorax united; a little wider than the mesothorax ;

becoming a little dilated to the end of the third segment, then gradually narrowed to

the apex ; the petiole semiobliquely raised from the base. Petiole excavated at the

base, the central part raised, roundly contracted at the apex; a furrow in its centre at

the base; the inner furrow wide and deep and commencing a little in front of the

middle, the outer one longer and much narrower. Second segment with the basal

part of the central keel broader than long and sharply narrowed towards the apex;

the keel proper narrow and not reaching quite to the apex, and with a narrow,

not very clearly defined, furrow on either side; the lateral furrow oblique, wide, and’

deep. Suturiform articulation wide, not very deep ; indistinctly crenulated ; the basal

branch straight, oblique, the apical branch curved. The furrow on the third segment

is narrow and not very deep. Wings longish, light fuscous; the nervures and stigma

blackish-fuscous ; the second cubital cellule long, narrow, nearly as long as the third,

and of almost equal width throughout.

B. A stout longitudinal keel on the side of the second segment, dividing the oblique depres-

sion in two; the second segment not striated, impunctate, the second furrow

narrow, shallow, impunctate ; thorax flat, much narrower than the abdomen ; wings

almost hyaline, the apex darker. (Species 33.)

88. Iphiaulax canescens.

Thorace luteus; abdomine testaceo, antennis, capite pedibusque, nigris ; alis longis, fumatis, apice fere fusco,

stigmate nigro. 9.

Long. 10 millim. ; terebra 10 millim.

Hab. Nicaraeva, Chontales (Janson).

Head sparsely covered with longish white glistening hairs; face opaque, finely

striated (so far as can be made out through the hair); two deep depressions (longer

than broad) above the antenne, separated by a broad keel going down from the ocelli ;

a short acute depression below the antenne; palpi fuscous. Thorax longish, the sides

parallel, not bulging out in the middle, and not much narrowed at the base and apex ;

above flat, the metanotum with very slight and gradual slope to the apex; the pro-

sternum and metathorax covered with long white glistening hair; metapleure obscurely

punctured. Abdomen not much longer, but much wider, than the thorax. Petiole flat

in the centre ; a depression on each side at the apex, the centre there raised somewhat,

and with a longish oblique depression -on each side of the raised part; the inner keel of

the inner groove acute, very broad and deep, the outer keel obliterated. Down the

centre of the second segment is a distinct keel, dilated at the base; there is an oblique

depression on each side of it, bounded by an acute keel; on the outer side of this isa

352 HYMENOPTERA.

longish, deep, semioblique furrow. Suturiform articulation broad, moderately deep,

-crenulated ; an oblique furrow of half its width runs to the side; the side also crenu-

lated, but not so strongly. Wings longish, smoky, darker at the apex. Thorax

rufous; abdomen of a yellower and lighter tint.

The group of I. QUADRIPUNCTATUS.

Body red, the head, the prosternum, the apex of the abdomen from the fourth

segment, and the legs, black ; wings deep fuliginous ; antenne black, longer than the

body. Petiole shining, impunctate. Area on the second segment rounded at the

base, becoming gradually narrowed to a little beyond the middle, then abruptly nar-

rowed, so that the basal half is much wider than the apical half ; on either side of

this narrowed part is an elongated fovea; there is a shallow, narrow depression on

either side of the basal part, this depression leading into the lateral one, which is

wide and moderately deep. Suturiform articulation smooth, impunctate, not

striated. (Species 34.)

Differs from the group of I. volcanicus in the form of the area on the second seg-

ment, and in having two fovee on the petiole.

34. Iphiaulax quadripunctatus. (Tab. XIV. fig. 25, 3.)

Ryfus ; antennis, capite, prosterno, abdominis segmentis 4°-7™ pedibusque, nigris ; alis longis, fuliginosis. ¢ 9.

Long. 13:5 millim. ; terebra 12 millim.

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Antenne stout, as long as the body ; third joint contracted towards the base, a little

longer than the fourth. Head broadly depressed above the antenne; face opaque,

shagreened ; sparsely covered with pale hairs. Petiole raised in the middle, the base

depressed ; two elongated oval punctures placed side by side in the middle towards the

centre; the inner furrow broad, especially at the apex; the outer furrow narrower and

placed lower down, and with a pair of keels down the centre. Second segment raised

in the centre at the base, the raised part becoming narrowed gradually to the apex (it

reaches a little beyond the middle of the segment); at its apex is an elongated

puncture on each side, these being nearly double the length of those on the petiole,

but they are not so clearly defined and separated at the base ; along the side is a

depression, curved at the base; the suturiform articulation is shining, impunctate,

bifurcating in two at the sides, and not very deep in the middle; there is a narrow

transverse groove at the apex of the segment.

In the male the raised part on the second segment is more acutely pointed at the

apex, and narrower generally than in the female; and the punctures at the apex are

not, at the base, separated at all from the lateral depression.

IPHIAULAX. 353

The group of J. BAsIMACULA,

The keel on the second segment in the female broad, gradually narrowed to the apex

(which is not acute), reaching to the apical third of the segment, and bordered by a

depression ; in the male narrow, raised, dilated at the base, and not bordered by a

furrow. Suturiform articulation broad, bifurcating near the middle, obscurely

striolated at the edges, especially in the male. Body and legs black, except the

basal segments beneath in the female, and sometimes above in the male. Wings

black. (Species 35.)

If I have correctly united the sexes, it would appear that the keel on the second

segment may vary in form in the sexes of the same species.

X 35. Iphiaulax basimacula. (Tab. XV. figg. 1, 2, 2, 3.)

Niger, abdominis basi sordide rufo ; alis fuliginosis. ¢ 9.

Long. 15-17 millim.; terebra 13-14 millim.

Hab. Mexico, Valladolid in Yucatan (Gaumer); GuatemaLa, Zapote, San Gerdénimo,

Purula (Champion); Panama (Boucard), Caldera in Chiriqui 1200 feet, Tolé (Cham-

pion).

Antenne stout, as long as the body, with upwards of seventy joints. Head covered

with blackish hair, the face obscurely punctured; front depressed in the centre, the

furrow narrow; eyes oval, bordered. Metathorax (especially at the sides) sparsely

covered with rather long white hair. Abdomen a little longer than the head and thorax

united, bulging out in the middle. Petiole with the central part narrowed at the apex ;

the base deeply depressed; two oblong shallow fovee in the middle; the inner furrow

moderately deep and broad, the outer furrow placed lower down on the opposite side of

the keel. ‘The oblique depression on the second segment is wide and moderately deep.

The furrow on the third segment nearly straight, narrow, the other furrows invisible.

The apex of the abdomen covered with longish black hair. Legs stout, densely pilose.

Wings long; the recurrent nervure not interstitial; two small hyaline fascie in front of

the latter, and one at its base behind.

In the male the central part of the petiole is not narrowed behind, and the furrow

bordering it is much wider and not curved at the apex as in the female; there is an

obscure keel on the third segment in the centre, and the furrow at its apex, and also

that at the apex of the fourth segment, is wider and deeper. ‘The upperside of the base

of the abdomen is entirely black above, or the petiole and more or less of the second

segment may be reddish.

BIOL. CENTR.-AMER., Hymenopt., February 1887. 2 ZL

354 HYMENOPTERA.

The group of I. voLCANICUS.

The keel on the second segment slightly dilated at the base, the remainder acute, sharp ;

a wide hollow on either side of it; the lateral furrow angled in the middle. Suturi-

form articulation smooth or finely striated. -The other furrows narrow, smooth,

impunctate. Abdomen and sometimes part of the thorax red or yellow. Wings

black. (Species 36-49.)

A. Thorax and abdomen red ; antenne, head, prosternum, and legs black ; wings

fuscous. Suturiform articulation not striated. (Species 36.)

36. Iphiaulax volcanicus.

Luteus, prosterno, antennis, capite pedibusque nigris; alis nigris. 9°.

Long. 13-14 millim.; terebra 8-9 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Antenne less than three fourths of the length of the body, stout, not tapering much

towards the apex; microscopically pilose; scape as long as the longitudinal diameter

of the eye; apical joint very short, oblique. Face closely punctured, opaque; a furrow

running down from the ocelli; the lower region and the sides of the head bearing a

few longish hairs; palpi pilose, black. Thorax shining, impunctate. Petiole deeply

excavate at the base; inner furrow wide, moderately deep, the outer furrow separated

from it by a high and sharp ridge, the latter itself wider and situated on a lower level

than the inner, especially at the base. Second segment with an indistinct keel down

the centre at the base, and an oblique, broad depression on either side; the transverse

keel broad, not very deep. Apex of the abdomen pilose.

B. Abdomen honey-yellow, often black at the apex. (Species 37-41.)

1. Suturiform articulation erenulated. (Species 37-40.)

a. Wings smoky-hyaline, with a large fuscous cloud at the stigma and another at the

apex. Apical joints of the palpi fuscous. The keel on the second segment becoming

gradually narrower to the apex. Apical third of the abdomen black. (Species 37.)

ger, abdominis segmentis 1°-4™ flavo-testaceis ; alis fere hyalinis, fusco-bifasciatis, stigmate nigro. @.

ng. 12 millim.; terebra 11 millim.

Hab. Guatema.a, El Reposo 800 feet (Champion).

slo Iphiaulax humerosus. (Tab. XIV. fig. 14, 2.)

Antenne as long as the body, stout, almost bare. Head shining and impunctate on

the top; the face somewhat opaque, obscurely punctured, sparsely covered with long

-TPHIAULAX. 355

fuscous hair; front depressed in the centre, the furrow rather deep. Petiole with the

central part of nearly equal width from the base; the base depressed; the apex trans-

verse ; the inner furrow wide, deep, twice the width of the outer one. The keel on the

second segment becomes gradually narrowed to the apex, and reaches nearly to the end

of the segment; its basal part not distinct from the rest, and there is a shallow

depression on either side of it; the lateral furrow wide, curved, and reaching to the

apex. Suturiform articulation wide, crenulated in the centre, the lateral branches

smooth. ‘The furrow on the third segment is quite close to the base, and does not

reach to the sides. The abdomen is a little longer than the head and thorax united,

and becomes somewhat sharply narrowed from the third segment; the petiole rises

gradually from the base. Fore wings with the cloud at the stigma not so long as

the petiole, and contracted in the centre, the apical cloud commencing a little beyond

the third cubital nervure ; the second cubital cellule (at least on the lower side) a little

longer than the third; stigma black, the nervures testaceous in the hyaline parts of the

wings. Hind wings light smoky-hyaline, darker at the basal half.

b. Wings uniformly smoky. The keel on the second segment dilated at the base; the

dilatation distinct, so that the keel does not become gradually narrowed to the apex.

(Species 38-40.)

a. No keel on the third and fourth segments. Palpi black. Abdomen becoming

gradually thickened to the apex of the fourth segment, then somewhat sharply

narrowed to the apex; a stout keel dividing the lateral depression on the second

segment in two; the basal branch of the suturiform articulation nearly, if not

quite, straight, the apical branch curved and reaching to, or a little beyond, the

middle of the segment; the latter with a transverse depression at its apex; the

furrow on the third segment not striated, curved. (Species 38 & 39.)

1 (2). A Y-shaped keel on the petiole; anterior tarsi white. . . . . fuscidens.

2 (1). No Y-shaped keel on the petiole; anterior tarsi black . . . . verepacis.

iger, mesonoto strigaque metanoti sordide rufis, abdomine tarsisque anticis flavo-testaceis; alis fuscis. 9.

Long. 11 millim.

Hab. Mexico (Sallé).

Antenne as long as the body, tapering perceptibly towards the apex; microscopically

pilose; the joints clearly separated; basal joint with a short petiole, shorter than the

third and fourth joints united, the apex produced on the lower side. Cheeks coarsely

and irregularly rugose, opaque, pilose; face smooth, shining; front deeply excavated ;

a furrow (wide at the base, gradually narrowed towards the apex), margined on either

side, proceeding from the ocelli to the antenne. Abdomen scarcely twice the length

| 2 zz 2

he 38. Iphiaulax fuscidens. (Tab. XIV. fig. 19, ¢.)

356 HYMENOPTERA.

of the thorax, smooth, shining, flat, the apex fully as wide as the base. Petiole deeply

excavated on the basal third; the central part raised, and keeled on either side.

Second segment with a keel in the centre, the latter doubled at the base, the two

branches uniting about the basal fourth; the lateral depression semi-oblique, deep,

narrow, and on the inner side bordered by a stout keel. Suturiform articulation

situated at the base of the ‘segment, wide, not very deep, and bearing about a dozen

stout keels; from its middle two wide furrows run obliquely to the sides, where they

become transverse and somewhat indistinct ; a little in front of them is a narrow trans-

verse furrow. At the base of the fourth segment is a curved transverse furrow, which

gives origin near its middle to an oblique (but not so sharply oblique as that on the

third) furrow.

i. 39. Iphiaulax verepacis. (Tab. XIV. fig. 15, 2.)

iger, maculis 2 mesonoti sordide rufis, abdomine flavo-testaceo; alis fumatis, stigmate nigro. 2.

Long. 13 millim.; terebra 13 millim.

Hab. Guatemata, Purula (Champion).

Antenne slightly longer than the body, tapering a little towards the apex; the

flagellum covered with an ashy microscopic pile; the scape on the underside with long

white hair. Head large; the face projecting in the middle; an oval depression (not

very clearly defined) over the clypeus; the sides and the cheeks sparsely covered with

white hair, the latter finely punctured. Antennal tubercles large, the space separating

them deep; a longish depression, separated by a raised part in the centre of which is a

fine furrow, over each antenna. Palpi fuscous towards the apex, and covered with

white hair. Abdomen a little shorter than the head and thorax united; becoming

gradually wider to the apex of the fourth segment, then narrowed again to the apex.

Petiole excavated at the base; the raised central part transverse behind, the middle

portion rounded at the apex, the former blistered and bounded by a sharp keel, the

inner furrow being obsolete; the outer furrow placed lower down on the sides, and

wide and deep. Second segment with a narrow and sharp keel which reaches nearly to

the apex, and has a wide oval depression on either side of it; the lateral furrow

oblique, not reaching nearly to the side of the segment, and bounded on the outer

side by a sharp keel, beyond which is a narrower furrow; the extreme edge of the

segment has a sharp margin, inside of which is a narrow furrow. Suturiform articula-

tion wide, the central part bearing eight stout keels; basal branch obscurely crenulated,

the apical branch narrower, more oblique, and reaching beyond the middle of the

segment ; at the apex of the segment is a narrow, shallow, transverse furrow which does

not reach the sides. The furrow at the base of the third segment is narrow, and does

not reach much beyond the middle; a similar furrow at the base of the fourth segment.

TPHIAULAX. 357

6. A keel in the centre of the third and fourth segments. Palpi white.

(Species 40.)

40. Iphiaulax tinctipennis. (Tab. XIV. fig. 16, 3.)

iger, abdomine flavo-testaceo ; articulatione suturiformi striolata ; alis fusco-violaceis. ¢.

Long. 11 millim.

1. Hab. Costa Rica, Cache (Rogers).

Antenne longer than the body, the flagellum of almost uniform thickness; the basal

joints clearly, the apical joints less distinctly, separated; covered with a close

greyish pile. Head nearly as wide as the mesothorax, considerably developed behind

the eyes; the latter large, margined, projecting laterally, and reaching to the base of

the clypeus. Face covered with longish white hair, the centre aciculated ; the furrow

in front wide and deep, and also aciculated. Palpi testaceous. Pleure and sternum

sparsely covered with long pale hairs. Coxe and trochanters on the underside bearing

long white hair. Abdomen longer than the head and thorax united. Petiole obliquely

vertical ; its central part raised, acute at the base, more rounded at the apex; the inner

furrow wide and moderately deep, its margin in the form of an acute irregular keel ;

the outer furrow placed on a much lower plane than the inner one. Second segment

with an acute keel reaching to the apical third, and a narrow furrow on either side;

the lateral furrow wide, deep, and oblique. Suturiform articulation wide, moderately

deep, and not very distinctly crenulated. Third segment with a narrow furrow as deep

as the suturiform articulation; in the centre is a keel reaching to a little beyond the

middle. Fourth segment with a keel similar to that on the second, but not quite so

strongly marked, and scarcely reaching to the middle.

2. Suturiform articulation not crenulated. (Species 41.)

Nee Iphiaulax levis. (Tab. XIV. fig. 17, 2.)

Brécon levis, F. Smith, Descr. New Species of Hym. p. 234 (1879)’.

Had. Guatemata, San Gerénimo, Purula (Champion); Costa Rica, Cache ! (Rogers).

Antenne as long as the body, thick, scarcely tapering towards the apex, closely

covered with a greyish pile; basal joint as long as the following three joints united,

shining, bearing some longish black hairs. Head sparsely covered with longish black

hairs; cheeks punctured; face aciculated; front and vertex shining, the former not

much depressed in the centre and with the furrow wide and deep. Eyes oblong,

reaching nearly to the apex of the clypeus, the head retreating sharply behind them.

Thorax shining, impunctate, sparsely pilose; the metathorax with a gradually curved

slope. Petiole oblique, its inner furrow wide and moderately deep ; the apex of the central

part somewhat acutely rounded. Second segment with a small raised triangular area at

the base, from which a flat, not very clearly defined, keel proceeds to a little beyond

358 HYMENOPTERA.

the middle; the lateral furrow oblique, wide, and not very deep. Suturiform articula-

tion slightly curved, not very wide or deep, and shining, impunctate; the second

furrow shallow.

C. Abdomen, and the thorax more or less, vermilion-red. (Species 42-49.)

—_

(8). Suturiform articulation crenulated.

(7). Mesonotum, except a black line at the tegule, red.

3 (4). The depression on either side of the keel wide, deep, continuous with

the oblique lateral one; the keel sharp, reaching quite near to the

cw)

apex; ovipositor not much longer than the abdomen . . . . . megaptera.

4 (8). The depression on either side of the keel shallow, not continuous with

the lateral one; ovipositor as long as the body.

5 (6). Face irregularly striated ; lateral branches of the suturiform articula-

tion striated . 2. 1. 1 1. we ee we ew ee ww. bjectus.

6 (5). Face not striated; lateral branches of the suturiform articulation not

striated . . . we ee ww we ww ee ew VaGabundus.

7 (2). Thorax entirely black . woe ee wee we ew ww wt btlimeki.

8 (1). Suturiform articulation not crenulated or striated.

9 (14). Mesonotum in front red.

10 (11). Palpi black ; pronotum, the greater part of the mesonotum, scutellum,

and metanotum red; ovipositor longer than the body. . . . . salvini.

). Palpi white; mesonotum reddish in front.

12 (13). A stout keel in the middle of the suturiform articulation . . . . infirmus.

). No keel in the middle of the suturiform articulation. . . . . . fuscipalpis.

). Thorax black. . 2 2 2 2 we ee ww we ew ww ee gratvidus.

1. Suturiform articulation crenulated. (Species 42-45.)

i 42, Iphiaulax megaptera. (Tab. XV. fig. 5, 2.)

iger, mesonoto abdomineque rufis; alis magnis, fuliginosis ; terebra quam corpus breviore. 9.

Long. 10 millim.; terebra fere 8 millim.

Hab. Mexico, Tacubaya (Bilimeh).

Face opaque, impunctate, sparsely covered with whitish hair; front broadly, but not

deeply, depressed above the antenne, without any central furrow; tips of the mandibles

piceous. Antenne stout, microscopically pilose; the third joint a little longer than the

fourth, and narrowed in the middle. Thorax shining, impunctate. Metanotum with

rather a steep slope from the middle. Petiole semiperpendicular; the two furrows on

the same level, wide and deep, the outer one ending a little in front of the middle, the

dividing partition stout. Second segment with a stout, broad keel down the centre,

reaching nearly to the apex; a large oblong depression on each side of it, uniting at

the base with a wider depression, which latter goes somewhat obliquely down the sides ;

transverse furrow moderately wide, stoutly, longitudinally striated, the apical branch

IPHIAULAX. 859

the longest and curved; the keel scarcely striated; the two hinder transverse furrows

narrow and moderately deep. The apical segment deeply and widely depressed

(perhaps accidentally) in the centre above. Wings very large, deep fuscous-black; the

recurrent nervure interstitial ; cubital cellules large and wide, the second much shorter

than the third and with its upper and lower sides of nearly equal width at the apex.

This is the largest species in the section; it will readily be known from its allies by

the characters given in the synoptical table, and also by the much darker and larger

wings.

K 43. Iphiaulax abjectus.

/ oN

iger, pronoto, mesonoto, scutello abdomineque rufis; facie striata; articulatione suturiformi lateribus striolata ;

alis fuscis. 9.

Long. 8 millim. ; terebra fere 10 millim.

Hab, Mexico, Presidio (forrer).

Antenne stout, not much longer than the thorax and abdomen united; basal joint

longer than the third and fourth joints together, its apex transverse. Face transverse,

rugose, sparsely pilose; apex of the clypeus not projecting; front but very slightly

depressed in the middle, rugose, the furrow narrow and of equal width; vertex shining,

impunctate. Abdomen about as long as the head and thorax united. Petiole semi-

perpendicular; the central part pear-shaped (the narrow end at the base); the inner

furrow broad, straight, moderately deep, and bounded on the outer side by a sharp

keel, the outer furrow narrower. Second segment with a sharp keel reaching to a

little beyond the middle, and issuing from a broad base; a narrow furrow on either side

of the keel curving round at the base into the oblique lateral depression, the latter

being of moderate width. Suturiform articulation narrow, moderately deep, the basal

branch half the size of, and shallower than, the apical branch; the second articulation

narrower, situated quite close to the base of the segment.

44. Iphiaulax vagabundus. (Tab. XIV. fig. 20, ¢.)

Niger, medio mesonoti, scutello, pronoto abdomineque rufo; facie levi; articulatione suturiformi lateribus

non striata; terebra quam corpus longiore; alis fuscis. 2.

Long. 10 millim.; terebra 12 millim.

Hab. Mexico, Presidio (Forrer).

Antenne as long as the body, moderately stout, tapering towards the apex, the third

joint a little longer than the fourth; covered with a pale microscopic pile. Head and

palpi covered with a glistening white, rather long pubescence ; face semiopaque,

obscurely punctured; front depressed above the antenne (but not deeply), finely

rugose, opaque, the central furrow deep; tips of the mandibles piceous. Thorax

impunctate, shining; sternum, pleure, and metathorax covered with long white hair.

Petiole with the tongue-shaped central portion shining, impunctate; the two furrows

360 HYMENOPTERA.

on a level, wide, moderately deep. A sharp keel down three fourths of the second

segment; a narrow depression on either side of it, joined at the base to a much wider

depression, the latter extending from the side ; first transverse furrow wide and mode-

rately deep in the centre, the lateral branches narrower; the basal fork straight, the

apical one curved; second transverse furrow deep, straight, the third nearly obsolete.

This is a somewhat larger and stouter species than J. abjectus; the abdomen is longer

compared to the thorax; the antenna are somewhat longer and stouter; the hair on

the metathorax is much denser and longer; and the black colour of the metathorax

does not run into reddish as in J. abjectus. The head is not striated or wrinkled in any

way, and the suturiform articulation is not so strongly striated.

45. Iphiaulax bilimeki.

‘Niger, abdomine rufo; alis fuscis. @.

Long. 8°5 millim.; terebra fere 4 millim.

Hab. Mexico, Orizaba (Bilimek).

Antenne a little longer than the body; basal joint longer than the third, becoming

gradually thicker towards the apex, the latter oblique. Head below the antenne

densely covered with long white hair; face nearly transverse; front but very slightly

depressed in the centre; ocelli scarcely raised; the furrow leading down from the latter

narrow, shallow. Abdomen not much longer than the thorax; wider than the meso-

thorax, and becoming narrower from the middle towards the apex. Petiole deeply

excavated at the base; the central part nearly triangular (the narrow end at the base) ;

the inner furrow wide and shallow, and bearing a few oblique striations, the outer furrow

narrower and deeper. In the centre of the second segment is a stout keel (the broad

basal part of which is triangular), occupying three fourths of the segment; the furrows

bounding the keel shallow, the lateral depressions oblique and becoming wider towards

the apex. Suturiform articulation wide, longitudinally striated in the middle; the basal

branch narrower and deeper than the apical one; the second articulation not much

more than half the length of the first, irregularly striated. Wings dark fuscous,

darkest at the base; the second cubital cellule much shorter than the third.

2. Suturiform articulation not crenulated or striated. (Species 46-49.)

» 46. Iphiaulax salvini. (Tab. XIV. fig. 21, ¢.)

; antennis, capite, pleuris, sterno, mesonoti lateribus pedibusque, nigris; terebra quam corpus longiore ;

alis fuscis. 9.

Long. 12 millim.; terebra 11 millim,

Hab. Guatemaza, Cubilguitz in Vera Paz (Champion).

Antenne stout, almost bare; the joints somewhat oblique at the apex; third joint a -

little longer than the fourth, the basal one nearly as long as the third and fourth

together. Head densely covered with rather long white hair; the face opaque,

IPHIAULAX. 361

obscurely punctured; vertex shining; front scarcely depressed above the antenne, the

central furrow wide and deep. Thorax shining, impunctate. Abdomen more than one

half longer, and scarcely broader, than the thorax; the segments deeply incised at the

base. Petiole gradually sloping to the apex and not subvertical; the central tongue-

shaped area shining; the inner furrow wide and deep, obscurely striated; the outer

keel stout. Second segment with a stout keel down the centre reaching to beyond the

middle; on either side of the keel deeply depressed, the depression becoming widened

at the base and there continuous with another large, deep, oblique one; the trans-

_ verse furrow wide, deep, bifurcating a little beyond the centre. The edge of the

pronotum, the mesonotum (except at the tegule), the scutellum (except narrowly

behind), and the metanotum broadly at the base, red. Wings smoky; the stigma

fuscous on the lower side.

The long and comparatively narrow abdomen with rather flat petiole distinguishes

this species from its allies. The hair is sparse but somewhat long.

47. Iphiaulax infirmus.

Niger, mesonoto abdominisque segmentis 1°-6™ ferrugineis; alis fumatis. ¢.

Long. 7°5 millim.

Hab. Mexico (Bilimeh).

Head covered with long white hair, obscurely punctured ; apex of the clypeus scarcely

projecting; front but very slightly depressed ; a deep crescent-shaped fovea in front of

the ocelli. Abdomen longer than the head and thorax united, but scarcely so wide as

the mesothorax. Petiole with the central part pear-shaped ; the inner furrow wide and

deep and separated from the outer one by a stout keel. Second segment with a stout

keel running down the basal half, the keel not bordered by a distinct furrow; the

lateral depression wide and deep, reaching beyond the middle. The suturiform articu-

lation of moderate width and bifurcating quite close to the middle; the basal branch

not much narrower than the apical one; the second and third articulations not much

narrower than the first. The mesonotum is red infront of the scutellum, except a

large black mark on each side in front of the tegule ; the extreme apex of the abdomen

black; the pilosity of the latter is rather sparse. The stigma on the Jower side and

the nervures towards the apex are fuscous.

KK 48. Iphiaulax fuscipalpis.

iger, mesonoto, linea pronoti, abdomineque ferrugineis; alis fumatis. ¢.

Long. 8°5 millim.

Hab. Guaremata, Capetillo (Champion).

Antenne as long as the body, stout, scarcely tapering towards the apex; microsco-

pically pilose; basal joint stout, not much shorter than the following three joints

united. Face covered with long white hair, transverse, rugose; clypeus scarcely pro-

BIOL. CENTR.-AMER., Hymenopt., February 1887. 3 AA

362 HYMENOPTERA.

jecting; front finely rugose, the central furrow distinct; vertex obscurely aciculated.

Abdomen a little longer than the head and thorax together. Petiole semiperpen-

dicular; the central part narrow at the base, becoming gradually broader towards the

apex; the inner furrow wide, moderately deep, impunctate, the outer furrow much

narrower. Second segment with a sharp keel down the basal three fourths, the keel

bounded by a narrow furrow; the lateral depression curved, of nearly equal width

throughout. Suturiform articulation shallow, moderately broad; the second and third

articulations much narrower.

A stouter and larger species than J. infirmus; the head and thorax much more

densely and uniformly pilose; the abdomen wider, if not shorter; the lateral depression

on the second segment deeper and reaching nearly to the apex; the central keel stouter ;

the transverse furrow on the apex of the second and third segments much less distinct.

In both species the stigma and nervures incline to fuscous.

% 49. Iphiaulax gravidus. (J. capetillensis, Tab. XIV. fig. 24, 3.)

iger, abdomine ferrugineo; alis fumatis. ¢.

Long. 9 millim.

Hab, Guatemaa, Cerro Zunil 4000 feet (Champion).

Antenne as long as the body, tapering slightly towards the apex; basal joint

produced at the apex beneath. Face transverse, semiopaque, aciculate, clypeus not

projecting at the apex, front depressed in the middle, the furrow wide, finely rugose.

Abdomen a little longer than the head and thorax together, not much wider than the

mesothorax. Petiole semiperpendicular ; central portion pear-shaped ; the inner furrow

narrow, its outer keel higher than the centre of the petiole, the outer furrow somewhat

narrower. Second segment with a stout keel in the centre, the keel extending a little

beyond the middle, the bounding furrows narrow; lateral depression oblique, deep.

Suturiform articulation narrow; second articulation not much narrower than the first,

and placed a little before the middle of the segment; the third articulation a little

narrower than the second, and situated not so far forward.

/ The group of I. cRUENTATUS.

The area on the second segment wedge-shaped, longer than broad, the depression on either

side of it narrow and not very deep, the surface of the latter rough; the lateral

furrow oblique, straight ; suturiform articulation longitudinally striated, as is also

the neat furrow. Abdomen vermilion, becoming narrower from the second segment.

Antenne and legs black; thorax rarely entirely black, usually the mesonotum in

front of the scutellum and the edge of the pronotum are red. Wings blackish,

the stigma and nervures at the apex usually more or less fuscous. (Species 50-54.)

The area on the second segment being broader and not prolonged into a keel, but

IPHIAULAX. 363

becoming gradually narrowed to the apex, sufficiently distinguishes this group from the

preceding. The species are very uniformly coloured, deep vermilion.

1 (2). Thorax entirely black. . 2. . 2. 1. 6 1. 6 ee ee ee ee Cruentaius.

2 (1). Mesonotum in front of the scutellum red.

4 (8). Suturiform articulation impunctate. :

5 (8). A raised area in the middle of the second segment at the base; the inner

furrow on the petiole crenulated; metanotum red in the middle.

6 (7). The basal half of the wings much lighter than the apical half; the area

on the second segment distinct, acute at the apex, not originating in

7 (6). The wings uniform in colour; the area on the second segment origi-

nating in the suturiform articulation and dividing it in two, not

acute at the apex . . . . . ... . pugillator.

8 (5). No area on the second segment; metanotum entirely black . . . . paganus.

yas 50. Iphiaulax cruentatus. (Tab. XV. fig. 3, 2.)

Niger, abdomine ferrugineo; terebra quam abdomen breviore; alis fuscis. 9

Long. 9 millim.; terebra 4°5 millim.

Hab. Costa Rica, Cache (Rogers).

Antenne nearly as long as the body, scarcely tapering towards the apex; covered

with pale microscopic pile; basal joint as long as the second and third joints united,

slightly dilated towards the apex, shortly pedunculated. Head densely covered with

rather long grey hair; front but very slightly depressed, and with a narrow keel in the

middle ; face almost transverse; clypeus not projecting, not separated from the face.

Pleure and metanotum covered with long white hair. Abdomen longer than the head

and thorax united, a little broader in the middle than the mesothorax. Petiole shining,

the central part becoming gradually broader towards the apex ; the hinder furrows wide

and deep. Second segment with the wedge-shaped area reaching nearly to the apex,

the furrows bounding it irregular; the lateral depression wide and deep, not reaching

to the apex of the central area. Suturiform articulation not very wide; the striations

moderately strong in the middle, but becoming weaker towards the sides. ‘The suture

on the fourth segment a little narrower, and with the striation nearly as strong as on the

“first; the suture at the base of the fifth segment narrower and not so strongly striated.

The colour of the abdomen is a bright vermilion. Wings rather long, narrow; of a

uniform smoky colour throughout, except that the first cubital cellule is more hyaline ;

stigma obscure ochreous at the base.

51. Iphiaulax teres.

Niger, mesonoto abdomineque ferrugineis; articulatione suturiformi striolata ; alis fuscis. 9.

Long. 8 millim. ; terebra 6 millim.

Hab. Mexico, Presidio (Forrer).

3 AA 2

364 _. HYMENOPTERA.

Head sparsely covered with pale hair Qotow the antenne; the face opaque, finely

rugose, a little projecting in the middle; clypeus slightly projecting at the apex; front

rugose, a little depressed in the centre, where there is no distinct furrow; vertex a

little opaque, impunctate. Abdomen not much longer than the head and thorax

united. Petiole with the central part narrowed a little at the base and apex; inner

furrow wide, irregularly and obscurely rugose, the outer furrow not half its width. Second

segment with a sharp area in the centre; the area longer than broad, ending in a sharp

point a little beyond the middle, and bounded by a narrow furrow which joins the

oblique and very much broader lateral furrow at the base ; the lateral furrow not reaching

to the apex of the central area. Suturiform articulation of moderate width, the second

articulation more curved and narrower; the striation on the latter and on the furrow

on the third segment not very strong. The apical segments are yellowish at the apex ;

the pronotum irregularly reddish on the border. Wings dark fuscous, the stigma

black.

In this species the abdomen is shorter than in J. excuratus; the head more shining

and more developed behind; the extreme. upper edge only of the pronotum red; the

wings darker and, if anything, longer; andthe colour of the abdomen brighter. It is

otherwise easily separated from that species by the area on the suturiform articulation

being blunt at the apex, as well as shorter. .

x 52. Iphiaulax excuratus. (Tab. XV. fig. 6, ¢.)

Niger, linea pronoti, mesonoto, scutello, striga metanoti abdomineque rufis ; alis fumatis, basi fere hyalinis. 9.

Long. 8 millim.; terebra 7 millim.

Hab. GuaTEMALA, near the city (Champion).

Antenne a little longer than the body, very slightly attenuated towards the apex,

almost bare; basal joint about as long as the third and fourth joints united. Head

below the antenne scarcely transverse, obscurely punctured; front not depressed.

Abdomen wider and half as long again as the thorax. Petiole with the central part

comparatively narrow, becoming gradually narrowed towards the apex, the latter trans-

verse ; the inner furrow moderately wide and deep, separated from the outer one by a

stout keel, the outer border of the outer furrow being also stout. Second segment with

a triangular keel in the centre, the keel reaching to a little beyond the middle; the

lateral depression shallow, narrow, and scarcely reaching to the middle. Suturiform

articulation wide, minutely striated, the lateral branches originating a little beyond the

middle; from the centre runs a triangular raised area, surrounded by a furrow. The

second and third articulations are distinct, but narrower than the basal one. The

pronotum is almost entirely red; there is an obscure red mark below the tegule and

below both wings ; the metanotum has a large red mark in the middle. Wings smoky,

the basal half much more hyaline than the apical half; stigma black, fuscous on the

lower side.

~ IPHIAULAX.

onger and narrower

ats inner furrow not so

- Differs from I. pugillator in being a little longer; the

compared to the thorax; the peti le not so much raise

strongly crenulated ; there is no kéeeY dividing the suturiform articulation in the middle,

although there is a raised area in front of it; the thorax bears more red (the meta-

notum having a thin red line only in J. pugillator); and the wings are lighter in colour

at the base.

val 53. Iphiaulax pugillator.

Niger, linea pronoti, mesonoto strigaque metanoti rufis, abdomine ferrugineo; alis fuliginosis. 9.

Long. 8 millim.; terebra 6 millim.

Hab. Mexico, Presidio (Forrer).

Antenne stout, microscopically pilose ; basal joint pedunculated, curved, longer than

the third and fourth joints together. Head sparsely covered with white hair, opaque,

finely punctured; front not depressed, the central furrow narrow. Abdomen longer

than the head and thorax united and much wider than the latter. Petiole deeply

excavated at the base; the central part rounded at the apex; the inner furrow very

wide, but not very deep, the outer furrow scarcely half its width. Second segment with

an acute area (broad at the base, tapering towards the apex) in the centre, the area

reaching to beyond the middle; lateral depression oblique, deep, not reaching to the

apex of the central area. Suturiform articulation wide, moderately deep, the branches

issuing a little beyond the middle of the segment; the second articulation curved,

narrower than the first; the third articulation indistinct. The mesonotum in front of

the scutellum, the edge of the pronotum, and a narrow line down the middle of the

metanotum, red. Wings dark fuscous; the stigma black, fuscous on the lower side;

the nervures fuscous at the apex.

54. Iphiaulax paganus.

“Niger, macula pronoti, mesonoto abdomineque ferrugineis; alis fuscis. 9.

Long. 6 millim.; terebra 5 millim.

Hab. Muxico, Presidio (Forrer).

Antenne stout, microscopically pilose; scape distinctly pedunculated. Head covered

with long white hair; obscurely, the face more strongly, punctured; face transverse ;

front scarcely depressed, the central furrow indistinct. Abdomen distinctly longer than

the head and thorax united, somewhat wider than the mesothorax. Petiole with its

central part wide, but narrowed at the base, the apex transverse; the inner furrow wide

and separated from the narrower outer furrow by a wide keel. Second segment with an

elongate triangular area in the centre, the area reaching a little beyond the middle ;

the lateral depression pear-shaped, reaching nearly to the apex, the latter being wider

than the base and rounded. Suturiform articulation somewhat narrow, the basal

566 HYMENOPTERA.

branch curved; the second articulation curved and narrower than the first; the third

articulation still narrower. The mesonotum, and the edge of the pronotum irregularly,

red. Wings smoky.

This is a smaller and narrower species than any of the preceding; the abdomen is

longer and narrower, being distinctly longer than the head and thorax united, and

becomes gradually narrower from the second segment.

ii. Abdomen punctured. (Species 55-68.)

The group of I. BIFOVEATUS.

Petiole with the central part narrow, the sides nearly as wide as the central part ;

raised, depressed at the base and apex; the depression at the base narrow and deep

(the sides broad on either side of it), being clearly separated from the raised central

part, the latter finely longitudinally striated. Area on the second segment shield-

like at the base, longer than broad, narrowed laterally ; a fine transverse keel

at the apex, from which runs a narrow prolongation (also narrowed laterally

and with a depression on either side of it), the latter not reaching to the apex of the

segment. Lateral depression wide, semioblique, deep in the centre, and impunctate.

Suturiform articulation wide, deep, finely striated in the middle; the basal branch

indistinctly indicated ; the apical branch wide, very deep at the base. Abdomen a little

longer than the head and thorax united, not much wider than the thorax. Head

narrow, considerably developed and narrowed behind the eyes, the latter oval and

reaching nearly to the base of the mandibles. (Species 55.)

This group contains a single very distinct species.

X 55. Iphiaulax bifoveatus. (Tab. XV. fig. 9, 2.)

Niger, pronoto, mesonoto abdomineque rufis ; alis fuliginosis. 9.

Long. 13 millim.; terebra 9 millim.

Hab. Mexico, Ventanas 2000 feet (Lorrer).

Antenne stout, microscopically pilose, the joints closely united. Face sparsely covered

with long white hairs, rugose; projecting broadly in front of the eyes, especially near

the antenne; a deep depression between the latter. Front deeply excavated, the

excavation divided into two large oval fovee by two keels which come down from the

ocelli; the keels widely separated near the antenne, but becoming closely united towards

the centre. Ocelli placed on a raised triangle, surrounded by a shallow furrow. Eyes

large, oblong, projecting. ‘Thorax elongated, flat above ; mesonotum without sutures ;

pronotum in the middle divided into two by a deep furrow. Scutellum flat, narrowed

posteriorly. Metathorax elongated, having a gradual slope to the apex; the oblique

lateral furrow deep and wide. Petiole longer than the second segment; a deep and

IPHIAULAX. 367

narrow furrow at the base, the sides on either side of the furrow finely obliquely striated ;

the central area raised, widened a little towards the apex; inner lateral furrow shallow,

with three stout transverse keels in the centre; the outer furrow narrowed, and with

some stout keels at the base; the space between the furrows flat, broad at the base,

becoming narrowed gradually towards the apex; the central part finely longitudinally

striated ; the lateral part somewhat obliquely striated, except at the apex. Second

segment with the area at the base shield-shaped and longer than broad, the sides

retreating; at the apex of the area are two oval depressions, which are longer than

broad, with the base acute and the apex more rounded; the lateral depression is wide

and deep, and has a longitudinal keel at the apex; the central part bearing a few

shallow punctures. Suturiform articulation wide and deep, striated in the centre. The

furrow on the third segment deep, striated; in front of it the segment is coarsely

rugosely punctured, except at the apex. The fourth segment bears some large shallow

punctures; the fifth segment has but very few punctures.

The group of I. MOLESTUSs.

The area on the second segment twice as broad as long, a broad depression on either

side of it; the base of the segment on either side of the central area raised,

and then depressed in front of the raised part; from the latter, from either

side of the area, run stout keels; the segment itself more or less covered with small

shallow punctures. Eyes not or scarcely reaching to the base of the oral circle.

(Species 56-58.)

1 (4). Abdomen punctured throughout.

2 (3). Abdomen broadly black at the apex; lower half of the stigma and

the nervures at the apex fuscous . . . . . . . . . . « molestus.

3 (2). Abdomen entirely rufous; stigma and nervures entirely black . . pilosellus.

4 (1). The basal one or two segments only punctured . . . . . . . ériangulator.

66. Iphiaulax molestus. (Tab. XIV. fig. 22, 2.)

Niger, abdominis segmentis 1°-3™ rufis ; alis fuliginosis, basi fuscis, 9.

Long. 11 millim.; terebra 7 miliim,

Hab. Guatemata, Capetillo (Champion).

Antenne longer than the body, tapering towards the apex, stout; basal joint nearly

as long as the third and fourth joints (which are subequal) united, becoming gradually

thickened towards the apex, the latter transverse. Head covered with long white

hair; the face somewhat projecting in the middle; the clypeus not projecting at the

apex; the front depressed in the middle, the longitudinal furrow rather wide ; ocelli

but slightly raised. Abdomen longer than the head and thorax united, wider than the

mesothorax in the middle, becoming narrowed from the third segment. Petiole a little

368 HYMENOPTERA.

longer than broad, the surface a little roughened; the central part of nearly equal

width ; the inner furrow wide and deep, with a few transverse keels, its outer border

forming a stout keel; the outer furrow a little wider, and placed on a lower level than

the inner. Second segment with a shining area in the centre at the base; the area

broad at the base, broader than long, and prolonged to the apex as an acute keel; on

either side of this keel, bounded by the base of the segment, is a depression which at

the base bears some stout keels; the apex irregularly punctured. Suturiform articu-

lation wide and deep, occupying one third of the segment, and strongly longitudinally

striated, the striations being continued on both the lateral branches; the second

articulation is not half the width of the first, but is fully as deep. The segments are

punctured, the punctures rather shallow and not closely set together.

A larger and stouter species than J. pilosellus ; the antenne and terebra longer; the

antennal tubercles much more developed; the wings lighter in tint, and with the

-lower half of the stigma and the apical part of the nervures fuscous; the abdomen

broadly black at the apex; the inner furrow of the petiole much broader, and with a

few stout transverse keels, the outer furrow still broader; the puncturing on the

segments not so strong; and generally the abdomen not so pilose.

x 57. Iphiaulax pilosellus. (Tab. XV. fig. 7,2.)

“Niger, abdomine rufo; alis fuscis. 9°.

Long. 10 millim.; terebra 4°5 millim.

Hab. GuatemMata, San Gerdnimo (Champion).

Antenne as long as the thorax and abdomen united, stout, microscopically pilose,

tapering towards the apex; the joints clearly separated ; the basal joint nearly as long

as the third and fourth united, its apex produced on the underside. Head densely

covered with long white hair; the face and cheeks rugose; the front aciculated, laterally

depressed in the middle, the basal half of the furrow double the width of the apical

half. Abdomen one half longer than the thorax, covered (much more distinctly on the

basal half) with large punctures. Petiole with the central part of nearly equal width;

an obscure keel down the middle ; the inner furrow narrow and bordered by stout keels

on both sides, the outer furrow wider at the apex. Second segment with a stout keel, on

either side of which is an oblong depression; the lateral depression oblique, widened

at the apex. Suturiform articulation wide, the branches originating not far from the

sides; strongly longitudinally striated; the second and third furrows near the base of

the segment narrower and not so strongly striated.

58. Iphiaulax triangulator.

Long. 9°5 millim.; terebra 4 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

IPHTAULAX. . 869

Antenne stout, not longer than the thorax and abdomen united; basal joint pedun-

culated, a little longer than the third and fourth joints together, becoming gradually

dilated towards the apex. Head densely covered with white hair; face transverse, the

clypeus not projecting; eyes margined; the front depressed in the middle, its central

furrow wide; ocelli not raised; mandibles piceous at the apex. Abdomen a little

longer than the head and thorax together, wider than the latter. Petiole semiperpen-

dicular, the central part rough in texture and of nearly equal width; the inner and

outer furrows crenulated, the inner one wider than the outer. Second segment with a

somewhat triangular area; the area bounded by a wide coarsely striated depression,

which is united to the oblique lateral depression without becoming narrower. Suturiform

articulation of moderate width, its basal branch narrower than the apical one; the

second articulation narrow, and placed a little before the middle of the segment;

the third articulation a little narrower, placed near the base of the segment, and

smooth, not obscurely striated like the second. The abdomen is entirely red, except

the extreme apex. Wings large, dark fuscous; stigma and nervures fuscous; the

cubital nervure straight, scarcely bent at the base. The apical two joints of the palpi

are fuscous.

Most nearly allied to J. pilosellus, but narrower and not so pilose (especially on the

head and metathorax); the abdomen, from the third segment, bears no punctures, and

is much more shining.

The group of I. LACTEIFASCIATUS.

Second segment with a triangular area, the area a little longer than wide, the hollow on

either side of it crenulated ; the lateral furrow oblique, not striated; the base not

raised ; somewhat strongly punctured. Eyes not reaching to the base of the oral

region. Wings more or less marked with hyaline spots. Antenne longer than the

body, filiform. (Species 59 & 60.)

The area longer than broad, the wings not uniformly fuscous, and the much longer

and thinner antenne separate this section from J. molestus and its allies.

1 (2). Abdominal segments uniformly punctured ; the third and following

segments black at the apex, the others dull red; wings black at

the base, lacteous at the apex, the stigma entirely black ; thorax

but slightly hairy, the hairs black . se ee ew

2 (1). Abdominal segments not uniformly punctured; only the apical

segments black, the others bright red; wings black at the base,

the first cubital cellule subhyaline, the stigma ochraceous; thorax

lacteifasciatus.

BIOL. CENTR.-AMER., Hymenopt., February 1887. 3 BB

370 HYMENOPTERA.

59. Iphiaulax lacteifasciatus.

Niger, abdominis basi segmentisque 2° et 3° lateralibus ferrugineis ; alis fuliginosis, apice lacteis. 9.

Long. 8 millim.; terebra 4 millim.

Hab. Mexico (Bilimek).

Antenne longer than the body (being nearly 11 millim. in length), filiform, micro--

scopically pilose ; basal joint thick, semioblique at the apex, more than twice as long

as the second. Face finely rugose; front aciculated; vertex shining, impunctate;

eyes large, oval, reaching nearly to the apex of the clypeus. Thorax shining, impunc-.

‘tate, sparsely pilose, the metathorax with but few hairs; the hairs black and rather

long. Petiole semivertical, deeply excavated at the base, the excavation occupying

nearly half the total length; the central part rounded at the apex; it bears a few

punctures; the inner furrow wide, deep, with one or two indistinct transverse keels.

Second segment with the area small; the area longer than broad, pointed at both ends

(but much more acutely so at the apical end), and prolonged asa sharp keel nearly to the

apex, and having a broad, moderately deep, depression on either side ; the base raised,

shining, impunctate ; the lateral depression oblique, broad, deepest towards the apex,,

where there is a broad raised irregular keel. Suturiform articulation broad, stoutly

keeled ; the lateral branches not striated, short, the apical one much the widest; the

two central keels converging at the apex and united to another rather stout one, which

latter reaches a little beyond the middle of the segment. The first and second furrows are

moderately deep, the first twice the width of the second. The segments are raised at

the apex, depressed at the base, and rather strongly punctured (except at the apex,.

where the punctuation is weaker), the punctures somewhat large and clearly separated.

The abdomen is longer than the head and thorax united, and becomes gradually

narrower from the hinder part of the second segment to the apex. Wings rather long ;

the apical cloud extending from the apex of the stigma, and there is a darker oblique:

cloud in the first cubital cellule.

60. Iphiaulax divinator.

Niger, abdomine rufo ; alis fumatis, basi fusco-hyalinis. 9.

Long. 8 millim.; terebra 2°5 millim.

Hab. GuatTemata, San Gerénimo (Champion).

Antennee longer than the body, tapering towards the apex ; basal joint not much longer

than the second and third joints together, and of nearly equal width. Head densely

covered with long white hair; the face nearly transverse; the front depressed, but not

deeply so; ocelli raised; clypeus not projecting at the apex; tips of the mandibles.

piceous. Thorax pilose, very densely so on the metathorax ; the hair white. Abdomen

broader and not much longer than the thorax. Petiole semiperpendicular, dilated at

the apex ; the central part obtusely keeled towards the apex and obscurely punctured ;

IPHIAULAX. 371

‘the inner furrow sharply keeled on the outer side, wide, and crenulated, the outer furrow

scarcely so wide (except at the apex), but, if anything, deeper. Second segment with

a triangular area in the centre, the area surrounded by wide furrows, which are strongly

ribbed; the lateral depression wide and deep. Suturiform articulation wide and deep, |

‘the striations strong, the basal branch rather weak ; the second articulation as wide,

and, if anything, deeper, the third of much the same width and depth; the following

segments shining and impunctate, their apices raised ; the furrows finely longitudinally

‘striated. The puncturing is strongest on the third and fourth segments; on the others

it is rather weak and irregular. The apical segments are blackish and covered with

black hairs. Wings fuscous, subhyaline behind the transverse basal nervure, and also

in the first cubital nervure and immediately below it; the stigma black, the extreme

base ochraceous; the cubital nervure a little curved at the base; the recurrent nervure

‘scarcely interstitial. Apical joint of the palpi white.

The group of I. REPENTINUS.

' The area on the second segment usually closely punctured, its base rounded, its apex trian-

gular and running into a keel, the latter reaching nearly to the apex of the segment and

without a depression on either side of it; the apical part of the segment rugose or

rugosely reticulated ; the lateral furrow broad, oblique, shining, rugosely striated.

The entire abdomen closely, rugosely punctured ; the furrows broad, and strongly

longitudinally striated. Eyes large, reaching to below the level of the base of the

clypeus. (Species 61-63.)

This group chiefly differs from the preceding in the narrower more triangular area

on the second segment, and in the transverse furrows being deeper, wider, and

striolated.

1 (4). The area closely punctured ; thorax entirely, and the palpi, black.

2 (3). Petiole coarsely rugosely punctured; abdomen entirely red, not

much longer than the head and thorax united . . . . . . . repentinus.

3 (2). Petiole not coarsely punctured, and with two fovez near the apex ;

abdomen longer than the head and thorax united. . . . . . rixosus.

4 (1). The area shining, impunctate ; pronotum and the sides of the meso-

notum red, the palpi white . . 2... 2... ww eee Oegregius.

| AN 61. Iphiaulax repentinus.

Niger, abdomine rufo; terebra quam corpus breviore; alis fumato-hyalinis, apice fuscis. 9.

Long. 8 millim.; terebra 5 millim.

Hab. Guatemata, San Gerénimo (Champion).

Antenne microscopically pilose, tapering towards the apex; the basal joint as long

.as the second and third joints united. Head covered with a silvery-white pile; face

, 3 BB 2

372 HYMENOPTERA.

finely punctured, the punctures hidden by the pile; sides of the front aciculated, the

centre depressed and with an obscure furrow. Abdomen not much longer than the

head and thorax united; coarsely punctured throughout. Petiole with the central

part widened towards the apex; inner furrow wide, the outer one not half its width.

Second segment with a sharp keel running down the centre, the keel issuing from a

4-angled area at the base; the lateral depression sharply oblique, wide and deep, and

not reaching to the middle. Suturiform articulation wide, strongly longitudinally

striated ; the second articulation scarcely so wide, but deeper, the third articulation

narrower and scarcely as deep.

62. Iphiaulax rixosus.

Niger, abdominis segmentis 1°-6™ ferrugineis ; alis fuscis. ¢.

Long. 10 millim.; terebra 8 millim.

Hab. Nicaracva, Chontales (Janson).

Antenne stout, microscopically pilose; basal joint short, thick, of equal width.

Face coarsely punctured, projecting in front of the eyes, covered with short white hair ;

front a little depressed in the middle, and without a furrow in the centre. Abdomen

nearly twice the length of the thorax, becoming gradually wider towards the middle,

and thence to the apex narrowed; coarsely punctured all over. Petiole with the

central part broad, and not much enlarged towards the apex; the inner furrow wide,

shallow, and finely and closely punctured, the outer furrow a little narrower. Second

segment with a triangular area in the centre at the base, the area continued as a keel

nearly to the apex ; the lateral depression wide, deep, oblique. Suturiform articulation

wide, curved, the branches issuing not far from the side; finely punctured ; the second

and third articulations of nearly equal width.

o< 63. Iphiaulax egregius.

Niger, linea pronoti, lineis 2 mesonoti, trochanteribus ex parte, geniculis abdominisque segmentis 1°-5™ rufo-

ferrugineis ; alis fumatis, stigmate fusco. <.

Long. 8 millim.

Hab. Mexico, Presidio (Forrer).

Antenne a little longer than the body, densely covered with a whitish pile; the

scape more shining and more sparsely clothed with hair; its basal joint as long as the

third and fourth joints together, not produced at the apex, and of nearly equal width

throughout. Head densely covered with long white stiff hair; the face apparently

punctured ; front and vertex shining, impunctate, the former depressed in the middle,

but not deeply so. Thorax thickly covered (especially on the sides) with long white

hair; shining, impunctate. Abdomen longer than the head and thorax together.

Petiole with the apical part of the central division rounded, rugose; the inner furrow

IPHTAULAX. 373

wide, especially at the apex; the keel stout, acute. Second segment with the area

broader than long; the area smooth and shining, acute at the apex, the keel reaching

nearly to the suturiform articulation; strongly rugosely (more strongly than the third

and fourth segments) punctured. Suturiform articulation wide, deep, coarsely striated ;

the furrow on the third and fourth segments not quite so wide and deep, rugose. The

apical segments not strongly punctured; the sixth segment largely red laterally.

The group of I. SONORENSIS.

The abdominal segments in the middle or at the apex broadly depressed and striated,

the rest shining and impunctate ; the area on the second segment broader than

long, shining, impunctate ; the lateral area oblique, very wide, shining, indistinctly

striated. Abdomen longer than the head and thorax (nearly double the length of

the thorax) united ; becoming gradually broader to the fourth segment, but not

broader than the thorax; vermilion-red, the edge of the pronotum, and the mesonotum

in front, red. (Species 64.)

This group is readily distinguished by the very wide and deep striolated furrows on

the abdomen, the latter longer than the head and thorax united; and also by the long

and narrow body. It contains a single species.

tr Iphiaulax sonorensis. (Tab. XV. fig. 4, 2.)

Niger, linea pronoti, macula ad basin mesonoti abdomineque rufis ; alis fuliginosis. 9.

Long. 9 millim. ; terebra 7 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne as long as the body, almost glabrous; third joint distinctly longer than

the fourth; basal joint not much longer than the third, thick, oblique at the apex.

Head below the antennz densely covered with long white hair; the face nearly trans-

verse, finely punctured; the clypeus very slightly projecting at the apex; the front

scarcely depressed, the central furrow narrow. Pleure and sides covered with long

white hair. Abdomen much longer than the head and thorax together, towards the

middle a little wider than the mesothorax. Petiole raised in the centre at the apex, the

base deeply and broadly depressed ; the central part keeled in the middle; the inner

furrow moderately wide and deep and curved, the outer furrow narrower. Second

segment with a keel running down the centre to a little beyond the middle, the keel

starting from a somewhat triangular area; on either side of the keel deeply depressed

(especially near the side) and irregularly and strongly striated. Suturiform articulation

very wide, occupying more than half the segment; its centre broadly raised in the

middle ; the apical branch much wider than the basal one and finely striated.

374 HYMENOPTERA.

The group of I. avaRvus.

The abdomen closely but not very coarsely punctured ; broader than the thorax, not

tapering much towards the apex; shorter than the head and thorax united.

Ovipositor shorter, or at least not much longer than the abdomen. Legs black;

head and thorax more or less black. (Species 65-68.)

The absence of a keel or area on the second segment distinguishes this group.

1 (2). Head and thorax entirely black, except the orbits, the edge of the

pronotum narrowly, and two lines on the mesonotum, which are

red. . we we ee ee ee we ee US.

2 (1). Head and thorax for the greater part rufous.

3 (4). Front striated ; stigma and nervures fuscous ; thorax on the under-

side, and the metanotum in part, black. . . . . 1...) .) 0mexicanus.

4, (3). Front not striated ; thorax beneath for the greater part, or entirely,

rufous ; stigma black ; head mostly rufous.

5 (6). Hind coxe entirely rufous ; mesosternum without black . . . . Jbellicosus.

6 (5). Hind coxe black, except at the extreme base ; mesosternum broadly

lmed with black . 2. 2... 1 we. ee eee. jtucundus.

{ 65. Iphiaulax avarus. (Tab. XV. fig. 11,9.)

ger, linea pronoti, lineis 2 mesonoti orbitisque oculorum sordide rufis; abdomine flavo-testaceo; lis

fumatis, stigmate nigro. 9.

Long. 6 millim.; terebra 1°5 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne moderately stout, covered with microscopic pile; the third joint distinctly

longer than the fourth; the basal joint nearly as long as the third, oblique at the

apex. Face densely covered with long glistening white hair, punctured; the clypeus

not projecting at the apex, and not separated by a furrow; front depressed in the

middle ; the latter, as well as the vertex, aciculated, opaque. Thorax shining, impunc-

tate; the breast, pleure, and metanotum densely covered with long white haiy.

Petiole semiperpendicular, excavated at the base ; the sides separated from the central

part by deep and wide furrows. The abdomen not much longer than the thorax,

ovate, the segments longitudinally striated. Suturiform articulation wide, deep, also

longitudinally striated.

66. Iphiaulax mexicanus.

Niger, orbitis, linea pronoti, lineis 2 mesonoti, striga metanoti abdomineque flavo-testaceis; alis fusco-

hyalinis, stigmate fusco. ¢.

Long. 8 millim.; terebra 2 millim.

Hab. Mzxico, Northern Sonora (Morrison).

TPHIAULAX. 8375

Antenne as long as the body, stout, almost glabrous. Head, thorax, and palpi

covered with rather long glistening white hair; the head obscurely punctured; the

thorax impunctate, shining. Mandibles testaceous, the tips blackish. Abdomen

_ closely punctured all over, covered with short stiff pile. Petiole with the central part

somewhat triangular and truncated (not narrowed) at the apex; the base sharply

depressed ; the inner furrow narrow, shallow, placed at some distance from the edge.

Second segment with an obscure depression on either side; the suturiform articulation

wide, not much bent, bifurcating near the edge. The furrow on the third segment as

wide as the suturiform articulation, that on the fourth narrower. Abdomen scarcely so

long as the head and thorax united; broad, becoming gradually narrower towards the

apex, the latter blunt. Apical nervures of the wings fuscous; the stigma testaceous on

the lower side ; the recurrent nervure interstitial.

67. Iphiaulax jucundus. (Tab. XV. fig. 10, 9.)

Flavo-testaceus, antennis, vertice, maculis 3 mesonoti, mesosterno pedibusque nigris; alis fumatis. @.

Long. 6 millim. ; terebra 15 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne nearly as long as the body, moderately stout, microscopically pilose ; first

joint three times the length of the second ; third joint a little longer than the fourth.

Palpi black, covered with white hair; tips of the mandibles black. Face covered with

long white hair, finely rugose, a transverse black mark above the centre; front and

vertex shining, impunctate ; the front above the antenne depressed, the depression

distinctly margined at the top, and with a furrow running down its centre, the two

lateral spaces rounded on either side of the furrow. Petiole strongly punctured, the

punctures above large and clearly separated ; the inner furrow very wide and shallow,

the outer furrow narrower and deeper and ending a little in front of the middle, where

the petiole itself commences to widen. Abdomen coarsely punctured, much wider

than the thorax, rounded at the apex ; an oblique wide depression on either side of the

second segment at the base, the part immediately behind the depression shining, im-

punctate; first transverse furrow wide, its basal branch narrow, shallow, the apical

branch the width of the furrow itself; second furrow narrow and, like the first,

longitudinally striated. The upper half of the head (except the orbits narrowly), the

prosternum, a mark on each side of the mesosternum, the mesonotum in front, the legs

(except at the joints), and the bases of the hind coxe, are black.

Tt 68. Iphiaulax bellicosus, (Tab. XV. fig. 13, ¢ .)

- eus, antennis, vertice pedibusque nigris, coxis posticis basique femorum rufis; alis fumatis, stig-

Flavo-testaceus, ’ Pp q gris, Pp

mate nigro. &.

Long. 8°5 millim. ; terebra fere 2 millim.

Hab. Mexico, Northern Sonora (Morrison).

376 HYMENOPTERA.

Very like the preceding species, but longer and broader; the antenne stouter; the

face more strongly punctured ; the front above the antenne not so deeply depressed,

the depression not so distinctly margined at the top, nor so clearly divided into two by

the furrow; the metanotum shorter, and with a much steeper slope. The petiole is

broader compared with its length, more perpendicular, and not so much on a line with

the rest of the abdomen; its centre more strongly punctured; the inner furrow

narrower and deeper, the outer furrow longer and continued to the base (not originating

from the apex as in [. jucundus, but a little from the middle). The abdomen longer

compared with the thorax, but otherwise as in J. jucundus, except that the punctuation

is stronger. The four anterior legs are black, their joints red; the hinder pair have

the apices of the femora, the tibie, and the tarsi, black, the rest red. The vertex is

broadly obscured with black, the black running into the red ; the mesonotum in front

is obscure black.

iii. Abdomen strongly striated. (Species 69.)

The group of I. MENDICUS.

Abdomen closely and regularly longitudinally striated, the second segment more irre-

gularly and more strongly so; the petiole strongly reticulated ; the area shining,

impunctate, broader than long; the lateral depression shallow, strongly striated ; the

suturiform articulation shallow, striated, the striw continuous, the lateral branches

not clearly defined ; the segments shining, and not striated at their apices, the

latter each higher than the base of the succeeding segment. Head and legs black ;

the body and thorax obscure red, greatly suffused with black. (Species 69.)

69. Iphiaulax mendicus, (Tab. XV. fig. 8, 2.)

Capite, antennis, palpis pedibusque nigris, thorace ferrugineo, abdomine fusco-rufo, orbitis oculorum testa-

ceis; alis fuliginosis. 9.

Long. 8 millim. ; terebra 3 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne microscopically pilose, the joints not clearly separated ; basal joint thick,

not much more than double the length of the second. Head shining, impunctate,

covered sparsely with rather long hair; black above, whitish in the face ;* mandibles

testaceous, blackish at the tips. Mesonotal lobes well developed; metanotum short,

with a gradual oblique slope to the apex, the sides covered with long white hair.

Petiole with the central part rugose and sharply rounded at the apex, the latter

impunctate; the inner furrow broad, deep, transversely striolated. The area on the

second segment and the sides behind the oblique depression shining, impunctate. The

second, third, and fourth segments, except at their apices, strongly longitudinally

striolated; the apical segment black. The wings have a violet tinge; the recurrent

IPHIAULAX. 377

nervure is interstitial; the second cubital cellule is nearly as long as the third. The

legs are rather bare.

The following species differs from [phiaulax and Bracon in the form of the body, and

may perhaps form the type of anew genus. ‘The thorax is long and flat above. The meta-

thorax is especially long, and has a rounded, comparatively flat slope, and wide and deep

lateral furrows ; on the inner side of the furrow is a row of large fovez, and a furrow

runs down the centre of the metanotum. The abdomen is shorter than the thorax,

and is sessile, the petiole being broad and scarcely narrower at the base. The suture

between the petiole and the second segment is wide, deep, and transverse. The suturi-

form articulation is slightly curved; its basal branch straight, sharply oblique, and

joined to the furrow at the base of the segment. The lateral depression on the second

segment is absent. The last ventral segment is deeply incised. The legs are stout ;

the hind femora thickened; the tarsi a little shorter than the tibiae; the metatarsus

not much longer than the second joint. The wings are as in Bracon.

_*70. Iphiaulax (?) multicarinatus. (Tab. XV. fig. 12, 2.)

Niger, abdominis segmentis 1°-5™ rufis ; alis fuliginosis. @.

Long. 12 millim. ; terebra 5 millim.

Hab. Nicaragua, Chontales (Janson).

Antenne stout, tapering towards the apex, longer than the body; scarcely micro-

scopically pilose. Face coarsely, rugosely punctured, and with an irregular hollow in

the centre; the rest of the head smooth, shining. ‘Thorax smooth, shining, the lateral

suture canaliculated ; metathorax at the lateral sutures marked with some large, round,

shallow punctures; metanotum with two fine keels going down the centre, and at

the apex bearing three depressions, the central depression shallow and somewhat

triangular, the lateral ones larger, deeper, and oblong. Petiole broad, the central part

raised and bordered by a rather wide furrow; longitudinally striated, except at the

apex ; separated from the second segment by a narrow and somewhat deep furrow, in

front of which on either side is another oblique narrow furrow almost uniting it with

the narrow and shallow suturiform articulation. In the centre of the second segment

are two rather long keels, bordered by two shorter ones on either side. The remainder

of the abdomen is smooth and shining. The recurrent nervure is interstitial; the

second cellule is double the length of the radial nervure in front of the first transverse

cubital nervure.

The described species of this section of Braconide from our region are only three in

number; I prefer to place them here, as they may belong either to Bracon (sensu

stricto) or to [phiaulax. |

BIOL. CENTR.-AMER., Hymenopt., March 1887. 3 cc

378 . HYMENOPTERA.

Bracon (?) vestitor.

Bracon vestitor, Say, Boston Journ. Nat. Hist. i. p. 254* (g¢) ; Complete Writings, i. p. 706.

Hab. Mexico !.

The following is the description :—

“ 3. Body with very numerous, minute, prostrate hairs; head blackish, with dilated

dull fulvous orbits; before the antennee more prominent than above, and convex ;

antennee dull yellowish ; thorax dull fulvous, with three dilated black lines, of which

the middle one is abbreviated before the middle; metathorax dusky; wings hyaline;

tergum yellowish, somewhat polished towards the tip; lateral edge dusky ; first seg-

ment at tip bisinuate or three-angled ; feet paler; thighs a little dusky.

“Length three-twentieths of an inch.”

Bracon (?) niger.

Bracon niger, Brullé, Hist. Nat. Ins. Hymén. iv. p. 895°.

“Niger; alarum posteriorum basi et anteriorum lineola angulata hyalinis; abdomine punctato, incisuris

striatis. 9.

“ Long. 0°:012 ; terebra 0:009.

“ Hab. Mexico (Ghiesbreght 1).

“‘Tl est noir, avec le bord latéral des premiers segments de abdomen d’un chatain

foncé. Les ailes sont noires; le base de celles de la seconde paire est transparente,

ainsi qu'une petite ligne anguleuse au dessous du stigma des ailes de la premiére paire.

‘“‘ Le face est finement ponctuée et pourvue d’une fossette profonde qui s’étend sur

presque toute sa longueur. Le lobe moyen du mésothorax est un peu saillant; le

métathorax est velu et présente en arriére une légére dépression sillonnée. Le lobe

médian du premier segment de l’abdomen est plus ou moins ponctué en arriére et

marqué de deux petites fossetes; il est séparé des bourrelets latéraux, qui sont com-

primés, par un large sillon crénelé ; une fossette profunde précéde ce lobe médian.

Le deuxiéme segment est rugueux et presque strié en avant, fortement ponctué en

arriére, surmonté d’une caréne longitudinale qu’accompagnent deux fossettes profundes

et rides irreguliérement ; les bourrelets latéraux sont ponctués et rides en long. Les

segments 3—5 sont fortement ponctués ; les tubercules latéraux du troisitme segment sont

ponctués et déformés en arriére par plusieurs fossettes. Le sillon d’intersection des

segments 2 et 3 est trés-large et fortement strié; le sillon transversal des segments

4 et 6 est distinctement strié. L’abdomen est en ovale élargi. Les valves de la

tariére sont légérement élargies 4 l’extrémité.”

Bracon (?) fuscipennis.

Bracon fuscipennis, Brullé, Hist. Nat. Ins. Hymén. iv. p. 3961.

“Niger ; thoracis dorsi anteriori parte abdomineque rubris, alis omnio fuscis ; abdominis segmento 2° carinato,

incisuris levibus. @.

“Long. 0:009; terebra 0-009.

BRACON.—SPATHIUS. 379

“ Hab. Mexico (Mme. Sallé *).

“Jl est noir, avec ’abdomen rouge, ainsi que le dos du mésothorax et le milieu du

métathorax. Le mésothorax n’a de rouges que ses trois lobes dorsaux, encore les deux

latéraux sont ils couverts, dans leur derniére moitié, d’une large bande noire, plus

étroite en avant. Ce qu il y a de rouge au métathorax, c’est une caréne plus large a la

base qu’a l’extrémité. Les ailes sont entiérement brunes.

“‘ La face est finement ponctuée et pourvue d’une fossette entre les antennes. Le

lobe moyen du mésothorax est un peu saillant, large et marqué de deux légéres sillons.

Le métathorax est ponctué et velu; sa caréne seule est lissé. Le lobe médian du

premier segment de l’abdomen est ponctué et séparé des bourrelets latéraux par un

large sillon qui parait lissé en arriére et légérement ponctué en avant, une fossette ou

un gros point enfoncé se voit en avant de ce lobe. Le deuxiéme segment présente

une caréne saillante et étroit, dont la base est large et trés courte; une fossete arquée

sétend le long de la caréne et passe contre les bourrelets latéraux, en contournant la

base du segment. Les segments 3-5 offrent au milieu une petite saillie ou rudiment

de caréne ; les sillons de ces trois segments sont tout-a-fait lissés. L’abdomen est en

ovale élargi.”

Obs. The eyes reaching to the base of the clypeus and the white palpi (as in

Iphiaulax infirmus) are probably sexual characters. I have not, however, both sexes

of a species in which these two characters are found in the male; they are certainly

not always found in this sex.

Subfam. SPATHITN AL.

SPATHIUS.

Spathius, Nees, Act. Acad. Leop.-Carol. Nat. Cur. 1818, p. 301.

Euspathius, Forster, Verh. Ver. Rhein]. xix. p. 236.

A genus of wide range. The comparatively few known species are parasites on

wood-boring beetles.

i. Transverse humeral nervure not received in the anterior humeral cellule.

a. Vertex shining, not striated transversely ; transverse humeral nervure not interstitial ;

second cubital cellule on the lower side nearly as long as the third; metathorax

reticulated ; petiole constricted in the middle, about one third of the total length

of the abdomen.

1. Spathius tinctipennis. (Tab. XV. fig. 14, 9.)

Nigro-fuscus, scapo antennarum pedibusque testaceis, apice antennarum albo, femoribus coxisque posteriori-

bus fuscis ; metathorace reticulato; alis fere fuscis, nervis testaceis, stigmate fusco cum basi pallida, 9°.

Long. fere 5 millim.; terebra 1:5 millim.

8 cc 2

880 HYMENOPTERA.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

Antenne 26-jointed ; the scape testaceous, the apical seven joints white, the rest

blackish ; covered with a close microscopic pile. Head shining ; impunctate, except the

face which is closely, but not coarsely or strongly, punctured ; bearing some scattered

hairs; the face testaceous, the rest black with a faint fuscous tint ; mandibles tes-

taceous; palpi long, white. Thorax black; the prothorax in front suffused with

fuscous; mesonotum aciculated; prothorax closely punctured; mesopleure obliquely

striated in front, the rest shining, impunctate; metathorax coarsely longitudinally

punctured, and with six longitudinal keels down the metanotum, the outermost keel but

one bearing, at the top and bottom of the apical slope, two teeth, of which the apical one

is the longest and sharpest. Abdomen not much longer than the head and thorax

together; petiole curved, a little more than half the length of the rest of the abdomen,

closely punctured, and with two stout keels above and a keel also on either side, the

side below the keel being hollowed; the other segments shining, impunctate; the

ventral and apical segments suffused with testaceous. Ovipositor scarcely so long as

the abdomen ; the sheaths pilose, obscure testaceous, black at the apex; the terebra

ferruginous, the extreme apex black. Wings not much longer than the head and

thorax united; light fuscous, darker at the base, the nervures at the base and the

stigma fuscous, the nervures beyond the stigma pallid; the transverse humeral nervure

received distinctly in front of the transverse basal nervure; the second cubital cellule

on the lower side nearly as long as the third. The four anterior legs testaceous; the

middle femora suffused with fuscous ; the hind coxe, except at the apex, and the greater

part of the hind femora, blackish; the hind tibie and tarsi testaceous ; the hind coxe

finely punctured.

Differs from the other known Central-American species in the vertex not being striated ;

the antenne shorter; the second cubital cellule longer; and the metathorax

reticulated.

b. Vertex striated ; transverse humeral nervure interstitial ; second cubital cellule

much shorter than the third ; metathorax aciculated.

1 (2). Second segment and the base of the third not striolated, the metanotum

with three arez, the ovipositor shorter than the abdomen, the hind

femora and tibiz testaceous, the wings hyaline; petiole broad, shorter

than the hind femora, dilated gradually towards the apex. . . . . ornaticornis.

2 (1). Second segment and the base of the third longitudinally striolated, the

metanotum without arez, the ovipositor longer than the body, the hind

femora and tibiz black, the wings fuscous; petiole longer than the

hind femora, narrow. . . . . . . 2 6 2 we ew ew ese fuscipes.

SPATHIUS. 381

2. Spathius ornaticornis. (Tab. XV. fig. 18, ¢.)

Niger, ore, scapo antennarum, striga mesonoti pedibusque testaceis, apice antennarum, palpis coxisque

anterioribus albis ; alis fere hyalinis, nervis stigmateque fuscis. 9°.

Long 5 millim.; terebra fere 2 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

Antenne longer than the body, filiform, microscopically pilose; a broad white band

towards the apex, the apical two joints being themselves fuscous, the scape for the

greater part testaceous. Head of the usual form, fuscous-black, the apex blacker, the

orbits and mouth dark testaceous; palpi long, white; mandibles testaceous, darker at

the apex. Pro- and mesonotum shining, impunctate; the middle lobe of the mesonotum

broadly bordered with testaceous; the pronotum striated behind; mesopleure opaque,

aciculate ; metathorax opaque, strongly alutaceous, the apex of the metanotum scarcely

so, and shining; metanotum with a central and two lateral keels, and three are (the

central the longest arid all rounded at the base) on the apical half. Abdomen a little

longer than the head and thorax united; petiole finely longitudinally striated; the

other segments shining, impunctate ; the second segment more or less, and the apical

segments entirely, dark testaceous; ventral surface brownish. Anterior legs white,

except the tarsi; the middle coxe, trochanters, and the base of the femora, and the hind

trochanters also, white ; the rest of the legs fulvo-testaceous, the femora and tarsi the

darkest. Wings hyaline, the nervures testaceous ; stigma fuscous.

/ X3. Spathius fuscipes.

Niger, antennis, capite, geniculis, tibiis tarsisque anterioribus testaceis, palpis, apice antennarum coxisque

antivis albis ; alis fere fumatis, stigmate fusco cum basi alba. 9.

Long. 4°5 millim.; terebra 5 millim.

Hab. Panama, Bugaba (Champion).

Antenne much longer than the body, the basal half fuscous, the apical third white ;

microscopically pilose. Head as in S. ornaticornis, but the face more strongly shagreened

and generally more suffused with testaceous. Prothorax shining, the pronotum striated

behind; mesonotum aciculate, entirely black; mesopleure closely longitudinally

aciculate; metathorax with two lateral keels (the central keel obsolete), finely

rugose throughout, and without aree. Petiole long, nearly as long as the thorax,

narrow, closely longitudinally striolated, and with two keels running down on either

side above; the second segment and the base of the third closely longitudinally strio-

lated, opaque; the rest of the abdomen shining, the apex testaceous. The four

anterior cox and trochanters white, the hind trochanters obscure white; the knees and

the four anterior tibize and tarsi dull testaceous. Wings fuscous, much darker towards

the apex.

A much more slender insect than S. ornaticornis, and easily known from it by the

much longer and thinner petiole.

382 HYMENOPTERA.

ii. Transverse humeral nervure received before the transverse basal nervure in the

anterior humeral cellule; head strongly transversely striolated.

J 4. Spathius striatifrons.

Niger, palpis, apice antennarum pedibusque albidis, scapo antennarum, ore tarsisque posticis testaceis, coxis

posticis (apice excepto) apiceque femorum posticorum nigris ; alis fuscis, stigmate fusco cum basi et apice

pallidis. 9.

Long. 5°5 millim. ; terebra 1-5 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Antenne longer than the body, microscopically pilose, the scape on the underside

and the apex broadly white. Head black, the orbits narrowly and the mouth tes-

taceous; palpi white; face shining, transversely striated; vertex strongly transversely

striated ; front somewhat depressed in the middle, punctured. Mesonotum aciculate,

opaque ; scutellum shining, impunctate; pronotum strongly striolated; mesopleure

shining, the fore part aciculate, the top longitudinally striolated ; metathorax strongly

longitudinally striolated throughout, without aree, but with two lateral keels, the

inner keel (where the slope begins and ends) bearing a tubercle. Petiole narrow,

curved, finely longitudinally striated, and with a fine keel on either side; the rest of

the abdomen shining, impunctate, the apex testaceous.

The position of the transverse humeral nervure forms a ready means of separating

this from the preceding species. 8S. striatifrons also differs in the petiole being pro-

duced on either side not far from the base.

Subfam. DORYCTINA.

Doryctides, Forster, Verh. Ver. Rheinl. xix. p. 227.

DORYCTES.

Doryctes, Haliday, Ent. Mag. iv. p. 48 (1836).

The two species included here certainly belong to the “ Doryctides” of Férster, but

they do not quite agree with Doryctes as defined by him, inasmuch as the hind coxe

can scarcely be said to be “ angularly produced in front ;” while they differ from Celoides,

Wesm., in the suturiform articulation being obsolete, and in the transverse humeral

nervure not being interstitial.

1. Doryctes strongylogaster. (Tab. XV. fig. 21, ¢.)

Nitidus, rufus ; capite, antennis, prothorace, abdominis segmentis 4°-7™ pedibusque, nigris ; alis fuscis. 9.

Long. 13 millim. ; terebra 11 millim.

Hab. Panama, Bugaba (Champion). -

Antenne fully one half longer than the body, filiform, sparsely microscopically pilose ;

DORYCTES. 383

the scape covered with a long pile, obscurely striated ; third joint elongate, longer than

the fourth ; the other joints so closely amalgamated as to be indistinguishable. Head

with the face below the antenne coarsely rugose ; vertex shining, impunctate, depressed

behind; a broad furrow (narrowed at either end) above the antenne, but not reaching

to the top of the depression; face covered with long fuscous-black hair; eyes oval,

margined, the head considerably developed behind them, but not projecting ; ocelli

surrounded by a furrow; mandibles piceous at the base; palpi black, long, pilose.

Thorax shining ; metathorax obscurely shagreened, showing a gradual slope to the

apex; mesonotum with the middle lobe clearly separated from, and raised a little

above and produced considerably in front of, the lateral lobe, and much broader in

front than behind; the mosonotal sutures distinct, curved in front, and obscurely

shagreened ; the oblique furrow on the mesopleure wide and moderately deep; a much

shorter, striated furrow on the mesosternum anda long and very narrow one on the

metapleure, a wider furrow running down the metanotum. Abdomen scarcely one

half longer and not much broader than the thorax; petiole flattish above, except at the

apex, somewhat strongly longitudinally striated, with a narrow aciculated furrow along

either side above, and a lateral (slightly wider) perpendicular furrow lower down, smooth

at the apex, aciculate at the base; the second segment longitudinally striated on either

side at the base, with a narrow transverse furrow, the centre aciculated. Terebra stout,

the sheaths pilose. Tibi and tarsi densely pilose, the coxee and trochanters sparsely

clothed with long black hair. Wings long and narrow, the apical third paler; an

oblique narrow hyaline cloud in the first cubital cellule; the recurrent nervure almost

interstitial ; the second cubital cellule short, scarcely twice the length of the third.

2. Doryctes pertinax.

Rufus, antennis, capite, prothorace, abdominis segmentis 7° et 8° pedibusque nigris. 9.

Long. 11 millim.; terebra 9 millim.

Hab. Panama, Bugaba (Champion).

Antenne thin, filiform, longer than the body, densely pilose ; third joint a little longer

than the fourth. Head rugose in front, opaque; vertex shining, impunctate ; consider-

ably depressed above the antenne, the depression transversely striated ; the ocelli

surrounded by an oblong furrow, which is incomplete behind; the central furrow

wide, shining, moderately deep. Thorax shining, impunctate; metanotum obscurely

shagreened, especially at the sides, with a narrow keel running down the middle, the

keel bifurcating at the centre and there forming an elongated area. Petiole shining,

impunctate; the sides depressed at the base, the raised part having a keel along the

sides; the furrow narrow and along the extreme edge. The other segments also

smooth, shining, impunctate, without furrows or depressions.

Differs from D. strongylogaster in being smaller; the antenne shorter, much more

densely pilose; the frontal furrow longer, and reaching nearly to the ocelli; the

384 HYMENOPTERA.

abdomen shorter and having only the apical two segments black; the petiole entirely

smooth, not so flat on the top, and without any distinct furrow along the side; the

second segment not striated, only obscurely transversely wrinkled; and the second

cubital cellule longer, and considerably more than twice the length of the third.

ODONTOBRACON.

Head cubital, large, excavated above the antenne ; eyes oblong, not reaching nearly to the base of the clypeus.

Antenne filiform, multiarticulate ; first joint of the flagellum a little longer than the second. Thorax

elongate, stout, contracted in front, broad and transverse behind ; mesonotal sutures deep, or moderately

deep; the transverse depression at the base of the scutellum crenulated ; metathorax large, of nearly

equal width, usually coarsely rugose, ending laterally in a stout tubercle. Abdomen broadly sessile,

broadest in the middle, usually a little longer than the thorax; stoutly longitudinally striolated at the

base; suturiform articulation deep, and usually broad, nearly transverse or curved, generally joined to

the deep furrow at the base of the second segment by an oblique or longitudinal furrow ; apical ven-

tral segment ploughshare-shaped. Ovipositor shorter or longer than the abdomen. Legs rather short,

stout; femora short, thick; middle tarsi shorter than the tibiz, and also shorter than the anterior or

hind tarsi ; basal joint of the tarsi not much longer than the second joint ; hind coxe thick, ending behind

in a long, stout, curved tooth. Wings long, narrow, with three cubital cellules ; the second cellule small,

not more than one fourth of the length of the third cellule, variable in shape; the second humeral cellule

shorter than the first discoidal cellule.

The toothed coxe sufficiently distinguish Odontobracon from the other genera of

“ Doryctine.” The occiput, moreover, is not very clearly margined.

1 (2). Prothorax only black; mesonotal sutures crenulate ; metathorax reticu-

lated throughout ; second cubital cellule scarcely longer than broad . nigriceps.

2 (1). Mesothorax black; metanotal sutures and the base of the metanotum

smooth ; second cubital cellule longer than broad.

3 (4). Metanotum red; the recurrent nervure interstitial

4, (3). Metanotum black ; the recurrent nervure not interstitial .

ee ew he Crassiventris.

oe ee MONtANUS.

~; 1. Odontobracon montanus. (Tab. XV. fig. 17, 2.)

Niger, abdomine rufo ; alis fumatis. 9°.

Long. 13 millim. ; terebra 6°5 millim.

Hab. Costa Rica, Irazu 6000 to 7000 feet (Rogers).

Antenne longer than the body, tapering perceptibly towards the apex; closely

covered with a depressed pile, which is somewhat long at the base of the flagellum.

Face coarsely rugosely punctured ; a small, shining, projecting part below the antenne ;

the rest of the head shining, smooth; two rather long depressions above the antenne,

the depressions separated by a raised part which bears two keels; trophi black; the

palpi pilose. Pro-and mesothorax shining, smooth, the sutures broadly crenulated ; the

oblique depression on the mesopleure broad. Metanotum, except at the base, covered

with large, shallow, widely separated, roundish punctures; the apex semivertical, appear-

ing excavated in the middle owing to the sides projecting in large tubercles; the inner

side of the tubercles smooth and shining, the central apical portion coarsely punctured.

ODONTOBRACON. 385

Petiole depressed behind, the depression margined round the apex; rather strongly

longitudinally striated ; an oblique, rather broad, but not deep, furrow on either side at

the apex. The separation of the petiole from the second segment marked by a broad

and deep furrow, from either side of which branches off a wider oblique furrow, the latter

nearly uniting the deeper furrow with the large, broad, suturiform articulation; the

central part of the second segment is thus surrounded by furrows, and is longitudinally

striolated, except at the apex; the suturiform articulation is similarly striolated, and a

little beyond it is a shallow, narrow, transverse furrow, the furrow being more finely

striated. The apex of the abdomen is rather sharply pointed and bent downwards.

Legs stout; the coxe and femora sparsely clothed with hair; the tibie and tarsi much

more densely covered with long, stiff hairs; the tooth on the hind coxe long and

curved. The recurrent nervure is scarcely interstitial; the first transverse cubital

nervure is very oblique, the second straight; the second cubital cellule is, on the lower

side, nearly twice the length of the second recurrent nervure.

V 2. Odontobracon crassiventris. (Tab. XV. fig. 15, 2.)

Niger, metanoto abdomineque rufis; alis fumatis, basi fere hyalinis. 9°.

Long. 15 millim. ; terebra 8 millim.

Hab. Guatemaa, San Gerénimo (Champion).

Antenne not much longer than the body, covered with a depressed pile. Face

rugosely punctured, a shining, smooth, elongated, narrow space in the centre; front

broadly depressed, a broad keel in the middle. Pro- and mesothorax smooth, shining,

the sutures wide and deep; the pronotum deeply excavated, the excavation coarsely

crenulated; middle lobe of the mesonotum largely developed, especially in front ; scu-

tellum with the depression at the base, and its sides, crenulated. Metanotum with the

base shining, impunctate, the rest covered with large, widely separated punctures ; at the

centre of the base is a stout keel, which reaches to the middle ; the apex has an oblique

slope; the metapleurz are not nearly so strongly punctured as the metanotum; the

lateral tubercles are longer than broad. Petiole strongly longitudinally striolated ; the

base excavated, margined laterally. The second segment and suturiform articulation

as in O. montanus; but the central part is more rounded at the apex (not being so

transverse), and the striation is continued to the narrow, shallow furrow ; a little beyond

this latter is a similar curved, shallow, striated furrow, which at the sides bends back-

wards, so that the two furrows become nearly joined. There is an indistinct transverse

narrow striated band on the fifth and sixth segments.

\/ i

\--T 3. Odontobracon nigriceps. (Tab. XV. fig. 16, 2.)

Rufus, antennis, capite pedibusque nigris; alis fumatis. 9.

Long. 11 millim.; terebra 2 millim.

Hab. Guatemata, San Gerénimo (Champion).

BIOL. CENTR.-AMER., Hymenopt., March 1887. 3 pp

386 HYMENOPTERA.

Antenne covered with rather long, depressed pile, the base with long hairs. Face

rugosely reticulated; eyes distinctly margined, a depression over each. Pro- and meso-

thorax smooth, shining, the sutures crenulated, the pronotum depressed and bearing

some stout keels; mesopleurze below the fore wings coarsely irregularly striolated.

. Metathorax coarsely rugosely punctured, the centre reticulated; the lateral tubercles

large, broad. Petiole and second segment strongly longitudinally striolated ; the sepa-

ration between them deep, but not very broad ; the suturiform articulation comparatively

narrow; the lateral furrow straight, not oblique as in O. montanus. The rest of the

abdomen as in the preceding two species. The recurrent nervure is received a little

in front of the first transverse cubital nervure ; the second cubital cellule is very little

longer than broad, the base slightly wider than the apex. Legscovered with long hair.

Subfam. RHOGADIN.

CLINOCENTRUS.

Clinocentrus, Haliday, Ent. Mag. i. p. 266 (1838).

I believe the insect described below may be regarded as a true Clinocentrus, the

points wherein it differs from the typical species being, to my mind, specific rather than

generic; it has the fifth abdominal segment longer than the fourth, the mesothorax in

front raised nearly to the level of the head, the mesosternum acutely keeled at the

sides, and the wings rather short.

ra Clinocentrus rugulosus.

auf

us, scapo antennarum, palpis pedibusque pallide testaceis, flagello antennarum fusco; alis hyalinis,

stigmate nigro, nervis fuscis. 9.

Long. 5 millim.; terebra 2 millim.

Hab. Guatemaa, Cerro Zunil 4000 feet (Champion).

Antenne 25-jointed, not much longer than the body, bare. Face coarsely punctured,

the front and vertex more finely and closely so. Pro- and mesothorax shining, finely

and aciculately punctured ; a broad, crenulated furrow along the lower side of the pro-

thorax, one along the mesosternum, an oblique one in front of the mesopleure, a broader

one at the point of junction of the latter with the metathorax, and one along the sides

of the mesonotum ; parapsidal sutures wide, crenulated ; scutellum finely punctured,

keeled along the sides, and with four deep, oblong fovee at the base; metathorax

coarsely reticulated. Petiole coarsely striated, the striations wide apart and curved ;

second segment with the basal half less strongly and more closely, the intermediate

part finely and closely, striated, the apex without, gtriation. |

YELICONES, . 387

YELICONES.

Head transverse, slightly tumid in front, excavated above the antenne. Eyes large, oblong, reaching nearly

to the base of the clypeus. Antenne filiform, rather stout, the third joint longer than the fourth. Occiput

scarcely margined. Metathorax with one or two central and two lateral keels on either side: Abdomen ~

flat, sessile, the basal two segments keeled down the centre, striated; suturiform articulation distinct,

striated; ovipositor scarcely projecting. Legs short, thick, the tarsi shorter than the tibiz; fore tarsi with

the basal joint scarcely twice the length of the second, the second, third, and fourth joints not broader than

long, the apical joint much enlarged and as long as the other joints united ; hind tarsi with the basal joint

as long as the other four joints united, the apical joint as long as the preceding three united ; claws pecti~-

nate. Wings with three cubital cellules ; the second cubital cellule small, scarcely or not much more than

twice the length of the first, narrowed at the top; second humeral cellule shorter than the first discoidal

cellule; the recurrent nervure received considerably in front of the first transverse cubital nervure.

If the occiput be said to be not margined (and the margin is so indistinct that it

might be thus described), this genus would fall into Forster’s division “ Exothecides ;”’

if margined, it would fall into the ‘“ Rhogadides.” Iam inclined to regard it as allied

to the latter. The peculiar structure of the tarsi separates it from any of the known

genera of either group. ‘The ovipositor is scarcely exserted.

oa. Yelicones violaceipennis. (Tab. XV. fig. 19, 2.)

Niger, ore, scutello, metanoto abdomineque luteis, palpis albis; alis fumatis. 9.

Long. 8°5 millim.

Hab. Panama, Bugaba (Champion).

Antenne stout, densely microscopically pilose ; the third joint longer than the fourth.

Head shining, the vertex sparsely covered with shallow, minute punctures, and the face

with pale hair; a large shining depression over each antenna, marked with some oblique

keels ; from the ocelli a stout keel runs down the centre of the face to the clypeus; face

strongly obliquely striolated ; eyes margined ; mandibles pale luteous, the tips piceous.

Thorax, except the sides of the pronotum behind, densely covered with a grey pubescence.

Pronotum in front and beneath and the mesothorax closely but not strongly punctured ;

at the apex of the mesonotum, in the centre, close to the scutellum, is a rather long and

narrow space, this space bordered on either side and marked with stout transverse keels ;

the sides of the prothorax also bear keels, and the lateral sutures of the meso- and

metathorax are crenulated. Metathorax coarsely reticulated ; in its centre are two keels,

which are near each other a little past the middle and separate again near the apex

(thus forming an elongated keel at the base and another at the apex); on either side also

there are keels. Abdomen a little longer than the thorax, flat, rounded at the apex ;

the basal segments closely longitudinally striated, the others longitudinally punctured ;

the first and second segments have a keel down the centre, the first also with a keel down

the sides; densely covered with pale hair. Wings smoky, with a bluish tinge; the

recurrent nervure received a little beyond the middle of the first cubital cellule; the

second cubital cellule small, about half the length of the first, narrowed at the top,

3 DD 2

388 HYMENOPTERA.

where it is scarcely half the width of the lower part. Legs stout; the tibiz and tarsi

densely covered with stiff fulvous hair; the femora more sparsely clothed with longer

and softer hair; the anterior coxe, trochanters, and the base of the femora pale

testaceous.

J 2. Yelicones crassicornis.

Ferrugineus, capite, antennis pedibusque nigris, ore, coxis trochanteribusque anterioribus testaceis, palpis

albis ; alis fumatis, nervis stigmateque fuscis. 9.

Long. 8 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Antenne stout, shorter than the body, curled at the apex, 34-jointed, closely pilose.

Face punctured ; front obliquely striated, a keel running down its centre from the ocelli;

vertex shining, scarcely punctured. Pro- and mesothorax impunctate; scutellum

sharply narrowed towards the apex, small, two large foveee at its base; metathorax

obscurely reticulated, with a central keel and two keels on either side. Abdomen not

much longer than the thorax, the basal segments punctured; a keel down the centre of

the first and second segments, the keels bifurcated at the base. The body is covered with

short pale pile, which is longest on the apex of the abdomen. Legs stout, pilose; the

anterior femora testaceous on the lower side; the anterior tibiz and tarsi fuscous

beneath, as are also the middle femora; the tarsi incline to fuscous. The pronotum

in front and the prosternum are blackish.

3. Yelicones melanocephalus. (Tab. XV. fig. 20, ¢ .)

Fulvo-testaceus, antennis, capite, pedibus prosterneque nigris ; alis fuscis, nervis nigris. 9.

Long. 5°5 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Antenne stout, the apex curled; covered with a short fuscous pile. Head very

sparsely pilose; the face rather coarsely punctured ; the front a little depressed over the

antenne, a stout keel in the centre with some oblique keels running into it; the vertex

aciculated; the oral region, mandibles (except at the apex), and palpi pale fulvous.

Thorax shining, sparsely pilose, finely (but not closely) punctured; metanotum more

strongly punctured, furrowed down the centre, and sparsely covered with long pale hair.

Petiole longitudinally striated and punctured, an obscure keel down the side; the sides

distinctly margined. Second segment finely longitudinally striated, punctured at the

apex and keeled down the centre; the other segments obscurely punctured. Legs

densely pilose ; the four anterior coxe and trochanters fulvous; the fore tarsi and the

hind tibie incline to piceous. The neuration is much as in Y. violaceipennis, except

that the second cubital cellule is broader at the top.

RHOGAS. | 389

RHOGAS.

Rogas, Nees, Act. Acad. Leop.-Carol. Nat. Cur. 1818, p. 306.

Rhogas, Marshall, Cat. Brit. Hymen. p. 100 (1872).

This genus has a wide geographical range in both hemispheres, and contains

numerous species.

A. Middle joints of the palpi not enlarged.

a. Eyes deeply incised, reaching to the base of the clypeus.

1 (2). Legs black; wingssmoky. . . . . . 1... ee ee ee « fumipennis.

NN 1. Bhogas fumipennis.

Thorace rufo, abdomine flavo-testaceo, capite, antennis, prothorace pedibusque nigris; alis fumatis.

Long. 10-11 millim,

Hab. Mexico.

Antenne moderately stout, densely microscopically pilose, the joints scarcely separ-

able ; the scape covered with long hair. Face covered with long fuscous hair, projecting

in the middle, punctured; front and vertex shining, impunctate, the former a little

depressed in the middle and also close to the eyes, and with a furrow in the centre ; eyes

margined, rather long, incised on the inner side above the antenne, reaching below the

middle of the base of the clypeus; the head narrowed and not much developed behind

the eyes. Pro- and mesothorax shining, impunctate ; parapsidal sutures deep, not very

wide; metanotum sparsely covered with long fuscous hair, finely rugose, the central keel

distinct, stout, bifurcating towards the apex; the oblique furrow on the mesopleure

rather long, narrow, and situated below the middle; the furrow on the mesosternum

obsolete. Abdomen a little longer than the head and thorax united ; the first and second

segments, and the basal half of the third, closely and finely rugose, a keel down the centre

of the first and second. Petiole with the extreme base depressed, and smooth and shining

in the centre ; without furrow along the sides above. Tibia and tarsi closely and stifily

pilose ; the rest of the legs sparsely covered with hair. Wings shorter than the body,

of nearly uniform colour; stigma fuscous on the lower side ; the recurrent nervure received

before the first transverse cubital nervure and in the first cubital cellule; the second

cubital cellule not half the length of the third, and shorter than the first on the lower

side.

9. Rhogas mexicanus. (Tab. XV. fig. 22, 3.)

Flavo-luteus, antennis nigris, abdomine flavo; alis hyalinis, nervis fuscis, stigmate flavo. ¢ 2.

Long. 9 millim.

Hab. Mexico, Presidio (Forrer).

{

390 HYMENOPTERA.

Antenne 47-jointed, densely microscopically pilose, distinctly tapering towards the

apex. Head finely punctured, sparsely covered with glistening white hair; palpi long,

pilose. Thorax above closely and finely punctured, covered with scattered pale hair ;

metanotum somewhat rugose. Abdomen not much longer than the head and thorax

united; closely longitudinally punctured, the apical segment not nearly so strongly

punctured as the basal one ; the basal three segments becoming gradually, but only mode-

rately, dilated; a depression on the centre of segments 4—6 in the middle, that on

the fourth being the smallest and deepest; a narrow keel in the centre of the first and

second segments, that on the first cleft at the extreme base, that on the second origi-

nating froma small, shining, triangular field; an indistinct keel at the base of the third

segment. Legs pilose; coxe punctured ; hind tarsi inclining to fuscous. The recur-

rent nervure is scarcely interstitial; the transverse humeral nervure received not very

far from the transverse basal nervure; the second cubital cellule a little shorter than

the first ; the second transverse cubital nervure straight and largely bullated.

b. Eyes very slightly incised, not reaching to the base of the mandibles.

x 3. Rhogas sonorensis. (Tab. XVI. fig. Lak)

uteus, punctulatus, pedibus pallide testaceis ; alis hyalinis, stigmate fusco cum basi et apice albis. 9.

Long. 5 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne a little longer than the body, 32-jointed, scarcely pilose, fuscous towards the

apex, striated. Thorax (especially laterally) clothed with whitish hair; metanotum

with a transverse keel at the base, a keel down the centre, and also one down either

side. Abdomen not much longer than the head and thorax united, closely longitudinally

striated ; the first and second segments keeled down the centre. The transverse humeral

nervure is received in the basal third of the first discoidal cellule; the recurrent nervure

is nearly interstitial; the second cubital cellule shorter than the first; the second

transverse cubital nervure nearly obliterated.

B. Middle joints of the palpi dilated.

The following two species probably do not belong to Rhogas, from the typical species

of which they differ in having the joints of the palpi considerably enlarged and dilated.

Pelecystoma, Wesm. (a genus nearly allied to Rhogas), has the third joint of the maxil-

lary palpus dilated on the inner side and securiform ; but in the species here described

the three middle joints of the maxillary and the third joint of the labial palpi are

enlarged, but scarcely so much as in Pelecystoma. The eyes are incised on the inner

side, are large, and reach a little below the base of the clypeus. The antenne are longer

than the body, especially in the male, and are about 50-jointed. The lobes of the meso-

RHOGAS. 391

notum are distinct ; only the lateral keels are present on the metathorax. The basal

segments of the abdomen are longitudinally striated, and keeled in the centre. In the

male (R. dugabensis) the petiole is very narrow, petiolated in fact, and thus differs

still further from the typical Rhogas. As will be seen, the two species differ in

neuration.

a. Transverse humeral nervure received in the middle of the first discoidal cellule ;

the recurrent nervure at a little distance in front of the first transverse cubital

nervure; the second cubital cellule of equal width throughout, a little shorter

than the first. Ovipositor short, scarcely projecting.

4. Rhogas melanocephalus.

Luteus, capite nigro, antennis fuscis; alis fere fumatis, stigmate fusco. 9.

Long. 7 millim.

Hab. Mexico, Cordova (Sallé).

Antenne longer than the body, shortly and densely pilose, 43-jointed. Face finely

transversely striated. Thorax scarcely, if at all, punctured above, obsoletely longi-

tudinally striated ; pleure shining and impunctate in the centre; a stout transverse keel

at the base of the metanotum, a narrower keel down the centre and at eithér side.

Abdomen a little shorter than the head and thorax united; the basal segments rather

strongly longitudinally striated, keeled down the centre, and margined laterally ; the

apical segments impunctate, shining; the ovipositor short, black. The transverse

' humeral nervure is received in the middle of the first discoidal cellule; the recurrent

nervure a little distance in front of the first transverse cubital nervure.

b. Recurrent and transverse humeral nervures almost, if not quite, interstitial ; the second

cubital cellule much longer than the first, and not much shorter than the third ;

the cubital nervure obliterated a little beyond the third cellule. Abdomen subpetio-

late, clavate at the apex.

——T 5. Rhogas bugabensis. (Tab. XV. fig. 23, 3.)

Pallide flavus, abdomine antennisque luteis, mesonoto nigro; alis fere hyalinis, stigmate testaceo. ¢.

Long. 12 millim.

Hab. Panama, Bugaba (Champion).

Antenne 73-jointed, longer than the body; densely pilose, the pile much longer

towards the apex. Head and thorax shining, impunctate. Abdomen rather strongly

longitudinally striolated (except at the apex), the two basal segments margined, more

‘than twice the length of the head and thorax united; petiole long and narrow,

margined laterally. Body and legs covered with pale hair. The transverse humeral

nervure is received not far from the transverse basal nervure; the recurrent nervure

392 HYMENOPTERA.

is scarcely interstitial ; the second cellule much longer than the first; beyond the second

cellule the cubital nervure is obliterated. Legs rather long, the tarsi longer than

the tibie.

LELUTHIA.

Head large, scarcely transverse in front, narrowed behind the eyes, the latter oval; occiput margined. Antenne-

filiform. Thorax elongated, especially the metathorax, the latter about three fourths the length of the

mesothorax. Abdomen sessile, longer than the head and thorax united; the basal three segments large,.

longitudinally striolated; suturiform articulation present, straight or curved; the other segments all

distinct, not retracted. Wings: three cubital areolets ; first abscissa of the radius longer than the second ;

the recurrent nervure recurved before the first transverse cubital nervure ; second humeral cellule shorter

than the first discoidal cellule; anal nervure not interstitial.

I am not quite satisfied that this genus belongs to the “ Cyclostomi;” there is an

incision over the mouth, but the incision can scarcely be said to be semicircular, nor is

it so large as in the normal forms of that division. If it belongs to the latter it would

come nearest to Lhogas.

The very obscure incision in the anal region, however, makes me doubt the relation-.

ship of Leluthia to that genus.

1. Leluthia mexicana. (Tab. XVI. fig. 2, 2.)

Nigra, basi flagello antennarum, ore, trochanteribus geniculisque, sordide testaceis; alis hyalinis, nervis fuscis,.

stigmate nigro. 9. |

Long. 6 millim.; terebra 4 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne 28-jointed, as long as the abdomen, almost bare; second joint about one:

fourth longer than the third, the latter a little shorter than the fourth. Head closely

punctured, bearing some long white hairs. Thorax closely punctured (more strongly

so than the head); the pro- and mesopleure strongly longitudinally striolated, except

the latter posteriorly, this part being strongly aciculated; scutellum much wider than

long, narrowed obliquely towards the apex, aciculated, the transverse furrow at the base

stoutly keeled. Metathorax stoutly longitudinally punctured ; the pleure more or less

reticulated. Sternum aciculated. Abdomen longer than the head and thorax united ;

the petiole and second segment behind the suturiform articulation strongly longi-

tudinally striolated. Suturiform articulation thin, considerably bent backwards ; the

abdomen behind it finely and closely punctured, except at the apices of the segments.

Wings comparatively short and narrow.

Le 2. Leluthia fuscinervis. (Tab. XVI. fig. 3, 2.)

igr

a, basi antennarum pedibusque testaceis, coxis femoribusque ex parte nigris; alis hyalinis, nervis fuscis,.

stigmate nigro. 9.

Long. 4 millim.; terebra fere 2°5 millim.

Hab. Guatemara, Pantaleon 1700 feet (Champion).

LELUTHIA.—CHELONUS. 893

‘ Antenne 25-jointed, covered with a dense microscopic pile, longer than the body,

the second joint a little longer than the third. Head closely and somewhat strongly

punctured, sparsely covered with white hair; eyes margined; mandibles dark testa-

ceous; palpi long, white. Thorax covered with rather long whitish hair; closely

punctured, except the centre of the mesopleure, which is shining and smooth;

metathorax irregularly reticulated, the sides rather more punctured than reticulated ;

. an aciculated space on either side at the base of the metanotum. Abdomen with the

basal two segments, and also the base of the third segment, longitudinally striolated ;

the petiole much more strongly longitudinally striolated, and the third segment also,

but less distinctly so than the second ; the other segments shining, smooth, testaceous at

the apices. The aculeus is pilose, dull testaceous, the apex black. The legs are

covered with white hair, the tibie and tarsi much more densely than the femora;

cox strongly punctured; the femora are black, except at the base and apex and

the front pair beneath. Wings: the transverse basal nervure received not far behind

the transverse humeral nervure; the recurrent nervure not interstitial ; the first trans-

verse cubital cellule almost, if not quite, obliterated; the second cubital cellule

wider at the base than at the apex, through the cubital nervure bending downwards at

the base, and on the lower side a little longer than the first.

Division CRYPTOGASTRI.

Subfam. CHELONINAA.

CHELONUS.,

Chelonus, Jurine, Nouv.- Méthode de Class. les Hymén. p. 289 (1807).

A genus of very wide distribution, and numerous in species.

1 (2). Base and apex of the abdomen with two round reddish spots . . . guadrimaculatus.

2 (1). Base of the abdomen marked with white.

8 (6). Scutellum shining, only finely punctured.

4 (5). Wings hyaline throughout, the base of the abdomen entirely white . basimacula.

5 (4). Wings smoky in front of the stigma, the base of the abdomen with

two white marks. 2. 2 1. 1. 1 1 1 wwe ew ew wf SOMOrENSIS.

6 (8). Scutellum and thorax rugose . oe ee ew ees Gnnulipes.

1. Chelonus quadrimaculatus. (Tab. XVI. fig. 5, 2.)

Niger, geniculis, tibiis tarsisque pro parte albis; thorace punctulato; abdominis maculis 4 rufis; alis hya-

linis. 9.

Long. 4°5 millim.

Hab. Mexico, Northern Sonora (Morrison).

BIOL. CENTR.-AMER., Hymenopt., April 1887. 3 EE

394 HYMENOPTERA.

Antenne a little longer than the body, faintly microscopically pilose, the scape bearing

white hairs. Head closely punctured, more strongly so at the top and behind ; clypeus

shining, finely punctured round the edges, more faintly punctured in the centre;

mandibles red; palpi black. Thorax covered with a short silky white pile; the top

closely, the sides and metathorax more strongly, punctured ; scutellum shining, bearing

some widely separated punctures ; apex of the metathorax semioblique, margined at the

top, and toothed laterally. Abdomen scarcely so long as the head and thorax united,

and bearing on the apical three fourths a close, short, sericeous pile; closely and

uniformly punctured, the base without any carine ; a roundish red mark on either side

at the base and apex. Legs obscure yellowish-white ; the coxe, the trochanters, the

basal three fourths of the four anterior femora, the posterior femora (except the apex),

the apices of the hind tibiz and tarsi, broadly black. Wings hyaline, faintly smoky in

the middle; the costa and nervures in front of the stigma fuscous, behind it yellowish-

white ; first transverse cubital nervure curved ; cubital nervure but slightly bent at the

second cubital cellule.

x 2. Chelonus basimacula. (Tab. XVI. fig. 6, 2.)

Niger, scapo antennarum pedibusque anterioribus rufis, abdominis basi late, tibiis tarsisque posticis albis ;

coxis, femoribus posticis pro parte tibiarumque posticarum apice late nigris; alis hyalinis. 9°.

Long. 4°5 millim.

Hab. Panama, Bugaba (Champion).

Antenne nearly as long as the thorax and abdomen united; 16-jointed, the flagellum

covered with a silvery silky pile. Face transversely striated, the centre indistinctly

keeled ; vertex obliquely striated; front depressed and keeled in the centre; palpi

fuscous; mandibles piceous. Thorax opaque, covered with silky white hair; pleure

rugose ; mesonotum coarsely aciculated, a stout keel running down its entire length, and

two short keels on either side of this at the base ; scutellum shining in the centre, stoutly

keeled at the base and at the sides; metanotum coarsely longitudinally reticulated, its

apex nearly perpendicular. Abdomen about as long as the head and thorax united ; the

base deeply excavated and keeled, the keels being continued on to the top and converging

towards the apex of the first segment ; the basal part closely irregularly striated (this

striation is continued to the apex, but becomes much finer there), the extreme apex being

rather punctured than striated, and also densely covered with a grey pile; the ventral

surface shining, and bearing a keel on either side at the apex. Legs stout, covered with

a white pile; the tips of the coxe, the base and apex of the hind femora, and the base

of the hind tibiz, reddish ; the apices of the tarsi blackish, the middle tibie and tarsi

much paler in tint than the anterior tarsi. Wings: the median nervure at the base, the

transverse basal nervure, and the basal part of the cubital nervure, curved ; the cubital

nervure beyond the second cubital cellule, and the transverse cubital nervure, faint; the

CHELONUS. 395

second cubital cellule contracted at the apex; at the base the nervures are white, at the

apex fuscous, the stigma being also fuscous.

val 3. Chelonus sonorensis. (Tab. XVI. fig. 4, 2.)

ger, geniculis, tibiis tarsisque albidis, apice tibiarum posticarum nigro; thorace punctulato; alis fumatis,

_ basi hyalinis. 9.

Long. 5 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne a little longer than the body; the flagellum almost bare, the scape covered with

rather long pale hair. Head covered with a sericeous pile, in front strongly transversely,

at the sides behind the eyes longitudinally, striated; clypeus shining, obscurely punc-

tured ; tips of the mandibles piceous. Thorax covered with a close sericeous pile,

especially on the sides; coarsely rugose, with some short stout longitudinal keels in

front of the scutellum, the latter shining, impunctate; metanotum coarsely reticulated,

with two stout keels in the centre, its apex semiperpendicular, bordered above by a

stout keel, and ending in a blunt tooth at the sides. Abdomen somewhat pyriform, a

little longer than the head and thorax united, becoming gradually and slightly broader

to the apical fourth; covered with a short dense sericeous pile, which is still denser

towards the apex; longitudinally rugosely reticulated, more strongly so at the base ;

with two stout curved keels and two elongated yellowish-white marks at the base ; the

ventral surface at the base also yellowish-white. Legs testaceous-white ; the coxe, tro-

chanters, basal three fourths of the four anterior femora, the posterior femora entirely,

the tips of all the tarsi, and the apices of the hind tibie, black; the tips of the joints of

the hind tarsi fuscous. Wings hyaline, darker in front of and (especially) below the

stigma; the costa and nervures behind the stigma yellowish-white, the nervures in front

of it fuscous, the stigma itself black; a curved thin white cloud in the first cubital

cellule; the basal nervure dilated at the apex, curved near the costa; the radial nervure

curved at the base and forming a rounded angle where the second transverse cubital

nervure is received; the cubital nervure curved downwards to the end of the second

cubital cellule, and then running obliquely and straight to the apex, the apical part

being much fainter than the basal; the first cubital nervure oblique, straight.

A 4, Chelonus annulipes.

Niger, pedibus anterioribus pro parte annuloque tibiarum posticarum albis; thorace rugoso; alis fumatis, basi

fere hyalinis.

Long. fere 5 millim.

Hab. Guatemata, Volcan de Atitlan 3500 feet (Champion); Panama, Bugaba

(Champion).

Antenne 24-jointed, microscopically pilose, the scape reddish. Head covered with

glistening white hair; rugose, but not so strongly so on the top; front depressed.

3 EE 2

396 HYMENOPTERA.

Thorax rugose throughout, the metathorax much more strongly so; the latter gradually

sloping to the apex, and without tubercles. Abdomen opaque, finely and closely

rugose; the base with some stout striations; with two white spots placed laterally and

at a little distance from the base. Legs stout, sparsely whitish-pilose ; the trochanters,

the fore coxe, the apices of the middle coxe, and a ring near the base of the hind tibie,

white; the front femora, tibiz, and tarsi, and the middle knees, whitish-testaceous, this

colour running into red on the femora and tibia. The fore wings are hyaline behind

the stigma, smoky in front of it.

In some specimens the white marks on the abdomen extend nearly to the middle of

the segment, and the metanotum runs into reticulations ; in others the punctuation is

stronger. A specimen from Bugaba has the hinder tibie entirely black.

Easily known from the other Central-American species by the strongly rugose thorax.

ASCOGASTER.

Ascogaster, Wesmael, Nouv. Mém. Acad. Brux. 1835, p. 226.

This genus (or section) differs from Chelonus in having the eyes bare, and in the first

discoidal cellule being separated from the first cubital cellule.

1. Ascogaster bugabensis.

Niger, scapo antennarum fusco, pedibus rufo-testaceis, dimidio apicali tibiarum posticarum tarsisque posticis

nigris ; alis hyalinis, basi fere fumatis. 9.

Long. fere 4 millim.

dab. Panama, Bugaba (Champion).

Antenne a little shorter than the body, 16-jointed, microscopically pilose ; the third

and fourth joints subequal, the fourth longer than the preceding two united, conical ;

the scape reddish-testaceous beneath. Face shining in the centre, the sides more opaque,

minutely punctured ; vertex shining, minutely punctured ; mandibles obscure testaceous.

Thorax shining, the sides bearing rather long white hair; the mesopleure minutely

punctured along the edges; scutellum rugose; metathorax semiopaque, punctured,

strongly so at the apex, the apex with an oblique slope, margined above, and without

distinct tubercles. Abdomen strongly longitudinally striolated, and with three stout

keels at the base; the apex shining, smooth. Wings hyaline, scarcely infuscated

towards the apex, the nervures dark fuscous, pale at the base; the transverse basal

nervure curved; the radial nervure angled where it receives the transverse cubital

nervure, these nervures being perfectly straight. Legs stout; red, except the apical

three fourths of the hind tibie and the hind tarsi.

MICROGASTER.—AGATHIS, 397

Division AREOLARII.

Subfam. MJCROGASTERINA.

MICROGASTER.

Microgaster (Uatreille), Forster, Verh. Ver. pr. Rheinl. 1862, p. 245.

A well-known genus, found in most parts of the temperate regions of the world.

xX 1. Microgaster mexicanus. (Tab. XV. fig. 24, 2.)

Niger, pedibus anterioribus tibiisque posticis late rufis; alis fumatis, basi fere hyalinis. 9 9.

Long. 4 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne 18-jointed, microscopically pilose. Head and thorax opaque, finely rugosely

punctured, covered above with a sparse pubescence; the pleure with a longer grey

pubescence. Metanotum rugosely reticulated, more shining than the mesonotum; a

stout keel down the centre; the apex rather abrupt. Abdomen shining, the petiole finely

aciculated, raised in the centre, the raised part distinctly margined; a broad and deep

transverse furrow on the second and third segments at the apex, and an indistinct furrow

on either side of the second segment before the middle ; the petiole a little longer than

broad, and also rather longer than the second segment; the second segment about one

fourth longer than the third, the latter nearly as long as the fourth. Legs stout, shortly

pilose ; the first pair reddish, except the bases of the coxe and the tips of the tarsi; the

middle femora broadly black; the hind femora quite black; the hind tibie broadly

black at the apex ; the hind tarsi for the greater part fuscous. Wings obscurely smoky,

except the lower part behind the recurrent nervure, where they are of a deeper smoky

tint ; the cubital nervure almost obsolete beyond the areolet, the latter almost open at

the apex; the recurrent nervure received about the length of the areolet on the lower

side in front of the first transverse cubital nervure; the transverse nervures straight,

not curved.

Subfam. AGATHINA.

This subfamily is very numerously represented in tropical regions, and contains

some large and striking forms.

AGATHIS.

Agathis (Latreille), Wesmael, Nouv. Mém. Acad. Brux. 1837, p. 23.

The elongated, snout-like face makes this genus easily recognizable. Comparatively

few species have been described.

398 HYMENOPTERA.

1 (6). Abdomen black.

2 (8). Tarsiwhite. 2. 2. 1 1 we we ee ee ww ww CrCSSONI.

3 (2). Tarsi black.

4 (5). Mesopleure red 2. 2. 1. 1 1 we ee ee et tw we Chiriquensis.

5 (4). Mesopleure black. . . 2 1. 6 0 ee ee ee ee ew + VtOlaceipennis.

6 (1). Abdomen reddish.

7 (8). Thorax more or less black . . . 1. 1 2 6 + ee et ee aabbispina.

8 (7). Thorax entirely reddish.

9 (10). Head and hind tibie black. . . 1. 1. 1. we ee ew ew ee btbialis.

10 (9). Head and hind tibie red. . . . 2. 1. 2 ee ee ee ew se ferrugineus.

Xx 1. Agathis cressoni. (Tab. XVI. fig. 9, 2.)

“ Agathis albitarsis, Cresson, Proc. Acad. Phil. iv. p. 63 (1865)* (nec Brullé, 1840).

Hab. Mexico, Valladolid in Yucatan (Gaumer); Nicaragua, Chontales (Janson) ;

Panama (Boucard).— ANTILLES, Cuba}.

A specimen from Chontales has the anterior femora red.

ZA 2. Agathis violaceipennis. (Tab. XVI. fig. 8, 2.)

Niger, nitidus, metathorace rufo ; alis violaceis. 9.

Long. 12 millim.; terebra 4 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Antenne stout, tapering towards the apex, shorter than the thorax and abdomen

united; covered with a close microscopic pile, the basal joints of the scape with long

hair. Head not very shining, densely covered with fuscous hair ; front deeply excavated,

the excavation with a stout margin; two keels running down from the ocelli, uniting at

the apex. Thorax with the middle lobe raised, a shallow, not very distinct, depression,

bordered by an obscure keel, in the centre of the lobe; a row of short, stout keels

running down the hinder edge of the pronotum; a stronger and broader keel on the

mesopleure near the metapleure ; some indistinct keels in the front of the mesopleure,

this part having a longish fringe of white hair; the sternum covered with pale hair; a

deep and wide depression, divided in two by a stout keel, in front of the scutellum.

Metathorax long, its apex abrupt; stoutly transversely keeled. Metanotum with two

keels in the centre, the keels uniting at the base but diverging towards the apex; a

waved keel running from each side of the base and uniting with the central keels at

the apex; a keel immediately external to these, and, much nearer the edge, yet

another keel, the latter ending in a stout, leaf-like projection; the lower part of the

metapleure coarsely reticulated. Abdomen shorter than the thorax, shining; the

base of the petiole depressed, the sides channelled; sheaths of the ovipositor black,

hairy. Legs pilose, the femora, coxe, and trochanters bearing long white hair ;

strongly punctured. Wings deeply violaceous; an irregular hyaline spot in the first

cubital cellule.

AGATHIS. 399

_'S 3. Agathis chiriquensis. (Tab. XVI. fig. 7, 3.)

Niger, nitidus, mesopleuris, mesosterno metathoraceque rufis ; alis violaceis. ¢.

Long. 11 millim.

Hab. Panama, David (Champion).

Antenne a little longerthan the body, densely pilose, involute; the scape shining, sparsely

covered with long hair. Head densely covered with fuscous hair; the front not much

depressed in the centre, the depression indistinctly margined ; ocelli raised. Pronotum

with a row of stout keels on its hinder edge; mesonotum with a shallow channel down

the centre of the middle lobe; an oblique line of large keels on the mesopleure, and

a row of similar keels down their hinder edge near the metathorax ; metathorax coarsely

reticulated; metanotum with four longitudinal keels (the central two placed near

together, the others nearer the edge), and a stout keel outside the spiracles. Abdomen

longer than the head and thorax united, narrower than the thorax, shining ; the petiole

long, narrow. Legs densely covered with stiff black hair; punctured. Wings deeply

violaceous, with a narrow, irregular, oblique, hyaline cloud going down from the base of

the stigma through the first cubital cellule. Palpi testaceous.

This insect differs from A. violaceipennis in having the mesopleure marked with a

broad oblique line of carine; the metapleure reticulated throughout; the central

two keels on the metanotum much nearer each other and not forming a triangle,

there being, moreover, only four keels in all; and the mesothorax red laterally and

beneath.

_Y 4. Agathis albispina. (Tab. XVI. fig. 10, ¢.)

Niger, metathorace, coxis posticis supra, femoribus posticis abdomineque rufis; tegulis, palpis tarsisque anteri-

oribus albis; alis fuscis, basi subhyalinis. d.

Long. 8°5 millim.

Hab. Mexico, Valladolid in Yucatan (Gawmer).

Antenne longer than the body, stout, densely and shortly pilose ; the flagellum

fuscous. Head shining, the face densely covered with fuscous pubescence, indistinctly

punctured ; labrum obscure testaceous ; front deeply excavated ; two furrows, converging

at the apex, running down from the ocelli. ‘Thorax covered with a rather long grey pile,

impunctate (the metapleure excepted), and almost shining; middle lobe of the meso-

notum distinct, the sutures reddish; scutellum keeled, the apex and the sides reddish ;

metanotum with two central and two large lateral aree on the upper part, and three

ares on the semivertical apical part. Petiole deeply excavated at the base; the basal

half depressed, keeled along the sides, narrower than the apical part, and raised in the

centre. Second segment depressed at the base, and with a much wider depression in

the middle. Legs (especially the coxe) densely covered with pale hair.

400 HYMENOPTERA.

5. Agathis tibialis. (Tab. XVI. fig. 13, 2.)

Ferrugineus, capite, antennis, palpis, mesosterno, trochanteribus, tibiis tarsisque posterioribus nigris, facie

orbitisque late rufis ; alis fuliginosis. 9.

Long. 8°5 millim.; terebra 4:5 millim.

Hab. Mexico, Presidio (Forrer).

Antenne nearly as long as the body, microscopically pilose, tapering distinctly towards

the apex. Head and thorax shining, impunctate; metanotum rugose, 6-keeled.

Abdomen not much longer than the head and thorax united, much narrower than the

thorax, smooth, impunctate. Legs stout; femora shining, sparsely covered with

rather long white hairs; the apices of the four anterior coxe, and the whole of the hind

coxee and trochanters, black; the hind tibie obscure reddish on the inner side towards

the middle; the anterior tibie darker than the others; the spurs reddish. Wings:

areolet oblique, of equal width throughout, a little longer than broad; an interrupted

white cloud below the base of the stigma.

6. Agathis ferrugineus. (Tab. XVI. fig. 11, ¢.)

Ferrugineus, nitidus, antennis tarsisque posticis nigris ; alis fuliginosis. 9.

Long. 9 millim.; terebra fere 4 millim.

Hab. Mexico, Presidio (Forrer).

Antenne nearly as long as the body, microscopically pilose. Mesothoracic lobes well-

developed, the middle lobe longitudinally furrowed. Metanotum transversely strio-

lated, longitudinally keeled. Abdomen about the length of the head and thorax

united. Wings as in A. éidzalis.

EARINUS.

Earinus, Wesmael, Nouv. Mém. Acad. Brux. 1837, p. 8.

This genus only differs from Microdus in the first discoidal cellule being separated

from the first cubital cellule. This is quite an artificial character, and Karinus would

be better united with Microdus. The three divisions into which I have divided the

latter genus might as well be raised to generic rank if we retain it as distinct from

Earinus, for the presence or absence of the suturiform articulation is of more importance

than the partial obliteration of a nervure. In the only species of Earinus known

from our region the mesonotum is trilobate.

Xx 1. Karinus erythropoda. (Tab. XVI. fig. 20, .)

Niger, nitidus, pedibus rufis, tibiis posticis pallidis, apice late tarsisque posticis nigris; alis fumatis. 9.

Long. 9 millim.; terebra 5 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne a little shorter than the body, almost bare. Face densely, the top more

EARINUS.—MICRODUS. 401

sparingly, covered with rather long silvery-white hair; shining, impunctate. Thorax

(except the centre of the mesopleurz) covered with silvery-white hair, shining, impunc-

tate ; scutellum bordered along the side, a deep curved depression at its base ; metanotum

with two closely placed keels down the centre and another keel near the spiracles.

Abdomen as long as the head and thorax united, the underside covered with rather long

white hair; second segment raised at the base, the raised part broader than long and

narrowed towards the apex. Wings: areolet straight, of equal width, a little longer

than broad, a short nervure issuing from the middle of the outer nervure.

MICRODUS.

Microdus, Nees, Act. Acad. Leop.-Carol. Nat. Cur. 1818, p. 304.

Eumicrodus, Forster, Verh. Ver. pr. Rheinl. xix. p. 247 (1862).

A genus of world-wide distribution.

1. Suturiform articulation obsolete (unless the broad, smooth, transverse furrow on the

second segment in M. basimacula and tts allies represents it).

A. Abdomen without transverse furrows on the second and following segments ; petiole

not distinctly raised in the centre ; ovipositor shorter than the petiole.

a. Body more or less yellow ; wings yellowish, banded with violaceous or black.

1 (6). Mesonotum more or less black.

2 (3). Mesopleure and face black; hind coxe yellow . . . . . . . «~ melanostoma.

3 (2). Mesopleurz and face yellow; hind coxe black.

4, (5). Hind femora yellow . . . 2. 2. 2. 1. ww we wwe ee. pulehripennis.

5 (4). Hind femora black . . . . 2. 1 1 1 ew we ee ee Championi.

6 (1). Thorax without black.

7 (8). Hind femora black . . . . . 1. 1 2 1 we ew ee ee peronatus.

8 (7). Hind femora yellow . . . . 2... 1 1 eee ee eee COnalis.

_-¥ 1. Microdus melanostoma. (Tab. XVI. fig. 15, 3.)

Luteus, antennis, capite, pro- et mesothorace, tibiis tarsisque posticis abdominisque apice late nigris; alis flavo-

hyalinis, fusco bifasciatis, stigmate flavo. <¢.

Long. 10-11 millim.

Hab. Panama, Bugaba (Champion).

Antenne considerably longer than the body; densely pilose, except the scape. Face

bearing shallow punctures; the fovee over the clypeus large, wide, deep; the frontal

depression continuous, deep ; a rather long furrow behind the eyes at the top. Middle

lobe of the mesonotum raised, but without a bordering furrow, its top shagreened ;

metanotal aree obsolete, or nearly so. Abdomen about the length of the head and

BIOL. CENTR.-AMER., Hymenopt., August 1887. 3 FF

402 HYMENOPTERA.

thorax united. Legs rather long, the hind tibie more or less brown in front; covered

with scattered whitish hair. Wings rather long; the middle fascia on the fore pair

extending from the commencement of the transverse basal nervure to the base of the

stigma and of nearly equal width; the apical cloud commencing at the end of the

stigma; the areolet on the lower side as long as wide, the nervures not meeting at the

top; the hind wings faintly clouded towards the apex.

\’ 2. Microdus pulchripennis.

Luteus, antennis, capite, mesonoto, abdominis segmentis 4°-8™, coxis, basi femorum, apice tibiarum late

tarsisque posticis nigris ; alis flavo-hyalinis, fusco-violaceo bifasciatis, stigmate nigro cum apice flavo.

Long. 11 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Antenne densely pilose, a little longer than the body, the tips involute ; the underside

of the flagellum inclining to fuscous, the apex of the scape testaceous. Face rather

strongly punctured, black only at the top; the foves above the clypeus rather long,

deep; frontal depressions deep, triangular above ; the bordering keel acute, projecting.

Thorax shining; the mesonotum with a few scattered punctures, the middle lobe

depressed in the centre, the sides of the depression forming a keel. Metanotum with

two broad, deep, basal and five central arez (the outermost of these the largest, the

central arez of equal width, acutely pointed at the base, and transverse at the apex), and

five apical arese (the central of these small, A-shaped, the lateral ones longer than broad,

the innermost being the larger) ; the aree all very smooth and shining. Abdomen a little

longer than the head and thorax united. Wings: the lateral cloud extending from near

the termination of the transverse basal nervure to the areolet ; the apical cloud broader

and commencing beyond the apex of the stigma; the areolet oblique, horseshoe-shaped,

and with the nervures curved, touching at the top.

This is a stouter insect than Mf. champion; with more black on the thorax, the black

extending down to near the end of the scutellum (which is itself not marked with black),

and there is a triangular black band on the front of the pronotum ; the hind femora are

only slightly black at the extreme base. The metanotal ares do not show any appre-

ciable difference, nor do the wings.

Xs, Microdus championi. (Tab. XVI. fig. 12, ¢.)

Niger, antennis, capite, mesonoto, abdominis apice late, coxis, femoribus, apice tibiarum tarsisque posticis

nigris, ore facieque flavis ; alis flavo-hyalinis, stigmate flavo cum basi nigra. 6.

Long. 10 millim.

Hab. GuatEMaLa, San Gerénimo (Champion).

Antenne stout, tapering very perceptibly towards the apex, densely pilose. Face

strongly punctured. Frontal depressions moderately deep, wide. . Mesonotum punc-

tured, but not strongly, the middle lobe with a broad y-shaped depression at the base.

MICRODUS. 403

Metanotum with the two basal aree small, acute at the apex; of the middle aree the

central one is triangular at the base, transverse at the apex, that next to it being also

acute at the base; there are five apical ares, the central of which is a little dilated

towards the apex, and the inner lateral one smaller than the outer; all the arez are

smooth and shining. Abdomen a little longer than the head and thorax united.

4. Microdus peronatus. (Tab. XVI. fig. 16, 3.)

~ Tuteus, antennis, capite, medio coxarum posticarum, femoribus, tarsis, apice tibiarum posticarum abdominisque

apice nigris ; alis flavo-hyalinis, fusco bifasciatis, stigmate flavo cum basi nigra. ¢ 9.

Long. 11 millim. *

Hab. Panama, Bugaba, David in Chiriqui (Champion).

Antenne stout, distinctly tapering towards the apex, a little longer than the body,

densely pilose; beneath brownish. Face densely pilose, shining, the central part

obscurely punctured ; the cheeks close to the eyes rugose; the oral region broadly tes-

taceous; tips of the mandibles black ; palpi yellow. Thorax shining; the mesonotum

punctured, its middle lobe with two shallow furrows. Metanotum obscurely reticulated

between the keels; with five basal, two wide lateral, a narrow A-shaped central, and four

apical’ areze, the central basal aree not being continued to the apex. Abdomen

distinctly longer than the head and thorax united, compressed; sheaths of the

ovipositor pilose, black, brownish at the apex. Fore wings with the central fascia faint,

but extending from the end of the transverse basal nervure to the base of the areolet ;

the apical fascia about one half broader; areolet oblique, the nervures not much curved,

not meeting at the top. The male similar to the female, but with the apex of the

abdomen obscure fuscous.

This is a larger insect than I. coxalis ; with the abdomen distinctly longer than the

head and thorax united (in WZ coxalis it is not much longer than the thorax); the

metanotal are more clearly defined ; and the punctuation on the mesonotum stronger,

almost rugose.

It will be observed that I. peronatus differs from M. coxalis exactly in those points

in which MV. championi differs from M. pulchripennis.

_-s 5. Microdus coxalis.

Luteus, capite, antennis, coxarum posticarum, apice tibiarum posticarum tarsisque posticis nigris; alis flavo-

hyalinis, fusco bifasciatis, stigmate flavo cum basi nigra. 9.

Long. fere 9 millim.

Hab. Panama, Bugaba (Champzvon).

Antenne stout, closely pilose, brownish beneath. Face densely covered with fuscous

hair; shining, bearing some scattered punctures; oral region testaceous, running inte

brownish ; mandibles black at the tips; palpi yellow. Thorax shining; the mesonotum

finely punctured, the punctures widely separated ; the metapleure shining; the meta-

3 FF 2

404 HYMENOPTERA.

notum with numerous ill-defined aree. Abdomen a little shorter than the head and

thorax united; shining, the apex covered with rather long fulvous hair; sheaths of the

ovipositor black, pilose, their apices fuscous.

b. Body reddish ; wings uniformly fuscous or blackish.

The species in this section are smaller than those in the preceding, and are reddish,

not yellow, in coloration. They also have the ovipositor longer.

e e | *

X 6. Microdus maculipes.

Ferrugineus, antennis, trochanteribus posterioribus, apice tibiarum posticarum tarsisque posticis nigris; alis

fumatis. 6.

Long. 8 millim.

Hab. Guatemata, San Gerénimo (Champion).

Antenne microscopically pilose, the flagellum inclining to fuscous on the underside.

Face obscurely punctured ; tips of the mandibles black; frontal depression separated

into two by a wide furrow. Mesonotum sparingly punctured, the middle lobe not

very distinctly separated. Metanotum deeply transversely sulcated at the base; with

three short central aree (the lateral of which are a little longer than broad, rounded at

the base, and narrowed towards the apex), and three apical arez (the lateral ones very

deep); all the keels stout and projecting. Abdomen a little longer than the head and

thorax united, somewhat dilated towards the apex. Areolet slightly oblique, narrow ;

the nervures straight, united at the top.

UN 7. Microdus femoratus. (Tab. XVI. fig. 17, 2.)

Ferrugineus, capite, antennis, sterno, pleuris pedibusque nigris, ore femoribusque posticis rufis; alis fuscis. 9.

Long. fere 7 millim.; terebra 1:5 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne microscopically pilose, as long as the body. Head shining, impunctate,

the sides and the lower part covered with silvery-white hair. Thorax shining, impunc-

tate, the sides covered with silvery-white hair; metanotum without keels, except a

transverse one at the base and a longitudinal one at the sides. Abdomen a little

shorter than the head and thorax united; with a large triangular red space on each

side on the pleure above in front. Knees testaceous, the spurs white, the fore tibiz

and tarsi more or less obscure testaceous in front. Areolet narrow, oblique; the

nervures straight, united at the top.

MICRODUS. 405

B. Abdomen with a broad, deep, transverse, smooth depression on the second and third

segments ; petiole raised in the centre ; ovipositor longer than the abdomen.

1 (4). Body black, reddish at the base of the abdomen.

2 (8). Wings uniformly blackish, the apex of the metanotum red, the base of

3 (2). Wings lacteous at the apex, the thorax entirely black, the base of the

abdomen not black above . . . - s+ + + + + + + + « Stmulatriz.

__-*; 8. Microdus basimacula. (Tab. XVI. fig. 19, 2.)

Niger, abdominis basi late apiceque metanoti rufis; alis fuliginosis. 9.

Long. 13 millim.; terebra fere 14 millim.

Hab. Mexico (Sal/é).

Antenne somewhat shorter than the body, microscopically pilose, tapering perceptibly

towards the apex. Head semiopaque, the face punctured; frontal depression deep,

continuous, extending to the hinder ocelli. Thorax not very shining ; the mesonotum

faintly shagreened, its middle lobe raised and clearly separated; the metanotum irre-

gularly rugosely reticulated. Abdomen shining, impunctate. Petiole raised in the

centre into a tongue-shaped area, narrow towards the apex; the sides at the apex

excavated ; the sides of the area raised considerably at the base. Second segment with

a broad, deep, transverse furrow in the middle at its apex, and the third segment with

a similar furrow; the first and third segments slightly interrupted in the centre. Areolet

narrow; the nervures straight, uniting at the top.

as 9, Microdus simulatrix. (Tab. XVI. fig. 14, ?; Tab. XVIL. figg. 2 a, maxilla;

2 6, labium.)

Niger, basi abdominis subtus testaceo ; alis fuliginosis, apice lacteis. 2.

Long. 18 millim.; terebra 14 millim.

Hab. Guatemata, near the city (Champion).

_ Antenne: scarcely so long as the body, densely and shortly pilose, the tips curled.

Head shining, covered with a blackish pile; a long, rather deep, fovea a little below

the antenne, and a roundish one on the lower part of the face; a broad and deep

excavation above each antenna, and another broad excavation on the vertex on either

side of the ocelli. Thorax shining, impunctate, covered with a blackish pubescence; —

middle lobe of the mesonotum distinct, the dividing sutures deep, broad, two furrows

down its centre; metanotum shining, impunctate, the apex subvertical, a keel at the

top, a triangular area (surrounded by a deep and wide furrow, and at the apex by three

fover) in the centre, and a stout keel at the sides; metapleuree covered with shallow

‘punctures, bounded behind by a stout keel, depressed in the centre, with three large

fovese at the bottom, and excavated in front (especially above, lower down the depres-

406 . HYMENOPTERA.

sion bears short thick keels, this being also the case on the opposite depression on the

mesopleure). ‘The breast is furrowed deeply in the centre, the furrow bearing short

thick keels. Abdomen about one half longer than the thorax. Petiole excavated at

the base, longer than the second segment; a deep, wide, rather long depression on

either side on the basal three fourths, the depression narrowest at the base, the central

part of the base margined at the edges where it bounds the depression. Second segment

depressed at the base and down the sides, with a broad and deep transverse depression

on either side in the centre, the depression separated only by a narrow partition in the

middle; third segment with a broad and deep excavation at the base ; fourth segment

with a moderately broad and deep transverse depression (narrower and shallower than

that on the second segment) on either side in the middle. The abdomen bears a short

black pubescence. Areolet complete, longer than broad.

10. Microdus albitarsis.

Ferrugineus, capite, antennis, prosterno pedibusque nigris, tarsis albis; alis fuliginosis.

Long. 13 millim.

Hab. Mexico (Sailé).

Head shining, microscopically pilose in front; face punctured; frontal depression

moderately deep, continuous. Thorax shining, the mesonotum finely punctured, the

metanotum strongly rugosely reticulated. Petiole with the basal half raised in the

centre, the raised part becoming gradually narrower from the base to the apex. Second

segment with a stout keel down the sides; the furrows as in M. basimacula.

2. Suturiform articulation distinct, striated, narrow ; base of the abdomen

more or less longitudinally striated.

1. Outer nervure of the areolet obsolete; thorax and the base of the

abdomen ferruginous . . melanocephalus.

2. Areolet shortly petiolate; thorax ‘and the base of the abdomen black . montivagus.

A 11. Microdus melanocephalus.

Ferrugineus, capite, antennis, basi metanoti pedibusque nigris, geniculis, coxis posticis supra femoribusque

posticis rufis; alis fuscis. ¢.

Long. 6°5 millim.,

Hab. Mexico, Northern Sonora (Morrison).

Antenne rather slender, not densely pilose. Head impunctate, shining ; face sparsely

covered with pale hair; a large depression over each antenna. Thorax shining, the

metanotum rather strongly punctured (especially at the base) and indistinctly keeled ;

the sides covered with rather long white hair. Petiole and the base of the second

segment slightly longitudinally striated. Second segment with a transverse striated

MICRODUS.—AGATHIRSIA. 407

furrow in the centre, and another furrow at the apex, the third segment with a broader

furrow a little before the middle; the surface of the segments before and behind these

furrows longitudinally striated. The apical segments each bear a row of white hairs.

Legs covered with a dense white pile; the hind coxe red, except at the apex beneath ;

the hind tibie broadly in the middle, and the base of the hind tarsi, obscure testaceous,

the spurs clear testaceous. Wings: the outer nervure of the cubitus completely obli-

terated, as is also the cubital nervure beyond the areolet; the nervures at the apex, and

the stigma on the lower side, fuscous.

12, Microdus montivagus. (Tab. XVI. fig. 18, 2.)

Niger, abdominis segmentis 2°-7" rufis; alis fuscis. 9.

Long. 5 millim.; terebra 4:5 millim.

Hab. Mexico, Ciudad in Durango 8100 feet (Forrer).

Antenne 29-jointed, as long as the body, closely pilose. Head shining, impunctate,

rather closely covered with a greyish pile. Thorax shining, impunctate, the sides

densely covered with silvery-white pubescence ; metanotum with some indistinct keels,

which do not enclose regular aree. Abdomen not much longer than the head and

thorax united; petiole deeply excavated in the centre at the base, the central part

raised, sharply margined, and with some longitudinal striations; a narrow transverse

striolated furrow in the centre of the second segment, and a less distinct one near the

base of the third segment; an oblique furrow on either side of the second segment

at the base. Areolet narrow, triangular, shortly pedunculated.

AGATHIRSIA.

Agathirsia, Westwood, Tijdschr. voor Ent. xxv. p. 20 (1882).

This genus apparently only differs from Microdus in the labium being greatly

elongated, forming a sort of rostrum. The four described species are from Mexico.

+1. Agathirsia rufula.

Agathirsia rufula, Westw. Tijdschr. voor Ent. xxv. p. 21, t. 5. ff. 1-4".

Hab. Mexico, Chapultepec (Coffin 1).

—* 2. Agathirsia rufiventris.

Agathirsia rufiventris, Westw. Tijdschr. voor Ent. xxv. p. 21, t. 5. ff. 5-8".

Hab. Mexico (Coffin *).

——r 3. Agathirsia proxima.

Agathirsia proxima, Westw. Tijdschr. voor Ent. xxv. p. 22°.

Hab. Mexico (Coffin').

408 HYMENOPTERA.

4, Agathirsia fulvo-castanea.

Agathirsia fulvo-castanea, Westw. Tijdschr. voor Ent. xxv. p. 22, t. 5. ff. 9, 10 a

Hab. Mexico (Coffin +).

AGATHONA.

Agathona, Westwood, Tijdschr. voor Ent. xxv. p. 22 (1882).

This genus was founded upon a single species from Mexico.

| 1. Agathona sericans.

Agathona sericans, Westw. Tijdschr. voor Ent. xxv. p. 28, t. 5. ff. 11-15°.

Hab. Muxico, Chapultepec (Coffin 1).

Division POLYMORPHI.

This is an artificial division used here solely for convenience in arranging the species

of our fauna.

MACROCENTRUS.

Macrocentrus, Curtis, Ent. Mag. i. p. 187 (18338).

X 1. Macrocentrus delicatus. (Tab. XVII. fig. 5, ¢.)

“Macrocentrus delicatus, Cresson, Trans. Am. Ent. Soc. iv. p. 178 (¢ 2).

Hab. Nortn America, Eastern, Middle, and Western States '1—Mexico; Panama,

Volcan de Chiriqui 2500 to 4000 feet (Champion).

As I am not quite sure whether the specimen from the State of Panama is identical

with MW. delicatus (a very variable species) I give a description of it :—

Testaceus, vertice, mesonoto, abdominis dimidio apicali flagelloque antennarum supra nigris ; alis fere hyalinis,

stigmate testaceo, nervis fuscis. <¢.

Long. 11 millim.

Antenne longer than the body, covered with a stiff pile; the scape bare, shining.

Head shining, the face sparsely punctured, with a furrow running from each antenna

down to the clypeus, the furrows converging as they reach it; clypeus small, gradually

narrowed towards the apex; palpi long, pilose. Thorax shining, sparsely punctured ;

metanotum transversely reticulate-striate; lobes of the mesonotum distinct; a deep

and wide hollow, narrowed towards the apex, in front of the scutellum. Abdomen

more than twice the length of the thorax; almost shining; petiole long, narrow,

obscurely punctured, tuberculated before the middle, and longer than the second

segment; the third and following segments obscurely pitted, and covered with a close,

moderately long, pale pile. Legs long and slender; the long spur of the hind tibie

reaching nearly to the middle of the metatarsus. Wings: first abscissa of the radius

MACROCENTRUS.—OPIUS. 409

a little shorter than the second; the first transverse cubital nervure very oblique and

bullated at the bottom; the transverse humeral nervure received a little in front of the

transverse basal nervure ; the recurrent nervure considerably in front of the first trans-

verse cubital ; the second cubital cellule at the apex scarcely half the width of the base,

and the radial and cubital nervures branch upwards and downwards from it respectively.

ZELE.

Zele, Curtis, Brit. Ent. p. 415 (1832); Haliday, Ent. Mag. iii. p. 140 (1835).

Phylax, Wesmael, Nouv. Mém. Acad. Brux. ix. p. 162 (1835).

J 1. Zele fuscicornis. (Tab. XVII. fig. 4, 2 .)

Rufo-testaceus, pleuris sordide flavis, scapo antennarum et vertice nigris ; alis hyalinis, nervis fuscis, stigmate

testaceo. 9.

Long. 10-11 millim.

Hab. GuatEMALA, Paso Antonio 400 feet (Champion).

Antenne longer than the body, densely covered with stiff black pile. Face trans-

versely striated ; front excavated, shining; occiput with some scattered punctures ;

palpi very long; tips of the mandibles blackish; clypeus smooth. Mesonotum with

some large, scattered punctures; parapsidal furrows deep; a large and deep depression

at the base of the scutellum ; pleure shining, impunctate; a longitudinal depression

over the sternum; metanotum blistered. Abdomen longer than the head and thorax

united ; compressed, the apex obliquely truncated ; petiole semiopaque, closely and

rather strongly punctured, longer than the second segment, the sides margined and

very slightly dilated towards the apex; second segment punctured; the other segments

obscurely punctured, the apical one covered with a rather long dense fulvous pile;

ovipositor scarcely projecting. Legs rather long, stout, the base of the femora and the

tibize paler, the hind femora of a more reddish hue than the body. Second cubital

cellule longer than the first transverse cubital nervure, the base almost twice as wide as

the apex ; cubitus broadly curved at the base.

OPIUS.

Opius, Wesmael, Nouv. Mém. Acad. Brux. ix. p. 115 (1835).

U—T 1. Opius mexicanus. (Tab. XVII. fig. 14, 2.)

Ferrugineus, nitidus, antennis pedibusque nigris; alis fumatis. 9.

Long. 4 millim.

Hab. Mexico, Chapultepec (Bilimek).

Antenne stout, longer than the body, the flagellum closely pilose. Head broader

than the thorax; face below the antenne indistinctly keeled in the centre; front

hollowed, but not deeply; ocelli in a black patch; clypeus finely punctured; tips of

BIOL. CENTR.-AMER., Hymenopt., August 1887. 3 GG

410 HYMENOPTERA.

the mandibles black. Thorax stout; parapsidal furrows obscurely indicated in front ;

scutellum longer than broad, narrowed towards the apex ; an oblique furrow below the

point of insertion of the fore wings; metanotum gradually sloping to the apex, with

an obscure keel down the centre, and irregularly punctured on either side of the keel.

Abdomen elongate ovate; if anything shorter than the head and thorax united ; petiole

smooth, shining, and with a shallow furrow on either side. Wings: the tegule black ;

the transverse pobrachial nervure received in the basal fourth of the cellule; the

recurrent nervure in front of the transverse cubital, the cubitus being angled where it is

received ; the second cubital cellule at the apex not half the length of the base; the

cubitus nearly complete. Legs stout, densely pilose.

CALYPTUS.

Calyptus, Haliday, Ent. Mag. ii. p. 128 (1835).

Brachistes, Wesmael, Nouv. Mém. Acad. Brux. ix. p. 110 (1835).

A genus of small extent, found in Europe, North America, and Mexico.

1. Calyptus mexicanus.

Calyptus mexicanus, Cresson, Canad. Ent. iv. p. 229 (¢)’.

Hab. Mexico, Orizaba (Sumichrast 1).

PYGOSTOLUS.

Pygostolus, Haliday, Ent. Mag. i. p. 459 (1834).

I am somewhat doubtful if the species here described belongs to this genus.

1. Pygostolus (?) sonorensis.

Luteus, pedibus pallide testaceis ; alis hyalinis, nervis fuscis, stigmate pallide flavo. 9.

Long. 6°5 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne longer than the body, the flagellum covered with a stiff sparse microscopic

pile; the basal joints slightly oblique at the apex. Face sparsely punctured, especially

above, paler than the vertex; clypeus broadly rounded. Thorax shining, the meso-

notum obsoletely punctured; scutellum very shining, a large. depression, punctured

and keeled down the centre, at its base, the scutum on either side of it striated ; meta-

notum irregularly striated and punctured. Abdomen scarcely so long as the thorax;

the petiole obscurely striated and punctured, and shorter than the second segment; the

other segments impunctate, the apical one covered with a pale pile; ovipositor not

projecting. Wings large: the first abscissa of the radius shorter than the second ; the

transverse humeral nervure received a little in front of the transverse basal nervure ;

the recurrent nervure nearly interstitial; the second cubital cellule at the apex twice

the width of the base.

TOXONEURON. All

TOXONEURON.

Toxoneuron, Say, Bost. Journ. Nat. Hist. i. p. 259 (1835) ; Complete Writings, ii. p. 710; Cresson,

Canad. Ent. v. p. 66 (1878).

Tenthredoides, Cresson, Proc. Ent. Soc. Phil. iv. p. 290 (1865).

1. Toxoneuron ezthiops.

Toxoneuron ethiops, Cresson, Canad. Ent. v. p. 67 (2) *.

Hab. Mexico, Cordova (Sumichrast +).

2. Toxoneuron orizabe.

Toxoneuron orizabe, Cresson, Canad. Ent. v. p. 67 (¢)’.

Hab. Mexico, Orizaba (Sumichrast 1).

3. Toxoneuron mexicanum.

Toxoneuron mexicanum, Cresson, Canad. Ent. v. p. 67 (¢ ¢) *.

Hab. Muxico, Cordova (Sumichrast 1).

4, Toxoneuron thoracicum.

Toxoneuron thoracicum, Cresson, Canad. Ent. v. p. 68 (g¢ ¢)’.

Hab. Mexico, Cordova (Sumichrast *).

5. Toxoneuron seminigrum. (Tab. XVII. fig. 7.)

Tenthredoides seminiger, Cresson, Proc. Ent. Soc. Phil. iv. p. 291 (3 ?)’.

Toxoneuron seminigrum, Cresson, Canad. Ent. v. p. 69’.

Hab. Norrn America, Colorado ! 2.—Mzexico, Presidio (forrer).

In coloration the two specimens from Presidio do not quite agree with the description.

The metanotum in the female is almost without any black, in the male it has the base

and apex rufous; in the female the anterior femora are lined with black on the lower

side in the middle; in the male the four anterior femora are almost entirely black; in

both sexes there is a large black mark on the centre of the mesothorax (but largest in

the female), and a smaller black mark (in the female almost confluent with the central

black mark) on the lateral lobe; in neither sex is there a black mark on the base of

the abdomen. The tegule are black in both specimens, and the wings are paler at

the base.

-—Y 6. Toxoneuron ornatum.

Toxoneuron ornatum, Cresson, Canad. Ent. v. p. 69 (3) ’.

Hab. Mexico, Cordova (Sumichrast ').

3aq 2

412 HYMENOPTERA.

7. Toxoneuron croceum. (Tab. XVII. fig. 8.)

Pallide flavum, macula magna metanoti abdominisque dorso ex parte nigris; alis hyalinis, fascia substigmatali

fumata, stigmate nigro.

Long. 54 millim.

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Head very finely and closely punctured, the clypeus aciculated ; covered with a sparse

whitish pubescence ; face bluntly keeled; clypeus rounded; tips of the mandibles, and

the spot covering the ocelli, black ; a V-shaped, deep, furrow below the ocelli. Thorax _

closely and finely punctured, more strongly so than the head ; the pleural sutures strongly

striolated ; the space on either side of the scutellum, and the metanotal suture, strongly

striolated, black. Metanotum with a line on each side, and the apex broadly, black;

the apex with an oblique slope; the sides obscurely striated. Abdomen longitudinally

striated ; a broad mark on either side of the first segment, a somewhat triangular mark

on either side of the second (the broad end at the apex), and the greater part of the

third segment, black ; the extreme apex more shining, and not striated like the rest of

the surface. Legs pale lemon-yellow; the coxe finely punctured. Wings: the alar

nervures obscure testaceous; the second cubital cellule narrowed towards the apex, the

part of the cubitus bounding it distinctly curved; the recurrent nervure received about

half the length of the first abscissa of the radius in front of the first transverse cubital

nervure ; the transverse discoidal nervure a slightly shorter distance in front of the

transverse basal; the first discoidal cellule nearly one half longer than the second

cubital cellule; the first abscissa of the radius nearly equal in length to the second, and

not half the length of the second abscissa of the cubitus.

OLIXON.

Antenne 13-jointed ; the joints elongated, those of the flagellum of nearly equal thickness; the third joint the

longest. Head elongated; the face transverse, projecting broadly; clypeus broadly transverse; eyes

placed well up, reaching to the top (and not below the insertion of the antennz) ; ocelli absent ; occiput

margined, transverse. Prothorax large, longer than broad, bulging out laterally in front; metathorax

toothed laterally ; scutellum not defined from the scutum. Abdomen subsessile; petiole broader than

long, becoming gradually broader towards the apex, its base margined; the second and third segments

more than twice the length of the first ; the suturiform articulation obsolete; the fourth segment longer

than the petiole; the remaining segments becoming gradually shorter. Ovipositor short, exserted.

Anterior coxe enlarged, the femora short and thick; tibiw shorter than the femora, and about half the

length of the tarsi; hind tarsi more than twice the length of the tibia, slender; patelle of the apical

tarsal joints large, acute; tibial spurs stout, reaching nearly to the middle of the metatarsus. Wings

abbreviated, reaching a little beyond the apex of the petiole; without nervures.

Tam unable to point out the natural position of this curious genus. The elongated

fore legs give it the look of a Bethylid, to which, indeed, it bears a general resemblance;

but I feel inclined to regard it as a true Braconid.

OLIXON.—ALYSIA. 413

1. Olixon testaceum. (Tab. XVI. fig. 21, 2 *.)

Testaceum, apice abdominis segmento 2° nigro, coxis antennisque flavis. 9.

Long. 5 millim.

Hab. Panama, Bugaba (Champion).

‘Shining, almost glabrous, the apical segments of the abdomen with a short white pile;

mesothorax finely and obscurely punctured.

Division EXODONTI.

ALYSIA.

Alysia, Latreille, Hist. Nat. Gén. Crust. et Ins. xiii. p. 177 (1805).

The majority of the “‘ genera” into which Alysia has been divided by Forster appear

to me to be untenable, being founded on what I take to be mere specific distinctions.

A. Anal nervure issuing from the lower part of the posterior discoidal cellule and

acutely angled at the base, the lower (and longer) division of tt not being on a level

with the prebrachial nervure. Second cubital cellule more than twice as long as

wide, of nearly equal width throughout. Radial nervure issuing not far from the

middle of the stigma. Transverse humeral nervure interstitial or nearly so.

Petiole narrow at the base, dilated towards the apex. Antenne sometimes over

100-jointed, more than twice the length of the body.

/__4- 1, Alysia pulchripennis. (Tab. XVI. fig. 24, ¢.)

Nigra, abdominis segmentis 1°-4™ pedibusque rufo-testaceis, tibiis tarsisque posticis nigris, mandibulis palpisque

flavis; alis flavo-hyalinis, fusco bifasciatis ; tegulis flavis. ¢.

Long. fere 9 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Antenne more than twice the length of the body, 103-jointed, covered with a micro-

scopic pile, the third joint longer than the fourth. Face semiopaque, finely punctured,

a shining, narrow line down the centre; covered with longish silvery-white hair. Meso-

thorax with a few scattered hairs; metathorax covered with long grey hair; a stout

keel down the centre of the metanotum. Petiole not much shorter than the second

segment, with a tubercle on either side before the middle; the apex of the abdomen

acute. Wings: the recurrent nervure received a little beyond the first transverse cubital

nervure ; in the second cubital cellule the pobrachial transverse nervure is interstitial.

+2. Alysia xanthoptera. (Tab. XVI. fig. 23, 3.)

Ferruginea, antennis, capite, femoribus, tibiis tarsisque posticis nigris ; alis flavo-hyalinis, apice fumatis. ¢.

Long. 7 millim. ,

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

* Our artist has omitted to indicate the greatly abbreviated wings ; and the specimen figured is erroneously

stated to be a male on the Plate.

414 HYMENOPTERA.

Antenne more than twice the length of the body,-over 100-jointed, microscopically

pilose, the third joint longer than the fourth. Pleure and metathorax covered with a

fulvous pile; a stout keel down the centre of the metanotum. Petiole of nearly equal

breadth, slightly tuberculate before the middle. Neuration nearly as in the preceding

species.

8. Alysia longicornis. (Tab. XVI. fig. 22, 4.)

Nigra, abdomine rufo-testaceo ; alis fumatis, basi flavo-hyalinis. ¢ 9.

Long. 12 millim.; terebra 1 millim.

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Antenne more than twice the length of the body, over 100-jointed, microscopically

pilose. Face sparsely covered with black hair. Pleure and breast with thicker and

shorter fulvous hair; the metathorax with especially long hair. Metanotum with a

stout keel, bifurcated at the apex, down the centre. Petiole dilated laterally on the

lower side, the raised part being of nearly equal breadth throughout, and with a narrow

furrow along the sides; depressed at the base. The apex of the abdomen is blunt.

Wings: the recurrent nervure received in the second cubital cellule; the pobrachial

transverse nervure interstitial; the first branch of the radial nervure half the length of

the first transverse cubital nervure, the latter straight, as is also the basal nervure.

4, Alysia erythrogaster. (Tab. XVI. fig. 25, 3.)

Nigra, abdomine rufo ; alis fusco-violaceis. ¢ 9°.

Long. 6 millim.; terebra 5 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Antenne 58-jointed, the flagellum rather densely microscopically pilose; scarcely

twice the length of the body, the third joint shorter than the fourth. Metanotum with

a double keel, united at the base, running down the centre. Abdomen a little shorter

than the head and thorax united. Petiole subvertical, deeply excavated at the base,

the central raised part keeled laterally, the keels reaching to the apex. Wings: first

transverse cubital nervure but slightly bent, not elbowed ; the recurrent nervure nearly

interstitial ; the pobrachial transverse nervure received at a greater distance from the

latter than is the transverse cubital nervure from the stigma; the cubital nervure distinctly

curved before the middle of the first cubital cellule; the first transverse cubital nervure

a little more than one half longer than the second.

5. Alysia championi. (Tab. XVII. fig. 3, 3.)

Nigra, nitida, capite, mesonoto abdominisque basi rufis ; alis fumatis. 3.

Long. 7 millim.

Hab. Mexico, Orizaba (Bilimek).

ALYSIA. 415

Antenne 46-jointed, scarcely pilose; mandibles, eyes, ocelli, and palpi black. Meta-

notum with a stout keel in the centre, the base marked with testaceous; the apex

semivertical ; rugosely punctured. Petiole strongly longitudinally striolated. Wings:

the transverse pobrachial nervure received in front of the transverse basal nervure ;

_the recurrent nervure interstitial; the second transverse cubital nervure three fourths

of the length of the first ; the first abscissa of the cubitus sinuated, the cubitus becoming

obsolete a little beyond the second cubital cellule.

B. Anal nervure issuing from the upper part of the posterior discoidal cellule and not

angled at the base, it being nearly on a level with the prebrachial nervure. Second

cubital cellule not more than twice as long as wide, much narrowed at the apex.

Transverse humeral nervure not interstitial. Petiole broad at the base, generally

broader than long.

a. Antenne over 50-jointed, the third joint not shorter than the fourth. Apex of the

metanotum not vertical, smooth, impunctate. Petiole not subsessile, not longitudi-

nally striate; the second abdominal segment impunctate. Radial nervure issuing

from near the apex of the stigma.

6. Alysia melanocephala.

Ferruginea, nitida, antennis, capite pedibusque nigris; alis nigro-violaceis. dQ.

Long. 8 millim.; terebra 5 millim.

Had. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Antenne 61-jointed, densely microscopically pilose, the scape shining; nearly twice

the length of the body. Head and body shining, impunctate, the face sparsely pilose.

Metanotum with a keel down the centre. Abdomen a little longer than the head and

thorax united, the sheaths of the ovipositor black, sparsely covered with longish hair.

Legs (especially the tibiz and tarsi) pilose. Wings: the first transverse cubital nervure

curved, elbowed a little before the middle and received in the radial nervure at a little

distance from the stigma; the first recurrent nervure nearly interstitial; the transverse

pobrachial nervure received about the same distance past the transverse basal nervure

as the first cubital is from the stigma.

Let . Alysia bugabensis.

Nigra, nitida, abdominis segmentis 1°-4™ rufis; alis fuscis. ¢.

Long. 8 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Apex of the mandibles strongly striated. Metathorax (especially above) inclining to

piceous-red, and with a very distinct bifid keel down the centre, the bifurcation taking

416 HYMENOPTERA.

place near the base. Petiole deeply excavated at the base, the keels scarcely reaching

to the middle. Apex of the abdomen nearly transverse. Legs covered with long black

hair. Wings: the first transverse cubital nervure straight and received a little more

than half the length of the upperside of the second cubital cellule from the stigma ;

the recurrent nervure interstitial, the pobrachial transverse nervure nearly so.

8. Alysia chiriquensis.

Nigra, nitida, abdomine ferrugineo ; alis fuliginosis. 9°.

Long. 8 millim. ; terebra 4°5 millim,

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Antenne as long as the body and ovipositor united, the joints very closely articulated.

Abdomen shorter than the head and thorax united ; petiole deeply excavated at the base,

becoming gradually broader towards the apex, a tubercle on either side in the middle;

the excavated part keeled, the suture at the apex deep. Wings: the recurrent nervure

interstitial; the second transverse cubital nervure half the length of the first; the second

cubital cellule on the upperside not half the length of the third, and about three fourths

of the length of its lower side; the pobrachial transverse nervure received considerably

in front of the transverse basal nervure.

Allied to A. bugabensis, but is a narrower insect; the second cubital cellule is longer ;

the pobrachial transverse nervure is received further from the transverse basal nervure ;

the petiole is much more deeply excavated at the base and tuberculate in the middle ;

the abdomen is not black at the apex; and the mandibles are not striated.

b. Antenne 27-jointed, the third joint shorter than the fourth. Apex of the mesonotum

vertical, reticulated. Petiole subsessile, longitudinally striated. Second abdominal

segment aciculate. Anal nervure issuing from the middie of the posterior discoidal

cellule. Cubital nervure obsolete a little beyond the third cubital cellule.

‘ A 9, Alysia chontalensis.

Nigra, orbitis oculorum latis, mesonoto ex parte abdomineque rufis; alis fuliginosis. 9.

Long. 7 millim.; terebra fere 5 millim.

Hab. Nicaraeva, Chontales (Janson).

Antenne scarcely so long as the body, 27-jointed, sparsely covered with rather long

hair; the third joint shorter than the fourth, the fourth the longest, the last joint

longer than the penultimate. Metanotum with a stout keel across the base and a

stouter one down the centre; the lateral keels stout; smooth, shining at the base,

reticulated at the apex; the pleure rugose, the sutures deep, wide, and crenulate ; a

deep punctured furrow bordering the breast. “Petiole subsessile, finely longitudinally

striated ; a stout keel on either side of the raised central part at the base; the sides

ALYSIA.—CENOCCELIUS. 417

stoutly keeled and grooved on the inner side of the keel. Second and third segments

finely aciculate. Wings: the radial nervure issuing from a little beyond the middle of

the stigma; the recurrent nervure received in the second cubital cellule, straight ;

the transverse humeral nervure received considerably in front of the transverse basal

nervure.

CENOCCELIUS.

Cenocelius (Haliday), Westwood, Intr. Mod. Class. of Ins. ii. App. p. 62 (1840).

Capitonius, Brullé, Hist. Nat. Ins. Hymén. iv. p. 544 (1846).

Aulocodus, Cresson, Proc. Ent. Soc. Phil. iv. p. 8 (1865).

A remarkable genus which does not fit well into any of the families of parasitic

Hymenoptera. In having the abdomen inserted well upon the thorax it agrees with

the “ Evaniide,” but differs from them in other respects. It forms a connecting link

between the Braconide and Evaniide. Species are known from the Malay Archipelago,

Cuba, South America, and Europe.

Vv 1. Cenoceelius filicornis. (Tab. XVII. fig. 9, 2.)

Testaceus, flagello antennarum thoraceque nigris, tarsis posticis fuscis; alis fere flavo-hyalinis, stigmate

testaceo. °.

Long. 10 millim.

Hab. Panama, Bugaba (Champion).

Antenne filiform, of nearly equal thickness throughout, longer than the body. Head

shining, the face punctured. Thorax: mesonotum shining, rugose in front and laterally,

the pleure shining and impunctate; metathorax rugose, and covered with long pale

hair, the pleuree and sternum also covered with hair. Abdomen twice the length of the

thorax, narrow, linear.

J 2. Cenocelius nigriceps. (Tab. XVII. fig. 13, 2.)

Rufus, antennis, capite pedibusque nigris; terebra quam abdomen longiore; alis fuliginosis; ¢, ore rufo.

df.

' Long. 12-13 millim.; terebra 6 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Antenne about as long as the body, the flagellum microscopically pilose, the apex

brownish. Head shining, the face semiopaque; closely and rather strongly, the sides

to the vertex more irregularly and widely, punctured ; frontal depression shining; the

oral region laterally and the space below the antenne rufous; the face (especially on

the lower part) sparsely covered with pale hairs, the upper and hinder parts with

blackish hair. Pronotum, mesonotum, and scutellum shining, sparsely, indistinctly

punctured ; the sutures broad, strongly crenulated; mesopleuree and sternum almost

shining, covered (but not closely) with rather large punctures; metathorax rugosely

BIOL. CENTR.-AMER., Hymenopt., November 1887. 3 HH

418 HYMENOPTERA.

reticulated. Abdomen shining, impunctate. Legs stout; the coxe and femora shining,

punctured, covered with moderately long fuscous pile; the tibie and tarsi opaque,

closely covered with rufo-fuscous pile.

In the male the thorax laterally is almost entirely rugose, and the front tarsi are

testaceous.

V3. Cenocelius chontalensis. (Tab. XVII. figg. 12,9; 12a, mandibles.)

Rufo-testaceus, antennis, capite pedibusque nigris ; terebra quam corpus longiore ; alis fuliginosis. 9.

Long. 10 millim.; terebra 12 millim.

Hab. Nicaraeva, Chontales (Janson).

This insect is very closely related to C. nigriceps; it differs as follows :—The ovipositor

is much longer; the head is much longer and more narrowed towards the mouth; the

thorax is not so strongly punctured; the antenne and head are entirely black; the

abdomen is longer than the head and thorax united (in C. nigriceps it is shorter than

these parts united), and also narrower (not bulging out in the middle); and the

projection in the frontal depression is larger.

4, Cenocelius pulcher. (Tab. XVII. fig. 10, ¢.)

Luteus, vertice, antennis, abdominis apice, tibiis tarsisque posticis nigris; alis flavo-hyalinis, apice fumatis,

stigmate flavo. ¢.

Long. 8°5 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

Antenne longer than the body, the flagellum almost bare. Face rugosely punctured,

covered with a fulvous pile; vertex shining, impunctate. Mesonotum shining, obscurely

punctate; mesopleure and sternum shining, a row of large fovee at their points of

junction ; metathorax reticulated. Abdomen longer than the head and thorax united,

shining, the extreme base obscurely punctured. The cloud in the wing commences at

the stigma ; the recurrent nervure is scarcely interstitial, being almost received in the

second cubital cellule; the second cubital cellule is 5-angled and is longer than broad.

N XC5. Cenocelius ornatipennis. (Tab. XVIL. fig. 11,2.)

Luteus, antennis, capite, sterno, pleuris, coxis, trochanteribus, apice tibiarum abdominisque apice nigris; alis

flavo-hyalinis, fusco-bifasciatis, nervis flavis, stigmate nigro. 9.

Long. 7 millim. ; terebra 8 millim.

Hab. Panama, Bugaba (Champion).

_ Antenne about the length of the body; densely pilose. Head (especially the face)

densely pilose; face bearing large separated punctures; front deeply and widely exca-

vated, the hollow with a distinct border and with a keel in the centre running down

from the ocelli; mouth, mandibles (except at the apex), and palpi yellow. Thorax

above rugosely punctured, the punctures running into reticulations on the metanotum ;

CENOCLIUS.—MEGISCHUS. 419

a depression on the front of the mesonotum, with a keel in its centre; the sides in front

of the scutellum impunctate. Propleure excavated, punctured ; mesopleure impunctate ;

metapleure rugosely punctured; a hollow on the mesopleure next the metapleure.

Abdomen twice the length of the thorax, shining, impunctate. Wings: the second

cubital cellule not much longer than broad, narrowed at the apex, the cubitus curved

along it; the recurrent nervure interstitial. The middle cloud commences at the base

of the stigma and extends to near its apex; the hind wings have only a central cloud.

Fam. STEPHANIDZ.

This family has been included by many authors among the Evaniide, from which,

however, it differs in having the abdomen attached to the extremity of the metathorax.

The presence of a distinct costal cellule, the globose, tuberculated head, the very thin

antenne, the toothed posterior femora, and the short 3-jointed tarsi (in the female)

render the identification of the genus an easy matter.

MEGISCHUS.

Megischus, Brullé, Hist. Nat. Ins. Hymén. iv. p. 537 (1846).

I am inclined to regard Megischus as congeneric with Stephanus, Jurine; but, as the

species are somewhat confused, I prefer to place those here described in Megischus, to

which in its restricted meaning they actually belong.

Megischus has a wide range over the globe, but comparatively few species have been

described. The species are, I think, very variable, but asa very limited number of

specimens have been examined, it is not possible to say to what extent the variation

extends.

1. Megischus annulator. (Tab. XVIII. figg. 73,89.)

Megischus annulator, Brullé, Hist. Nat. Ins. Hymén. iv. p. 539, t. 40. fig. 5; Sichel, Ann. Soc.

Ent. Fr. 1865, p. 482, t. 10. figg. 6, a, 6, c*.

Bothrioceros americanus, Sichel, Ann. Soc. Ent. Fr. 1860, p. 761’.

Megischus americanus, Sichel, Ann. Soc. Ent. Fr. 1865, p. 480°.

Hab. Guatemata, San Geronimo, El Reposo 800 feet (Champion).—Brazit 1? 3.

A variable species in colour, sculpture, and size. In the Guatemalan specimens the

four anterior legs are brown in the female, of a brighter and redder tint in the male, the

Jatter sex having also the posterior tibie and tarsired. The teeth on the hinder femora

vary in number and size. As the male has not been fully described, I give a detailed

description of it :-—

Head coarsely, transversely rugosely striolated, except behind the eyes, where it is

3 HH2

420 HYMENOPTERA.

shining, impunctate, or nearly so. Prothorax above transversely striolated, laterally

obliquely striolated, except on the oblique broad furrow, which is only striolated on the

sides. Mesonotum strongly transversely striolated, the centre marked with large coarse

punctures. Scutellum impunctate in the centre, the sides with large punctures. Meso-

pleure shining, bearing large, round, clearly separated punctures. Metapleure with a

large, shining, impunctate, oblique depression (narrow at the base), the A-shaped

projecting part behind it rugosely punctured ; in front of this latter is another large,

shining, impunctate space. Metanotum strongly punctured, the punctures more widely

separated at the sides; there is a wide furrow on either side, which does not reach the

base. Petiole striolated as in the allied species, as long as the following three segments

united. The apical segments are finely aciculated, and have a few minute punctures,

and laterally bear at the apex a sparse fringe of pale fulvous hair. Hind coxe irregu-

larly striolated, shining. Hind femora shagreened; the basal tooth a little longer and

stouter than the apical one: there are four teeth between these (of which the basal

one is the longest and the second the stoutest), and four teeth behind the large apical

one (the first the largest, the others becoming gradually smaller). ‘The thickened apical

part of the hind tibie is shagreened. The metatarsus is about one third longer than the

other two joints united; at the apex and on the second joint is a thick brush of fulvous

hair. The body and legs are sparsely covered with long pale hair; the anterior tibie

and tarsi thickly pilose.

2. Megischus niger. (Tab. XVIII. fig. 19, 2.)

Megischus niger, ¥. Smith, Trans. Ent. Soc. Lond. 1862, p. 44(?)’.

Hab. GuatEMALA, Panzos and Teleman in Vera Paz (Champion); Panama (Stretch 1).

This is probably only a form of MW. annulator. Compared with the Guatemalan

specimens of the latter, it has the body darker, the eyes with scarcely any red, and the

wings not suffused with fuscous; the body and legs are less pilose, and the puncturing

on the pleure is much less distinct.

8. Megischus ruficeps. (Tab. XVIII. fig. 9, 2.)

Niger, capite rufo; alis fere hyalinis, ¢.

Long. 19 millim.; terebra 25 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Antenne very slender, about two thirds the length of the body; the scape thick,

twice the length of the second joint; the third joint as long as the scape, and shorter

than the fourth joint; the flagellum bears a few hairs. Head deeply rugosely strio-

lated, except behind the eyes; palpi very long, black; tips of the mandibles black,

striolated. Prothorax above in front coarsely transversely striolated ; behind finely

striated. Mesonotum irregularly transversely striolated. Scutellum shining, impunc-

MEGISCHUS.—MONOMACHUS. 421

tate in the centre; laterally bearing some large scattered punctures. ‘Metanotum

shining, marked with large, widely separated punctures. Pro- and mesopleure semi-

opaque, aciculated, but not strongly; metapleure rugose, opaque. Petiole a little

compressed laterally, irregularly but closely striolated, as long as the following five seg-

ments united, and bearing some long scattered hairs. Apical abdominal segment oblique,

ending abovein asharp point. Legs shining, impunctate ; hind coxe striolated, strongly

and distinctly so towards the apex, the inner side densely pilose, the other parts bearing

long scattered hairs; tibiw and tarsi covered with a dense, shining, fulvous pubescence.

The anterior tooth on the hind femora is broader than the posterior one, which is not

one third its width, through the base not being much broader than the apex ; it is also

a little longer. Between the teeth the femora are waved, and behind the posterior

tooth are four short blunt teeth. Metatarsus more than three times the length of the

other joints united. Claws piceous.

4, Megischus erythrocephalus.

Long. 20 millim.; terebra 21 millim.

Hab. Panama, Buguba 800 to 1500 feet (Champion).

Similar in coloration and clothing to M. rujiceps, but differing as follows :—The

hollows on the pro- and mesopleure are reddish, and the mesonotum is obscured with

red at the base; the prothorax is longer; the mesopleure are striolated ; the scutellum

has only very few punctures at the sides; the depression at the base of the metanotum

is deeper; the metanotum is more strongly punctured; the petiole is stouter and

longer than all the other segments united; the second segment is aciculated (not

impunctate as in UV. ruficeps) ; and the apical segment does not end in a sharp projecting

point. The hind femora are a little longer; the basal tooth has not such a broad base ;

there are four minute teeth (placed at irregular intervals) between the basal and the

apical tooth, and behind the latter are three moderately sized, distinctly separated teeth,

and behind these again are two minute obtuse ones; there is also a small tooth imme-

diately behind and touching the large tooth. The metatarsus is much thicker, and is

not twice the length of the other joints united. The ovipositor is shorter.

MONOMACHUS.

Monomachus (Klug), Westwood, Trans. Ent. Soc. Lond. 18438, p. 252.

This genus is very distinct, and its systematic position is not easily fixed. On the

whole, it appears to me to come nearer Megischus than to any other described genus ;

although it departs widely from Megischus in the form of the antenne, head, and legs.

The position of the abdomen (it issuing from the point of the metathorax) separates it

422 . HYMENOPTERA.

from the Evaniide. Pelecinus does not appear to me to have a very near relationship

with it, and, among other differences, it has the trochanters one-jointed.

1. Monomachus ruficeps. (Tab. XVIII. fig. 6, ¢ .)

Niger, capite, pleuris pedibusque rufo-testaceis ; alis fere hyalinis, apice fumatis. 9.

Long. 22 millim. (abdomine 16 millim.); antennz 10 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Antenne scarcely half the length of the body; scape smooth, shining, glabrous ;

flagellum microscopically pilose, its basal and middle joints a little dilated at the apex ;

the third joint scarcely so long as the fourth. Face closely and rather strongly punc-

tured, not so shining as the vertex, which is only punctured above the outer ocelli, and

there not strongly; the front strongly punctured. The orbits are scarcely punctured ;

the face bears rather long sparse white hair; the ocelli are in a black patch; the tips

of the mandibles are black. Thorax shining, the pleure sparsely pilose; the meta-

thorax punctured, laterally more closely than above. The sides of the scutellum are

finely rugose. The prothorax is a little broader than long, and bulges out a little at

the sides; the parapsidal furrows are complete, narrow, but deep. The petiole is nearly

cylindrical, bent downwards in the middle, and shorter than the third segment, the latter

being longer than the second segment. The coxe are shining, impunctate, and for

the greater part black above ; the femora are sparsely, the tibize and tarsi more closely

and densely pilose. The metatarsus is nearly double the length of the second joint ;

the spurs short and thick. The ventral part of the abdomen is more or less testaceous ;

there is a black splash over the fore coxe; and the hinder edge of the metapleure,

the scutellum above, and the pronotum in front are black.

What appears to be a variety has the scape of the antenne and the petiole obscure

testaceous ; the coxe without any black ; and the thorax black obscured with testaceous

in front.

Fam. EVANIIDA.

In this family I place only the genera which have the abdomen inserted in the top

of the metathorax.

Subfam. AULACINA.

From the next subfamily the “ Aulacine” may be known by the anterior wings

having two recurrent nervures, and by the antenne issuing from a little above the base

of the clypeus.

AULACUS.-—GASTERUPTION. 423

AULACUS.

Aulacus, Jurine, Nouv. Méth. de Class. les Hymén. p. 89 (1807).

A genus of almost universal distribution.

1. Aulacus hyalinipennis.

Aulacus hyalinipennis, Westw. Trans. Ent. Soc. Lond. iil. p. 265 (1848) *.

Hab. Mexico 1.

2. Aulacus ruficollis. (Tab. XVIII. fig. 10, 2.)

Niger, prothorace rufo, tarsis anterioribus testaceis ; alis hyalinis, apice fasciaque substigmateli fuscis, stig-

mate et nervis nigris. 9°.

Long. 9 millim.; terebra 6 millim.

Hab. Guatemata, Torola 1000 feet (Champion).

Antenne filiform, a little longer than the head and thorax united; scape thick,

truncated at the apex, one half the length of the second joint; second joint thicker

than, and about one half the length of, the third joint; the flagellum microscopically

pilose. Face rugose; above the mouth covered with long silvery-white hair; front

closely punctured; vertex impunctate. Mandibles piceous at the base. Prothorax

coarsely reticulated and striolated ; deeply incised above, the edges curved, touching the

head a little below the ocelli; longer than broad, a little narrowed in front, truncated

behind, depressed in the middle above, the depression with stout keels; there is a deep

oblique depression in the pleura. Mesothorax a little shorter than the prothorax ;

above rugosely reticulated; pleuree rugosely punctured; scutellum flat. Metathorax

rugosely punctured ; a deep transverse depression at the base. Abdomen shorter than

the thorax; the petiole pyriform, and forming nearly two thirds of the total length of

the abdomen. The third and following segments are covered with white pile; the

metathorax laterally and below the petiole bearing a longer and denser pile.

Subfam. EV ANIINA.

GASTERUPTION.

Gasteruption, Latreille, Précis Caract. Gén. des Ins. p. 113 (1796).

Fenus, Fabricius, Ent. Syst. Suppl. p. 240 (1798).

Species of Gasteruption are found in most parts of the world.

424 HYMENOPTERA.

1. Middle discoidal cellules separated.

1. Gasteruption maculicorne. (Tab. XVIII. fig. 5, 2.)

Nigrum, opacum, tegulis, apice antennarum, tibiis femoribusque anterioribus rufo-testaceis, tarsis late medio

basique tibiarum albis; alis fere fumatis; 9 terebra quam corpus fere longiore.

Long. 19 millim.; terebra 18 millim.

Hab. GuateMata, Calderas 6000 feet (Champion).

Antenne with the apical three joints entirely, and the twelfth joint on the underside,

rufous; the second and third joints united longer than the scape. Head opaque, nearly

alutaceous; the palpi testaceous, except at the apex ; the cheeks scarcely so long as the

second antennal joint; the space between the hind ocelli not much greater than the

length of the second antennal joint, and separated from the eyes by about an equal

distance. Pronotum elongated, double the lateral depth, opaque, shagreened, except.

laterally behind; mesonotum finely transversely striated, behind finely rugosely punc-

tured ; scutellum finely, longitudinally rugosely punctured; pleure finely rugosely

punctured ; metanotum coarsely transversely rugose. Hind coxe shining, finely, trans-

versely striated; hind tibie broadly thickened, opaque, shagreened; metatarsus a little

longer than the other joints united.

From the following species G. maculicorne differs in being larger, in the terebra

being much longer, &c.

2. Gasteruption tenuicolle. |

Gasteruption tenuicolle, Schletterer, Verh. zool.-bot. Ges. Wien, xxxv. p. 291 (1885)’.

Hab. Mexico, Orizaba (Bilimek 1).

2. Middle discoidal cellules united, the nervure being obsolete.

3. Gasteruption sericeum. (Tab. XVIII. figg. 32, 4¢.)

Nigrum, argenteo pilosum, basi tarsorum anterioribus basique tibiarum albis, abdomine lateribus tegulisque rufo-

testaceis; Q terebra quam dimidio abdomen longiore. ¢ @.

Long. 11-13 millim.; terebra 5-6 millim.

Hab. GuatemaLa, San Gerdnimo (Champion).

Flagellum rather attenuated at the base; the third joint equal in length to, if not

shorter than, the first and second joints united, and shorter than the fourth joint.

Head in the centre (except on the front), and on the vertex, densely covered with

a close silvery-white pubescence, impunctate, the vertex shining; the cheeks a little

shorter than the second joint of the antenne; the hinder ocelli separated from each

other by a space about equalling the length of the scape, and from the eyes by about .

the length of the second joint. Prothorax short, not much longer than its lateral

depth, covered with a thick close silky pile; above finely rugose. Mesonotum opaque,

GASTERUPTION.—EVANIA. 425

coarsely, transversely rugosely striated, the lateral lobes not so strongly as the middle

ones; scutellum strongly aciculated; pleure shagreened below and, as well as the

sternum, thickly covered with a silvery pubescence; metanotum almost shining,

irregularly transversely roughened. Abdomen opaque, shagreened, the basal three

segments on the lower side testaceous. Hind coxe finely but obscurely striated

laterally; hind tibie considerably thickened, opaque, shagreened ; spurs testaceous ;

metatarsus longer than all the other joints united.

The male has the tips of the antenne rufous, and the sculpture on the pleure (espe-

cially behind) much stronger.

‘The base of the four anterior tarsi is broadly white; all the tibiz are white at the

base ; the front tibic incline to testaceous ; and the tegule are testaceous.

The colour of the legs varies, as does also the intensity of the scuipture on the thorax.

EVANIA.

Evania, Fabricius, Syst. Ent. p. 345 (1775).

Hyptia, liger, in Rossi’s Fauna Etrusca, 11. p. 81 (1807).

Brachygaster, Stephens, Il. Brit. Ent. Mand. vii. p. 118 (1835).

Upwards of 50 species of Evania have been described, from all parts of the globe,

and one or two appear to be cosmopolitan. So far as we know, the species are parasitic

on Blattide.

A. Radial and cubital nervures (except in K. nitida) complete, or the cubital nervure

faint from the second cubital cellule. Antenne rather long, the joints elongated.

Hind legs very long. (Species 1-13.)

i. Forks of the metasternal process diverging. (Species 1-3.)

a. Face carinate in the centre and more indistinctly so laterally. Thorax in front

rounded. (Species 1 and 2.)

1. Evania tinctipennis. (Tab. XVII. figg. 16, 16 a-c, 2.)

Nigra, facie et fronte levis, nitidis; petiolo dimidio apicali coxisque posticis punctatis ; alis fere fumatis. 9.

Long. 11-12 millim.

Hab. Costa Rica, Cache (fogers); Panama, Volcan de Chiriqui 4000 to 6000 feet

(Champion).

The lower part of the face, the pleure, the metanotum, the apical three segments of

the abdomen above, and the third antennal joint are densely covered with a silvery-

white silky pile; the legs are less densely covered, and the pile on them is darker; the

pile on the other parts of the thorax is much shorter and fuscous; the petiole has a

BIOL. CENTR.-AMER., Hymenopt., November 1887. ' 30

426 HYMENOPTERA.

short fuscous pile ; and the rest of the abdomen, except the apical segments above, is

glabrous. The antenne are thickened towards the apex; the scape is as long as the

third joint, the latter being longer than the following two joints united ; the fourth joint

is longer by about one sixth than the fifth joint. The eyes are more or less greenish.

The face is rather sharply carinate ; and there isa less well-defined keel on either side,

this keel being placed nearer to the eyes than to the central keel. The front below the

antenne projects and is margined; above the antenne it is depressed. The head is

faintly alutaceous, almost shining. The pronotum is deeply excavated, the sides of the

excavation margined. The mesonotum is almost opaque; the sides are margined, and

have a furrow on the inner side of the margin; the parapsidal furrows reach nearly to

the base, and are moderately deep and curved; the surface bears large, distinctly

separated punctures, the sides being minutely striated. The scutellum has a somewhat

indistinct furrow in the centre, and is, if anything, more strongly punctured than the

mesonotum. The mesopleure are covered with large shallow punctures, except a large

space in front. The sternum is apparently impunctate, and densely covered with

silvery-white pile. The metanotum is largely rngosely reticulated, the metapleure

less strongly so; the lateral furrow is wide, and bears oblique widely-set-apart keels.

The petiole is as long as the upper part of the following three segments united, opaque,

impunctate at the base, densely covered with fuscous pile; the apical half bears large

punctures. ‘The long hind legs are opaque ; the tarsi bear a few stiff bristles on the

underside ; the spurs are a little more than one third of the length of the metatarsus ;

the claws on the underside are rufous; the coxe are pitted sparsely towards the base

and beneath; the metatarsus is a little longer than the second and third joints united.

The wings are more or less fuscous-tinted throughout, but more deeply so at the base ;

there is a narrow oblique smoky cloud in the first cubital cellule, and the apex is

smoky; the recurrent nervure is curved, and is scarcely interstitial; the second cubital

cellule is longer than the third; the second transverse cubital nervure is almost

obsolete.

2. Kivania albo-facialis. (Tab. XVII. fig.17, ¢.)

Nigra, facie alba, punctata; thorace antice rotundato ; petiolo coxisque posticis punctatis ; alisfere fumatis. ¢.

Long. 11-12 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

The face, the sternum, pleure, metanotum, and coxe are densely covered with silvery-

white pile, the rest of the body with fuscous pile. The scape is about half the length

of the third antennal joint, the latter about one fourth longer than the following joint ;

from the fourth the joints are slightly bent and dilated at the apex. ‘The face is

sharply keeled in the centre, and closely and rather strongly punctured ; the central

keel is for the greater part black. Front not much depressed, alutaceous. Mesonotum

shining, sparsely punctured. Parapsidal furrows not very deep, curved, not reaching

EVANIA. 427

to the base; the furrows along the tegule wider and deeper. Scutellum almost

shining, covered with shallow clearly separated punctures. Pronotum finely punctured ;

mesopleuree impunctate, except on the lower part, this part being pitted with round

shallow punctures. Metathorax reticulated, the lower region of the pleure less strongly

so. Petiole covered with large punctures, opaque. Hind coxe covered with large punc-

tures ; tarsi covered with a stiff fuscous pile, without bristles, except at the apex of

each joint; the hind spurs are a little more than one third of the length of the meta-

tarsus; the claws and front spurs are reddish, and the apex of the anterior femora and

tibiz are obscure white in front. Wings obscured with a smoky tint, the space below

the costa fuscous; the apex and an oblique cloud in the first cubital cellule darker ;

the recurrent nervure is interstitial.

_ The male of E£. tinctipennis is unknown to me, as is the female of the species described

above. I scarcely think E. albo-facialis can be the male of E. tinctipennis, the differ-

ence in the sculpture of the head being so marked. I am not aware that the sexes of

Evania differ in sculpture to any appreciable extent. |

b. Face not carinate. Thorax transverse in front. (Species 3.)

3. Evania appendigaster.

[chneumon appendigaster, Linn. Syst. Nat. ed. xi. p. 566.

Evania appendigaster, Fabr. Syst. Ent. p. 345.

Evania flavicornis, Oliv. Encycl. Méth. vi. p. 453.

Evania fuscipes, Illig. in Rossi’s Fauna Etrusca, i. p. 83; Spinola, Rev. Zool. 1840, p. 246;

Westwood, Trans. Ent. Soc. Lond. new ser. i. p. 213; Schletterer, Verh. zool.-bot. Ges. Wien,

1886, p. 10.

Evania levigata, Oliv. Encycl. Méth. vi. p. 453; Latr. Gen. Crust. et Ins. iii. p. 251.

Evania affinis, Le Guillou, Ann. Soc. Ent. Fr. x. p. 311.

Evania unicolor, Say, Long’s 2nd Exped. p. 320; Complete Writings, i. p. 214.

Hab. Norta AMERICA.—MExico, Presidio (Forrer); GuaTeMaLa, San Jose de Guate-

mala (Champion).— Europe, &c.

_ This species is known to be parasitic on Periplaneta orientalis, and is found all

over the temperate and tropical regions of the globe. It was noticed by Mr. Champion

on board ship on the Pacific coast.

ii. Forks of the metasternal process parallel. Thorax truncated in front.

(Species 4-17.)

4, Evania fascialis.

_ Evania fascialis, Spinola, Rev. Zool. 1842, p. 188°.

Hab. Mexico}.

3 2

428 HYMENOPTERA.

a. Parapsidal furrows distinct. (Species 5-12.)

1. Radial and cubital nervures more or less distinct. (Species 5-11.)

5. Evania albispina. (Tab. XVII. fig. 18, 3.)

Nigra, facie, ore spinisque albis; fronte rugosa; petiolo striolato; coxis posticis rugoso-punetatis ; alis fere

hyalinis. <6.

Long. fere 8 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Antenne with the scape not much longer than the third joint, the latter, if anything,

shorter than the fourth joint. Head broad, almost transverse, not keeled in the centre

of the face; the front not depressed. Face punctured, strongly so laterally ; the front

closely punctured. Mesonotum transverse in front, flat, shining, very minutely punc-

tured, shining, the lateral lobes obscurely striated in front ; parapsidal furrows shallow,

the lateral furrows deeper. Mesopleure and sternum roughly punctured, except a

shining impunctate space in the middle of the former. Scutellum coarsely striated.

Metathorax rugosely reticulated. Petiole shining above, with some large shallow

punctures towards the apex; the sides bear some stout striations, which go on to the

top at the apex; the apex is dilated. The hind coxe are opaque and coarsely punc-

tured; the spurs are three fourths of the length of the metatarsus; the tarsi bear

scattered stiff bristles; the metatarsus is shorter than the second and third joints united.

The face, the pleure, and metanotum are covered with rather long white pile; the rest

of the thorax is more sparsely clothed with fuscous pile; the coxe are covered with

rather long white pile, the femora sparsely on the underside, and the tibie and tarsi

thickly, with a fuscous pile. The underside of the scape, and the fore coxe, trochanters,

femora, and tibiz are whitish in front.

6. Evania maximiliani.

Evania maximiliani, Schletterer, Verh. zool.-bot. Ges. Wien, xxxvi. p. 28 (1886) '.

Hab. Muxico, Orizaba (Bilimek 1). |

This species may be known from LE. albispina by the spurs being one third of the

length of the metatarsus, besides being black, and the hind coxe are not punctured.

E. rugifrons differs from it in the pleure being rugosely reticulated, except a small

space below the fore wings, and in the front being keeled and the hind coxe

punctured.

7. Kvania rugifrons. (Tab. XVII. fig. 19, 3.)

Nigra, mandibulis albo-testaceis ; facie et fronte rugosis; coxis posticis punctatis; petiolo levi. ¢.

Long. fere 7 millim, .

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

EVANIA. 429

Antenne with the scape a little shorter than the third joint, the latter nearly equal

in length to the fourth joint; the middle and apical joints slightly dilated at the apex.

Head transverse in front, rugosely punctured, the face covered with long silvery-white

hair; a keel down the centre of the front. Mesonotum transverse, shining; the middle

lobe bearing large deep punctures, the lateral lobes slightly shagreened. Parapsidal

furrows deep, wide; the furrow along the sides crenulated. Scutellum rugosely punc-

tured. Pleure rugosely punctured, the punctures running into reticulations ; the meso-

pleure in front in the middle impunctate. Metathorax coarsely rugosely punctured.

Petiole shining impunctate, double the length of the metanotum. Pleure and meta-

thorax densely covered with rather long white pile; a fuscous pile on the mesonotum.

The petiole sparsely pilose; the apex of the abdomen above sparsely covered with short

greyish pile. Coxe thickly, the femora more sparsely, covered with a silvery-white

pile; tibie and tarsi with a short thick fuscous pile. Hind coxe somewhat coarsely

punctured; tibiz and tarsi covered with a few stiff bristles. Hind spurs reaching

nearly to the middle of the metatarsus, the latter as long as the following three joints

united. Claws apparently simple. The anterior legs are more or less obscure white

in front. The transverse medial nervure is interstitial.

8. Evania ornaticornis. (Tab. XVII. fig. 20.)

Nigra, antennarum articulis 2°-4™ apiceque petioli albis; fronte et facie punctatis ; coxis posticis fere levis ;

petiolo levi; alis fere hyalinis. ¢ 9.

Long. 7-8 millim.

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Antenne thick, slightly attenuated towards the apex; the scape as long as the third

and fourth joints united ; the third joint three times the length of the second, and a little

longer than the fourth joint. Head rugosely punctured, the front a little depressed, a

keel running down its centre from the ocelli, the space on either side of the keel

above the antenne being finely punctured or shagreened. Face almost transverse,

keeled on either side. Mesonotum transverse in front ; rugosely punctured, except the

inner side of the lateral lobes. Parapsidal furrows moderately deep; there is no lateral

furrow. Scutellum rugosely punctured. Pleure rugosely reticulated, except beneath

the wings on the mesopleure, where there is a large shagreened space. Metathorax

coarsely rugosely reticulated. Petiole impunctate, nearly twice the length of the

metanotum. Hind coxe indistinctly punctured, shining; hind spurs reaching nearly

to the middle of the metatarsus, the latter as long as the following three joints

united.

The male has the scape longer and thinner than the female; the third joint is

longer compared to the fourth; and, if anything, the thorax is more closely punctured.

430 HYMENOPTERA.

9. Evania azteca.

Evania azteka, Schletterer, Verh. zool.-bot. Ges. Wien, xxxvi. p. 14 (1886) '.

Hab. Mexico (Bilimek').

This species has the thorax entirely red ; the antenne are entirely black, and have

the scape longer than the first three joints of the flagellum together; the petiole is

longitudinally striolated; the long spur on the hind tibia is half the length of the

metatarsus, the latter being clearly longer than the other joints united; and the head

and thorax are densely punctured.

10. Evania marginata. (Tab. XVII. fig. 21, 9.)

Nigra, facie, ore, orbitis oculorum late apiceque petioli rufis; petiolo coxisque posticis punctatis ; alis

hyalinis. 9.

Long. 6 millim.

Hab. Guatemata, Capetillo (Champion).

Antenne subclavate ; the scapea little longer than the following three joints united ;

the second joint a little shorter than the third and longer than the fourth joint, the

latter being half the length of the third. Head shining, especially on the vertex ; the

face rugosely punctured; the front and vertex bearing large separated punctures, except

above the antenne, where there is an impunctate space. yes very distinctly margined.

Collar transverse, margined on the top. Mesonotum shining, bearing some large scat-

tered punctures ; parapsidal furrows not very distinct. Scutellum rugosely punctured,

semiopaque. Pleure shining, marked with scattered punctures. Metathorax rugosely

punctured. Petiole twice the length of the metathorax, shining, punctured, the apex

not so strongly so. Hind coxe rather strongly punctured, the trochanters very shining

and glabrous; the femora sparsely pilose; the tibiz and tarsi covered closely with

rather long stiff white pile.

11. Evania varicornis. (Tab. XVII. fig. 22, 3.)

Thorace, capite, scapo antennarum pedibusque, ex parte, rufis, antennarum articulis 2°-4™, trochanteribus, spinis

petiolique dimidio apicali albis, abdomine nigro; alis hyalinis. ¢.

Long. 6°5 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

Antenne with the scape a little longer than the second and third joints united; the

third and fourth joints subequal, each about three times longer than the second joint.

Face shining, with scattered punctures; a furrow runs down laterally past the outer

side of the antenne from near the ocelli to the clypeus. Front finely punctured; a

depression above each antenna; vertex rugosely punctured. Thorax nearly transverse

in front, opaque on the middle lobe, the latter bearing large punctures ; lateral lobes

shining, aciculated, a furrow down the centre. Parapsidal furrow narrow, not very

EVANIA. — 431

distinct. Scutellum rugosely punctured. The lower part of the mesopleure and

sternum strongly punctured, the upper part finely punctured, the oblique depression at

the end obliquely striated. Metathorax rugosely reticulated. Petiole shining, impunc-

tate, about one and a half times longer than the metanotum. Hind coxe finely punc-

tured; spurs reaching nearly to the middle of the metatarsus. The legs are rather

long; the coxe are obscure white, black at the base and apex; the trochanters are

white, black at the apex, the posterior pair broadly so; the hind femora, tibie, and

tarsi are black, the femora obscure brown in the middle. The mesonotum laterally

and the metanotum in the middle are obscured with black.

2. Radial and cubital nervures entirely obsolete. (Species 12.)

12. Evania nitida. (Tab. XVIII. fig. 1, 3.)

Rufa, levis, antennis, metathorace postice, abdomine pedibusque posticis nigris, apice petioli facieque albis;

alis hyalinis, apice fere fumatis. ¢.

Long. 4-5 millim.

Hab. Panama, Bugaba (Champion).

Antenne issuing from near the middle of the eyes; scape scarcely so long as the

second and third joints united ; the third joint about three times the length of the second

and slightly shorter than the fourth joint. Face projecting in the middle, obscurely

punctured ; the vertex more closely and strongly punctured. Pro- and mesothorax

shining, impunctate; the middle lobe raised; the parapsidal furrows wide, deep;

mesopleure deeply obliquely excavated, very shining. Scutellum shining, impunctate,

the space in front of it crenulated. Metathorax rugosely punctured; the apex with

an oblique rounded slope, black; the metapleure hollowed, shining, obliquely striated

round the edges, the centre being smooth. The thorax is almost glabrous. Petiole

more than double the length of the metanotum, shining, impunctate. The four anterior

legs are pale reddish-testaceous, the middle femora blackish above. The hind legs are

black, except the greater part of the coxe and the base of the trochanters; they are

sparsely covered with white hairs, the tarsi densely so. The long spur on the tibiee is

more than one third of the length of the metatarsus, the latter being a little shorter

than the other joints united. Tarsi longer than the tibiew, the joints elongated, the

basal pair as long as the tibie.

b. Parapsidal furrows obsolete. Cubital nervure obsolete beyond the first

cubital cellule. (Species 13.)

13. Evania trochanterata. (Tab. XVII. fig. 23, 2.)

Nigra, rugosa, punctata ; pro- et mesothorace rubris, antennarum articulis 2°-4", trochanteribus, spinis petioli-

que dimidio apicali albis ; petiolo levi; alis hyalinis. 9.

Long. 6°5 millim.

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

432 HYMENOPTERA.

Antenne with the scape nearly as long as the third and fourth joints united; the

third joint longer than the fourth, and nearly three times the length of the second joint.

Face densely covered with stiff silvery-white pubescence, rugosely punctured, nearly

transverse. Front densely pilose, the pile not so long as that on the face but closer,

keeled down the centre, rugosely punctured ; the vertex is not so strongly punctured,

and has the punctures more widely separated. Collar almost transverse, but projecting

a little in the middle. Mesonotum shining, the middle lobe marked with large distinctly

separated punctures; the lateral lobes impunctate, a wide shallow furrow down the

centre; parapsidal furrows narrow, moderately deep. Scutellum punctured. Pleure

rugosely punctured, the punctures running into reticulations ; a large shining impunctate

space below the fore wings, and a smaller one below the hind wings. Metathorax

rugosely punctured. Petiole double the length of the metanotum, smooth, shining,

impunctate. Hind coxe punctured ; spurs reaching to the middle of the metatarsus, the

latter scarcely so long as the following three joints united. The four anterior legs

are more or less obscure brownish in front; the anterior trochanters are almost entirely

white, the posterior pair having only the basal half white. .

B. Radial and cubital nervures obsolete. Antenne with the third joint not more than

double the length of the fourth; the other joints not much shorter than the third.

Parapsidal furrows obsolete. Metatarsus generally longer than all the other joints

united. Body more or less red. (Species 14-18.)

14. Evania ocellaria.

Evania ocellaria, Schletterer, Verh. zool.-bot. Ges. Wien, xxxvi. p. 233 (1886)’.

Hab. Mexico, Orizaba (Bilimek 1).

15. Evania rugosa. (Tab. XVII. fig. 25, 2 .)

Nigra, pro- et mesonotum rufis, rugosis ; petiolo punctato; alis hyalinis. 9.

Long. fere 6 millim.

Hab. Guaremaua, Duefias (Champion).

Antenne with the scape scarcely so long as the following three joints united; the

second joint a little longer than the fourth, and shorter than the third. Head rugosely

punctured throughout, the punctures coarsest on the face, sparsely covered with

glistening white hair. Thorax above coarsely rugosely punctured; the pro- and

mesopleure shining, punctured only on the lower side. Metapleure reticulated, the

reticulations elongated in front. Petiole one half longer than the metanotum, shining,

sparsely punctured, and sparsely pilose. Hind coxe impunctate; spurs reaching to

the middle of the metatarsus, the latter longer than all the other joints united.

EVANIA. 433

16. Evania dorsalis. (Tab. XVII. fig. 24.)

Nigra, rugoso-punctata, capite (vertice nigro), pronoto, mesothorace plagaque metanoti rubris, pedibus anticis

rufis ; petiolo punctato.

Long. 5 millim.

Hab. Panama, Volcan de Chiriqui (Champion).

Scape a little longer than the following two antennal joints united; the second joint

a little shorter than the fourth, the latter shorter than the third. Head coarsely

rugosely punctured. Upperside of the thorax coarsely rugosely punctured ; the pleure

only punctured on the lower side; a large oblique excavation on the mesopleure and

a narrower one on the front of the metapleure, both shining and impunctate ; behind

this excavation the metapleure are reticulated. Petiole opaque, scarcely one half

longer than the metathorax, punctured, the punctures distinctly separated. Hind coxe

punctured behind; spurs not reaching to the middle of the metatarsus, the latter

longer than all the other joints united.

17. Evania crassa. (Tab. XVIII. fig. 2, ¢ .)

Rufa, rugosa, dimidio apicali antennarum, maculis 2 metanoti, abdomine pedibusque posticis ex parte nigris ;

petiolo striolato, apice testaceo ; alis hyalinis.

Long. fere 3 millim.

Hab. Panama, Volcan de Chiriqui (Champion).

Antenne stout, thickened towards the apex, the scape as long as the four succeeding

joints united ; the second joint not much shorter than the third, and longer than the

fourth. Head rugosely punctured; the front and vertex not so rugose, with the

punctures more widely separated. Thorax rugosely punctured, the mesopleure only

punctured behind and there not very strongly; the apex of the metathorax vertical

and slightly hollowed in the centre; the punctures very large, running into reticula-

tions. The metapleure are, for the greater part, black. Petiole as long as the meta-

thorax, shining, striolated longitudinally. The four anterior legs are reddish, the

femora obscured with fuscous; the greater part of the hind coxe and trochanters are

reddish ; the long hinder spur is a little more than one third of the length of the

metatarsus, the latter being longer than all the other joints united; the hind coxe

are scarcely punctured.

18. Evania guatemalensis.

Nigra, nitida, punctata, facie, tegulis, pronoto scutelloque rufis; alis hyalinis. <¢.

Long. 3-7 millim.

Hab. Guatema.a, Capetillo (Champion).

“Antenne stout, sparsely covered with a silvery-white pile; the basal joint as long

as the following three joints united; the second joint about one fourth shorter than

BIOL. CENTR.-AMER., Hymenopt., January 1888. 3 KK

434 HYMENOPTERA.

the third, the latter a little shorter than the fourth; the remaining joints very closely

united. Head sparsely covered with a white pubescence; the face coarsely, trans-

versely, rugosely punctured, and with a A-shaped (not very clearly separated)

raised part in the centre; the cheeks more closely and much less strongly punctured ;

front and vertex shining, sparsely covered with shallow, moderately large punctures ;

the vertex raised in the centre; the eyes slightly diverging and clearly margined.

Thorax above bearing separated punctures like those upon the head; the metanotum

more closely punctured, shining; pleure punctured, the punctures running into

reticulations; the sutures striated and shining; the lower part of the mesopleura

shining and impunctate. Petiole shining, longitudinally striolated above. Legs stout,

the hind tibiz and tarsi densely covered with a whitish (not bristly) pile. The meta-

tarsus is as long as the following three joints united; the spurs pale, the longer one

reaching to the middle of the metatarsus. All the knees are pale; the four anterior

tibie and tarsi are pale reddish-testaceous. The scape beneath is pale reddish; the

mandibles are red, black at the tips.

E. guatemalensis is separated from the other species of this group from our region

by the thorax not being rugosely punctured.

Fam. TRIGONALIDE.

A remarkable family, containing comparatively few species, but having a wide range

over the globe. By some authors its only genus is placed among the Evaniide ; but it

does not appear to me to have a very near relationship with Evania.

TRIGONALYS.

Trigonalys, Westwood, Proc. Zool. Soc. 1885, p. 52.

Lycogaster, Shuckard, Blements-ofBrit. Ent. p. 124 4889. /

Seminota, Spinola in Guérin’s Mag. Zool. 1840, Ins. t. 41. p. 1.

1. Trigonalys mexicana.

Trigonalys mexicanus, Cresson, Trans. Am. Ent. Soc. vii., Monthly Proc. Ent. Section, p. vii (¢)".

Hab. Mexico (Sumichrast 1).

2. Trigonalys leviceps.

Trigonalys leviceps, Cresson, Trans. Am. Ent. Soc. vii., Monthly Proc. Ent. Section, p. vii ( 2)’.

Hab. Muxico (Sumichrast 1).

8. Trigonalys ornata.

Trigonalys ornata, F. Smith, Journ. Ent. i. p. 83*; Westw. Thes. Ent. Oxon. p. 123, t. 23. fig. 7”.

Hab. Mexico !2.

PELECINUS. 435

Fam. PELECINIDA.

This family contains but one genus—the well-known Pelecinus. This genus has

been relegated to the Evaniide by many authors, from which, however, it differs in

many respects. In my opinion it is much more nearly allied to the Proctotrupide, to

which Haliday (Hymen. Brit., ‘Oxyura,’ p. 2) referred it. It may possibly be regarded

as the type of a distinct group.

PELECINUS.

1. Pelecinus polyturator. (Tab. XVIII. fige. 13,9; 14,8.)

Ichneumon polyturator, Drury, Ilustr. of Nat. Hist. ii. p. 77, t. 40. f. 47.

Pelecinus polyturator, de Romand, Guérin’s Mag. Zool. 1840, Ins. t. 49. f. 1; Klug in Germar’s

Zeitschr. Ent. ii. p. 382.

Pelecinus politurator, Westw. Trans. Ent. Soc. Lond. iii. p. 249, t. 14. f. 1.

Ichneumon polycerator, Fabr. Gen. Ins. p. 245. nos. 51,52; Spec. Ins. i. p.430; Mant. Ins. i. p. 265;

Ent. Syst. Emend. ii. p. 162; Gmelin, Syst. Nat. 1. p. 2691.

Pelecinus polycerator, Fabr. Syst. Piez. i. p. 111; Latr. Gen. Crust. et Ins. iii. p. 255; Lep. de St.-

Farg. & Serv. Encyl. Méth. x. p. 29; de Romand, Guérin’s Mag. Zool. 1840, Ins. t. 48.

ff. 1,2; Say, Amer. Ent. i. p. 29, t. 15; Complete Writings, i. p. 29, t. 15.

Ichneumon libellula, Christ, Naturg. Class. Nomencl. Ins. p. 352, t. 36. f. 1.

Pelecinus tibiator, Perty, Del. Anim. Artic. Brasil. p. 131, t. 26. f. 8.

Pelecinus clavator (Latr.), Lep. de St.-Farg. & Serv. Encycl. Méth. x. p. 30.

Hab. Nortu America.—Mexico, Cordova (Hége); Britisa Honpuras (Blancaneauz) ;

GuateMaLa, Cerro Zunil, Zapote, Capetillo, Duefias, Calderas, San Gerdénimo, Purula,

Senahu, San Juan in Vera Paz (Champion) ; Nicaracua, Chontales (Belt); Costa Rica,

Cache (Rogers); Panama, Bugaba, Volcan de Chiriqui (Champion).—Sovutu AMERICA,

Colombia to Brazil; ANTILLES, Jamaica !.

A species of universal distribution in the warmer regions of the New World, ranging

from the United States to Brazil. It shows considerable variation in sculpture. A

common insect in the forest-region of Guatemala and the State of Panama, ascending

from the sea-level to an elevation of about 5000 feet (Champion).

2. Pelecinus thoracicus. |

Pelecinus thoracicus, Klug in Germar’s Zeitschr. Ent. iii. p. 384, +. 2. fig. 5°.

Hab. Mexico}.

Fam. PROCTOTRUPIDA.

The European species only of Proctotrupide (or “ Oxyura” as they are sometimes

called) have been at all studied, so it is not possible to offer any remarks on their

distribution in the tropics.

3 KK 2

436 HYMENOPTERA.

Subfam. SCELIONINA.

Seventeen genera have been formed to contain the European species of this sub-

family ; four only of these have been recognized in America, namely Alaptus, Cosmo-

coma, Anaphes, and Scelio, but others undoubtedly exist there. Many of the species

are ego-parasites.

SCELIO.

Scelio, Latreille, Hist. Nat. Ins. xiii. p. 226 (1804).

1. Scelio erythropoda. (Tab. XVIII. fig. 16, ¢.)

Niger, pilosus, rugoso-punctatus, vel scapo antennarum pedibusque rufis; alis flavescenti-hyalinis, nervis

testaceis. ©.

Long. 53-7 millim.

Hab. Guaremata, Cerro Zunil 4000 to 5000 feet, Volcan de Atitlan 2500 to 3500

feet (Champion); Panama, Caldera in Chiriqui 1200 feet (Champion).

Head and thorax roughly rugose all over ; abdomen closely covered with longitudinal

striations, except at the junction of the segments, this part being smooth and shining,

the sides also striolated. Mesonotum without sutures. Antenne as long as the head

and thorax together; second joint a little curved, as long as, if not longer than, the

third; the remaining joints are short, being broader than long, and becoming thicker

towards the bluntly conical apex; the middle joints are produced a little on the lower

side; the apical joints are closely united. .

TRIMORUS.

Trimorus, Forster, Hymen. Stud. ii. p. 101 (1856).

_ Trimorus is distinguished from the other genera of Scelionine with broad basal

segment to the abdomen (the other segments being of nearly equal size) by the post-

scutellum bearing spines, and by the mesonotum being divided into three are by the

sutures of the parapsides.

In these respects the species here described may be regarded as a Trimorus ; but, as

Forster’s description of the genus is so laconic, I think it quite possible it may be proved

hereafter to belong to a different genus.

Trimorus is only known from Europe.

1. Trimorus luteus. (Tab. XVIII. fig. 20.)

Luteus, capite, antennis, abdominis basi et apice late nigris; alis fumatis, basi late flavescenti-hyalinis. 9.

Long. 53 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

TRIMORUS.—PARAMESIUS. 437

Head roughly punctured all over ; thorax covered with shallow large punctures, which

are stronger on the scutellum; the base of the abdomen strongly striated, the striations

continued to the middle of the end of the third segment, but becoming very much

finer and closer; the rest of the abdomen coarsely punctured. Mandibles large, acute,

projecting. Antenne with the second joint thicker and a very little shorter than the third,

the latter double the length of the fourth; the other joints are twice as broad as long,

and almost double the breadth of the scape; the scape and the base of the flagellum

are more or less obscure testaceous. The collar is more or less blackish close to the

head and legs. Scutellum sharply raised from the scutum all round ; the base rounded,

as is also the top; at the apex it is more truncated, and bears a well-defined keel and

has an inward slope. Metanotum large, flat, the sides straight, projecting at the outer

edges into a blunt tooth and retreating from there to the centre (so that the apex is

semicircular), and with a border all round. On the postscutellum are two large stout

black teeth, joined at the base. Mesopleura hollow, striated. Mesonotal sutures wide,

shallow, somewhat canaliculated.

The abdomen in the typical Trimorus is said to be rather long; but this is not the

case with the present species, in which it is only a little longer than the head and thorax

together.

Subfam. DIAPRINZ.

The European forms only of this small subfamily have been studied to any appreci-

able extent, the American species being scarcely known.

PARAMESIUS.

Paramesius, Westwood, Lond. & Edinb. Phil. Mag. i. p. 129 (1832).

Paramesius will, no doubt, prove to be numerous in species when more attention has

been paid to the genus. It has not hitherto been recorded from beyond Europe.

A. Postscutellum bearing a thick curved spine; third joint of the antenne at least three

times the length of the second ; vertex raised, separated by furrows from the sides.

1. Paramesius fasciatipennis. (Tab. XVIII. fig. 18, 2 .)

Niger, pedibus piceo-rufis ; petiolo quam segmentum 2™ fere longiore ; alis fumatis, albo-fasciatis. ¢ 9.

Long. 6-7 millim.

Hab. Panama, Bugaba, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Antenne pilose ; second joint about one third of the length of the third, the latter a

little longer than the fourth, the fifth shorter than the preceding, the sixth distinctly

longer than broad, the seventh thicker and scarcely longer than broad ; the remaining

joints much thicker, broader than long; the apical joint conical and thinner, if any-

438 HYMENOPTERA.

thing shorter than the twelfth, Vertex raised, completely surrounded by a hollow ;

behind in the middle, and clearly separated from the surrounding parts, is a hollow

projecting hood-like process, beneath which the prothorax is attached ; eyes bordered

allround. Mesonotal sutures deep, wide. In front of the scutellum is a wide trans-

verse furrow; the foves at the base of the scutellum are longer than broad, narrowest

at the base, where they approach each other; on either side of the scutellum is a

similar but smaller fovea. Petiole not much shorter than the second segment; a deep

channel in the centre, there being another channel along each side. On the head

behind, on the prothorax, on the metapleura, and on the underside of the petiole are

thick masses of white woolly hair, thickest on the head and prothorax ; the apex of

the abdomen bears some long hairs. Wings hairy, the apex ciliated; beyond the

stigma, on either side, are two somewhat triangular white fascie; the apex is white,

with a fuscous cloud at the extreme end, this cloud being sometimes united to the

black central part at its middle; the basal part bears some lighter clouds. The base

of the flagellum is usually, and the petiole and abdomen are sometimes, more or less

piceous.

The male has the antenne closely pilose, of nearly uniform thickness throughout, the

third joint more than one third longer than the fourth, the latter curved at the base ;

otherwise as in the female.

2. Paramesius maculipennis. (Tab. XVIII. figg. 11, ¢; 12,9.)

Niger, pedibus piceo-rufis ; petiolo quam segmentum 2” dimidio breviore ; alis fumatis, albo-fasciatis. g 9.

Long. 6-7 millim.

Hab. Panama, Bugaba, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Similar in coloration to the preceding species, but differing as follows:—The antenne

are longer and thicker, and the third joint is longer compared to the fourth; the centre

of the mesonotum is raised, this raised portion being carinated towards the scutellum,

and there is a wide hollow on either side of it; there is another hollow beyond and

external to this one; and touching the transverse furrow in front of the scutellum is a

deep fovea, twice as long as broad. The fovee at the base of the antenne are wider and

deeper, and there is another large fovea outside them; at the side of the scutellum

behind there is a large deep fovea open at the apex. The petiole is much shorter and

wider, and in the middle of the central channel is a ridge which extends to near the

middle. |

The base and the apical joints of the antenne are usually piceous-red, and the thorax

and abdomen are more or less tinged with the same colour.

PARAMESIUS. 439

B. Postscutellum pyramidal ; second joint of the antenne scarcely half the length of

the third ; vertex not separated by furrows from the sides.

3. Paramesius canaliculatus. (Tab. XVIII. fig. 24, 9.)

Niger, flagello, antennarum basi pedibusque rufo-piceis ; alis fumatis, apice fere hyalinis. @.

Long. 43 millim.

Hab. Mexico (Saldé).

Antenne with the second joint one half shorter than the third, the fifth one fourth

shorter than the fourth, and the sixth thicker and shorter than the fifth; the seventh

and eighth joints globular, as broad as long; the remaining joints (forming the club)

much wider, broader than long, the last joint bluntly conical, and narrower and a very

little shorter than the twelfth. Head with a few long scattered black hairs; the woolly

hair on the collar moderately thick, griseous. Fovee at the base of the scutellum

large, longer than broad, finely punctured. Postscutellum pyramidal. Petiole three

times as long as broad, deeply and widely channelled in the middle; the sides and

lower surface covered with woolly hair. The wings are subhyaline beyond the stigma,

this hyaline portion forming an elongated fascia close to the border, but clearly sepa-

rated from the hyaline part at the apex ; the stigma scarcely projects downwards from

the costa.

C. Postscutellum pyramidal, but not so much elevated in the centre; the second joint

of the antenne as long as the third; vertex not separated by furrows from

the sides.

4. Paramesius chiriquensis. (Tab. XVIII. fig. 15, 2.)

Niger, nitidus, geniculis tarsisque piceis ; alis fere fumatis, nervis fuscis. 9.

Long. fere 43 millim.

Hab. Panama, Volcan de Chiriqui 8000 feet (Champion).

Antenne scarcely so long as the thorax and abdomen united; sparsely clothed with

hair, the basal joint more distinctly so; the latter as long as the following three joints

united; the second joint nearly as long as the third, which is about one third longer

than the fourth; the eighth to the twelfth joints broader than long, and gradually

becoming broader outwardly ; the thirteenth twice as long as the twelfth and conical at

the apex. Head and thorax with scattered hairs ; parapsidal furrows complete; three

fovere at the base of the scutellum; postscutellum pyramidal ; metanotum irregularly

and roughly reticulated. Petiole nearly three times longer than broad, with two stout

keels down the centre and one on either side; the base of the first segment with

three grooves, the central groove the longest. Tibiz covered with stiff white hairs.

440 HYMENOPTERA.

SPILOMICRUS.

Spilomicrus, Westwood, Lond. & Edinb. Phil. Mag. i. p. 129 (1832).

This genus contains numerous European species; it has been recorded from North

America.

1. Spilomicrus tinctipennis. (Tab. XVIII. fig. 17, 2.)

Niger, basi flagello antennarum, petiolo pedibusque rufo-piceis ; alis fere fuscis. @.

Long. 12 millim.

Hab. Panama, Bugaba (Champion).

Antenne as long as the abdomen and half of the thorax united ; second joint shorter

than the third, the latter longer than the fourth, the fifth as long as broad; the other

joints all broader than long, and becoming gradually broader towards the apex, the

penultimate joint being more than twice as broad as long; the last joint conical,

longer than broad, and longer than the preceding. Pronotum covered with white

woolly hair. Postscutellum with a long, stout, curved spine. Petiole margined; the

space enclosed by the keels finely punctured. The posterior femora have an indistinct

border on the lower side, and at the base a blunt projecting tooth.

Subfam. DRYINZ.

The raptorial claws of the fore legs are a distinctive feature of this subfamily. Species

of Dryine are known from almost all parts of the world.

GONATOPUS.

Gonatopus, Ljungh, Weber’s Beitr. zur Naturk. p. 161 (1810).

The species of this genus are all apterous in both sexes, this character readily

distinguishing Gonatopus from the allied forms.

a, Head and mesothorax punctured.

1. Gonatopus testaceus. (Tab. XVIII. figg. 22,3; 23,2.)

Testaceus, antennarum articulis 4°-6" abdominisque basi nigris. ¢ 9.

Long. 7 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

The first four joints of the flagellum are very slender, the other joints thicker but

becoming more slender again towards the apex; the third joint is as long as the

following two together. The vertex is distinctly margined at the top; from the carina

the head slopes on either side, and is but slightly excavated either before or behind;

the front is a little hollowed on each side of the central keel; the face is semi-

perpendicular ; the upper part of the head is finely punctured, glabrous; the lower

GONATOPUS. 441

orbits of the eyes on the inner side are bordered with white depressed hair. Thorax

covered with long fuscous hairs; prothorax obsoletely punctured ; mesothorax closely

punctured, striated over the coxe, the anterior neck-like part margined at the sides,

broader than long, its teeth blunt; metathorax punctured, transversely striated.

Abdomen broad, tapering to a blunt point behind, the apex brownish, sparsely covered

(especially on the sides of the dorsum) with long, white, glistening hairs. The coxe

are, for the greater part, black behind ; the posterior pair are almost entirely black ; on

the underside they are covered with long white hair; the hinder pair are very finely

punctured ; the anterior pair are almost shorter than the trochanters. All the tarsi

are black at the base, and the posterior tibize are black at the apex.

2. Gonatopus palliditarsis. (Tab. XVIII. fig. 21, 2.)

Rufo-testaceus, thorace, antennarum articulis 5°-7™ abdominisque basi nigris, tarsis pallide testaceis. g 9.

Long. 7-9 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

The antenne become thickened from the fifth joint, and have their third joint

nearly as long as the fourth and fifth together. Front deeply excavated, almost

shining, finely punctured, sparsely pilose; over each antenna is a large fovea, and

between the fovese the head projects, this part being finely shagreened; the lower

part of the orbits of the eyes bears long, depressed, silvery-white hairs. Mandibles

pale testaceous, the teeth piceous. Thorax covered with rather long scattered hairs ;

prothorax smooth, shining, obscurely punctured in front; mesothorax almost cylin-

drical in front, narrow, becoming wider towards the apex, finely punctured and trans-

versely striated, the striations becoming coarser towards the apex; scutellum almost

impunctate, shining ; metathorax transversely striated. Abdomen broad in the middle,

rather flat, shorter than the thorax. Anterior legs much longer than the body.

Coxe finely punctured ; the anterior pair more than one fourth longer than the tro- .

chanters.

The punctuation varies in intensity on the head and thorax. Sometimes the middle

of the mesothorax is quite smooth, especially above, and this is nearly always the case

with the pronotum. The centre of the front is often broadly black; and the back of

the abdomen is sometimes suffused with fuscous.

3. Gonatopus albomarginatus. (Tab. XIX. fig. 1.)

Niger, antennarum basi, ore pedibusque rufo-testaceis, coxis pro parte genibusque posterioribus nigris,

abdominis segmentis albo-marginatis. ¢ 9.

Long. 6-7 millim.

Hab. Panama, Bugaba 800 to 1500 feet, Volcan de Chiriqui 2500 to 4000 feet

(Champion).

Antenne with the third joint slender, longer than the preceding two together; the

BIOL. CENTR.-AMER., Hymenopt., January 1888. 3 LL

442 HYMENOPTERA.

fourth joint a little longer than the fifth ; the other joints subequal, much thicker than

those preceding, scarcely becoming attenuated towards the apex. Head much excavated

behind, not margined ; closely and finely punctured all over, except above the mouth.

The upper and outer orbits of the eyes bear a few rather long fuscous hairs, and the

lower orbits on the inner side some closely pressed white ones. Thorax glabrous;

pronotum emarginated in the middle in front, obscurely punctured. Basal region of

the mesothorax one half longer than broad, margined behind and at the sides, depressed

above in the middle, and clearly separated from the other part, obscurely punctured

and pallid testaceous in colour; at its apex, on each side, isa blunt tooth ; the anterior

half of the mesothorax behind this part is transversely striated, the rest finely punctured

and obscurely, transversely striated. Metathorax flat, transversely striated ; its centre

truncated, becoming hollowed towards the apex. Abdomen a little shorter than the

thorax. Anterior coxe rather longer than the trochanters. |

The basal three joints of the antenne and the apical joint also are testaceous ; but in

one specimen the latter is black. The legs are sometimes entirely without black; and

the abdomen in some examples is testaceous, and only black on the top. G. albo-

marginatus seems to vary considerably in colour and also in the intensity of the

punctuation of the upper surface.

4, Gonatopus orbitalis. (Tab. XIX. fig. 3.)

Niger, antennis (apice excepto), facie, orbitis oculorum infra tarsisque rufo-testaceis. 9.

Long. 5 millim.

Hab. Panama, Volcan de Chiriqui 3000 to 4000 feet (Champion).

Antenne stout, and becoming gradually thickened towards the apex ; the basal joint

curved and not much thicker than the second; the third joint shorter than the following

two, the fourth longer than the fifth; the other joints become gradually shorter and

thicker to the penultimate, the latter being more than half the length of the preceding ;

the last five joints are black. The head is opaque, alutaceous, and sparsely covered

with long, white hair; it is not much excavated either above or behind; there is no

carina leading from the ocelli to the face. Thorax sparsely covered with rather long

white hairs ; prothorax smooth, shining. The narrow basal part of the mesothorax is

a little longer than broad, finely rugose, margined at the sides, and without tubercles,

the posterior portion is smooth and shining at the base, the remaining parts and the

mesopleure being transversely striated. Metathorax transversely striated. Pro- and

mesosternum finely punctured; the latter with a stout keel down the centre and

separated from the pleura by a wide and almost impunctate furrow. Abdomen sparsely

covered with long white hairs. Fore and hind coxe finely punctured, especially at

the sides; the former about the same length as the trochanters. The anterior knees

and the base and apex of the trochanters are testaceous; and the anterior femora and

tibiee are more or less piceous beneath.

GONATOPUS. AAS

b. Head and mesothorax shining, impunctate.

5. Gonatopus dromedarius. (Tab. XIX. fig. 2.)

Niger, nitidus, antennarum articulis 1°, 2°, 5°, 6° testaceis, pedibus rufis, coxis nigris, tarsis anticis apiceque

coxarum albis, tarsis posticis pallide testaceis. 9°.

Long. 6 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Antenne slender, slightly thickened towards the apex; the third joint double the

length of the first. Head broad, shining, impunctate, moderately depressed above ;

the orbits of the eyes in front broadly obscure brownish; the tips of the mandibles

piceous. Thorax shining; metanotum shining, striated, the strie widely separated.

The prothorax above rises into a broad hump behind; the posterior part of the

mesothorax and the anterior portion of the metathorax also form a hump. The

anterior neck-like part of the mesothorax is longer than the posterior part, the

posterior half being also white; the raised margin separating the two is sharp and

distinct ; behind this the mesothorax, laterally, is striolated.

6. Gonatopus apicalis. (Tab. XIX. fig. 4.)

Niger, coxis subtus trochanteribusque albidis, ore, femoribus posterioribus subtus, genibus, tibiis posterioribus

tarsisque pallide testaceis ; antennis testaceis, articulis 8°-10™ nigris. 9°.

Long. 6°5 millim.

Hab. Panama, Volcan de Chiriqui 3000 to 4000 feet (Champion).

Antenne with the third joint not much longer than the fourth and fifth joints

together, the fourth a little longer than the fifth ; from the latter the joints are thicker

than the third and fourth; the basal joint of the scape is black above, yellowish-

testaceous for the rest; the basal joints of the flagellum are obscure fuscous above.

Head with the front flat, deeply excavated, margined, convex and almost perpendicular

behind ; smooth, shining, impunctate, bearing a few rather long hairs behind ; the face,

the inner orbits of the eyes to a little above the middle, and the lower part of the front

in the centre are obscure yellowish or whitish-testaceous. Thorax smooth, shining,

except the metathorax, the latter being transversely striated and the striations wide

apart; the narrow front region of the mesothorax is more than double as long as

broad, margined at the sides, and bears two obtuse tubercles towards the middle; the

pronotum and the mesothorax bear a few rather long white hairs, and the metanotum

is closely covered with similar hairs. The bases of the abdominal segments are faintly

punctured, opaque. Anterior coxe a little longer than the trochanters.

3 LL2

444 HYMENOPTERA.

DRYINUS.

Dryinus, Latreille, Hist. Nat. Ins. xiii. p. 228 (1804) [sec. Forster, Hymen. Stud. i. p. 90

(1856) ].

This genus is apparently more numerously represented in tropical than in temperate

regions.

The group of D. MACULICORNIS.

Vertex depressed; occiput concave ; ocelli in @ triangle ; eyes converging in front ;

third joint of the antenne double the length of the first ; third joint of the anterior

tarsi double the length of the fourth; prothorax above bluntly keeled, longer than

the mesothorax ; parapsidal furrows obsolete ; body rather long, narrow.

1. Dryinus maculicornis. (Tab. XIX. fig. 5.)

Niger, antennis testaceis cum articulis 5°-7™ nigris, clypeo mandibulisque albis, tarsis abdominisque apice

testaceis. ¢ Q.

Long. 6 millim.

Hab. PanaMa, Bugaba 800 to 1500 feet, Volcan de Chiriqui 2000 to 3000 feet

(Champion).

Antenne with the apical five joints of the flagellum thicker than the basal joints;

joints 7-9 brownish beneath ; the basal joint white on the lower side, fuscous above.

Head closely punctured, covered (especially along the eyes) with long white hair; the

clypeus in the middle and the tips of the mandibles piceous; palpi fuscous. Thorax

covered with rather long white hair; the pro- and mesothorax closely and somewhat

strongly punctured, the former laterally, on the lower side, finely, longitudinally

aciculated ; metanotum coarsely, longitudinally striolated. Abdomen scarcely so long

as the thorax; the basal three segments finely aciculate, the apical segment almost

impunctate. The legs are sparsely covered with white hair; more or less black above,

the front part white at the apex, the femora and tibie more or less brownish beneath ;

the coxe and anterior trochanters are obscure brownish-testaceous. The wings are

milky-white at the extreme base between the transverse basal nervure and the base of

the stigma (which is white), and fusco-hyaline in front of the stigma.

2. Dryinus alticola. (Tab. XIX. fig. 6.)

Niger, antennarum articulo 5° tarsisque testaceis; alis fuscis, fascia medio apiceque hyalinis. °°.

Long. fere 6 millim.

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Head closely, longitudinally, and rather strongly punctured; vertex scarcely

depressed ; a narrow keel runs down from the ocelli; palpi whitish. Prothorax finely

longitudinally striated; the posterior part raised into a rather long hump, which is

rather sharp in the centre. Mesothorax closely and rather strongly punctured ;

DRYINUS. 445

metanotum coarsely longitudinally striolated, the strie almost running into reticula-

tions; metapleure punctured, the punctures running into striations. Abdomen

smooth, shining, shorter than the thorax. Wings as in D. maculicornis.

Apart from the difference in the coloration of the legs and antenne, D. alticola is

separated from D. maculicornis by the vertex being scarcely depressed, and the

prothorax above distinctly separated into a lower anterior and a raised posterior part;

and also by the longer metathorax and the stouter antenne.

The group of D. RUFICEPs.

Vertex slightly depressed; occiput almost transverse; anterior ocellus considerably

in front of the posterior ; eyes converging in front; third joint of the antenne

more than double the length of the first, the latter a little longer than the fourth ;

third joint of the anterior tarsi longer than the fourth ; prothorax bluntly keeled in

the centre above; parapsidal furrows obsolete.

3. Dryinus ruficeps. (Tab. XIX. fig. 7.)

Rufus, medio antennarum, meso-, metathorace coxisque posticis nigris.

Long. 7 millim.

Hab. Payama, Bugaba (Champion).

Antenne inserted in the lower third of the head; the joints becoming slightly

thickened from the fifth; the third joint as long as the following three joints together ;

the fourth joint a little longer than the fifth, the latter being longer than the sixth ;

the apical joint one half longer than the preceding. Head longitudinally striated ;

behind it is but slightly convex; front excavated; eyes converging anteriorly; the

orbits of the eyes with short pale hair; the two posterior ocelli situated at the extreme

rear, the front ocellus larger and placed at a considerable distance from them. Prothorax

half the length of the mesothorax, bluntly and roundly ridged in the back and with a

fine keel in the centre; the back transversely striated, the sides obscurely rugose ; its

apical margin is whitish-yellow. Mesothorax coarsely rugose ; in front is a smooth,

impunctate part, narrower and flatter than the rest and separated from it by a ridge;

scutellum raised, separated from the scutum by a wide, nearly straight, groove ; pleurz

densely covered with long white pubescence. Metanotum separated from the meso-

notum by a slightly curved furrow; behind this turrow is a more distinctly curved and

deeper one; the metathorax is rugosely reticulated, and behind it is closely covered

with white pubescence which hides the reticulations. Wings: there is a rather long

mark at the base of the costal cellule, a narrower one at the end of the discoidal cellule

(stretching nearly across the wing), and a broad one at the stigma.

An example probably referable to the same species has the tibiz inclined to white in

front and lined with black behind, and the abdomen with three broad black bands.

446. HYMENOPTERA.

The group of D. MELANOCEPHALUS.

Vertex convex, not depressed ; occiput transverse; ocelli in a triangle ; eyes parallel ;

third joint of the antenne about one third longer than the first ; head well-developed

behind, narrowed behind the eyes; prothorax shorter than the mesothoraz ; para-

psidal furrows almost complete.

4. Dryinus melanocephalus. (Tab. XIX. figg. 15, 26, var.)

Niger, thorace, ore, antennarum articulis 1°-5™, femoribus tibiisque anticis rufis, mesosterno basique femorum

anticorum nigris ; alis hyalinis, fusco-bifasciatis.

Long. 4-5 millim. .

Hab. Panama, Bugaba, Volcan de Chiriqui 2000 to 3000 feet (Champion).

Antenne stout, thickened towards the apex, sparsely pilose. Head covered with

rather long white or fuscous pubescence; coarsely rugose, the ruge running into

reticulations. Eyes margined. Thorax covered with long white hair, sparsely punc-

tured, the metanotum at the sides transversely striolated ; prothorax laterally deeply

excavated; mesonotum almost impunctate; the parapsidal furrows deep, wide, not

reaching to the scutellum, Abdomen shining, impunctate. Legs covered with rather

long white hairs; anterior tibie considerably thickened.

The amount of red on the legs varies; the tegule are black, and usually the

mesonotum near them is marked with black; the tarsi are more or less marked with

testaceous ; and the base of the abdomen beneath is sometimes piceous-red, and the

| apex is sometimes testaceous.

5. Dryinus nigricans. (Tab. XIX. fig. 8.)

Niger, coxis trochanteribusque anterioribus albis, ore, mandibulis, apice tarsorum, antennarum articulis 5° et 6°

abdominisque apice testaceis; alis fumatis, basi et fascia medio hyalinis. ¢@.

Long. 6 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

Antenne pilose, thickened towards the apex; the basal joint whitish beneath, and

scarcely twice the length of the second. Head and thorax opaque, finely punctured,

densely covered with white hair; parapsidal furrows distinct, but not very broad or

deep ; the furrow in front of the scutellum wide and deep; metanotum finely punc-

tured, obscurely reticulated towards the base. Abdomen smooth, shining, impunctate,

and as long as the thorax. The femora bear some rather long scattered hair, and the

tibiee and tarsi are covered with a closer and thicker pile; the anterior femora are

considerably thickened, and whitish beneath. Wings: the radial nervure is angled in

the middle, and extends to the apex; the transverse humeral nervure is received shortly

before the transverse basal nervure; the stigma is black, white at the base; the extreme

base, a fascia in front of the transverse basal nervure, and a stripe in front of the

stigma are clear white; the apex is fainter than the middle portion.

DRYINUS. 447

The group of D. CHIRIQUENSIS.

Head asin D. melanocephalus ; prothorax scarcely so long as the mesothorax, quadrate

(but, if anything, longer than broad), flat above, the sides straight; parapsidal

furrows obsolete; metathoraxr with a rounded gradual slope.

Chiefly distinguished from the D. melanocephalus section by the obsolete parapsidal

furrows, the longer and straighter prothorax, and the radial nervure being almost obso-

lete from a little beyond the apex of the stigma. The antenne are missing from the

example of the single species I include in this group.

6. Dryinus chiriquensis. (Tab. XIX. fig. 9.)

Niger, mandibulis, basi ef apice abdominis pedibusque rufo-testaceis, geniculis, coxis anterioribus tarsisque

pallidis, apice femorum posticorum nigris. ¢.

Long. 5 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

Head wide, longitudinally striolate-reticulate; sparsely covered with white hair.

Prothorax somewhat strongly punctured and covered with long white hair; mesothorax

sparsely pilose, almost impunctate ; metathorax punctured, with six small upper and

three large lower are. Abdomen a little shorter than the thorax, shining, impunctate.

Wings in greater part hyaline; there is a narrow smoky line on the transverse basal

and humeral nervures, and a broad stripe at the stigma (which is white except at the

apex), and the apex is also slightly clouded ; the radial nervure does not extend much

beyond the stigma.

The group of D. ALBITARSIS.

Vertex not depressed ; occiput short, convex ; eyes parallel ; third joint of the antenne

shorter than the first and about one fourth longer than the second ; prothorax shorter

than the mesothorax.

7. Dryinus albitarsis. (Tab. XIX. fig. 10.)

Niger, ore, antennis, coxis, trochanteribus, femoribus tibiisque anticis rufo-testaceis, tarsis pallidis ; alis hya-

linis, fusco-bifasciatis, stigmate nigro, cum basi alba. <¢.

Long. fere 3 millim.

Hab. Guatemata, Panajachel 5000 feet (Champion).

Antenne stout, longer than the head and thorax united; almost glabrous. Head

finely rugosely punctured, sparsely clothed with short white hairs; eyes margined.

Prothorax rugosely punctured (more coarsely so than the head), the pronotum behind

not so strongly, and more shining than the rest; mesonotum aciculated; scutellum

shining, impunctate; metathorax longitudinally rugosely punctured, with a curved

448 HYMENOPTERA.

transverse keel where it bends downwards, and above this keel some longitudinal ones.

Abdomen shining, the base laterally obscure brownish. The hind coxe are, for the

greater part, black above; the middle femora are brownish beneath; the tips of the

tarsi are blackish. The wings are whitish-hyaline; the small fascia at the transverse

basal nervure is irregular, that at the stigma is broad, extends right across, and is of

equal breadth; the radial nervure does not extend much beyond the stigma.

Subfam. BETHY LIN.

This subfamily approaches very closely to the “ aculeate ” section of the Hymenoptera,

and has been by some authors (¢. g. Haliday) placed among them. The trochanters

have only one joint.

SCLERODERMA.

Sclerodermus, Latreille, Gen. Crust. et Ins. iv. p. 119 (1809).

Scleroderma (Klug), Westwood, Trans. Ent. Soc. Lond. ii. p. 164 (1839), and 1881, p. 117; S.

Saunders, Trans. Ent. Soc. Lond. 1881, p. 109.

Sclerochroa, Forster, Hymen. Stud. ii. p. 95 (1856).

The name Sclerochroa was substituted by Forster on account of Scleroderma being

preoccupied for a genus of fungi. Ido not, however, accept the rule that the same

name cannot be used in Botany and Zoology.

Scleroderma has a wide range over the globe.

1. Scleroderma soror.

Scleroderma soror, Westw. Trans. Ent. Soc. Lond. 1881, p. 128, t. 5. fig. 5°.

Hab. Mexico (Coffin 1).

APENESIA.

Apenesia, Westwood, Thes. Ent. Oxon. p. 170 (1874) ; Trans. Ent. Soc. Lond. 1881, p. 180.

Apenesia appears to differ chiefly from Scleroderma in having the tibia and tarsi

thickly spinose, these parts in Scleroderma being bare or but slightly pilose.

Four species have been described: two from the Malay region, one from the Amazons,

and another from Nicaragua.

1. Apenesia chontalica.

Apenesia chontalica, Westw. Trans. Ent. Soc. Lond. 1881, p. 181, t. 7. ff. 3, 3a-d’.

Hab. Nicaracua, Chontales! (Belt).

APENESIA.—EPYRIS. 449

2. Apenesia flavipes. (Tab. XIX. fig. 11, 2.)

Fulva, nitida, antennis pedibusque flavis. 9.

Long. 6 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

Differs from <A. chontalica in being 34 millim. longer; in having the abdomen as

long as the head and thorax united (in A. chontalica it is not much longer than the

thorax); in the base of the mesonotum being triangular and not curved laterally, the

sides being quite straight; and in the metathorax being narrowed in the middle and

not at the base. The tips of the mandibles are black; the basal two joints of the

anterior tarsi are sharply produced at the apex.

EPYRIS.

Epyris, Westwood, Lond. & Edinb. Phil. Mag. i. p. 129 (1832).

Epyris is numerously represented in the Neotropical region, and contains some (for

the group) large and striking species. It is but poorly represented in the Old World.

A. Prothorax short, the pronotum raised abruptly above the prosternum and broader

than long ; the lower discoidal cellule distinct ; head rugosely punctured.

1. Epyris rugifrons. (Tab. XIX. fig. 12.)

Niger, pilosus, capite prothoraceque rugosis, metanoto reticulato; alis fuscis. <.

Long. 10 millim.

Hab. Guatemaa, Las Mercedes 3000 feet, Cerro Zunil 4000 to 5000 feet (Champion).

Antenne as long as the thorax and abdomen united, densely covered with long white

hair; the basal joint as long as the third. Head strongly rugosely punctured, covered

with long fuscous hair; a small depressed impunctate space in front of the ocelli;

mandibles punctured. Prothorax rugosely punctured, covered with long fuscous hair ;

a broad transverse furrow at the apex of the pronotum. Mesonotum sparsely punctured

laterally, and bearing there some rather long fuscous hair ; parapsidal furrows complete.

Scutellum sparingly punctured, pilose. Metanotum irregularly keeled and reticulated ;

the top narrowed towards the apex (giving it a somewhat triangular shape); the apex

semiperpendicular, irregularly punctured or blistered. Abdomen elongate oval in

shape, shining, impunctate, the apex red and pilose. Legs densely covered with a

greyish pile, which is very close and stiff on the tibie and tarsi. Claws bifid.

BIOL. CENTR.-AMER., Hymenopt., February 1888. 3 MM

450 HYMENOPTERA.

2. Epyris coxalis.

Niger, capite punctato, scapo antennarum, coxis, trochanteribus femorumque basi albis; alis fuscis, apice

violaceis. <6.

Long. fere 9 millim.

Hab. Panama, Bugaba (Champion).

Antenne thick, densely pilose, the first joint a little longer than the third. Head

shining, covered with shallow widely separated punctures; antennal depressions deep

and wide ; mandibles almost impunctate. Thorax sparsely punctured, the punctures

very shallow. Parapsidal furrows not reaching to the scutellum ; the transverse furrow

in front of the latter wide and deep. Scutellum almost without punctures. Meta-

notum irregularly punctured and Dlistered; a stout keel runs down the centre and a

wide and deep furrow down either side; the apex with a moderate slope; the sides

transversely striated. Abdomen shining, the sides and ventral surface inclining to

piceous. Femora and tibie sparsely, the tarsi densely, pilose.

3. Epyris erythropoda. (Tab. XIX. fig. 14.)

Niger, capite rugoso, antennis, ore, mandibulis, pedibus abdominisque apice rufis; alis hyalinis, cum fascia

medio fumata; tegulis testaceis; coxis nigris. d.

Long. 10 millim.

Hab. Panama, Bugaba, Volcan de Chiriqui 3000 to 4000 feet (Champion).

Antenne shorter than the thorax; the scape bare, shining, curved, longer than the

third joint; the flagellum densely pilose, tapering perceptibly towards the apex; the

third joint somewhat longer than the fourth. Head not much broader than the meso-

thorax, rather long, sparsely covered with long fuscous hairs, rugosely punctured ; a

shining furrow in the centre between the eyes; antennal tubercles large, reddish, a

sharp projecting keel between them; mandibles with some large separated punctures,

shining, the teeth black; palpi rather long, pilose, testaceous. Pro- and mesothorax

bearing large punctures ; the sternum and pleure more strongly punctured than the

upper sides, except a shining impunctate space on the hinder part of the mesopleura;

scutellum shining, finely but not closely punctured. The base of the metanotum bears

some stout longitudinal keels ; the rest of the flat posterior part is strongly transversely

striolated, the two hinder parts being separated by a stout curved keel; the centre is

depressed ; the semiperpendicular apex is closely and strongly transversely punctured,

except at the extreme top, the latter being excavated and the centre hollowed; the

deep oblique depression at the base of the metapleure is shining and striated. Abdo-

men shining; the apex blunt, depressed in the centre, and very pilose, the hairs being

fulvous. Legs densely pilose. Wings: radial nervure curved at the base; the recur-

rent nervure very faint, almost obsolete.

EPYRIS. 451

B. Prothorax elongated, longer than broad, the pronotum not raised abruptly above the

prosternum ; the lower discoidal cellule usually obliterated ; head smooth or but

slightly punctured.

4. Epyris viridis. (Tab. XIX. fig. 16.)

Viridis, flagello antennarum abdomineque nigris, trochanteribus, tibiis tarsisque testaceis ; alis fumatis, apice

fusco-violaceis, stigmate nigro. @.

Long. 7 millim.

Hab. Guatemata, San Juan in Vera Paz (Champion).

Antenne stout ; the first joint as long as the following three joints united ; the second

joint a little longer than the third. Head shining, finely punctured; eyes large, not

reaching to the mandibles but near to the front ocellus, being situated more to the rear

than to the front. Pronotum finely aciculated, and bearing some scattered punctures,

the pleure and sternum impunctate. Mesonotum finely aciculated, without punctures ;

the parapsidal furrows complete, slightly converging towards the scutellum, narrow; a

deep elongate fovea on the mesopleure. Metanotum with five distinct keels down

the centre and another down the side, a keel round the top of the apex and another

down the centre of the latter; between the central keels it is transversely but rather

irregularly striolated; the sides and apex are finely transversely, the pleure longitudi-

nally, striolated. The apex of the abdomen is acutely pointed and brownish; the

segments at their point of junction are also of this colour.

As with most metallic-green species, the green runs into blue and coppery shades.

5. Epyris nitidiceps. (Tab. XIX. fig. 17.)

Niger, nitidus, capite fere punctato, antennis, mandibulis, pedibus abdominisque apice rufis; alis fumatis,

stigmate et nervis pallide testaceis. ¢ 9.

Long. 9,9 millim.; ¢, fere 6 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Antenne a little longer than the thorax; the scape bare; the flagellum shortly

pilose ; basal joint thickened, curved on the lower side, and as long as the following

three joints united ; the second and third joints subequal and a little shorter than the

fourth. Head shining, bearing fine scattered punctures. Mandibles finely punctured,

sparsely covered with glistening white hairs ; apical tooth blackish, acute ; opposite to

the latter are two short blunt teeth. Pro- and mesothorax shining, sparsely and very

finely punctured ; scutellum impunctate. Metanotum with five keels in the centre,

the central keels straight, the lateral ones more curved ; the keeled central portion is

transversely striated ; the apex is semiperpendicular; the sides are smooth, the central

part hollowed and transversely striated; the non-striated parts of the metathorax are

indistinctly aciculated. Abdomen shining. Legs (especially the femora) stout; the

tibiee and tarsi covered with a stiff bristle-like pile; tips of the tarsal joints blackish.

3MM 2

452 HYMENOPTERA.

The insect I treat as the male of the same species is similar to the female in colora-

tion and sculpture. ‘The flagellum is sparsely pilose, and the basal joint of the antenne

is (if anything) shorter than the third, the latter being longer than the fourth. ‘The

femora (particularly the hinder pair) incline to fuscous.

6. Epyris testaceipes. (Tab. XIX. fig. 18.)

Niger, sparse punctato, antennis basi late, tegulis, pedibus abdominisque apice testaceis; alis fere hyalinis,

apice fumatis. ¢ abdomine brunneo-testaceis.

Long. 6 millim.

Hab. Panama, Bugaba, Volcan de Chiriqui (Champion).

Antenne a little longer than the thorax; the first joint curved, longer than the

second and third joints united; the third joint longer than the fourth, and fully three

times the length of the second; joints 3-13 densely pilose. Head almost alutaceous,

covered with shallow scattered punctures; behind and laterally bearing some rather

long fuscous hairs; eyes large, reaching to the base of the mandibles and behind to the

front ocellus; mandibles finely punctured, reddish, sparsely covered with white hairs,

the teeth blackish. Pro- and mesothorax alutaceous, sparsely punctured, clothed with

scattered fuscous hairs. Prothorax above somewhat shorter than the mesothorax ;

dilated at the apex. Parapsidal furrows complete. There are no fovee at the base of

the scutellum ; the latter is more sparsely punctured than the mesonotum. Meta-

notum at the base and down the centre (except at the apex) irregularly reticulated and

with a keel down the middle; the sides and apex (which has a semiperpendicular

slope) finely rugose. Abdomen broader than the thorax; the sides covered with pale

hair. Wings: radial nervure broadly curved; second discoidal cellule open at the

apex. | .

Not unlike the male of E. nitidiceps; but that differs from the same sex of E. testa-

ceipes in having fover at the base of the scutellum, in the parapsidal furrows being

deeper, wider, and not reaching to the base of the mesonotum, in the eyes being much

smaller and not reaching to the ocelli, in the legs being reddish (not testaceous), in the

apex of the metanotum not being rugose, and in the antenne being longer.

7. Epyris multicarinatus. (Tab. XIX. fig. 13.)

Niger, basi et apice femorum, apice coxarum, trochanteribus, tibiis tarsisque anticis, ore mandibulisque rufis ;

capite fere punctato ; metanoto striolato; alis fumatis.

Long. 6 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 4000 feet (Champion).

First joint of the antennz longer than the second, third, and fourth joints united ;

the latter a little longer than the second and blackish at the apex (the other joints

absent). Head and thorax shining, almost impunctate; eyes large, reaching nearly

to the mandibles, but not to the ocelli; the latter are placed quite close to the

EPYRIS. 453

occiput ; mandibles finely punctured. Prothorax as long as the mesothorax, dilated

behind. Parapsidal furrows narrow, shallow, complete. Scutellar foves large, deep.

Metanotum with seven stout keels down the centre; the sides shining, impunctate ;

the apex almost perpendicular. Abdomen acute at the apex, shining; the fourth and

following segments testaceous.

8. Epyris bugabensis. (Tab. XIX. fig. 19.)

Niger, basi antennarum rufa, tegulis pedibusque pallide testaceis, coxis fere albis; alis hyalinis, apice fumatis,

nervis stigmateque fusco-testaceis.

Long. 5 millim.

Hab. Panama, Bugaba (Chanpion).

Antenne as long as the head and thorax united; the flagellum somewhat densely

covered with long hairs; the first joint scarcely longer than the second and third joints

united; the latter longer than the fourth and four times the length of the second.

Head shining, sparsely punctured; eyes scarcely reaching to the base of the mandibles

nor to the ocelli; mandibles finely punctured. Pro- and mesothorax shining, impunc-

tate, the former shorter than the latter. Paraspidal furrows moderately wide, not

reaching to the scutellum ; the latter is without distinct foveee and impunctate. Meta-

thorax longer than the mesothorax; the metanotum is transversely striolated, and with

two stout keels down the centre; the apex is strongly aciculated. Apex of the abdo-

men truncated, pilose. The femora (especially the anterior pair) are of a redder hue

than the tibia; the hinder pair are fuscous above and beneath.

9, Epyris guatemalensis, (Tab. XIX. fig. 20.) |

Niger, sparse punctato, flagello antennarum testaceo, tibiis tarsisque piceis ; alis fere hyalinis, nervis stigma-

teque testaceis. @.

Long. 4 millim.

Hab. GuatTemaLa, near the city (Champion).

Antenne as long as the thorax; the first joint strongly curved, as long as the

following two joints united; the second and third joints subequal. Head flat, narrower

than the thorax, obscurely alutaceous; eyes oval, a little longer than the basal joint of

the antenna, situated close to the mandibles and before the middle. Pro- and meso-

notum shining, the former longer than the latter. Parapsidal furrows reaching to the

scutellum, but not to the base of the mesonotum. Scutellar fovee shallow, round.

Metanotum finely longitudinally rugose, the central part more strongly so than the

lateral, the more rugose central part narrowed towards the apex; the apex semiper-

pendicular, finely rugose. Abdomen shorter than the thorax, shining, the apex

obscure piceous.

454 HYMENOPTERA.

PARASTEROLA.

Parasierola, Cameron, Trans. Ent. Soc. Lond. 1883, p. 197.

This genus agrees with [sobrachium in not having parapsidal furrows; but differs

in having a complete upper discoidal cellule, the lower one being entirely absent.

There is a distinct prostigma, in which point it differs from Hpyris. Its nearest allies

are Sierola and Goniozus; the former is readily known from Parasierola by the com-

plete radial cellule, the latter by the incomplete upper discoidal cellule.

So far as at present known, the genus is confined to America.

1. Parasierola lata, (Tab. XIX. fig. 21.)

Nigra, nitida, capite sparse punctato, ore, trophi, tegulis, antennis pedibusque rufo-testaceis; alis fuscis, basi

fumatis, nervis fusco-testaceis, stigmate nigro. 9.

Long. 5 millim.

Hab. Panama, Bugaba (Champion).

Antenne scarcely so long as the thorax; the first joint enlarged, a little shorter than

joints 2-4 united; the third joint double the length of the second and somewhat

longer than the fourth; the intermediate joints are broader than long; the thirteenth

is one half longer than the preceding. Head large, scarcely so wide as the thorax,

almost shining, covered with large scattered punctures; transverse behind; a narrow

keel runs down from the centre to the mouth; eyes oblong, situated in the middle.

Thorax shining, impunctate, except the metanotum at the sides, the latter parts being

shagreened ; a deep, wide, transverse furrow at the base of the scutellum. Abdomen

as long as the thorax, becoming gradually narrowed to the apex; the segments unequal.

Wings: the upper discoidal cellule is longer than broad; the lower nervure straight ;

the upper nervure curved; the basal nervure is the larger.

2. Parasierola opaca. (Tab. XIX. fig. 23.)

Nigra, opaca, antennis, mandibulis pedibusque rufo-testaceis, femoribus posticis nigro-lineatis; alis hyalinis,

Long. 4 millim.

_ Hab. Guatemata, Mirandilla 1700 feet (Champion).

First joint of the antenne as long as the second and third joints united ; the second, -

third, and fourth joints subequal. Head slightly broader than the mesothorax, opaque,

alutaceous, with scattered punctures; clypeus carinate; eyes oblong. Prothorax

broader than long, if anything shorter than the mesothorax, alutaceous, almost shining.

Scutellum more shining than the mesonotum ; its transverse furrow shallow, indistinct.

Metanotum opaque, shagreened ; the centre raised into an elongated triangle; the apex

shining, semiperpendicular, not separated from the flat basal part. Abdomen longer

PARASIEROLA.—MESITIUS. 455

and not much narrower than the thorax. The base of the hind coxe is black; the

hind femora are broadly lined above and beneath with black. Wings: the discoidal

cellule is rounded at the apex, where it is double the width of the base; the lower side

is longer than the upper.

3. Parasierola palliditarsis. (Tab. XIX. fig. 22.)

Nigra, antennis articulis 1°-9™ rufo-testaceis, apice coxarum, trochanteribus, geniculis, tibiis tarsisque albo-

testaceis, tegulis fuscis ; alis fumato-hyalinis, nervis testaceis, stigmate fusco. @.

- Long. 4 millim.

Hab. Guatemata, Mirandilla 1700 feet (Champion).

Head alutaceous, semiopaque; the clypeus carinate; eyes large, oblong, situated

nearer the front than behind ; occiput slightly convex. First joint of the antenne longer

than the following two joints united ; the third joint a little longer and thinner than the

second and double the length of the fourth. Mandibles piceous. Prothorax longer

than broad, longer than the mesothorax, alutaceous; mesonotum more shining,

shagreened ; scutellum shining, impunctate or nearly so, the transverse furrow at its

base shallow ; metanotum finely rugose, the centre shining and impunctate. Abdomen

as long as and broader than the thorax, becoming narrower from the second segment ;

the segments at their points of junction are testaceous. Wings: the upper discoidal

cellule is truncated at the base and apex, of nearly equal length above and beneath ;

the upper and lower nervures but slightly curved.

MESITIUS.

Mesitius, Spinola, Mem. Accad. Torino, ser. 2, xiii. p. 72 (1858).

Isobrachium, Forster, Hymen. Stud. 11. p. 96 (1856) ; Marshall, Ent. Monthly Mag. x. p. 222 (1874).

Westwood (Trans. Ent. Soc. Lond. 1881, p. 125) refers Heterocelia, Dahlbom (Hym.

Europ. ii., Chrysidide, p. 21), to Mesttius; but as Heterocelia (supposing that it agrees

with it in other respects) has complete parapsidal furrows, I am rather doubtful if it

can be regarded as synonymous. ‘The wings are very much as in Epyris, but the hind

pair are less developed or much more indistinct.

The genus is European, but has not, I think, been recorded previously from any

part of America.

“

1. Mesitius longicollis. (Tab. XIX. fig. 34)

Niger, opacus, metanoto striolato, antennis, trochanteribus, femoribus ex parte, tibiis tarsisque rufo-testaceis ;

alis hyalinis, nervis pallide testaceis. 9.

Long. fere 5 millim.

Hab. Mexico (Sal/é).

Antenne scarcely so long as the thorax; the first joint curved, nearly as long as the

456 HYMENOPTERA.

‘following three joints united ; the second and third joints subequal; the other joints

nearly equal in length. Head and thorax opaque, rather densely pilose, finely punc-

tured, alutaceous; the metanotum transversely striated, and with five keels down the

centre; the metapleure finely rugose. Head elongated, as broad as the thorax; the

occiput margined, scarcely transverse; eyes small, oval, situated in the middle.

Prothorax longer than the mesothorax, becoming considerably broader towards the

apex. Scutellum with some minute shallow punctures, narrowed towards the

apex; the depression at its base wide and deep. Metathorax longer than the pro-

thorax; the apex margined at the top, and with a slight slope. Abdomen shorter

than the thorax, shining, impunctate, pilose towards the apex ; the segments brownish

at their point of junction. ‘The mandibles are piceous-red ; the tegule pale testaceous.

The anterior and posterior femora are more or less blackish, the intermediate femora

marked with black behind. |

CALYOZA.

Calyoza, Westwood, Trans. Ent. Soc. Lond. ii. p. 56, t. 7. figg. 11 a—c (1837) ; Thes. Ent. Oxon.

p. 157 (1874).

I am exceedingly doubtful if the species described below can be referred to Calyoza

(an African genus); but having only one sex I do not think it is advisable to form a

new genus for its reception.

1. Calyoza (?) westwoodi. (Tab. XIX. fig. 25, ¢.)

Capite, pro- et mesothorace nigro-ceruleis, metathorace abdomineque nigris, antennis fuscis, tibiis tarsisque

testaceis ; alis fere hyalinis, nervis pallide testaceis. d¢.

Long. fere 4 millim.

Hab. Panama, Bugaba (Champion).

Antenne apparently 13-jointed ; the basal joint more than double the length of the

second; the third joint not half the length of the second; the fourth joint nearly as

long as the first, produced into a sharp point at the apex; the fifth joint produced

still more, but not forming a ramus; the succeeding joints each with a rather long

ramus, the rami gradually becoming shorter towards the apex. Mandibles large,

minutely toothed, the apical tooth not much larger than the others. Front between

the antenne acutely carinate ; eyes large, indistinctly margined, situated in the middle ;

ocelliin a triangle. Prothorax large, transverse, quadrate, wider than long; a distinct

keel in front and along the edge of the pronotum and above the sternum. Parapsidal

furrows complete, sinuated. There is a large fovea on either side of the base of the

scutellum, the two foves being united by a shallow furrow. Wings with the median

and submedian cellules complete; the radial cellule open at the fore margin; the other

cellules obsolete; there is an indistinct prostigma.

CALYOZA.—AMISEGA. A457

Head, pro- and mesothorax, with the scutellum, closely and finely punctured,

shining. Metanotum very shining, finely transversely striated, and with three longi-

tudinal keels in the middle; the central keel straight, the lateral ones curved inwardly ;

there are two transverse keels across them near the centre; the apex is almost perpen-

dicular, keeled at the top, and with a keel down the middle. Abdomen shining, the

base hollowed in the middle. The base of the antenne and the apical six joints are

obscure testaceous ; the other joints fuscous-black. The coxe and the greater part of

the femora are black; the four hinder tibie are in great part fuscous-black. The front

legs are stout, the femora especially; the middle legs are more slender than the

posterior. The anterior spurs are long, curved, and slender.

Fam. CHRYSIDID.

Comparatively few species of this elegant family are known from the Neotropical

region. The North-American Chrysidide have been monographed by Aaron (Trans.

Am. Ent. Soc. xii. pp. 209-248); this author divides the family into four subfamilies,

all of which are represented in our fauna.

Subfam. COUHEPTINA.

Cleptes is the only genus included hitherto in this subfamily; but the characters

given for the group by Aaron will have to be altered if Amisega is to be included in it.

AMISEGA.

Antenne 13-jointed, inserted immediately over the mouth. Eyes large, parallel, reaching near to the base of

the mandibles, and almost to the back of the head. Prothorax quadrate, broader than long, slightly

narrowed in front and shorter than the mesothorax. Parapsidal furrows complete. Postscutellum simple,

not projecting. Metathorax and median segment with a gradual slope to the apex, and without teeth or

projections of any kind; a margined furrow runs down the centre and-on either side of the metanotum.

Abdomen with four segments; the basal two segments large and subequal, the apical segment small.

Marginal cellule elongated, complete.

This genus agrees with Cleptes in having the face convex, without an antennal groove,

and in the form of the abdomen; but it differs in having the prothorax broader than

long and not much narrowed in front, as well as being shorter than the mesothorax, and

in having the metathorax rounded and not angled laterally.

I include in Amisega a single species from the State of Panama.

1. Amisega cuprifrons. (Tab. XX. figg. 2, 2a.)

Viridis, antennis, abdomine pedibusque nigro-ceruleis, capite cupreo ; capite, pro- mesothoraceque punctatis ;

alis fumatis.

Long. 9 millim.

Hab. Panama, Bugaba (Champion).

Head strongly punctured, sparsely covered with long black hairs. Pronotum more

BIOL. CENTR.-AMER., Hymenopt., April 1888. 3 NN

458 HYMENOPTERA.

strongly and coarsely punctured ; the prosternum shining, obscurely punctured. Meso-

notum not so strongly punctured as the pronotum, the centre more finely than the sides ;

mesopleure and sternum coarsely punctured. Metanotum almost impunctate, except

at the sides; median segment with scattered, shallow, indistinct punctures; meta-

pleure excavated, impunctate. Abdomen glabrous above; the ventral surface (espe-

cially at the apex) bearing long black hair and finely punctured; the upper surface

obsoletely punctured. Legs stout, covered with pale hair, which is longest on the

coxe; the latter are punctured. The pro- and mesothorax have coppery tints; the

metathorax has a decided bluish tinge.

Subfam. ELAMPINA.

Seven genera are recorded by Aaron from North America as belonging to this sub-

family ; but three only are known to me from our region.

NOTOZUS.

Notozus, Forster, Verh. Ver. pr. Rheinl. x. p. 331 (1853) ; Aaron, Trans. Am. Ent. Soc. xi. p. 217

(1885).

Kight North-American species of this genus are known.

1. Notozus nitidus. (Tab. XX. figg. 3, 8a.)

Notozus nitidus, Aaron, Trans. Am. Ent. Soc. xi. p. 218°.

Hab. Norra America, Montana and California 1.—Mexico, Presidio (Forrer).

HEDYCHRUM.

Hedychrum, Latreille, Hist. Nat. Crust. et Ins. iii. p. 317 (1802) ; Aaron, Trans. Am. Ent. Soc. xii.

p- 222 (1885).

A widely distributed genus.

1. Hedychrum violaceum.

Hedychrum violaceum, Brullé, Hist. Nat. Ins. Hymén. iv. p. 51; Norton, Trans. Am. Ent. Soc. vii.

p- 288; Aaron, Trans. Am. Ent. Soc. xii. p. 223°.

Hedychrum asperum, Brullé, Hist. Nat. Ins. Hymén. iv. p.52; Norton, Trans, Am. Ent. Soc. vii.

p- 238.

Hedychrum wiltii, Cresson, Proc. Ent. Soc. Phil. iv. p. 305 ; Norton, Trans. Am. Ent. Soc. vii. p. 237.

Hedychrum louisiane, Norton, Trans. Am. Ent. Soc. vii. p. 237.

Hab. Norta America, United States 4, generally distributed.—MEexico 1.

According to Aaron this is a very variable species.

HEDYCHRIDIUM.

Hedychridium, Abeille de Perrin, Ann, Soc. Linn. de Lyon, xxxvi. p.85 (1879) ; Aaron, Trans. Am.

Ent. Soc. xii. p. 221 (1885).

This genus (or subgenus) merely differs from Hedychrum in the claws having a small

HEDYCHRIDIUM. . 459

perpendicular tooth in the middle, this being absent in Hedychrum; the latter has the

claws cleft at the apex.

1. Hedychridium cressoni.

Hedychrum cressoni, Norton, Trans. Am. Ent. Soc. vii. p. 2397.

Hab. Mexico}.

2. Hedychridium guatemalense. (Tab. XX. figg. 4, 4a.)

Green, with bluish and golden reflections. Head and thorax coarsely rugosely punc-

tured, the scutellum and metanotum more strongly than the mesonotum; the central

part of the metanotum narrowed towards the apex ; the sides of this central part with

a distinct margin, and raised above the edges of the metanotum, which are roughened

by irregular strie, and not coarsely punctured; the sides project at the apex into an

acute triangular projection; the mesopleure are coarsely rugosely punctured; the

metapleure are deeply excavated, smooth, shining, and impunctate. Abdomen shining ;

the base concave; the first and second segments are closely punctured; the third

segment is more strongly punctured, especially behind, and is depressed round the

extreme apex ; the latter is slightly incised in the middle; the second segment is large,

bluish in the middle and at the base; the ventral surface is sparsely punctured, and

keeled down the middle. The legs are sparsely covered with rather long white hair ;

the hind coxe are finely punctured; the hind tibie are grooved and rather rough on

the outer side; the apical joints of the tarsi are blackish; the claws have a single

median tooth, much smaller than the terminal. The front is moderately hollowed,

keeled down the centre and transversely striated. The mandibles are black. Looked

at from above the head in front is transverse and nearly so behind; the ocelli are placed

almost in the centre.

Length 9 millim.

Hab. Guatemaa, Zapote, Panzos (Champion).

3. Hedychridium miliare. (Tab. XX. figg. 5, 5a.)

Head concave in front and behind; the front deeply excavated, the excavation

reaching near to the ocelli, and shining; at the top smooth, the lower half transversely

striated and keeled down the centre; mandibles and palpi brownish; the ocelli are

placed nearer the frontal excavation than the occiput. The head and pronotum are

rugosely punctured, the mesonotum much more strongly so; the scutellum, meso-

pleuree, and metanotum are still more strongly punctured ; the pro- and metapleure are

deeply excavated, smooth, and shining. The sides of the metathorax at the apex project

into a blunt, shining, impunctate, knob-like point. Abdomen closely punctured, the

sides of the first and third segments more strongly than the second (especially the latter

3 NN 2

460 HYMENOPTERA.

towards the apex); the third segment has a short, shining, impunctate furrow immediately

before the apex in the centre; the ventral surface is shining and punctured, but not

strongly so. The hind coxe and femora are punctured; the four hind tibie are

furrowed and bear some large scattered punctures; the apical joints of the tarsi are

brownish.

Length 8 millim.

Hab. Guatemata, San Gerénimo (Champion).

A smaller insect than H. guatemalense, and easily known from it by the apex of the

abdomen not being notched, and by its having a short, broad, and deep furrow in the

centre. In both species the postscutellum is as in H. dimidiatwm (Say) and H. viride

(Cresson); in all four there is a triangular punctured area below the postscutellum.

Subfam. CHRYSIDINAE.

Of this subfamily only two American genera are known—Chrysis and Stilbum. The

latter is American on the authority of Aaron, who (Trans. Am. Ent. Soc. xi. p. 243)

records S. amethystinum (Fabr.) from Ontario, a species known from the Palearctic,

Oriental, and Australian regions.

CHRYSIS.

Chrysis, Linnzus, Syst. Nat. ed. xii. i. p. 947 (1767).

The most extensive genus of Chrysidide. Forty North-American species are known,

and many inhabit the Neotropical region. It has a wide range over the Old World.

i. Apical margin of the third abdominal segment entire.

1. Chrysis mexicana. (Tab. XX. figg. 10, 10a.) |

Dull emerald-green, with bluish tints on the legs and thorax ; broad, obovate, covered

densely with a moderately long fuscous pubescence. Head, pro- and mesonotum closely

and uniformly punctured; metanotum with the punctures larger, more irregular, and

more widely separated ; pleuree with the punctures still larger, and running into reti-

culations; basin of face not very deeply excavated, transversely striated. Lateral

margin of metathorax acutely triangularly pointed, punctured. Abdomen with the

first and second segments uniformly covered with shallow, clearly separated punctures ;

the third segment more strongly punctured; the base of the first segment almost trans-

verse. Apical margin of the third segment rounded (but not forming an arc of a circle,

not being broad enough), entire, the base not angled; the apex without pits, but with

a distinct margin, in front of which there is a narrow groove. Antenne black, the

CHRYSIS. 461

scape metallic green. Legs green, punctured, covered with long fuscous hair; the

tarsi black, the spurs pale. Wings smoky, somewhat paler at the base.

Length 8 millim.

Hab. Mexico, Zacatecas city (Hoge).

Two specimens from Presidio (Forrer) apparently also belong to this species. They

are smaller (scarcely 7 millim.), and have the abdomen more strongly punctured, duller,

and with scarcely any blue tints; but otherwise do not differ appreciably.

2. Chrysis sonorensis. (Tab. XX. figg. 9, 9a.)

Green, with cobalt-blue spots, the head with brassy tints; narrowish, linear; closely

and uniformly punctured, but if anything more strongly on the head, pro- and meta-

thorax; the abdomen not so strongly and more closely punctured than the thorax, the

third segment with a coarser punctuation than the second. Basin of face with a very

shallow excavation, punctured. Eyes small, oblong. Lateral angles of the metathorax

not projecting much, and not outwardly, the projection not reaching to the apex of the

metathorax, which is rounded inwardly between the apex of the projection and the

centre. Abdomen longer than the thorax, the base scarcely excavated; the apex of the

third segment raised, projecting upwards (especially in the centre), broadly, but not

deeply, retreating backwards in the middle; the eight distinct fovee are large, longer

than broad, and moderately deep in the centre, becoming ill-defined laterally; the third

segment is depressed somewhat broadly at the base, broadly raised in front of the fovee ;

the fovex-bearing part of the segment is distinctly narrower than the rest of the segment.

The pubescence is long, sparse, and fuscous. Antenne green, black towards the apex.

Legs green, with blue tints, and covered with pale hair; tarsi black. Wings clear

hyaline, scarcely infuscated towards the base.

Length 8 millim.

Hab. Mexico, Northern Sonora (Morrison).

Closely allied to C. tota, Aaron (olim integra, Cresson, nec Fabr.); but the latter is

longer (10-12 millim.), and has not the basin of the face excavated, the eyes “ nearly

circular,” the posterior angles of the metathorax divergent, and the foveee much smaller

and round.

ii. Apical margin of the third abdominal segment notched in the middle.

8. Chrysis quadri-tuberculata. (Tab. XX. figg. 7, 7a.)

Green, with slight bluish reflections; the head and thorax covered with rather long

fuscous hair; the abdomen with a short pale pubescence on the base and apex, the

second segment being almost glabrous. Head and thorax coarsely and uniformly

462 HYMENOPTERA.

punctured ; the abdomen with the punctuation much less coriaceous, more scattered,

and shallower. Basin of face shining, transversely striated ; the sides densely covered

with white hair. There is a transverse keel above the face, the keel being prolonged

in a half-circle so as to enclose the lower ocellus. Above the ocelli are four large,

shining, impunctate tubercles ; the inner pair blue, and nearer each other than are the

lateral ones from them. The posterior lobes of the metathorax large, coarsely punc-

tured, and divergent. Abdomen a little longer than the thorax; the third segment

notched and raised in the middle, projecting on either side of the notch into a broad ,

distinctly separated lobe, the notch wider than the lobes, the latter shining and im-

punctate; the foveal groove wide and deep ; the fovez large, deep, blue, roundish, and

closely set, although few in number. Antenne green, black at the apex. Tarsi

blackish. Wings hyaline, slightly infuscated in front.

Length 8 millim.

Hab. Guatemaa, Capetillo (Champion).

A stout and broad insect. The peculiar tubercles on the vertex clearly ally it to

C. faceta, Aaron, from Colorado; but that species has the abdomen metallic scarlet

and gold, with ruby reflections, forming a striking contrast to the colour of the thorax.

ill. Apical margin of the third abdominal segment with three teeth.

4, Chrysis parvula. (Tab. XX. figg. 6, 6 a.) |

Chrysis parvula, Fabr. Syst. Piez. p.176; Dahlbom, Hymen. Eur. ii. p. 191, t. 10. f.106; Norton,

Trans. Am. Ent. Soc. vii. p. 242; Aaron, Trans. Am. Ent. Soc. xii. p. 231, t. 8. ff. 46 & 477.

Chrysis carinata, Say, Ann. Macl. Lye. i. p. 82; Complete Writings, i. p. 384.

Chrysis tridens, Lep. de St.-Farg. & Serv. Encycl. x. p. 495 (Pyria) ; Brullé, Hist. Nat. Ins. Hymén.

iv. p. 46.

Chrysis mucronata, Brullé, Hist. Nat. Ins. Hymén. iv. p. 45; Norton, Trans. Am. Ent. Soc. vii.

p. 242.

Chrysis 3-dentata, Dahlbom, Dispos. Hymen. p. 15.

Chrysis virens, Cresson, Proc. Ent. Soc. Phil. iv. p. 809.

Hab. Norta America, United States 1.—Mexico}!, Northern Sonora (Morrison),

Presidio (forrer); GuatemMata, El Reposo 800 feet, San Gerdénimo (Champion);

Nicaragua, Chontales (Janson); Panama (Boucard).—Sovra America, Brazil.

A widely distributed and variable species.

5. Chrysis selenia.

Chrysis selenia, Costa, Ann. del Mus. Zool. del Univ. di Napoli (Anno ii. 1862), 1864, p. 67,

footnote no. 47,

“ C. angustata, ano tridentato, scutello conico, capite thoraceque crasse punctatis; viridis, abdominis dorsi

segmento primo macula minuta indeterminata, secundo margine baseos coarctato maculaque postica

transverse semilunata, tertio margine baseos in lineam mediam posterius continuato margineque postico

CHRYSIS. 463

obscure violaceis ; segmenti ultimi serie ante-apicali a carina in dentem apicalem medium terminata divisa,

margine apicali polito: subtus viridi-auratus; antennis, scapo et flagelli basi exceptis, fuscis.—Longit.

mill. 8.”

“Specie intermedia tra la lunigera ela parvula: riunendo le macchie dorsali del secondo e terzo anello addo-

minale della prima specie, con i margini basilari degli stessi anelli strangolati e coloriti come nella

seconda.”

Hab. Mexico}.

iv. Apical margin of the third abdominal segment with four teeth.

* The third abdominal segment without fovee or a furrow before the teeth.

6. Chrysis fasciata. —

Chrysis fasciata, Fabr. Syst. Piez. p. 175; Dahlbom, Hym. Eur. ii. p. 197.

Chrysis punctatissima, Spinola, Ann. Soc. Ent. Fr. 1840, p. 200’.

Hab. Mexico, Ventanas 2000 feet (Forrer); GuatmemaLa, San Gerdnimo (Champion) ;

Panama (Boucard).—SovutH America, Cayenne, Brazil}.

The specimen from Guatemala is brilliant emerald-green, the abdomen green with a

decided bluish tinge; and, if anything, the punctuation seems stronger than usual.

7. Chrysis montezuma.

Dark purple, with brassy and greenish reflections. Head and thorax coarsely and

strongly punctured, the punctures on the scutellum longer, rounded, and more widely

separated; the second and third segments of the abdomen uniformly punctured; the

first segment with the punctures larger and more widely separated. The sides of the

basin of the face are striated and covered with longish white hair; the centre is almost

impunctate. The third abdominal segment is depressed transversely near the base ;

there is no depression nor fovee before the apical teeth, which are large, acutely

triangular, and of nearly uniform size. Antenne black, the scape dull bronzy. Wings

hyaline, slightly infuscated, the stigma and nervures pale fuscous.

Length 11 millim.

Hab. Mexico, Valladolid in Yucatan (Gawmer).

“Besides the differences in coloration this species is considerably broader and stouter

than C. fasciata; and the basal segment of the abdomen is not so strongly trilobed.

The third segment becomes gradually narrowed towards the apex, which is not quite

so truncated as in C. fasciata; the depression at its base is more sharply defined, and

the punctuation is deeper and stronger; the teeth are shorter and the incisure narrower.

The separation between the pro-, meso-, and metathorax is more clearly marked, espe-

cially if looked at from the side.

464 HYMENOPTERA.

An example of what is perhaps the same species agrees with the type in all tangible _

points, except that the apex of the third abdominal segment is depressed, the depression

separating the tooth-bearing part from the rest of the segment, and that this part is

almost impunctate.

** The third abdominal segment with fovew and a furrow.

8. Chrysis cerulans. (Tab. XX. fig. 11,112.)

Chrysis cerulans, Fabr. Syst. Piez. p. 173; Dahlbom, Hymen. Eur. ii. p. 212, t. 11.110; Rados-

kovsky, Hore Soc. Ent. Ross. iii. p. 305, t.4. f.19; Brullé, Hist. Nat. Ins. Hymén. iv. p. 38;

Aaron, Trans. Am. Ent. Soc. xii. p. 236°.

Chrysis nitidula, Brullé, Hist. Nat. Ins. Hymén. iv. p. 37.

Chrysis bella, Cresson, Proc. Ent. Soc. Phil. iv. p. 312.

Hab. Norrn America, United States!.—Mexico, Northern Sonora (Morrison), Presidio

(Forrer); Guatumaua, San Gerénimo, Paraiso (Champion); Costa Rica, Cache (Rogers) ;

Panama (Boucard), Volcan de Chiriqui 2000 to 3000 feet (Champion).—SoutH AMERICA,

Cayenne.

A variable species in colour, size, and sculpture, and also in the form of the apical

teeth.

9. Chrysis panamensis. (Tab. XX. figg. 8, 84.)

Brilliant emerald-green; a band across the mesonotum, a mark on the metanotum,

and two broad bands, united by a longitudinal one, on the second abdominal segment,

violet. Head and thorax coarsely and uniformly punctured; basal segment of the

abdomen covered with large, round, clearly separated punctures; the other segments

with the punctures much smaller and shallower, but stronger on the apex of the third

Basin of face punctured, but very slightly in the centre ; above it the vertex is reticulated,

and there is a f\-shaped keel which encloses the lower ocellus. The teeth on the third

abdominal segment are short and triangular; the incisions broad and shallow; the

fovee are placed in a shallow narrow groove; there are two large central fovee, the

others being small and indistinct; in front of the groove the segment bears some small,

scattered, shallow punctures. The base of the abdomen has three shallow depressions.

The apex of the metathorax in the middle projects into a blunt, curved, nipple-like

projection, above which the metanotum is raised.

Length 12 millim.

Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion).

A longer and narrower (compared with the length) insect than C. cwrulans, and

inter alia readily known from it by the projecting middle of the metathorax. The wings,

moreover, are not so dark, especially at the base ; and the sculpture is stronger.

CHRYSIS. 465

10. Chrysis rastellum.

Chrysis rastellum, Brullé, Nat. Hist. Ins. Hymeén. iv. p. 32’.

Hab. Mexico}.

v. Apical margin of the third abdominal segment with six teeth.

11. Chrysis pilifrons. (Tab. XX. figg. 13, 13a.)

Head and thorax dark green, mixed with dark purple; the abdomen of a brighter

green, marked with broad purplish stripes across the segments. Head and thorax

uniformly covered with large (comparatively) round punctures; the pleuree with much

deeper punctures ; first abdominal segment with the punctures larger and more widely

separated than on the second and third segments. Basin of face punctured laterally,

the middle almost impunctate; the sides covered with long white hair. The rest of

the head and thorax sparsely covered with long fuscous hair; the abdomen glabrous,

except towards the apex. There is a -—-shaped keel below the ocelli. The base of

the first abdominal segment is broadly, but not deeply, excavated (not divided into

three lobes). The teeth on the third segment are equal in size, and almost equally

distant one from another; the lateral margin is straight, except that it bulges out at

the first tooth ; the pits are indistinct, forming mere ill-defined depressions in the furrow,

which is broad and moderately deep; the apex of the segment is impunctate or nearly

so. Antenne black, the basal three joints green. Wings infuscated, lighter towards

the apex.

Length 12 millim.

Hab. Panama (Boucard).

12. Chrysis proxima. (Tab. XX. figg. 12, 12a.)

Similar in colour and sculpture to the preceding (C. pilifrons), but smaller (8-9

millim.), The basin of the face much more densely covered with white hair (only the

extreme centre being bare); there is no transverse keel above it, but a M-shaped keel

starts from near the eyes above the depression and encloses the lower ocellus. The

lateral margin of the third abdominal segment has a distinct curve, and the outermost

tooth is not placed at the extreme edge, as in C. pilifrons, but at a little distance from

it; the teeth are smaller and more irregularly placed; the incisions are unequal—the

central is the largest; there is no distinct groove or pits, although they are very faintly

indicated ; and the base of the abdomen is distinctly trilobate.

Hab. Panama (Boucard).

BIOL. CENTR.-AMER., Hymenopt., April 1888. 3 00

466 . HYMENOPTERA.

Subfam. PARNOPIN.

A very distinct group, readily known by the elongated trophi. Two North-American

species have been described.

PARNOPES.

Parnopes, Fabricius, Syst. Piez. p. 177 (1804). |

1. Parnopes fulvicornis. (Tab. XX. figg. 1, 1a.)

Viridis, rugoso-punctata, flagello antennarum, tegulis, postscutello, geniculis, femoribus, tibiis, tarsis abdo-

minisque apice, fulvis; alis hyalinis, apice fere fumatis. .

Long. 9 millim.’

Hab. Mexico, Presidio (Forrer).

_ Face densely covered with white hair, the hair concealing the sculpture; vertex

strongly punctured; clypeus dull fulvous ; mandibles black at the base and apex, the

middle part fulvous. Thorax much more strongly punctured than the head; the

punctuation on the centre of the mesonotum less strong than on the pronotum and

scutellum; mesopleure densely covered with white hair; postscutellum deeply and

roundly incised at the apex ; the sides almost truncated ; the sides of the scutellum and

postscutellum densely pilose. Abdomen strongly punctured (but less so than the

thorax) ; the segments depressed at the apex, this part being fulvous and covered with

white pile (the pile longer and denser at the sides); apical segment with an elongated,

deep wide fovea on either side, the fovee being separated by a partition which is

depressed in the centre, and does not reach the level of the part of the segment behind

it; the extreme apex spinose, the centre bearing two spines which are longer and

thicker than the others; the ventral surface scarcely punctured, dull fulvous, darkest

in the centre. Legs covered with a white pile. The head and thorax have a coppery

tint, and the abdomen a bluish tinge. The parapsidal furrows are scarcely indicated ;

the pronotum has a depression in the middle, especially noticeable in front.

P. edwardsii, Cresson, from California and Vancouver, has the apex of the post-

scutellum entire; and P. chrysoprasina, Smith, from North Carolina, has the apex of

the postscutellum incised. The latter differs from P. fulvicornis in having the post-

scutellum and the abdomen green, and the wings fulvo-hyaline; and no mention is

made in the description of the white pubescence so characteristic of P. fulvicornis.

SUPPLEMENT.

Tue following species of Tenthredinide, Cynipide, Figitide, Chalcidide, Trigonalide,

and Proctotrupide have been described or noticed by me since the preceding pages

were published *. Some errata in the published text and plates are also corrected

here. |

STRONGYLOGASTER (p. 4).

11. Strongylogaster melanostoma. —

Strongylogaster melanosoma, antea, p. 10.

The specific name of this species is incorrectly printed on p. 10.

16. Strongylogaster leucostoma.

Strongylogaster leucosoma, antea, p. 12.

29. Strongylogaster rogenhoferi.

Strongylogaster rogenhoferi, Camer. Trans. Ent. Soc. Lond. 1884, p. 483’.

Hab. Mxxico, Orizaba (Bilimek, in Mus. Vind. Ces. 1).

30. Strongylogaster fumipennis. (Tab. XX. fig. 15.)

_ Strongylogaster fumipennis, Camer. Trans. Ent. Soc. Lond. 1884, p. 484 i

Hab. Mexico}.

BLENNOCAMPA (p. 31).

7. Blennocampa bicolorata.

Blennocampa bicolorata, Camer. Trans. Ent. Soc. Lond. 1884, p. 483°.

Hab. Mexico, Chapultepec and Orizaba (Bilimek, in Mus. Vind. Ces.1).

EMPHYTUS (p. 35).

1. Emphytus aztecus.

Emphytus aztecus, Camer. Mem. & Proc. Manch. Lit. and Phil. Soc. i. p. 163 (1888) *.

Hab. Mexico, Orizaba (F. D. G. and H. H. Smith').

* [The types of the species marked with an asterisk cannot now be found.—Ep.]

BIOL. CENTR.-AMER., Hymenopt., February 1899. 3 PP

468 SUPPLEMENT.

Subfam. VEMATINA (to precede the subfamily Hylotomina, p. 35).

NEMATUS.

Nematus, Jurine, Nouv. méth. Class. Hymén. p. 59 (1807).

1. Nematus mexicanus *.

Nematus mexicanus, Camer. Trans. Ent. Soc. Lond. 1884, p. 481°.

Hab. Mexico, Northern Sonora (Morrison ?).

EUURA (to follow the genus Nematus).

Euura, Newman, Ent. Mag. iv. p. 259 (1837).

Cryptocampus, Hartig, Fam. d. Blatt- und Holzwesp. p. 221 (1837).

1. Euura mexicana. (Tab. XX. fig. 17.)

Euura mexicana, Camer. Trans. Ent. Soc. Lond. 1884, p. 482°.

Hab. Muxico, Northern Sonora (Morrison 1).

HEMICHROA (to follow the genus Luura).

Hemichroa, Stephens, Illustr. Brit. Ent., Mand. vii. p. 55 (1835).

Leptocerca, Hartig, Fam. d. Blatt- und Holzwesp. p. 228 (1837).

1. Hemichroa nigricans*, (Tab. XX. fig. 16.)

Hemichroa nigricans, Camer. Trans. Ent. Soc. Lond. 1884, p. 482'.

Hab. Mexico, Northern Sonora (Morrison ').

HYLOTOMA (p. 38).

Hylotoma basimacula (p. 36). (Tab. XX. fig. 14.)

The reference to the figure was omitted on p. 36.

PTILIA (p. 43).

5. Ptilia crassula. (Tab. XX. fig. 18.)

Ptilia crassula, Camer. Trans. Ent. Soc. Lond. 1884, p. 484°.

Hab. Mexico, Northern Sonora (Morrison 1),

6. Ptilia luteiventris. |

Ptilia luteiventris, Camer. Trans. Ent. Soc. Lond. 1884, p..485 *.

Hab. Mexico, Northern Sonora (Morrison 1).

HYMENOPTERA. 469

7. Ptilia nigerrima, (Tab. XX. fig. 19.)

Ptilia nigerrima, Camer. Trans. Ent. Soc. Lond. 1884, p. 4857.

Hab. Mexico, Northern Sonora (Morrison 1).

ANDRICUS (to follow the genus Synergus, p. 72).

Andricus, Hartig, in Germar’s Zeitschr. f. Ent. ii. p. 185 (1840).

Aphilothrix, Forster, Verh. zool.-bot. Ges. Wien, xix. pp. 331, 336 (1869).

This is a dimorphic genus, Andricus being the spring bisexual and Aphilothrix the

autumnal agamic (unisexual) form.

1. Andricus (Aphilothrix) aztecus. (Tab. XX. fig. 23.)

Andricus (Aphilothriz) aztecus, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 261 (1897) '.

Hab. Mexico, Northern Sonora (Morrison 1).

AULAX (to follow the genus Andricus).

Aylax, Hartig, in Germar’s Zeitschr. f. Ent. ii. p. 186 (1840).

Aulax, Dalla Torre, Cat. Hymen. ii. p. 119 (1893).

1. Aulax rufipes. (Tab. XX. fig. 21.)

Aulax rufipes, Camer. Trans. Ent. Soc. Lond. 1884, p. 485°.

Hab. Mexico (Bilimek, in Mus. Vind. Ces. 1).

EUCQCELA (to precede the genus Cothonaspis, p. 73).

Eucoila, Westwood, Mag. Nat. Hist. vi. p. 494 (1833).

Eucela, Dalla Torre, Cat. Hymen. ii. p. 15 (1893).

1. Kucela claripennis*.

Eucoila claripennis, Camer. Mem. & Proc. Manch. Lit. and Phil. Soe. ii. p. 14 (1889) °.

Hab. Mexico, Vera Cruz (1. H. Smith).

9. Bucela mexicana *.

Eucoila mexicana, Camer. Mem. & Proc. Manch. Lit. and Phil. Soe. ii. pel4 (1889) ?.

Hab. Mexico, Orizaba (Ff. D. G. and H. H. Smith). me

3. Eucela marginicollis*.

Eucoila marginicollis, Camer. Mem. & Proc. Manch, Lit. and Phil. Soc. ii. p. 15 (1889) ',

Hab. Mexico, Orizaba (7. D. G. and H. H. Snvith 1).

3 PP 2

470 SUPPLEMENT.

4, Kucela incisa.

Euceela incisa, Camer. Trans. Ent. Soc. Lond. 1884, p. 486 '.

Hab. Muxico (Bilimek, in Mus. Vind. Ces. 1).

COTHONASPIS (p. 73).

2. Cothonaspis rufiventris.

Cothonaspis rufiventris, Camer. Trans, Ent. Soc. Lond. 1884, p. 486°.

Hab. Mexico (Bilimek, in Mus. Vind. Ces.1).

GRONOTOMA (to follow the genus Cothonaspis, p. 73).

Gronotoma, Forster, Verh. zool.-bot. Ges. Wien, xix. pp. 842, 346 (1869).

1. Gronotoma gracilicornis*.

Gronotoma gracilicornis, Camer. Mem. & Proc. Manch. Lit. and Phil. Soc. ii. p. 15 (1889) +.

Hab. Mexico, Orizaba (F. D. G. and H. H. Smith}.

ANACHARIS (to precede the genus Balna, p. 73).

Anacharis, Dalman, Anal. Ent. p. 96 (1828).

Megapelmus, Hartig, in Germar’s Zeitschr. f. Ent. i. p. 186 (1840).

1. Anacharis mexicanus, (Tab. XX. fig. 22.)

Megapelmus mexicanus, Camer. Trans. Ent. Soc. Lond. 1884, p. 487’.

Hab. Mexico (Bilimek, in Mus. Vind. Cees. 1).

IBALIA (to follow the genus Anacharis).

1. Ibalia ruficollis. (Tab. XX. fig. 20.)

Ibalia ruficollis, Camer. Trans. Ent. Soc. Lond. 1884, p. 488°.

Hab. Mexico, Pinos Altos in Chihuahua (buchan-Hepburn 3).

SMICRA (p. 78).

52, Smicra ardens.

Smicra ardens, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 262 (1897)'.

Hab. Mexico, Orizaba (fF. D. G. and H. H. Smith).

53. Smicra divinatrix.

Smicra divinatrix, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 263".

Hab. Honpuras. Ruatan I. (Gawmer 3).

54. Smicra fasciola.

Smicra fasciola, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 264 (1897) '.

Hab. Mexico, Northern Sonora (Morrison }).

HYMENOPTERA. A471

55. Smicra armillata.

Smicra armillata, Camer. Ann, & Mag. Nat. Hist. (6) xix. p. 264 (1897)'.

Hab. Mexico, Orizaba (F. D. G. and H. H. Smith}).

LIRATA (p. 102).

Lirata luteogaster (p. 102).

Figured by me under the name Schizaspidia flaviventris, on Tab. V. figg. 16, 16 a.

KAPALA (p. 103).

Kapala furcata (p. 103).

Figured by me under the name Schizaspidia furcata, on Tab. V. figg. 17, 17 a—d.

Subfam. PERILAMPINZ (to precede the subfamily EKupelmine, p. 114).

PERILAMPUS.

Perilampus, Latreille, Gen. Crust. et Ins. iv. p. 30 (1809).

1. Perilampus mexicanus.

Perilampus mexicanus, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 265 (1897) *.

Hab. Mexico, Vera Cruz (H. H. Smith ?).

2. Perilampus antennatus.

. . J CJ i (* 3 4

Perilampus antennatus, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 266 (1897) * tal al

Hab. Mexico, Vera Cruz (H. H. Smith ').

ICHNEUMON (p. 137).

Ichneumon mexicanus (p. 144). (Tab. VIII. fig. 1.)

The reference to the figure was omitted on p. 144.

Ichneumon suffultus (p. 144). (Tab. VIII. fig. 2.)

The reference to the figure was omitted on p. 144.

MESOSTENUS (p. 214).

Mesostenus brachygaster (p. 219).

Hab. Guatemata, Las Mercedes (Champion).

Thé locality was omitted on p. 219.

472 SUPPLEMENT.

LABENA (p. 277).

Labena grallator (p. 277). (Tab. XII. fig. 7.)

The reference to the figure was omitted on p. 277.

BRACON (p. 312).

Bracon albipalpis (p. 315). (Tab. XVII. fig. 6, 2.)

The reference to the figure of the female of this species was omitted on p. 315.

RHOGAS (p. 389).

Rhogas bugabensis (p. 391). (Tab. XVII. figg. 1 a-c.)

The reference to the figures of the mouth-parts of this insect was omitted on p. 391.

TRIGONALYS (p. 434).

4. Trigonalys scutellaris.

Trigonalys scutellaris, Camer. Ann. & Mag. Nat. Hist. (6) ix. p. 267 (1897) *.

Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith 1).

5. Trigonalys maculifrons.

Trigonalys maculifrons, Camer. Ann. & Mag. Nat. Hist. (6) ix. p. 268 (1897) °.

Hab. Mexico, Teapa in Tabasco (H. H. Smith 1).

6. Trigonalys apicipennis.

Trigonalys apicipennis, Camer. Ann. & Mag. Nat. Hist. (6) ix. p. 269 (1897) ’.

Hab. Mexico, Atoyac in Vera Cruz (H. H. Smith).

7. Trigonalys flavonotata.

Trigonalys flavonotata, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 270 (1897)'.

Hab. Mexico, Xucumanatlan in Guerrero 7000 feet (H. H. Smith?).

8. Trigonalys fasciatipennis.

Trigonalys fasciatipennis, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 271 (1897)'.

Hab. Mexico, Atoyac in Vera Cruz [9], Venta de Zopilote in Guerrero [ ¢ ]

(H. H. Smith?).

9. Trigonalys championi. (Tab. XX. fig. 24.)

Trigonalys championt, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 278 (1897) *.

Hab. GuaTEMALA, Panima in Vera Paz (Champion 1).

HYMENOPTERA. 473

DRYINUS (p. 444).

Dryinus maculicornis (p. 444).

To the localities given, add:—GuatemaLa, Mirandilla (Champion).

The Guatemalan habitat was omitted on p. 444.

EPYRIS (p. 449).

10. Epyris rufipes.

Epyris rufipés, Camer. Mem. & Proc. Manch. Lit. and Phil. Soe. i. p. 173 (1888) *.

Hab. Mexico, Orizaba (F. D. G. and H. H. Smith ').

11. Epyris punctatus.

Epyris punctatus, Camer. Mem. & Proc. Manch. Lit. and Phil. Soe. i. p. 174 (1888).

Hab. Mexico, Orizaba (F. D. G. and H. H. Smith).

12. Epyris orizabe.

Epyris orizabe, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 273 (1897) °.

Hab. Mexico, Orizaba (fF. D. G. and H. H. Smith).

13. Epyris palliditarsis.

Epyris palliditarsis, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 274 (1897) °.

Hab. Mexico, Teapa in Tabasco (H. H. Smith 1).

14. Epyris scutellaris.

Epyris scutellaris, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 275 (1897) *.

Hab. Mexico, Tierra Colorada in Guerrero 2000 feet (H. H. Smith 1).

15. Epyris montezuma.

_ Epyris montezuma, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 276 (1897) '.

Hab. Mexico, Orizaba (f£. D. G. and H. H. Smith*).

MESITIUS (p. 455).

Mesitius longicollis (p. 455).

The locality in Mexico, Cordova, was omitted on p. 455.

CORRIGENDUM.

On Tab. XVII. fig. 15 a species of Ichneumonide, subfam. Ophionine, is figured

under the name Pharsalia albofacialis: this insect is not mentioned in the text, and as

the locality-label has been lost, it is not advisable to describe it now.

—— latipetiolaris

ACANTHOCHALCIS

rr ee

ACORDULECERA

Cr er

re ey

eoneeoeerr eee eae ere nse

—— albispina

eee rere ee eee ee

ee Y

——— chiriquensis

—— ferrugineus

Pe ee

——- violaceipennis

violaceipennis

Pe ee

AGATHOPHIONA

A gathophiona

ee ee

Allantus barda

Pee ee

—— bugabensis

—— championi

—— chiriquensis

BIOL. CENTR.-AMER., Hymenopt., August 1900.

ere ee

ere rere tere ene

INDEX.

Page

Alysia chontalensis .......... 416

erythrogaster .......... 414

longicornis ............ 414

—— melanocephala.......... 415

—— pulchripennis .......... 413

xanthoptera ............ 4138

Amblyteles o. 0. ccc cece cee 136

AMISEGA wesc cece eee e nee 457

-—— cuprifrons.............. 457

AMOTURA 1... . ccc cee ences 180

apnulicornis............ 131

ANACHARIS 2... eee cece cece 470

mexicanus..........000- 470

ANAPRES oo. ewes 436

ANDRICUS «0.0... cece eee es 469

(Aphilothrix) aztecus.... 469

ANGUEID coc cc cen ccne ce nnees 3802

ANOMALON 2... cece cece eee 300

agnatum ..... cc eee eee 301

—— (?) elegams.............. 301

—— fumipenne.............. 301

guatemalenum.......... 300

——— MaAQuM ...... eee 300

—— mexicanum ............ 300

—— peritum................ 300

— quadrilineatum.......... 3801

—— residuum .............. 300

— scelerosum ............ 300

—— vitticolle .............. 300

APENESIA .e ee cece cece eee 448

chontalica........2. 0.0. 448

Chontalica oo. cee cee 449

—— flavipes................ 449

Aphilothrtx i vicvccc ccc cceaee 469

AREOLARIL ...... cee cece eee 397

AIG ciccee ccc cece ec ne cneee 35

ASCOGASTER.........0. 0000s 396

bugabensis ..........4. 396

ASEIRBA wo. cece c eee nee 127

caudata...... cece ee eee 128

ASPICOPA oo ccc cece ee 73

AULACINA woe ee el cee een eee 422

AUlACOMEPUS oo ec cee 51

[Names in small capitals refer to Families, &c.; those in roman type to the chief reference to each species included in the work ;

those in italics to species incidentally mentioned, synonyms, &c.]

Page

AULACUS oo cece cece cece eee 423

——hyalinipennis .......... 428

ruficollis ...........0.. 423

AULAX woe ccc ce cece eee ees 469

tufipes ...........0006. 469

AUlocodus oo. cce cee ececnees 417

AXIMA vicccccccecccceeuces 112

AXIMINE .oe cece eee eae 111

AYyldt occ ccc ccc cee 469

BALNA wo... cece cece eee eee eee 73

Bana vice ccc cence eens 470

nigricepS ...........0.. 74

BANCHUS woe cece e eee e eee ees 311

MeXICANUS.......-..006- 311

BASSUS 1.0... ccc eee eee 281

frontalis 2... ......00 ee 281

BEPHRATA... 0... eee cee cence 109

—— ruficollis .............. 109

BETHYLINE ....... 0.000000. 448

BLENNOCAMPA .......... 31, 467

—— albofemoralis .......... 31

——alpina .......... does 33

bicolorata ............0. 467

Inhabtlts. 6... eee 32

—— intermedia ............ 31

intermedia... . ccc eae 32

—— leucostoma ............ 32

subceerulea ............ 32

eT 3l

sumichrasti ............ 31

Bothrioceros americanus ...... 419

Brachistes ....ccece ccc c eee ae 410

Brachymeria panamensis...... 99

Brachytoma ..cce cee ccc ces 61

BRACON ..... eee eee eee 312, 472

Bracon,....... 318, 325, 329, 377

albipalpis .......... 315, 377

—— albispina .............. 472

albispinad .............. 317

——alticola ................ 825

——apicipennis ............ 318

od QQ

476

Page

Bracon apicipennts ....e...5. 316

ASPASIA 6... eee ee ee eee 323

ASPASIA voce c eee eee 317

— blandicus .............. 326

—— bugabensis ............ 316

—— chontalensis ............ 322

—— chontalensis oo... cc. 0ee 317

—— comparatus ............ 327

comparatus ........ 326, 828

compunctor .........+.-. 3138

-— crudelis.............06. 327

CrUudelis .. 6. ccc cee 326

democraticus .......... 327

democraticus .... 0... eae 826

—— distinguendus .......... 317

distinguendus ........+. 316

—— erythrostoma .......... 319

—— erythrostoma........ 317, 320

— evolans .............4-. 322

—— excelsus,.........0. 006. 321

—— encelsus .....6.. 206 317, 822

—— forreri .. 0... cece eee eee 324

fOTPETt cecccccrvcevenee 317

frustratus ...........085 314

frustratus .......4.. 315, 316

—— (?) fuscipennis .......... 378

—— gracilescens ............ 315

hebes..... 0. eee eee ee eee 325

heterodoxus ............ 318

heterodoxus .....60.006. 316

——— L@VIS oc eens 357

—— laticarinatus............ 319

——— melanostoma .......... 3820

—— melanostoma..........6. 317

—— montivagus .........6.. 328

——— morrisoni ............6. 320

——— MOrrisonit .......... 316, 321

—— nicaraguensis .......... 319

——— NICAPAGUENSIS . 1... ee 317

——(P) niger wo... . eee ee, 378

——— MUGTICEPS veces 329

sedulus .........-0c0ee- 321

SEAULUS Lovee cece cee 317

——(?) vestitor ............ 378

BRACONIDH ..... ec eee ee , 812

BRACONINE 2.0... eee eee 312

BRASEMA 2... 0. ccc ee cee ees 124

—— hbrevispina.............. 124

Caloseter... 0c ccc ccc eee 125

CALYOZA oo. cece eee eee 456

(P) westwoodi .......... 456

CALYPTUS 2.0... 2 ce eee 410

mexicanus.............. 410

CAMPOPLEX wo. cece eee ees 304.

aurifer oo... ccc eee 305

INDEX.

Page

Campoplex calcaratus ........ 306

divisus .........0. eae ee 306

—— flavipennis ............ 305

AlQVIPeS . 6. eevee eee e eee 298

——_ pMarus .... ee eee eee ees 396

guatemalensis .......... 304

ineequalipes .........--. 306

——— lacivius 2.2.0.0... cee eee 304

lectus 2.6... eee ee eee 305

legalig 2.0.6... ee eee 306

—— maceratus ..........0055 306

——macilentus ............ 306

—— melliventris ............ 305

—— mexicanus.........-...- 305

—— nefastus.......6..0 eee 306

—— opimus ......--e eee eee 304

——~ tepanecus ......-....--- 304

terminalis ..... se cece 305

VETHPACiS v6. ee eee eee ee 305

Camptobrium.....cc cece eens 64

NUGTUCCPS ove cevvceeeaes 64

Caprtontus oo. cece ce ee eenes 417

CENOCGELIUS ..... cee eee eee 417

chontalensis ...........- 418

filicornis ...........06- 417

nigricepS ..........000- 417

NUGVUCEDS cv v cc vcenees 418

ornatipennis .........666 418

pulcher .............44. 418

Cephalocera ........4465 52, 53, 54

CANCAT ees 56

PUMUA Loree vec ceeee 53

CEPHIDH 1... 0... ce eee eee 67

CEPHUS 0... cee ce eee eens 67

COphus wove ci vccvcvcvevcues 104

MeXICANUS... 6... eee ee 67

Cerasphorus cinctus .......... 278

CHALCIDIDE ...... 00... eae 76

Chaleidina 0.0.0... cc cece 100

CHALOIDINE... 0.2.0... eee 77

CHALCIS...........00 0000 eee 99

Chalets oo. e eee 77,78, 9

AaNNUlLPeS . 6... reece ees 99

comitator .............. 99

compacta .......---.06. 99

—— flavipes 6... cece eae 99

Le oe 99

OVALA LL eee ee eee 99

pubescens .............. 99

punctala voice ee 87

Chalettella .. 0... eee 78

CHELONINE ............0065 393

CHELONUS.... 0... eee eee 393

Chelonus 60. eee 396

annulipes .............. 395

annulipes .....- 1... eee 3938

Page

Chelonus basimacula .,...... 394

basimacula wi... cee 393

quadrimaculatus ........ 393

SONOTeNSIS ....06-0. 0000. 395

SONOVENSIS . occ eee cee 393

CRITOCETUS Wo ee ees 102

SUPCALUS. Le ees 103

CHRISTOLIA .... 0. cece eens 247

Calearata .. 0.0... cea 248

graciliventris .......... 249

—— menticula .............. 248

mirabilis .............. 249

mirandus ...........06. 249

—— nubecula .............0. 247

panamensis ..........., 247

—— pulchripes.............. 250

—— tarsoleucus ............ 250

zapotecus ...........04. 249

CHRYSIDIDE ...........0.06, 457

CHRYSIDINE ..... 0.0.0.0 eee 460

CHRYSIS.... 0... ce cece eee 460

| 464

COPURAA Loc cee 462

coerulans .............. 464

FACHA.L ccs 462

—— fasciata............00.. 463

MNEEGTA vee ee rece cceee 461]

LUNUGETAL. ec c ce e 463

MeXICANA 2.6... . ce ee eee 460

—— montezuma ............ 463

MUCTONATL. 0. cece e ces 462

NUIAUA oe 464

—— panamensis ............ 464

—— parvula............08.. 462

Parvula voce ecccccevcces 463

pilifrons................ 465

proxima .............. 465

—— punetatissima .....6..... 463

quadri-tuberculata ...... 461

rastellum ...........06. 465

selenia ..... 0. cee eee 462

——— sonorensis........ re 461

COLD Lecce cece nae 461

triden8 ....... cece eee 462

——- B-edentata ..........6.... 462

VUPENS ees 462

CUIMBDEN oc ene 52

Cimbicind vice ccc ees 60

CleonyMus oo... cece eee ccnee, iv

Cleptes oo. ccc cece eee 457

CLEPTINE ... 0.02.0. cee eee 457

CLINOCENTRUS..........0005 386

rugulosus ............6. 386

Cocloides . 2... ec e 382

CONUTAa woe cee eee 78, 97, 98

Aindiata oo. iv ceecveee. i

, Page

Conura punctata ............ 87

seutellaris 6.0.6... c cee ee 82

CoRYNOPHILUS............ .. O8

ruficollis .............. 58

Cosmocoma oo... ec eee eee 436

COTHONASPIS .......... 73, 479

Cothonaspis ....... 0... c eee, 469

allotriiformis .......... 73

rufiventris.............. 470

Crabro voce eee 309

Cremustus . 600.6. cece 302

CRYPTANURA ..,.. 0... eee 251

Cryptanura .. 6. eee 247

— acolhua................ 251

—— delecta ................ 261

—— incauta .............00. 251

——— incauta ... 06-6 ee 252

laticarinata ............ 25Y

-——— (?) pachymene.......... 252

—— pedicata ............0, 252

—— sumichrasti ............ 251

CRYPTINE 2... cee eee 201

CTYPLOCAMPUS voce cece c eens 468

CRYPTOGASTRI .........000-- 393

CRYPTUS ..........0-6. .... 202

Cryptus . 0.6 cece eee 244

albitarsis oo... cece eee 204

—— americanus .......+44.5. 20

—— angulatus ......... weee. 206

—— arcuatus ..........66. . 205

—— argentifrons ............ 204

azteCUS ........00. 000 205

—— bicolor ................ 202

—— calipterus .............. 208

celaya ....... cee eee .. 200

———— CILUS occ eee 206

SEVIUGINCUS Lovee eens 204

fraternans .............. 208

Fraternans......... 0006. 209

fulvuS oo... eee eee 208

JUSCTIPENNIS ooo eee 211

——— grallator occ 277

—— guatemalensis .......... 209

—— hebetis ............-6.. 208

—— hebetis .... 6. cee 209

——— montezuma ..........6. 208

——_ MONtEZWINE «0.6... cee 202

——- monticola.............. £03

nivalis ...........-.06- 2038

m—— NIVANS ee .. 204

——— persinuls .... 0... 205

-—— godalig ...........0000- 204.

—— solabilis................ 206

——— SOPOTIUS 6 es 209

—— tantillus................ 2085

-——— tenuiventris ............ 205

Cryptus transversus .

Cyphona

DERECYRTA

DIAPRINE

Dictynna

Didymia

——- biramosa

Dielocerus

DioMorvs

Diomorus

xanthostigma

CYCLOsTOMI

Cyllocerva

CyNIPID&

CYNIPS

Cr ee ee

er 2)

gcuatemalensis

guatemalensis.....

imitator.....

Cr a

Diplolepis setifer

Dirrhinus

DITROCHA ... 0.0... cece eee

DorycTEs

—— pertinax

strongylogaster

Doryctides

DorycTINE

ee)

ATT

Page

DRYINE. wk eee wees. 440

DryINUS ...... ran 444, 473

—— albitarsis ........ eeeeee 447

—— alticola .............. .. 444

—— alticola .occcccceecaes .. 445

—— chiriquensis .......... .. 447

—— maculicornis........ 444, 473

—— macultcornts oo... ec eces 445

melanocephalus ........ 446

—— melanocephalus..... wy. 447

nigricans ...........06. 446

ruficeps............00.. 445

EARINUS 2... cee eee eee 400

erythropoda ............ 400

EIPHOSOMA .......... Sees 3808

Eiphosoma vo. cece 301

aztecum.......... se eeee 302

—— mexicanum ........... , 3802

—— nigrovittatum .......4... 802

vitticolle ........ wees. 802

ELAMPINA. 6... eee eee ae 458

EMPHYTUS.........2.00 35, 467

AZTECUS wo. cee ee ee es 467

championi.............. 36

—— mexicanus.............. 35

SETOLINUS oe cee . 30

EENEY Loe ee eee eee , 35

Bimpyrtan ccs . 34

Einiscopulus oo ee ccces .. 290

EPHIALTES ........ Sete e eee 262

-—— annulicornis ............ 262

atriceps....... eens 262

nigricans .............- 263

EPIMECIS ..........0000000. 270

fasciata ... 0.6... wee. Q71

mexicana ...........0.. 271

—— (P) thoracica ............ 70

tibialis ................ 270

tibialis... cece cee, 271.

EPIRHYSSA .....-. 0.00. 0005 262

mexicana ....-........- 262

EPISTENIA... 0... ..00 0.00008 129

Tiptstenta ceca 131

balteata.........0000000, 129

balteat@... 0... eee, 1380

maculipes............. . 180

rufipes .............0., 130

Tpit nus oo eve cece cece eee 78

EpyRis ...... vce ee ee 449, 4738

Epyvts vee 454, 455

—— bugabensis ............ 45:

~— coxalis ................ 450

—— erythropoda ............ 450

—— guatemalensis ........., 4533

—— montezuma ........ wee. 473

478 ' INDEX.

Page Page Page

Epyris multicarinatus ........ 452 | Euperilampus gloriosus .....- 135 | Exochus melanocephalus...... 280

nitidiceps .............. 451 | EURYTOMA ........0e eee ees 107 pulchripes............-. 280

—— nitidiceps 1.0... cece cee 452 | Eurytoma ........eee eee 109, 112 puncticeps........--.+-5 279

orizabe .......... eee ee 473 argentata ..........0065 108 stramineipes ..........-. 279

—— palliditarsis ............ 473 argentata .....-....465+ 107 tricarinatus ..........+5 280

—— punctatus .............. 473 aurifrons ........-++++- 108 | EXODONTI ............ee eens 418

Tufipes 1... .. eee e eee nee 473 GUTUFTONS wo cece ee eae 107

rugifronS .......+..e04 449 petioliventris .......... 108 | FiGtripm® ..... ee eee ee ees 73

— scutellaris.............. 473 EURYTOMINAD wo cece eee e ees 107 0 ah) 423

—— testaceipes.............. 452 | Huspathius....... 0000 eevee 379

Viridig ......... eee 451 VUURA cece ccccccceeeneeees 468

. . GALLICOLINE 2... ee ee ee eee 70

Eriocampa oo... ccc ee ee ees 2 —— mexicana ..........006- 468 \ 493

FXUCHARINA ......-ee eee aces 101 FEVANIA wo. cee eee eee ee ees 425 GASTERUPTION sores essere. 9

Eucharis flabellata .......0.. 108 | Evania .......00. ee 427,434 | —— macullcorme .-. +++... ov

——— fUrCAt vice cee ccccrenee 103 0 | 427 ser tall seeeeeereeeees 19 4

EUCQLA oo... 0c cece eee 469 | ——albispina ............4. 42B | —_ SEMTHCONG wave eee se rere

. . 4. : GLYPTA . occ ce cet ees 271

claripennis ............ 469 albo-facialis ..........-- 426 Ibovieta oT71

incisa... 0... eee eee ee 470 albo-facialis ....+.....-. 427 veehosta rrretetseessss 979

—— marginicollis .......... 469 ——— appendigaster .......... 427 i , In... O71

mexicana .............. 469 azteca ...... been ee eee 480 | ORBEA sever ree cere ees >

Eucoila ve cece cece ee eev ene 469 Aztek... ec ec se veceaes 430 tufomarginata -.......+. 271

Claripennts.... cscs eceeee 469 CYASSA fk eee ee eee 433 Gonarorrs ncn te eee ees wm

—— marginicollis............ 469 dorsalis ........ee eee eee 433 ~~ - omarginatus sree ve

MELUCONA oie cer cvecvees 469 fascialis........e 0 eee 427 ° hala "Terese 4 8

EUcOmIDH 2... . cece ee eee 72 Jlavicornis. ce. ceecveeees 427 Te edarine Sots ve

FElumicrodus oo. e ccc cee 401 ———_ fUSCIPEB vee ere neceees 427 orbitalis................ 449

EUPELMINZ .........00 20 eee 114 | —— guatemalensis .......... 433 lid; tar + seeeeeeeeee ve

EUPELMUS........ce eee cenes 115 | —— guatemalensis ........+. 434 PAMOUBRSIS bree neces ees

Eupelmus . oc... ese ceees we. 124 ——— l@V1gUuta. oe cece 427 . testaceus -...--sesseee 440

Los . GONIOBUS Co ce ee ees A454.

albispina .............. 120 —— marginata...........06. 430 GRronoroma 470

GUISPINA Lo eee eee 118 | —— maximiliani............ 428 ye ns

bimaculatus ............ 120 nitida 1... 00... ee eee 431 gracilicornis ....... ++... 470

. . GROTEA oo. eee cece eee eee 309

bimaculatus 66.6... ea 118 A, 425 anquina 209

brevipennis ............ 117 ocellaria ......6.. cee ee 432 JING vv vee wwe ww wee °

—— cingulatus.............. 122 ornaticornis ............ 429 a fulva Sees eee 309

cingulatus...... 119, 128, 124 rugifrons ..........e0ee 428 TMREXICANA verve rece ce ees 309

. . ; GYMINMA coc cc ce ccnn cern cvnes 45

—— compressicornis ........ 115 TUQOS® Lec se ce eeee seen 432 .

erythrothorax .......... 121 tinctipennis ............ 425 MEDIOGNG weve ween ec wees 46

—— erythrothorax .......... 118 —— tinctipennis ......0..46- 427

fasciiventris ............ 123 trochanterata .......... 481 | HALricELLA..........50.00. 99

Sasctiventris ..... eee 119 | ——untcolor.... 0c. eee eeee ee 497 | Halticella ..........4. 78, 97, 98

flavipes .........0... va. 122 Varicornis .............. 430 ornaticornis ....... tee 100

——— flavipes .. 6. cece ccc eeees 118 | Evanrpa@...........c0cc eee 492 | Harpiphorus ... 06... eee 35

—— geniculatus ............ 119 | EvANUINE ....... 0... cece ee 423 | HEDYCHRIDIUM ............ 458

geniculatus .........00e 118 | EXETASTES ..............0. 310 CYeSSONL. 6... . 2 eee 459

BIAS Loe eee cece eee 116 | —— mexicanus.............. 310 dimidiatwm .....eeeeaee 460

gracilis .............-6. 121 —— tarsalis ................ 310 —— guatemalense .......... 459

—— gracilis .......... se eeae 118 vittatipes ..........00., 310 guatemalense.........+45 460

—— hyalinipennis .......... 121 | ExocHILUM ..............8. 298 miliare ...........0-05- 459

——— hyalinipennis............ 118 —mundum .............. 298 a 460

—— petiolaris .............. 123 | EXocHOIDES .............00. 2978 | HEDYCHRUM..............-. 458

petiolaris .......... 119, 120 concinna® ..........6e.6. 278 Hedychrum vic ceccvecc veces 459

—— testaceicornis .......... 119 —— mexicana .............. 978 ASPETUM occ eens 458

testacetcornis............ 118 EXOCHUS wo... cece cee ees 279 CYESSONE 6. eee e cece eens 459

— testaceus ............., 117 | Exochus . 0... ccc cee ee 278 Louistan® .i.cssevereeee 458

FXUPERILAMPUS ............ 135 ceruleiventris .......... 230 | —— Violaceum.............. 458

Hedychrum wiltit

Ce |

eee eee eee se eae

Hemidianeura

Ce ee ee a D

—— albituberculatus ........

ee ro

flavovariegatus

junctus .............0..

macula ............0005

monilis ............0005

patruelis ..............

Pe ee ee

ruficornis ...........00.

rufithorax ..........40.. y

scitulus ............00--

servilis ....... ccc eee eee

bce eee eee ee 256

HETEROPELMA

ee er

ee ee ee

Ce ee ee

Ce ee

eer et teres eoee

Ce ee

Pr ee

Pe ee ee

—— munitus

Pr ee

—— propinques

INDEX.

Page

Hoplismenus rixosus ... 6.0.05. 178

SCULCLIUTIS C6. eee e ee ceee 182

FIYLOTOMA ...........-.. 35, 468

Hylotomat... cece eee 42, 48, 45

albitibialis.............. 4}

—— annulipes .............. 40

—— basimacula.......... 36, 468

—— bipartita .............. 40

OIVAMOSA oo ee eee 42

bivittata ...... 0.00.08. 37

CONCIMNA veveccavceeces 44

consobrina ..........6. 39

—— dorsalis ..............., 36

CXIMIA 2.2... eee eee eee 36

fascialis....... cee eee 38

fasciatipennis .......... 41

intermedia ..........-- 38

lepida ... esc e eee eee 39

NIQTICEPS .....-. ee ee eee 39

—— poecila ...... eee eee 38

PYOCeVA cece eee ee eee 37

SCOPUIATIS ... cece eens 36, 37

semifusca ..........0005 39

testacea..... ce eee ee eee 37

VErsiCOlOY occ cee cece ee 44

vittata .....ce eee eee 37

TIYLOTOMINA ....... 0. eee 35

FTyptid civic cv cc ccce eevee 425

IBALIA wo... ee eee eee ee 470

ruficollis .............. 470

ICHNEUMON ............ 137, 471

Ichneumon ...... 186, 140, 187, 191

abactus ......... ee ee eee 180

abaculus ............4. 173

abitus ..........0.. eee 175

abjectus.............0.. 173

ablutus ............00-- 148

abnormis .........-.... 183

ACC]IVUS. 6. ee ee 182

actuOSUS 2... 06. ee ee eee 170

additus ......... 0.0000 156

alvaradO ...... 0. eee eee 175

amecus ........... 0000. 173

appendigaster .......... 427

argentipilosis .......... 143

argentipilosis. .......... 144

ariel ....... 0. eee eee ee 181

arist@..... 6c. cee eee 171

AITOPANS .. ee. eee eee 157

astarte 0.0... - cee eee 139

azteCUS ........-+0e. 0 182

—— beatus ..........2 000s 177

bellatulus .............. 141

Bbellatulus oc cece ccc eens 142

Page

Ichneumon bilimeki ........ 140

—— blandicus .............. 181

Breviventris vec cececcves 187

carinifrons...........00. 150

CASCOL Lecce eee eee eee 137

—— CAUIStICUS ....... cece 156

Celatus ....... cece eee 150

CALUS cece cc eeaee 152

centraligs .........ceee- 173

CentrOsuS ......6 ce eee 175

cephalotes.............. 173

Chalco ......... ee eee 172

—— championi.............. 159

chiapus ............e eee 145

chichimecus ............ 173

—— chiriquensis ............ 140

cCholula .........-. cee 171

citrinus......... wen eee 156

CONICUS 2... ee cece eee 187

consanguineus .......... 155

costaricensis..........6- 138

cupidus .............00, 159

CUYIATUS. J. kee eee 145

curtituberculatus........ 153

decemmaculatus ........ 1438

decorosus ..........005- 175

——- democraticus .......... 167

dilucidus ............- 145

AUUCtAUS occ cece 147

—— dissonus .............. 178

(UIUS. 6... eee eee eee 175

———- encaustus .............. 169

——epicus ............6... 172

—— ETOS Lecce cece eee 149

— esurialig .............. 182

———- EXCUTALUS 2... cee eee eee 172

—— exquisitus.............. 179

—— famelicus .............. 170

fastidiosissimus ........ 186

JAVUS cece ecw eee eee 292

forreri .. 0... ee cee eee 151

fortispina .............. 185

frivolus ... 00... 0.0 cee ee 148

FrivolUs occ e eens 149

godmani .............. 157

GOUMANE ieeeccseevces 158

vracilentus ............ 171

guatemalensis .......... 160

igmarus...........-.... 172

—— illacessitus ............ 1€3

—— illacessitus.....ccccceeee 162

impudicatus ............ 154

infulatus .............. 183

Imoratus......... 0. .000. 172

intentus................ 171

izucarus...........0000% 156

480 INDEX.

Page Page Page

Ichneumon jalapensis ........ 152 Ichneumon prolixus .......... 171 Iphiaulax abjectus........ 358, 360

jugiosus ....... eee eee 176 propinquus ............ 178 argentifrons ............ 349

junceus .............00. 169 | ——pterelas.............05- 142 argentyfrons ........+4.. 347

lariceus..... 6.66. ee eee 147 | ——rixosus ............00. 178 | ———~ AVAFUS «0. eee eee eee 374

LATtceUs 6... ccc cece eee 148 | ——soallei................5. 162 AZLECUS . 6... ee eee eee 348

LectUs .. cece eee eee 186 | ——salvini ................ 155 aztecus ..........45 347, 349

lenis ........... 00 ee eee 188 salvint..... bee eee eens 156 basimacula ............ 353

rr 435 | —— scutellaris.............. 182 | —— beatus ............ sees 386

—— limatus ................ 178 | ——semiobscurus .......... 139 beatus .. 1... eee eee 334

—— limitaris .............. 176 | —— semiobscurus ..... 6000s 140 —— bellicosus .............. 375

—— lymphatus.............. 158 | —— similans................ 182 bellicosus .......6. 400. 374

—— maculipleuralis.......... 153 | —— solitarius .............. 171 bifoveatus............., 366

maculipleuralis .. 151,154,155 | —— subfumatus ............ 146 bilimeki ............., 360

—— maculosus.............. 179 | ——sublutus .............. 164 bilimekt.. 6... eee e eee 358

——— marginiscutellatus ...... 184 ——subpinguis ............ 149 brachyura.............. 345

— maritus..... Lecce eens 171 | —— subpinguis.............. 148 brachyura ..... cece eee 329

—— melanopoda ............ 157 | ——subsecivus.............. 168 | ——— calderensis ............ 343

—— melanopoda ........000, 158 —— subspinosus .......-.... 170 —— calderensi8..........004. 344

—— mendicus .............. 172 | —— suffrageneus ............ 165 | —— canescens .............. 361

—— meridionalis............ 142 suffultus .......... 144,471 | —— capetillensis ............ 362

—— meridionalis ............ 143 sycophantus............ 146 | ——championi.............. 339

—— mexicanus ,....... 144, 471 sycophantus ........ 150, 161 champtoni ...........00% 340

—— minax ................ 178 tenebricus.............. 170 | ——chontalensis............ 350

—— montezuma ............ 179 tenuicornis ............ 176 chontalensis ........006. 347

——— monitus.............0.. 176 | ——tepanecus.............. 170 —— cruentatus ............ 363

——— motivus .............. 176 tepidus .............-4. 161 —— cruentatus ............ 362

multiplagiatus .......... 164 tepidus .. 0... cece eee 162 —— divinator .............. 370

——— munerosuS............4. 159 teres... eee ee eee, 173 AWinator wo. ce cee ceeee 369

—— munitus...............0. 178 toltecus 2.06. cece veceeee 136 —— dolosus ................ 331

—— nestor ...... eee eee 170 ——toluca .............8., 172 egreglus oo... .... ee eee 372

—— nigroceruleus .......64. 136 10) 0) 170 CGVEGQUS Voce ccc eee 371

—— nigrofemoratus.......... 172 totanacus .............. 145 —— ETOS eee eee eee eee 3d4

——notabilis .............. 180 —— tragicus...............4, 183 —— exaltatus .............. 331

—— occiputalis ............ 182 truculentus ............ 166 —— excuratus ...........0.. 304

—— opaculus .............. 169 —— tumidulus.............. 152 ——— CXCUTALUS Ce ee eee 363

opimiosus .............. 166 tumidulus ...... 0.0.00. 1538 —— frugalis................ 341

opiparus .............. 161 | ——turpiculus.............. 163 fuscidens .............. 305

OPtypArUs oo... ceseeeee -. 162 CUPPUCULUS oo cee eee cee 164 fuscipalpis ............ 361

—— oppilatus .............. 142 —-tuxtla ................ 171 ——- fuscipalpis... 0.6... 358

orizabensis ............ 183 —— valladolidensis.......... 167 —— gloriatorius ............ 341

otomitus ............4. 145 | —— verepacis.............. 148 gleriatorius ........ 332, 340

panamensis ............ 158 ——— virescemS .............. 178 —— godmani .............. 344

—— parandus ............., 173 —— yucatanensis............ 168 gravidus ......... 0.08. 362

parredes .........0005, 170 | ——aaeatecus .. ........... 170 gravidus wo... eee, 303

parsimonicus .......... 174 | ——zapotecus .............. 169 guatemalensis .......... 342

passirus.............04. 148 | ——aaptlanus .............. 172 hector .......0..--.00, 342

—— phedra..............4. 146 ICHNEUMONIDE ........ 135, 136 ~ RECON ee cece cece cee 341

—— ph@adra wi... ceeeee 145, 147 INCALIA 0.0... eee ee ee ee eee 52 humerosus ............ 364

—— picturatus.............. 178 | Incalia............00.. 51, 58, 54 imitatrix .............. 340

—— piliventris ..........., 179 hirticornis.............. 53 InfirmuUs ...........08. 361

—— placitus................ 172 INQUILIN® ...........000048 71 —— infirmus........ 308, 362, 379

—— platyaspis.............. 154 | Iputavuntax ................ 829 —— Janus...............04. 336

—— platyaspis ...........44. 155 | Iphtaulay .......... 312, 318, 377 jucundus .............. 375

——pollux ................ 188 abaculus .............. 350 queundus .......... 374, 3876

polycerator .......s een. 435 abaculus ........ cee, 347 lachrymosus............ 332

polyturator ...... ce ae 435 abjectus................ 359 lacteifasciatus .......... 370

INDEX. 48]

Page Page Page

Iphiaulax lactetfasciatus ...... 369 Joppa ...... 150, 179, 187, 206, 209 KAPALA wo... ese e eee .. 102, 471

—— levis.... ee... eee 357 aciculata ....... cee .. 189 —— furcata ............ 103, 471

——— Megaptera ............ 358 | —— alternans ..........0.0. 195

—— mendicus .............. 376 alternanS 1... eeeeeaes 192 LABENA... Le... 277, 472

—— mexicanus,............. 374 —— chiriquensis ............ 199 —— gloriosa.............0-5 277

——— molestus .............. 367 | ——chiriquensis ........ 192, 200 grallator .......... 277, 472

—— molestus 1... 0... cee 369 —— CONTCH «oe ec cece cc cee 187 LaMpronota ..ccecccceccveee 975

montezuma ............ 349 —— decorata .........0000- 196 1 276

—— montexuma ........ 347,350 | —— decorata ..........005- 192 bella vee ee ee eee eee e ees 277

—— (?)multicarinatus ...... 377 = OEGV EIA vce c nc eeee 189 (?) yucunda ........000. 277

nigriceps ............-5 329 —— elegantula............6. 194 ——— MEXICANA oe eee 276

paganus................ 365 —— elegantuld .......... 191, 192 Orbitalts. .. 6. eee eee ee 277

PAGANUS. 0. cece ceca 363 —— fumipennis ............ 195 LEIOPTERON............000 75

peronatus .............. 337 -—— fumipennis .....ceeceee 192 Levopteron oo... ccc ccc 73

peronatus ....... 000 eee 338 geniculata............6. 199 westwoodii ............ 75

persecutor...........0.. 347 ———~ genteulatad oo... eee eee 193 LELAPS 1... eee eee ee 132

piliventris.............. 346 ——hilaris ................ 197 albipes .............00. 132

piliventris .........-200- 345 AUlarts vec cee cece eees 192 ferruginea.............. 133

—— pilosellus .............. 368 incerta ......... 0.0 196 tibialis ................ 133

—— pilosellus .......... 367, 369 UNCETTD vec eer erececceee 192 LELUTHIA ............00000, 392

pugillator .............. 365 MNCLYER Cove ve cc ce vevae 191 fuscinervis.............. 392

pugillator ... cece scene 363 maculicollis ............ 200 MEXICANA 2.02... eee eee 392

—— pulchripennis .......... 330 — maculicornis............ 196 Leptocerca oo. cece cece 468

—— pulehripennis .......... 329 Maculcornis ........ 192, 197 LEUCOSPIDINE ...... 00. ce cee 76

pulchripes.............. 338 MACUOSA Lic cee renee, 179 LEUCOSPIS .............00. 76

quadripunctatus ........ 352 —— melanocephala.......... 193 Leucospys vee ee cca cence 100

repentinus.............. 371 —— melanocephala .......... 192 apicalis ............0000. 76

——— VIXOSUS 1.0... 0.0. eee 372 melanostigma .......... 195 AZLECA eee eee ee eee ee, 77

PUVOSUS Cove eee neces 371 melanostigma ...... 192, 196 —— bulbiventris ............ 76

TOPEVS] 2... ee eee ee eee 330 —— modesta wi... ccc... ae 198 —— dubiosa................ 77

A 329 ——— modestit ... ce cccccecceee 192 klugli we... eee eee 77

rufo-plagiatus .......... 844 NigTICepS ...-.......04. 197 —— mexicana ....,......... 76

salvini ...-. cece cee ceee 360 —— nigriceps .......... 192, 198 MEVICANA oo ceececeeceee 7

——— SGIVINE occ ee 358 —— pulchripennis .......... 191 sumichrasti ............ 77

SClariUS 26... eee eee 333 —— rogers] ........ 00. 198 tolteca ...........0000. 77

SCLATIUS 66... ,. 882, 334,340, —- POGEVSUE voc cee cee ce eee 192 LIMNERIA ............00000, 307

SONOTeDSIS..... 0. eee eee 373 | sumichrasti ............ 200 albispina .............. 307

——— SUAVIS ... cee eee ee eee 345 | —— sumichrast? ............ 1938 alpestris ..........0.00. $07

SUAVIS cece ecccecccecee 346 | — suturalis .............. 195 (?) insolens ............ 308

12) aS) 363 | SUtUrals oo. eee eee 192 —— montezuma ............ 308

tinctipennis ..........-- 357 variolost ....... 0.0008: 194 —— sonorensis.............. 307

triangulator ........6+-. 368 -—— vartolosad oe. eee eee 192 LIRATA oo... eee eee eee 102, 47}

—— triangulator ....66. 06-5 367 | —— VaripeS 26... . cee eee 193 luteogaster ........ 102, 47]

trochanteratus .......... 835 | —— varipes ............ 192,194 | Lissonora.................. 273

trochanteratus ...... 334, 336 —— xanthostigma .......... 196 Lissonota oe cece 275

—— vagabundus ............ 359 vanthostigma .......... 192 albispina .............. 278

vagabundus ......0.++-- 358 —— xanthostoma .......... 198 —— erythropoda ............ OF 4

VETHPACiS .... reece ee eee 356 | wvanthostoma ..... 06. 193 -—— erythropoda ............ 275

VEVEPUCAS ove cee evenness 355 | JOPPIDIUM,..............00. 209 —— leucopoda.............. 275

voleanicus.........0005- 354 —ardens ................ 210 —— leucozona .............. 273

VOICANICUS . 6. ccc ee eee 302 eeeruleipenne .......... 211 leuCOBONA .. 6. ee eee 274

_—_—- zapotensis.........+.--- 338 ——donabile .............. 211 | —— pulchra................ 274

Tsobrachium .......ee ees 454, 455 dubiosum .............. 210 LOBOCERAS ...........0.04. o4

—— fuscipenne ............ 211 Loboceras .......... 51, 52, 53, 58

—— ruficolle................ 210 ——calcar ...........0000. 56

JOPPA. cece eee cece eee 191 | —— yucatanense ............ 211° | fuscipenne ............ 57

482

Page

Loboceras klugii ............ 55

——- Mexicanum ......... ... 56

nigricepS ........ eeeees 57

SAUSSUTLL ......... 250s 56

varicome ....... be eeees 54

—— xanthostigma .......... 56

LOBOCERIDES ......ee0.000- 53

LOPHYROCERA ...... eee eee 103

Lophyrocera wo. ccccevccceves 101

nigromaculata .......... 104

stramineipes............ 103

LopHYROIDES ..........446. 61

Lophyrotdes .. 06... ce eee 60, 63, 64

anomalus ...........0... 61

cordoviensis............ 62

godmani ...........06. 62

ruficollis .... cc... sees 62

rUficollis . oe vevceeuae 64

tropicus..............0- 61

Lophyrus cordoviensis ........ 62

UOPICUS oe cee ceeeeeeee 61

LUTNES «0... cece eee eee 124

TUNES ccc cece cee eens 119

cYassicornis ............ 126

CVASSUCOTNIS .......- 125, 127

dromedarius............ 126

—— dromedarius .......0000. 125

longiventris ............ 127

-—— longiventris .........445 125

ornaticornis ............ 125

LYCUSCA vec ccc ccccccceecees 129

Lycogaster oo. cece cee ee eee 434

LLYOCORINA Jock eee cece ee eee 272

(P) apicalis ............ 272

Dydd veeecicccccccencccenes “67

CHEM voce cece eee 67

VANUEGATA Lovee eee cee 67

LYDINA 2... cece cece eee 67

MACROCENTRUS ............ 408

—— delicatus .............. 408

MIACROPHYA oc... eee eee eee 2

Macrophya cece cee cceeee 3

— trisyllaba .............. 2

Megapelmus oo. .cccceccccues 470

MELICANUS woe eve cceccee 470

MFGISCHUS ...........0000e 419

Megischus occ. ccccecccceas 421

GMENICANUS oe cane 419

—— annulator .............. 419

annulator .. 0... cee 430

erythrocephalus ........ 421

NIGEY ..... eee eee eee 420

—— ruficeps ................ 420

TUPCEPS 6.6 e. eee cease 42]

MENISCUS ..........cceeeeee 272

INDEX.

Page

Meniscus (?) alternatus ...... 2738

crassitarsuS .....6....06+ 272

———— MEXICANUS... 2. eee ees 2738

(?) orbitalis ............ 273

MESITIUS ........-.0006 455, 473

longicollis....... 4 .. 455, 478

MESOCHORUS ...........04- 310

Mesochorus .... ccc cece eens 277

fuscipennis ....... 0005s 277

—— totanacus .............. 310

MESOLEIUS .......00-.00eee 284

——— costaricensis............ 284

—— montezuma ............ 286

zapotecus ...........04. 285

MESOLEPTUS...... vee ee eee 281

alpestris .............. 282

@lpestris..... cece eee 283

—— (?) anguina ............ 284

AZtECUS ....... 0. ee ee aes 281

bardus ........... 0000. 282

—— (?) bucephalus.......... 284

calidus ............000. 281

decorosus .............. 282

emaceratus ............ 282

guatemalensis .......... 283

imbecillis .............. 282

melleus................ 281

mexicanus ............ 281

——— MEXICANUS .. eee 282

——- persimilis .............. 283

MESOSTENUS .......... 214, 47

Mesostenus.. 201, 202, 229, 244, 247

abactus ....... eee eee 227

—— absolutus .............. 227

—— acceptus .............. 220

—— admirandus ............ 224

—— admonitus.............. 217

——admotus .............. 224

—— animatus .............. 228

—— annulitarsis ............ 215

——— arctus wo... ee eee 215

—— arcuatus .............. 224

——— azteCUS ......0.. 0.00008. 218

—— brachygaster........ 219, 471

—— chichimecus............ 224

—— chiriquensis ............ 218

— collaris ................ 228

—— communis.............. 221

——. COMMUNIS L 6... eee. 222

—— compactus.............. 218

—— corpulentus ............ 223

— costaricensis............ 225

—— costaricensis ..........4. 226

—— discus ................ 218

—— euryaspis .............. 226

facilis .......... ec. cee 218

Page

Mesostenus fraternans ........ 220

Fraternans....cceccccces 221

Incertus...... cece ee ges 228

intrudens ............4. 217

lamentarius ............ 219

—— lamentartus wor cececcees 220

lassatus......... eee eee 227

longipeS ......e eee eaee 225

megapoda......6...eeee 224

melanoleucus ..cceeceee 231

—— mexicanus .........66. 227

—— modicus ........-.044. 221

——— montezuma ......-..06- 221

Moratus..... cece eee eee 227

NICATAGUENSIS vse. eevee 225

nigerrimuUs ............ 215

—— nigrispina.............. 223

—— novatus ....... cee aoe 227

—— ornatifrons ............ 221

——— ornatifVOn& 6... eee eeee 222

parvituberculatis........ 228

pertenuis .............. 228

—— pompiliformis .......... 214

pomrpiliformis ....ee. ees 215

propinquus ............ 218

striatifrons ............ 222

stupidus ............6. 227

veTepacis ... 0... ee eee 220

ViVIdUS ..... 0... . eee eee 216

VIVIITUS oo eee cee 217,

vanthothorax .......44. 2438

METOPIUS ...........00 ee eee 278

—— femoratus.............. 278

scutifrons ...........-6. 278

MICRODUS....... cece eee ee 401

Microdus ..ccivcccceves 400, 407

albitarsis .............. 406

albitarsis ... ce cee cee 405

——basimacula ............ 405

— basimacula ........ 401, 406

—— championi.............. 402

championt 1.00.66. 401, 403

COXA]IS 2.2... ee eee eee 4035

COVMANS Lecce ccc ene ecues 401

femoratus .............. 404

—— maculipes .............. 404

—— melanocephalus ........ 406

——melanostoma .......... 401

—— montivagus ............ 407

—— Montivagus oo... ce eeeee 406

—— peronatus ............0. 403

POTONAUS 6 reece cvnees 401

—— pulchripennis .......... 402

pulchripennis ...... 401, 403

simulatrix ............ 405

MICROGASTER ...........-4. 397

Microgaster mexicanus

MIcROGASTERINE

Monomacuvs

ene er sere e vere

Ce 2 cy

MoNOPHADNUS

Monophadnus

ee ry

Ce ey

—— annulipes

Cr ef

—— fumosus

Ce ee

re ey

~—— longipennis

melanosternus ..........

——- Mexicanus

—— scutellatus

—— testaceus

—— trimaculatus

violaceipennis ..........

eooe ee en est toons he er oo

er ee ee

Ce ee

eee eens earner

Pe ee

1 oe... 809

NotTorracHys

Pr ee

eevee vere er seo see

Pe ee ee

eset reer eenesoone

ODONTOBRACON

INDEX.

Page

Odontobracon montanus...... 384

—— montanus .......4.. 385, 386

NIQTICEPS .......e eee eee 385

NUQFUCEPS ver reacceerves 384

Odontomerus oo... cece cee 272

ODONTOPIMPLA,.......-..445 272

pulcherrima ............ 272

(EDICEPHALUS ............-5 187

—— glucidatus.............. 188

gracilicornis............ 188

longicornis ............ 187

SOFOTIUS.. 6... ee eee eee 188

VICINUS 2.6... cee eee ee eee 189

OLIXON woe... eee eee ee eee 412

testaceum .............. 418

OPHION ........ cece eee eee 290

Ophion ....... eee 293, 297, 299

ancyloneura ..........., 294

chiriquensis ............ 294

Chloris oo. c cece aes 302

—— (Eniscopilus) concolor .. 291

——_ concolor... sc ceees 291, 2938

—— curvinervis ............ 298

—— CUrVINETVIS ve. e eae 290, 294

—— flavo-orbitalis .......... 294.

—— flavo-orbitalis .......... 295

(Eniscopilus) flavo-scutel-

latus 2.0... ce ee eee eee eee 291

Jlavo-scutellatus ........ 291

—— (Eniscopilus) flavus...... 292

JAVUS occ cece. _ 292, 293

—— (Eniscopilus) fuscicornis.. 291

YOMMALUS LL. cee ee eee 302

(Eniscopilus) guatemalen-

SS 293

(Eniscopilus) maculipennis. 292

—— melanostigma .......... 295

-——— (Eniscopilus) mexicanus.. 290

MELICANUS 6... eee cee 290

—— (Eniscopilus) monticola ,, 292

MUNAUS . cece cee cecnns 298

—— (Eniscopilus) thoracicus.. 291

thOracteus .. 1... eee eee 291

OPHIONINA oo... eee e eee eee 288

OPHIOPTERUS ..........-545 296

Ophiopterus 2.0... ec eee ee 299

—— ferrugineus ............ 296

—— fuscipes................ 296

———— NIQEY .o see eee eee ee eee 296

—— striatifrons ............ 297

OPIUS... 0... ee eee ee eee eee 409

mexicanus.............. 409

ORASEMA 10... ee eee e eee eee 104

Orasema,... ce. cee eens .. 101, 135

stramineipes............ 105

ORTEZIA cece ee eee ee eee 189

BIOL. CENTR.-AMER., Hymenopt., dugust 1900.

Page

Ortezia aciculata .......+.... 189

CRTERTA Lo. ese e eee e eee 189

ORYSSIDE oo. cece eee eee eee 69

ORYSSUS ......e cece eee eee 69

———— mexicanus ............ 69

——— Nigricans ...........66- 69

PACHYLOTA 10.0... cee eeeees 51

QUMOUINE oo. ccc eee eee 51

SUICICOYRNIS 6. eee 51

—— varicolor .......-...4-- 51

PAMPHILIUS 2... .0. ee eens 67

creditus.........0. eee 67

—— varlegatus............6. 67

PANISCUS 2... 0... cece eee ues 302

geminatus.......-....6. 302

——— JEMINALUS oe eer cccaes 303

—— melanostigma .......... 3038

TUJUS cece eens 302

tinctipennis ............ 303

PARALASTHIA ......-0 0 cee 110

—— mandibularis .......... lil

PARAMESIUS ..... 0.00.00 00ee 437

—— canaliculatus .......... 439

chiriquensis ............ 439

fasciatipennis .......... 437

—— maculipennis .......... 438

PARASIEROLA ...... bee ee eee 454

——— lata... cee eee eee 454

OPAC... cece eee ee eee 454

palliditarsis ............ 455

PARASITIC J... ec eee eee eee 72

PARNOPES . 0... 0. cece eevee 466

Chrysoprasina ...,-...65 466

CAwardstt .occcccceceee. 466

— fulvicornis ............ 466

PARNOPINAD wo. eee cece eens 466

PATROCLUS 2... cece eee ee 136

—— lectus... ... ccc cece ke eee 136

nigroceruleus .......... 136

toltects..... cee eee eee 186

PELECINIDE occ ec eee ee cee 435

PELECINUS ...e eee eee wees 436

Pelecinus vec csvcvcevavcuce 429

ClAVAtOr oo wees 435

politurator .........06- 435

polycerator .....-..005 435

—— polyturator ............ 435

——~ thoracicus............ .. 485

CUDUALOT oe cect eee 435

Pelecystoma ..cscceccvccees . 390

PERANTHERIX .......0. 00005 58

Peranthertz .......ceeeeee 51, 60

bimaculata ............ 59

westwoodli ............ 58

Perga ......5. veces ences 51, 52

484

Page |

PERILAMPINE ...... .... 185, 471

PERILAMPUS......0:eeeeeees 471

Perilampus. ccc ccccceec ene 135

antennatus ....., seeeee 471

GlOrtOSus Lee eee eee eee 135

——— mexicanus.............- 47]

PERREYIA 00... eee eee eee 63

Perreytd. vv ccccccccccccees 52, 60

ANOMAIA Lie ce ceececnes 61

capitula.............00. 63

CAPUlUM oo. cc ccceeerees 63

— championi.............. 64

CRAMPIONE oe cece eaeeee 63

—— compta .......... beens 63

COMPLE wivcvcvcevces . 61, 64

PERREYINA ....... ee cee eeee 60

PETIOLIVENTRIA ..........-5 70

Pharsalia albofacialis ........ 473

PHASGANOPHORA ............ 97

Phasganophora .....ceeceee 78, 98

——condalus .............. 98

CONIGASEV A... eee eee eee 98

crassicauda ............ 99

——rufitarsis .............. 98

—— rufiventris.............. 98

———— ThOVaCICA oe ee ce ae 78, 98

PHYGADEUON ...... sete eee 212

PRYGAMCUON vec c ccc eee nnes 202

——albicollis .............. 212

—— alpinus ................ 213

—— alpinus oo... cc cece ee eee 212

—— melanopoda ............ 214

-—— melanopoda .......0000 212

—— satageus ....... 0.0008, 218

——— SULAGJEUS vee eccacavees 212

—— semifumatus............ 212

—— zapotecus .......... vee 218

RAPOLECUS . 6... cece eee 212

PRYOR occ cece eee eens 409

PHYTODIETUS ..........005- 275

AZLECUS ... eee ee eee 276

—— bellus.................0. 277

CTESSONL. 6... ee ee ee ee eee 276

gracilicornis ....... wees 276

guatemalensis .......... 276

—— (?) jucunda ............ 277

MEXICANUS.......... 000 276

- orbitalis.............00. 277

—— orizabensis ............ 276

PIMPLA . occ eee eee ee ee eee 265

Pimp voce cc ccc cee 270, 272

albipes ............000, 267

albo-marginata.......... 267

—— argentifrons ............ 269

atricepS..........0.008e 269

—— AZtECA wee eee eee 268

INDEX.

Page

Pimpla braconoides .......+++ 269

—— caruleata ........020 eee 266

——— seruleata .... cc eee eee 265

——(P) chichimeca.......... 268

CONSIMILIS oo. eee eee 265

—— cCoxata ....ccssccceeees 267

—— comator oo. ccc eens 267

—— crassicauda ........++.. 267

—— CYESSONL ..... eee eee eee 269

—— croceipeS .......eeeeeee 266

feralis oo. e ccc cee w eee 266

ichneumoniformis ...... 268

—— laevigata wo... cceeeeeee 272

UiNCALA oo eee cee ee eee 264

—— marginipennis .......... 268

Mexicana ..........008. 266

MODESA. Loc ec cceeenee 266

—— montezuma .........6.. 266

so =(P) pulcherrima.....ceeee 272

m+ puniCIpeS 26... ee eee eee 266

sedula ....... ccc eee eee 265

—-— semisanguinea .......... 268

—— sumichrasti ............ 268

—— xanthostigma .......... 269

—— Zapoteca ..........000, 268

—— zonata ........ cee eee 268

PIMPLIN 6... ccc eee ee eee 260

PCECILOSTOMA ....--... ce eee 34

—— inferentium ........066. 34

mexicanum ........ , 34

Poceilostoma oo... ccc cece ees 34

POLYANUS .... ee eee ee eee 244

—— ablatus .... 0... 2... cee 244

—— basimacula ............ 246

—— championi..... beveeeeee 245

ectypus.............00.. 244

nitidiusculus,,.......... 245

—— orizabensis ....... veaee 246

volcanicus...........66. 247

POLYBLASTUS .........-400- 287

Polyblastus wo. ccc cece eee 286

(P) aztecus.............. 287

POLYCYRTUS .....-.. 0000000 229

Polycyrtus occ c cece cece ceeee 244

accuratus ...........005 239

A@CEYDUS 0.0... ee eee 237

—— atriceps................ 241

GLTICEPS . cee eee 242, 244

—— blanditus .............. 235 |

— blanditus ........c eee 229

canaliculatus .......... 234.

canaliculatus........ 230, 235

—— chiriquensis ............ 242

—— chontalensis .........,.. 236

chontalensis ,,...... 229, 238

—— collinus................ 231

Page

Polycyrtus collinus .......... 229

confirmatus ............ 232

confirmatus ..........65 229

copiosus ............6. 239

cruciatus ............4. 232

CYUCLAAUS LoL cece ee ee eee 230

—— curvispina.............. 244

——— CUIVISPINA. 6. ec ceeee 242

curviventris ............ 245

erythrosternus .......... 241

erythrosternus ...... 240, 242

ferox .... 2.2 ee eee eee 232

fulvipes......-.....000. 238

Sulvipes oo. cece eens 230, 289

fulvofemoratus.......... 233

—— fulvofemvratus ...... 280, 234

furvus ........e.. ee eee 239

guatemalensis .......... 237

—— guatemalensis ........4. 229

—— hastrio wo. cece e eee ane 240

——— junceus ...........6..6. 236

MACEP oo. cee ee ee ee eee 237

MAJOL.. ccc cece scene eens 232

—-— MANCUS ...........0006. 238

melanoleucus .......... 231

—— montezuma ............ 234

—— montezuma ........ 230, 235

NUGVUCEDS ss seceee. 242, 244

—— nigritibialis ............ 238

—— nigritibialis ........44.. 229

obtusispina ............ 230

—— pallidibalteatus ........ 240

—— pallidus. .......... eee 240

—— paululus .............. 236

reliqUus........ cece eee 239

—— rufiventris oo. .cercees ... 24)

tinctipennis ............ 241

univittatus ..........4. 240

—— xanthothorax .......... 243

POLYMORPHI .............. 408

PRIONOPELMA ........06. -... 184

pilipes ............-04. 134

PRISTOMERUS .........00005 310

—— mexicanus...,.......... 310

PROCTOTRUPIDE .........04. 435

Psilogaster ... 0. ccc cee eee eee 104

De 0, 42

Ptenus biramosus .........645 42

PTEROMALINE ......6-...06- 129

PTILIA wo. ce eee eee eee 43, 468

Ptilia occ cece cee e ewan Seen 42

bastpunctata .......00.4. 44

—— brramosa ....... cee eee 42

COMPFESSICOTNIS. 62.6000 0s 45

—— concinna .............6. 44

crassula..........-.eee: 468

Page

Ptilia filiformis........00... . 48

fusca .........0000. +. 45

—— imitatrix oo. cee. 42

—— luteiventris ............ 468

—— nasuta ................ 44

nigerrima .,..........0. 469

: versicolor ............2. 44

PYGOSTOLUS ................ 4]0

(?) sonorensis .......... 410

Pyria tridens ....... 60 ee 462

RETANISIA... 0.0... e eee eee 299

Retanisia ... 0.6 cee 311

—— facialis ................ 299

RHOGADINE ...........0005. 386

RHOGAS.......... 0000. 389, 472

Rhogas ............ 390, 391, 392

bugabensis ........ 391, 472

fumipennis ............ 389

—— melanocephalus ........ 391

—— mexicanus.............. 389

SonorensiS............-. 390

Ruyssa........ see eee eee 260

Rhyssa .......... vee e ceca 262

carinifrons.............. 261

nigritarsis............65 260

NIGVILAVSIS oe ce cee eee 261

ROGUS ec cence ees 389

RUSOOvIA cee 43

SCELIO .... eee cece eee 436

erythropoda ............ 436

SCELIONINA ... 0. ec e ee ee es 436

Schizaspidia 6.6... 0... cee 103

fluviventris sec e eee eee 471

—— furcata oo eeiceccccecees 471

—— luteogaster... 00.6... eee 102

SCRIZOCEVA oo cece cece aee 45

Sclerochr 0d... ceca sec eee 448

SCLERODERMA .........-0055 448

C0) 0) 448

Sclerodermus 0.0.0.0 cc eeeee 448

SCODING occ cece cece cree ecacs 43

SCOLOBATES ............0. ... 310

—— (?) varicornis .......... 310

VAVICOINIS vice vce ecccaes 311

SELANDRIA ....e eee e ee ee eee 18

Selandria oo... cece ce ges 4,19, 22

Oarda cc. ce cee eee 23

coccinata ........ cena 20

CTASSH vee eee eee ee eee 19

CYASBA vce eee eee eee 20

curialig .........0.208.. 18

—— diversipes ........ 16, 18, 20

INDEX.

Page

Selandria dubia... ......cc ees 28

—— fascipennis ........64 . 28

flavipes ........0...006- 18

—— glabra ..............4. 18

MCONSPICUA .......-6- 7,18

leucopoda ...........06- 19

longipenmMs .......000.. 27

luteola .......-....000. 18

MOERUICUNA Coc e ccc cccees 29

—— mutica .............065 20

NIQTIPES.. 06... eee ee eee 20

NUGYTUPES oo ccc ve vcvvaes 21

1 x rr 26

ruficollis ..........000. 21

—— sumichrastt oo... ccc eee. 31

varitarsis ............ .. 21

SELANDRIADES............. . 2

Seminota oc ccc cece cvccues 434

SERICOCERA .......ee eee eee 45

-—— alternator.............. 46

alternator .... 0.0. c cee 47

—— cwrulea............000. 49

crassitarsis ............ 50

edwardsil .,.......2..6. 45

CdWAard8ti oo. ce ccc eee 46

wma tA Le eee 48

leucopoda.............. 48

leucotarsis .......... .. AZ

—— mexicana .............. 46

NGPA cece ccc ccnee 50

——— ptctventrts oo. eee eeccans 50

plumicornis wo... eens 47

Quercus ...... ee cee eee ee 46

—— rufiventris.............. 49

tYUNCATA Lo. eee ce eee 49

—— truncata oo... eee eee 50

villosa oo... eee ee eee 47

VUULOSE Lecce cece ace 48

SESSILIVENTRIA .........05. 1

Sterola cocci c cece cece eees 454

SIOBLA ve. eee ec ee ee erences 2

St0OlA oo ccc ee ce eee 3

ornaticornis ............ 3

SIREK cee cece cece eee eee 68

SUED cece c eee 100

flavicornis.............. 68

—— fulvus .......... 20. 68

SYRICIDH wo. eee eee eee 68

SIRICINA ..... eben eee eens 68

SMICRA wo... eee eee ee eee 78, 470

SMIUCIA cece cece 77, 97, 98

abdominalis ............ 94

adaptata ..... ce ceee eee 87

AMbIGUA Loe. eee e cece 94

ATd€NS ...... eee eee 470

armillata .............. 471

Smicra azteca .....

captiva .......

—— cardinalis .....

centralis

—— championi.....

—— coccinata .....

—— compactilis ...

conjugens .....

delicatula .....

dimidiata .....

divinatrix .....

divisa.........

eeeee

—— erythrina .....

exornata .....

fasciola.......

ferruginea.....

flammeola.....

—— flammula .....

fulvo-maculata.

fulvo-maculata .

———~ fulvo-variegata

geniculata.....

geniculata .....

juxta.........

lamyrus.......

lauta ........,

—— maculicollis ...

—— maculipennis: .

—— maculipennis .

—— marie

— mendica

—— mexicana .....

—— miniata.......

—— miranda .....

—— montezuma ...

—— nigrifrons .....

—— nigriventris ...

—— nigromaculata .

—— obtusiventris .

—— obtusiventris ..,

—— octodentata ...

— octomaculata .

—— panamensis ...

petioliventris .

pompiloides ...

pulchra.......

—— punctata .....

—— pylas.........

quadridentata .

ee eee

CC oe

ee ee eae ee

a ey ead

ete eeeae 88

486 INDEX.

Page Page Page

Smicra sexdentata .......... 81 | Strongylogaster nigriceps .... 11 | Thyreodon maculipennis...... 289

— sicheli .............4.. 82 nigricormis .......+-+.- 13 CO 289

—— tenebrosa .............. 95 | —— nigricornis........ 12,14,15 | ——~ morosus................ 289

transitiVa os... cece ee aee 79 | —— nigritorius...........4.. 14 MIPEY . 2. eee eee eee eee 288

—— trituberculata .......... 85 picticornis.............. 4 ornatipennis ............ 290

trituberculata .......4.. 86 Pilicornis ........ eee ees 8 principalis.........eees, 289

tolteca ...... bee eeeeeee 87 — pilicornis ...sceeeeeeees 9 rufitborax ............. 290

toluca ........e eee .. 95 | ——pilipennis.............. 8 | THULEA...............0008 60

Solindenta oc... cc cccceeeeeee 125 rogenhoferi .........065 467 NIQT@ 6... eee eee eee eee 60

SPALANGIA ....... 0.00 ee eee 110 ruficollis ........+..56- 15 | ToryMIn@® ................ 105

chontalensis »........... 110 ruficolis oevecceceecees 14 | Torymus ....-.....0. 77, 78, 107

SPALANGIINE oo... cece eee, 110 testaceicornis .......... 7 | ToXONEURON .............. 41]

SPATHIINE ...... eeeeeeeee 3879 | —— tibialis ............4... 18 | ——ethiops............00.. 411

SPATHIUS ........ 0. eee eens 379 tibialis ..... 6. eee 12,15 CrOCceUmM .. eee eee eee 412

fuscipes.............08. 381 | ——v-flavum .:............ 5 mexicanum ............ 41]

——— fUSCIPES Loe eee ceccccnns 3880 —— VlAYUM vere ec evccvaes 7 OVIZADS ... eee eee 411

ornaticornis ............ 381 | SYNERGUS........e-0-e ee eee 72 oratum . 6... eee eee eee 4]]

OFNGLICOTNIS 6.0.6... 00. B80 | Synergus ..eeceeerescccvees 469 seminigrum ............ 411

striatifrons ............ 382 dorsalis .........eeceeee 72 thoracicum ............ 41]

tinctipennis ............ 379 | ——filicomis .............. 72 | Trachynotus ........6.0.6 05, 295

Sphex sispes occ. ceccevceens 78 | SYNTOMASPIS ...........00. 107 FUSCALUS ee eee eee ‘eee. 205

Spilochaleis oc cceceeeceeees 78 maculipennis .......... 107 | Tratlia 1... eee eee eee eee 45

SPILOMICRUS....... 00-0. e cee 440 | Syzygonia ........000. 51,52,58 | TRIMORUS............+.06., 436

tinctipennis ............ 440 | SyzyGONIDES ...........4.. BQ | Trimorus ....ccc cece ee eees 437

Stephanus oe ceccvcccccccaues 419 | SYZYGONINA......0...00e eee 51 luteus... .eeseeeeseaee 436

STEPHANIDAD oo... cee ee eee 419 TRIGONALIDE .........00065 434

Stilbuld oo. cece ccc e cee eees 104 _ | TRIGONALYS ............ 434, 472

VOIUBUB vee ever eecenee .. 104-> | TENTHREDINA ........ wees 1 apicipennis .........+.. 472

Stilbwm oo. .cccees eee e ee eee 460 | TENTHREDINIDE ............ 1 —— championi...........44. 472

amethystinum ....6..045 460 | TENTHREDINIDES............ 1 fasciatipennis .......... 472

STRONGYLOGASTER ........ 4,467 | Tenthredo .......0.00000.. 2,85 Havonotata ............ 472

Strongylogaster ........ 2, 3, 18, 20 TL 4 —— laviceps ............., 434

apertus ......... eee eee 4 COTAUETA vevcccccceeaes 28 | —— maculifrons ............ 472

—— bicolor ............006. 17 | Tenthredoides....... Lee eteas 4ll mexicana .....-...+-06. 434

—— diversipes ............0. 16 SEMINIGEY oo. eee ceceres 4] ornata ..... tener renee 434

frontalis .............. j1 TEREBRANTIA ......000ceees 70 scutellaris .............. 472

——- fulviventris ............ 14 Thaless.....ccccevececes ... 260 TTUgOnurd oo ceerccecrcceeens 97

——~fumipennis ..........,. 467 Theocolax oo... ccc cce cca e eens 111 —— crassicauda ........4... 99

—— fuscipennis ............ 15 | THERONIA.......c ccc cece eee 263 | TroGus..............0...4. 189

— fuscipennis .......6.. 14,23 | —— chiriquensis ............ 264 | Trogus ...ceceeeceeeees 186, 191

illuminatus ............ 6 | —— consimilis.......... 0. 265 blandita.........-. eee 191

inconspicuus............ 7 lineata ............000. 264 blandita ...... bees eees 189

——— RUS cece 7 | ——montezuma ............ 264 CRCEIIENS . ee ceseeeerees 189

—— leucostoma.......... 12,467 | —— tacubaya .............. 965 | ——imnelyta ................ 191

lineatus..... Lecce eee eee 17 | ——tolteca ................ 264. INCA vee ceccccceccecs 189

——— luteus ...... Vee eeeeees 12 toltecd .... cece cee eeee 265 latipennis .............. 190

——— maculipennis .......... 9 | Thoracantha ...........004.. 102 | —— latipennis ........... ... 189

——— melanocephalus ........ 10 | THyrEopon ..... be neas eee. 288 ornaticornis ............ 190

——— melanocephalus.......... 11 Thyreodon ....... Ca eeeeueees 299 OPNAEICOINIS oo cece veces 189

melanostoma ........ 10, 467 CYANCUS Lecce cee eae 289 pulchripennis ....:..... 191

—— meritorius.............. 14 | -——erythrocera ...... veces, 288 | ——— pulchripennis .......... 189

meritOriUs ... 0.6... ae. 12,15 erythrOcera ..... ec cece 289 | TRYPHON ............0-000. 286

——— Nigredd ..... eee eee eee 17 GTACS Coe ccc cece 289 Tryphon....eee. bee eeeeneee 284

——— nigricans .............. 16 RC 289 —— croceiventris..... seceees 280

Tm NIGFICANS wireseseseeess IZ laticinctus ..... beeen . 289 | ——(?) laticinctus .......... 287