INTRODUCTION.

In this Volume twelve Families of the section Fossores of the Hymenoptera Aculeata

are dealt with—Sphegide, Ampulicide, Larride, Nyssonide, Bembicide, Philanthide,

Mimeside, Pemphredonide, Crabronide, Pompilide, Scoliide, and Mutillide. It was

commenced by Mr. Cameron in 1888 and concluded in 1896, a short Supplement

having been added last year. Mr. H. H. Smith’s earlier collections of Fossores from

Mexico, as well as those made in Yucatan by Mr. Gaumer, were fortunately received

in time to be included, the additions subsequently sent not being very numerous.

Hence, a much more varied material was available for study compared with what we

had for Volume I. at the time of publication, and probably our enumeration in this

case is relatively more complete. |

It is to be regretted that so many of the previously described Mexican Mutillide

remain unrepresented or unidentified in our collection, and the same remark applies

with still greater force to the Ichneumonide, dealt with in Volume I.

Altogether 711 species are enumerated, of which 391 are treated as new, the total

number for each Family being as follows :—Sphegide, sixty-seven, with thirty-seven

new; Ampulicide, two, with one new; Larride, fifty-two, with thirty-nine new;

Nyssonide, thirty-two, with twelve new; Bembicide, twenty-six, with two new;

Philanthide, fifty-four, with twenty-eight new; Mimeside, eight, all new; Pemphre-

donide, three; Crabronide, twenty-four, with twenty-two new; Pompilide, 163, with

seventy-eight new; Scoliide, fifty-nine, with twenty-seven new; Mutillide, 221,

with 137 new.

Ep.

August 1900.

LIST OF PLATES.

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

FOSSORES. Ammophila morrisoni (¢ genitalia)....} IT. 10 21

plcelventris ......... eee ee eee IT. 7 22

1.) ar II. 8 22

SPHEGIDE. Pelopceus ceementarius .............. II. 9 24

Ammophila miliaris ................ I. 1 3 118 9 (0 IT. 11 25

— (od genitalia) ............ I. la 3 || —— (o genitalia) ............ II. lla 25

sp.?, near miliaris (d genitalia) .. I. 6 4 || Chalybion zimmermanni ............ IT. 12 25

gaumeri (¢ genitalia) .......... II. 2 4 (od genitalia) ............ II. 12a 25

centralis 2.0... . eee ee eee eee I. 12 6 || Trigonopsis violaceus ..............-- II. 13 26

— (o genitalia) ............ I. 12a 6 || Podium albovillosum ................ IT. 14

aureo-notata ...........0.0 000. I. 11 7 || — (od genitalia) ............ IT. 146

— (od genitalia) ............ I. lla 7 || —— luteipenne .................6.. II. 15

—— ceres (¢ genitalia) ............ I. 10 8 || —— bugabense .............-0--00- Il. 16

—— xanthoptera* ................ I. 4 8 bellum ........ cece eee eee ee II 17

——— championi .............. 2.00 ee I. 3 9 rufipes ..... ee eee eee eens IT. 18

—— alticolat (¢ genitalia).......... I. 9a 10 || Sphex erythroptera, 9 ...........6.. IIT. 1

—— trichiosoma (¢ genitalia)........ I. 13 11 || —— (do genitalia) ............ IIT. la

picipes (¢ genitalia)............ IT. 4 11 || —— beata, Qo... ee eee eee eee III. 2

consors ( ¢ genitalia) .......... IT. 3 12 || —— (¢ genitalia) ............ ITI. 2a

—— nigro-cerulea ........ 2. ee ee L 8 12 hirsuta, Qo... cece ee eee eee eee ITT. 3

—— montezuma ( ¢ genitalia)........ I. 15 13 || —— (oS genitalia) ............ III. 3a

——— COTA nce eee cece ce ne eee I, 18 14 || —— guatemalensis, 2 .............. III. 4 32

— (o genitalia) ............ I. 18a 14 || —— (od genitalia) ............ ITT. 4a 32

—— fragilis (¢ genitalia) .......... I. 5 15 || —— tinetipennis, @ ...........-.00- III. 5 32

—— gracilis . .... 0... . eee eee eee I. 7 16 chichimeca, G «1.1... se eee eee III. 6 33

— (o genitalia) ............ L 7a 16° || —— (o genitalia) ............ IIT. 6a 33

volcanica, Q 1... ee ee ee ee ewes I, 19 17 || —— singularis, J... ... eee eee eee ITI. 7 33

—— chiriquensis, 9 ................ I. 9 18 || —— ——(c4 genitalia) ............ III. 7a 33

——— VaTIPES o.ee e eee ee I. 17 19 || ——ichneumonea, 9 .............. III. 8 34

—- (od genitalia) ............ I. 17a 19 || —— ar. IT. 8a 34

—— comanche ...........-.--..eee I. 14 19 || —— azteca, G ..... eee ce eee eee ITT. 9 35

—— montana (d genitalia).......... I. 2 20 } —— (od genitalia) ............ IIT. 9a 35

——— jason, Qo. eee cece cence II. 1 20 || —— costipennis, ¢ ...... sess aeee III. 10 35

—— alpestris (d genitalia) .......... 1. 16 21 || —— robusta, J... eee ee ee eee ITI. 11 36

—- Lecce eee eee teens eens II. 5 21 || —— thoma, 2 ........ eee eee e ees III. 12 36

SOMOreNSIS .. wwe ee ee ee II. 6 21 |; —— (od genitalia) ............ III. 124 36

* Ammophila zanthoptera on the Plate.

t+ Ammophila chiriquensis on the Plate.

Vili LIST OF PLATES.

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

A Gorytes alticola .......... 00s ee eee V. 21 81

MPULICID A, —— alpestris........-- eee eee eee Vv. 22 83

Ampulex angusticollis, 2 ...........- III. 13 37 || —— (od genitalia) ............ Vv. 22¢ 83

(od genitalia) ............ III. 13 4 37 centralis, Q 1.2.2... eee ee eee VI. ] 84

Rhinopsis maculicornis, 2 ............ III. 14 38 || Mellinus pygmeus ..........-+ 000s V. 5 85 |

alpestris.. 6.6... cece ee ee ee ees V. 6 85

Larripz.

Trypoxylon cinereum, 2 ............ IV. 1 40 BewprcrpZ.

(od genitalia) ............ IV. 16 40 || Sphecius speciosus, Q .....--. ee eee VI. 8 91

AZTECUM.. 6... ee eee ee eee IV. 2 41 || Steniolia * longirostra, Q .........--- VI. 10 92

—— fulvipes ........ 0... cece eee IV. 3 42 (od genitalia) ............ VI. 9 92

balteatum, QQ) .... eee eee IV. 4 43 scolopacea, So wees cette eee eeee VI. 11 94

apicipenne ........ 60... eee eee IV. 5 44 (¢ genitalia) ............ VIL lla 94

cinereo-hirtum ............006- lV. 6 44 || Bembidula discisa, 9 ...........5-+5- VI. 12 95

SONOFENSE .......... ee ee ee eee IV. 7 45 (od genitalia) ............ VI. 13 95

SPINOSUM ....... ee eee eee eee IV. 8 46 || —— variegata, Q ........ eee ee eee VI. 14 96

— (do genitalia) ............ IV. 8b 46 || —— burmeisteri, 2 .........- ee eees VI. 15 96

palliditarse .............0000. IV. 9 48 (od genitalia) ..........-. VI. 16 96

Larra godmani, 9 .............0000 IV. 10 49 || Monedula heros ...........0 0200 eeee VI. 21 98

rufitarsis (dg genitalia).......... IV. 11 50 surinamensis, Q .......-seeeee Vi. 23 98

Notogonia violaceipennis, 9 .......... IV. 12 51 signata (¢ genitalia) .......... VI. | 22 99

beata, Sk eee eee ee ee ee ee IV. 13 56 || —— punctata, Q ...... cece eee renee VI. 25 99

chrysura (d genitalia).......... IV. 14 57 (od genitalia) ...........-. VI. 24 99

—— argenticauda, ¢ ............6- IV. 15 58 || Bembex multipicta, Q ..........-+6- VI. 18 100

—— apicipennis, 9 .............08. IV. 16 58 (od genitalia) ............ VI. 17 100

— (od genitalia) ............ IV. 16a 58 || —— monodonta, G ......se eee eens VI. 20 101

panamensis ( ¢ genitalia)........ IV. 17 59 | —— (o genitalia) ............ VI. 20a| 101

Tachytes yucatanensis, ¢ ............ IV. 18 60 nubilipennis, Q .... eee ee eee VI. 19 101

guatemalensis ................ IV. 19 60 || Stizus agilisf..... 6. eee eee ee eee eee V. 8 102

andreniformis ............-.-. IV. 20 61 lineatus, Gwe eee ee ee ee ees V. 7 103

ornatipeS ........ cece eee eee IV. 21 62 flavus, Go... cee ee ee eee ee V. 9 103

ferrugineipes ( ¢ genitalia) ...... IV. 22 63 || —- (¢ genitalia) ...........- V. 9¢} 103

| Tachysphex rufomaculatus, 9 ........ IV. 23 64

| Astata albovillosa, 9 .............0.. Vv. 3 65

apicipennis ..............-6-- V. 1 66 PHILANTHIDE.

kohli .......... 0. eee eee eee V. 2 68 || Aphilanthops marginipennis, d ...... VII. 1 105

alpestris.... 0... cee eee ee ee V. 4 69 punctifrons 22... cece eee eee VII. 2 106

Cerceris binodis, Q «1... ee ee eee eee VIE 3 107

& genitalia) ............ . é 107

Nyssonip a, toltecs, o° Loeveeaeeueeeeuneess vil. | 4 | 109

Gorytes bipunctatus ................ Vv. 11 71 strigosa, Q ww kee eee ee ee eee VIL. 5 110

fuscUS .... ieee eee eee V. 10 72 || —— maximiliani, 9 ..............6.6. VII. 6 111

maculipennis...............005 V. 12 73 geniculata, Q 6.1... ee eee eee eee VIL. 7 113

| —— punctifrons .................. V. 13 74 || —— chiriquensis, 9 ...........-005- VII. 8 114

fasciatipennis ................ V. 14 75 flavomaculata, 2 ...........0.- VII. 9 115

| —— mexicanus..................4. Vv. 15 76 Otomia, Qo... eee ee eee ee ee Vit. | 10 116

spilopterus, @ ................ V. 16 77 || —— marginata, Q ...- esse wesc eens VII. | 11 117

}——— montanus .................... V. 17 77 || —— mexicana, 9 ..........0- eee VII. | 12 117

— (o genitalia) ............ V. |176,c| 77 || ——— huastecw, 9 «1.1... .. cece ee eee VII. | 13 118

handlirschi ...............0.. V. 18 78 || -— semipetiolata, Q .............. VII. | 14 118

——-fuscipennis ................-. V. 19 79 obsoleta, Q 2... eee eee eee eee VIT. | 15 118

balteatus .. 1... . eee ee ee eee V. 20 80 || ——-- montivaga, Q ....... cee e wees VII. | 16 119

* The name of this genus is incorrectly given as Steniola on the Plate.

t Stizus godmani on the Plate.

LIST OF PLATES.

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

Cerceris smithiana, 9 .............. Vil. | 17 119

subpetiolata, 9 ............065- VII. | 18 120 C

—— truncata, Soo... eee eee eae VII. | 20 | 121 BABRORID 2.

—- A VII. | 19 121 | Crabro saxatilis, 9 ........ ee eee IX. 1 142

——imperialis, 9 ............024- VII. | 21 122 championi, Q .......-.0.. eee TX. 2 142

OSAU, Doc ecac cree cece cree eeee VIII. 1 123 atitlane, Q ow... eee ee eee IX. 3 143

acolhua, Go... cece eee ee VIII. 2 124 sonorensis, Q «ow... eee eee eee IX. 4 144

curvicornis, S ...... cee eee es VIL. 3 124 || —— montivagus, 9 ...... Lecce eas IX. 5 145

— (od genitalia) ............ VII. 3a| 124 | —— (od genitalia) ............ IX. 5a| 145.

hebes .. 2... eee eee eee VIII. 4 124 centralis, 9 ........ ee ee ee ee IX. 6 146 |

AZtECA eee eee ee VIII. 5 125 | —— (o genitalia) ............ IX. 6a| 146

tepaneca .. 1... eee ee ee eee VITl. 6 125 FC -) Os Oa IX. 7 147

erythropoda, 9 .............005 VITl. 7 126 | —— (od genitalia) ............ IX. 7a| 147

bicornuta, 9 ........0 eee ee eee VIII. 8 127 hector, Qo... cece eee eee eee IX. 8 147

—— pilosa, So... ee eee ee eee VIII. 9 128 costaricensis, Q .......... ee ee IX. 9 148

sonorensis (¢ genitalia) ........ VIII. | 10 129 constance®®, Q ...... ee eee eee IX. 10 149

Philanthus vertilabris, ¢ ............ VIII. | 11 131 | —— (od genitalia) ............ IX. 10a| 149

xanthostigma, 9 ............6- VITL. | 12 131 || ——— guerrerensis, 2 ................ IX, 11 150

maculifrons, g .........e cece VIII. | 13 132 yucatanensis, Q ........-..... IX. 12 150

—— multimaculatus, ¢ ............] VIlt. | 14 133 Montezuma ........ cece eee TX. 13 151

. ar 89, || —— alpestris, J... cece eee eee IX. 14 152

* 9 9

mexicanus* (d genitalia) ...... VI. 56 { 133 alticola ( $ genitalia, &c.)........ IX. 15 152

2 VI 6 89, peltista ..... cece eee eee IX. 16 153

PF ees ° 133 || —— (o genitalia) ............ IX. 16a| 1538

: f{ 90 fulvohirtus..............0000. IX. 17 153

* p)

punchifrons*, So w+ ++ sees sere ve | 7 { 133 maculitarsis, Q.........0. 0000. Ix. |18 | 154

eer 90, Jason, Gow eee ee eee eee eee eee IX. 19 155 |

(d genitalia) ............ Vi. va | 133 || Oxybelus bugabensis ................ IX. 20 156

ae * 87 longispina ............ eee eee IX. 21 157

hirticeps®, So sseeee sess eee ees vi | 2 { 134 aztecUS .. 6... eves e cece eee es Ix. | 22 | 187

(g gonitalia) .........0.. VI. 2b | iB , argenteopilosus ................ IX, 23 158

maculiceps*, ¢ .......--- ee VI. 3 { Be Pompiipa.

“Lats 88, || Ceropales agilis, 9 6... wee ee eee X. 1 158

—— —— (¢ genitalia) ............ VI | 3a { 134 anteca, 2 ......csec sce c eee ee x. | 2 | 159

“ys 88, fumipennis ( ¢ genitalia) ........ X. 3 160

Bracilis™, J ves esses ee ee seen Vi. 4 {134 chiriquensis ....... 0 .. eee eens X. 4 160

one 88, apicipennis (¢ genitalia, &c.)....; X. 65 161

(d genitalia) ............ VI. 46 { 134 || Pseudagenia cressoni ...............- X. 6 161

curvinervis ..........00e eee X. 7 162

incognita, 9 ..... eee eee eee eee X. 8 163

Mrwusrp x. MONtIVAGA ... eee eee eee ee ee X. 9 164

Mimesa mexicana, 9 .............05. VIII. | 15 184 gentilis 2.6... ce ee ee ee ee ee xX. - | 10 165

pulchra, Qo... eee eee ee eee VIII. | 16 135 || —— isthmica, 9 .......0... eee X. 11 165

—— striolata, 9 wo... cece ee ee eee VOI. | 17 136 championi, Q .... ce ee eee eee X. 12 166

longiventris, 9... ... cece eee VIII. | 18 137 tolteca .. cc. eee eee X. 14 167

monticola, 2 ...... ec eee ee ees VIII. | 19 137 Collina, Go... eee eee eee eens X. 13 167

-claviventris, 9 ........--..005. VITI. | 20 139 perdita ...... 0. cee cee eee X. 16 168

Psen annulipes, ¢ .......0.-00-0eee. VIII. | 21 139 extrema... ......6+ eee eens X. 15 169

——— teape............. eee en eee X. 17 169

melanocephala, 9..... eaten ee’ X. 18 172

PEMPHREDONIDE. tabascoensis, Sw. we ee ee eee eee X. ly 172

Stigmus podagricus, 9 .........-.... VIII. | 22 140 —— (do genitalia) ............ X. 9a; 172

montivagus, 9 ...........ee ee VIII. | 23 141 || Salius neotropicalis, 9 .............. X. 20 | 174.

* The generic name of these species is given as Philanthocephalus on the Plate.

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

x LIST OF PLATES,

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

Salius velox, 9 ....... * vee e eee eeae X. 21 175 || Tiphia elegans ........ 00. ec cee ae XII. 16 240

omiltemius ...........02c eee X. 22 176 | Myzine fulviceps ........ eee ee ceeeel MID 20 248

trifasciatus, So. cee ee eee ees X. 23 177 pulchriceps, S .... 1... cece eeee XII, | 21 249

— (do genitalia) .......... af XX 23a) 177 | —— Dee eee XIL, | 22 249

TUfOSPINA 2.6... eee ee eee eee X. 24 177 sexmaculata ........ sec e eens XII. | 19 251

smithi ...... eee cece ee eee X. 25 179 || —— pulcbrina ............ cece eee XITL. | 18 254

alpestris.. 2.2... eee eee ee eee X. 26 179 | ——— montivaga ........ cc ee eee ee XII. | 15 255

— (od genitalia) ............ X. 26a 179 | —— ornaticeps .......... 0. ce eee ee XIT. 24 256

guatemalensis ...............- X. 27 180 rufiventris ..... 0... e eee ee eee XII. | 23 258 |

centralis 2. ....... eee eee XI. 1 180 .

Nivalis vo... eee eee eee ee ees XI. 2 182 .

MEXICANUS .. 2... eee eee eee XI. 3 183 . Morieirp2.

rogersi (cd genitalia) ......... XI. 4 183 | Mutilla arguta, 9 .... ... ee. eee eee XIII. 2 262

dolichocerus ............+0005- XI. 5 183 rufofemorata, 2 -........e0000- XIII. 1 264

— (od genitalia) ............ XI. 5a| 183 | ——cyllene, d....... ‘beet ewes eens XII. 4. 266

morelosensis (3 genitalia) ...... XI. 6 184 || —— (d genitalia) ............ XIII. 9) 266

VETHPACIS 6... ee eee eee eee ee XI. 7 184 || —— QD eee cle ccc e cence XIII. 6 266

Pompilus eubule...............200-- XI. 8 187 || —— confusa, Q ........-. ce eee ee XIII. 8 268

(Aporus) smithianus........ or © 9 191 | —— dedala, Q.................04. XIII. 9 269

montezuma ........ eee eee ee XI. 10 193 impudica, 9 ...........0. 00 eee XII. | 11 270

ZAPOtECUS ....... eee eee eee XI. 1l 193 || —— subrobusta, 2 ........ 0.05005 XIII. | 10 271

pulchrinellus ...............005 XI. | 12 194 hogel, Qo... cece ee cece ee eee XIII. | 18 274

alticola ...... ce ee ee ce eee XI. 13 194 porcata, Q, var. oo... eee eee XIIT. 7 275

10) A (1: XI. 14 195 gaumeri, Q 1... . eee eee ee ee XIII. | 12 276

interstitialis .................. XI | 15 195 || —— amule (¢ genitalia)............ XIII. 3 277

—— imperialis .. 0... ce eee eee XI. 16 196 || —— exacta (¢ genitalia)............ XIIl. | 20 278

_—— championi............ bese eee XI, 17 196 || —— connexa(<¢ genitalia) .......... XIII. | 21 279

omiltemensis .......... 0.0 cee XI. 18 197 || —— orthona (¢ genitalia) .......... XIII, | 26 288

—— philadelphicus ................ XI. 19 197 || —— thura (¢ genitalia) ............ XIII. | 19 289

leona 2... eee ee cece eee eee XI. | 20 198 forreri ( ¢ genitalia)............ XIII. | 24 290

VCT@PACIS 2.6... ee ee ete eee eee XI. 21 200 chroma (¢ genitalia) .......... XIII. | 22 291

—— chiriquensis .................. XI. 22 201 championi, Q 2... .. eee eee XI. | 13 296

OXACHUS oo... eee ee ee ee ee eee XI. 23 202 teape, Qe iccececececeveracs XIII. | 17 296

boucardi .......... 0.00002 ee XI. 24 204 tolteca, Qo... cece cece eee ee XIII. | 14 297

apiculatus ........ 0. cece eee eee XI. | 25 205 bugabensis, 9 ...........0.08 XIII. | 23 299

subargenteus.............0.00- XI. | 26 205 triangularis, 9 ....... eee ee eee XIII. | 27 300

flavopictus........ ee. ce eee XI. 27 210 pantaleone, 9 1... . eee eae XIII. | 25 300

GOITIdUS .. 2. ee ee eee XI. | 28 211 chiriquensis, 9 ............00ee XIII. | 28 301

Notocyphus violaceipennis............ XII. 1 213 odontophora, do... ee eee eee XII. | 30 304

Pepsis guatemalensis ................ XII. 2 216 || —— (od genitalia) .......... ..| XI | 31 304

antennalis..........0c cece eee XII. 3 217 Culta, Sw. eee eee ee ee eee XIII. | 15 305

montezuma ......... eee eee eae XII. 6 217 ||; —— (o genitalia) ............ XIII. | 16 305

occidentalis .......:....-. eee XII. 5 218 pomona, Sw... eee eee ee eee XIII. | 29 306

TUDTA .. kee ce ee ee tees XII. 7 218 herberti, ¢ ........ ee ee eee ...| AIT | 82 308

charon ........ Decne eee e eens XIT. 4 220 || —— (do genitalia) ........... .| XIE. | 33 308

VONUSA 6. ee eee eee ee eee XII. 9 221 || Spherophthalma respublicana, 9? ...... XIV. 1 314

ravula, Q ...... cece ecw ee cee XIV. 5 314

jocularis, 9 ow... see eee eee XIV. | 3 315

Scoumip.x. inimica, 9... sss. se esse XIv. | 2 | 318

Scolia fervida ........ cece cece eee XII. | 17 223 beata, Q ve ke cece cece eee ees XIV. 4 319

SAUSSUTCL 1.2... eee ee eee .--{ XID 9 226 Caltha, QO Lo... ee ee ee eee eee XIV. 6 319

Elis vitripennis ...... ..... eee eee -| XID. | 10 227 euryclea, Ow. ee eee cee eee ee XIV. 7 320

regina, Sw... eee eee eee eee XII, | 11 228 animosa, Q ...... eee cence «| XIV. 8 320

— 9 Qe cece cece cece eee eee XII, | 12 228 damia, Qo... ee eee cece eee XIV. 9 321

albofimbriata.........,....008. XII. | 13 229 extinctor, Q ...... cece ee eee XIV. | 10 322

MEXICANA ...e cee ee ee eee eee XT, 14 232 amphissa, 9 ...... cece ce eccees XIV. | 11 325

Epomidiopteron aureohirtum.......... XII. 8 235 lycimnia, 9 ........ 6. cee eee XIV. | 13 327

LIST OF PLATES.

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

Sphzrophthalma phedyma, 9 ........ XIV. | 15 327 || Spherophthalma subgracilis, 9 ..... « XIV. | 21 339 |.

xanthocerata, 9 ......2+.. sees XIV. | 14 330 cephalica, 9 2.0... . eee eee eee XIV. | 22 340

Ipsea, QL. eee eee eee XIV. | 16 331 || —— ludovica, 9 .............2.05. XIV. | 24 342

areta, 2 .......... vee ee eee .| XIV. | 12 332 minutoria, Q 6... eee ee ee eee XIV, | 26 343 |

cleonica, Q we. eke eee ee ee eee XIV. | 17 333 excentrica, C6... ee ee eee eee ee XIV. | 25 345.

sonorensis, Q 6... ee ee ee ee eee XIV. | 18 335 | —— (od genitalia) ............ XIV.. | 25a; 345

munda, 9.6... cece eee eee eens XIV. | 19 337 jaliscoensis, Goo... cece eee eee XIV. | 23 346

chontalensis, 9 .........2 00 wees XIV. | 20 337 volatilis, ow. k eee eee eee eee XTV. | 27 347

401

ERRATA ET CORRIGENDA.

Line

32 for zanthoptera read xanthoptera.

22 for convential read conventional.

18 for panamensis read chiriquensis: the name panamensis has been used

for two different species of Salius ; it is necessary therefore to change

one of them.

24 for with read without.

BIOLOGIA CENTRALI-AMERICANA.

ZOOLOGIA.

Class INSECTA.

Order HYMENOPTERA.

ACULEATA.

Under the designation of ‘ Aculeata’ are included the Hymenoptera commonly

called Wasps, Ants, and. Bees, the other section of the Order with petiolated abdomen

being called ‘ Terebrantia.’ As a matter of fact I do not see how any clear line of

demarcation can be drawn between the ‘ Aculeata’ and the ‘ Terebrantia,’ nor am I

sure that they can be separated by any one structural character. It is doubtful if

Hartig’s divisions of ‘ Ditrocha’ and ‘ Monotrocha’ can be looked upon as altogether

satisfactory ; for, like most classifications based upon a single character, it would

separate groups which agree in many points to place them near those with which they

agree in one only. |

The Aculeata include four more or less clearly defined sections—the ‘ Fossores,’

‘ Diplopteryga,’ ‘ Heterogyna,’ and the ‘ Anthophila.’

Section FOSSORES.

This section contains the sand- and wood-wasps and the Mutillide. From the

‘ Heterogyna’ (Ants) they are recognizable by the abdominal petiole having neither

scales nor nodes, in which respect they agree with the ‘ Diplopteryga’; the ‘ Fossores,’

in fact, only differ from the latter in the wings not being folded longitudinally in repose.

Fam. SPHEGIDA.

This family is tolerably well defined by the neck-like prothorax, the hinder angles

of which do not reach to the tegule, and by the smooth, cylindrical petiole.

BIOL. CENTR.-AMER., Hymenopt., Vol. IL., October 1888. BB

2 HYMENOPTERA.

In this and the following families I have had figured by Mr. William Chaffers the ©

male genital organs wherever these exhibit any specific distinctions; for it must be

recollected that they do not vary to the same extent in all families. When they do

differ their form affords most valuable aid in discriminating the species; and in my

opinion they should be figured whenever possible. In the various families the male

organs vary exceedingly, to such an extent that in some of them it is not easy at first

to trace the homologous parts.

For taxonomical purposes we may distinguish three distinct parts :—

1. The basal piece, or cardo. This does not show much variety in form, though not

always of the same length or breadth.

2. The forceps, or stipes. This is the outer piece, and shows very great variation in

form and clothing. It divides itself into three, or in some cases four, parts :—

a. The branch, which is the outermost portion, and, as often as not, bears hairs or

bristles. It is sometimes one-, sometimes two-jointed, the second joint being

formed by the separation of the top from the basal part; and usually takes the

form of a palpiform articulation, to which the name of lacinia has been given.

6. The volsella, which is in most families a very characteristic piece. It is some-

- times broad, flat and lobe-like, sometimes cylindrical. .

c. The tentaculum, or pincers of Dufour. This is not invariably present. When it

is, it assumes different forms—round, broad, or palpiform; and the apex some-

times ends in a spoon-shaped process, surrounded with hairs, and sometimes

terminates in a beak or hook. ’

3. The sagitte, or hamuli; the “ baquettes cornées” of Dufour. These are the

central pair of organs, and have the penis placed between them; but the latter can

seldom be observed. The sagitta, like the other parts, has a particular form in the

various families, and terminates in teeth or hook-like processes. At its base is a kind

of envelope—the spatha or “ fourneau de la verge” of Dufour.

In the Sphegide the male armature is rather characteristic. The branch of the

forceps is stout, flattish, broad or narrow at the base, and becomes narrowed at the top,

where it, as a rule, curls over the sagitte. It is but seldom two-jointed, and frequently

is pilose at the top, and sometimes at the middle. The volsella is characteristic; it is

flat and broad, and towards the apical two thirds on the inner side it becomes narrowed

from the inner to the outer side into a more or less fine point. The tentaculum is

narrow, but not cylindrical ; it usually reaches near to the top of the volsella, and ends

in a variably-shaped organ, which, however, generally takes the form of a beak, hook,

or spoon-shaped process. The sagittee project above the volsella; they are narrow, and

terminate in a lobe-like process, which frequently bears a hook.

AMMOPHILA. 3

AMMOPHILA.

Ammophila, Kirby, Trans. Linn. Soc. iv. p. 195 (1798).

Psammophila, Dahlbom, Hym. Eur. i. p. 16 (1843).

All the species known from our region are typical Ammophila or Psammophila,

which latter differs merely from Ammophila in the form of the petiole. The genus is a

very extensive one, and contains a large number of representatives from all parts of the

world. The species frequent hot sandy districts, and provision their nests with

caterpillars.

The male armature is tolerably uniform, that of A. miliaris and A. aureo-notata being

the most aberrant. The tentaculum is beak-shaped, or an elongated triangle. The

outer lobe of the volsella is long and narrow. ‘The sagittee are not much dilated at the

apex, and bear a long, thin, whip-shaped process, which is usually folded across.

I. Petiole composed of two joints. (Species 1-28.)

A. Abdomen bluish-black, without red. (Species 1-8.)

a. Mesothorax punctured. (Species 1-5.)

{ 1. Ammophila miliaris. (Tab. I. figg.1; la, ¢.)

Nigra, opaca, breviter fusco-villosa; thorace capiteque argenteo-pilosis ; alis fuscis vel violaceis; 2 clypeo

fere truncato, ¢ acuminato.

Long. 12-15 millim.

Hab. Guatemata, San Gerénimo (Champion); Panama, Bugaba 800 to 1500 feet,

Volcan de Chiriqui, David (Champion).

Head opaque, with some scattered shallow punctures, which are more numerous on

the face and more especially on the clypeus; the front ocellus separated from the

posterior ocelli by less than half the space between these; vertex almost bare of pile,

but (like the rest of the head) bearing some rather long blackish-fuscous hair; face

closely covered with a short silvery pile, which is longest on the clypeus; the latter is

produced, waved at the sides, and slightly depressed in the middle at the apex.

Pronotum with an oblique, broad, shallow depression on either side in front, the top

thereby being narrowed, separated from, and somewhat raised above, the sides. Meso-

sternum tuberculate at the base and apex laterally, the posterior tubercles smaller and

more clearly separated than the anterior ones; the centre strongly transversely striolated

and distinctly furrowed ; between the middle legs depressed in the centre and tuberculate

laterally. On the mesopleura a }-shaped broad furrow runs down from the tubercles.

Thorax velvety (especially in front), opaque, the scutellum more shining; postscutellum

transversely ridged, opaque, alutaceous; metanotum transversely, the metapleure ob-

liquely, coarsely striated; metanotum with an indistinct shallow longitudinal depression

BB 2

4 _ HYMENOPTERA.

in the centre. Tegule shining. The tubercles, a larger spot on the mesopleure, and

another at the end of the metapleure, silvery-white. The apical segments of the

abdomen deep velvety-black. Hind coxe covered with a silvery pubescence. ‘The

third antennal joint one quarter longer than the fourth.

The male has the clypeus and face densely covered with a golden pubescence ; the

clypeus produced at the apex into a short blunt tooth and projecting outwardly; and

the mesosternum not or hardly tuberculate.

Norse.—A male example before me, of which the armature is figured on Tab. I. fig. 6,

clearly represents a distinct species from A. miliaris; but apart from this difference in

the genital organs I cannot separate it by any satisfactory character from A. miliaris.

IT have some other Central-American specimens (females) which are probably distinct

from any I have described; but I am at present far from being clear as to the specific

characters by which they can be differentiated from A. miliaris.

J 2. Ammophila gaumeri. (Tab. II. fig. 2, 3.)

_ Hab. Mexico, Temax in North Yucatan (Gaumer); GuaATEMALA, San Gerdnimo

(Champion).

Similar in form and colour to A. miliaris; but differing in the clypeus being almost

flat (not produced broadly in the middle and depressed at the apex), with its apex not

so sharply truncated, the curve from the sides being longer and more gradual, and also

in having a broad well-defined border to it; the mesonotum wants the velvety

appearance ; the metanotum is not transversely striated, but opaque and granular, and

the edges only show traces of striation; the petiole is shorter; the second cubital

cellule is broader at the top, the nervures not approaching each other, so that the top

is half the length of the bottom (in A. miliaris it is not one sixth); the recurrent

nervure is received before the middle (not at the middle as in A. miliaris); the

front ocellus is more widely separated from the posterior ocelli; the pronotum is

not raised in the centre and is broader above; the sternum is alutaceous and not

tuberculate ; the third antennal joint is more than twice the length of the fourth; and

the pleuree, coxee, and abdomen are of a much more decided bluish tint.

The pile all over the body is sparse; the face and clypeus want the silvery pubescence

entirely, and on the thorax it is only visible on the tubercles and on two spots on the

apex of the metanotum. In the centre of the mesonotum is a depression which is

prolonged as a distinct furrow towards the base, and there is a depression on either

side close to the tegule. The puncturing on the mesonotum is rather close, but not

very strong. The scutellum is opaque, closely punctured, the punctures at the apex

running into longitudinal striations. The postscutellum is rugosely punctured. The

hind tibize and the base of the tarsi on the inner side are covered with a fulvous pubes-

cence ; the other parts of the legs are almost devoid of pile.

AMMOPHILA. 5

The male I refer to the same species has the clypeus and cheeks densely covered

with a thick silvery pile, and the former is slightly incised in the middle; the pleure

have a silvery pubescence ; the scutellum is more distinctly striated towards the apex;

the hair on the head and thorax is longer ; the bluish tint of the body is not so con-

spicuous; and the wings are lighter-coloured towards the middle and base.

, 3. Ammophila micans.

Ceerulea, fusco-hirta, thorace opaco; clypeo truncato ; alis fusco-violaceis. 9.

Long. 20-21 millim.

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

The face bears some scattered punctures; the vertex and thorax are alutaceous,

opaque, of a darker colour than the rest of the body, varying almost into black. The

cheeks bear a faint silvery pile; and, as well as the rest of the head, are covered rather

closely with longish black hairs. Clypeus not projecting, furrowed ; the apex broadly

transverse in the middle. The furrow on the vertex is deep and moderately broad.

The front ocellus is separated from the posterior ocelli by fully half the space between

these. The third antennal joint is more than twice the length of the fourth. The

thorax has but a very faint punctuation ; the scutellum is more shining, and has some

punctures ; there is not a distinct depression in the centre of the mesonotum, but one

on either side; a narrow furrow runs down the mesopleura from the tegule, and there

is a short transverse one beyond it opposite the tubercles. Mesosternal furrow

indistinct. Metathorax granular, opaque, indistinctly striated. The thoracic pubes-

cence is rather dense and fuscous-black ; the tubercles and a spot on either side of the

metanotum are silvery. Abdomen almost shining, and glabrous; the petiole black,

but slightly curved. Legs almost without any pile; the tibie with a few bristles. The

second cubital cellule is at the top about one fourth longer than the corresponding part

of the third; the first recurrent nervure is received before the middle.

’ 4. Ammophila iridipennis. |

Nigra, subnitida, thorace fulvo-villoso ; sparse punctata, metanoto pleurisque striatis; clypeo 2 curvato, g

transverso; alis fusco-violaceis.

Long. 23 millim.

Hab. Guatemata, Zapote (Champion).

Face and clypeus bearing a short, sparse, pale pile; and, as well as the front and

vertex, sparsely covered with longish black hair, and marked with scattered punctures.

Front depressed in the centre, where there is an ill-defined furrow. Clypeus broadly

convex, the extreme apex depressed, margined, and waved in the middle. Third

antennal joint one half longer than the fourth. Pronotum raised broadly in the centre

above ; the sides projecting into tubercles. Mesosternum indistincly tuberculate at the

base and apex. A }-shaped furrow runs down from the tubercles. Thorax rather

6 HYMENOPTERA.

closely covered with a fulvous pile; the pro- and mesonotum sparsely punctured and

shining; pleure opaque, obliquely striated, except in front below the tegule; meta-

notum opaque, closely pilose, the base rugose, the rest closely transversely striated,

_ the centre depressed towards the apex; scutellum depressed in the middle, the apex

longitudinally striated; mesonotum with a furrow down the centre, the furrow not

distinct at the base. Basal joint of the petiole pruinose, curved; the rest of the

abdomen pruinose, the apical segment bearing some longish black hair. Legs densely

pruinose. Second cubital cellule at the bottom three times the length of the third,

and at the top not much shorter than the space bounded by the first transverse cubital

and first recurrent nervures; second recurrent nervure received quite close to the

second transverse cubital; third cubital cellule at the top as wide as at the bottom.

The male has the head below the antenne densely covered with golden pile; and the

apex of the clypeus broadly transverse.

The sericeous spots on the thorax are formed as in A. miliaris, from which the

male is readily known by the clypeus being transverse. In the female the clypeus does

not project so much, and the apex is broadly incised ; the pile is sparser, especially on

the thorax, which has not the velvety appearance ; and the third cubital cellule is wider

at the bottom, and not much narrower there than at the top. A. iridipennis is also

smaller than A. miliaris. The allied A. gaumeri is longer, is distinctly bluish in tint,

has the clypeus flatter and transverse at the apex, &c.

v5. Ammophila centralis. (Tab. I. figg. 12; 12a, ¢.)

Nigra, opaca, longe nigro-hirta, abdominis segmento 2° subtus testaceo, metathorace coriaceo, clypeo inciso ;

alis fuscis. ¢.

Long. 20 millim.

Hab. Guatemata, El Reposo 800 feet, San Gerénimo (Champion).

The eyes are large, projecting, and converge on the lower side. Face covered with

silvery pile; clypeus broadly incised in the middle; hair longish and rather dense;

vertex slightly depressed in the centre, but without a furrow ; punctuation moderately

close, but shallow. Third antennal joint nearly one half longer than the fourth. Pro-

and mesonotum shining, closely punctured ; an indistinct furrow in the centre of the

former, a distinct broad one in the middle of the latter, and one on either side;

scutellum strongly punctured; pleure finely rugose, opaque; a semioblique furrow

runs down the mesopleure from the tegule; metanotum rugosely striated, flat in the

centre. The pubescence is scarcely so long as that on the head, but dense; the pleure

have a short silvery pubescence, the apex of the metathorax a longer and denser one.

Petiole long. Legs covered with a hoary pile; the coxe have longish hair. Wings

lighter in tint at the apex; second cubital cellule at the top but very slightly longer

than the third; the first recurrent nervure received before the middle where the cellule

is angled.

AMMOPHILA. 7

b. Mesothorax transversely striated. (Species 6-8.)

J 6. Ammophila aureo-notata. (Tab. I. figg. 11; lla, ¢.)

Nigra, abdomine subceruleo, mesonoto striato; alis fumatis; 9 clypeo transverso, ¢ acuminato.

Long. 12-15 millim.

Hab. Mexico, Valladolid in Yucatan (Gauwmer).

Face in the female densely covered at the sides and on the clypeus with silvery-white

hair; the vertex shining, bearing a very short pale pile and a few longish hairs, fuscous

or blackish; the sides of the head bearing longish white hairs. Clypeus produced

broadly in the middle, the apex depressed and transverse ; the sides rounded. Front

depressed in the centre, where there is a narrow, but distinct furrow running down

from the ocelli, these latter being surrounded and united by furrows. ‘The vertex and

front bear some distinct punctures, those on the front being the longer. The ocelli

are almost in a triangle. The third antennal joint is twice the length of the fourth.

Pronotum narrow above, with a slight longitudinal furrow on the top and an oblique

furrow on either side. Sternum transversely striolated. A wide oblique furrow in the

centre of the propleure ; and a }-shaped furrow runs down the mesopleure from the

tegule. Prothorax above and laterally shining, impunctate, sparsely pilose; the pro-

sternum opaque, alutaceous. Mesonotum strongly transversely striated, depressed in

the centre (where it is scarcely striated) and along the sides. Mesopleure opaque,

finely but rugosely punctured. Scutellum stoutly, longitudinally, rugosely striolated.

Metanotum depressed in the middle, transversely striated; metapleure obliquely

striated, opaque. The thorax is sparsely covered with a greyish pile and has some

rather long pale hairs; there is a golden spot on the middle of the mesonotum at the

base; the tubercles, a large mark on the mesopleure, and an oblong spot on either

side of the metanotum are silvery white. The petiole is deep black, shining; the rest

of the abdomen is covered with a velvety pile, and inclining to blue in tint. Legs

covered with a short, greyish, silky pile, which is longest on the coxe. Wings

uniformly fusco-hyaline, varying in intensity in different individuals, but never darker

at the apex.

The male has the face thickly covered with a golden pile; and the clypeus acuminate,

terminating in a stout tooth.

. 7. Ammophila barbata.

Ammophila barbata, Smith, Ann. & Mag. Nat. Hist. 4th ser. xii. p. 260 (1873)’.

Hab. Mexico}.

In having the mesothorax transversely, and the scutellum longitudinally, striated, as

well as in coloration, this species agrees with A. aureo-notata; but it must, I think, be

regarded as distinct. A. darbata is said to have the prothorax coarsely transversely

8 HYMENOPTERA.

striated ; and the metanotum to have “an elongate, angular space at the base rugose,

on each side of which is an oblique striation” (in A. aureo-notata the metanotum is

entirely striated). In A. barbata the wings are “hyaline, with their apical margins

fuscous beyond the apex of the marginal cellule, the fuscous border sharply defined.”

! 8. Ammophila ceres. (Tab. I. fig. 10, ¢.)

Nigra, dense griseo-pilosa, punctata, thorace supra transverse striolato; alis fusco-hyalinis. ¢.

Long. 31 millim,

Hab. Guatemaa, San Geronimo (Champion).

The hair on the head is longer than that on the thorax and is blacker; the face has a

griseous pubescence; the vertex and front are punctured rather strongly ; the latter is

not much depressed in the middle, where there is a shallow furrow. Clypeus broadly

transverse at the apex, slightly retreating in the centre, giving the appearance of an

incision there; it does not project. Front ocellus separated from the posterior ocelli

by fully half the space between these. Third antennal joint one half longer than the

fourth. Pronotum broad, rather long; an oblique broad furrow on the pleure. <A

broad shining furrow runs down from the tegule. Sternum indistinctly furrowed.

Thorax densely covered with long griseous hairs; densely and strongly punctured, above

strongly transversely striolated; the scutellum with some stout longitudinal keels ;

postscutellum more raised, rugose, a stout keel on its apical margin. There is an

indistinct furrow in the centre of the mesonotum; the metanotum is depressed

laterally. ‘The petiole is nearly as long as the thorax; the third segment is rufous

laterally and beneath in the middle. The legs are hoary; the coxe bear a few hairs ;

the tarsi are very shortly spinose. The second cubital cellule is twice the length of

the top at the bottom, the top not being much longer than the space bounded by the

first transverse cubital nervure and the first recurrent nervure; the latter is recurved

a little before the middle of the cellule; the third cubital cellule is of nearly equal

width at the top and bottom; the third recurrent nervure is bent outwardly a little

below the middle.

B. Abdomen more or less red in the middle. (Species 9-28.)

a. Legs entirely black. (Species 9-25.)

1. Wings yellowish ; head and thorax bluish. (Species 9.)

\ 9, Ammophila zanthoptera. (Tab. I. fig. 4.)

Nigro-cerulea, dense fusco-pilosa, punctata; metanoto transverse striolato ; abdominis medio rufo; alis flavo-

hyalinis, stigmate nervisque flavis. 9.

Long. 27 millim.

Hab. Guatema.a, Calderas 6000 feet (Champion).

AMMOPHILA. 9

Antenne almost bare, or slightly hoary. Head covered with long blackish hair,

punctured, but not strongly; frontal furrow wide, shallow. Clypeus transverse at the

apex; the angles obliquely rounded, scarcely projecting. Third antennal joint twice

the length of the fourth. Thorax opaque, covered with shorter and paler hair than

the head, closely punctured; the furrow on the mesonotum deep, wide; a narrow

furrow runs down from the tegule, and a short transverse one runs from it opposite

the tubercles, uniting to an oblique one ; mesosternal furrow distinct; metanotum

closely, transversely striated, scarcely depressed in the centre. Abdomen covered with

a close hoary pile; the apical three fourths of the second and the third and fourth

segments entirely red. The petiole has scarcely a bluish tinge. Tibie and tarsi

covered with a hoary pile, the latter densely spinose, the former with a few stout

spines. The second cubital cellule is longer on the upper and lower side than the third,

the top half the length of the bottom, the latter slightly angled where the recurrent

nervures are received—before the middle and a little before the apex; the third

cellule at the top is about one third of the length of the bottom; the third transverse

cubital nervure is turned backwards before the middle is reached.

2. Wings fuscous ; thorax densely pilose. (Species 10-25.)

+ Mesothorax striated. (Species 10, 11.)

| 10. Ammophila championi. (Tab. I. fig. 3.)

Nigra, thorace capiteque dense griseo-pitosis ; thorace fortiter punctato, supra transverso striolato ; seutello

longitudinaliter striolato ; abdominis segmentis 2° et 3° pro parte rufis; alis fusco-violaceis. 9.

Long. 33 millim.

Hab. Guarnmana, San Gerénimo and Cubulco in Vera Paz (Champion).

Head covered with long blackish hair; the front and vertex finely, the clypeus, more

strongly, punctured ; front depressed above the antenna, and with an indistinct furrow

running down its middle; clypeus transverse in the centre. Third antennal joint more

than twice the length of the fourth. Thorax densely covered with longish (but still

shorter than that on the head) grey hair; the pleure strongly punctured, the tubercles

impunctate; pro-, meso-, and metanotum strongly transversely striolated, except the

mesonotum at the base; scutellum strongly longitudinally striolated; postscutellum

rugose; there is a narrow furrow in the centre of the mesonotum, and a narrow, not very

distinct, furrow runs down from either side of the tegule. Coxe and femora sparsely

covered with long black hair; tarsi densely, the tibiee sparsely, spinose. The top of

the second cubital cellule is a little longer than the space bounded by the first trans-

verse cubital and the first recurrent nervures; the latter is received before the middie ;

the third cubital cellule is somewhat longer than the space enclosed by the twa

recurrent nervures and about one fourth shorter than the bottom of the cellule.

BIOL. CENTR.-AMER., Hymenopt., Vol. I1., October 1888. cc

10 HYMENOPTERA.

11. Ammophila striolata.

Nigra, breviter sericeo-villosa ; pro-, meso- et metanoto transverse striolatis ; scutello longitudinaliter striolato ;

clypeo dense fulvo-villoso, apice transverso; abdomine rufo, apice nigro ; alis fusco-hyalinis. @.

Long. 24 millim.

Hab. Mexico, Ventanas in Durango 2000 feet (Forrer).

The pubescence on the head is very close and dense all over, but sparsest in the

centre of the vertex. The vertex is broadly and deeply depressed in the middle above

the antenne. Clypeus obliquely depressed at the apical half, the apex itself almost

depressed. Third antennal joint twice the length of the fourth. Collar elongate,

broadly obliquely furrowed laterally. The pubescence on the thorax is dense, forming

two oblique silvery stripes on the pleure, the posterior stripe being united to the silvery

patch on the apex of the middle segment. The top of the pronotum bears thick

patches of pubescence at the base and apex. The striolation on the pro- and meso-

notum is strong and close; on the metanotum it is finer, closer, and oblique; on the

scutellum it is still stronger and coarser. The mesopleure are strongly punctured ;

a curved furrow runs down from either side of the tegule. There is a shallow furrow

in the centre of the mesonotum ; the metanotum is depressed in the middle. Abdomen

elongated, pruinose. Legs densely pruinose. At the top the second cubital cellule is

as wide as the space bounded by the first transverse cubital and first recurrent nervures,

and nearly one fourth longer than the top of the third cellule; the latter is narrower

at the top than at the bottom, and considerably dilated on the lower half.

+f Mesothorax punctured. (Species 12-25.)

{ * Petiole black. (Species 12-23.)

12. Ammophila alticola. (4. chiriquensis, Tab. I. fig. 9a, 3.)

Nigra, apice petioli abdominisque segmento 1° lateribus rufis ; dense punctata et argenteo-villosa, scutello rugoso-

striato, metanoto transverse rugoso ; clypeo dense aureo-villoso, apice fere transverso ; alis fusco-hyalinis.

Long. 24 millim.

Had. Paxama, Volcan de Chiriqui 2000 to 3000 feet (Champion),

A long narrow insect. The pubescence on the thorax is long and dense, and forms

a conspicuous oblique stripe down the apex of the mesopleura, the usual hirsute spots

being also distinctly visible. ‘The hair on the top of the head is long and moderately

dense, and the front and vertex are closely, but not deeply, punctured. The clypeus

is produced, but broadly transverse at the apex; the sides are rounded. Ocelli nearly

in a triangle. Third antennal joint hardly one quarter longer than the fourth. Collar

moderately long; the sides with two oblique depressions, the upper depression the

shortest and semioblique. Thorax closely and distinctly punctured, almost transversely

punctured in the middle of the mesonotum ; the latter has a narrow furrow down its

AMMOPHILA. Oe 11

centre ; scutellum rugosely longitudinally striated, the interstices being finely rugose ;

metanotum flat, the shield-shaped central part distinctly separated and transversely

rugose ; metapleura rugose. ‘Two furrows run down from the tegule, the first bending

sharply to the second near its apex. Abdomen elongate, narrow, the:apex bluish-black.

Wings shorter than the abdomen; the second cubital cellule at the top is a little

shorter than the space bounded by the first transverse cubital and first recurrent

nervures, and longer than the third at the top; the third cubital cellule is half the

length of the bottom at the top. Legs densely silky-white-pruinose.

J 43, Ammophila trichiosoma. (Tab. I. fig. 13, ¢.)

Nigra, capite et thorace dense cinereo-pilosis, punctatis, scutello rugoso, metathorace transverse punctato ;

abdominis segmento 2° petiolique apice subtus rufis; alis fusco-violaceis, apice fumatis. ¢.

Long. 14 millim.

Hab. Guatemata, Capetillo (Champion).

The hair on the head is long and black, and there is a short silvery pile on the face.

The front is not depressed and there is no furrow. Clypeus very slightly and broadly

incised in the middle; the sides oblique. Front ocellus separated from the posterior

ocelli by less than half the space between these. Third antennal joint more than twice

the length of the fourth. The punctuation on the head is indistinct, that on the thorax

rather strong and close. The hair on the thorax is not so long as on the head, but

is much closer and thicker and greyish. The central furrow on the mesonotum is wide

and distinct; there is no furrow on the pronotum. The propleuree have an indistinct

semioblique furrow. Scutellum strongly, almost rugosely, punctured. A curved

furrow runs down from the tegule. Legs covered with a silvery down; the coxe with

long white hair; the spines on the tibiee moderately thick. The second cubital cellule

above is scarcely longer than the third; below it is about one fourth longer.

J 14. Ammophila picipes. (Tab. II. fig. 4, ¢.)

Nigra, flagello antennarum tegulisque sordide rufis ; pedibus piceis, basi nigris ; abdomine rufo, basi late nigro ;

alis hyalinis, apice fumatis. 3.

Long. 15 millim.

Hab. Mexico, Temax in North Yucatan (Gaumer).

Head and thorax covered with long cinereous or fuscous hair; apex of the clypeus

sinuated, hardly depressed; mandibles piceous towards the apex. Front moderately -

depressed in the centre. Third antennal joint one quarter longer than the fourth.

Prothorax shining, impunctate, elongate, the sides with a curved horizontal furrow;

mesothorax rugosely punctured, the mesonotum transversely so. Scutellum longi-

tudinally striolated. Postscutellum and metathorax rugose. Petiole longer than the |

head and thorax united; red, black above; the second segment for the greater part

red. ‘The second and third cubital cellules variable ; above subequal.

ce 2

12 HYMENOPTERA.

J 15. Ammophila consors. (Tab. II. fig. 3, .)

Nigra, capite et abdominis apice nigro-ceruleis, apice petioli abdominis segmentoque 2° rufis; clypeo fere

truncato; scutello punctato; alis cum nervis fusco-hyalinis, vel flavo-fuscis. ¢ 9.

Long. 18-24 millim.

Hab. Mexico, Temax in North Yucatan (Gaumer).

Head broad, almost shining ; the front and vertex covered with a sparse, short, black,

depressed pubescence; the clypeus with a longer silvery pubescence. Front acutely

depressed in the middle; the central furrow distinct. Clypeus depressed inwardly at

the apex, which is broadly truncated, with the sides rounded ; the apex margined ; the

central region bearing some large punctures. Mandibles entirely black, shining; the

basal part with elongated punctures. Third antennal joint fully twice the length of -

the fourth. Prothorax elongate; a broad, shallow, oblique furrow on the sides.

Thorax almost shining; covered with a depressed short pubescence; the tubercles, a_

broad oblique stripe on the mesopleure, and a spot over the hind coxe, silvery. Meso-

notum with a broad moderately deep furrow in the centre, and there is a broader and

shallower depression along the sides of the tegule; two narrow furrows run down

from the tegule, and a short transverse one branches off from the first. Scutellum

shining, slightly depressed in the middle; almost impunctate, posteriorly irregularly

and indistinctly striolated in some specimens; postscutellum sometimes irregularly

punctured, Metanotum opaque, transversely striated. Abdomen shining; the apical

ventral segments with some longish hairs, the last closely punctured. In most speci-

mens the apical joint of the petiole is more or less black above, and the second

segment is sometimes black at the apex. The second and third cubital cellules

somewhat variable in size: generally above they are of nearly equal length; the third

above is about three fourths the length of the bottom. Tuibie and tarsi rather strongly

spinose ; the metatarsal brush rufous.

The specimens I take to be the male have the head and thorax more densely pilose ;

the apex of the clypeus depressed and a little incised in the middle; the thorax punc-

tured ; the apex of the petiole and the second segment only black beneath; the pleure

with a continuous silvery pile; the furrow on the mesonotum shallower; and the head

and apex of the abdomen want the bluish tinge.

The colour of the wings varies in both sexes: in some examples the apex is much

darker than the middle and base, but generally the colour is of uniform intensity.

J 16. Ammophila nigro-cerulea. (Tab. I. fig. 8.)

Nigro-cerulea, sparse fusco-pilosa et argenteo-pubescens; leviter punctata, scutello et metapleuris crebre

punctatis ; metanoto transverse striolato; abdominis segmentis 2° et 3° rufis; alis fusco-hyalinis.

Long. 12-14 millim.

Hab. Guatemaa, San Gerdénimo (Champion).

The pubescence and hair on the head are rather sparse, as is also the punctuation.

AMMOPHILA. 13

The front is deeply depressed and has a distinct furrow. Clypeus transverse ; its furrow

not very deep or broad. Ocelli forming almost a triangle. Third antennal joint

twice the length of the fourth. Prothorax moderately elongate, and with two oblique

lateral furrows. On the thorax the hair is shorter, paler, and thicker ; the pubescence

is very dense and silvery on the pleure and on the apex of the metathorax; the

punctuation is shallow, but close—on the scutellum it is closer and coarser, and on

the postscutellum it is still stronger and almost rugose; the furrow on the mesonotum

is broad and moderately deep; two furrows run down from the tegule, the first

emitting a short transverse one; the metanotum has the transverse striation strong and

rugged, and is depressed in the centre.

v 17 Ammophila montezuma, (Tab. I. fig. 15.)

Nigra, argenteo-pubescens, capite et thorace dense cinereo-pilosis; crebre punctata; clypeo inciso; scutello

. punctato ; metanoto transverse striolato ; apice petioli abdominisque segmentis 2° et 3° lateribus ventreque

rufis; alis fere hyalinis, apice fumatis. ¢.

Long. 25 millim.

Hab. Mexico, Northern Sonora (Morrison).

The face has a long, dense, silvery pubescence; the front and vertex are almost bare ;

the hair is moderately thick, longish, and cinereous. Front moderately depressed; the

furrow shallow. Clypeus incised. Posterior ocelli separated from each other by

a space equal to that between them and the eyes. Third antennal joint hardly one

quarter longer than the fourth. Prothorax with an indistinct oblique lateral furrow.

Thorax closely punctured, the scutellum rather sparsely so; the hair is rather long,

very dense, and cinereous. There is a dense silvery pile on the prothorax, on the

tubercles, obliquely on the pleure, and on the apex of the metanotum. The central

furrow on the mesonotum is very indistinct; and there is none on the pronotum; a

narrow furrow runs down from the tegula; the centre of the metanotum is slightly

hollowed. Legs covered with a short hoary pubescence, the coxe with long silvery hair ;

the tarsi incline to piceous. The first joint of the petiole is only reddish at the extreme

apex; the second joint is entirely reddish, except a black line above ; the first segment

is red beyond a line in the centre above (the black not touching the base and apex);

the second segment is also red, except a broad black band at the apex; the other

segments (except the apical two) are reddish beneath. The second cubital cellule is

more than three times the length of the third, and on the lower side more than twice

the length of the third on the same side; the third cubital cellule is twice as wide at

the bottom as at the top; the first recurrent nervure is received almost in the middle

of the cellule, the second quite close to the apex.

A. strenua, Cresson, is closely allied to this species, but is smaller, has the scutelium

channelled down the centre, the enclosed space on the metathorax without pubes-

cence, &c. .

14 HYMENOPTERA.

J 18. Ammophila dejecta.

Nigra, abdominis medio late ferrugineo; dense fulvo-cinereo-pilosa ; facie aureo-pilosa ; clypeo fere truncato ;

alis fere hyalinis, apice fumatis.

Long. 17-18 millim.

Hab. Mexico, Northern Sonora (Morrison).

Head wider than the mesothorax, indistinctly shagreened, covered with moderately

large punctures ; frontal furrow indistinct ; clypeus bent inwardly at the- apex, giving

it the appearance of being incised. Posterior ocelli separated from each other by a

less distance than they are from the eyes, and from the front ocellus by half this space.

Third antennal joint one quarter longer than the fourth. Prothorax with a shallow

oblique furrow. Thorax closely punctured; postscutellum rugose ; metanotum striated,

running into reticulations, the apex strongly punctured. An indistinct furrow runs

down from the tegule. The hair on the thorax is long and dense; there is an

oblique silvery stripe along the mesopleure; the metapleure bear silvery hair, and

there is a tuft of cinereous pile on either side of the metanotum. The basal joint of

the petiole beneath, the whole of the second joint, and the first and second segments

(except a black line above) are ferruginous; the apical segments are scarcely pilose.

Coxe with rather long silvery-white hair; the rest of the legs with a short hoary pile;

spines fuscous-black ; claws ferruginous at the tips. Second cubital cellule at the top

one fourth longer than the third and shorter than the space bounded by the recurrent

nervures; third cubital cellule at the top one third shorter than at the bottom; second

transverse cubital nervure slightly oblique, straight; first recurrent nervure received

before the middle of the cellule.

J 19. Ammophila cora, (Tab. I. figg. 18; 18, 3.)

Nigra, cinereo-hirta, apice petioli supra abdominisque segmento 1° ferrugineis; clypeo exciso; mesonoto

punctato; scutello longitudinaliter striato; metanoto transverse striato; alis fuscis. ¢.

Long. 18 millim.

Hab. GuatemMata, San Geronimo (Champion).

Head shining; the face and clypeus sparsely punctured; the vertex with very few

punctures; sparsely covered with long whitish hairs and with no pile; apex of the

clypeus depressed, with a distinct margin and broadly, but not deeply, incised. Eyes

converging on the lower side. Front shallowly depressed in the centre. Third

antennal joint fully one quarter longer than the fourth. Prothorax with a wide trans-

verse and a narrower oblique furrow laterally. Thorax shining, covered with long

griseous hairs; the pleure, pro- and mesonotum punctured ; scutellum with some coarse

longitudinal striations ; the metanotum coarsely and closely transversely striated. Legs

covered with a close hoary pile; the bristles and hind calcaria pale; tips of the

claws ferruginous. Top of the second cubital cellule as long as the distance between

the recurrent nervures and a little shorter than the third cellule at the top; the first

AMMOPHILA. 15

recurrent nervure is received in the middle of the cellule, which is but slightly angled

there; the third transverse cubital nervure is bent outwardly on the lower half and the

upper half retreats inwardly, thus making the upper part of the third cubital cellule

about one fourth narrower than the lower.

This species may be known from the male I somewhat doubtfully refer to A. azteca

by the wings being deeply fusco-violaceous ; the third cubital cellule much wider at the

top, and at the bottom not very much shorter than ‘the second cellule; the lower half

of the third transverse cubital nervure straight; and by the mesonotum not being

furrowed in the middle.

Y 20. Ammophila fragilis. (Tab. I. fig. 5, 3.)

Ammophila fragilis, Smith, Cat. Hymen. Ins. iv. p. 219’; Taschenberg, Zeitschr. ges. Nat. Sachs.

Thiir. xxxiv. p. 434 (1869) ”. ,

Hab. Mexico, Northern Sonora (Morrison), Temax in North Yucatan (Gawmer) ;

Costa Rica, Cache (Hogers).—Souta America, Brazil 12,

I believe [ am correct in referring our Costa Rican and Mexican specimens to A.

_ fragilis. In these the silvery pile on the face is short and indistinct (probably rubbed).

The ocelli form almost a triangle; the posterior pair separated from each other by a

less distance than they are from the eyes. The third antennal joint is nearly twice the

length of the fourth. The prothorax laterally has a \ -shaped furrow ; and two narrow

furrows run down from the tegule. The basal joint of the petiole is for the greater

part reddish beneath; the second joint is entirely so, except a broad black line on the

top; the first and second segments are ferruginous, the others being bluish-black.

The second cubital cellule at the top is nearly double the length of the third and

longer than the space enclosed by the recurrent nervures; the first recurrent nervure

is received a little beyond the basal third of the cellule, the second in the apical

third; the third cubital cellule is not much wider at the top. than at the bottom, the

third transverse cubital nervure is bent outwardly; the stigma is testaceous. The legs

slightly pruinose ; the coxe with a few hairs. The hair on the head and thorax is

pale fuscous, sparse, and not very long,

Smith describes ' the “ abdomen as blue-black, and the second joint of the petiole

and the base of the abdomen as ferruginous beneath.” ‘Taschenberg says? “ petioli

apice et parte antica abdominis nigro-cerulei dilatata, subtus plus minusve rufes-

centibus.” The Central-American specimens therefore differ in the greater extension

of the red colour, and appear to form a distinct variety.

The male has the pilosity of the head and thorax more dense and long ; the clypeus

is densely silvery (inclining to golden), and its apex is depressed inwardly and sinuated

in the middle; and the hair on the thorax (thick on the metanotum) is golden. The

wings vary in colour in both sexes: in some examples they are smoky at the apex and

16 HYMENOPTERA.

nearly hyaline for the rest, and in others almost uniformly fuscous. In size the

specimens vary from 18-24 millim.

J 21. Ammophila gracilis. (Tab. I. figg. 7; 74,0.)

Ammophila gracilis, Lepel. de St.-Fargeau, Hist. Nat. Ins., Hymén. ii. p. 381°.

Hab. Mexico}.

Specimens from Mexico, from Presidio and Ventanas (forrer), and from Valladolid

in Yucatan (Gawmer), and from Panama, Volcan de Chiriqui (Champion), are possibly

referable to this species.

They may be described thus:—Black; the second joint of the petiole and the

greater part of the following segment red, lined with black above; the face and cheeks,

the tubercles, an oblique line on the mesopleure, and a spot on either side of the

median segment, clothed with a dense silvery pile; the vertex and thorax covered with

rather long ashy pubescence. Head slightly punctured; clypeus broadly rounded,

almost transverse in the centre. Ocelli hardly forming a triangle, and widely separated

from the eyes. Third antennal joint one quarter longer than the fourth. Prothorax

with a )-shaped furrow. Thorax rather strongly punctured ; scutellum longitudinally

striolated ; mesonotum with a broad furrow or depression in the centre and another

on either side; a )-shaped furrow runs from the base and a straight one from the apex

of the tegule; metanotum closely and finely transversely striated. Third cubital

cellule a little longer than the second at the top ; below it is about one fourth longer

than it is above.

The male has the face more densely and widely silvery-pilose; the oblique spot on

the mesopleure is wider, and the pleuree and sternum are covered with rather long

dense greyish pubescence ; the hair on the head and thorax is longer and denser; and

the clypeus is more projecting and more rounded at the apex.

This insect is shorter than the species I have determined as A. fragilis; the petiole

and the following segnient are entirely red (and not black throughout above, while the

base of the petiole is red beneath); the pronotum has a furrow in the centre; the

clypeus is more depressed inwardly at the apex; the punctuation on the thorax is

closer; the stigma is reddish ; and the third cubital cellule is only half the length of

the second above.

A. azteca differs from it in having the apex of the clypeus transverse; the clypeus

and cheeks without silvery pubescence; the thorax more shining and less pubescent ;

the pronotum furrowed in the centre ; the furrow on the mesonotum wider and deeper ;

and the wings distinctly fuscous-tinted throughout.

22. Ammophila atriceps.

Ammophila atriceps, Smith, Cat, Hymen. Ins. iv. p. 221°.

Hab. Mexico },

_ AMMOPHILA. 17

23. Ammophila azteca.

Nigra, nitida, fusco-hirta, abdominis medio rufo ; alis fumatis, apice fere hyalinis. 9.

Long. 14-20 millim.

Hab. Mexico, Mazatlan (Forrer).

Head broader than the mesothorax, shining, sparsely covered with longish fuscous

hair, and with moderately large punctures; clypeus scarcely projecting, the apex

broadly rounded ; frontal furrow narrowed, deep; mandibles black, shagreened, and with

a few punctures. Ocelli almost forming a triangle, and widely separated from the eyes.

Third antennal joint nearly twice the length of the fourth. Pronotum with a { -shaped

furrow. Thorax moderately convex, with rather long hair which varies in tint from

fuscous to cinereous; pro- and mesothorax rather strongly punctured; scutellum

strongly longitudinally striolated; postscutellum rugosely punctured; metanotum

closely transversely striated ; metapleure irregularly rugose. The prothorax is depressed

in the centre; there is a depression in the middle of the mesonotum (very broad near

the scutellum); and the metanotum is depressed in the centre. There is a silvery pile

along the oblique furrow on the mesopleure. Coxe sparsely covered with white hair ;

the femora and tibie with a very indistinct hoary pile; calcaria and claws testaceous ;

spines fuscous ; the apices of the tarsal joints obscure testaceous. The apical three

fourths of the second segment of the abdomen, the whole of the third segment, and the

lower side of the fourth, reddish. The upperside of the second cubital cellule is fully

three times the length of the upperside of the third and longer than the space bounded

by the recurrent nervures; the first recurrent nervure is received before the middle;

the second transverse cubital nervure is bent backwards; the third curves backwards

at the top, so that the third cellule is twice the width of the top at the bottom.

An example which is perhaps the male (from Orizaba) has the clypeus and face

densely covered with long silvery pubescence, an oblique stripe on the mesopleura, and

the whole thorax bearing a long pale pubescence ; it also has the clypeus transverse at

the apex, and, if anything, slightly incurved in the middle.

** Petiole entirely red. (Species 24, 25.)

4, Ammophila volcanica. (Tab. I. fig. 19, ?.)

Nigra, argenteo-pilosa, punctata, abdominis segmentis 1°-4™ rufis; alis fumatis. 9.

Long. 19 millim.

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

The silvery pile on the head is densest and longest on the face and clypeus, and

there are a few longish white hairs; the vertex, front, and cheeks are shagreened; the

clypeus bears some punctures and is almost transverse at the apex in the middle, and

the sides are obliquely rounded; front depressed in the centre, and with a shallow

keel; ocelli in a triangle, and surrounded by a furrow. Third antennal joint more

BIOL. CENTR.-AMER., Hymenopt., Vol. II., October 1888. DD

18 HYMENOPTERA.

than twice the length of the fourth. Pronotum with an indistinct shallow curved

furrow. The thorax is finely rugose and opaque, and bears a pile very similar to

that of the head and has some short scattered hairs; on either side of the metanotum

at the apex is a tuft of golden pile; the scutellum bears some coarse longitudinal

striations; postscutellum rugose; metanotum transversely striated, depressed in the

middle; there are no furrows on the pro- and mesonotum ; a curved furrow runs down

from the tegule. Tibiw sparsely, the tarsi densely, spinose, and, like the femora

and cox, bear a hoary pile. The second cubital cellule is about one half wider

than the third, and its top is scarcely one half the length of the bottom; the first

recurrent nervure is received very little before the middle of the cellule; the third

cubital cellule is at the top rather more than one half the length of the bottom; the

third transverse cubital nervure on the lower side curves towards the apex of the wing,

and then about one third from the bottom curves towards the base.

J 25. Ammophila chiriquensis. (Tab. I. fig. 9, 2 *.)

Nigra, aureo-pubescens et fusco-pilosa, sparse punctata; metathorace transverse striato ; clypeo truncato;

petiolo abdominis segmentisque 2° et 3° rufis; alis fere fuscis, apice fumatis. 9.

Long. 23 millim.

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Head broader than the mesothorax; the face densely clothed with golden, the

vertex with a thin short silvery, pubescence; sparsely covered with a longish fuscous

or pale silvery hair. Front and vertex obsoletely punctured ; front deeply depressed: in

the centre, a furrow in the middle, originating at the ocelli which are surrounded by

a furrow ; ocelli placed nearly in a triangle. Clypeus with a few large scattered

punctures, truncated in the middle, slightly retreating, the furrow deep, wide, and

uneven. Third antennal joint twice the length of the fourth. Pronotum with a

)-shaped furrow, the lower part of which is much wider and deeper than the upper.

Thorax finely and sparsely punctured; scutellum coarsely longitudinally striated;

metanotum finely and closely transversely striated. The prothorax above the tubercles,

a broad oblique band on the meso- and metapleure, and a spot on either side of the

metanotum, covered with golden pubescence; the rest of the thorax bears a short

silvery pile and has sparse greyish hair. The central furrow on the mesonotum is

broad and indistinct, that on the prothorax is almost obsolete; a narrow keel runs

down from the tegule. The second joint of the petiole is much thicker than the

basal joint, and like it is finely longitudinally aciculated ; the second joint is for the

greater part black on the top.

* The genital organs figured on Tab. I. fig. 9a do not belong to the male of this species, but to that of

A, alticola.

AMMOPHILA. 19

b. Legs more or less red. (Species 26-28.)

26. Ammophila varipes. (Tab. I. fige. 17; 17a, 3.)

Ammophila varipes, Cresson, Proc. Ent. Soc. Phil. iv. p. 4577.

Hab. Nortu America, Colorado '.—Mexico, Northern Sonora (Morrison).

I believe I am correct in referring the specimen from Sonora to A. varipes. In this

example the face, metanotum, and pleure are covered with a dense silvery pile; and

the top of the thorax is sparsely clothed with silvery or cinereous hair. The clypeus is

rounded, almost transverse in the centre. The thorax is rather strongly and closely

punctured ; the scutellum is rugose; the metanotum is rugosely punctured in the

centre, obliquely striated at the sides. The four anterior legs are reddish, except the

coxe, trochanters, and the extreme base of the femora; the hind pair are black, except

the apex of the femora, the base of the tibiz, and the calcaria, which are reddish. The

anterior legs are sparsely covered with long silvery-white hair; the middle legs bear

but very little hair; the posterior tarsi are slightly spined; all the coxe are thickly

covered with a silvery pile; the posterior legs are hoary. The petiole is entirely black ; —

the other segments are more or less black above. The second cubital cellule above is

twice the length of the third and scarcely one fourth narrower above than below ; the

third cellule is half the length of the lower side above; the third transverse cubital

nervure curves backwards at the middle.

27. Ammophila comanche. (Tab. I. fig. 14.)

Hab. Mexico, Northern Sonora (Morrison).

This species agrees rather closely with A. varipes, but is, I believe, distinct from it.

The pile on the face is denser and thicker; on the thorax above it is quite dense; the

metanotum is transversely striated ; the four anterior femora are not black at the base ;

the hinder femora and tibize are for the greater part reddish beneath, as are also the

tarsi; the abdomen has the petiole black ; the second segment has a black line above

and beneath at the base ; the third segment is black in the middle; the four apical

segments are black, except beneath; tegule red; the costa testaceous at the base;

the second cubital cellule above is five times the length of the third (above it is as long

as the space below between the first recurrent nervure and the second transverse

cubital nervure) ; and the third cellule below is nearly four times the length of the top.

Length 21 millim.

J 98. Ammophila breviceps,

Ammophila breviceps, Smith, Cat. Hymen. Ins. iv. p. 221°.

Hab. Mexico}.

This species agrees in coloration with A. varipes, and A. varipes may indeed be a

DD 2

50 HYMENOPTERA.

variety of A. breviceps. The latter is smaller (8 lines as against 94), and has the meso-

thorax transversely striated (unless Smith, as is likely, has written mesothorax for

metathorax; for he mentions inter alia that the mesothorax is punctured, and no

mention is made of the metathorax at all).

Il. Petiole composed of only one joint. (Species 29-37.)

J 99, Ammophila montana. (Tab. I. fig. 2, 3.)

Nigra, capite et thorace dense fusco-pilosis; clypeo et facie argenteo-pilosis; abdominis segmentis 1° et 2°

lateribus rufis ; clypeis apice truncato; alis fere hyalinis, apice fumatis. ¢.

Long. 20 millim.

Hab, Mexico, Ventanas in Durango 4000 feet (forrer).

The hair on the head is longer than on the thorax, but is hardly so dense; the

silvery pile on the face and clypeus is close, on the sides of the front it is sparser; the

punctuation is sparse, but strong. Third antennal joint a little longer than the fourth.

Thorax strongly punctured ; metathorax opaque, rugosely punctured ; scutellum punc-

tured, a broad and deep depression at its base; the lateral and central furrows on the

mesonotum shallow, not very distinct. Petiole curved, twice the length of the hind

coxee, the basal half sparsely punctured and haired. Legs pruinose, the coxe punctured

and covered with long pale hair.

y 30. Ammophila jason. (Tab. II. fig. 1, 2.)

Nigra, punctata, dense nigro-pilosa ; abdomine rufo; clypeo sinuato; alis fuliginosis. 9.

Long. 21 millim.

Hab. Guatemaa, San Gerénimo (Champion).

Head broad, almost shining, closely and strongly punctured; clypeus ‘broadly

projecting in the middle, the projection sinuated. Third antennal joint more than

twice the length of the fourth. Thorax strongly punctured; metanotum opaque,

transversely rugose ; metapleure obliquely rugosely punctured, running into reticula-

tions; sides of the prothorax strongly striolated ; scutellum punctured, except in the

centre, behind with some striolations; mesonotum broadly depressed laterally and in

the middle; pronotum depressed in the centre. Petiole curved, nearly twice the

length of the hind coxe, punctured, and bearing some rather long hair at the base.

Hind coxe strongly punctured, sparsely covered with longish hair; anterior coxe less

strongly punctured, and with some coarse striolations on the lateral hollow; trochanters

and femora with scattered hair; tibize sparsely, the tarsi thickly, spined. Wings with a

violet tinge; third cubital cellule oblique, slightly narrowed at the top; first recurrent

nervure recurved very shortly before the middle of the cellule.

J AMMOPHILA. — 21

31. Ammophila alpestris. (Tab. I. fig. 16, ¢; Tab. II. fig. 5.)

Nigra, dense et longe fusco-hirsuta ; clypeo et facie dense argenteo-pilosis ; abdominis segmentis 1°-3™ rufis ;

alis fusco-hyalinis, violaceis, apice fumatis. 3.

Long. 15-17 millim.

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Third antennal joint one half longer than the fourth. Head indistinctly, the thorax

strongly, punctured; metanotum transversely rugosely punctured; centre of the pro-

and mesonotum narrowly furrowed, the lateral furrows of the mesonotum narrow.

Petiole slightly curved, nearly twice the length of the hind coxe, at the base bearing

long pale hair, and sparsely punctured. Legs densely pruinose, the coxe, trochanters,

and femora bearing long pale hair.

Y 39, Ammophila sonorensis. (Tab. II. fig. 6.)

Nigra, dense pilosa, punctata ; abdominis segmentis 1°-3™ rufis, 4°-7™ ceruleis ; alis violaceis, apice fuliginosis.

Long. 14-18 millim.

Hab. Mexico, Northern Sonora (Morrison).

Third antennal joint nearly twice the length of the fourth. Hair on the head and

thorax rather long, dense, and black. Head and thorax almost shining, closely

punctured ; metanotum opaque, rugose ; metapleure obliquely striolated and punctured ;

scutellum sparsely punctured, striolated laterally and at the apex; sides of the

prothorax striolated; mesonotum indistinctly furrowed laterally and in the centre,

Petiole scarcely one third longer than the hind coxe; sparsely punctured, and

covered with long black hair. Coxe, trochanters, and femora sparsely covered with

long black hair; tibie pruinose. First recurrent nervure received a little beyond the

middle of the cellule. |

The male has the clypeus rounded at the apex, and bears, as does also the face, a

sparse silvery pile; and the petiole almost twice the length of the hind coxe.

‘33. Ammophila morrisoni. (Tab. II. fig. 10, 3.)

Nigra, punctata; capite et thorace dense et longe cinereo-pilosis; pedibus 4 anterioribus rufis, basi late nigris ;

abdomine nigro, medio late rufo; alis hyalinis, tegulis nigris; clypeo exciso. ¢. ,

Long. 22 millim.

Hab. Mexico, Northern Sonora (Morrison).

The silvery-white hair is long, moderately dense, and almost uniformly distributed.

The third antennal joint is more than one half longer than the fourth. The

head and thorax are closely, but not very deeply, punctured; the scutellum bears

some large punctures; the postscutellum is almost impunctate; the metanotum is

coarsely transversely striated. There is no central furrow on the mesonotum. The

petiole is entirely black; the second segment is lined with black above; the third

segment is entirely red, the fourth red at the base. The petiole at the base and the

22 HYMENOPTERA.

apical segment are aciculated. The legs are covered with a silvery-white pile, which

is especially long and thick on the coxe; the four anterior femora are black to the

middle; the middle tarsi are fuscous towards the apex; the hind legs are entirely

black, except the calcaria, which are red; the spines on the tarsi are sparse. Above

the second cubital cellule is about one third longer than the third, and scarcely so long

as the space between the first and second recurrent nervures; the second recurrent

nervure is received quite close to the second transverse cubital nervure; the third

cubital cellule is about one third longer above than below.

_- 84, Ammophila piceiventris. (Tab. II. figg.7; 8, var.)

Nigra, punctata, longe nigro-pilosa, tegulis abdomineque piceis; alis violaceis. 9.

Long. 19 millim. ,

Hab. GUATEMALA, Quezaltenango 7800 feet (Champion).

The puncturing on the clypeus, face, and front close and strong, as also on the thorax ;

central part of the metanotum opaque, closely transversely punctured; metapleure

strongly and coarsely punctured, running into reticulations; sides of the prothorax

strongly obliquely striolated; scutellum strongly punctured laterally, the centre with

some longitudinal strie. Clypeus convex in the centre, the apex depressed at the base,

almost transverse. yes parallel. Mandibles broadly piceous-red at the base. Third

antennal joint three quarters longer than the fourth. The hair on the thorax is long

and black; there is no pile. Petiole about one fourth longer than the hind coxe,

covered with long black hair, and sparsely punctured. Abdomen bare, the apex only

sparsely clothed with hair, punctured beneath; penultimate segment beneath almost

transverse. Coxe (especially the posterior pair) strongly punctured and covered with

long black hair; trochanters and femora more sparsely clothed with hair ; tibie pruinose

on the underside, sparsely spinose; tibie thickly spinose. The base of the tibie

and the tarsi incline to piceous, as does also the clypeus. First transverse cubital

nervure curved at the top; second cubital cellule one third the length of the bottom

at the top, receiving the first recurrent nervure a little before the middle, the second

not far from the apex, the cubital nervure being considerably angled where it is

received; third transverse cubital nervure bent outwardly at the bottom, directed

towards the base at the top, thus making the cellule narrower at the top than at the

bottom. | |

The piceous colour on the abdomen is marked with black patches; the apical two

segments are for the greater part black.

Other examples from Totonicapam, 8500 to 10,500 feet, are probably referable to

the same species, but differ in being smaller (averaging 13 millim.), and deep black in

colour without any trace of piceous or reddish coloration. This form shows variation

in the intensity of the sculpture and in the shape of the second and third cubital

cellules.

AMMOPHILA.—PELOPQUS. 23

V ; .

35. Ammophila argentifrons,

Ammophila argentifrons, Cresson, Proc. Ent. Soc. Phil. iv. p. 462 (1865) *.

Ammophila mexicana, Saussure, Reise d. Novara, Hymen. p. 25 (1868) *.

Hab. Norva America, Colorado 1.—Mexico, Cordova ?, Teshuitlan 2.

V 36. Ammophila luctuosa.

Ammophila luctuosa, Saussure, Reise d. Novara, Hymen. p. 26°; ? Smith, Cat. Hymen. Ins. iv.

p- 224 (1867) *

Hab. Norra America?.—Mexico, Cordova !, Orizaba!, Teshuitlan 1, Chapultepec’.

It is doubtful if this is identical with the North-American A. luctuosa, Smith.

Saussure’s species comes nearest to A. piceiventris.

Y 87. Ammophila quadridentata.

Nigra, punctata, dense nigro-pilosa; abdomine rufo-testaceo; clypeo quadri-dentato; alis violaceo-fuligi-

nosis. 9.

Long. 24 millim.

Hab. Mexico, Ventanas in Durango 2000 feet (/orrer).

Head broad, rather long, densely covered with black hair, closely and strongly

punctured ; clypeus deeply incised in the middle, the incision bordered by a double tooth,

and there is a nipple-like tooth on either side of this. Thorax densely pilose, the hair

long and black; closely and strongly punctured; metanotum closely, transversely, and

rugosely striolated in the middle, the sides obliquely and rugosely punctured, the

punctures running into reticulations; mesonotum broadly depressed at the sides, the

furrow in the middle narrow and only visible on the basal half; a furrow in the centre

of the pronotum. Scutellum with large separated punctures, the apex more or less

striolated. Petiole slightly curved, fully one fourth longer than the hind coxe;

irregularly blistered and punctured. Coxe (especially the hinder pair) strongly punc-

tured, and covered with long black hair; trochanters and femora sparsely haired.

PELOPQEUS.

Pelopeus, Fabricius, Syst. Piez. p. 202 (1804); Latreille, Hist. Nat. Ins. xiii. (1804); Patton, Proc,

Bost. Soc. Nat. Hist. xx. p. 378.

I am inclined to agree with Patton in separating Chalybion from Pelopeus; the latter

has a black body with yellow markings, the clypeus bilobate, and the petiole as long

as the thorax; Chalybion, again, has the body metallic blue, the clypeus tridentate, and

the petiole hardly so long as the metathorax.

Pelopwus has a wide range over the globe, especially in the warmer regions, and

some of its representatives are very widely distributed. The species construct their

mud-nest frequently in rooms and outhouses, and feed their young upon spiders.

24 HYMENOPTERA.

Kohl (Termés. fiizetek, ix. p. 158) treats Podium and Trigonopsis as subgenera of

Pelopeus. Podium differs from Pelopeus in the prothorax being produced into a neck ;

in the third cubital cellule extending beyond the apex of the radial cellule; in the eyes

reaching nearly to the base of the mandibles; and in the middle coxe being widely

separated, and situated almost laterally. The antenne are placed close to the base of

the clypeus; the head is somewhat triangular; and the body is black, neither metallic

nor with yellow markings. Tvrigonopsis agrees with Podium (and differs from Pelopeus)

in the prothorax being elongated, and in the third cubital cellule extending beyond the

radial; but it differs from Podium in the middle coxe not being so widely separated,

in the prothorax being much more elongate, and the head and apex of the abdomen

triangular in shape, the head being greatly narrowed behind the eyes, the latter

reaching the base of the mandibles. The body is metallic; the second recurrent

nervure is usually interstitial.

1. Pelopeus cementarius. (Tab. II. fig. 9.)

Sphex cementaria, Drury, Exot. Ins. i. p. 105, t. 44. figg. 6, 8.

Pelopeus cementarius, Saussure, Reise d. Novara, Hymen. p. 29.

Sphex flavipunctata, Christ, Hymen. p. 301. 16, t. 30. fig. 1.

Sphex lunata, Fabr. Ent. Syst. 1. p. 208.

Pelopeus lunatus, Fabr. Syst. Piez. p. 203. 4.

Pelopeus affinis, Fabr. loc. cit. p. 205. 5.

Pelopeus flavipes, Fabr. loc. cit. p. 202.18; Smith, Cat. Hymen. Ins. iv. p. 233.

Pelopeus architectus, Lepel. de St.-Fargeau, Hist. Nat. Ins., Hymén. i. p. 313.

Pelopeus solieri, Lepel. de St.-Fargeau, loc. cit. p. 318; Smith, Cat. Hymen. Ins. iv. P 281.

Pelopeus canadensis, Smith, loc. cit. p. 233.

Sphex jamaicensis, Fabr. Ent. Syst. ii. p. 203.

Pelopeus jamaicensis, Fabr. Syst. Piez. p. 204.

Hab. Norra America, Canada, United States—Mexico, Ventanas 2000 feet, Presidio

(Forrer); British Honpuras (Blancaneauz) ; Nicaracua, Chontales (Janson); Panama

(Boucard).—BRaziu; ANTILLES. —

The numerous specimens from our region do not show much variation in colour, the ©

pronotum broadly above, the tubercles, tegule, scutellum, postscutellum, a mark on

the side of the metathorax, the median segment, and a broad band on the second

abdominal segment, having the usual yellow markings. There is a slight variation in

the amount of yellow on the legs; and the wings vary somewhat in tint.

V2. Pelopeus vindex.

Pelopeus vindex, Lepel. de St.-Fargeau, Hist. Nat. Ins., Hymén. iii. p. 317.

Pelopeus vindex, Saussure, Reise d. Novara, Hymen. p. 31°.

Pelopeus figulus, Dahlbom, Hymen. Eur. i. p. 23; Smith, Cat. Hymen. Ins, iv. p. 234.

Pelopeus chilensis, Spinola in Gay’s Hist. fisica y polit. de Chile, vi. p. 395.

PELOP@US.—CHALYBION. 25

Pelopeus assimilis, Dahlbom, Hymen. Eur. i. p. 23.

Pelopeus annulatus, Cresson, Proc. Ent. Soc. Phil. 1865, p. 185”.

Hab. Norta America.—Mexico, Tampico 1, Cordova !, Orizaba!.—SoutH AMERICA,

Brazil, Chili, Patagonia; ANTILLES, Cuba 2.

Vv 3. Pelopeeus histrio. (Tab. Il. figg. 11; lla,c.)

Pelopeus histrio, Lepel. de St.-Fargeau, Hist. Nat. Ins., Hymén. ii. p. 316.

Pelopeus histrio, Saussure, Reise d. Novara, Hymen. p. 32°.

Pelopeus bimaculatus, Lepel. de St.-Fargeau, loc. cit. p. 319.

Pelopeus fistularius, Dahlbom, Hymen. Eur. i. p. 28.

Hab. Mexico !, Atoyac in Vera Cruz (Schumann); GuatemaLa, El Reposo, Pantaleon,

San Gerénimo, Panzos in Vera Paz (Champion).—Sovutu America !, Cayenne, Brazil.

CHALYBION.

Chalybion, Dahlbom, Hymen. Europ. i. p. 21 (1845).

i. Wings dark-violaceous ; body covered with black hair.

1. Chalybion czeruleum.

Sphex cerulea, Linneus, Syst. Nat. i. p. 941.

Pelopeus ceruleus, Saussure, Reise d. Novara, Hymen. p. 26°.

Chalybion ceruleum, Patton, Proc. Bost. Soc. Nat. Hist. xx. p. 378.

Hab. Norta America, Middle and Southern States 1.—Mexico, Cordova ', Jaral in

Guanajuato (Schumann).

J 9, Chalybion zimmermanni. (Tab. II. figg. 12; 124, ¢.)

Pelopeus zimmermanni, Dahlbom, Hymen. Eur. i. p. 221; Patton, Proc. Bost. Soc. Nat. Hist. xx.

p. 379.

Pelopeus zimmermanni, Saussure, Reise d. Novara, Hymen. p. 26’.

Hab. Nortn America, Carolina 1—Mexico, Ventanas (Forrer), Cordova?, Michoa-

can *, Valladolid in Yucatan (Gawmer).

C. (Pelopeus) californicum, Saussure (Reise d. Novara, Hymen. p. 26), is no doubt

identical with this species.

ii. Wings pellucid, smoky at the apex; body covered with cinereous hair.

V3. Chalybion aztecum.

Pelopeus aztecus, Saussure, Reise d. Novara, Hymen. p. 26°.

Hab. Mexico, Atoyac in Vera Cruz (Schumann), Tampico!, Jalapa‘, Michoacan’,

Teapa in Tabasco (4. H. Smith).

BIOL. CENTR.-AMER., Hymenopt., Vol. II., November, 1888. EE

26 HYMENOPTERA.

This I consider to be probably conspecific with C. zimmermanni. In the latter I find

some variation in the colour of the wings and pubescence ; and in the examples I regard

‘as its male the wings are hyaline, smoky at the apex, and the pubescence is cinereous.

In fact the difference in the colour of the wings and pubescence is doubtless a sexual

character. Out of nearly thirty males before me only one has the wings entirely

violaceous.

TRIGONOPSIS.

Trigonopsis, Perty, Del. Anim. Art. Brasil. p. 142 (1830-1834).

This is exclusively a Neotropical genus and contains few species.

1. Trigonopsis violaceus. (Tab. II. fig. 13.)

Trigonopsis violaceus, Smith, Ann. & Mag. Nat. Hist. 2nd ser. vii. p. 31 (1851)’.

Hab. Guatemata, San Juan in Vera Paz (Champion); Panama, David in Chiriqui

(Champion).—Braziu !, Para}.

PODIUM.

Podium, Fabricius, Syst. Piez. p. 183 (1804).

This is also treated as a subgenus of Pelopwus by Kohl (Termés. fiizetek, ix. p. 158).

The species are exclusively American, chiefly Neotropical. |

1 (8). Legs black.

2 (7). Second cubital cellule not narrowed at the top; prothorax and petiole

not very elongate ; second recurrent nervure received a little past

the middle.

3 (6). Wings yellow, the second transverse cubital nervure curved.

4 (5). Tegule black; petiole (2?) more than twice the length of the hind

coxe ; pubescence on the metanotum not golden . . . . . . = albovillosum.

5 (4). Tegule red; petiole (9) the length of the hind coxe; pubescence

on the metanotum golden ... . toe ee luteipenne.

6 (83). Wings violaceous, spotted with fuscous ; second transverse cubital

nervure straight. . . . 2... «ss oo + 6 « « « bugabense.

7 (2). Second cubital cellule narrowed at the top ; second recurrent nervure

received before the middle of the cellule ; prothorax and petiole

elongate . . . 2. 6 1 ew ee ee ~ . . . bellum.

8 (1). Legs red (second cubital cellule subtrigonal, the 3 recurrent nervures

received at the base and apex) . . . . . . . . . . . . rufipes.

\ 4. Podium albovillosum. (Tab. II. figg. 14, 144, 148, 3.)

“Nigrum, albo-pilosum ; metanoto transverse punctato ; alis flavis, apice fumatis. ¢ Q.

Long. 30-34 millim.

Hab, Panama, Bugaba (Champion).

PODIUM. 27

Head and thorax sparsely punctured, the mesothorax and scutellum more shining

and almost impunctate; metanotum almost opaque, closely transversely punctured and

deeply and widely sulcated down the middle. Clypeus in male produced in the middle,

and deeply incised there, the sides of the incision produced into two teeth; in the

female not so much produced, the incision very slight, and the sides scarcely produced

into teeth. Petiole rather more than twice the length of the hind coxa, villose.

Tibiz and tarsi covered with a close short downy pile, the tibize bearing a few bristles.

The first recurrent nervure is received a little before the first transverse cubital nervure,

the second a little beyond the middle of the cellule.

V9, Podium luteipenne. (Tab. II. figg. 15, 15 a.)

Pepsis luteipennis, Fabr. Syst. Piez. p. 210.

Podium luteipenne, Dahlbom, Hymen. Eur. i. p. 23; Lepel. de St.-Fargeau, Hist. Nat. Ins. , Hymén.

iii. p. 824; Smith, Cat. Hymen. Ins. iv. p. 235, t. 6. fig. 2°.

Podium flavipenne, Latr. Gen. Crust. et Ins. iv. p. 59.

Podium latreillei, Spinola, Mem. Accad. Torino, xiii. ser. 2, p. 51.

Hab. Panama, San Feliz (Champion).—Soutu Amemrica, Cayenne}, Brazil }.

A smaller species than P. albovillosum; differing otherwise in having the legs more

or less red, the tegule red, the thorax not so densely pilose, and the pile on the meta-

thorax with a golden hue, the incision in the clypeus deeper and at the middle the

clypeus does not project so much, the face covered with a dense silvery-white pile,

the petiole shorter (in female), not being much longer than the hind coxe, the abdomen

longer and narrower, and generally it is a more slender-looking insect.

V3. Podium bugabense. (Tab. II. figg. 16, 16 a.)

Nigrum, longe nigro-pilosum, clypeo octo-dentato ; metanoto punctato; alis fere hyalinis, fusco-maculatis.

Long. 24 millim.

Hab. Panama, Bugaba (Champion).

Head bearing rather long black hairs; the cheeks sparsely covered with silvery pile.

Clypeus broadly rounded, armed in the centre with eight short stout teeth. Prothorax

not much longer than broad, furrowed in the centre above; covered with a dense

silvery pile, besides the long hair. Pro- and mesonotum very sparsely punctured ;

the pleure rather strongly punctured; metanotum closely (but not very strongly) punc-

tured, broadly and deeply furrowed down the centre, the furrow transversely striated.

Petiole short, about one third longer than the hind coxe, curved, about one third of

the length of the abdomen. Coxe and femora sparsely covered with long hair; the

tibie beneath with a dense fulvous pile; tarsi rather strongly spinose. The second

cubital cellule of equal length throughout, above a little longer than the third cellule ;

the first recurrent nervure is received a little in front of the second, the second recur-

rent at an equal distance before the third transverse cubital nervure.

EE 2

{ 28 HYMENOPTERA.

4, Podium bellum. (Tab. II. figg. 17, 17a.)

Nigrum, sparse villosum et pilosum; clypeo inciso, bidentato; metanoto transverse striato; cellula cubitali

2° latiore quam longiore; alis fusco-maculatis. ¢.

Long. 21 millim.

Hab. Panama, Bugaba (Champion).

Face rather densely covered with a silvery-white pubescence; the front and vertex

almost glabrous, impunctate; the incision in the clypeus is broad and deep, the teeth

stout. Pro- and mesothorax sparsely punctured, shining, covered (but not very thickly)

with rather long, soft, white hair, the metanotum with a shorter, closer, and thicker

pile. Metanotum punctured and transversely striated, the centre very slightly depressed.

Prothorax narrowed in front, longer than broad, nearly as long as the mesothorax to _

the middle of the scutellum, its sides behind obliquely striolated. Abdomen slender, |

acuminate, scarcely one fourth longer than the petiole. Petiole curved, three times

the length of the hind coxe, sparsely pilose, shining. Legs downy, the coxe with

rather long pale hairs, the tibie almost without bristles, the tarsi with stout bristles.

Wings smoky-violaceous, clouded at the transverse basal nervure, below the stigma at

the second cubital cellule, and at the apex; second cubital cellule broader than long,

narrowed above; the first recurrent nervure almost interstitial, the second received

before the middle of the cellule.

This species forms a transition to Trigonopsis, the only difference being that the head

is not so triangular.

, 5. Podium rufipes. (Tab. II. figg. 18, 18 a.)

? Podium rufipes, Fabr. Syst. Piez. p. 183.

Podium rufipes, Saussure, Reise de Novara, Hymen. p. 86'; Cresson, Trans. Amer. Ent. Soc. iv.

p- 211’.

Hab. Nortu America, Texas ?.—MeExtco1, Atoyac in Vera Cruz (Schumann), Temax

in North Yucatan (Gauwmer).—BRazIL.

In the male of this species the head and thorax are covered rather densely with long

black hair; the clypeus and cheeks have a velvety pile; the clypeus is incised in the

middle, and has a tooth on either side of the incision; the mandibles are black; the

wings are much more suffused with fuscous and have a violaceous tinge, and the

nervures and tegule are blackish.

The Brazilian P. denticulatum, Smith, is very closely allied to P. rujipes (if the two

be not one and the same species), but differs from it in the clypeus having six teeth in

the female; asin P. rufipes, the clypeus in the male has only two teeth and the

body is more pubescent in the male than in the female.

SPHEX. 29

SPHEX.

Sphex, Fabricius, Ent. Syst. 11. p. 198 (1793) (partim) ; Patton, Proc. Bost. Soc. Nat. Hist. xx.

p. 882.

Chlorion, Latreille, Hist. Nat. Crust. et Ins. iv. p. 57 (1809) (partim) ; Patton, loc. cit. p. 379.

Proneus, Latreille, loc. cit. iv. p.56 (1809); W. Saunders, Trans. Ent. Soc. Lond. iii. p.58 (1841).

Priononyx, Dahlbom, Hymen. Eur. i. p. 28 (1848) ; Patton, loc. cit. p. 384.

Harpactopus, F. Smith, Cat. Hymen. Ins. iv. p. 264 (1856).

Isodontia, Patton, loc. cit. p. 380 (1881).

Sphex, as here defined, includes Chlorion, Isodontia, Sphex (sensu stricto, auct.),

Harpactopus, and Priononyz. The characters on which these genera are grounded

merge so gradually into each other that they do not furnish a rigid means of definition ;

and, moreover, if these names be accepted as valid, it would inevitably necessitate the

creation of other genera. Under these circumstances I quite agree with Kohl and

André in sinking Jsodontia, Chlorion, Harpactopus, and Priononys to sectional value.

The genus is of almost world-wide distribution; and the species, so far as is known,

prey on Orthoptera.

i. Tarsal claws unidentate. (Chlorion and Proneus.)

This section is representative of the Oriental region and of America. The species

are large and metallic blue or green or violet. The tarsal claws are unidentate; the

clypeus has three teeth in the female and five in the male; and the petiole is some-

what longer than the hind coxe. The species are few in number. Cresson treats

Chlorion as a distinct genus. |

1. Sphex cerulea.

Sphex cerulea, Drury, Exot. Ins. ii. p. 75, t. 39. f. 8.

Chlorion ceruleum, Smith, Cat. Hymen. Ins. iv. p. 2887; Riley, Ist Report U.S. Ent. Comm.

p. 319, fig. 58 (1878) *.

Chlorion cyaneum, Dahlbom, Hymen. Eur. i. p. 24.

Hab. Norra America ! 2,—Mexico |.

S. cerulea feeds on spiders and also on locusts. Riley? states that one-of his

assistants, Mr. A. N. Godfrey, saw one sting a pupa of the Rocky-Mountain locust

(Caloptenus spretus), bury it in its nest, and lay an egg at the point of junction

between the hind femur and the body.

30 HYMENOPTERA.

ii. Tarsal claws bidentate. (Sphex and Isodontia.)

A. Petiole as long as or scarcely longer than the hind core; radial cellule extending

beyond the third cubital cellule; clypeus in female crenate or with short teeth.

(Sphex, Cresson.)

Ng, Sphex erythroptera. (Tab. III. fig. 1,2; lac.)

Nigra, nigro-pilosa ; alis rufo-flavis, apice fere fumatis. ¢ 9.

Long. 30-34 millim.

Hab. Mexico, Orizaba (H. H. Smith), Temax in North Yucatan (Gaumer); BritisH

Honpuras, Cayo (Blancaneaux); GuateMaLa, Las Mercedes 3000 feet, Volcan de.

Atitlan 2500 to 3500 feet, San Gerénimo (Champion); Costa Rica, Cache (Rogers) ;

Panama, Volcan de Chiriqui 3000 feet (Champion).

Antenne a little longer than the thorax; the third joint two and a quarter times

longer than the second. Head subopaque, densely covered with longish black hair ;

apex of the clypeus projecting, slightly incurved in the centre; face and clypeus with

scattered punctures; eyes almost parallel along the face, slightly converging at the

top. Mandibles aciculated, the basal half with large punctures, the central part more

or less obscure rufous. Thorax sparsely clothed with hair and thickly covered with

dense, black, velvety pile; top of the pronotum rather sharply raised and separated

from the mesonotum, the centre slightly depressed ; centre of the mesonotum furrowed ;

scutellum impunctate, a broad shallow depression down the middle; postscutellum

with a more or less broad depression in the centre, making it almost bituberculate ;

metanotum opaque, coarsely alutaceous, a broad furrow in the centre, the furrow

broadest at the apex. Petiole shorter than the hind coxe, shining, sparsely covered

with long black hairs. Abdomen scarcely so long as, and narrower than, the thorax ;

shining, impunctate at the base; the apex sparsely punctured and bearing long hair.

Posterior tibiae and tarsi behind clothed with a fulvous pile; rather strongly pilose.

First and second transverse cubital nervures very oblique, the first slightly curved, the

second quite straight ; the third at the base directed outwardly below the middle, then

directed sharply towards the base of the cellule (above, the top of the cellule is less

than the space bounded by the second transverse and second recurrent nervures); the

second recurrent nervure is received a little before the middle of the cellule; the first

recurrent nervure is received in the apical third.

Under the name of Sphex rujipennis, Fabr., a species has been recorded from Persia,

India, North Africa, and South America. This species does not appear to be separable

from S. erythroptera by any very tangible character, and I should have been inclined to

consider it identical with the Indian one, which is certainly the S. rujfipennis, Fabr.

(=S. diabolicus, Smith), if the genital armature of the males were not so markedly

SPHEX. 3l

different. It is, however, quite possible that S. erythroptera is identical with S. ruji-

pennis, Kohl (nec rufipennis, Fabr.=/luteipennis, Mocsdry), a species also known from

India and North Africa, and, as Kohl informs me, from Venezuela; or, at least, a form

which cannot be separated from it. ‘Kohl tells me also that the true S. rufipennis,

Fabr., differs from the species he has described under that name (Termés. fiizetek, ix.

p- 198) in having the postscutellum bituberculate, the antenne thinner, and the wings

black at the base. The furrow in the postscutellum varies in width and depth in the

specimens from our region, and the wings are sometimes blackish at the base (but not

to the same extent as in the form S. diabolicus, Smith); consequently I cannot look

upon these characters as altogether satisfactory for separating the two. In view of the

fact that the male-armature is so distinct in S. rufipennis, Fabr. (which was first

described from India), I have thought that less confusion will be created by giving our

species a distinct name, leaving it for further research to decide if it is identical with

S. lutetpennis, Mocsary.

J 3. Sphex beata. (Tab. III. figg. 2, 2; 2a, ¢.)

Nigra, femoribus tibiisque anticis rufis, capite, pro- et mesonoto dense aureo-villosis, metanoto dense albo-

villoso ; alis violaceis. of @.

Long. 30 millim. .

Hab. Mexico, Temax in North Yucatan (Gaumer); Guatema.a, Pantaleon 1700 feet

(Champion).

On the head the golden pile is very dense, except on the centre of the clypeus, and

on the vertex and occiput (perhaps rubbed off); the pronotum in front is bare, and the

centre of the mesonotum also. yes parallel, but very slightly converging at the top.

Clypeus with some large punctures, the apex rounded, the furrow wide and deep; basal

half of the mandibles reddish, aciculated. Mesonotum slightly depressed towards the

apex in the centre, as is also the pronotum ; metanotum opaque, coarsely transversely

aciculate, densely covered with a soft, white, woolly pubescence, and slightly depressed

in the centre towards the apex. Petiole as long as the hind coxe, sparsely covered

with white hair. Apex of the abdomen slightly punctured, and sparsely covered with

long hair.

/ 4, Sphex hirsuta. (Tab. III. figg. 3,2; 34, 3.)

Sphex hirsutus, Saussure, Reise d. Novara, Hymen. p. 40 (¢)’.

Hab. Mexico (Sallé), Orizaba 1, Cordova ! (Sumichrast).

The female has been captured in Mexico by Sallé. It has the mesonotum in the

centre and the pleure less strongly pilose than in the male; the tegule rufous (in the

male they are more or less blackish); the labrum keeled down the centre; and the

mandibles broadly black at the base (this being also the case, but to a less extent, in

the male).

32 HYMENOPTERA.

y 5. Sphex guatemalensis. (Tab. III. figg. 4,9; 44,¢.)

Nigra, capite et thorace longe aureo-hirtis, abdomine subtus, basi mandibularum, femoribus subtus late, geni-

culis, tibiis tarsisque, rufis; alis fusco-hyalinis, apice fumatis, fere violaceis. ¢ Q.

Long. 28 millim.

Hab. GuateMata, San Geronimo (Champion).

The golden hair is very bright and dense on the face, clypeus, front, pronotum above,

prosternum, sides of mesonotum, mesopleure below the tegulz, tubercles, and on meta-

notum ; on the rest of the thorax it is thinner and fulvous. Middle of the clypeus

projecting, incised in the centre. Scutellum comparatively bare, deeply sulcated in the

centre, and more shining than the mesonotum. A furrow in the centre of the meta-

notum. Petiole as long as the hind coxe, densely covered with pale golden hair, sulcated

in the centre above. Abdomen with an olive tinge, sericeous. Coxe and trochanters

densely covered with a golden pile, the tibie and tarsi also pilose.

The male has, as usual, the hair on the head and thorax much thicker and longer ;

the abdominal segments reddish along the sides and at the extreme base and apex above ;

and the clypeus truncated at the apex and not produced in the middle. The amount of

red on the femora varies.

S. guatemalensis may be known from SN. hirsuta by the wings not being yellow and

having the nervures black, the petiole sulcated, and the abdomen reddish beneath, and

also by the much brighter golden pile, &c.

N 6. Sphex tinctipennis. (Tab. III. fig. 5, ¢.)

Nigra, capite thoraceque longe fusco-pilosis, facie argenteo-pilosis; clypeo truncato; alis flavo-fuscis, apice

fumatis. @.

‘Long. 20 millim. ~

Hab. Guatemata, El Tumbador 2500 feet (Champion) ; Costa Rica, Cache (Rogers).

Sparsely punctured, shining ; metanotum opaque, finely transversely striated. Hair

longish, varying in tint from pale to fuscous, but inclining to fulvous on the meta-

notum ; the tubercles, a stripe along the top of the pronotum, the metanotum at the

base, and a spot on either side of the apex of the latter, silvery. Antennz longer than

the thorax, the fourth joint about half the length of the third. Apex of the clypeus

projecting, almost truncated, but indistinctly waved. yes slightly converging at the

apex. Frontal furrow small, narrow, shallow. F urrow in the centre of the meso-

notum indistinct, but along the sides broad, shallow ; scutellum indistinctly depressed

in the centre. Petiole stout, curved, and as long as the hind coxe; sparsely covered

with long pale hairs. Abdomen sparsely clothed at the base with soft pale hair, at

the apex still more sparsely with longer fuscous hair. ‘Legs more or less pruinose,

the coxe bearing longish silvery hair, the trochanters and femora more sparsely clothed

with hair. Second cubital cellule a little wider above than beneath ; the third at the

top about one fifth of the length of the bottom, being there less than the space bounded

by the second transverse cubital and the second recurrent nervures.

SPHEX. 33

7. Sphex chichimeca. (Tab. ITI. figg. 6, 6a, 3.)

Sphex chichimecus, Saussure, Reise d. Novara, Hymen. p. 40°.

Hab. Mexico, Orizaba!; Honpuras, Ruatan Island (Gaumer).

A specimen from Honduras (presumably identical with 8. chichimeca) has the wings

deep violaceous throughout and hardly fainter in tint towards the apex; the apical

ventral segments thickly covered with rather long fulvous hair; and the petiole a little

longer than the hind coxe.

Vg. Sphex singularis. (Tab. III. figg. 7, 74,3.)

Sphex singularis, Smith, Cat. Hymen. Ins. iv. p. 261 ( 3)’.

Nigra, longe fulvo- vel aureo-hirta; abdomine sericeo, basi interdum rufo-maculata; alis hyalinis, apice

fumatis. <¢.

Long. 18--21 millim.

Hab. Mexico, Presidio (Forrer), Teapa in Tabasco (H. H. Smith); GuateMata,

San Gerénimo (Champion); Honpuras!; Panama, Volcan de Chiriqui 2000 to 3000 feet

(Champion).

Antenne as long as the thorax, thickened towards the apex, covered with a sericeous

pile; the fourth joint scarcely half the length of the third, and shorter than the fifth.

Face densely covered with long golden, the front and vertex more sparsely with

fulvous, hair; clypeus almost truncate at the apex; vertex and front opaque, closely

aciculate. Thorax opaque, closely aciculate ; a line on the top of the pronotum, the

tubercles, a line at the base of the metanotum, an oblique one along the metapleure,

and a spot on either side of the metanotum, silvery; the hair pale fulvous, long and

dense, especially on the metanotum; the furrow on the mesonotum shallow ; scutellum

convex, without depression in the centre. Petiole a little longer than the hind coxe ;

silvery-pilose, and covered with long pale hair. Abdomen with a bluish tinge, seri-

ceous, the base and apex bearing fuscous hair; the sides at the base of the first and

second segments rufous; a tuft of golden hair on either side of the apical segment.

Coxee densely covered with silvery pile, and with long pale fulvous hair; trochanters,

femora, and tibiz sericeous; calcaria, tibial spines, and the brush at the base of the

metatarsus, reddish. Second cubital cellule nearly equal in width at the top and

bottom; the third much narrowed at the top, being there scarcely half the length of

the space bounded by the second recurrent and second transverse cubital nervures ;

first recurrent nervure received quite close to the second transverse cubital.

So far as Smith’s description! goes, it only differs from the specimens I have

described in the third cubital cellule being “‘ subpetiolate.”

9. Sphex tepaneca.

Sphex tepanecus, Saussure, Reise d. Novara, Hymen. p. 41, t. 2. fig. 23 (¢)".

Hab. Mexico, Mextitlan !.

BIOL. CENTR.-AMER., Hymenopt., Vol. I1., February 1889. FF

34 | HYMENOPTERA.

10. Sphex mexicana.

Sphex mexicana, Taschenberg, Zeitschr. ges. Nat. Sachs. Thiir. xxxiv. p. 416 (1869)’.

Hab. Mexico }.

‘11. Sphex ichneumonea. (Tab. III. figg. 8,9; 84, ¢.)

Sphex ichneumonea, Linn. Syst. Nat. i. p. 959; Fabr. Ent. Syst. ii. p. 207; Dahlbom, Hymen.

Eur. i. p. 26; Lepel. de St.-Fargeau, Hist. Nat. Ins. Hymen. iii. p. 346; Smith, Cat.

Hymen. Ins. iv. p. 261’; Packard, Guide to the Study of Ins. p. 167 (1869).

Sphex dorsalis, Lepel. de St.-Fargeau, loc. cit. p. 347; Smith, Trans. Ent. Soc. Lond. 1862, p. 36’.

Sphex micans, Taschenberg, Zeitschr. ges. Nat. Sachs. Thiir. xxxiv. p. 419.

Sphex cresus, Lepel. de St.-Fargeau, loc. cit. p. 8351; Smith, Cat. Hymen. Ins. iv. p. 262°.

Hab. Norra America! 3,—Mexico 3, Orizaba (Ff. D. G.), Atoyac in Vera Cruz (Schu-

mann), Teapa in Tabasco (H. H. Smith), Valladolid in Yucatan (Gaumer) ; GUATEMALA,

El Reposo, Zapote, San Gerdénimo (Champion) ; Nicaragua, Chontales (Belt); Costa

Rica, Cache (Rogers); Panama, Bugaba, Volcan de Chiriqui (Champion), Aspinwall ?.

—Sourn America, Cayenne ?, Ega*, Santarem ?.

This is a somewhat variable species in size and coloration. The tegule are usually

red, but sometimes verge into blackish; the amount of red on the abdomen varies in

extent, and the apex is sometimes more or less of that colour, and the petiole occa-

sionally shows traces of red ; the femora are sometimes lined above with black in both

sexes; and the colour of the wings varies in intensity. In the male the hind tibie

are usually lined behind with black; and the tarsi are more or less black. In some

examples the hair inclines to cinereous in tint, but this is perhaps due to discoloration.

On the habits of this species, Mr. Stretch says:—“ From the sandy embankments of

the railway at Aspinwall, it constructs a long burrow perpendicularly into the hard

sand. I saw it bring a grasshopper as large as itself, with great difficulty, to the

entrance of its burrow; laying it down, it retreated, apparently to see that all was

ready, and then, re-emerging, seized the grasshopper and backed into its hole”

(cf. Smith, Trans. Ent. Soc. Lond. 1862, p. 36).

Packard (doc. cit.) gives the following account of its mode of life :—

“In the last week of July, and during August and early in September, we noticed

nearly a dozen of these wasps busily engaged in digging their holes in a gravelly walk.

In previous seasons they were more numerous, burrowing into grassy banks near the

walk. The holes were from four to six inches deep. In beginning its hole, the wasp

dragged away with its teeth a stone, one half as large as itself, to a distance of eight

inches, while it pushed away others with its head. In beginning its burrow it used its

large and powerful jaws almost entirely, digging to the depth of an inch in five minutes,

completing its hole in about half an hour. After having inserted its head into the

hole, where it loosened the earth with its jaws, and threw out the earth with its jaws

SPHEX. 35

and fore legs, it would retreat backwards and push the dirt still further from the

mouth of the cell with its hind legs. In cases where the further progress of the work

was stopped by a stone too large for the wasp to remove or dig round, it would abandon

it and begin a new hole. Just as soon as it reached the required depth, the wasp flew

a few feet to the adjoining bank, and falling upon an Orchelimum vulgare or O. gracile

(two common grass-green katydid-like grasshoppers, about an inch long) stung and

paralyzed it instantly, bore it to its nest and was out of sight for a moment, and while

in the bottom of its hole must have deposited its egg in its victim. Reappearing, it

began to draw the sand back into the hole, scratching it in quite briskly by means of its

fore spiny tarsi, while standing on its two hind pairs of legs. It thus threw in half an

inch of dirt upon the grasshopper and then flew off. In this way one Sphex will make

two or three such holes in an afternoon. The walk was hard and composed of coarse

sea-gravel, and the rapidity with which the wasp worked her way in with tooth and

nail was marvellous.”

B. Petiole more than twice the length of the hind core ; radial cellule not extending

beyond the third cubital cellule ; clypeus in female usually with a slight notch in

the middle and a small tooth on each side of it. (Isodontia, Patton.)

V 12. Sphex azteca. (Tab. IIL. fige. 9, 9a, ¢.)

Sphex aztecus, Saussure, Reise d. Novara, Hymen. p. 38, t. 2. fig. 22 (9 )*.

Hab. Mexico, Cordova 1, Valladolid in Yucatan (Gawmer).

V 43. Sphex costipennis. (Tab. III. fig. 10, 3.)

Sphezx costipennis, Spinola, Mem. Accad. di Torino, xiii. p. 54 (1858) (?)'; Saussure, Reise d.

Novara, Hymen. p. 39’.

Sphea petiolata, Smith, Cat. Hymen. Ins. iv. p. 259 (3)°; Taschenberg, Zeitschr. ges. Nat. Sachs.

Thiir. xxxiv. p. 417%. .

Hab. GuateMa.a, San Gerdnimo, El Reposo 800 feet (Champion); Costa Rica, Cache

(Rogers); Panama, Bugaba 800 to 1500 feet (Champion).—Guiana, Surinam ?; Brazit,

Novo Friborgo 4, Para ! 23,

Vou. Sphex apicalis.

Sphex apicalis, Harris, Ins. of Massachusetts’; Smith, Cat. Hymen. Ins. iv. p. 262 (¢)?; Saussure,

Reise d. Novara, Hymen. p. 38 (¢ 2)’.

Sphex apicalis, var. mexicana, Saussure, loc. cit.‘

Sphex philadelphica, Lepel. de St.-Fargeau, Hist. Nat. Ins. Hymen. iii. p. 340°.

Isodontia philadelphica, Patton, Proc. Bost. Soc. Nat. Hist. xx. p. 380°.

Hab. Norta America, United States 1235 6—Mexico, Orizaba4, J alapa 4, Cordova 4.

Saussure says that his var. mexicana does not differ in any essential particulars from

| FF 2

36 HYMENOPTERA.

S. nigella, Smith (Cat. Hymen. Ins. iv. p. 255), from Shanghai ; Kohl (Termés. fuzetek,

ix. p. 193) also regards the two as possibly identical, and records S. nigella from Swan

River.

w 15. Sphex robusta. (Tab. III. fig. 11, ¢ .)

Nigro-cerulea, sparse punctata, breviter pilosa; alis violaceis. dQ.

Long. 23 millim. '

Hab. Mxxico, Atoyac in Vera Cruz (Schumann), Temax in North Yucatan (Gauwmer).

Antennal joints somewhat thickened towards the base and apex ; the third joint

much thinner than the others, and fully one quarter longer than the fourth. Head

large, not dilated behind the eyes, but largely developed there ; sparsely punctured ;

the vertex shining, bearing a few long hairs and almost devoid of pubescence; front

more thickly clothed with hair, and bearing a silvery pubescence ; clypeus, face, and

cheeks densely silvery-pubescent, and thickly covered with long black hair, the hair

becoming rufous on the apex of the clypeus. Apex of the clypeus with two stout teeth

in the middle, the teeth separated by an incision as broad as themselves ; mandibles

shining, broadly excavated at the base on the outer side, the apical tooth large and

blunt. Thorax punctured, the metathorax very closely and transversely so and

opaque; the mesonotum covered with a rather short sparse griseous pubescence, the

pleure more thickly pubescent; the metapleure densely covered with greyish hair ;

the metanotum bearing long blackish hair, the pleure closely, almost rugosely, punc-

tured; scutellum shining, sparsely punctured, slightly depressed in the middle.

Petiole hardly twice the length of the hind coxe. Abdomen narrow, almost glabrous,

as long as the thorax; the apical segment with a few blackish hairs, and irregularly

punctured. Coxe punctured and bearing some pale hairs ; femora sparsely punctured ;

tibiee and tarsi with the spines stout, blunt; the metatarsal brush rufous. The wings

are paler towards the apex; the second cubital cellule receives the recurrent nervure

near the apex, and is of nearly equal width throughout ; the third cubital cellule

receives the second recurrent nervure at a somewhat greater distance from the second

transverse cubital nervure; the radial cellule extends a little beyond the third cubital.

In the male the clypeus has a slight indentation in the middle; the head and thorax

are clothed with rather long erect pale hair (much longer and thicker than in the

female); the petiole is a little longer; the apical four ventral segments bear tufts of

hair in the centre; and the wings are clearer posteriorly.

iii. Tarsal claws 5-dentate. (Priononyx, Dahlbom.)

16. Sphex thome. (Tab. III. figg. 12,2; 124, 3.)

Sphex thome, Fabr. Ent. Syst. ii. p. 199.

Pepsis thome, Fabr. Syst. Piez. p. 209.

Priononyx thome, Dahlbom, Hymen. Eur. i. p. 28 ; Smith, Cat. Hymen. Ins. iv. p. 265’; Saussure,

Reise d. Novara, Hymen. p. 437; Patton, Proc. Bost. Soc. Nat. Hist. xx. p. 384.

SPHEX.—RHINOPSIS. 37

Hab. Norta America, United States !2%—_Mexico, Presidio (Forrer), Michoacan ? ;

Panama, Volcan de Chiriqui 2000 to 6000 feet (Champion).—Souta America}, Brazil },

Amazons !, Buenos Ayres”, Monte Video?; AntiLiEs?, St. Thomas 1, Jamaica}, Cuba ?.

Fam. AMPULICIDA.

| AMPULEX.,

Ampulex, Jurine, Nouv. Méth. de Class. les Hymén. et les Dipt. p. 182 (1807).

This genus was founded on Chlorion compressum, Fabr., and Ampulex fasciata, Jurine.

The former has four distinct cubital cellules, and the body shining metallic green,

coppery, or blue; while the latter has only three cubital cellules, and the body is not

metallic or blue or green. A. fasciata appears to me to belong to the genus Rhinopsis,

Westw., of which we have one species in our region. Ampulex is found in the Oriental,

Ethiopian, and Neotropical regions ; it preys on species of Blattide.

Jy. Ampulex angusticollis. (Tab. III. figg. 18,2; 134, 3.)

Ampulex angusticollis, Spinola, Ann. Soc. Ent. Fr. x. p. 108 (?)*; Smith, Cat. Hymen. Ins. iv.

p. 271°.

Chlorion angusticolle, Westw. Arc. Ent. ii. p. 66°.

Hab. Costa Rica, Cache (Rogers); Panama, Bugaba, Volcan de Chiriqui 2000 to

3000 feet (Champion).—Gutana, Cayenne 1?3; Brazit, Para 2.

This is a common species in Costa Rica and the State of Panama; it varies greatly

in size.

RHINOPSIS.

Rhinopsis, Westwood, Arc. Ent. ii. p. 68 (1843-1845); Cresson, Trans. Am. Ent. Soc. 1887,

Suppl. part 1, p. 113.

Rhinopsis was founded on a North-American species (2. abbottit), the only one

(unless the European Ampulex fasciata, Jurine, is regarded as belonging to it) hitherto

known. By Cresson the genus is formed into a distinct “family,” separated from the

Sphegide and other Fossores (except the Pemphredonide) by the wings having only

‘two complete cubital cellules”; but that definition would cut off Rhinopsis from

Ampulex, to which it is clearly allied. A better point of distinction between Ampulex

and the other Fossores consists in the first, instead of the second, cubital cellule

receiving the first recurrent nervure. ‘The rostrate clypeus, the large free mandibles,

the elongated prothorax, and the large cubital metathorax, which usually ends in two

teeth laterally, are also characteristic of Ampulex.

38 CL HYMENOPTERA.

~ 1. Bhinopsis maculicornis. (Tab. III. fig. 14, 2 .)

Niger, albo-villosus, scapo medioque antennarum, pedibus apiceque abdominis, rufis; alis hyalinis, fusco-macu-

latis. 9.

Long. 8 millim.

Hab. Mexico, Jalapa (fF. D. G.); Panama, Bugaba (Champion).

Antenne as long as the head and thorax united, thickened towards the apex; the

third joint longer than the fourth and fifth united. Head rugosely punctured, covered

with a short white pubescence, and with a few hairs; clypeus finely punctured, and

covered with long white hair, its apex projecting into a snout and reddish, as are also

the tips of the mandibles; behind, the head is largely developed, rounded, and

narrowed ; the front and vertex are convex, rounded, and without any furrows; the

ocelli are placed opposite the top of the eyes. Prothorax thickly pilose, as long as the

mesothorax, twice longer than broad, narrowed anteriorly; above, towards the apex,

furrowed, the sides in front rising on either side of the furrow into broad tubercles.

Mesonotum hardly so pilose as the prothorax; marked with large, scattered punctures.

Scutellum marked with a few scattered punctures. Metathorax longer than the meso-

thorax; bearing a central and four lateral keels (the central straight, that next to

it curved, converging towards the apex, the second also slightly curved, the others

straight); the space between the keels transversely striolated; in the centre the meta-

notum projects into a blunt tooth truncated at the apex, and laterally bears a sharp

moderately long tooth. The petiole is a little longer than the hind coxe. The apical

abdominal segments are closely covered with a white pubescence. Wings as long as

the thorax, largely suffused with fuscous in the middle; both the recurrent nervures

are received before the middle of the cellules.

Fam. LARRIDA.

I adopt this term in the sense in which it is used by Kohl in his admirable paper,

“Die Gattungen und Arten der Larriden” (Verh. zool.-bot. Ges. Wien, 1884, p. 171).

As there understood, 7rypoxrylon is included in the family, this genus being by most

authors either placed in the Crabronide or made into a distinct family—the “ Trypoxy-

lonide.” If the strict analytical system now so much in vogue is to be followed, the

latter doubtless is the most logical method; but I must confess that I question very

much the utility, to say nothing of a natural arrangement, of forming “ families ” which

can only be separated by one character, and that, moreover, of dubious taxonomical

value.

In truth, the various groups of Sphegide, Larride, Bembicide, &c., can only be

regarded as a complexus of genera equal in value to the Pompilide, Mutillide, and

Formicide; and individually they cannot be considered as standing on the same level

with the latter families, which are much more clearly defined from each other than are

(say) the Larridee from the Bembicide.

PISON.—-TRYPOXYLON. 39

PISON.

Pison, Spinola, Ins. Lig. Spec. Nov. ii. fase. iv. p. 256 (1808).

Tachybulus, Latreille, Gen. Crust. et Ins. iv. p. 75 (1809).

Nephridia, Brullé, Ann. Soc. Ent. Fr. ii. p. 408 (1833).

Pisonitus, Shuckard, Trans. Ent. Soc. Lond. ii. p. 79 (18387).

Pisonoides, Smith, Journ. Proc. Linn. Soc., Zool. ii. p. 104 (1858).

Parapison, Smith, Trans. Ent. Soc. Lond. 1869, p. 298.

Taranga, Kirby, Trans. Ent. Soc. 18838, p. 201.

A genus of wide-world range, and of which nearly sixty species are known. The two

(one doubtful) species recorded from our region belong to Pison “sensu stricto.”

“1. Pison conforme.

Pison conformis, Smith, Trans. Ent. Soc. Lond. 1869, p. 297°.

Hab. Mexico},

/ [2. Pison fasciatum.

Pison fasciatum, Kohl, Verh. zool.-bot. Ges, Wien, 1883, p. 339°.

Hab. “ America,” Mexico aut Peru !.]

TRYPOXYLON.

Trypozylon, Latreille, Préc. Car. gén. Ins. p. 121 (1796); Fabricius, Syst. Piez. p. 180 (1804) ;

Kohl, Verh. zool.-bot. Ges. Wien, 1884, p. 189.

Nearly eighty members of this genus have been described. Trypoxylon is represented

in all the zoological regions, but by far the larger number of known species are from

the Neotropical. They make their nests in twigs or in holes in wood, or form a mud-

nest attached to twigs, and they store their nests with spiders.

Of our species, 7’. albitarse is the only one whose habits have been described.

According to Mr. Peckolt (quoted by Mr. F. Smith, Trans. Ent. Soc. Lond. 1868,

p. 133), it is called in Cantagallo, Brazil, “ Marimbonda da Casa,” or house-wasp, from

its building its nest especially in rooms; but it also builds out of doors on the vines

&c. “It makes a clay-nest in the form of a long cylinder; . . . . there are from four

to six divisions, and in each cell is laid one egg; the cell is filled with some kind of

spider, and hermetically sealed ; and it is curious that precisely the required number of

spiders is stored up, just sufficient to perfect the wasp, since none are ever found after

the insect eats its way out of the earthen cell ” (Smith, loc. cit.).

40 HYMENOPTERA.

A. Metanotum not trisulcate, or with a V-shaped depression, impunctate, and not

striated or furrowed at the base. (Species 1-9.)

i. Large, entirely black species, with black wings, more or less carinate

clypeus, and whitish tarsi.

Si. Trypoxylon albitarse.

Trypoxylon albitarse, Fabr. Syst. Piez. p. 180; Dahlbom, Hymen. Eur. i. p. 286; Lepel. de St.-

Fargeau, Hist. Nat. Ins. Hym. iii. p. 228, t.27.f.3; Saussure, Reise d. Novara, Hymen. p. 76.

Trypoxylon albitarse, var. mexicana, Saussure, loc. cit. p. 72. (Mandibles red.) _

Trypoxylon politus, Say, Bost. Journ. Nat. Hist. i. p. 37°; Complete Writings, il. p. 756.

_ Hab. Nortu America, Indiana 1.—MeExico, Presidio (forrer) ; GuateMALA, El Reposo,

Zapote, San Geronimo, Lanquin, Cubilguitz (Champion); Nicaraeua, Chontales (Belt) ;

Costa Rica, Cache (Rogers); Panama (Boucard).—Sovtu America, Brazil.

A common and widely-distributed species in the New World. ‘The mandibles vary

from black to red, and the pubescence from blackish to dull fulvous on the thorax.

“2, Trypoxylon cinereum. (Tab. IV. figg. 1, 1a; 13,6.

Ss.

Nigrum, cinereo-hirtum, facié et clypeo argenteo-pilosis ; clypeo transverso, non carinato ; metanoto trans-

verse striato; tarsis posticis luteis; alis fuliginosis. ¢ 9.

Long. 15-18 millim.

Hab. Mexico, Presidio (Morrer), Valladolid in Yucatan (Gaumer); GuaTEMALA,

Mirandilla 1700 feet (Champion).

In coloration similar to 7. albitarse, but readily distinguished from it by the clypeus

not being keeled (only projecting roundly at the apex), the body covered with long

cinereous hair, and the front, face, and clypeus bearing a dense silvery pubescence.

Eyes touching the base of the mandibles, the latter piceous towards the middle. Front

and vertex opaque, coriaceous, covered with long hair, which varies in colour from

fuscous to cinereous; a moderately deep suture on the front in the centre. Pro- and

mesothorax covered with shallow punctures ; metanotum closely transversely striated,

except at the base, and (especially at the top) depressed in the centre. The pubescence

on the mesonotum is dull cinereous; that on the pleure is longer and more silvery ;

on the metathorax it is still longer. There is a perpendicular patch of silvery pile

below the tegulz, on either side of the postscutellum, and on the sides of the pro-

notum behind. The abdomen is longer and more slender than in 7. albitarse; the

petiole is more slender, and becomes gradually thickened towards the apex, which is

tumid above ; and the apical segments bear a short sparse pile. The wings are not so

deeply coloured as in 7’. albitarse, and are lighter towards the base and apex. The

pleural suture is deep and wide. The hind tarsi are black at the base and apex. The

legs are more slenderly built than in 7. albitarse, and the hind tibie are not so dilated

at the apex. There is no furrow on the front or vertex; the eyes at the top are

separated by about the length of the third antennal joint.

TRYPOXYLON. | 4h

ii. Medium-sized species, with the wings almost hyaline but fuscous along the costa.

a. Abdomen black, reddish at the base of' the second segment.

Vs, ‘Trypoxylon mexicanum.

Trypoxylon mexicanum, Saussure, Reise d. Novara, Hymen. p. 78, t. 4. figg. 45, 45 6°.

Hab. Mexico, Tampico}, Jalapa!.

“4. Trypoxylon aztecum. (Tab. IV. fig. 2.)

Trypoxylon aztecum, Saussure, Reise d. Novara, Hymen. p. 80°.

Hab. Nortu America, San Lucas in Lower California !.—Mexico, Presidio (Forrer),

Pueblo viejo near Tampico !, Teapa in Tabasco (H. H. Smith), N. Yucatan (Gaumer).

Vv 5. Trypoxylon lactitarse.

Trypoxylon lactitarse, Saussure, Reise d. Novara, Hymen. p. 81". ,

Hab. Muxico, temperate region and eastern cordilleras !.

v 6. Trypoxylon luteitarse.

Trypoxylon luteitarse, Saussure, Reise d. Novara, Hymen. p, B82, t. 4. ARE: 47, 476". con elactat. mem

‘ CAM LA ee " tal haat ae fp

Hab. Mexico, eastern cordilleras 1. Cher” Cane ve are)

V7, Trypoxylon carinifrons.

Nigrum, argenteo-hirtum, basi antennarum, tibiis, tarsis anticis basi abdominisque segmento 2° sordide rufis ;

is fere hyalinis, cellula marginali fumata.

Long. £1 millim.

Hab. Mexico, Atoyac in Vera Cruz (H. H. Smith, May 1888).

The five basal joints of the antenne broadly obscure rufous beneath; the third joint.

fully. one quarter longer than the fourth; the apical joint rufous. Head opaque,

coarsely alutaceous ; eyes at the top separated by nearly the length of the second and

third antennal joints united. An obscure furrow runs down from the ocelli; and

opposite the top of the eye-incision in the middle is a stout transverse keel crossing the

longitudinal furrow. Clypeus broadly carinate. The face, eye-incision, cheeks, and

clypeus densely covered with silvery pile. Thorax shining, minutely but obscurely

punctured; the metanotum obscurely transversely striated; the pronotum, the sides of

the mesonotum, and the greater part of the metanotum densely covered with silvery

hair. Metanotum with a gradual rounded slope; a distinct continuous furrow in the

centre of the apical half. Abdomen petiolated ; nearly twice the length of the thorax ;

the first and second segments shining, obscure pale rufous beneath, but faintly pilose ;

the petiole twice the length of the second segment, dilated at the base, the latter

almost longer than the third; from the third the segments bear a close cinereous pile,

observed as oblique bands. The wings have the apex from the stigma to the end

BIOL. CENTR.-AMER., Hymenopt., Vol. II1., February 1889. ag

49 HYMENOPTERA.

smoky, the band not extending beyond the middle of the cubital cellules. Tegule

fuscous. The anterior legs are all more or less rufous beneath ; the four hind femora

beneath and the calcaria and claws are also rufous.

Characteristic of this species is the short transverse keel in the centre of the front.

8. Trypoxylon fulvispina.

Nigrum, cinereo-pilosum, fronte et vertice rugosis ; geniculis, basi abdominis segmento 2° spinisque, fulvis ;

alis hyalinis, cellula marginali fumata.

Long. 10 millim.

Hab. Mexico, Teapa in Tabasco (H. H. Smith, Feb. 1888).

Antenne subclavate, covered with a dense pale pile; the third joint about one

quarter longer than the fourth. Front and vertex uniformly, coarsely, and rugosely

punctured ; sparsely covered with a fuscous pubescence ; a shallow, but distinct, furrow

runs down from the ocelli; the latter piceous in colour and separated from the eyes

by hardly the length of the second antennal joint. Eyes at the top separated by the

length of the third antennal joint. The front projects in the centre a little above

the antenne. Cheeks, face, and clypeus densely covered with silvery pubescence.

Mandibles reddish, the tips blackish. There is a narrow shallow furrow on the occiput

at the top. Clypeus slightly but broadly projecting, not carinate. Thorax shining ;

covered with shallow, distinctly separated punctures, and clothed with fuscous

pubescence ; the edges of the pronotum, the oblique furrow on the mesopleura, and

the apex and the sides of the metanotum covered densely with silvery pubescence ; the

sternum also bearing silvery pubescence. Metanotum finely transversely striated (indi-

stinctly so at the base), and with a wide hollow in the centre of the apical half, the

hollow having a fine furrow at its bottom. The two basal segments of the abdomen

shining and almost glabrous; the others bearing a scattered short silvery pile, espe-

cially along the sides. Tibize and tarsi densely covered with a short silvery pile; the

spurs fulvous, the claws rufous.

This species comes near to 7’. carinifrons, but may be known from it by the coarsely

rugose head, which wants the transverse keel on the front, the clypeus not carinate, the

punctuation on the thorax covering a wider space, the wings much darker, and with

the stigma dark fuscous, and the entirely black antenne.

b. Abdomen and legs for the greater part fulvous.

.\ 9. Trypoxylon fulvipes. (Tab. IV. fig. 3.)

Nigrum, aureo-hirtum, antennis, abdomine pedibusque fulvis ; alis hyalinis, stigmate testaceo, nervis fuscis. 9.

Long. 12 millim,

Hab. Panama, Bugaba (Champion).

Antenne as Jong as the head and thorax united ; blackish, broadly so beyond the

TRYPOXYLON. 43.

middle, covered with a white pile; the third joint fully one half longer than the fourth,

the last longer than the penultimate. Head covered with golden pubescence, very

densely on the face, clypeus, and éye-incision, sparsely on the vertex; the latter aluta-

ceous, projecting broadly, widely furrowed behind the ocelli, and with a transverse keel

in the middle, it being also keeled in the centre, and almost’ perpendicular below the

transverse keel. Eyes at the top separated by fully the length of the third antennal

joint. Clypeus broadly keeled down the middle, the apex projecting. Mandibles densely

pilose, blackish at the tips. Thorax densely covered all over (except on the centre of

the mesonotum, scutellum, and metanotum) with golden pubescence. Pronotum keeled

in the middle; mesonotum minutely punctured; the metanotum transversely striated,

and with a wide furrow in the apical half. Abdomen about one fourth longer than

the head and thorax united ; the basal three segments blackish at the apex above, and

almost bare, the other segments (especially the apical) covered with golden pubescence.

The legs bear a pale pubescence ; the hind femora are infuscated above.

B. Metanotum broadly and deeply furrowed throughout ; abdomen and legs for the

greater part fulvous. (Species 10.)

V 10. Trypoxylon balteatum. (Tab. IV. figg. 4, 4a.)

Nigrum, aureo-hirtum, basi antennarum late, clypeo, tegulis, abdominis segmentis 1°-3™ pedibusque fulvis ;

alis flavo-hyalinis, nervis testaceis. 9°.

Long. 13 millim.

Hab. Mexico, Atoyac in Vera Cruz (H. H. Smith, May 1888).

Antenne bearing a white microscopic down ; joints 1-4 and part of 5 fulvous; the

third joint nearly twice the length of the fourth. Front and vertex alutaceous and

bearing scattered punctures; the occiput, clypeus, the incision of the eyes, and the

inner orbits thickly covered with golden hair. Ocelli hardly forming a triangle; the

anterior ocellus placed in a hollow and separated from the posterior ones by the curved

posterior margin of this hollow, from which runs a broad and deep furrow down the

front. Eyes above separated by about the length of the second and third antennal

joints united ; below by less than the length of the third. Clypeus slightly concave ;

the apex broadly rounded and projecting, the margin clearly separated. Thorax

shining, impunctate; the pronotum, a stripe along either side of the mesonotum, one

on either side of the postscutellum and down the side of the metanotum thickly covered

with golden hair; the pleure uniformly covered with fulvous hair, which does not

form stripes or patches. Metathorax elongated, narrowed distinctly and gradually

towards the apex; a broad and deep furrow in the centre above, divided into two where

the slope begins; in the lower (and longer) part of the furrow are some transverse

keels. Abdomen shining, impunctate, the apical segments covered with a pale fulvous

down. The petiole has a black stripe above, and is more or less black at the apex

GG 2

44 . ' HYMENOPTERA.

laterally ; the second segment has a broad black stripe on the apical half, and the third

is narrowly black at the apex. The coxe are black at the base; the hind femora are

broadly lined with black above; and the hind tibie are obscurely lined with black

behind.

C. Metanotum usually striated and with a V-shaped excavation on the apical half.

(Species 11-14.)

J 11. Trypoxylon apicipenne. (Tab. IV. fig. 5.)

Nigrum, aureo-hirtum, tegulis, tibiis anticis, medio tarsorum spinisque rufis; metanoto excavato, transverse

striolato; alis fusco-hyalinis, apice fumatis.

Long. 18 millim.

Hab. Mexico, Temax in North Yucatan (Gaumer).

Antenne microscopically pilose and with joints 2-4 rufous beneath; the third joint

one third longer than the fourth. Eyes at the top separated by less than the length

of the third antennal joint ; at the bottom by fully the length of the second and third

joints united. Head to the ocelli closely punctured ; behind them shining and im-

punctate. Vertex raised behind the ocelli and with a.shallow indistinct furrow in the

centre. Ocelli almost in a triangle ; a furrow runsdown from.them. Clypeus broadly

keeled in the centre, the apex projecting, incised in the middle and with a’slighter

incision on either side of the central one. The clypeus, cheeks, and eye-incision

densely covered with silvery pubescence. Thorax shining, finely punctured ; the centre

of the metanotum transversely striolated. The usual stripes on the thorax densely

covered with silvery (slightly inclined to golden) hair. The centre of the metanotum

with a broa V-shaped depression. Abdomen comparatively short, not being very

much longer than the head and thorax united ; the first segment one third longer than

the second, and raised considerably above it at the apex; the segments above on the

sides bear a close fulvous pile, and the apical ventral segments longish fuscous hair.

J 12, ‘Trypoxylon cinereo-hirtum, (Tab. IV. figg. 6, 6a.)

Nigrum, cinereo-hirtum; clypeo carinato, aureo-piloso; fronte coriaceo-punctata; metanoto transverse

striato; basi abdominis segmento 1° medioque tarsorum posticorum luteis; alis fusco-hyalinis, apice

fumatis. 92.

Long. 13 millim.

Hab. Mexico, Vera Cruz, Teapa in Tabasco (Z. H. Smith), Temax in North Yucatan

(Gaumer); GuaTemaLa, Paraiso 300 feet, Guatemala city (Champion).

Front, face, and clypeus covered densely with golden pile; the front and vertex

strongly coriaceously punctured and covered with fuscous hairs; clypeus truncated at

the apex, finely and closely punctured; a shallow indistinct furrow on the front.

Thorax shining, punctured; the metanotum strongly transversely striated, the base

aciculately punctured. The pubescence on the thorax is longish and cinereous; there

TRYPOXYLON. 45

1s a perpendicular silvery stripe down from the tegule, a patch on either side of the

postscutellum, and another on the sides of the middle segment. Middle segment with

a deep V-shaped depression in the centre, extending to the apex. Pleural suture

wide, deep, and oblique. Abdomen shining, covered with silvery and golden pile, which

is especially thick on the sides and bases of the segments. Petiole dilated towards the

apex, the extreme apex, however, being narrowed ; first segment becoming gradually

(but slightly) thickened towards the apex and petioliform, the other segments much

thicker than it and together forming an elongated ovoid. - -

13. Trypoxylon fusciventre,

Nigrum, fylvo-hirsutum, tibiis, medio tarsorum abdomineque testaceis aut fuscis; alis hyalinis, nervis rufo-

testaceis. 9. ;

Long. 13 millim.

Hab. Mxxico, Temax in North Yucatan (Gaumer).

Antenne rufous beneath towards the apex, microscopically pilose; the third joint

about one quarter longer than the fourth. Head coarsely rugose, except behind the

ocelli, where it is only aciculate. Eyes at the top separated by the length of the second

and third antennal joints united, at the bottom by scarcely the. length of the- third.

Ocelli in a triangle ; the vertex slightly depressed in the middle behind them; front

convex, without a furrow. Clypeus projecting at the apex and with a narrow incision

in the middle. Mandibles piceous. Above the antenne and on the clypeus are some

scattered longish silvery-white hairs. Thorax shining, above with shallow punctures ;

the metanotum transversely striated. ‘There is a band of pale hair on the pronotum,

one across the postscutellum, and another on the sides of the metanotum, and the

pleure bear scattered hair. There is a shallow V-shaped depression on the centre of

the metanotum. Abdomen clavate from the third segment; the petiole clavate at the

apex and a little longer than the second segment. The legs are for the greater part

piceous; the three middle joints of the hind tarsi are obscure yellow, and the four

front tarsi obscure testaceous ; the spurs are dark fuscous.

Iam not sure but the piceous colour of the abdomen and legs may be owing to

immaturity, as in one specimen these parts are much darker. |

YW 44. Trypoxylon sonorense, (Tab. IV. fig. 7.)

Nigrum, argenteo-fulvum, punctatum ; apice petioli, abdominis segmento 1° basique 2° rufis; alis fere hya-

linis, apice fumatis; tegulis testaceis.

Long. 13-16 millim. .

Hab. Mexico, Northern Sonora (Morrison).

Face, front, orbits, and clypeus densely covered with silvery pile; clypeus slightly

convex, not carinate, the apex with a slight incision in the centre. Front and vertex

strongly coriaceous, the former with an indistinct furrow in the centre, scarcely

46 . HYMENOPTERA.

depressed. Thorax shining, punctured, but not strongly: the edges of the sutures and

the sides of the middle segment densely fringed with silvery pubescence; the other

parts with a short pale cinereous pubescence. There is a short broad suture on either

side of the mesonotum at the tegule; the pleural suture is oblique and broad; the

middle segment has a wide and deep V-shaped depression in the centre. Abdomen

shining, covered with a short cinereous pile, especially at the apices of the segments ;

petiole thickened and tumid towards the apex, on the top at the apex considerably

higher than the first segment ; first segment petioliform, becoming gradually thickened

towards the apex; the second segment depressed at the base. Coxe, trochanters, tibiz,

and tarsi densely covered with a short pubescence.

The male has the pubescence on the front of the head golden, the mandibles reddish,

and the hind tarsi testaceous in the middle. |

The petiole in some specimens is for the greater part red, in others the base only

is black above.

D. Metanotum furrowed in the middle; hind trochanters with a stout spine.

(Species 15.)

J 15. Trypoxylon spinosum, (Tab. IV. figg. 8, 8a; 84, 3.)

Nigrum, petiolo abdominisque segmento primo rufo-maculatis, medio tarsorum posticorum luteis; facie, clypeo

lineaque mesonoti aureo-hirtis; thorace cinereo et argenteo-piloso ; vertice rugoso ; metanoto excavato,

transverse striato ; trochanteribus posticis spina longa armatis ; alis fusco-maculatis. ¢ 9.

Long. 12-14 millim.

Hab. Mexico, Presidio (forrer).

Head nearly as wide as the thorax; front and vertex convex, not depressed, rugosely

punctured ; a shallow furrow uniting the ocelli; eyes at the top separated by a little

more than the length of the third antennal joint, margined above the incision, the

latter rounded at the end. Clypeus shining, punctured, rather flat, not keeled; a small

rounded incision in the centre, the incision itself having a small thick tubercle in its

middle. Mandibles reddish at the base; finely rugosely punctured. The golden

pubescence is thick and moderately long, and extends from the eye-incision to the apex

of the clypeus. There is a moderately sparse fuscous pubescence on the vertex, and

behind the eyes there isa longer and thicker silvery pubescence. Antenne thick,

black, covered with a cinereous microscopic pile. Prothorax above of equal width, but

in the middle with a slope from the base to the apex above, and without any projecting

angles laterally. Mesonotum shining, closely and somewhat strongly punctured, the

pleure, if anything, more strongly and closely so; the oblique furrow shallow.

Metanotum closely transversely striated; a broad V-shaped depression in the centre.

The pronotum in front, a line along the base of the mesonotum, and the metanotum

(especially at the base and apex) broadly clothed with silvery, inclining to golden, hair ;

the rest of the thorax with short fuscous hair. Abdomen alutaceous, from the second

TRYPOXYLON. 47

segment covered with short fulvous pubescence ; the petiole and second segment almost

glabrous above, the sides with short cinereous pile. Petiole tuberculate laterally near

the base; above with a narrow, shallow furrow, which barely reaches to the middle.

The second segment is raised at the base, of nearly equal width throughout (but, if

anything, thicker towards the apex), and very little longer than the third segment. The

apical segment is broadly keeled in the middle above. Legs densely pruinose; the

anterior and intermediate spurs, and the middle of the intermediate and posterior tarsi

broadly luteous. The hind coxe are large, obliquely keeled and hollow above, and end

laterally in a short blunt tooth ; the spine on the trochanter is rather long, being fully

half the length of the basal joint of the trochanter.

E. Metanotum with a curved furrow on either side of the basal half, and usually

with one down the centre as well, (Species 16-20.)

V 16. Trypoxylon cornigerum.

Nigrum, opacum, punctatum, mandibulis, tibiis tarsisque anticis rufis ; metanoto striolato, bicanaliculato ; alis

hyalinis.

Long. 11-12 millim.

Hab. Mexico, Temax in North Yucatan (Gaumer).

Antenne covered with pale down, the basal three fourths rufous beneath; the third

joint about one fourth longer than the succeeding one. Clypeus thickly, the inner

orbits and the eye-incision sparsely, clothed with silvery pubescence ; the rest of the head

sparsely pilose. Front and vertex opaque, coarsely aciculate. Eyes at the top separated

by a little less than the length of the second and third antennal joints united, below by

about the length of the third. Ocelli in a triangle, the posterior two in a depression.

Front convex, with an indistinct furrow in the centre. Above the antenne is a broad

projection, with a rounded apex. Clypeus sharply projecting at the apex, the apex

rounded, smooth, and shining. Mandibles testaceous. Thorax opaque, alutaceous ;

the sternum sparsely, the sides of the metanotum thickly, covered with silvery-white

hair. Metanotum obliquely striolated; the apex semioblique; a V-shaped furrow in

the middle, the portion of the furrow on the apical oblique part being wider than the

fork; there is also a shallow indistinct furrow down the centre of the basal part.

Abdomen sparsely pilose ; the first segment about one fourth longer than the second.

17. Trypoxylon chichimecum. |

Trypoxylon chichimecum, Saussure, Reise d. Novara, Hymen. p. 83, t. 4. figg. 48, 48 4, c'.

Hab. Mexico !.

This species is stated to occur in elevated districts, in the valley of the city of

Muxico }. |

‘A8 HYMENOPTERA.

; J 18. Trypoxylon toltecum.

Trypoxylon toltecum, Saussure, Reise d. Novara, Hymen. p. 83°.

- Hab. Mexico, Orizaba.}, eastern cordillera !.

J 19. Trypoxylon palliditarse. (Tab. IV. fige. 9, 9a, 3. ) (Wee Seuss) = tebancemar Stienh 1910

Nigrum, nitidum, palpis, geniculis farsioqus anterioribus albis; alis fere hyalinis, nervis nigris. * Camenovn, DS. $897

Long. 11 millim.

Hab. Mexico, Teapa in Tabasco (H. H. Smith, March 1888).

_ Antenne as long as the thorax, thickened towards the apex, the scape obscure

testaceous beneath ; the basal joints of the flagellum fuscous; the third joint, if any-

thing, shorter than the fourth ; the fifth joint curved beneath; the last joint hollowed

and narrowed laterally and as long as the preceding three joints united. Head shining ;

the front rugosely punctured, raised broadly in the middle, narrowed to a broad keel

immediately before the antenne, and with a broad furrow in the centre. Vertex

depressed behind the front ocellus, the latter placed in a hollow. Clypeus projecting

at the apex. The eye-incision, face, cheeks, and clypeus densely covered with silvery

hair. Eyes at the top separated by more than the length of the first and second

antennal joints united. Mandibles reddish at the apical half. ‘Thorax shining, sparsely

punctured above ; the pleure and sternum covered with rather long white hair, finely,

but distinctly punctured. The pronotum transversely furrowed in the middle above,

and there are two shallow furrows on the mesonotum. Metanotum with a wide and

deep central furrow and a curved narrower one on either side, these leading into'a wide

and deep furrow in the apical part. The metapleure are glabrous and slightly concave.

The abdomen is about one half longer than the head and thorax united; shining, pilose

beyond the second segment, densely so at the apex, the latter fuscous above and beneath.

The spurs are all white; the hind tarsi have the base of the first and the greater part

of the second and third joints blackish.

The curved fifth antennal joint and the elongated and hollowed last joint are

characteristic of this species.

V 99, Trypoxylon rugifrons.

Nigrum, subopacum, argenteo-pilosum, vertice et fronte rugosis ; thorace punctato, metanoto striato ; spinis et.

basi tarsorum anterioribus albis ; mandibulis rufis; tegulis albo-testaceis ; alis hyalinis. ¢.

Long. 8 millim.

Hab. Mexico, Vera Cruz (H. H. Smith, Jan. 1888).

Antenne short, subclavate, densely covered with a microscopic down; the third

joint a little longer than the fourth ; the joints not clearly separated. Head opaque;

above the antenne finely rugosely punctured ; the front broadly projecting ; the ocelli

in pits, a broad and shallow furrow leading down to them; the front immediately above

the antenne in the centre projecting into a wedge ; eyes above separated by the length

TRYPOXYLON.—LARRA. 49

of the third and fourth antennal joints united. LEye-incision widening out broadly, so

that its mouth is more than twice the width of the base. Clypeus, face, the head

behind the eyes, and eye-incisions densely covered with silvery pubescence. Clypeus

slightly projecting, the apex rounded. Pro- and mesothorax sparsely and finely

punctured; the mesopleure shining, impunctate. Metanotum obscurely obliquely

striated, the centre raised into a U-form, but with a hollow in the middle; the middle

segment with a sharply oblique slope and furrowed in the centre. The pronotum rises

gradually to a point in the centre. The entire thorax is pubescent; the mesonotum

in front, the mesopleure at the base and apex, and the metapleure and sides of the

metanotum are thickly covered with silvery hair. Abdomen nearly twice the length of

the head and thorax united; the segments not tumid at the apex; the second segment

about one fourth longer than the third, pruinose ; the apical segments covered with a

moderately long pubescence. Legs thickly pruinose; the coxe covered with white

hair.

LARRA.

Larra, Fabricius, Ent. Syst. ii. p. 220 (1793); Kohl, Verh. zool.-bot. Ges. Wien, 1884, p. 65.

Larrada, Smith, Cat. Hymen. Ins. iv. p. 273 (1856); Patton, Proc. Bost. Soc. Nat. Hist. xx.

p. 885 (partim).

I use here the term Zarra as defined by Kohl (loc. cit.). Zarra and Notogonia are

united by Smith, Patton, and others in Larrada; but I agree with Kohl in regarding

them as distinct. Jarra, in fact, may be known from Notogonia by the form of the

prothorax, the mandibles without an inner tooth, the smooth pygidium (not thickly

pilose and ending in bristles), the smooth, shining abdomen, the fore tibize spined on

the outer side, and the absence of a process in the third ventral segment ; and, further,

by the eyes not converging so much at the top, and the shorter clypeus and legs.

Larra has a wide distribution over the globe.

Y 1. Larra godmani. (Tab. IV. fig. 10,2.)

Nigra, nitida, capite thoraceque punctatis; metathorace opaco, rugoso; abdomine rufo; alis fuliginosis. 9.

Long. 16-17 millim.

Hab. Mexico, Orizaba (A. H. Smith & F. D. Godman, Dec. 1887).

Antenne with the scape bare, shining; flagellum opaque, covered with a white

microscopic down; the second joint one half the length of the third, the latter about

one quarter longer than the fourth. Head shining, microscopically pilose, the cheeks

covered with short, white pubescence; punctured distinctly, the punctures clearly

separated. Eyes margined at the top, separated by rather more than the length of the

third antennal joint. Above the ocelli is a wide semicircular depression ; and there is

a wider one, narrowed in the centre, towards the lower ocellus, the latter being rather

indistinct and placed in the middle of the depression ; from this depression a narrow,

BIOL. CENTR.-AMER., Hymenopt., Vol. II., March 1889. HH

o\t

50 HYMENOPTERA.

but deep, furrow runs from the ocellus to the base of the antenne. The centre of the

head is broadly hollowed; and there isa curved and moderately wide furrow on the

inner side of the lateral protuberance. Clypeus broadly rounded, almost transverse in

the centre, shining; the apex flat, not projecting, and almost impunctate. Labrum

broadly projecting and truncated in the middle. Mandibles red, black at the base; the

upper side margined and furrowed close to the lower edge; on the lower side is a wider

furrow, and placed at a greater distance from the edge than the upper one; closely

punctured at the base, and with only a few scattered hairs. Thorax covered with a

short, thick, dark pile, closely and rather strongly punctured; the metathorax rugosely

punctured, the apex with a sharp oblique slope, and irregularly transversely striolated,

and rather thickly covered with moderately long, dark fulvous pubescence. Abdomen

narrow, acute at the apex, longer than the thorax, shining ; fulvous, except for a few

rather long hairs on the ventral surface at the apex; the pygidial area furrowed along

the sides, the furrow not extending to the base, the apical ventral segment also furrowed

laterally and punctured. Legs densely pruinose; the coxz punctured and densely

covered with white hair.

2. Larra rufitarsis. (Tab. IV. fig. 11,¢.)

Nigra, abdomine tarsisque rufis ; alis fusco-hyalinis. ¢.

Long. 11 millim.

Hab. Mexico, Presidio (Forrer).

Antenne microscopically pilose; the third joint about one quarter shorter than the

fourth. Head strongly punctured; the face and clypeus bearing long whitish hair;

eyes at the top separated by the length of the fourth antennal joint. Vertex behind

the ocelli depressed, and with a narrow furrow in the centre ; ocellar area raised, also

furrowed in the middle, and there is a wider, but less distinct, furrow in the centre of

the front. Clypeus broadly projecting, depressed, and rounded at the apex. Mandibles

reddish in the middle. Mesothorax shining, strongly punctured. Metathorax opaque,

narrowed towards the apex, coriaceous. Abdomen shining, black at the base in the

middle; the segments laterally bearing a white silky pile. Legs pruinose ; the spurs

reddish. Second cubital cellule hardly one fourth longer than the third, and nearly |

one half longer than the space bounded by the recurrent nervures, that being less than

the length of the third cubital cellule at the top.

“3, Larra sonorensis.

Nigra, punctata; pleuris opacis, rugosis ; abdomine rufo ; alis fere hyalinis. 9.

Long. 104 millim.

Hab. Mexico, Northern Sonora (Morrison).

Very nearly related to L. rufitarsis, but differing in having the tarsi and spurs black ;

the pleuree opaque, coriaceous; the clypeus more projecting and more abruptly sloped

LARRA.—NOTOGONIA. 51

towards the apex; and the wings more clearly hyaline, with the second cubital cellule

longer compared with the third. The third antennal joint is less than one quarter

shorter than the fourth. The tips of the tarsi are rufous.

NOTOGONIA.

Notogonia, Costa, Ann. Mus. zool. Univ. Napoli, iv. pp. 80, 82 (1868).

Larrada, Smith, Cat. Hymen. Ins. iv. p. 273 (partim).

Larra, Patton, Proc. Bost. Soc. Nat. Hist. xx. p. 385.

This genus appears to be much more numerous in species than Larra and has an

equally wide distribution. The species are very difficult of discrimination, and I have

been compelled to leave over for future study many specimens which no doubt represent

different species from those here enumerated.

V4, Notogonia violaceipennis. (Tab. IV. fig. 12, 2.)

Nigra, opaca; oculis longitudine antennarum articuli tertii distantibus ; abdomine quam thorax breviore ;

alis violaceis.

Long. 18 millim.

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

Eyes separated at the top by scarcely the length of the third antennal joint.

Antenne as long as the thorax, covered with fuscous pile; scape with pedicle as long

as the second and third joints united, finely transversely striated; second joint

considerably narrowed in the basal half, curved, more than one third of the length

of the third joint; the latter dilated at the apex, and a very little longer than the

fourth, which again is a little shorter than the fifth. Head above the antenne finely

shagreened; face and clypeus closely punctured. Clypeus broadly projecting in the

centre; the apex depressed, almost impunctate, and with a row of foveze above the

depressed part; the centre with a very slight incision. Mandibles strongly punctured

at the base, aciculated at the apex. Palpi black, whitish at the apices of the joints,

and covered with whitish hair. Face and clypeus covered with fulvous pile of moderate

length and thickness. Thorax opaque, finely coriaceous, the scutellum very slightly,

the pro- and metathorax more strongly than the mesothorax. Anterior part of the

pronotum broadly raised, and with two elongated fovee on the top; in length fully

three fourths as long as the posterior part (counting to the elongated apex), A

depression separates the anterior and posterior portions of the pronotum, the whole

being not much shorter than the head; the anterior part bears a longish dark fulvous

pile, and the posterior part is silvery-sericeous; and the propleura at its point of junction

bears a fringe of fulvous hairs. Meso- and metathorax opaque, scarcely pilose, except

on the sternum and on the apex of the metanotum. Mesonotum but slightly convex

in front, and not depressed in the middle; metanotum with a furrow down its entire

length (except at the top of the apex), the apex oblique (but not sharply), and having

HH 2 .

52, _ HYMENOPTERA.

the furrow deeper than on the basal part, as well as a few coarse striations on the

edges. The depression on the mesopleure below the wings is wide and deep.

Abdomen shining; above with a sparse silvery pubescence at the apices of the

segments; beneath with a few, rather long, black hairs. Pygidium coarsely and _

strongly punctured, and bearing a silvery pile and stout fulvous bristles; the apex

rounded, beneath shining, covered with large scattered punctures, the base impunctate

and almost transverse. Penultimate segment on the lower side sparsely punctured.

Legs covered with a dull sericeous pile, pale at the base, fulvous to blackish or fuscous

at the apex of the tibie and at the base of the tarsi. "Wings deeply violaceous, of a

slightly lighter tint at the apex. Recurrent nervures united; second cubital cellule

at the top about three fourths of the length of the third cellule at the top, and less

than the distance bounded by the first recurrent and first transverse cubital nervures,

the latter sharply angled above the middle, the upper portion being straight.

J 2. Notogonia montezuma.

Nigra, opaca; oculis longitudine antennarum articuli secundi distantibus ; alis fusco-violaceis.

Long. 17 millim.

Hab. Mexico, Northern Sonora (Morrison).

Antenne stout, scarcely the length of the thorax, covered with a close whitish pile ;

first joint (with pedicle) nearly as long as the second and third joints united, not much

dilated on the lower side; second joint nearly half the length of the third, not much

dilated at the apex; third joint, if anything, longer than the fourth. yes at the top

separated by less than the length of the third antennal joint. Head opaque; front,

face, and clypeus covered with a moderately long pile, the pile silvery on the front

and inclining to fulvous or brownish on the clypeus, it being especially long at the

sides of the latter. Clypeus broadly rounded, closely and rather strongly punctured ;

a broad, not clearly separated, keel down the centre; its apex with a narrow incision.

Mandibles strongly striated at the base, aciculated at the middle, and bearing a few

longish hairs on the lower side, the median teeth sharply pointed. Thorax bearing a

short fuscous pile; finely and very closely punctured, the pleure and metathorax more

strongly than the mesothorax. Prothorax covered with a silvery pile; the fore part

depressed, not raised at the apex, and sunk well into the head, and situated at a much

lower level than the posterior portion. Mesonotum shining above; the pleure and

metathorax opaque, much more strongly coriaceous. Furrow on the mesopleure

narrow, reaching beyond the middle. Metanotum with a shallow depression in the

centre; middle segment deeply channelled, except at the top, where a triangular

raised part runs into the channel, and, as well as the metanotum, bearing a close whitish

pile. Abdomen sericeous, especially at the apices of the segments. Pygidium closely

rugose, covered with a dull pile and with fulvous bristles; the apex truncated ; beneath,

as also the penultimate segment, sparsely punctured, the other ventral segments trans-

. NOTOGONIA. | 53

versely aciculated. Legs densely pruinose; the brush on the metatarsus and claws

reddish-fulvous. Recurrent nervures very nearly united; the second cubital cellule at

the top scarcely half the length of the third at the top, and less than the distance

bounded by the first transverse cubital and recurrent nervures, the former curved at

the top half. |

Apart from the difference in the form of the prothorax, this is a smaller species than

N. violaceipennis. It has the mandibles striolated (not rugose) at the base, and their

median teeth sharply pointed (not rounded). The pile on the face is paler; the fovee

on the clypeus are absent, or, at any rate, are very indistinct and confused; the furrow

on the mesopleure is longer and narrower; the abdomen is more densely sericeous

throughout; the pygidium is rounded at the apex; the ventral surface is very distinctly

aciculated (which is not the case in WV. violaceipennis) ; and the wings are not violaceous,

and have the first transverse cubital nervure curved at the top.

V 3. Notogonia championi.

Nigra ; abdomine quam thorax longiore; alis violaceis, apice fuscis.

Long. 17 millim.

Hab. Guatemata, Paraiso 300 feet (Champion).

Antenne longer than the head and thorax united, covered densely with a silky pile,

especially towards the base; the first joint a little longer than the second and third

joints united, narrowed at the base, which does not project close to the pedicle, the

lower side not carinate; second joint scarcely contracted at the base, about one fourth

the length of the third, the latter becoming gradually (but slightly) thickened towards

the apex, and distinctly thinner and longer than the fourth. Head opaque; the vertex

bearing a fuscous, the cheeks, front, and face a silvery, and the clypeus a longer and

thicker fulvous, pubescence. Clypeus punctured, rounded, the apex with a narrow

incision: the centre at the base keeled. Mandibles with the apical half piceous, the

base finely rugose. ‘The depression on the vertex is broader than long, the bottom

forming a raised triangle; the furrow leading from the ocellus is narrow; the central

depression on the front is deep, and is clearly separated from the furrow leading

down to the antenne. The eyes at the top are separated by the length of the third

antennal joint. Thorax semiopaque, aciculate; the mesonotum neither depressed at

the centre nor at the sides; scutellum shining, impunctate; postscutellum aciculate ;

metanotum opaque, alutaceous, the centre slightly depressed, and with a keel down the

basal half, the middle segment semioblique, furrowed down the centre. The furrow on

the mesopleure extends a little beyond the middle. The prothorax in front, the edges

of the tubercles, and the sides of the metanotum and the middle segment bear a short

silvery pile; the sternum has a fulvous pubescence. Abdomen elongated, nearly as

long as the head and thorax united, narrow, the apex acute, the segments at their point

of junction silvery; the pygidium punctured, the apex rounded, the pubescence and

54 HYMENOPTERA.

bristles dull fulvous, the apical two segments punctured. Legs densely pruinose; the

metatarsal brush dull fulvous. The second cubital cellule at the top is about two

thirds of the length of the third, and less than the distance bounded by the first

transverse cubital and first recurrent nervures; the recurrent nervures are separated.

Differs from NV. violaceipennis by the body being narrower, especially the abdomen,

the latter also more sericeous, and having the pygidium longer, narrower, and rounded

at the apex; the scutellum impunctate, and not furrowed in the centre; the meso-

notum not depressed; the antennze somewhat shorter; the clypeus densely covered

with a fulvous pubescence and incised at the apex; and, more particularly, by the

elongate second joint of the antenne, this joint being nearly half the length of the

third.

4. Notogonia truncata. <= ” as

Nigra, opaca; oculis in vertice fere dupla longitudine antennarum articuli secundi inter se distantibus; alis

fusco-violaceis.

Long. 14 millim.

Hab. Costa Rica, Cache (Rogers).

Antenne about the length of the head and thorax united, the flagellum almost

glabrous, the scape sparsely pilose; the first joint, if anything, shorter than the second

and third joints united, the lower side bluntly keeled, the base narrowed, the extreme

base scarcely projecting; the second joint about one third of the length of the third,

and incised at the base on the lower side; the third and fourth joints subequal.

Head opaque, the vertex sparsely covered with fuscous pubescence, the cheeks and

front with a silvery pile, the clypeus with moderately long fulvous pubescence. The

depression on the vertex is longer than broad, deep; the furrow below the ocellus wide,

twice as long as broad; frontal depression large, deep; the furrow above the antenne

wide, shallow. Clypeus with the extreme apex shining, impunctate, the middle with

a small, but distinct, semicircular notch, above this impunctate; edge opaque, coarsely

punctured, and bearing on the lower side some elongated fovee; the centre is broadly

and indistinctly keeled. Mandibles striated at the base. ‘Thorax opaque, alutaceous,

the metanotum finely coriaceous; mesonotum truncated in front, not depressed in the

centre nor at the sides. Scutellum shining, obsoletely punctured ; the furrow on the

mesopleure scarcely extending to the middle; metanotum with a shallow, not very

distinct, furrow in the middle, the apex oblique, and with a narrow, but deep, furrow

in the centre, the furrow commencing a little above the middle. ‘The pubescence is

fuscous and close; on the apex of the metanotum it inclines to fulvous. Abdomen

scarcely twice the length of the metathorax; the segments with a silky pile at their

point of junction; the pile on the apical segments fulvous; pygidium short, broad,

truncated at the apex, the sides projecting, the top bearing long fuscous bristles, as

well as a stiff pubescence; the apical two segments with scattered punctures. Legs

NOTOGONIA. 55

pruinose, golden-fulvous at the apex of the hind tibie and at the‘base of the tarsi ;

hind tibiz broadly dilated at the base.

The male, or what I suppose to be such, has the second antennal joint half the length

of the third, and curved on the lower side ; the eyes separated at the top by more than

the length of the third antennal joint; and the front tooth on the middle of the

mandibles reduced to a mere stump.

V 5. Notogonia argentifrons.

Nigra, dense argenteo-pilosa ; oculis fere dupla longitudine antennarum articuli secundi distantibus; alis

hyalinis, apice fusco.

Long. 16-millim.

Hab. Guaremata, Pantaleon 1700 feet (Champion).

Antenne of moderate stoutness, microscopically pilose ; first joint sharply keeled on

the lower side, narrowed towards the base and apex, and as long as the second and

third joints united; second joint narrowed at the base, about one fourth of the length

‘of the third, the latter a little longer than the fourth. Head finely and closely, the

clypeus much more strongly, punctured; apex of the latter projecting, shining,

impunctate, and with a slight notch in the centre, the middle with a flat, broad,

indistinctly defined keel. Mandibles at the base longitudinally punctured, and densely

covered with a piceous-silvery pile; the other part shining, impunctate, and glabrous.

The front, face, cheeks, and clypeus densely covered with silvery pubescence, as are also

the lower part of the occiput and the under part of the head. Thorax opaque, very finely

punctured; the sides of the apex of the metanotum with a few stout strie. Prothorax

almost entirely covered by the head above; the pronotum saddle-shaped. Mesonotum

with a shallow, broad furrow in the middle in front. Metanotum with a furrow down

its centre, the furrow becoming slightly broader towards the apex; metapleure oblique

and broadly depressed in the centre, and finely obliquely striated ; middle segment

with a deep furrow down its centre, and having a sharply oblique slope. Abdomen

with some bluish tints; the segments at their apices with a silvery pubescence ; the

penultimate segment with a golden-fulvous pile. Pygidium apparently longitudinally

punctured, densely covered with golden-fulvous or copper-silvery bristle-like hair; the

apex truncated, but with a tooth-like projection at either side ; the bristles pale, broad.

The ventral surface of the last segment has a distinct curve, and is punctured, as is

also the penultimate segment; the other ventral segments are aciculated, fulvous at

the apex. Legs pruinose; the brush on the spur and metatarsus deep reddish-

fulvous. Recurrent nervures almost united; second cubital cellule at the top one

fourth of the length of the third at the top, and about one half the length of the space

bounded by the first transverse cubital and recurrent nervures.

This species may be known from NV. montezuma by being smaller and more slenderly

built; the head and thorax bearing a thick silvery pubescence; the basal half of the

56 HYMENOPTERA.

mandibles densely covered with a silvery pile; the antenne more slender, their scape

longer in proportion to the following two joints, and distinctly keeled beneath; the

metathorax striated laterally, and the middle segment also bearing some stout striations ;

and the wings much lighter-coloured, not violaceous throughout.

6. Notogonia tinctipennis.

Nigra; oculis dimidia longitudine antennarum articuli 3! distantibus; alis famato-hyalinis, apice late fusco-

fumatis.

Long. 13 millim,

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Antenne pruinose, longer than the head and thorax united; the basal joint a little

longer than the second and third joints united, carinated beneath, the base contracted

on the lower side into a curve, the extreme base not projecting; second joint curved

and narrowed at the base beneath, about one third of the length of the third, the latter

almost as long as the fourth. Head covered with a silvery pile, which is very dense on

the clypeus and cheeks. Eyes at the top separated by one and a half times the length

of the second antennal joint. The depression on the vertex oval; the furrow below the

ocellus about three times longer than broad; the frontal depression with a keel in the

centre. Clypeus rounded, not incised, the apex shining, impunctate. Mandibles at

the base finely rugose, the apex piceous. Thorax covered with a sericeous pile, the pile

dense on the sternum and middle segment ; pro- and mesothorax aciculate ; metanotum

finely coriaceous, furrowed down the basal three fourths, the middle segment oblique,

furrowed ; scutellum shining, impunctate. Abdomen a little shorter than the thorax,

sericeous. Pygidium coriaceous, the pile and bristles blackish, the apex rounded; the

apical two ventral segments punctured. Legs densely pruinose. The second cubital

cellule at the top the length of the space bounded by the first transverse cubital and

_ first recurrent nervures.

A smaller species than WV. argentifrons. The latter has the clypeus incised, the front

not keeled; the middle segment striolated; the wings hyaline; the eyes at the top

separated by nearly twice the length of the third antennal joint, &c.

J 7. Notogonia beata. (Tab. IV. fig. 13, 3.)

Nigra, argenteo-pubescens; clypeo facieque longe cinereo-hirtis; area pygidiali truncata, pube cinerea

obtecta; oculis in vertice longitudine antennarvm articuli secundi et tertii inter se distantibus; alis

violaceo-hyalinis, apice fumatis.

Long. 12 millim.

Hab. Muxico, Orizaba (H. H. Smith & F. D. Godman, Dec. 1887).

Antenne stout, covered with a pale microscopic down; the first joint not much

longer than the second and third joints united; the third and fourth joints subequal.

Clypeus and cheeks densely covered with a silvery, the front and vertex with a short

fuscous, pubescence. Eyes at the top separated by nearly the length of the second and

NOTOGONIA. 57

third antennal joints united. Head opaque, closely punctured; the clypeus at the

apex shining, depressed, slightly punctured and rounded, not incised. Thorax opaque,

closely punctured, densely covered with a close, short, pale pubescence. Metathorax

transversely punctured; the apex irregularly transversely striolated, semiperpendicular.

Abdomen short, ovate, sericeous at the junction of the segments; pygidial area broadly

truncated at the apex, punctured, and densely covered with silvery-white depressed

hairs beneath, shining and impunctate in the middle above, the sides closely punctured

and distinctly separated from the central shining part. Legs densely pruinose; the

bristles, spines, and calcaria black; the claws reddish at the apex. Wings fusco-

hyaline, the apex of a much deeper smoky tint; the second cubital cellule at the top

not half the length of the third at the top; the recurrent nervures separated by nearly

the length of the top of the second cubital cellule; appendicular cellule completely

traced.

8. Notogonia chrysura. (Tab. IV. fig. 14,3.) = an genticacda

Nigra, argenteo-pilosa; oculis in vertice longitudine antennarum articuli tertii inter se distantibus; area

pygidiali pube aurea obtecta; alis fere hyalinis, apice fumatis.

Long. 12°5 millim.

Hab. Mexico, Presidio (Forrer).

Antenne microscopically pilose, the first joint longer than the second and third joints

united, hollowed externally above, dilated towards the middle ; the second joint about one

half the length of the third, the latter almost as long as the fourth. Head opaque, finely

coriaceous; the clypeus finely punctured; the vertex sparsely clothed with cinereous

hair, the clypeus, cheeks, and sides of the front densely covered with cinereous pubes-

cence; the depression on the vertex round, deep, shining in the centre; the furrow

below the ocellus dilated towards the apex ; the central depression on the front elongated,

deep, the furrow leading to the antenne indistinct. Clypeus with a narrow keel in the

centre, the apex rounded. Eyes above separated by almost the length of the third

antennal joint. Thorax finely rugose; the metathorax finely coriaceous, widely fur-

rowed down the centre of the metanotum, the apex irregularly transversely striolated,

its furrow deep; scutellum punctured, obscurely furrowed down the middle; meso-

pleural furrow narrow, almost complete. Mesonotum broadly, but not deeply, fur-

rowed in the middle; there is a shallow depression on the side at the’ tegula, and

there is a short deep furrow in front of this depression. Abdomen shorter and narrower

than the thorax, the segments at their junction sericeous, the apical one fulvous; —

pygidium broad, short, densely covered with fulvous-golden bristles and hair; the

ultimate and penultimate ventral segments shining, the latter with a thick tuft of

bristle-like hair on either side, there being a similar tuft, but shorter, on the preceding

segment. Legs slightly pruinose, the metatarsal brush and the tarsal and tibial spines

fulvous. | |

BIOL. CENTR.-AMER., Hymenopt., Vol. II., March 1889. II

J 58 HYMENOPTERA.

9. Notogonia argenticauda. (Tab. IV. fig. 15, 3.)

Nigra, facie apiceque metanoti longe argenteo-pilosis ; area pygidiali pube argentea obtecta ; oculis in vertice

longitudine antennarum articulorum secundi et tertii inter se distantibus; alis fere hyalinis.

Long. fere 13 millim.

Hab. Mexico, Vera Cruz (H. FH. Smith).

Antenne stout, as long as the thorax; the joints gradually dilated towards the

middle; the first joint longer than the second and third joints united ; the second joint

about three fourths of the length of the third, the latter shorter than the fourth.

Head semi-shining, strongly aciculate, the clypeus and face covered with short silvery

hair. Eyes at the top separated by the length of the second and third antennal joints

united. Clypeus broadly projecting in the middle and rounded at the apex, scarcely

keeled in the centre. Mandibles without teeth on the inner side. Thorax closely

covered with down, which varies in colour from silvery to fulvous; alutaceous, the

metathorax much more coarsely so; the apex of the latter hardly punctured, densely

clothed with hair laterally, and deeply furrowed in the centre.. Abdomen elongate-

ovate, densely and broadly sericeous at the junction of the segments, but not in the

centre. Pygidial area bluntly truncated at the apex, covered with silvery hair; beneath

shining, slightly punctured. The ventral surface bears a rufous down, and on the apex

of the second segment is a tuft of long rufous hair. Legs pruinose, the spines and

spurs black. Wings smoky-hyaline, from the base of. the radial cellule fuscous; the

second and third cubital cellules at the top subequal; the recurrent nervures separated

by the length of the second cubital cellule at the top; appendicular cellule complete.

V 10. Notogonia apicipennis. (Tab. IV. figg. 16,9; 164,32.)

Nigra; area pygidiali pube cinerea obtecta; oculis in vertice longitudine antennarum articuli tertii inter se

distantibus ; alis flavis, apice fere fumatis.

Long. (3) 10 millim.; (2) 12-13 millim.

Hab. Panama (Boucard).

Antenne as long as the head and thorax united, rather densely microscopically

pilose; first joint distinctly longer than the second and third joints united, not carinate

beneath ; second joint becoming gradually, but slightly, thickened towards the apex

and fully half the length of the third, the latter equal in length to the fourth. Head

minutely punctured; clypeus broadly rounded at the apex, scarcely projecting. Man-

dibles densely pilose at the base, the middle piceous, glabrous, impunctate. Front, face,

cheeks, and clypeus (except at the apex) densely covered with a close fulvous, mixed

with silvery, pubescence. Eyes separated at the top by the length of the third antennal

joint. Thorax opaque, minutely rugose ; a thick edging of fulvous hair along the sides

of the meso- and metanotum, and on the greater part of the apex of the latter; meta-

notum finely rugose, scarcely furrowed in the centre, the middle segment semiperpen-

dicular and deeply, but not widely, furrowed in the centre. Abdomen narrower than,

NOTOGONIA.—TACHYTES. 59

and nearly as long as, the thorax, the apex acuminate, the segments broadly pilose at

their apices. Pygidium elongated, the apex rounded, densely covered (except upon an

elongated cone-shaped space at the base) with a fulvous pile, impunctate; beneath, and

the penultimate segment also, with scattered punctures. Legs pruinose, the hair on

* the spur and metatarsus reddish-fulvous.

Nou. Notogonia panamensis., (Tab. IV. fig. 17, 3.)

Nigra, cinereo-pubescens; facie apiceque metanoti argenteo-pilosis; area pygidiali pube fulva obtecta; oculis

in vertice fere longitudine antennarum articuli tertii inter se distantibus; alis flavo-hyalinis, apice fere

fumatis.

Long. 10 millim.

Hab. Pawama, Bugaba, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Antenne almost bare; the basal joint somewhat longer than the second and third

joints united; the second joint one third the length of the third, the latter, if any-

thing, longer than the fourth. Vertex and front but very slightly pilose; the face and

clypeus covered with golden or silvery hair. Eyes at the top separated by the length

of the third antennal joint. Front moderately depressed; an indistinct furrow above

and a very distinct and broad one below the ocellus, and there is a longish furrow

which commences a little below the latter and reaches to the antenne. Clypeus

rounded at the apex, shining and impunctate there, and with a small incision in the

middle. Mandibles rufous towards the centre, the central furrow deep. Thorax opaque,

alutaceous, sparsely covered with a short pale pile, the pile more distinct on the meta-

thorax, especially on either side of the metanotum, where it assumes a fulvous hue.

Mesonotum slightly depressed in front; metanotum finely coriaceous, narrowly furrowed

down the middle, the apex oblique ‘and with the furrow wider and deeper. Abdomen,

if anything, longer than the thorax, elongate, narrowed gradually towards the apex,

the latter bearing a silvery or fulvous pile, opaque, almost alutaceous. Pygidial area

with the bristles dark fulvous and intersected with silvery hairs; the apical bristles

stout, dull fulvous. Beneath and at the base the apical segment is sparsely punctured ;

the penultimate ventral segment is also sparsely punctured, and the middle segments

bear a silvery soft pubescence. Legs pruinose; the spines and spurs black, the meta-

tarsal brush fulvous. Third cubital cellule hardly extending beyond the apex of the

radial cellule; the second cellule at the top is as wide there as the third; the

recurrent nervures are united.

TACHYTES.

Tachytes, Panzer, Krit. Revis. ii. p. 129 (1806); Kohl, Verz. zool.-bot. Ges. Wien, 1884, p. 101.

Lyrops, Uliger, in Ross. Faun. Etrusc. 2nd edit. ii. p. 161 (1807).

Tachyptera, Dahlbom, Hymen. Eur. i. p. 183.

Tachytes is readily known from Larra and Notogonia by the head being flat along

W 2

60 - HYMENOPTER }.

the inner side of the eyes, and not raised into more or less blunt ridges. The meta-

thorax is usually shorter, or, at least, hardly longer, than the mesothorax, and rounded

at the apex; the body is hairy and bee-like; and the apex. of the radial cellule is

rounded. Nearly 150 species of Tachytes (and Tachysphex) have been described from

all the zoological regions; and sixteen are known from North, and twenty-four from

South America.

/ 1. Tachytes yucatanensis. (Tab. IV. fig. 18, 2.) Ag a ows

Niger; tibiis tarsisque ferrugineis; alis fulvo-fumatis. 9. .

Long. 17-18 millim.

Hab. Mexico, Temax in North Yucatan (Gaumer).

Antenne sparsely microscopically pilose, the scape bearing long white hairs; the

third joint about one quarter longer than the fourth. Head below the ocelli covered

thickly with rather long fulvous hair, the front, vertex, and occiput more sparsely with

fuscous, intermixed with pale, hair. Eyes at the top separated by about the length of

the second and third antennal joints united; ocelli surrounded by a distinct margin and

by a furrow on the outer side of the latter. Vertex and front opaque, closely punc-

tured. Clypeus closely punctured; the apex broadly rounded, slightly projecting.

Mandibles at the base reddish and closely covered with short fulvous hair ; palpi rufous.

Thorax opaque, closely and rather strongly punctured; the pronotum above and the

pleuree and sternum bearing pale golden hair, the sides of the mesonotum thickly

covered with fulvous hair; the rest of the mesonotum and metanotum with long pale

fuscous hair. There is an elongated fovea in the centre of the metanotum at the apex.

Abdomen as long as, or a little longer than, the thorax, shining, aciculate ; the sides of

the basal three segments bearing a silvery pile. Pygidial area with a distinct lateral

margin, rather sharply rounded at the apex, and covered thickly with deep coppery-

golden pile; apical ventral segment at the apex bearing some large coarse punctures

and some long hairs; the penultimate segment also punctured at the apex and bearing

some long rufous hairs ; the ventral segments pale at the apices. Legs bearing a golden

or silvery pile, the spines and spurs rufous; the tarsal spines paler than the tibie; the

hind tibiee broadly blackish in the middle; the claws blackish. The second cubital

cellule at the top is a little shorter than the third, and somewhat longer than the space

bounded by the two recurrent nervures.

Vv 2. Tachytes guatemalensis. (Tab. IV. fig. 19.) - ovr? |

Niger, fusco-hirtus ; alis fere hyalinis, antice fulvo-fumatis. 9°.

Long. 16 millim.

Hab. Guatemata, Mirandilla 1700 feet (Champion).

Antenne not much longer than the pro- and mesothorax united, thick, the flagellum

TACHYTES., 61

microscopically pilose, the first joint sparsely covered with long fulvous hair; first joint

considerably narrowed at the base, as long as the second and third joints united; second

joint a little more than one third the length of the third, and half the length of the

fourth. Head opaque, minutely punctured, the cheeks and clypeus covered with long

fulvous-golden hair, the rest of the head more sparsely clothed with pale fulvous hair.

Clypeus distinctly punctured, the apex entire, broadly rounded. Base of the mandibles

apparently striated, densely covered with obscure golden pile; the middle bears some

rather long reddish hair and a few large punctures; the apex piceous-red. ‘Thorax

opaque, minutely punctured, the punctures distinctly separated, covered with a fulvous

pubescence, which is especially long on the sternum. Metanotum with a gradual

rounded slope, impunctate (or the punctures only visible under a high power), an

elongated fovea at the apex in the middle; the apex keeled down the centre, rounded,

oblique. Abdomen as long as the thorax, strongly aciculated; the basal ventral seg-

ments aciculated, almost impunctate in the middle, the penultimate and the apical

half of the last punctured, the latter strongly. Pygidial area roughly longitudinally

striated, and covered with fiery-red bristly pubescence; the apex sharply rounded, the

keels raised, especially towards the apex.

V 3, Tachytes andreniformis. (Tab. IV. fig. 20.)

Niger, fulvo-hirtus, abdominis segmentis cinereo-pilosis; alis fere hyalinis.

Long. 13 millim.

Hab. Mexico, Vera Cruz (H. H. Smith, Jan. 1888).

Antenne filiform, longer than the head and thorax united, sparsely microscopically

pilose ; the basal joint covered with long fulvous hair, scarcely so long as the second and

third joints united; the second joint scarcely half the length of the third, the latter a

little longer than the fourth. Face, clypeus (except at the apex), and cheeks bearing

long fulvous hair, the hair hiding the surface; the vertex more sparsely clothed with

long fulvous hair, opaque, closely punctured. yes distinctly converging at the top,

where they are separated by a little more than the length of the third antennal joint.

There is a triangular depression above the ocelli, and the latter are situated on an

elevation; an indistinct furrow runs down from them. Apex of the clypeus projecting

in the middle, the projection rounded and with a slight waved incision on either side

of it. Mandibles closely rugosely punctured at the base, reddish towards the middle.

Thorax opaque, the scutellum distinctly punctured, covered with long fuscous hair and

more densely along the sides of the mesonotum with fulvous hair; on the pleure the

hair is sparser. Abdomen sparsely covered with fuscous hair, the segments bearing a

fringe of cinereous hair, which is almost interrupted in the centre. The ventral seg-

ments bear at their junction a few long fulvous hairs. Pygidial area broad, the apex

broadly rounded and whitish ; the surface with black, mixed with rufous, hairs. Apical

ventral segment punctured. Coxe, trochanters, and femora covered with fuscous, the

62 HYMENOPTERA.

anterior femora with fulvous, hair; tibiee densely pruinose, the spines and spurs rufous ;

tarsi with the spines pale rufous.

4, Tachytes argentipes. mae Gut pee eg gees

Niger ; facie, clypeo thoraceque dense fulvo-argenteo-pilosis ; pedibus argenteo-pilosis ; alis hyalinis.

Long. 18 millim.

Hab. Panama, Bugaba (Champion).

Antennal scape covered with long pale fulvous hair; the flagellum almost glabrous,

but pruinose under a strong lens; the third joint not much longer than the fourth.

Head opaque, alutaceous; the clypeus, face, cheeks, and front covered densely with

fulvous hair, which has a slight silvery, or even golden, tinge; the vertex and upper part

of the front much more sparsely covered with long black or fulvous-black hair. Vertex

depressed in the centre, the depression broadest at the apex; there is a wide furrow

above the ocellus. The eyes at the top are separated at the narrowest part by a little

more than the length of the second and third antennal joints united. Clypeus rounded,

margined at the apex. Mandibles bearing long golden-fulvous hairs on the basal half,

the apical half reddish, with a black stripe down the middle. Thorax alutaceous, the

mesonotum finely punctured; the sternum, the lower and front part of the pleure,

and the metapleure densely covered with fulvous hair; the pronotum sparsely covered

with long pale hair; the mesonotum and middle segment with fuscous hair. Abdomen

nearly as long as the head and thorax united, and almost narrower at its widest part

than the latter, becoming gradually narrowed from the base of the second segment.

The petiole bears long fuscous hair; the sides of the second and following segments,

and the three apical segments above, densely covered with moderately long fulvous hair.

Pygidial area densely covered with black (having in certain lights a fulvous tinge)

bristle-like depressed stiff pile, and with a few long black hairs; the apex rounded,

without hair or bristles; beneath, the central part is impunctate, laterally bearing

scattered punctures. ‘The other ventral segments have also scattered punctures and are

pale at the apex. Legs closely covered with silvery pile, the pile especially bright and

thick on the outer side of the tibie; the spurs and tarsal spines are bright fulvous;

behind, the hind tibie bear three rows of thick spines, but only the hinder row is

complete; there are only two incomplete rows of spines on the middle pair, and in

front there are a few long flexible fulvous spines.

5. Tachytes ornatipes, (Tab. IV. fig. 21.)

Niger; mandibulis tarsisque rufis; facie metapleurisque longe argenteo-pilosis; area pygidiali pube aurea

obtecta; alis clare hyalinis. .

Long. 10 millim.

Hab. GuaTeMALA, Paso Antonio 400 feet (Champion).

Antenne stout, microscopically pilose ; the first joint with a rather long fringe of

TACHYTES. 63

silvery hair on the lower side, the sides also with a silvery pile, the top almost glabrous ;

first joint a little longer than the second and third joints united, the second half the

length of the third. Head large, and wider than the thorax, finely and closely punc-

tured, opaque; the front, cheeks, face, and clypeus, and behind the lower part of the

eyes, covered with a close, moderately long, silvery pubescence; the vertex covered with

long fuscous hair. Clypeus transverse; mandibles reddish, shining, impunctate, the

extreme base covered with silvery pubescence, the other part with a few scattered hairs.

Hyes large, converging at the top, where they are separated by about the length of the

third antennal joint. Above, and touching the lower ocellus, is a shining impunctate

circle, and from the ocellus runs a shallow shining furrow. Thorax opaque, minutely

and closely punctured; the pronotum, the sides and the middle segment of the meta-

notum covered with rather long silvery hair; the rest of the thorax with a dull silvery

pile. Metanotum with a distinct furrow, which ends in a pear-shaped hollow, the

middle segment with a wider furrow. Abdomen aciculated, the segments with a broad

band of silvery hair at their apices, the other parts of them with a shorter pile. Pygi-

dium covered with a dense golden-fulvous stiff pile and with a few longish hairs; the

apex rounded. ‘The ventral segments are pale at the edges, where there is a fringe of

fulvous pile, aciculated, and with some scattered punctures; the extreme apex bears

rather long fulvous hair. Legs covered with a short dense silvery pile ; the tibial spines

are pale, the hair-fringe on the spurs and metatarsus fulvous, the spurs being pale

fulvous.

6. Tachytes ferrugineipes. (Tab. IV. fig. 22, 3.) (reece

Niger ; pedibus rufis; capite thoraceque longe fulvo-pilosis; alis hyalinis, basi fere flavo-hyalinis. ¢.

Long. 13 millim.

Hab. Panama (Boucard).

Antenne shorter than the thorax; the scape covered with long pale fulvous hair;

the flagellum with a microscopic pile; the third joint nearly one quarter longer than

the fourth. Head from below the ocellus densely covered with long fulvous hair, the

hair hiding the surface completely ; the vertex alutaceous, opaque, densely covered with

fuscous hair, and depressed in the centre. yes at the top separated by a little more

than the length of the third antennal joint. Apex of the clypeus rather sharply

rounded, slightly projecting. Basal half of the mandibles ferruginous. Thorax covered

all over with rather long fulvous hair, but more sparsely so on the mesonotum, the

latter alutaceous and minutely punctured. Tegule reddish. Abdomen elongate, covered

with a short, dense, pale pile; the segments at the apex fringed broadly with pale

fulvous hair. Legs covered with a pale pile; the anterior and intermediate femora are

black to near the apex, the posterior pair broadly so at the base.

64 HYMENOPTERA.

TACHYSPHEX.

Tachysphex, Kohl, Deutsche ent. Zeitschr. xxvii. p. 166 ;. Verh. zool.-bot. Ges. Wien, 1884, p. 347.

This genus is separated from Tachytes, auct., by Kohl, and seems to represent a well-

defined group. Tachysphex is distinguished from Tachytes by the naked pygidial area,

the metatarsal brush of the fore tibie formed of very long flexible bristles, and the form

of the body not quite so bee-like. It contains numerous species, and is found in most

of the warm and temperate regions of the globe.

V 1. Tachysphex psilocerus,

Tachysphex psilocerus, Kohl, Verh. zool.-bot. Ges. Wien, 1883, p. 374°.

Hab. Muxico, Chapultepec (Bilimek 1).

VA 2. Tachysphex rufo-maculatus. (Tab. IV. fig. 23, 2 .)

Niger, fulvo et cinereo-pilosus; femoribus (basi nigra), tibiis, tarsis abdominisque segmentis 2° et 3° rufis; alis

hyalinis.

Long. 113 millim.

Hab. Mexico, Atoyac in Vera Cruz (Schumann).

Antenne sparsely microscopically pilose, the scape covered with pale hair, the third

and fourth joints subequal. Head opaque, alutaceous; the front and vertex covered

with fuscous hair, the cheeks, face, and clypeus with fulvous, mixed with silvery, hair.

Eyes at the top separated by nearly the length of the second and third antennal joints

united. Ocellar area raised, furrowed down the centre. Apex of the clypeus projecting

in the middle, shining, marked with punctures. Mesothorax shining, rather strongly

punctured; the metathorax opaque, coarsely aciculate. The pleure are covered with

rather long pale silvery hair; the pronotum and the sides of the mesonotum with pale

fulvous, and the rest of the thorax with fuscous, hair. The fovea at the apex of the

metanotum is pear-shaped. Abdomen somewhat shorter than the thorax, shining,

hardly punctured, and bearing a silvery pile; black, the base and apex of the petiole,

the greater part of the second and third segments, and the apical half of the other

segments, rufous. Pygidial area broad, bare, coarsely punctured, the apex red and

broadly rounded. Legs bearing a silvery pubescence, the spines clear white, the spurs

pale red. Wings:—the costa and stigma are obscure testaceous, the nervures at the

base are fuscous, at the apex blackish; the second and third cubital cellules at the top

are subequal and a little longer than the space enclosed by the recurrent nervures; the

latter are received in front of the middle of the cellule, and the other nervures are

irregular.

ASTATA, 65

ASTATA.

Astatus, Latreille, Précis des caract. gén. des Ins. p- 114 (1796).

Astata, Latreille, Hist. Nat. des Crust. et des Ins. xiii. p. 297 (1805).

Of this genus upwards of forty species are known, from all the zoological regions.

a. Abdomen black.

Vy. Astata albovillosa. (Tab. V. fig. 3, 2.)

Nigra, longe albo-hirta, punctata ; segmento mediali striolato ; alis fusco-violaceis, nervis nigris. °.

Long. 16-17 millim.

Hab. Guatemaa, San Gerénimo (Champion).

Basal joint of the antenne strongly punctured, covered with long greyish hairs ; the

third joint one and three quarter times longer than the fourth, slightly curved, and

gradually thickened towards the apex. Head shining, covered with long greyish hair,

in front rounded, bulging out in the middle, closely covered with shallow punctures,

which are much fewer in number on the vertex. Clypeus with the apex in the middle

almost transverse, slightly projecting. Mandibles (especially on the basal half) bearing

large punctures, and with rather long brownish hairs. Eyes at the top separated by

about the length of the fourth and fifth antennal joints united. Thorax shining, punc-

tured, but not strongly, the basal half of the scutellum almost entirely impunctate, the

median segment longitudinally striolated; the hair on the top is fuscous, on the pleure

and sternum it is longer and cinereous. Median segment with a gradual slope; the

scutellum with a furrow in the centre. Abdemen nearly as long as the meso- and

metathorax united, shining, with some punctures; the base, the sides, and ventral

surface sparsely covered with pale hairs; the penultimate dorsal segment is pale at the

apex, and bears there a fringe of fuscous hair. Pygidial area a little longer than the

width of the base, glabrous, rugosely punctured; the sides raised and spinose-haired

throughout; the apex rounded, reddish. Penultimate segment incised at the apex

and depressed in the middle. Coxz and trochanters thickly, and the femora more

sparsely, covered with long grey hair, the tibie and tarsi thickly spinose; the spines

on the hind tarsi and the claws more or less rufous. Radial cellule a little shorter

than the second and third cubital cellules united, its apical nervure curved; the first

cubital nervure is shorter than the second, which is more than twice the length of the

third ; the second cubital nervure at the top is one fourth shorter than the space

bounded by the recurrent nervures.

of 2. Astata strigosa.

Astatus strigosus, Kohl, Verh. zool.-bot. Ges. Wien, xxxviii. p. 147°.

Hab, Mexico, Orizaba (Bilimek1); Costa Rica, Cache (Rogers).

As I am not quite sure about the identity of the Costa-Rican specimen with Kohl’s

species, I give a description of it :—

- BIOL. CENTR.-AMER., Hymenopt., Vol. I1., March 1890. KK

MW. Ba

66 HYMENOPTERA.

Antenne thick, sparsely haired, the third joint more than one half longer than the

fourth. Head shining, punctured, the punctures clearly separated ; the face and cheeks

sparsely covered with long white hair. Clypeus truncated at the apex, projecting.

Mandibles indistinctly punctured, an obtuse short thick tooth below the apex, covered

with long hair, the hair inclining to fulvous on the lower side. Thorax shining, above

almost glabrous; the sides and sternum covered with long white woolly hair; pronotum

closely transversely punctured; mesonotum obscurely pitted with indistinct, widely

separated punctures; scuteilum almost impunctate; mesopleure (especially in front)

distinctly punctured ; median segment longitudinally striolated (but with the striole

diverging towards the apex); the pleure obliquely, the oblique apex rugosely, punc-

tured, and with a pear-shaped, shining, impunctate depression in the centre, the apex

sparsely haired. Abdomen shining, impunctate, glabrous; pygidium opaque, finely

and closely granulate-punctate; the sides distinctly keeled, the keels raised above the

central portion, which is very slightly convex; the extreme apex rufous. Legs shining,

the coxee, trochanters, and femora covered with long white woolly hair; the tibize

sparsely and stoutly spined, pruinose on the outer side; the tarsi inclining to piceous.

Wings deep violaceous; the first recurrent nervure received a little beyond the middle

of the cellule; second cubital cellule considerably narrowed at the top, which is not

much more than half the distance bounded by the second recurrent and the second

transverse cubital cellule ; nervures deep black.

Length 11-12 millim.

The colour of the body is a very deep black, inclining to plumbeous. At the top, the

eyes are separated by a little more than the length of the third antennal joint. The

pronotum has the part next the head rising obliquely but not abruptly, and thence

rises gradually to the apex, being but slightly convex in the centre; the apex is raised,

distinctly separated by the hollow thus formed from the mesonotum, there being also a

distinct margin on it in front of the latter.

Besides being considerably smaller, A. strigosa differs from A. albovillosa in the hair

being sparser; the depression at the base of the clypeus deeper ; the head not projecting

so much in the centre in front and less punctured; the mesonotum scarcely punctured ;

the scutellum not furrowed in the middle; the pygidial area longer, being fully one

and a half times the width of the base in length; the apex of the dorsal penultimate

segment without a distinct fringe of hairs; the penultimate ventral segment not

incised, &c.

/ 3. Astata apicipennis. (Tab. V. fig. 1.)

Nigra; capite punctato, pleuris segmento medianeque rugoso-reticulatis, dense fusco-pilosis; alis hyalinis,

apice fumatis, nervis pallidis.

Long. 12 millim.

Hab. Mexico, Presidio (orrer).

ASTATA., ‘67

Antenne as long as the thorax; the base sparsely pilose; the third joint curved,

longer than the fourth. Head shining, somewhat strongly punctured; the face and

front bearing rather long pale fuscous hair; the vertex sparsely and microscopically

pilose. Mandibles with some large irregular punctures towards the apex, and hollowed

in the centre there, and, except at the extreme tip, reddish. Clypeus rounded, the

apex margined; the centre slightly incised; the base depressed ; the sides semiopaque,

closely punctured ; the central part shining, sparsely covered with large punctures.

Prothorax closely punctured; mesonotum shining, the sides punctured, the centre

almost impunctate. Scutellum strongly punctured round the edges, the centre only

sparsely punctate. Mesopleure rugosely reticulated; sternum strongly punctured ;

metapleure obliquely striolated ; median segment rugosely reticulated, the apex rugose.

Abdomen shining, almost impunctate. Pygidial area opaque, finely rugose, almost

glabrous, margined at the sides ; a few stout bristles issue from the edges near the apex.

Femora bearing black hair, the tibie and tarsi stiffly spinose; the apices of the tarsi_

(especially of the anterior pair) reddish. Radial cellule scarcely so long as the second

and third cubital cellules united; the radial nervure at its apex turned sharply back-

wards towards the stigma; the second cubital cellule one half longer than the third,

and scarcely so long as the first at the bottom, at the top shorter than the space

bounded by the recurrent nervures. Tegule brownish.

V 4, Astata tinctipennis.

Nigra, longe albo-hirta; capite (vertice excepto) punctato; pleuris rugoso-punctatis; segmento mediali

reticulato ; mesonoto cum scutello nitidis, levis; alis hyalinis, apice fusco-tinctis. 9.

Long. 9 millim.

Hab. Mexico, Presidio (Forrer).

_ Antenne as long as the thorax, bearing a microscopic down ; the third joint nearly

one fourth longer than the following one. Face, front, cheeks, and occiput bearing

long cinereous hair, and strongly punctured to the ocelli; the vertex behind them

being shining, and with only a few scattered punctures. Clypeus rounded, the apex

projecting, only slightly shining in the middle, the sides more opaque, and closely

punctured. Mesonotum and scutellum shining, punctured, the former posteriorly and

the scutellum but sparsely so. Pleure and sternum rugosely punctured; median

segment reticulated, the apex with an oblique slope, rugose. Except on the scutellum

and mesonotum, the thorax is covered with moderately long white hair. Abdomen

not much longer than the mesothorax, shining, impunctate. Pygidial area closely

punctured; the sides raised and bearing throughout a fringe of stout bristles; the

centre is for the greater part reddish. Femora sparsely haired ; tibiz and tarsi thickly

spinose. Radial cellule shorter than the second and third cubital cellules united, the

apex bent sharply backwards; the third cubital cellule at the bottom is as long as the

space bounded by the first recurrent nervure and the second transverse cubital nervure ;

KK 2

68: HYMENOPTERA.

the second cubital cellule at the top is half the length of the space bounded by the

recurrent nervures. | .

Not unlike A. apicipennis, but smaller, and easily known from it by the thorax and

head being densely clothed with long hair; the much more strongly rugose pleure and

median segment ; the shorter abdomen ; and the pygidial area much more clearly raised

at the edges, and furrowed on the inner side of them, the edges, moreover, being spinose

throughout. The first cubital cellule is clearly longer than the second.

b. Abdomen red.

JJ 5. Astata kohli. (Tab. V. fig. 2, head from in front; 2:a@, antenna.)

Nigra, nitida, segmento medial? opaco; abdomine rufo; alis fumatis, basi fere hyalinis. 2.

Long. fere 8 millim.

Hab. Mexico, Ventanas in Durango 2000 feet (Forrer).

Head almost transverse, distinctly broader than the thorax, rather strongly, but

sparsely, punctured on the top; the face and vertex closely and rugosely punctured,

almost opaque; clypeus shining, sparsely punctured. yes slightly converging towards

the top; ocelli in a triangle. Clypeus projecting in the middle, and with three short,

stout teeth there, broadly and roundly carinate down the centre. Mandibles broadly

red before the apex. Antenne stout; the third joint one fourth longer than the

succeeding. Pro- and mesonotum shining, covered with large scattered punctures, the

mesonotum with two indistinct fine furrows in the centre towards the apex, the space

bounded by these being depressed ;. pleure rugose, opaque; sternum shining, sparsely

punctered. Median segment opaque,. finely rugose, the apex oblique and coarsely

transversely rugose. Abdomen a little shorter than the thorax, shining, sparsely haired.

Pygidial area shining, finely aciculate, indistinctly margined laterally, the apex rounded.

Appendicular cellule longer than the radial, which is not much longer than the

second and. third cubital cellules united; the second cubital cellule at the top and

bottom is wider than the third, and at the top is narrower than the space bounded

by the recurrent nervures, which are received near the apical and basal fourth of the

cellule; the second transverse cubital nervure is straight, the first is slightly bent, the

third is broadly curved outwardly. Legs: the cox and femora bearing black hair;

the tibiee and tarsi moderately spinose..

~\6. Astata picta.

Astatus pictus, Kohl, Verh.. zool.-bot.. Ges. Wien,, xxxviii. p. 146°.

Hab. Muxtco (Bilimek 3).

_ Alhed to A. kohli, bat easily known from it by the clypeus only projecting (not

toothed) in the middle.

ASTATA. | 69

7. Astata mexicana. |

Astata mexicana, Cresson, Proc. Ent. section Ac. Phil. in Trans. Am. Ent. Soc. ix. p. v'.

Hab. Mexico (Sumichrast 1).

J 8. Astata alpestris. (Tab. V. figg. 4; 4a, head from in front; 44, antenna.)

Nigra, abdomine rufo; sparse punctata, longe albo-villosa; segmento mediali striolato; alis hyalinis, apice

fumatis. 9°.

Long. 84 millim.

Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith).

Antenne stout, densely covered with a close white microscopic pile, the third joint

not much longer than the fourth. Head broad, sharply retreating behind the eyes;

the face and oral region covered with long pale hair, the occiput and vertex with more

scattered and shorter hair; the face and front closely and rather strongly punctured,

the vertex more sparsely, the punctures on the latter being much more widely separated,

and almost absent behind the ocelli. Eyes very slightly converging on the top; ocelli

hardly forming a triangle, the anterior ocellus in a pit, the posterior ocelli separated

from each other by a greater distance than they are from the eyes. Clypeus rounded

in the middle at the apex. Mandibles piceous at the apex. The sides of the pronotum

coarsely rugose; mesonotum very shining, sparsely and finely punctured, the pleura

strongly punctured; scutellum with very few punctures. Median segment striolated,

the striole running into reticulations; the apex with an oblique slope, transversely

rugosely punctured; metapleure obliquely striolated. The sides of the thorax bear

long white hairs. Abdomen black at the extreme base, finely aciculate. Legs stout;

the tibize (especially the two hinder pairs) strongly and stoutly spinose; the tarsi also

strongly spinose, rufous towards the apex. Radial cellule short, the appendicular

cellule nearly as long as it, and oblique at the apex; the second cubital cellule very

narrow at the top, not half the length of the space bounded by the recurrent nervures,

the latter being almost the length of the third cubital cellule above.

[Kohl (Verh. zool.-bot. Ges. Wien, xxxiv. p. 447) gives A. cewrulea, Cresson, as from

Mexico, no other locality being given; but Cresson himself (Proc. Ent. section Ac.

Phil. in Trans. Am. Ent. Soc. ix. p, iv) gives Nevada-as the habitat. ]

Fam. NYSSONIDA.

I use this term merely for convenience, and not that I consider the group of Mysson

and its allies to form a family of equal taxonomic value with, say, the Pompilide or

Mutillide. |

As the admirable Monograph of Handlirsch (Sitz. der k. Akad. der Wissensch.

Wien, 1887 e¢ seg.) is indispensable to every student of these insects, I have followed

his arrangement of the genera.

70 HYMENOPTERA.

BOTHYNOSTETHUS.

Bothynostethus, Kohl, Verh. zool.-bot. Ges. Wien, xxxiil. p. 344 (1884), & xxxiv. p. 449; Handlirsch,

Sitz. der k. Akad. der Wissensch. Wien, xcevi. p. 221.

A distinct genus not closely related to any other yet described. ‘Two species are

known. |

JJ 1. Bothynostethus saussurei.

Bothynostethus saussurei, Kohl, Verh. zool.-bot. Ges. Wien, XXXill. p. 346, t. 18. figg. 5,6°; Hand.

Sitz. der k. Akad. der Wissensch. Wien, xcvi. p. 224, t. 1. figg. 1, 2.

Hab. Mexico, Huastec!.

ALYSON.

Alyson, Jurine, Nouv. méthode de class. les Hymén. p. 195 (1807); Handlirsch, Sitz. der k. Akad.

der Wissensch. Wien, xcvi. p. 235.

A well-known genus of small extent, but of wide range.

Vy. Alyson melleus.

Alyson melleus, Say, Bost. Journ. Nat. Hist. i. p. 380+; Complete Writings, i. p. 762; Packard,

Proc. Ent. Soc. Phil. vi. p. 4227; Handl. Sitz. der k. Akad. der Wissensch. Wien, xcvi.

p. 253°; Cresson, Trans, Am. Ent. Soc. 1887, Suppl. p. 280.

Hab. Norta America! ?%, New Jersey, Indiana, Illinois, Virginia, Texas.— Nortu-

west Mexico ®.

_ NYSSON.

Nysson, Latreille, Hist. Nat. des Crust. et des Ins. iii. p. 340 (1802); Handlirsch, Sitz. der k.

Akad. der Wissensch. Wien, xcv. p. 281 (1887).

Paranysson, Guérin, in Cuvier’s Icon. Régn. Anim. p. 441; Cresson, Trans. Am. Ent. Soc. ix.

p. 273.

Acanthostethus, Smith, Trans. Ent. Soc. Lond. 1869, p. 306.

Hyponysson, Cresson, Trans. Am. Ent. Soc. ix. p. 273.

This genus is cosmopolitan, and found in all parts of the world. Nearly seventy species

are known, of these twenty-one are from North America or Mexico, and eight from

South America.

i. Posterior tibie serrate; lateral margin of the scutellum strongly reflexed ; post-

scutellum bilobed ; apex of the abdomen generally with four teeth. (Paranysson.)

1. Nysson mexicanus.

Nysson (Paranysson) mexicanus, Cresson, Trans. Am. Ent. Soc. ix. p. 275".

Nysson mexicanus, Handl. Sitz. der k. Akad. der Wissensch. Wien, xcv. p. 303.

Hab. Mexico (Sumichrast 1).

NYSSON.—GORYTES. 71

J, Nysson dives.

Nysson dives, Handl. Sitz. der k. Akad. der Wissensch. Wien, xcv. p. 309, t. 4. figg. 8, 24’.

Hab. Mexico, Orizaba!.

ii. Posterior tibie not serrate; lateral margin of the scutellum not reflexed ; post-

scutellum narrow, not bilobed ; apex of the abdomen (3) with not more than two

spines. (Nysson.)

3. Nysson zapotecus.

Nysson zapotecus, Cresson, Trans. Am. Ent. Soe. ix. p. 280'; Handl. Sitz. der k. Akad. der Wissensch.

Wien, xcv. p. 360.

Hab. Mexico (Sumichrast 1).

f 4. Nysson aztecus.

Nysson aztecus, Cresson, Trans. Am, Ent. Soc. ix. p. 279’; Handl. Sitz. der k. Akad. der Wissensch.

Wien, xcv. p. 361.

Hab. Mxxico (Sumichrast ').

GORYTES.

Gorytes, Latreille, Hist. Nat. des Crust. et des Ins. xi. p. 808 (1805) ; Handlirsch, Sitz. der

k. Akad. der Wissensch. Wien, xcvii. p. 316 (1888).

Gorytes has been divided into many “genera”—Harpactus, Hoplisus, Lestiphorus,

Euspongus, &c.; but, as Handlirsch has shown, the characters upon which they are

grounded merge completely the one into the other, so that most of them can hardly be

even used for divisional purposes. The Central-American species, with the exception

of G. dipunctatus, which, as regards the neuration of the hind wings, is a Hoplisus, all

belong to Gorytes, Cresson, that is, they have the median nerve received beyond the

posterior transverse nervure.

In the excellent Monograph of Handlirsch, 121 species are described from all parts

of the world. I have followed here, as closely as possible, his arrangement of the

species.

i. Median nervure of the hind wing received considerably before the posterior transverse

nervure; both the recurrent nervures interstitial. (Euspongus, Cress.) |

1. Gorytes bipunctatus. (Tab. V. figg. 11; 11a, head from in front; 114,

antenna.)

Gorytes bipunctatus, Say, in Long’s Second Expedition, p. 338° ; Complete Writings, i. p. 228 ;

Handl. Sitz. der k. Akad. der Wissensch. Wien, xcvii. p. 355 ’.

Lestiphorus bipunctatus, Dahlb. Hymen. Europ. i. p. 157.

Euspongus bipunctatus, Dahlb. Hymen. Europ. i. p. 480; Cresson, Trans. Am. Ent. Soc. 1887, Suppl.

p. 280°.

72 HYMENOPTERA.

Hab. Nortu America, Pennsylvania !23, Georgia 2, Tennessee ®, South Carolina ?.—

Mexico 2, Presidio (Forrer), Temax in Northern Yucatan (Gaumer).

2. Gorytes championi.

Nigro-eneus, nitidus, levis, vix punctulatus ; scapo antennarum subtus, clypeo, basis mandibularum, margine

pronoti, scutello, metanoto, abdominis maculis duabus, tibiis tarsisque anterioribus, basi tibiarum posti-

carum medioque tarsorum posticis, albis ; alis hyalinis, Segmento mediali nitido, non striolato.

Long. 64 millim.

Hab. GuatEMALA, San Geronimo (Champion).

Basal joint of the antenne curved, a little longer than the third and fourth joints

united, the third and fourth subequal ; the flagellum thickened gradually to the apex,

the joints each a little longer than broad, brownish beneath. Head margined behind

the eyes, not much developed, and retreating ; front and vertex with short, the clypeus

densely covered with a longer, silvery-white pubescence; palpi white; eyes large,

strongly faceted, reaching to the base of the mandibles, converging beneath; hinder

ocelli separated from each other by nearly twice the distance they are from the eyes ;

a narrow furrow runs from the ocelli to the antenne, which are inserted considerably

above the base of the clypeus; the latter is convex, broadly rounded at the apex.

Thorax shining, rather closelyecovered with whitish pubescence ; the median segment

with long soft white hair; median segment impunctate; the dorsal area clearly

limited, but neither punctured nor striolated; mesopleure punctured ; the mesosternal

furrow obsolete. Abdomen shining, impunctate, a little longer than the thorax; the

petiole longer than the second segment, the apical half widely dilated, beneath obscure

brownish-white; the second segment with a white line on either side above ; apical

segment short, broad, rather strongly punctured. Legs densely covered with white

pile; the tips of the intermediate tarsi blackish; the hind tarsi black, except the

greater part of joints 2 and 3; tibie sparsely spined.

G. championi differs from G. bipunctatus and its allies in having the median segment

not striolated at the base and not punctured. In G. championi the head and thorax

(especially the mesonotum) have a much more violaceous tint than the abdomen; the

second cubital cellule is, at the bottom, shorter than the third; the first recurrent

nervure is received before the transverse cubital, the second is interstitial.

ii. Median nervure of the hind wing received beyond the posterior transverse nervure,

or interstitial ; the recurrent nervures not interstitial.

A. Eyes not converging beneath ; median segment usually punctured, its base with a

more or less triangular striolated area.

J 8. Gorytes fuscus. (Tab. V. fig. 10.) —

? Gorytes vespoides, Smith, Ann. & Mag. Nat. Hist. (4) xii. p. 407°.

GORYTES. 73

Hoplisus fuscus, Taschenberg, Zeitschr. f. Naturw. xlv. p. 368’.

Gorytes fuscus, Handl. Sitz. der k. Akad. der Wissensch. Wien, xcvii. p. 377°.

Hab. Norta America, Connecticut »X—Mexico, Cordova’, Orizaba®, Temax in

Northern Yucatan (Gaumer); GuatemaLa, San Joaquin in Vera Paz (Champion),—

Amazons, Ega!; Brazin, Rio Janeiro ?.

4, Gorytes robustus.

Gorytes robustus, Handl. Sitz. der k. Akad. der Wissensch, Wien, xcvii. p. 380°.

Hab. Mexico, Tampico !.—Sovutu America, Brazil}.

Vs, Gorytes cayennensis.

Hoplisus cayennensis, Spinola, Ann. Soc. Ent. Fr. x. p. 116°.

Gorytes cayennensis, Handl. Sitz. der k. Akad. der Wissensch. Wien, xcvii. p. 385 *.

Gorytes sericatus, Smith, Cat. Hym. Ins. iv. p. 363°.

Hoplisus anthracipennellus, Taschenberg, Zeitschr. f. Naturw. xlv. p. 366%.

Hab. Muxico, Orizaba (Bilimek 2), Cordova (Saussure *).—Souta America, Colombia? *

Cayenne }, Brazil 34.

J 6. Gorytes maculipennis. (Tab. V. figg. 12; 12a, head from in front ; 12 b,

antenna. )

Niger, nitidus; thorace superne sparse punctato ; scapo antennarum, margine clypei, orbitis oculorum, margine

pronoti, scutello, fascia metanoti, maculis 2 in segmento mediali, tegulis fasciisque 4 abdominis, flavis ;

alis fere hyalinis, fasciis 3 fuscis.

Long. 7 millim.

Hab. Panama, Bugaba (Champion).

Antenne stout, subclavate ; the scape elongate, narrow, yellow beneath ; the basal

three-fourths of the flagellum brownish beneath ; the third joint distinctly longer than

the fourth. Head not much broader than the thorax, shining, impunctate, covered

with a close fuscous pile; the clypeus with silvery hair; eyes almost parallel ; hinder

ocelli separated by a little more than the distance which separates them from the eyes ;

front not depressed, and without keel or furrow beyond a very thin indistinct furrow

over the antenne; clypeus short, broadly rounded, depressed at the base, fringed all

round with silvery hair; mandibles piceous, blackish at the tips. Thorax above

sparsely covered with a fuscous pile, the metapleure and sternum with a thicker and

longer dull silvery pile, shining; the mesonotum and apex of the median segment

covered with shallow punctures; the median area in the middle extends to near the

centre of the median segment; the twelve keels gradually decrease from the centre to

the sides, and are not distinctly bordered; the middle furrow is narrow, but distinct —

and continuous; mesosternal furrow narrow, but distinct. Abdomen a little longer

and narrower than the thorax; the petiole and first segment impunctate; the other

BIOL. CENTR.-AMER., Hymenopt., Vol. II., March 1890. LL

74 HYMENOPTERA.

segments not so shining, almost alutaceous, and punctured; pygidial area keeled

laterally, bluntly acute at the apex, bearing deep elongated punctures, and sparsely

pilose. Ventral segments with scattered punctures; the last strongly and closely punc-

tured, rufous, black at the extreme base. Legs sparsely pilose; black behind ; the

tibie lined with yellow in front; the femora (the posterior pair narrowly) dull rufous

in front; the tarsi reddish-testaceous; the tibial and tarsal spines and calcaria pale.

The clypeus, a line along the inner orbits of the eyes (extending to about three-

fourths of the length of the eye), the pronotum, tubercles, a larger spot behind them,

scutellum and postscutellum, two large ovate spots on the middle segment, the tegule,

the tubercles and a mark behind them, and the edges of the abdominal segments,

yellow; the base and sides of the petiole rufous. Wings clear hyaline ; the radial

cellule entirely, a spot at the apex of the subcostal cellule touching the costa, a small

cloud in the apex of the first cubital cellule, and the top of the second cubital cellule,

blackish ; stigma rufo-testaceous ; nervures blackish ; cubitus very faint beyond the

third cubital cellule. ‘Tibiz spinose, the spines pale; the fore tarsi with the brush

rather long.

VY 7. Gorytes punctifrons. (Tab. V. figg. 13, head from in front; 13a, antenna.)

Niger, punctatus ; segmento mediali rugoso-punctato; ore, orbitis oculorum, scapo subtus, margine pronoti,

tegulis, fascia scutelli, tibiis tarsisque anterioribus, marginibus abdominis segmentis, flavis ; alis hyalinis,

fascia substigmatali fusca. 9.

Long. fere 6 millim.

Hab. Mexico, Presidio (Forrer).

Antenne covered with a close pale pubescence; the scape yellow; the flagellum

brownish beneath; the third joint about one quarter longer than the fourth ; the basal

joint a little longer than the third and fourth united ; the joints projecting beneath ; the

ninth with a blunt projecting point at the apex. Head sparsely covered with a fuscous

pile, the clypeus with silvery-white hair; shining; the front and vertex bearing rather

long widely-separated punctures; a wide, but not very deep, furrow below the ocelli;

there is a sharp keel above the antennew. Clypeus waved in the middle, the edges with

a thick tuft of hair; palpi testaceous, blackish at the base. Eyes large, very slightly

converging beneath. The clypeus, the mandibles (except at the tips, which are fuscous),

and the inner orbits of the eyes to near the top, broadly yellow. Thorax clothed with

a short, close, pale pile, longest on the breast; bearing large, distinctly separated

punctures, which are larger on the middle segment; metapleure shining, almost

impunctate, broadly hollowed ; base of the median segment in the middle longitudinally

striolated, the striolated part being margined and produced to a point in the centre;

the edge of the pronotum, the tubercles, a larger mark behind, the tegule and the

scutellum, clear yellow; the centre of the posterior region of the middle segment is

hollow and keeled, the keel striolated on either side. Abdomen as long as, but

narrower than, the thorax, shining, punctured, the punctures becoming closer and

GORYTES. 7d

smaller towards the apex; covered (very closely and thickly on the apical segments)

with a grey pubescence; all the segments above broadly banded with yellow; the

second segment evidently longer than the first, becoming gradually dilated from the

base to the apex; pygidial area triangular, rugosely punctured; the first ventral

segment bearing large deep punctures, the other segments finely and irregularly punc-

tured. Legs pilose; the knees, the anterior and intermediate tarsi, their tibie in

front, the posterior tarsi (except at the apex), the anterior and intermediate tibie

behind (except a black line in the middle), the hinder tibie at the base, and the

spurs, yellow, the hinder spurs inclining to rufous. The wings are clear hyaline; the

cloud occupies the radial cellule (except a small space at the extreme base), the second

cubital cellule (except a narrow band on the lower side), the third cubital cellule

(except an oblique triangular part on the lower anterior side), and the space in the

discoidal cellule bounded by the recurrent nervures; first and second cubital nervures

equally converging above, making the second cubital cellule above less than the space

bounded by the two recurrent nervures; cubitus obsolete beyond the third cellule.

The mesosternal carina is broad, distinct; there is a moderately broad, semi-oblique,

deep furrow at the base of the metapleura. The tibial spines are almost obsolete.

The affinities of this species are clearly with G. hamatus, Handl. from Colorado.

The latter, however, differs from G. punctifrons in having the scape “ short and broad ”;

the basal joints of the flagellum oblique at the apex, the last joint incised, and the

apical five not so perceptibly thickened ; the ocelli separated by a greater distance

from the eyes than they are from one another (the opposite being the case in G. pune-

tifrons, in which they can hardly be said to form even a “ stumpfwinkeligen Dreiecke,”

the anterior being but a very short distance in front of the posterior ocelli); the wings

smoky (clear hyaline in G. punctifrons); the fascia on the pronotum interrupted

(continuous in G. punctifrons); the scutellum with two marks, and the flagellum

entirely, black. G. hamatus is also 2 millim. longer than G. punctifrons.

J 8. Gorytes fasciatipennis. (Tab. V. figg. 14; 14a, head from in front; 14 6,

antenna.) |

Niger, nitidus, sparse punctatus; orbitis oculorum, margine pronoti, scutello, maculis 2 parvis in segmento

mediali fasciisque abdominis duabus, flavis ; alis fumato-hyalinis, anticis fuscis, stigmate ochreo. 2.

Long. fere 7 millim.

Hab. Mexico, Temax in North Yucatan (Gaumer).

Antenne short, stout, yellow beneath, the flagellum thickened towards the apex; the

yellow on the flagellum passing into rufous; the third joint nearly one quarter longer

than the fourth, the basal joint longer than the third. Head shining, rather densely,

but shortly pilose; almost impunctate, the clypeus with a row of punctures on the

projecting middle part; front and vertex almost convex, the former slightly hollowed

over the antenne, without furrows or keels; eyes almost parallel; the hinder ocelli

LL 2

76 HYMENOPTERA.

separated by a somewhat greater distance from each other than they are from the eye,

and by a greater distance from the eyes than they are from the front ocellus ; clypeus

transversely convex in the middle, the apex scarcely waved in the centre. Thorax

shining, the mesonotum, scutellum, and median segment with scattered, moderately

large punctures; mesopleure impunctate, rather densely pilose, the keel distinct; the

ten keels on the median segment stout, rather widely separated, indistinctly margined ;

the apex of the median segment with a slight slope, keeled down the centre, and with

oblique keels running from the central keel near the end. Abdomen with the apical

half acutely pointed ; the basal two segments shining, impunctate, almost glabrous ;

the other segments closely and rather coarsely punctured and pilose; the pygidial area

bearing large oblong punctures, closely pressed together at the apex, which is rounded ;

the sides are margined ; ventral segments punctured. Legs stout, pilose, covered with

a pale pubescence; the tibial and tarsal spines and the calcaria white; the hind tibie

tuberculate on the outer side. The second cubital cellule at the top scarcely half the

length of the third, and slightly more than the space bounded by the recurrent

nervures; the cubitus faint beyond the third cellule.

V 9. Gorytes mexicanus. (Tab. V. figg. 15; 15a, head from in front; 154,

antenna.)

Niger; thorace rugoso-punctato ; scapo antennarum, clypeo, scutello,. fascias duabus abdominis tarsisque, rufis ;

alis fere hyalinis, anticis fulvo-fumatis, stigmate et nervis rufo-testaceis. 9.

Long. 114 millim.

Hab. Mexico, Temax in North Yucatan (Gawmer).

Head large, sharply retreating behind the eyes, and nearly as wide as the thorax.

Eyes parallel, the lateral ocelli separated from them by a rather greater distance than

they are separated from the front ocellus and by a less distance than they are from

each other; ocellar region a little raised; clypeus broadly projecting, the base with

large punctures, the apical half impunctate, the apex margined, hardly waved in the

middle; front and vertex opaque, alutaceous, and with scattered punctures, not

depressed, and without furrows or keels except an indistinct furrow below the ocelli;

front, vertex, and occiput covered with a brownish pile; immediately below and

between the antenne is a fringe of silvery hair; the clypeus bears long fulvous hair.

Antenne thickened towards the apex; the basal joints of the flagellum greatly

elongated; the third joint fully one quarter longer than the fourth. Thorax hardly

shining, sparsely pilose; mesonotum and scutellum strongly and coarsely punctured ;

the mesopleure more shining and less strongly punctured, the keel distinct; the area

on the median segment triangular, 20-keeled, and margined ; the rest of the segment

shining, bearing scattered punctures; the middle region irregularly reticulated longi-

tudinally and much more coarsely punctured than the sides; the pleure shining,

obliquely hollowed in the centre, and sparsely punctured ; the extreme apex over the

GORYTES. 17

coxe coarsely striolated. Abdomen longer than the head and thorax united; the

petiole shining, sparsely punctured, nearly as long as, but much narrower than, the

second segment, dilated at the apex; the rest of the abdomen opaque, closely, but not

coarsely, punctured ; pygidial area coarsely longitudinally striolated, except at the

extreme apex, which is rounded, shining, and impunctate; ventral segments shining,

sparsely punctured. The second and third recurrent nervures roundly elbowed beyond

the middle above ; cubitus very faint beyond the third cubital cellule.

| / 10. Gorytes spilopterus. (Tab. V. fig. 16, 9.)

Gorytes spilopterus, Hand]. Sitz. der k. Akad. der Wissensch. Wien, xevii. p. 414, t. 1. fig. 18 (wing) '.

Hab. Norta America, Nevada 1.—Mexico, Northern Sonora (Morrison).

VIL Gorytes lateritius.

Gorytes lateritius, Hand], Sitz. der k. Akad. der Wissensch. Wien, xevii. p. 442’.

Hab. Mexico, Guanajuato }.

B. yes converging beneath; median segment smooth, shining, impunctate or nearly —

so, its base without keels.

a. Petiole not narrowed and distinctly separated from the second segment.

J 12. Gorytes rubiginosus.

Gorytes rubiginosus, Handl. Sitz. der k. Akad. der Wissensch, Wien, xcvii. p. 502°.

Hab. Mexico, Cuernavaca (Bilimek *).

13. Gorytes venustus.

Gorytes venustus, Cresson, Proc. Ent. Soc. Phil. iv. p. 472°; Packard, Proc. Ent. Soc. Phil. vi.

pp. 423, 4257; Handl. Sitz. der k. Akad. der Wissensch. Wien, xevil. p. 504°.

Hab. Nortu America, Colorado 12,—Mexico, Morelia °.

\/ 14. Gorytes xqualis.

Gorytes equalis, Handl. Sitz. der k. Akad. der Wissensch. Wien, xevil. p. 505°.

Hab. Mexico}.

Y'45. Gorytes montanus. (Tab. V. figg. 17, head from in front ; 17 a, antenna;

17 b, c, male organ.)

Niger, linea pronoti, scutello, maculis 2 in segmento mediali margineque abdominis segmentis, rufis; alis fere

hyalinis, anticis fuscis. ¢.

Long. 8 millim.

Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith).

Antenne inserted opposite the middle of the eyes, and equally distant from the

78 HYMENOPTERA.

ocelli and apex of the clypeus, rather long, subclavate; all the joints (but especially

the basal one) of the flagellum longer than broad ; basal joint thick, shorter than the

third ; the third joint a little longer than the fourth. Head nearly as wide as the

thorax, alutaceous, above covered closely with a fuscous pubescence ; the clypeus and

cheeks with short silvery hair; eyes converging towards the mouth; a narrow furrow

runs down from the ocelli; clypeus broadly but not largely convex, the apex depressed,

slightly waved. Thorax: the mesonotum alutaceous; the pleure shining, impunctate ;

mesopleural keel fine, but distinct. Median segment with the area distinct ; a wide

furrow running down the centre, and from the side of the base a crenulated furrow

runs obliquely to the middle, joining the median furrow near its centre; the segment

itself has a gradual rounded slope; the metapleura has the furrow deep and covered

rather densely with white hair. Abdomen as long as the head and thorax united ; the

petiole becomes gradually widened from the base to the apex, and is about three fourths

of the length of the second segment; the second segment is very gradually and not

greatly widened towards the apex, and is very shining, impunctate ; the other segments

are opaque, very closely covered with a fuscous pubescence. The mesopleural furrow

is nearly complete; the tubercles and a small spot behind them are red; the median

segment has a small red spot in the centre; the inner orbits of the eyes are red in the

middle; the tibie are reddish-yellow in front; the basal joint of the middle tarsi is

yellow in front; the fore tarsi are obscure red at the apices of the joints; the depression

at the front of the scutellum is finely foveolate or rather crenulate; the petiole is

broadly black at the apex and along the sides, and has a squarish mark in the centre at

the base; the other segments are banded with red; the apical segment black, pilose,

impunctate. The second cubital cellule is about half the length of the third at the top,

and longer than the space bounded by the recurrent nervures; the costa is obscure

testaceous, bounded with black ; cubitus faint, but distinct beyond the third cellule. ©

J 16. Gorytes handlirschi. (Tab. V. figg. 18, head from in front; 18 a,

antenna. )

Niger; basi clypei, orbitis oculorum infra, margine pronoti, apice scutelli, maculis duabus parvis segmento

mediali, tibiis subtus marginibusque abdominis segmentis, flavis; alis fere hyalinis, anticis late fumatis.

~ Long. 11 millim.

Hab. Mexico, Xucumanatlan in Guerrero 7000 feet (4. H. Smith).

Antenne subclavate; the third joint a little longer than the first, and nearly one

quarter longer than the fourth ; joints 3-6 longer than broad, 7-11 broader than long,

4-6 and part of 3 dull rufous beneath. Eyes slightly but distinctly converging towards

the clypeus; hinder ocelli separated from each other by a somewhat greater distance

than they are from the eyes. Front and vertex slightly convex, shagreened, and bearing

scattered, moderately large punctures. Frontal furrow narrow, shallow. Clypeus

GORYTES. 79

broadly convex in the middle; the apex almost transverse, depressed, and with a wide

and distinct margin; labrum rounded, and fringed with long golden hair. The inner

orbits of the eyes and a broad irregular stripe across the middle of the clypeus are

yellow. The front and vertex with short, dull fulvous down and long fuscous hair; the

clypeus, cheeks, and labrum with a long silvery, inclining to golden, pubescence.

Thorax shining, the mesonotum finely shagreened, shortly pilose; median segment

covered with long fuscous hair; pleure and sternum with a dull fulvous pubescence ;

the furrow at the base of the scutellum coarsely foveolate ; the edge of the pronotum,

the tubercles, a small spot behind them, a line on the hinder edge of the scutellum, and

a small mark towards the side of the median segment, yellow; area on the base of the

median segment clearly defined; the furrows deep, wide, and indistinctly crenulated ;

the two oblique furrows on the metapleure wide and deep; mesopleural keel distinct.

Petiole smooth, impunctate, shining, gradually but not much thickened towards the

apex, and clearly defined from the second segment ; second segment gradually narrowed

from the base to the apex, the extreme apex not being, or scarcely, narrowed, shagreened,

opaque ; the apex of all the segments bordered with yellow. Legs covered with white

pubescence ; the tibie yellow in front, moderately spinose; fore tarsi with the hairs

long but not numerous, the hairs (as well as those on the other tarsi) pale fulvous.

The second cubital cellule at the top is less than half the length of the third, and hardly

the length of the space bounded by the two recurrent nervures.

The male has the clypeus entirely black ; the antennal joints thicker and those at the

base of the flagellum shorter, the third joint shorter than the first; the metanotum

yellow; the yellow marks on the median segment larger; the cloud in front of the

wings lighter in tint.

J 17. Gorytes fuscipennis. (Tab. V. figg. 19, head from in front; 19 a,

antenna. )

Niger, fulvo-pubescens ; scapo apiceque antennarum, labro, clypeo, linea pronoti, tegulis, scutello, mactlis 2

in segmento mediali pedibusque, rufis; alis fuscis, stigmate flavo. 9.

Long. 10 millim.

Hab. Mexico, Valladolid in Yucatan (Gaumer).

Antenne shorter than the thorax, stout, thickened towards the apex, the third joint

a little longer than the fourth, the basal joint distinctly longer than the third. Eyes

converging beneath. Head alutaceous, densely covered with fuscous pubescence; the

cheeks and clypeus with silvery hair; a fine furrow runs down from the ocelli to the

antenne; clypeus broadly convex, projecting at the apex. Thorax opaque and aluta-

ceous above, densely covered with short fuscous pubescence, the median segment more

closely and with a longer golden pubescence at the base; the pleuree and apex of the

median segment more shining, impunctate; the basal part of the middle furrow on the

median segment narrow, and interrupted before reaching the wide and deeper oblique

80 HYMENOPTERA.

furrows, the apical part of the middle furrow nearly as wide as the oblique furrows ;

the oblique depression on the metapleure shallow, narrow. Petiole shining, impunc-

tate, gradually, but not very much widened towards the apex, the base depressed ; the

other segments densely covered with fulvous pubescence, opaque. Pygidial area

coarsely longitudinally striolated, and bearing stiff silvery pubescence; the apex

impunctate, shining, glabrous. The longitudinal furrow on the mesopleure wide and

deep, and becoming indistinct towards the apex; the oblique furrow obsolete. The

depression in front of the scutellum distinctly foveolate. The scape entirely and the

flagellum beneath, the head in front below the antenne, the margin of the pronotum,

the tegule, the tubercles, the scutellum entirely, the metanotum in the centre, and two

large oblong marks on the lateral apex of the median segment, reddish. The petiole

is yellow at the base, black in the middle, reddish at the apex; the following three

segments at the apex broadly, the apical two entirely, red; the ventral segments are

yellowish at the apex, the apical one entirely red. Legs black at the base; the femora

broadly black above, the anterior pair at the base only; front tarsi strongly spined ;

the hind tibiee with three stout spines laterally and one at the apex. Second cubital

cellule much narrowed above, the two nervures being brought very close together

owing to the second cubital nervure bending gradually to the first ; cubitus distinct,

but thin beyond the third cellule.

Allied to G. phaleratus, but differing in having the scutellum foveolate at the base.

Me Gorytes balteatus. (Tab. V. figg. 20; 20a, head from in front; 204,

antenna.)

Niger ; scapo antennarum, margine pronoti, macula mesopleuralis, scutello, metanoto, maculis 2 in segmento

mediali tegulisque, flavis; flagello antennarum rufo; pedibus flavis, superne nigro-lineatis; alis flavo-

hyalinis. @.

Long. 16 millim.

Hab. Guatemata, Zapote (Champion).

Antenne stout, the joints slightly dilated on the underside, and each longer than

broad, the third and fourth subequal, the basal joint longer than the second and third

united. Head narrower than the thorax, opaque; the front, vertex, and occiput densely

covered with fulvous pile, the cheeks and clypeus with silvery hair; the labrum sparsely

fringed at the apex with long silvery hair; eyes converging beneath; the ocelli in a

slight hollow ; a narrow shallow furrow runs down from the anterior ocellus to the

antenne ; clypeus broadly convex, the apex almost transverse in the middle; the front

bears some scattered punctures. Thorax above densely covered with fulvous pubes-

cence, the sides sparsely with pale, and the breast more thickly with a longer silvery

pubescence, the sides being much more shining than the rest; mesopleural furrow

complete, moderately wide and deep; a narrow furrow runs down from the tegule ;

median segment with a gradual rounded slope, without a basal area, and with a mode-

GORYTES. 81

rately wide shallow central furrow. Petiole as long as the second segment, very

shining, widely hollowed in the centre at the base. The other segments are closely

punctured and covered with reddish-fulvous hair; the pygidial area at the base in the

centre bearing some round punctures, the apex impunctate, the remaining part covered

closely with large, deep, elongate punctures and with long golden hair. Ventral segments

sparsely punctured, covered with fulvous hair; the apical segment with large scattered

punctures, keeled in the middle, and sparsely haired. The following parts are yellow :—

The head below the antenne and the orbits of the eyes above them, the margin of the

pronotum, the tegule, tubercles, a large mark in the fore region of the mesopleure

(not reaching to the bottom), and a narrow oblique line at the apex, a line on the

mesonotum along the tegule, the sides of the median segments, the metanotum, the

petiole (except a large black mark in the middle), the basal two segments and the

apical one entirely, and the other segments broadly at the apex. Fore tarsi moderately

spinose. Cubitus complete.

J 19. Gorytes phaleratus.

Gorytes phaleratus, Say, Bost. Journ. Nat. Hist. i. p. 367; Complete Writings, i. p. 752; Pro-

vanch. Nat. Canad. xiii. p. 69; Handl. Sitz. der k. Akad. der Wissensch. Wien, xcvii.

p. 507°.

Gorytes fulvipennis, Smith, Cat. Hym. Ins. iv. p. 367; Packard, Proc. Ent. Soc. Phil. vi. pp. 423,

426.

Gorytes apicalis, Smith, Cat. Hym. Ins. iv. p. 369.

Gorytes modestus, Cresson, Proc. Ent. Soc. Phil. iv. p. 473; Packard, Proc. Ent. Soc. Phil. vi.

p. 423.

Gorytes rufo-luteus, Packard, Proc. Ent. Soc. Phil. vi. pp. 428, 425.

Gorytes flavicornis, Packard, Proc. Ent. Soc. Phil. vi. pp. 424, 429.

Hab. Norra America, Canada and United States1, widely distributed.—MEeExico,

Cuantla 4.

v 20. Gorytes notabilis.

Gorytes notabilis, Handl. Sitz. der k. Akad. der Wissensch. Wien, xcvii. p. 520°.

Hab. Mexico, Cordova}.

J 21. Gorytes alticola. (Tab. V. figg. 21, head from in front ; 21, antenna.)

Niger ; antennis rufis; mesonoto rufo-fulvo; linea pronoti, lineis duabus mesonoti, scutello, lineis duabus

in segmento mediali, basi petioli abdominisque segmentis apicibus, flavis; abdominis basi sordide rufo-

fulva ; alis fusco-fumatis, apice fere hyalinis, stigmate ochraceo. 3 2.

Long. 12 millim.

Hab. Mexico, Chilpancingo in Guerrero 4600 feet (H. H. Smith).

Antenne perceptibly thickened from the middle to the apex ; the basal joint longer

BIOL. CENTR.-AMER., Hymenopt., Vol. IL., May 1890. MM

82 HYMENOPTERA.

than the third, the third and fourth joints subequal, the third to the seventh longer

than broad, becoming gradually shorter, the last joint longer than the preceding. Eyes

distinctly converging towards the clypeus; the hinder ocelli separated from each other

by about the same distance that they are from the front ocellus. Front and vertex

sparsely punctured, covered with a golden or fulvous pubescence and with some fuscous

hairs; the frontal furrow very fine, almost obsolete. Clypeus convex, margined and

waved at the apex, densely covered with silvery pubescence. ‘Thorax impunctate; the

mesonotum opaque, covered with a short, close, brownish-fulyous pubescence; pleure

shining, sparsely pubescent; median segment densely covered with a thick fulvous

pile; mesonotal furrow curved, deep; mesopleural furrow almost complete; there is a

curved, narrow, semioblique furrow on the metapleure, reaching from a little above the

middle to the bottom; the furrow running down from the spiracle is of the same width

and form, but longer; area on the median segment impunctate and without keels, the

central furrow not reaching the base, the lateral furrow shallow, not striolate, running

into the apical central furrow. Petiole three-fourths of the length of the second

segment, becoming gradually thickened towards the apex ; the second segment narrowed

at the base, impunctate, clothed with very short pubescence; the third segment at the

base glabrous, shining, the rest of it and the other segments densely covered with short

fulvous pubescence; pygidial area coarsely longitudinally striolate and sparsely covered

with a stiff silvery pile. Antenne reddish; the basal joint yellow beneath, the apical

joint more or less blackish on the lower side. The clypeus, the inner orbits of the

eyes to the antenne, the base of the mandibles, the margin of the pronotum, the

tubercles, a spot behind them, a broad line on the mesonotum along the tegule, the

hinder margin of the scutellum, and two large oblong marks on the median segment,

are yellow. Petiole reddish, the sides and apex broadly yellow; the second segment

fulvous-red, the apex yellow, the base black; the other segments blackish, obscure

yellow at the apex; pygidial area obscure rufous; the ventral segments black at the

base, then rufous, then yellow, the rufous running into the yellow. Legs reddish,

inclining to yellow ; the coxe, trochanters, the greater part of the femora, and a line

on the apical part of the hinder tibie, black. Wings smoky, with a violet-fulvous

tinge, the apex paler; the costa and stigma rufous; the nervures reddish at the base,

fuscous at the apex.

The male differs from the female in having the yellow on the abdomen clearer, and

the flagellum of the antenne for the greater part black above, beneath obscure red ; the

joints of the flagellum thicker and broadly projecting on the underside, especially the

seventh to the twelfth; the apical abdominal segment smooth and impunctate, sparsely

pubescent.

In both sexes the mesonotum is sometimes obscured with reddish.

G. fuscipennis is closely allied to G. alticola, but is smaller and more slenderly

built, the head especially being smaller and not so stout; and also has the frontal

GORYTES. 83

furrow distinct, the clypeus hardly so convex (its colour not yellow, the red extending

to the antenne), the metanotum not black, the furrows on the median segment deeper

and the central one complete, the petiole narrower, longer, and more depressed and

narrower at the base (the basal part forming a distinct neck clearly separated from the

rest), and the abdomen differently coloured. In G. alticola the second cubital cellule

is fully three-fourths the length of the third, and not narrowed almost to a point

as jn G. fuscipennis. |

22. Gorytes alpestris. (Tab. V. figg. 22; 22a, head from in front; 22 6,

antenna; 22c, male organ.) :

_ Long. 10 millim. ¢ Q.

Hab. Mexico, Chilpancingo in Guerrero 4600 feet (H. H. Smith).

Amongst the specimens of Gorytes captured by Mr. Smith at Chilpancingo there are

some very similar in general coloration and form to the preceding species, but apparently

distinct from it. In these examples, which I have separated under the above name,

the clypeus and cheeks want the dense silvery pile of G. alticola; the clypeus is black,

with a yellow mark in the middle, and is sparsely covered with large punctures and not

nearly so convex; the antenne are more suddenly thickened at the apex, and are red,

with the apical four or five joints black, the third joint also being longer in proportion

to the fourth and distinctly more elongate than the first; the frontal furrow is narrow

but distinct ; the apical two furrows on the metapleuree are deeper and wider (being

fully twice the width of those of G. alticola); the furrows bounding the basal area of

the median segment are wider and crenulated, the central one being wider, deeper, and

complete; the petiole has its basal two-thirds black, the black followed by a reddish

mark, the apex being broadly yellow; the second segment is black at the base, yellow

at the apex, reddish in the middle; the third black at the apex, broadly yellow in the

middle ; the other segments for the greater part yellow; the apical segment rufous,

striolated.

The male differs from the same sex of G. alticola in the same points as does the

female. ‘The wings are deeper in tint and of a more violet colour than in the female.

The abdomen and median segment are neither punctured nor aciculated; the legs

moderately spined. I am almost sure that the suture at the base of the scutellum is

foveolate; but as in all the specimens the pin goes through it, I can only see it at

the sides.

MM 2

84 HYMENOPTERA.

b. First abdominal segment petiolate, much longer than broad, clearly separated from

the second ; eyes converging at the apex; front with a furrow ; depression between

the scutellum and mesonotum foveolate ; median segment without an area, shining,

furrowed down the middle ; body almost impunctate, covered with a close fulvous

pubescence, and usually well marked with yellow spots; wings fulvous, fuscous, or

Pe without fascie.

23. Gorytes splendidus.

Gorytes splendidus, Handl. Sitz. der k. Akad. der Wiss ensch. Wien, xcvii. p. 513°.

Hab. Mexico, Huastec’.

\ /24 Gorytes centralis, (Tab. VI. figg. 1, 9 ; la, head from in front; 14,

antenna.)

Niger; antennis rufis, medio supra nigro; facie, margine pronoti, lineis 2 mesonoti maculisque 4 in segmento

mediali, flavis; alis fulvo-hyalinis. 9.

Long. fere 12 millim.

Hab. Mexico, Atoyac in Vera Cruz (H. H. Smith), Temax in North Yucatan (Gaw-

mer); GUATEMALA, San Gerénimo (Champion).

Antenne reddish, the scape yellow beneath ; joints 2-7 of the flagellum black above ;

the basal joint shorter than the third, which is distinctly longer than the first and

second united ; the third joint one quarter longer than the fourth. Head narrower than

the thorax; above densely covered with golden-fulvous pubescence and sparsely clothed

with long fuscous hairs, the clypeus with a silvery pile; front bearing scattered punc-

tures, the furrow well developed; ocelli forming a triangle; the head in front below

the antenne, entirely, and the basal half of the mandibles yellow. Mesonotum with a

dense fulvous pile and rather long black hair; marked with fine scattered punctures ;

the pleurs very shining, impunctate, sparsely haired; the breast covered with a dense

silvery pile. The depression in front of the scutellum foveolate throughout. Median

segment with a gradual rounded slope, covered rather closely with long dull fulvous

hair; the middle furrow becoming much wider and deeper beyond its junction with

the lateral keels, but not reaching the apex. Mesopleural furrow reaching a little

beyond the middle, and an oblique curved furrow runs down from the tubercles, but

not reaching the longitudinal furrow. Over the hind legs is a short wide furrow with

three stout keels. The thorax has the margin of the pronotum, the tegule, tubercles,

the greater part of the mesopleure, the metapleure (except a black line at the apex),

two broad longitudinal lines on the mesonotum, the scutellum (except a longitudinal

line at the base), two small oval oblique marks at the base of the median segment, and

two large ones occupying the greater part of either side at the apex, yellow. Petiole

as long as the second segment, dilated at the apex; the second segment at the base

GORYTES.—MELLINUS. 88

not wider than the apex of the petiole, forming a short neck, from which the rest of

the segment becomes suddenly dilated. Pygidial area shining, almost glabrous, with

scattered punctures along the sides; the apex rounded, impunctate. The petiole bears

long fuscous hair; the other segments are densely covered with fulvous pubescence ;

the petiole and the second segment at the base and apex, the following segments at the

apex, the apical one entirely, the first and second segments entirely beneath, and the

others at the apex beneath, are yellow; the second segment above is not much less than

one half the length of the third above. Legs yellow, the femora, tibiz, and the base of

the tarsi lined with black above; anterior tarsi sparsely and strongly spined. Wings

hyaline, with a fulvous tinge, the stigma pale yellow; cubitus complete.

From the preceding species, G. centralis may be readily known by the shining,

almost impunctate pygidial area; the third joint of the antenne longer than the first

(one quarter longer than the fourth), the median segment with four yellow marks, &c.

G. splendidus agrees with G. centralis in the form of the pygidial area; but it has the

“ fiihlerschaft merklich grésser als das dritte Glied.”

MELLINUS.

Mellinus, Fabricius, Ent. Syst. ii. p. 285 (1793); Handlirsch, Sitz. der k. Akad. der Wissensch.

Wien, xcvi. p. 538. om

A genus of small extent (only eight species have been described), but of wide distri-

bution, being found in the Palearctic, Oriental, Nearctic, and Neotropical regions. The

common European species (If. arvensis) stores its nest with Diptera.

/'1. Mellinus pygmeus. (Tab. V. fig. 5.)

Mellinus pygmeus, Handl. Sitz. der k. Akad. der Wissensch. Wien, xcvi. p. 71".

Hab. Mexico, Orizaba (Bilimek', H. H. Smith, and F. D. G.).—BRaziu.

Vv 2. Mellinus alpestris. (Tab. V. fig. 6.)

Niger, nitidus; capite et thorace aciculatis ; clypeo, scapo, lineis pronoti, scutello, macula metanoti, maculis

abdominis, tibiis tarsisque anticis, flavis; alis fere hyalinis, nervis nigris. 9.

Long. 7 millim.

Hab. Mexico, Xucumanatlan in Guerrero 7000 feet (H. H. Smth).

Head and thorax clothed with short pubescence ; eyes parallel; ocelli hardly forming

a triangle, and the hinder ocelli separated from the eyes by about the length of the

fourth antennal joint and by a somewhat greater distance from each other; clypeus

broadly rounded at the apex, the middle with three short broad teeth; the clypeus

entirely, the base of the mandibles, and the inner orbits of the eyes narrowly, yellow.

Two closely situated lines on the pronotum, the tubercles, the tegule in part, a

squarish mark on the scutellum, a smaller one on the metanotum, and an elongated

86 HYMENOPTERA.

mark on the side of the basal area of the median segment, are yellow. Median segment

aciculated, very finely and coarsely punctured ; the basal area raised, a little longer than

broad, rounded at the apex; the apex of the segment with a gradual slope, the centre

depressed at the base. Abdomen shining, impunctate, the apical segments covered with

short whitish hair. Pygidial area coarsely aciculated, depressed before the apex,

which is about one fourth of the width of the base; the sides straight. Petiole not

curved on the lower side, dilated at the apex, a little longer than the second segment ;

the basal half of the petiole, a somewhat oval spot on the sides of the second segment,

a longer pair on the third, and a stripe on the apex of the penultimate segment, yellow.

The anterior knees, tibis, and tarsi in front, and all the spurs, are yellow. The first

transverse cubital nervure is bent backwards in the middle, thus forming an angle

there, the second straight and oblique, the third bent above the middle. The third

antennal joint is hardly one quarter longer than the fourth.

PHILANTHOCEPHALUS, gen. nov.

Eyes emarginated at the top on the inner side, reaching to the base of the mandibles. Wings with four

- cubital nervures, the second and third receiving each a recurrent nervure ; radial cellule elongate, acute

at the apex; second and third cubital cellules broad at the top, especially the second; anal nervure in

the hind wings interstitial, or received a little beyond the cubital. Stigma elongated, narrow. Abdomen

petiolate, the petiole at least two thirds the length of the other segments united; furrowed laterally,

dilated at the apex. Spurs on the hind tibie not flattened, the inner one not dilated. Middle tibie

with two spurs. Head usually broader than the thorax; occiput margined. Pygidial area flat, not

differing from the penultimate segment, the sides not margined, the apex rounded.

The affinities of Philanthocephalus are, it seems to me, with Mellinus, although it

differs widely from that genus in many respects. ‘The head is differently shaped,

having quite a Philanthus-look, not only from the general form of the head itself, but

from the incised eyes; in the alar neuration, again, it varies from JMellinus in the first

recurrent nervure being received in the second (not in the first) cubital cellule. From

the Mimeside it may be known by the incised eyes and by the two spurs to the middle

tibie ; in its general form, however, Philanthocephalus more nearly resembles Mellinus

than Mimesa.

The maxillary palpi are six-, the labial palpi four-jointed, and the form of the trophi

does not differ materially from that of Gorytes or Mellinus. In the male genital

armature there is no essential divergence from these two genera.

Synopsis of the Species.

1 (6). Head and median segment punctured.

2 (3). Head rugosely punctured, entirely black ; the thorax and apex of the

median segment, the abdomen only on the second segment, marked

with yellow . . 2. 2. 6. 1 1 ew ew ee ww ee ee) Airticeps.

1570

PHILANTHOCEPHALUS. 87

3 (2). Head finely punctured ; apical segments of the abdomen yellow.

4 (5). Length at least 10 millim. (¢); clypeus yellow ; anterior tibiz and

tarsi only yellow in front. . . . . . . mexicanus.

5 (4). Length 8 millim.; clypeus black ; anterior ‘tibize and tarsi entirely

yellow . ... eee ee ee eee ew ww punetifrons.

6 (1). Head and median segment impuuctate.

7 (8). Pubescence on face silvery; legs for the greater part black; the

second abdominal segment only yellow; wingssmoky . . . . maculiceps.

8 (7). Pubescence on face golden; legs for the greater part yellow; the ,

abdominal segments margined with yellow; wings hyaline. . . gracilis.

A. Hind wings with the anal nervure interstitial. (Species 1-3.)

v 1. Philanthocephalus hirticeps. (Tab. VI. figg.2 ¢; 2a, head from in front;

26, male organ.) |

Niger, longe hirtus, facie aureo-pilosa; capite rugoso-punctato; segmento mediali leviter punctato; maculis

pronoti et apice segmento mediali flavis ; antennis longis ; alis fumato-hyalinis. ¢.

Long. 13 millim.

Hab. Mexico, Atoyac in Vera Cruz (Schumann).

Head densely covered with long fuscous hair, especially at the sides behind, the

clypeus and cheeks with golden hair, rugosely punctured. Clypeus yellow, rounded,

not projecting in the middle, finely and sparsely punctured. Furrow from the ocell;

broad and deep, narrowed towards the apex. Antenne more than twice the length of

the thorax, not perceptibly thickened towards the apex; the third joint not quite twice

the length of the fourth. Thorax covered with long fuscous hair; the mesonotum and

the apex of the median segment sparsely punctured; the mesonotal furrows deep and

wide; the fovea on the median segment twice as long as broad, acute at the base and

apex, deep; the apical furrow wide and deep. Petiole as long as the second, third,

and fourth abdominal segments united, the segments impunctate; the petiole sparsely,

the other segments more thickly, covered with long pale hairs; the third and following

ventral segments broadly clothed at the apex with a silvery pile, and the third, fourth,

and fifth laterally with long tufted black hair, the apical segment sparsely clothed with

pale hairs; the second segment has a yellow line on either side above. The anterior

tibiee and tarsi are yellow in front; the basal and third joints of the hinder tarsi are

dilated gradually from the base and apex on the underside. The second cubital cellule

is not much shorter than the third.

A distinct species, easily known by the longish antenne, the rugose head, the golden

pubescence on the face, the dilated first and third hinder tarsal joints, and the lateral

tufts of hair on the abdominal segments.

88 HYMENOPTERA.

f 2. Philanthocephalus maculiceps. (Tab. VI. figg. 3, head from in front, ¢ ;

3a, male organ.)

Niger, levis, capite et thorace flavo-maculatis ; segmento mediali levo ; apice abdominis segmento 2° flavo

tibiis tarsisque anticis flavis ; alis fere hyalinis, nervis fuscis, stigmate testaceo. 2 ¢.

Long. 12-15 millim,

Hab. Mexico, Temax in North Yucatan (Gawmer).

Head shining, almost impunctate, sparsely pilose; the cheeks and clypeus with

silvery hair. Clypeus convex, projecting a little at the apex; the middle forming a

semicircular projection, which is larger than the lateral pieces and is margined. The

furrow from the ocelli is broad and deep nearly halfway to the antenne, then very

narrow and shallow, becoming wider and deeper towards the apex. ‘The inner orbits

of the eyes, the edge of the clypeus, the base of the mandibles, two marks behind the

ocelli and two others lower down touching the occiput, are pale yellow. Antenne

stout, becoming gradually thicker from the third joint, which is twice the length of the

fourth; the middle joints nearly as long as broad. Thorax shining, impunctate, sparsely

pilose; the furrows on the mesonotum shallow; the fovea at the base of the median

segment longer than broad, almost oval; the apex of the median segment oblique,

deeply and widely furrowed ; the pronotum, one, two, or three marks on the scutellum,

the metanotum, two large marks on the median segment, the tegule, and tubercles,

yellow. Abdomen shining, impunctate; the petiole as long as the second and third

segments united; the pygidial area almost impunctate, depressed before the apex ; two

marks on the apex of the petiole, a moderately broad line on the apex of the second

segment, and a much narrower and more indistinct one on the third and fourth, yellow.

Legs and wings almost as in P. hirticeps.

In the male the antennz are longer and somewhat more slender, and entirely rufous

beneath ; the clypeus and orbits are broadly yellow and densely covered with long

silvery hair ; the marks on the vertex are absent, or very much reduced; the scutellum

is not marked with yellow; there are no marks on the petiole; and the belts on the

abdominal segments are much reduced in size, if not absent.

A smaller species than P. mexicanus, and differing from it by the impunctate head,

the wide and deep furrow below the ocelli, the more projecting, rounder, and wider

apex of the clypeus, which is separated from the lateral pieces by a deep incision, the

impunctate median segment and pygidial area, &c.

~{ 3. Philanthocephalus gracilis. (Tab. VI. figg. 4, ¢; 44, head from in front ;

4 6, male organ.)

Niger, levis; facie, abdominis segmentis marginibus pedibusque flavis; alis hyalinis, nervis fuscis, costa

stigmateque sordide testacis. 9 d.

Long. 10-11 millim.

Hab. Mexico, Presidio (Forrer), Rio Papagaio 1200 feet, Chilpancingo 4600 feet,

both in Guerrero (H. H. Smith).

PHILANTHOCEPHALUS. 89

Head shining, almost impunctate, covered with long fuscous, the face with golden,

hair. Vertical furrow wide and deep, of nearly equal width throughout. Clypeus

convex, rounded at the apex. Below the antenne (including the mandibles) the head

is entirely clear yellow; the scape is yellow beneath; the flagellum broadly fulvous.

Antenne stout, not attenuated towards the apex; the third joint one quarter longer

than the fourth. Thorax shining, sparsely punctured; the fovea on the median

segment elongate, twice as long as broad; the apical furrow wide, deep; a line

on the pronotum, the tubercles, a mark behind them, the tegule, four marks on the

scutellum, the metanotum, and two large marks on the median segment, clear yellow.

Petiole nearly as long as the second, third, and fourth abdominal segments united; a

mark on either side of the petiole at the apex, the second segment somewhat broadly

at the apex, and the other segments more narrowly, yellow. Pygidial area with some

scattered punctures. The anterior coxe and trochanters, the middle coxe and

trochanters narrowly beneath, the femora, tibiz, and tarsi, clear yellow; the anterior

and middle femora at the base above, the posterior femora above and entirely at the

base, the posterior tibie behind, and the apices of the tarsal joints, black.

B. Hind wings with the anal nervure received beyond the posterior transverse nervure.

/ (Species 4 & 5.)

’ 4, Philanthocephalus mexicanus. (Tab. VI. figg. 5, head from in front, 5a,

trophi, ¢; 56, male organ; 6, 2 *.)

Niger, thorace flavo-maculato; fronte leviter rugosa; vertice punctato; apice segmento mediali punctato ;

abdominis apice flavo aut fulvo; alis fusco-hyalinis. 9 ¢.

Long. 9 14-17, 6 10-12 millim.

Hab. Mexico, Tierra Colorada 2000 feet, Rincon 2800 feet, Rio Papagaio 1200 feet,

Chilpancingo 4600 feet, all in Guerrero (H. H. Smith), San Blas in Jalisco, Atoyac in

Vera Cruz (Schumann), Temax in North Yucatan (Gawmer).

- Hinder ocelli separated from the eyes by a space equalling the length of the third

antennal joint, and from each other by the length of the fourth. Clypeus roundly

projecting, but not semicircular at the apex, being there too sharp. ‘The vertex is

sparsely and finely punctured; the front is more opaque and closely striolated; the

clypeus is finely punctured. The apical ocellus is in a pit, and a fine furrow runs down

from it, ending in an oblong fovea between the antenna. ‘The vertex has a plumbeous

hue; the clypeus is yellow, the yellow being prolonged above in the middle to near

the base of the antenne, the prolongation being sharply rounded. ‘The mandibles are

striolated, yellow, and finely punctured at the base. The palpi are testaceous. The

mesonotum has a plumbeous hue, and is shining, sparsely and finely punctured; the

pleure are still more closely, and the median segment (except at the base, which is

* By an oversight, the numbers at the bottom of the Plate are given as 5, 5a, 69: they should be 5, 5a,

63,69.

BIOL. CENTR.-AMER., Hymenopt., Vol. II., June 1890. NN

90 HYMENOPTERA.

impunctate) very closely punctured. There is a wide central and two somewhat

narrower furrows on the mesonotum, and a much finer furrow runs outside these; at

the extreme base of the median segment is a fine furrow terminating in a large, deep,

pear-shaped fovea (widest at the base), which does not reach to the punctured part of

the segment. The pronotum, tegule, tubercles, metanotum, a spot on either side of

the scutellum, and two large spots on the sides of the median segment are yellow.

Petiole a little longer than the second and third abdominal segments united, furrowed

laterally, and dilated at the apex; the petiole and the second segment are almost im-

punctate ; the other segments are finely punctured, the punctuation becoming closer

and stronger towards the apex. Pygidial area closely punctured; the apex rounded,

slightly incised. A mark on either side of the apex of the petiole, one on the sides of

the second segment, extending all round beneath, and a line on the apex of the fourth

segment, yellow; the apical segments more or less dull rufous. Tibie stoutly spined ;

the tarsi (particularly the anterior pair) bearing long bristles. The anterior and middle

tibia are yellow in front, as are also the anterior tarsi; the posterior tarsi have joints

2—4 broadly whitish, yellow at the base. Antenne stout, thick from the fourth joint,

not much attenuated towards the apex, the apical joint longer than broad, the second

joint broader than long; the third joint nearly twice the length of the fourth; the

basal and apical joints are more or less rufous beneath. The second recurrent nervure

is almost interstitial; the third transverse cubital nervure is curved at the base. The

pubescence all over the body is short and sparse; the vertex and mesonotum are almost

glabrous.

The male has the head covered with long fuscous hair, which becomes silvery on the

face and clypeus; the punctuation on the vertex much stronger and closer, and the

striation on the front also stronger; the clypeus convex in the middle, and projecting

gradually at the apex; the pubescence on the thorax stronger; and the antenne longer

and becoming gradually stouter from the third joint. It sometimes has three yellow

marks on the scutellum, and the abdominal segments 4-6 banded with yellow at

the apex.

A variable species in coloration. In some specimens the clypeus is almost black ;

the scutellum wants the yellow spots ; the yellow on the metanotum is narrow or entirely

absent; the marks on the median segment are attenuated ; and the apical three or four

segments are entirely rufous. The same remarks apply to the male.

Vv 5, Philanthocephalus punctifrons. (Tab. VI. figg. 7, head from in front, g ;

7 a, male organ.)

Niger, facie argenteo-pilosa ; capite et segmento mediali punctatis; abdominis segmentis 2° et 4°-6™ flavo-

balteatis ; tibiis tarsisque anterioribus flavis; alis fere hyalinis. ¢.

Long. 8 millim.

Hab. Panama, Bugaba (Champion).

Vertex and front covered with long fuscous, the face with silvery, hair; the vertex

PHILANTHOCEPHALUS.—SPHECIUS. 91

sparsely and finely, the front rather strongly and closely, punctured ; vertical furrow

thin, short, not reaching more than halfway between the antenne and ocelli; inner

orbits of the eyes yellow. ‘Thorax finely, the median segment more strongly, punc-

tured; stoutly and closely pubescent; basal fovea of median segment pear-shaped,

deep; apex of the median segment oblique, moderately deeply furrowed ; a line on the

pronotum, the tubercles, a spot behind them, the tegule, the greater part of the

scutellum, the metanotum, and two large, longish marks on the median segment,

yellow. Abdomen with two marks on the apex of the petiole, a large band on the

second segment, and one on the fourth and following segments (including the pygidial

area), yellow; ventral segments densely covered with fuscous hair. The anterior and

middle knees and tibie, and all the tarsi, yellow, the tarsal joints black at the apex.

The second recurrent nervure is almost interstitial.

Fam. BEMBICIDZ.

SPHECIUS.

Sphecius, Dahlbom, Hymen. Europ. i. p. 154 (1843) ; Patton, Bull. U.S. Geol. & Geogr. Surv. v.

p. 34 (1880).

Hogardia, Lepeletier de Saint-Fargeau, Hist. Nat. des Ins., Hymén. ili. p. 288 (1845).

Stizus, Smith, Cat. Hym. Ins. iv. p. 836 (nec Latreille) ; Packard, Proc. Ent. Soc. Phil. vi. p. 441 ;

Taschenberg, Zeitschr. f. d. ges. Naturw. Sachs. Thiir. xlv. p. 359.

1. Sphecius speciosus. (Tab. VI. fig. 8, 2.)

Sphex speciosus, Drury, Exot. Ins. ii. p. 71, t. 38. fig. 1(¢).

Stizus speciosus, Lep. de Saint-Farg. & Serv. Encycl. Méthod. x. p. 496, t. 382. fig.6 (9); Westw.

ed. Drury’s Exot. Ins, ii. p. 77, t. 88. fig. 1 (2); Blanch. Dict. Univ. d’Hist. Nat., Atlas, i.

Hymén. t. 2. figg. 3 (3), 7( 2); Smith, Cat. Hym. Ins. iv. p. 336; Packard, Proc. Ent. Soc.

Phil. vi. p. 442 (9); Walsh, Am. Ent. i. p. 129, fig. 103, & ii. p. 87, fig. 57 (¢).

Hogardia speciosa, Lep. de Saint-Farg. Hist. Nat. des Ins., Hymén. iii. p. 290.

Sphecius speciosus, Dahlb. Hymen. Europ. i. p. 154(¢?); Patton, Bull. U.S. Geol. & Geogr. Surv.

v. p. 3427.

? Sphecius speciosus, var. convallis, Patton, Bull. U.S. Geol. & Geogr. Surv. v. p. 343.

Vespa tricincta, Fabr. Ent. Syst. ii. p. 254; Syst. Piez. p. 254.

? Stizus grandis, Say, West. Quart. Rep. ii. p. 77; Am. Ent. p. 3, t. 2. figg.1(?),2(8) ; Complete

Writings, i. pp. 8, 165, t. 2. figg. 1 (2), 2 (4); Packard, Proc. Ent. Soc. Phil. vi. p. 442 (9);

Riley, First Ann. Rep. Ins. Missouri, p. 27, fig. 12(@) (1869) ; Walsh, Am. Ent. 1. p. 8, fig. 3,

& p. 129, fig. 102 ( ¢).

? Stizus fervidus, Cresson, Trans. Am. Ent. Soc. iv. p. 223 (9).

Hab. Nortu America, from Connecticut southwards.—GuaATEMALA, Panzos in Vera

Paz (Champion); Honpuras, Ruatan Island (Gawmer).

It is a questionable point as to whether S. grandis, S. fervidus, S. speciosus, var.

convallis, S. raptor, Handl., and S. hogardii are distinct species, or only varieties of

S. speciosus. Patton was inclined to regard them as forms of S. speciosus, but Hand-

NN 2

92 HYMENOPTERA.

lirsch treats them as good species. 8S. hogardii is distinguished (teste Handlirsch) by

the abdomen wanting the yellow markings; S. raptor, S. spectabilis, and 8S. speciosus

have yellow marks only on the first two or three segments, S. raptor having the body

red, the two others having it black ; S. spectabilis has only the first and second segments

marked with yellow and the wings “ vix lutescentes,” and S. speciosus has the third

segment marked with yellow, and the wings “valde lutescentes.” SS. grandis and 8,

Jervidus (having the five segments marked with yellow) are separated énter se by the

former having the wings “ valde infumate,” as opposed to the wings “ parvum infumate,

in area radiali obscuriores” of S. fervidus. The specimens from our region have the

pro- and mesonotum rufous; those from Guatemala have the basal two, the one from

Honduras the basal three, segments marked with yellow; the latter has, if anything,

the wings rather lighter in tint, although in all the rufo-fulvous tinge is conspicuous.

The amount of red on the thorax and of yellow on the abdomen is not alike in any of

the specimens. |

This insect preys on Cicade. Patton! thus remarks on its habits: ‘‘I have observed

this wasp dragging its prey, the Cicada pruinosa, Say. The Cicada, paralysed by the

sting of the wasp, was placed upon its back with the wings folded. The wasp, standing

over it, caught hold of the bases of the wings with the claws of her intermediate tarsi,

and, walking upon her anterior and the tips of her posterior tarsi, dragged the Cicada

head foremost over the ground, the intermediate tarsi of the wasp extending from the

bases of the wings to the eyes of the Cicada. Proceeding in this manner, and with an

occasional flutter of the wings if harassed, she ascended a small evergreen tree,

probably to attain an elevation from which to take flight, and was there lost to view.”

STENIOLIA.

Steniolia, Say, Bost. Journ. Nat. Hist. i. p.367 (1837) ; Complete Writings, ii. p. 751; Handlirsch,

Sitz. der k. Akad. der Wissensch. Wien, xcviil. p. 504.

This genus agrees with Monedula in the front ocellus not being linear and trans-

versely curved as is the case with Bembexr and Bembidula; but the maxillary palpi

have only three joints and the labial palpi only one joint; the anterior ocellus is

elliptical ; and the maxille are elongate, reaching, when pressed, nearly or quite to the

hind coxe. Like Monedula, Steniolia is confined to the Neotropical and Nearctic

Regions.

1. Steniolia longirostra. (Steniola longirostra, Tab. VI. figg. 9, male organ ;

10, 9.)

Bembex longirostra, Say, Bost. Journ. Nat. Hist. i. p. 866°; Complete Writings, ii. p. 751.

Steniolia longirostra, Handl. Sitz. der k. Akad. der Wissensch. Wien, xcviii. p. 508”.

Monedula montezuma, Smith, Cat. Hym. Ins. iv. p. 334°.

Hab. Mexico!?*, Northern Sonora (Morrison), Venta de Zopilote in Guerrero

2800 feet, Cuernavaca (H. H. Smith); Guatemata, Panajachel 5000 feet, San Geré-

nimo 3000 feet (Champion). —_

STENIOLIA. . 93

Antenne black above, the basal three joints pale yellow and the other joints fulvous

beneath ; the third joint one quarter longer than the fourth. Front and vertex densely

covered with long brownish, the face, labrum, and clypeus much more sparsely with

white, hairs, and bearing scattered punctures. The mandibles, labrum, clypeus, and

orbits broadly in front, narrowly behind, a conical mark on either side of the anterior

ocellus uniting in front, and a narrow line on the vertex behind, pale lemon-yellow ; the

marks on the front with an orange tinge; the maxille brownish. Thorax above bearing

a dense brownish pubescence; the sides and sternum with longer pale cinereous hair.

Prothorax yellow, black in front, and with a large triangular mark laterally ; two short

lines on the mesonotum in front of the middle, a line extending along the sides from

the front of the tegule to the scutellum, a short line in front of the scutellum, a conical

mark on either side of the scutellum, the postscutellum, two oblique lines (becoming

gradually wider towards the apex) on either side of the metanotum in front and almost

uniting, yellow, with an orange tinge ; mesothorax laterally and beneath yellow, the

sutures, an oblique line below the hind wings, and a large oval mark on the sternum,

black ; metapleure black ; a small mark below the wings and a larger and more irregu-

larly shaped one lower down, yellow. Thorax closely and rugosely punctured ; the sides

punctured, the punctures large and clearly separated ; the mesonotum depressed in the

centre. Abdomen shining, the base aciculated ; the apical segment covered with large

punctures; the base bearing fuscous hairs. Basal segment black, a large oblique mark

on either side, and two marks in the centre at the apex, yellow; the second segment

similarly marked, but with the lateral marks much larger and the central ones longer

and transverse, not oblique ; the third and fourth segments bear lines which are brown

at the basal half, and become narrowed towards their apices, which are turned up, the

two lines being almost united; a similarly shaped line is on either side of the fifth

segment, the two lines being completely united; the last segment is yellow, with a

black line down the centre, and bears a few black bristles at the base, beneath it is

yellow, with an interrupted black line down the middle. Legs yellow, the hind tibiz

and tarsi almost white, and covered with a white pile; the femora lined with black

above, and with a distinct brownish-red tinge.

Length 15-17 millim. |

In the male the two or three basal joints of the antenne only are yellow beneath,

the others being entirely black; the marks at the ocelli are very small; the vertex is

entirely black, wanting the yellow line; there are two small black marks on the

clypeus; the prothorax is black, lined with pale yellow at the edges; the mesonotum

is generally without yellow marks; the lateral marks on the scutellum are small ; there

is only a small yellow mark on either side of the metanotum; and the pleure are

entirely black, except the tubercles. The basal segment of the abdomen hasan oblique

line at the base and two pear-shaped transverse marks in the middle; the second and

third segments have oblique lateral lines, and two central marks which are broader

than long and truncated at the ends; the lateral marks on the other segments are

94 HYMENOPTERA.

transverse, like the central ones, and nearly in a line with them ; the penultimate

segment has one continuous line; and the last segment has a black line down the

centre. The basal ventral segment has a large black band at the base, from which

proceeds a broad black longitudinal line to the apex (in some examples the entire

segment is black), the other segments being edged with black.

In some examples of the female the ventral segments are almost without black ;

others have a longitudinal black line on the basal segment and a more or less long

black transverse one on the others.

A very variable species, especially in the colour of the abdomen in the male. I have

examined the type of Monedula montezuma, Smith.

4 2. Steniolia scolopacea. (Steniola scolopacea, Tab. VI. figg. 11, ¢; 11a, male

organ; 116 & 11e, terminal ventral segment, ¢ .) |

Steniolia scolopacea, Handl. Sitz. der k. Akad. der Wissensch. Wien, xcviii. p. 510°.

Hab. Nort America, Nevada, California 1.—Mextco, Northern Sonora (Morrison),

Jaral near Guanajuato (Schumann).

Antenne with the basal joints pale yellow, the apical ones dull fulvous, beneath ;

the third joint one quarter longer than the fourth. Head black, covered with long

cinereous hair on the front and vertex, the hair on the face white; obscurely punc-

tured ; the orbits narrowly above (except at the extreme top), broadly beneath, a mark

surrounding the anterior ocellus (dilated laterally), the clypeus, labrum, mandibles

(except at the apex), and palpi, clear pale yellow; the maxille honey-yellow. Thorax

covered with long cinereous or whitish hair. Prothorax clear pale yellow, an irregular

black line on the edge of the pronotum; mesonotum black, closely punctured, two short

marks in front, a line along the tegule, a brown mark before the scutellum, a large

mark on either side of the scutellum, and the postscutellum, yellow; mesopleure and

sternum black, a large mark on the former in front and the centre of the latter yellow ;

metanotum black, a curved line (dilated laterally at the apex), and the metapleure

(except the edges and a small black mark above), clear yellow. Abdomen yellow, the

segments black at the base and apex, the black united by a longitudinal black line on

the first, second, and third segments; on the second segment a black line runs from

near the base of the central line, the former bending down and uniting with the apical

line, thus enclosing two large yellow spaces; the lines on the other segments project

laterally and in the middle; apical segment waved in the centre, bare, impunctate ;

ventral segments black at the edges, the black not continuous on the basal segments

and projecting in the centre on the second, fourth, and fifth.

The Sonoran example quite agrees with the description of Handlirsch. SS. scolopacea

may be distinguished from S. longirostra by the more distinct sculpture; and by the

femora being yellow lined with black, never reddish as in S. longirostra. I believe

that S. scolopacea is a good species.

- BEMBIDULA. 95

BEMBIDULA.

Bembidula, Burmeister, Bol. Acad. Cordova, i. p. 122 (1874) ; Handlirsch, Sitz. der k. Akad. der

Wissensch. Wien, xcviii. p. 474.

In the number of joints in the maxillary and labial palpi, this genus agrees with

Monedula; but it differs from it in the anterior ocellus being linear and transversely

curved, not roundish or reniform. The metathorax is compressed at the sides and

excavated behind; the radial nervure forms with the third transverse cubital nervure

an acute angle; and the eighth ventral segment in the male has three spines. The

genus is only known from North, Central, and South America.

J e e

1. Bembidula diodonta.

Bembidula diodonta, Handl. Sitz. der k. Akad. der Wissensch. Wien, xcviii. p. 485, t. 2. figg. 4, 16°.

Hab. Mexico, Orizaba 1.

VA 2. Bembidula discisa. (Tab. VI. figg. 12, 2; 13, male organ.)

Monedula discisa, Taschenb. Zeitschr. f£. d. ges. Naturw. Sachs. Thiir. xxxvi. p. 267.

Bembidula discisa, Burm. Bol. Acad. Cordova, i. p. 1247; Handl. Sitz. der k. Akad. der Wissensch.

Wien, xcviii. p. 485, t. 2. figg. 10, 18, 17°.

Hab. Mexico, Orizaba (Bilimek*), Cordova (Saussure 4), Valladolid in Yucatan

(Gaumer); GuatemaLa, Senahu in Vera Paz, Paraiso 300 feet (Champion); Panama,

Volcan de Chiriqui 2000 to 3000 feet, David (Champion).—SourH America, Rio

Janeiro !, Rio Grande do Sul, Parana ! 2, Cordova 2.

Antenne black, the scape yellow beneath ; the flagellum with a microscopic pile ;

the third joint twice the length of the fourth. Head closely punctured; the front and

vertex covered with moderately thick and long cinereous or fuscous hair; the face and

clypeus with a whitish pubescence; the orbits broadly in front, narrowly behind, the

clypeus (except a large irregular transverse mark at the base and a small one in front

of this), the labrum, the mandibles (except the tips), and a short narrow line on the

vertex touching the orbits, yellow. Thorax shining, closely and rather strongly and

evenly punctured. Prothorax black, yellow at the top ; two oval spots in front on the |

mesonotum, a line before and one behind the tegule, a small mark on either side of

the scutellum, the postscutellum, a curved line along the edge of the metanotum, the

projecting angles of the latter broadly, and a large mark on the mesopleure, yellow.

There is an interrupted yellow line on the abdominal segments, the lines forming this

becoming shorter and more widely separated towards the apex, that on the penultimate

segment being twice as broad as long; on the last segment are two small marks. Last

segment bearing large punctures, rugose at the base. The basal ventral segment is

almost entirely black ; the others bear black, transverse bands ; the last ventral segment

is entirely black. Legs yellow, the anterior coxe yellow beneath, the four hinder coxe

yellow at the apex; the femora broadly lined above and beneath with black.

96 ; HYMENOPTERA.

A variable and widely-distributed species. Examples of it in the British-Museum

collection are labelled Monedula spinosa, Fabr.

/ 3. Bembidula variegata, (Tab. VI. fig. 14, 2.)

Bembezx variegata, Oliv. Encycl. Méthod. iv. p. 292°.

Bembidula variegata, Handl. Sitz. der k. Akad. der Wissensch. Wien, xcviii. p. 488°.

Monedula dissecta, Dahlb. Hymen. Europ. i. p. 186.

Monedula sericea, Spinola, in Gay’s Hist. fis. y polit. de Chile, Zool. vi. p. 315°.

Hab, Muxico, Orizaba (Bilimek?), Omealca near Orizaba (IZ. Trujillo), Teapa in

Tabasco (H. H. Smith); Guatemata, San Joaquin in Vera Paz (Champion).—Sovuru

America, Venezuela 2, Cayenne !, Brazil 2, Chili ®.

Antenne with the scape yellow beneath ; the flagellum densely covered with a short,

silky, microscopic pile; the third joint twice the length of the fourth. Head finely

punctured ; the front, vertex, and occiput covered with short pale hair; the clypeus

with a silky pile; the orbits broadly in front to the ocelli and narrowly behind, the

space between the antenne, the clypeus (except a somewhat triangular black mark

at the base), the labrum, and the mandibles (except the apices), clear pale yellow.

Thorax shining, minutely punctured; the prothorax yellow, with a broad black band

above ; two longish longitudinal lines on the mesonotum in front, a line along the sides

extending from the pronotum to the scutellum, a line along the base of the scutellum,

the postscutellum, a curved line along the apex of the metanotum, the metanotal

tubercles broadly, a broad line down the centre of the mesopleure, a small mark

beneath the fore wings, and the metapleure (except a black line down the centre), pure

citron-yellow. Abdomen shining, with a broad interrupted yellow band on each

segment and two marks on the apical segment ; a broad black mark on the ventral

segments ; the apical ventral segment entirely black, sparsely punctured, and shining.

Legs clear yellow; the greater part of the trochanters, and a line on the femora and

tibie above, black. |

V 4, Bembidula viduata.

Bembidula viduata, Handl. Sitz. der k. Akad. der Wissensch. Wien, xcviii. p. 491°.

Hab. Mexico, Huastec 1.

/ 5. Bembidula capnoptera.

Bembidula capnoptera, Handl. Sitz. der k. Akad. der Wissensch. Wien, xcviii. p. 497}.

Hab. Norta America, Texas, Kentucky, Georgia—Mexico, Jalisco (Schumann).

V 6. Bembidula burmeisteri. (Tab. VI. figg. 15, 9; 154, apex of abdomen, @ ;

16, male organ; 16a, apical ventral segment, ¢ ; 160, apex of abdomen, ¢.)

Bembidula burmeisteri, Hand. Sitz. der k, Akad. der Wissensch. Wien, xcviii. p. 497°.

BEMBIDULA.—MONEDULA. 97

Coxis posticis in utroque sexu infra in spinam productis; abdominis segmentis 2°-4™ late flavis, sexto rufo-

flavo. 3g 9.

Long. 12-16 millim.

Hab. Muxico!, Navarrete in Tepic (Schumann), Venta de Zopilote 2800 feet, Rio

Papagaio 1200 feet, both in Guerrero (H. H. Smith), Temax in North Yucatan

(Gaumer).

Black ; the inner and outer orbits of the eyes (the former broadly), the clypeus, the

_ Scape beneath, the mandibles at the base, the edges of the labium, the femora more or

less, the tibie, the tegule and tubercles, citron-yellow ; the edges of the pronotum, a

more or less large mark on either side of the scutellum, the metanotum, the edge of

the median segment at the top, the lateral projections, sometimes an irregular narrow

curved line on the first segment, and the other segments, except a narrow black line at

the base (the apical one entirely, except at the extreme apex), yellow. The four

anterior femora are yellow beneath to near the base as well as at the apex, the hind

femora being yellow at the apex only; the tarsi are yellow, with a decided rufous

tinge. Head above covered with long grey hair; the vertex broadly depressed laterally,

opaque, strongly aciculate; clypeus convex, the apex almost transverse. Pro- and

mesothorax (especially above) finely and rather closely punctured. Last ventral

segment indistinctly carinate, laterally with some scattered punctures, the apex sharply

rounded ; beneath keeled in the centre, the sides a little depressed. Hind coxe with

a sharp triangular tooth on the inner side.

In the male the hind cox are toothed as in the female; the yellow marks on the

scutellum and metanotum are much reduced; the curved line on the median segment

is absent; the abdominal segments 2-6 are broadly black at the base; the last

segment is black, with two small yellow marks, punctured at the base, the apex almost

impunctate; the second ventral segment has an elongate tubercle; the antennal joints

are cylindrical, somewhat dilated beneath ; and the anterior tarsi are not dilated.

A variable species. In some examples the yellow marks on the scutellum and

median segment, and also the yellow band on the first abdominal segment, are oblite-

rated; the yellow band on the other segments is much narrowed; and the tibiz are

more or less lined with black behind.

I was somewhat in doubt as to our Mexican specimens being really B. burmeisteri ;

because Handlirsch states that his species agrees with B. fodiens in the form of the

-sixth dorsal plate (that of B. fodiens being figured by him), while it is very different in

our examples. However, Herr Handlirsch has kindly informed me that they are

undoubtedly referable to B. burmeisteri.

MONEDULA.

Bembex, pt., Fabricius, Ent. Syst. ii. p. 247 (1776).

Stictia, Iliger, in Rossi’s Fauna Etrusca, 2nd edit. ii. p. 181 (1807).

BIOL. CENTR.-AMER., Hymenopt., Vol. II., October 1890. 00

PA. Sg

98 HYMENOPTERA.

Monedula, Latreille, Gen. Crust. et Ins. iv. p. 99; Handlirsch, Sitz. der k. Akad. der Wissensch.

Wien, 1887, p. 281.

A well-known genus, confined to the Nearctic and Neotropical regions. It has the

maxillary palpi six- and the labial palpi four-jointed ; the anterior ocellus reniform or

roundish ; and the maxille short, not reaching near to the posterior legs.

V 1. Monedula heros. (Tab. VI. fig. 21.)

Bembex heros, Fabr. Syst. Piez. p. 222°.

Monedula heros, Handl. Sitz. der k. Akad. der Wissensch. Wien, xcix. p. 108°.

Nigra, argenteo-pilosa, labro (medio nigro) maculisque 10 abdominis albidis ; ; alis hyalinis, fere fusco-tinctis.

Long. 23-25 millim.

Hab. Mexico, Ventanas in Durango 2000 feet (Forrer), San Blas in Jalisco, Navarrete

in Tepic (Schumann); Guatemata, Champerico (Champion); Nicaraeua, Chontales

(Janson); Panama (Boucard).—Sovuta America}, Brazil 2, Monte Video ?.

Antenne pruinose, rufous on the underside towards the apex; the third joint nearly

one half longer than the fourth. Clypeus and cheeks covered with a close velvety

pubescence ; the front and vertex densely clothed with rather long cinereous pubescence,

the occiput densely covered with shorter hair. Clypeus laterally at the apex yellowish

and bearing a few scattered punctures; labrum more strongly and numerously punc-

tured in the middle; mandibles piceous behind the teeth, obscurely punctured. Thorax

thickly clothed with fuscous pubescence, which is especially long on the metathorax ;

closely and finely punctured ; the mesonotum opaque, the rest semi-shining ; apex of

the metanotum with a somewhat V-shaped projecting part in the centre, this part finely

rugose, almost opaque, and having a narrow furrow down its middle. Abdomen

shining, minutely punctured, and with a bluish tinge in the centre; the basal mark is

oblique, broad, truncated at the top, rounded and narrowed at the bottom; the next

two marks become narrowed on the lower side, and the apical pair are of nearly equal

width throughout; apical segment covered in the middle with large, elongated,

clearly separated punctures ; the sides coarsely rugose ; the apex rounded; beneath and

laterally it is densely covered with short hair: the second, third, and fourth segments

have a yellow mark on the edges. Legs densely covered with silvery pile, especially

on the tibie and tarsi, which appear white owing to the pubescence; the tibial spines

and the spines on the four hinder tarsi clear white, the anterior tarsal spine blackish ;

metatarsal brush rufous; claws brownish at the base.

J 2. Monedula surinamensis. (Tab. VI. fig. 23, 2.)

Apis surinamensis, De Geer, Mém. Ins. iii. p. 569, t. 28. fig. 1.

Monedula surinamensis, Dablb. Hymen. Eur. i. p. 187 ; Smith, Cat. Hymen. Ins. iv. p. 332°; Handl.

Sitz. der k. Akad. der Wissensch. Wien, xcix. p. 115, t. 1. f. 13°.

Bembez continua, Fabr. Syst. Piez. p. 225.

Stictia continua, Illiger, in Rossi’s Fauna Etrusca, 2nd edit. ii. p. 181.

MONEDULA. 99

Monedula continua, Latr. Gen. Crust. et Ins. iv. +P. 100; Lep. de St.-Farg. & Serv. Hist. Nat. Ins.,

Hymén. iii. p. 287.

Monedula striata, Dahlb. Hymen. Eur. i. p. 493.

Bembex striata, Fabr. Ent. Syst. ii. p. 250; Syst. Piez. p. 226.

Hab. Nicaraeva, Chontales (Belt)—Souta America!, Demerara, Brazil1, Peru 2,

Chili?; AnrittEs, San Domingo |.

8. Monedula signata. (Tab. VI. fig. 22, male organ.)

Vespa signata, Linn, Syst. Nat. 1. p. 952.

Bembex signata, Fabr. Syst. Piez. p. 223; Oliv. Encycl. Méth. iv. P. 290.

Bembyx signata, Fabr. Syst. Ent..p. 361.

Monedula signata, Latr. Gen. Crust. et Ins. iv. p. 100; Lep. de St.-Farg. & Serv. Hist. Nat. Ins.,

Hymén. iii. p. 283; Dahlb. Hymen. Eur. i. p. 185 ; Smith, Cat. Hymen. Ins. iv. p. 331; Guér.

in La Sagra’s Hist. fisica y polit. de Cuba, Zool. vii., Ins. p. 320; Cresson, Proc. Ent. Soc,

Phil. iv. p. 143; Handl. Sitz. der k. Akad. der Wissensch. Wien, xcix. p. 87’.

Stictia signata, Mlliger, in Rossi’s Fauna Etrusca, 2nd edit. li, p. 181; Erichs. in Schomburgk’s

Reisen Brit.-Guiana, p. 589.

Apis vespiformis, De Geer, Mém. Ins. iii. p. 570, t. 28. fig. 3.

Hab. Mexico, Ventanas in Durango, Tres Marias Is., Presidio, Mazatlan (Forrer),

San Blas in Jalisco, Atoyac in Vera Cruz (Schumann), Teapa and San Juan Bautista

in Tabasco (H. H. Smith), Temax in North Yucatan (Gaumer); Britis Honpvuras,

R. Sarstoon (Blancaneaur) ; GuaTEMALA, San Joaquin in Vera Paz, Rio Naranjo

(Champion) ; Nicaragua, Chontales (Janson); Costa Rica, Caché (Rogers).—Sovutu »

America, Colombia, Demerara, Brazil, Peru?; AntinuEs, Cuba 4, Jamaica 2.

Jy Monedula maculata.

Bembex maculata, Fabr. Syst. Piez. p. 222.

Monedula maculata, Dahlb. Hymen. Eur..i. p. 493 ; Hand]. Sitz. der k. Akad. der Wissensch. Wien,

xcix. p. 92, t. 1. figg. 8, 7, 11’.

Hab. Mexico; Honpuras!; ; Pawan, Chiriqui 1.—Soutn America !, Colombia, Vene-

zuela, Guiana, Ecuador, Brazil }, 1

v 5. Monedula punctata. (Tab. VI. figg. 24, male organ; 25, 2.)

Bembyzx punctata, Fabr. Syst. Ent. p. 361. |

Bembex punctata, Fabr. Ent. Syst. ii. p. 248; Syst. Piez. p. 223.

Stictia punctata, Tliger, in Rossi’s Fauna Etrusca, 2nd edit. 1. p. 181.

Monedula punctata, Lep. de St.-Farg. & Serv. Hist. Nat. Ins., Hymén. iii. p. 284; Dahlb. Hymen.

Eur. i. p. 184; Smith, Cat. Hymen. Ins. iv. p. 332 ; Hand. Sitz. der k. Akad. der Wissensch,

Wien, xcix. p. 97.

Bembex maculata, Fabr. Syst. Pies. p. 222 (var.).

Stictia maculata, Erichs. in Schomburgk’s Reisen Brit.-Guiana, p. 589.

Hab. Mexico, Tierra Colorada in Guerrero 2000 feet (A. H. Smith); GuatEmata, San

00 2

100 HYMENOPTERA.

Joaquin in Vera Paz (Champion); Panama, Bugaba 800 to 1500 feet (Champion),

Panama city (Boucard).—Souta America, Demerara, Brazil.

V6. Monedula dives. | |

Monedula dives, Handl. Sitz. der k. Akad. der Wissensch. Wien, xcix. p. 106’. |

Hab. Mexico!.

N 7. Monedula mexicana. oe

Monedula mexicana, Handl. Sitz. der k. Akad. der Wissensch. Wien, xcix. p. 107’.

Hab. Mexico}.

BEMBEX.

Bembyx, Fabricius, Syst. Ent. p. 361 (pt.) (1775).

Bembex, Fabricius, Mant. Ins. i. p. 285; Handlirsch, Sitz. der k. Akad. der Wissensch. Wien, xcv.

p. 280 (1887).

This genus is found in all the zoological regions. It has the maxillary palpi four- and

the labial palpi two-jointed ; the anterior ocellus is linear and transversely curved ; the

apex of the metathorax is transverse or somewhat convex, and not, or hardly, compressed

laterally ; the angle formed by the radial with the third transverse cubital nervure is

obtuse ; and the male has only one spine on the eighth ventral segment.

V 1. Bembex multipicta. (Tab. VI. figg. 17, male organ; 18, 2.)

Bembex multipicta, Smith, Ann. & Mag. Nat. Hist. 4th ser. xii. p. 300°.

Hab. Mexico, Oaxaca 1, Teapa in Tabasco (H. H. Smith); Guatemaa, Torola 1000

feet (Champion).—Sovuta America, Demerara. |

Scape black, shining, yellow beneath; the flagellum microscopically pilose; the

third joint twice the length of the fourth. Head shining, almost impunctate, except

slightly on the vertex; black, with the following parts clear yellow—the orbits

narrowly behind, a pear-shaped mark below the ocelli and a small spot on either side of

it, a mark above the antenne and the antennal tubercles, the orbits and face laterally

(the yellow on the latter becoming more extended towards the antenne, thus narrowing

the central black spot), the clypeus (except two black marks in the centre at the base,

which ends in a round knob), the labrum, and the basal three-fourths of the mandibles ;

covered with long cinereous hair, which is especially long and thick on the front and

vertex. Thorax rather strongly punctured, shining ; the prothorax yellow, with two

broad lines in the middle, and a narrow one on the edge of the pronotum; mesonotum

black, two short lines in front, a line along the edge, and a short mark at the apex

touching the scutellum, yellow ; mesopleure yellow, the sutures and sternum black ; an

irregularly oval mark on either side of the scutellum ; the postscutellum, a line along

the metanotum, and a large mark along the edge and side, yellow. Abdomen black,

BEMBEX.—STIZUS, 101

shining, minutely punctured ; a broad line on either side of the basal segment, a much

broader one, with an elongate broad black mark in the centre, on the second segment,

a curved line on the third, fourth, and fifth segments, and a U-shaped line on the last

segment, clear yellow ; ventral segments broadly yellow at the sides and narrowly so

at their junction; last dorsal segment bearing large, separated punctures, except in the

centre, the sides covered with hairs and bristles, the apex broadly rounded, slightly

incised in the centre; beneath shining and bearing scattered punctures laterally.

Legs clear yellow, the coxe and trochanters for the greater part black, the femora

lined above with black.

| 2. Bembex pallidipicta.

Bembex pallidipicta, Smith, Ann. & Mag. Nat. Hist. 4th ser. xii. p. 300°.

Hab. Mexico}.

V's, Bembex mima.

Bembex mima, Handl. in litt.

Hab. Mexico, Tierra Colorada, Tepetlapa and Venta de Zopilote, all in Guerrero

(H. H. Smith).

V4, Bembex monodonta. (Tab. VI. figg. 20, ¢; 204, male organ.)

Bembex monodonta, Say, in Long’s Second Exped. p. 38351; Complete Writings, i. p. 226.

Microbembex monodonta, Patton, Bull. U.S. Geol. & Geogr. Surv. v. p. 362.

Bembex ciliata, Smith, Cat. Hymen. Ins. iv. p. 329.

Hab. Norta America!, Kansas.—Mexico, Presidio near Mazatlan, Tres Marias Is.

(Forrer), San Blas in Jalisco (Schumann), Atoyac in Vera Cruz (H. H. Smith); GuatE-

MALA, Champerico, Pantaleon 1700 feet (Champion).—Soutn America, Amazons ?.

It is doubtful if this is the Bember ciliata, Fabr. (Syst. Piez. p. 226), nor is it clear

that it is the B. ciliata of Lep. de St.-Fargeau and Serv. (Hist. Nat. Ins., Hymén. iii.

p. 279); Ishould say, however, that it is the B. ciliata of Dahlbom (Hym. Eur. i. p. 488).

Smith’s B. ciliata is certainly conspecific with our insect: I have examined his types.

The species appears to be quite common in Central America.

V 5. Bembex nubilipennis, (Tab. VI. fig. 19, 2.)

Bembex nubilipennis, Cresson, Trans. Am. Ent. Soc. iv. p. 218’.

Hab. Nortu America, Texas —Mexico, Jaral in Guanajuato (Schumann).

STIZUS.

Stizus, Latreille, Gen. Crust. et Ins. iv. p. 100 (1804).

Larra, Smith, Cat. Hymen. Ins. iv. p. 887 (1856).

Bembecinus, Costa, Fauna del Regn. Napoli, Imen. Acul. pt. iii. p. 4 (1859).

Stizomorphus, Costa, loc. cit. p. 7.

102 HYMENOPTERA.

The species from our region belong to Bembecinus, Costa, sec. Patton. They chiefly

differ from typical Stizus, Patton, in two of the terminal joints of the male antenne

being spined, and in the “submedial cell of the posterior wings” being “ narrow,”

‘extending no more than its own breadth beyond the origin of the transverse medial

nervure.” There are two North-American species of Bembecinus, while the section is

also known in Europe, the type being the well-known Stizus tridens, Fabr. ‘Three of

‘our species have the second cubital cellule appendiculate.

A. Second cubital cellule appendiculate.

1. Stizus agilis. (Stizws godmani, Tab. V. figg. 8, head from in front, 84,

antenna, ¢; 86, head from in front, 8¢, antenna, @ .)

Larra agilis, Smith, Ann. & Mag. Nat. Hist. 4th ser. xii. p. 402 (1878) *.

Hab. Mexico, Presidio (Forrer), Atoyac in Vera Cruz (Schumann), Teapa in Tabasco

(H. H. Smith); Guatemata, Teleman in Vera Paz (Champion).—Brazit, Ega’.

Antenne thickened beyond the middle; the scape bright yellow beneath; the

flagellum brownish beneath and microscopically pilose; the third joint a little longer

than the fourth; the spine on the antepenultimate joint thin, straight, that on the

terminal joint much broader, stouter, and slightly curved. Head with scattered shallow

punctures; the vertex and occiput bearing long pale hair; the front and clypeus

densely covered with silvery pubescence; eyes large, converging beneath ; clypeus

broadly onvex, the apex roundly and shallowly curved; labrum broadly rounded ; the

inner orbits, and the head below the antenne, yellow, the clypeus with a broad black

line in the centre. Thorax closely punctured, more strongly so on the median seg-

ment; covered with pale hair, the hair especially thick and long on the median

segment; the sides with a silky pubescence; a line on the pronotum above, the

tegule, a short line along them on the mesonotum, a broad mark on each side of the |

scutellum, the postscutellum, and the teeth on the median segment, bright clear

yellow; there is an oblique fine furrow on either side of the median segment, which

slopes down from it to the teeth rather abruptly. Abdomen shining, with a bluish

tinge; sparsely and finely punctured; covered with pale white hair, the hair longest

on the sides and apical segments; the segments banded with yellow at the apices ;

the last segment strongly punctured, rufous at the apex; the ventral segments densely

covered with pale hair and edged with yellow. Legs black; the knees, a line on the

femora behind, a line on the anterior four tibie in front and on the posterior tibie

behind, the spines and spurs, and the tarsi (except a line on the basal joint behind),

yellow; the tarsi inclining to rufous at the apex.

The example from Presidio has the clypeus black, except at the sides, and there is a

short black line below the antenne, but the scutellum is not marked with yellow

STIZUS. 103

laterally ; otherwise I cannot find tangible characters to separate it from the Guate-

malan form. Some specimens have the tibie broadly lined with yellow, and the tarsi

are sometimes more or less yellow. The amount of yellow on the clypeus and inner

orbits of the eyes also varies, and the former is sometimes entirely yellow; the femora

are sometimes broadly lined with yellow.

The female does not differ much, if at all, in colour from the male.

J 2. Stizus lineatus. (Tab. V. figg. 7,¢; 7a, head from in front ; 7 6, antenna.)

Niger, dense albo-hirtus ; mesonoto flavo bilineato ; segmento mediali flavo nigro lineato; alis hyalinis. ¢.

Long. fere 9 millim.

Hab. Mexico, Atoyac in Vera Cruz (Schumann).

Antenne yellowish beneath ; the scape of a purer yellow than the flagellum; the

flagellum becoming gradually thicker to the eleventh joint; the sixth to the eleventh

joints broader than long; the eleventh with a short, sharp spine at the apex beneath ;

the twelfth joint fully one half longer than the eleventh or thirteenth; the latter

terminating in a sharp spine, which is obliquely bent downwards. Head densely

covered with a silvery sericeous pile and with long pale fuscous hair ; obscurely

pitted and almost shining; narrower than the thorax ; the ocellar region not raised ;

a yellow heart-shaped spot on the inner side of the posterior ocelli; clypeus some-

what convex ; labrum rounded. Thorax silvery-pilose and covered rather closely with

long pale fuscous hair. The edges of the prothorax all round, the tubercles, a

large irregular mark on the mesopleura, incised in the middle above and more

widely so beneath, a large mark in the centre of the metapleura, two narrow

longitudinal lines in the centre of the mesonotum, a broader line along the sides

extending nearly to the tubercles, the tegule, the scutellum, a triangular mark in

the centre of the median segment (and with a black—thick at the base, narrowed at

the apex—line inside of it), the greater part of the sides (the yellow being very wide

on the apex, reaching to the black central line), and the lateral spines, yellow. Median

segment punctured. Abdomen shining, punctured, closely covered with long pale

silvery hair; all the segments banded with yellow at the apex; the black on the

basal segment is incised on either side in the middle, leaving a square black part; on

the second segment the black broadly projects, the black divided in the middle and

behind almost cut off from the basal portion by a yellow interrupted transverse line.

Legs yellow; the coxe, trochanters, femora, and tibie irregularly lined with black. .

N 3. Stizus flavus. (Tab. V. figg. 9, ¢; 9a, head from in front; 96, antenna;

9c, male organ.)

Flavus, fusco-hirtus; flagello antennarum superne, lineis 8 mesonoto, abdominisque apice infra, nigris; alis

hyalinis, nervis nigris. ¢.

Long. 10 millim.

104 HYMENOPTERA.

Hab. Mzxtco, Jalisco (Schumann); Guatemata, Teleman in Vera Paz (Champion).

Antenne thickened gradually to the apex; the third joint about one quarter longer

than the fourth; the third to the sixth joints longer than broad, the seventh to the

eleventh broader than long; the eleventh with a thin curved spine, reaching to the

apical fourth of the twelfth, projecting from the apex on the underside; the twelfth

joint twice the length of the eleventh, curved broadly on the underside; the thirteenth

beak-shaped, ending in a sharp spine. Head punctured, densely covered with stiff

fuscous hair; the clypeus with a silvery pile; ocellar region not raised; the anterior

ocellus with a black dilated mark in front and to the posterior ocelli a black oblique

line runs from the eyes; occiput black; clypeus convex; apex of the labrum subtrans-

verse. Thorax shining, punctured, bearing short fuscous hair; a broad central black

line and two shorter lateral ones on the mesonotum; scutellum with the extreme

base black, the black projecting in the centre as an irregular mark (sharp at the

apex) nearly to the middle; median segment edged with black. Abdomen stout,

shining, punctured, the segments edged with black ; the apical three ventral segments

also black. Legs stout, the femora and tibie thickened ; the tibie sparsely spined, the

posterior pair with a narrow black line behind. The first transverse cubital nervure

straight, elbowed sharply before the middle.

/ B. Second cubital cellule not appendiculate.

4, Stizus moneduloides.

Larra moneduloides, Smith, Cat. Hymen. Ins. iv. p. 346°.

Hab. Nortn America, Florida !—Mexico, Presidio (forrer), Teapa in Tabasco (H. #.

Smith); Guaremaua, San Gerénimo (Champion).

Fam, PHILANTHID.

This well-marked and beautiful family of insects is fairly well represented in Mexico;

but apparently the species become less numerous southwards.

APHILANTHOPS.

Aphilanthops, Patton, Proc. Bost. Soc. Nat. Hist. xx. p. 401 (1880).

In the second cubital cellule not being appendiculate this genus agrees with Philan-

thus ; but differs from it in having the eyes entire and the antenne inserted above the

middle of the face, and also in having the hypopygium margined and forming a well-

marked area as in Cerceris.

Two North-American species have been described.

APHILANTHOPS. 105

1. Aphilanthops marginipennis. (Tab. VII. fig. 1, 3.)

Flavus, thorace flavo et fulvo maculato; pedibus fulvis; alis fere hyalinis, antice fusco-fumatis, stigmate et

costa ferrugineis; area cordiformis leva. d¢.

Long. 11 millim.

Hab. Mexico, Atoyac in Vera Cruz (Schumann).

Kyes slightly diverging beneath. Ocelli almost forming a triangle, separated from

the eyes by more than the length of the third antennal joint, and from each other

by barely the length of the fourth. Clypeus at apex fringed with long fulvous

hair; the middle projecting and armed with two blunt teeth. Third antennal joint

as long as the basal two joints united, and nearly twice the length of the fourth.

The punctuation of the head is moderately coarse; much sparser on the face. The

orbits of the eyes behind the occiput and the back of the vertex are rufous; the oral

region, face, cheeks, inner orbits to the ocelli, and a stripe between the antenne to

near the ocelli are yellow ; the rest of the head is black. The pile is thick and silvery-

white; it is much longer on the face. Mandibles yellow and rufous, black at the apex.

Thorax densely covered with short silvery-white pubescence; coarsely and closely

punctured ; the scutellum sparsely punctured; the metanotum almost impunctate; the

median segment rugosely punctured; the heart-shaped area smooth, shining, slightly

raised, deeply furrowed down the middle, the furrow extending to the end of the median

segment, the apex of which has an obliquely rounded slope. The ground-colour of the

thorax is black; the pronotum above, the tubercles, the metanotum, and two elongated

stripes on the side of the median segment, yellow; the scutellum, tegule, breast, and

an irregular splash on the mesopleure, rufous. Abdomen elongate-oval, a little

longer than the head and thorax united; segments 2-5 furrowed at the base and in

the middle; sparsely punctured, the sixth segment almost impunctate; the basal and

central depressions black, the central inclining to rufous; the rest of the abdomen

yellow, except the pygidial area, which is rufous; the sides margined, slightly curved,

and narrowed gradually to the apex. The ventral segments black and rufous, the

basal segment for the greater part rufous, the others yellow at the apex. ‘The fringe

of hairs on the third and fourth segments occupies the middle three-fourths ; it is pale

fulvous, soft, and silky, each hair being clearly separated from its neighbour and nearly

as long as the segments. On the fifth segment, at its junction with the sixth, in the

middle are two erect, stiff, comb-like, almiost continuous, yellowish processes, which are

black or piceous-black on the top. The ventral segments are sparsely punctured,

furrowed at the base and apex. Legs rufous; the hind tibie with a black line on the

outer side. The cloud in the fore wing occupies the base of the median, the radial,

and the upper part of the cubital cellules. ‘The first recurrent nervure is received

shortly before the basal third of the second cellule; the second in the third cubital

cellule a little less than the length of the top of the second cubital cellule beyond the

second cubital nervure; the latter is curved, the first cubital nervure hardly so.

BIOL. CENTR.-AMER., Hymenopt., Vol. II., October 1890. PP

106 HYMENOPTERA.

2. Aphilanthops punctifrons. (Tab. VII. fig. 2.)

Niger ; facie, maculis thoracis, lineis abdominis, pedibusque flavis ; alis fumatis ; flagello subtus pallide fulvo;

area cordiformis punctata. Q. ,

Long. 15 millim.

Hab. Mexico, Temax in North Yucatan (Gaumer).

Eyes diverging beneath. Ocelli in a triangle, separated from the eyes by the length

of the third antennal joint, and from each other by the length of the fourth. Clypeus

but very slightly convex; the apex produced, rounded, projecting outwardly; the

lateral margin fringed with long yellow hair. Front and vertex rather strongly punc-

tured ; the face and oral region not so strongly and more sparsely. Antennal tubercle

broad, furrowed in the middle, dilated below the antenne, reaching to the base of the

clypeus. The head is clothed with short pubescence; the face sparsely covered with

silvery hair. The face, oral region, cheeks, inner orbits of the eyes to the top of the

antennal tubercle, the antennal tubercle, and the mandibles (except the apex and the

edges of the latter and a spot behind the top of the eyes), yellow; the apex of the

clypeus black. Thorax punctured; the punctures above sparse, at the sides much

closer and coarser ; on the scutellum and metanotum the punctures are more widely

apart than on the mesonotum. ‘The heart-shaped area of the median segment with

large scattered punctures, except on the centre, which is furrowed. Apex of the

median segment obliquely rounded. A spot on either side of the pronotum, the

tegule, a spot on the pleure below them, a spot on either side of the scutellum, a

broad elongated line on the sides of the median segment, and two spots on the heart-

shaped area at the base, yellow. Abdomen longer than the head and thorax united ;

blunt at the base and apex, irregularly covered with large punctures; the second, third,

and fourth segments with a transverse depression at the base and apex. Pygidial area

irregularly reticulated, opaque, the sides margined, broader at the base than at the

apex, the latter rounded, the sides with large punctures ; the lateral fringe moderately

long, golden-fulvous. Incision in the hypopygium reaching to the middle of the

segment, rounded at the base and not much narrowed there; the segment depressed

on either side of the incision. The second ventral segment is depressed on the apical

half, the basal part being considerably higher than it, margined at the base, the margin

being continued out from the middle as a short stout triangular keel. ‘There is a

broad interrupted yellow band on the first abdominal segment ; a narrower continuous

one on the second (widest at the sides), a still narrower, interrupted one on the third, ©

and an elongated mark on either side of the fourth and fifth segments. All the legs

are yellow in front, except on the hinder trochanters. ‘Ihe first recurrent nervure is

received about the length of the top of the second cubital cellule from the first trans-

verse cubital nervure ; the second is interstitial.

CERCERIS. 107

CERCERIS.

Cerceris, Latreille, Hist. Nat. Crust. et Ins. xii. p. 315 (1804).

I have arranged the species according to the form of the clypeus in the female; and

have placed those of which we have no females nearest to the group to which they are

apparently most nearly related.

A. Basal segment of the abdomen ovate, the second campanulate.

1. Cerceris binodis. (Tab. VII. fige. 3, 2; 3a, face; 36, face, lateral view;

3¢, pygidial area; 3d, hypopygium ; 3 e, male organ.) | |

Cerceris binodis, Spinola, Ann. Soc. Ent. Fr. x. p. 117, t. 3. £3 (g)*; Smith, Cat. Hymen. iv.

p. 4642.

Diamma spinole, Dablb. Hymen. Eur. i. p. 225.

Diesmus spinole, Dahlb. loc. cit. p. 502°.

Hab. Mexico, Acaguizotla in Guerrero (H. H. Smith), Cordova (coll. Saussure),

Valladolid in Yucatan (Gaumer); GuateMaua, Sinanja in Vera Paz (Champion).—

‘Soura America, Cayenne !?3, Brazil 2.

The Central-American specimens do not agree quite in coloration with Spinola’s

description, ¢. g. the eyes are not marked with yellow behind, the scutellum wants the

yellow marks, the abdomen is broadly rufous at the apex, and the legs are darker

coloured. Judging, too, by the figure, there is a difference in the shape of the second

cubital cellule. Under these circumstances, it is advisable to give a full description of

our insect :-—

Clypei media pars elevata, triangularis; oculorum margines interni clypeum versus divergentes; segmenti

mediani area cordiformis opaca; abdominis segmento 1° petiolare; nigra, segmento mediani maculis

duabus flavis, abdominis segmentis 5°—7" rufo-fulvis ; alis fusco-hyalinis, antice fumato. 9.

Long. 13-15 millim.

Head moderately coarsely punctured, covered with rather long fuscous hair on the

top, the face with a longish silvery pubescence. Eyes slightly diverging beneath.

Ocelli hardly forming a triangle, separated from the eyes by rather more than the

length of the third antennal joint. Clypeus sharply snout-shaped in the middle, the

apex curved. Mandibles shining, grooved, aciculate at the base, bearing scattered

punctures, and piceous at the apex. Thorax coarsely punctured; the mesopleure at

the apex shining, impunctate, striolated above; scutellum with the punctures fewer

and sparser; on the median segment the punctures are distinctly larger and deeper

than on the mesonotum, but more widely apart. The heart-shaped area of the median

segment obscurely aciculate, indistinctly keeled down the middle. Median segment

roundly curved. Petiole longer than broad; slightly narrowed towards the apex; the

base of the second segment narrow, petioliform, projecting at the apex of the narrowed

part, and becoming gradually widened from thence to the apex; beneath, on the basal

PP 2

108 HYMENOPTERA.

portion, is a short blunt tooth, and on the attenuated middle portion is a longish

curved tooth. Abdominal segments sparsely punctured, except at the extreme base

and apex. Pygidial area shining, irregularly reticulated, narrowed towards the apex,

which is almost truncated. Incision in the hypopygium reaching to the base. The

third antennal joint is one third longer than the fourth ; the fourth and fifth joints are

subequal ; the basal six joints are reddish beneath. The inner orbits of the eyes, the

antennal keel (which is stout), two lines on the collar, a small round mark on either

side of the scutellum, an interrupted line on the metanotum, and two elongated broad

marks on either side of the median segment are yellow. ‘There are three rounded marks

on the apex of the basal part of the petiole, and there is a line in its centre beneath ;

the apex of the petiole and the other segments at the apex are yellow; there is a

brick-red band in front of the yellow apex of the petiole, and the third and following

segments are dull ferruginous. A line on the base of the femora and tibie in front

and the metatarsus, spurs, and spines are white. The male has the clypeus flatly

convex, the apex transverse in the middle; and the pygidial area shining, sparsely

punctured.

The four specimens received do not show any variation in colour. Like C. stemulans,

the species bears a marked resemblance to a Polybia.

B. Second abdominal segment not campanulate.

i. Petiole elongate, distinctly longer than broad.

’ 9. Cerceris simulans.

Cerceris simulans, Saussure, Reise d. Novara, Hymen. p. 87, t. 4. £53 (g)’.

Hab. Mexico, temperate region }.

V 8. Cerceris montezuma,

Clypei media pars convexa, apice producta; oculorum margines interni fere paralleli; segmenti mediani area

cordiformis punctata; nigra, metanoto abdominisque basi flavis; alis fere hyalinis, antice fumatis, stig-

mate ochraceo. 9°.

Long. fere 11 millim.

Hab. Mexico (coll. Saussure).

Eyes slightly converging beneath. Head coarsely punctured; the face covered

thickly with silvery, the front and vertex more sparsely with long fuscous, hair. Ocelli

separated from the eyes by more than the length of the third antennal joint and from

each other by the length of the fourth. Clypeus sharply convex in the middle, the

convex part narrow, and becoming slightly narrowed towards the apex, which forms a

projecting snout; the extreme apex below the snout bidentate. Antenne covered

with a close pile; the first joint as long as the second and third united ; the third more

than twice the length of the second, the fourth hardly twice its length. Mesonotum

CERCERIS. 109

coarsely longitudinally punctured; median segment with the punctures larger, deeper,

and more clearly separated; the heart-shaped area finely and closely punctured,

furrowed down the centre. Pleure coarsely punctured; the hollow below the point

of insertion of the hind wings finely striated. The thorax bearing long hair, fuscous

above, paler on the pleure. Abdomen elongate; the petiole distinctly longer than

broad; shining, sparsely punctured; the abdominal segments punctured like the

median segment at the base, but with the punctures more widely apart; the apical

segments with the punctures finer. Pygidial area elongate, the extreme base

narrowed, the apex rounded, the surface irregularly transversely striated ; the extreme

‘apex depressed ; the lateral hair-fringe thick, pale. Incision in the terminal ventral

segment very short, rounded at the base, not much longer than broad, about one

fourth of the length of the segment, which is closely punctured and depressed in the

centre; the other segments finely punctured ; the third, fourth, and fifth closely covered

with dark fulvous hair. The femora bear longish pale hair; the tibie and tarsi are

closely covered with silver pile. Cubitus elongate; the recurrent nervure received

shortly before the middle. The only coloured parts are the metanotum, the sides

and apex of the petiole, a narrow line on the sides of the second segment, the petiole

beneath, and two spots on the apex of the second ventral segment.

This is a narrower and more elongate species than any other of the genus known from

our region. In the elongated petiole it agrees with C. semipetiolata; but differs from

it in the form of the clypeus, in which it resembles the group of C. chiriquensis, the

clypeus, however, is narrower in the middle than in any species of that section.

ii. Petiole not elongate, broader than long.

a. Clypeus (2) simple, subconvex, the central region not separated from the lateral.

v 4. Cerceris tolteca. (Tab. VII. figg. 4, 9; 4a, clypeus; 46, pygidium ; 4c,

hypopygium.) | |

Cerceris tolteca, Saussure, Reise d. Novara, Hymen. p. 94 (3 9)'.

Hab. Mxxico, Cuernavaca, Chilpancingo and Tierra Colorada in Guerrero (1. H.

Smith), Temax in North Yucatan ( Gaumer).

Eyes parallel. Ocelli not forming a triangle; the posterior pair separated from the

eyes by nearly the length of the second and third antennal joints united, and from

each other by almost the length of the third joint. Clypeus flat, the apex slightly

gaping and with a semicircular incision in the middle. Antennal tubercle compressed,

sharply pointed, elongate, depressed at the base and apex. Head moderately strongly

punctured. The clypeus (except the sides, which are black), the inner orbits of the

eyes to near the top, a line above the antennal tubercles, two oblique marks behind

the ocelli and a larger mark behind the eyes, and the mandibles (except at the apex),

110 . HYMENOPTERA.

yellow. Scape fulvous or blackish, yellow beneath ; flagellum reddish-fulvous beneath ;

the third joint hardly one quarter longer than the fourth and twice the length of the

second, the fourth slightly longer than the fifth. Punctuation of the thorax moderately

strong; an oblique shining, impunctate space beneath the point of insertion of the

hind wings; median segment with a moderately rounded slope; furrowed down the

middle; the heart-shaped area shining, impunctate, furrowed. Punctuation of the

abdomen comparatively weak, and becoming still weaker towards the apex, but

moderately strong at the base. Petiole wider than long. Pygidial area elongate,

slightly narrower at the base than at the apex, the latter rounded; the centre rugose,

and covered with pale depressed hair; the sides coarsely punctured. Beneath, the last

segment is stoutly keeled laterally and clothed with long pile. The apical three-fourths

of the petiole, a large mark on the side of the second segment, the third segment

(except at the base and apex), the apex of the fourth and fifth segments, and the sixth

segment at the side are yellow. Legs yellow; the coxe, trochanters, and a short line

on the femora, black. The pubescence is short and silvery.

In the male the punctuation is stronger; the face below the antenne is entirely

yellow—there is only a small mark behind the eyes and none behind the ocelli; the

base only of the flagellum is dull rufous; the clypeus is slightly convex, the apex

produced into a rounded point and bordered with long white hair; the second abdo-

minal segment wants the yellow mark and the band on the third’ segment is much

narrower; the pygidial area bears large, widely separated punctures, the sides bulge

out slightly in the middle, and the apex is almost truncated, projecting at the corners ;

the ventral segments are irregularly banded with yellow; the femora bear more black ;

and the coxe and trochanters are yellow beneath.

Length 11-12 millim.

The scutellum and metanotum may have the yellow markings greatly reduced, and

the two marks on the median segment may be absent, as also the marks on the side of

the second abdominal segment; the petiole may be black; and the legs vary in the

amount of black they bear. |

~ 5. Cerceris strigosa. (Tab. VII. figg. 5,9; 5a, head; 5 64, clypeus; 5c, pygi-

dium; 5d, hypopygium. ) |

Clypeo convexo, apice truncato; oculorum margines fere paralleli; area cordiformis strigosa; nigra, facie,

linea pronoti, metanoto, abdominis segmentis marginibus apicalibus, tibiis, tarsisque flavis; alis fere

hyalinis, antice fulvis, stigmate fulvo. 2.

Long. 8 millim.

Hab. Mexico, Ciudad in Durango 8100 feet (Forrer). -

Antenne black, the apical joint fulvous beneath ; the third joint one quarter longer

than the fourth. Eyes almost parallel. Ocelli hardly forming a triangle, the posterior

pair separated from the eyes by more than the length of the third antennal joint, and

CERCERIS. 111

by less than twice the length of the second. Clypeus convex, projecting gradually to

the apex, which also becomes narrowed; the apex almost truncate. Antennal keel

gradually brought to a point, almost reaching to the base of the clypeus. Head coarsely

rugosely punctured, covered, particularly on the top, with long fuscous hair; black,

the cheeks and clypeus yellow. Thorax rugosely punctured, the base of the meso-

notum and the scutellum rugosely striolate; the propleure with some stout striations ;

basal area of the median segment well defined, closely longitudinally striated, the

centre furrowed. The thorax covered with long fuscous hairs. A line on the pro-

notum, the tegule, and metanotum yellow. Petiole convex, a little longer than wide,

bearing longish fuscous hair and scattered punctures; a somewhat triangular fovea at

the apex. Abdominal segments with scattered punctures in the middle; the base and

apex aciculate. Pygidial area narrowed at the base, the apex rounded, irregularly

wrinkled ; hypopygium with the incision wide, but somewhat longer than broad ;

lateral bristles golden-fulvous ; the sides of the apical segment coarsely punctured, the

apex aciculate; ventral surface densely covered with fuscous pubescence; two marks

on the petiole and a broad band on segments 2-4 yellow. The knees, the four

anterior tibie and tarsi, the hind tibie (except at the apex), and the base of the hind

tarsi yellow. First recurrent nervure received a little beyond the centre of the cellule.

The male has the first joint of the antenne shorter than the third, which is not

much longer than the fourth; the clypeus broadly convex, but not strongly so, the

apex broad, almost truncate ; the pygidial area with large punctures, shining, covered

with longish, soft, white hair.

J 6. Cerceris maximiliani, (Tab. VII. figg. 6,9; 6a, clypeus; 6 6, pygidium ;

6c, hypopygium.)

Cerceris maximiliani, Saussure, Reise d. Novara, Hymen. p. 94(?)’.

flab. Mexico, Chilpancingo and Venta de Zopilote in Guerrero, Orizaba, Atoyac in

Vera Cruz (H. H. Smith), Eastern Cordillera1, Temax in North Yucatan (Gaumer) ;

GuatTEeMALA, Senahu in Vera Paz (Champion); Panama, Bugaba (Champion).

We give a fresh description from the specimens before us:—

Clypei media pars convexa, margine apicali fere dentato; oculorum margines interni fere paralleli; area

cordiformis aciculata; nigra, abdominis segmentis 3°-6™ fulvo marginatis ; alis flavo-hyalinis, antice flavo-

fumato. 9.

Long. 12 millim. .

Eyes slightly diverging beneath. Ocelli separated from the eyes by almost the

length of the second and third antennal joints united; the hind pair separated from

each other by the length of the fourth joint. Antennal keel large, nearly as long as

the basal joint of the antenne, moderately acute. Clypeus moderately convex, hardly

projecting in the middle; the apex with a shallow broad curve, scarcely forming an

112 HYMENOPTERA.

incision. The third joint of the antenne not one quarter longer than the fourth,

which is nearly equal in length to the fifth ; the flagellum more or less rufous beneath.

The vertex sparsely, the face and cheeks densely, covered with silvery or golden hair,

and coarsely punctured. Thorax coarsely punctured, almost as strongly as the head ;

the median segment, as usual, having the punctures larger and more widely separated ;

the heart-shaped area of the median segment aciculate, channelled in the middle.

Median segment short, abruptly rounded, almost perpendicular at the apex. Petiole

wider than long, bearing large widely separated punctures, shining; the other abdo-

minal segments more opaque, densely covered with a silvery pile, and hardly so strongly

punctured as the thorax. Pygidial area rugose, narrowed and rounded at the apex ;

the outer margin fringed with long stout hairs, which form brushes. Penultimate

ventral segment depressed largely in the centre ; the apex raised and projecting in the

middle; the incision in the hypopygium very short. A line on either side of the

pronotum, the metanotum in the middle, and the third, fourth, and fifth abdominal

segments broadly at the apex, fulvous-yellow ; the apical segment rufous, blackish at

the apex, the sides yellow. The legs densely covered with silvery pile; the tibie

white in front, the spines being also white.

The male has the inner orbits broadly, the clypeus (more or less), a curved mark

behind the ocelli and a smaller one behind the eye near the top, a mark on either side

of the scutellum, the metanotum (more or less), and two small marks on the apex of

the petiole, yellow; and the bands on the abdominal segments are broader and of a

clearer yellow, the fulvous colour being almost absent. The fore tibiz and tarsi are

for the greater part yellow; the sculpture is stronger and coarser than in the female ;

the clypeus slightly gapes and is roundly incised; the pygidial area is covered with

long white hair; and the wings are hardly so yellow, in some specimens having a

fuscous tinge, especially along the fore margin. The relative lengths of the antennal

joints are as in the female. Length 9-12 millim.

b. Clypeus ( 2 ) convex, nose-shaped, narrowed towards the apex, not free in the centre,

the apex obliquely truncated ; the thorax marked largely with yellow.

: 7. Cerceris aureo-facialis.

Nigra, genx, lineis pronoti, tegulis, metanoto, abdominis segmentisque 2°-6™ late, flavis; alis flavo-hyalinis,

antice fumatis, stigmate ochraceo ; area cordiformis striolata.

Long. 9 millim.

Hab. Mexico, Orizaba (H. H. Smith).

3. Eyes almost parallel. Hinder ocelli separated from the eyes by somewhat more

than the length of the third and from each other by the length of the fourth antennal

joint. Head rather strongly punctured; clypeus broadly triangularly convex in the

middle, and, like the cheeks, densely covered with golden, the vertex and front with

CERCERIS. 113

long fuscous hair ; the apex of the clypeus without teeth. Thorax more strongly punc-

tured than the head. The heart-shaped area of the median segment shining, coarsely

striolate. Abdomen strongly punctured; petiole nodose; pygidial area shining,

narrowed to the apex, and with large punctures. The basal ventral segment is punc-

tured; the others are aciculate, and covered densely with golden pubescence, the apical

segments with white pubescence. Cubitus almost triangular, the recurrent nervure

received before the middle. The third antennal joint is nearly three times, the fourth

twice, the length of the second. A broad triangular mark on the cheeks, an inter-

rupted line on the pronotum, the tegule, the metanotum, and a broad band on the

abdominal segments 2-6, ochreous-yellow ; flagellum rufous beneath towards the base ;

the four anterior tibie and tarsi testaceous ; the hind calcaria yellowish. |

Apparently nearly related to C. marimiliant; but has all the abdominal segments

(except the petiole) yellow, and the heart-shaped area of the median segment striolated.

y 8. Cerceris geniculata. (Tab. VII. figg. 7, head, 2; 7a, clypeus; 76, ditto

from the side.) |

Nigra, facie, basi mandibularum, lineis duabus pronoti, scutello, maculis duabus segmento mediali, margi-

nibus abdominis segmentis 1°, 3°, 4°, 5°, tibiis tarsisque anterioribus, flavis; alis hyalinis, antice fusco,

stigmate sordide fulvo. 9.

Long. 10 millim.

Hab. Mexico, Cuautla (coll. Saussure).

Eyes slightly converging beneath. Clypeus convex in the centre, the apex trans-

verse, five-dentate. Hinder ocelli separated from the eyes by somewhat less than the

length of the second and third antennal joints united and by the length of the third

from each other. Head closely rugosely punctured, shortly pilose; a keel runs down

- from the ocelli; the cheeks covered densely with silvery pubescence. Third antennal

joint shorter than the first and not much longer than the fourth. ‘Thorax strongly

punctured, the punctures on the mesonotum longer than broad, elongate ; on the median

segment they are round and much deeper. The heart-shaped area of the median seg-

ment smooth, punctured at the edges; middle of the metapleura smooth, impunctate,

shining ; metanotum punctured. The pubescence on the thorax is short, close, and

fuscous in colour. Abdomen with the punctuation closer and not so strong as on the

thorax; petiole short, much broader than long. Pygidial area slightly and roundly

narrowed at the base, the apex rounded; rufous, darkened at the base, irregularly

transversely striolate. Apical ventral segments densely pilose. Legs covered with a

close, fine, silvery pubescence ; the tibial and tarsal spines glistening white.

Nt 9. Oerceris feralis.

Long. 7-73 millim.

Hab. Mexico (coll. Saussure).

BIOL. CENTR.-AMER., Hymenopt., Vol. II., October 1890. QQ

114 HYMENOPTERA.

3. Eyes slightly converging beneath. Hinder ocelli separated from the eyes by fully

the length of the third antennal joint and by a somewhat less distance from each other.

Clypeus in the middle convex ; the apex rounded, projecting, and without teeth. The

hair on the head is long and griseous; the punctuation very coarse. Mesonotum and

mesopleure very coarsely punctured ; the propleure shining, impunctate; the heart-

shaped area of the median segment not clearly defined, strongly punctured ; the median

segment bearing large, deep, roundish punctures. Abdomen strongly punctured ; pygi-

dial area shining, marked with some large punctures, slightly narrowed at the base, the

apex almost transverse. The face, two lines on the pronotum, the tegule in front, the

metanotum, two marks on the median segment, a broad band on the first and third,

and a narrow band on the fourth to the sixth abdominal segments, a mark on the basal

ventral segment, and a complete band on the second and third, the four anterior tarsi,

the four anterior tibie in front, and the posterior tibie at the base, clear yellow.

Wings almost hyaline, the cubital and radial cellules clouded ; stigma sordid fulvous ;

the recurrent nervure in the second cubital received before the middle, near the basal

third. Antenne for the greater part rufo-testaceous beneath.

J 10. Cerceris chiriquensis. (Tab. VII. figg. 8, clypeus, 9; 8a, pygidium; 8 4,

hypopygium.)

Clypei media pars convexa, margine apicali depresso; oculorum margines interni fere paralleli; area cordi-

formis leva, fere punctata ; orbitis oculorum, scutello, metanoto, segmento mediali, petiolo, apice abdo-

minisque 3° segmento, flavis; alis fere hyalinis, antice fumatis.

Long. 12 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Eyes a little converging beneath. Ocelli separated from the eyes by the length of

the third antennal joint and from each other by the length of the fourth, almost

forming a triangle. Face convex, projecting at the apex into a snout; from it the

clypeus retreats towards the direction of the base of the legs, and is slightly concave in

the middle. Antennal tubercle elongate, compressed, acute. Head above coarsely

rugose, below the antenne aciculate, with scattered punctures. Third antennal joint

one half longer than the fourth. Front and vertex with long fuscous hair; face,

cheeks, and clypeus with a silvery pubescence. ‘Thorax rugosely punctured, the

punctures running into reticulations on the mesonotum; scutellum with scattered

punctures; the heart-shaped area of the median segment shining, impunctate, its

sides foveolate; the oblique furrow on the mesopleure distinct, deep, but not very

wide. Median segment with a gradual rounded slope. Petiole wider than long,

marked with scattered punctures; the other segments with a moderately strong punc-

tuation at the base, but it becomes weaker towards the apical segment. Pygidial

area widening out at the middle; at the base transversely rugose; the rest with

clearly-separated striz ; the apex transverse ; the sides aciculate, bearing large punc-

CERCERIS. | 115

tures. Hypopygium aciculate; a small triangular incision at the apex, with a

clearly-defined raised border; behind this it is depressed. The abdomen is more than

twice the length of the thorax. The inner orbits of the eyes broadly, the centre of

the clypeus, the scape beneath, the pronotum above, the scutellum, the metanotum,

the greater part of the median segment, a line down the side, the petiole, and a band

on the third segment, clear yellow. The anterior four tibie and tarsi, a line on the

femora in front, and the spurs obscure yellow ; the knees testaceous; the tarsal spines

fulvous. Wings fusco-hyaline, the apex smoky, the stigma dark fuscous; cubitus elon-

gate, the recurrent nervure received quite close to the middle.

V 11, Cerceris flavo-maculata. (Tab. VII. fig. 9, 2.)

Clypei media pars convexa, margine apicali depresso; oculorum margines interni paralleli; area cordiformis

punctata, laterali rugosa; nigra, clypeo, oculorum margines, scutelli maculis duabus, metanoto, segmento

mediali maculis 4, apice petioli et segmento 3°, flavis; alis fere hyalinis, antice fusco-fumato. 9.

Long. 7 millim.

Hab. Costa Rica, Rio Sucio, Caché (Rogers).

Eyes nearly parallel. Ocelli almost in a triangle; the posterior pair separated from

the eyes by a little more than the length of the third antennal joint, and by nearly the

same length from each other. Third antennal joint nearly one half the length of the

fourth. Clypeus broadly convex, projecting gradually to the apex, which projects

obliquely over the labium. Head above the antennez rugosely punctured ; below it

aciculate, marked with scattered punctures. Thorax rugosely punctured ; the punctures

on the median segment large and deep; the heart-shaped area rugosely striolate laterally,

the centre aciculate, and with a narrow not very distinct central furrow; scutellum

convex. Mesopleural furrow not very distinct; propleura aciculate, hollowed, with a

few striee in the centre; the hollow on the metapleure wide and deep, slightly aciculate.

Median segment with a gradual rounded slope. Abdomen not much longer than the

head and thorax united, strongly punctured throughout. Pygidial area straight ;

aciculate, the base with a few large punctures; hollowed towards the apex; slightly

narrowed at the base; the apex almost transverse. Hypopygium with the incision

extending to the basal third; sharply triangular at the base. ‘The clypeus, the inner

orbits of the eyes, the scape beneath, a small mark behind the eyes, a broad interrupted

line on the pronotum, a mark on either side of the scutellum, the metanotum, an

oblique mark on either side of the apex of the heart-shaped area, a stripe down the side

of the median segment, the sides and the greater part of the petiole above,.a narrow

band on the third segment, a much narrower one on the apex of the fourth and fifth

segments, and the second and third ventral segments at the apex, clear yellow; the

greater part of the pygidial area fulvous. All the femora at the apex, the tibie in

front, and the anterior four tarsi in front, white ; the spurs and spines pale testaceous.

QQ 2

116 HYMENOPTERA.

The male has the clypeus convex, but not largely so, rounded at the apex, the

extreme middle of the apex with a small projection, apparently incised ; rugosely

punctured. Pygidial area finely and irregularly punctured. The clypeal projections,

the antennal tubercle, the scutellum entirely, the metanotum, two oblique marks on

the middle of the median segment and a small irregular mark on the side, the greater

part of the petiole, an interrupted band on the second segment, a well-marked one on

the fourth, a narrower one on the fifth, and a still narrower one on the sixth, yellow.

Legs as in the female.

12. Cerceris otomia. (Tab. VII. fig. 10, 2.)

Cerceris otomia, Saussure, Reise d. Novara, Hymen. p. 99 (¢ ¢)’.

Hab. Mexico, Zinapecuaro in Michoacan (Saussure!), Eastern Cordillera -(Sumi-

chrast 1), Mexico city, Atoyac and Fortin in Vera Cruz (H. H. Smith).

The triangular snout-shape of the clypeus, obliquely truncated beneath (the truncation

is white), distinguishes this species. C. marginata has the centre of the clypeus

similar in form, but much narrower, while the body is entirely black, without any

markings whatever.

\ 18. Cerceris flavida.

Long. 7 millim.

Hab. Mexico, Cordova (coll. Saussure).

Eyes slightly diverging beneath. Hinder ocelli separated from the eyes by the length

of the second and third antennal joints united, and from each other by the length of the

fourth. Third antennal joint twice the length of, the fourth hardly one half longer

than, the second. Clypeus in the middle sharply convex; the convex portion trian-

gular, gradually (but slightly) produced to the apex, from which it slopes down obliquely.

Punctuation of the head moderate; there is a transverse depression behind the ocelli;

the hair is longish and griseous. Punctuation of the mesonotum and median segment

weaker and more scattered than on the head; the mesopleure coarsely rugose ; the

heart-shaped area of the median segment impunctate, with a crenulated furrow down

its centre; the pleure densely covered with long griseous hair. Abdomen shining; the

punctuation as on the mesonotum; the petiole as long as broad; pygidial area

elongate, narrowed at the base and apex, the surface rough; lateral hair-fringe pale,

moderate; incision in the hypopygium short, not reaching to the middle, the hypo-

pygium finely and closely punctured. The face (except the oblique lower part of the

clypeus), an interrupted line on the pronotum, the tegule, the metanotum, a line on

all the abdominal segments (except the last), two lines on the third and fourth ventral

segments, the apex of the femora, and the tibiz and tarsi, yellow; the apex of the

CERCERIS. . 117

hinder tibie marked with black, the tarsi infuscated. Wings almost hyaline; the

second transverse cubital nervure obsolete, the cubitus being thus continuous with the

third cubital cellule.

An example, which is apparently the male of this species, has the clypeus flattish,

the apex with three blunt, short, indistinct teeth; the head coloured as in the female ;

the scape yellow beneath; the median segment with two marks; the yellow on the

petiole broader and interrupted ; the legs yellow, with the femora more or less marked

with black at the base or apex.

' 14. Cerceris marginata. (Tab. VII. figg. 11, clypeus, 2; 11 a, pygidium;

11 6, hypopygium.)

Clypei media pars elevata, margine apicali triangulari, dentato; oculorum margines interni paralleli; area

cordiformis rugoso-punctata; nigra, petiolo ex parte sordide flavo; alis fuscis, antice fumato. 92.

Long. 9 millim.

Hab. Costa Rica, Volcan de Irazu 6006 to 7000 feet (Rogers).

Eyes slightly converging beneath, not reaching to the top of the head. Ocelli in a

triangle, separated from the eyes by nearly the length of the second and third antennal

joints united, and from each other by the length of the second. Clypeus broadly

carinate in the middle, projecting at the apex, where it ends in a blunt tooth; looked

at from above it appears triangular. Antennal tubercle short, sharp, compressed. The

punctuation of the head is coarse and runs into reticulations. The third antennal

joint is one third longer than the fourth. Thorax coarsely punctured, the punctures

running into reticulations; the heart-shaped area of the median segment longitudinally

striolated; median segment with an obliquely rounded slope. Petiole longer than

broad. Pygidial area rugose, almost rounded at the apex. Apical ventral segment

flat, transverse at the apex, coarsely punctured; the spines long, stout, acute at the

apex. ‘The antennal area is rufous beneath; the inner orbits of the eyes and the sides

and apex of the petiole are yellowish-white.

The affinities of this species are clearly with C. otomia; but the very different form

of the clypeus and hypopygium serves readily to distinguish the two.

c. Clypeus (2) subconvex, the apex directed inwardly, and forming two

leaf-like plates.

. 16. Cerceris mexicana. (Tab. VII. figg. 12, 9; 12a, head; 124, clypeal

plates.)

Cerceris meaxicana, Saussure, Reise d. Novara, Hymen. p. 101, t. 4. fig. 59 (¢ ¢)*.

Hab. Mexico, Tampico}, Cuautla1!, Teapa in Tabasco (H. H. Smith), Temax in

North Yucatan (Gaumer).

118 HYMENOPTERA.

16. Cerceris huastece. (Tab. VII. figg. 13, head, 9; 13a, clypeal plates.)

Cerceris huastece, Saussure, Reise d. Novara, Hymen. p. 102, t. 4. fig. 60 (2 )’.

Hab. Mexico, Chilpancingo in Guerrero 4600 feet (H. H. Smith), Tampico 1,

-. 17. Cerceris semipetiolata. (Tab. VII. figg. 14, head, 2 ; 14 a, clypeal plates ;

14 6, pygidium; 14 ¢, hypopygium.)

Cerceris semipetiolata, Saussure, Reise d. Novara, Hymen. p. 88 ( 5)’.

Hab. Mexico, Orizaba 1, Cordova (coll. Saussure).

The clypeus in the female is broadly and roundly convex; the apex sharply oblique,

and bearing two leaf-like expansions as in C. mexicana; the eyes are parallel; the

hinder ocelli are separated from the eyes by the length of the third antennal joint, and

from each other by less than the length of the fourth joint; the head is coarsely

punctured ; the clypeus and cheeks are densely covered with silvery hair; the petiole

is slightly shorter than in the male, but still longer than broad; the pygidial area is

not narrowed at the base, and but slightly so towards the apex; the surface is trans-

versely rugose ; the incision in the hypopygium does not reach to the middle, and is

somewhat longer than wide. The cheeks in the middle are pale yellow; the clypeal

plates being also of this colour. | |

The clypeus in the male is broadly convex in the middle; the apex is transverse, with

a very small tooth in the centre. In both sexes the antenne are rufous beneath, the

apical joint being entirely rufous.

In having the apex of the middle part of the clypeus divided into two leaf-like

expansions, this species agrees with C. mexicana and C. huastece ; but the clypeus is

more roundly convex, the apex, too, being more sharply oblique so as to be almost

hidden when looked at directly from the front; the petiole, also, is longer.

. 18. Cerceris zapoteca.

Cerceris zapoteca, Saussure, Reise d. Novara, Hymen. p. 89(¢)'.

Hab. Mexico, Tampico}.

d. Clypeus (2) raised in the centre, usually flat, but not or hardly free from the sides.

19. Cerceris obsoleta. (Tab. VII. figg. 15, 2; 15a, pygidium ; 15, hypopy-

gium.)

Clypei pars media convexa, margine apicali leviter emarginato; oculorum margines fere paralleli; area

cordiformis leva, margine laterali foveato; nigra, maculis duabus scutelli, metanoto, apice abdominisque

1° et 3° segmentis, flavis; alis fortiter fumatis. 9°.

Long. 9-10 millim.

- Hab. Muxico, Teapa in Tabasco (H. H. Smith).

Eyes parallel. Ocelli not forming a triangle, and separated from the eyes by fully the

CERCERIS. 119

length of the second and third antennal joints united, and from each other by the length

of the third. Clypeus broadly convex, projecting, and narrowed towards the apex, the

apex with a rounded shallow incision, the sides rounded. Antennal tubercle acutely

pointed, wider towards the apex. Punctuation of the head coarse, especially on the

vertex ; the hair on the vertex longish and sparse; the pubescence on the face and oral

region close and silvery. Third antennal joint hardly one quarter longer than the

fourth, and shorter than the first. Thorax very coarsely punctured; the oblique

furrow on the mesonotum obsolete; the heart-shaped area of the median segment not

defined, except by six large oblong foveze, which are only separated from the punctures

of the median segment itself by their larger size. Median segment with a gradually

rounded slope, without a clearly-defined furrow, and the punctures on it much larger

than those on the mesonotum. Abdomen strongly punctured throughout; the petiole

much wider than long. Pygidial area rugosely punctured, particularly at the base,

wider at the apex than at the base, the latter transverse, the former roundly projecting

in the middle; the sides have large, widely separated punctures. The incision in the

apical ventral segment is narrowed, reaches to near the basal third of the segment, and

is rounded at the base; the lateral teeth are stout. The flagellum is reddish-fulvous

beneath; the inner orbits of the eyes, two lines on the pronotum, a mark on either

side of the scutellum, the metanotum, a band on the petiole, and another on the apex

of the third segment, yellow. The femora, tibiz, and tarsi are obscure fuscous-yellow

in front.

20. Cerceris montivaga. (Tab. VIL. fig. 16, 2.)

Hab. Mexico, Chilpancingo in Guerrero 4600 feet (H. H. Smith).

Closely related to G. obsoleta, but smaller (7 millim.); the central part of the clypeus

is broader, flatter, and not so much narrowed towards the apex; the clypeus and cheeks

are densely covered with silvery pubescence, which hides the surface completely; the scape

is clear yellow beneath ; the punctuation of the head is much closer; the heart-shaped

area of the median segment is aciculate and wants the fovee ; the pygidial area is longer

and narrower, and not narrowed at the base; the incision in the hypopygium is very

much shorter, this being not much longer than broad; the second segment is broadly

yellow, the third segment without yellow, and the fourth narrowly lined with it. In

other respects agreeing with C. obsoleta.

“21. Cerceris smithiana, (Tab. VII. figg. 17,2; 17a, head; 17, clypeus;

17 ¢, pygidium; 17 d, hypopygium.) |

Long. 8 millim.

Hab. Mexico, Atoyac in Vera Cruz (H. H. Smith).

2 . Eyesa little converging beneath. Hinder ocelli separated from the eyes by nearly the

120 | HYMENOPTERA.

length of the second and third antennal joints united, and from each other by the length

of the fourth. Middle of the clypeus projecting gradually, and becoming narrowed to

the apex, broader than long ; the apex with three minute, blunt, indistinct teeth. The

entire head (including the clypeus) coarsely and strongly punctured ; the cheeks slightly

and the sides of the clypeus densely covered with fulvous-silvery pubescence. Mesonotum

coarsely longitudinally punctured ; the pleura and median segment with larger, rounder,

deeper, and more clearly separated punctures, the longitudinal furrow in the mesopleure

distinct; the heart-shaped area finely transversely striated, widely furrowed down the

centre. Abdomen covered almost uniformly with large punctures. Pygidial area elon-

gated, hardly narrowed at the base, but becoming gradually narrowed to the apex; the

surface opaque, apparently alutaceous ; the lateral hair-fringe black. The incision in the

hypopygium wide, but longer than broad, reaching to the middle. Antenne subclavate,

the third joint about one half longer than the fourth. Tibie and tarsi covered with a

silvery pubescence; the tibial spines cream-coloured. Wings smoky, much darker in

the fore half; the stigma dark fuscous; cubitus with the nervures curved; the recur-

rent nervure received shortly before the middle. The antenne are rufous beneath, the

apical joint being also rufous above. There is a yellow line along the middle of the

eyes on the inner side; a complete line on the pronotum, sometimes a mark on the

pleure beneath the tegulz, the scutellum, metanotum, a mark on either side of the heart-

shaped area, a broad band on the petiole, a band on the second segment (much wider

at the sides), a narrow line on the fourth segment, a still narrower one on the fifth, and

a line on the second ventral segment, yellow; the four anterior knees and tibie in front

and the tarsi are rufo-testaceous.

A near ally of C. montivaga; the middle of the clypeus becomes very distinctly

narrowed towards the apex, the raised part, too, being longer, and not covered densely

with silvery pubescence; the wings are much darker coloured; the heart-shaped area

of the median segment is striated; the pygidial area is longer and narrower; and the

metanotum and median segment are marked with yellow.

22. Cerceris subpetiolata. (Tab. VII. figg. 18, clypeus, 2; 184, pygidium ;

18 6, hypopygium).

Cerceris subpetiolata, Saussure, Reise d. Novara, Hymen. p. 95 (3 ?)’.

Hab. Mexico, Tampico 1, Eastern Cordillera!, Atoyac in Vera Cruz (H. H. Smith);

GuaTEMALA, San Gerénimo (Champion).

I give a renewed description :-—

Clypei pars media fere libera, margine apicali bidentato ; oculorum margines paralleli; area cordiformis fere

aciculata, sparse punctata; nigra, apice segmento secundo, basique tarsorum flavis; alis fusco-hyalinis,

antice fortiter fumatis.

Long. 11 millim.

Eyes parallel. Ocelli not forming a triangle, separated from the eyes by nearly the

CERCERIS. 121

length of the second and third antennal joints united, and from each other by less than

the length of the third joint. Clypeus subconvex, the sides projecting, especially at the

apex, straight, and continued as stout teeth beyond theapex. Antennal tubercle elongate,

sharply pointed, depressed at the base and apex; third antennal joint one quarter

longer than the fourth. Head coarsely punctured, large, well developed behind the eyes,

sparsely covered with long pale hair; the oral region thickly clothed with silvery pubes-

cence. ‘Thorax subopaque, clothed with short pubescence, strongly punctured; meso-

sternum with a stout tooth projecting obliquely backwards, and there is a short tubercle

in front of it, and a blunt tooth at the apex. Median segment with a gradual rounded

slope, the heart-shaped area semiopaque, bearing a few large punctures laterally, and with

a shallow crenulated furrow in the centre. Petiole longer than broad, gradually bulging

out slightly in the middle, and clearly separated from the second segment. Contraction

at the apex of the second segment wide. Pygidial area elongate, narrow, of nearly

equal width at the base and apex, bearing large punctures, irregularly transversely

striolate, and covered with fuscous depressed pile; the apex is rounded ; the sides bear

large punctures, and are fringed with stout pale projecting hairs; beneath, the ventral

segment is carinate in the middle, incised at the apex, and projects into stout converging

teeth. The punctuation on the abdomen is strong; the pubescence is sparse, except

on the apical segment. The base of the mandibles and the scape beneath are yellow;

the flagellum beneath and the basal three joints of the antenne above are rufous. ‘The

anterior and middle tibiz are obscure white in front; the spines and metatarsus are

white; the spurs and claws are rufous. The second abdominal segment beneath is

for the greater part yellowish-white ; the sides and apex above, a narrow line on the

apex of the fourth, and an obscure line on the fifth segment are yellow.

The flat, not rounded, centre of the clypeus, with the apex transverse and toothed (or

at least projecting), distinguishes this species from its allies; the toothed mesosternum

separates it from C. obsoleta, &c.

Apparently not uncommon.

23. Cerceris truncata. (Tab. VII. figg. 19, head, 19 a, clypeus, 19 4, pygi-

dium, 19¢, hypopygium, ?; 20, head, 20 a, pygidium, 206, hypopygium, ¢ .)

Clypei pars media libera, margine apicali truncato; oculorum margines fere divergentes; area cordiformis

aciculata; macula clypeo, oculorum orbitis, maculis duabus scutello, metanoto, maculis tribus segmento

mediali, abdominisque segmentis 1°, 2° et 4° margine apicali flavis ; alis fuscis, anticis fortiter fumatis. 9.

Long. 9 11, ¢ 8 millim. :

Hab. Mexico, Temax in North Yucatan (Gawmer).

Eyes slightly diverging beneath. Hinder ocelli separated from the eyes by a little

more than the length of the third antennal joint, and from each other by the length of

the fourth. Head rugosely punctured, the face not quite so strongly as the vertex.

Clypeus free at the apex, not projecting very much, the apex truncated, the projecting

BIOL. CENTR.-AMER., Hymenopt., Vol. II., December 1890. RR

VA aq

122 HYMENOPTERA.

part broader than long. Third antennal joint more than one-half longer than the

fourth, and nearly as long as the first. Thorax strongly punctured; the propleuree

rugosely punctured; mesopleural furrow indistinct; the heart-shaped area aciculate,

the central furrow crenulated; the median segment with a semiabrupt rounded slope.

Abdomen hardly longer than the head and thorax united, rugosely punctured; the

petiole bulging out roundly. Pygidial area elongated, narrow, bulging out from the

base to near the middle, then narrowing to the apex, which is rounded, and about half

the width of the base; the surface coarsely aciculate, the base rugose, with a few large

punctures. The incision in the hypopygium not reaching near to the middle, wide,

longer than broad, rounded at the base. The base of the mandibles, the inner orbits

of the eyes, a mark on the clypeus, an interrupted line on the pronotum, an irregular

mark below the tegule, a mark on either side of the scutellum, the metanotum, two

large marks on the median segments, a broad band on the petiole, a narrower band on

the second segment, a still narrower one on the fourth segment, yellow. On the

mesopleure is a stout yellow projecting spine. Anterior and intermediate femora at

the apex and the tibie and tarsi in front obscure yellowish-white. |

The male has the clypeus convex, the middle projecting, truncated; the pygidial

area aciculate, the basal half with large punctures, the apex rounded, a little narrower

than the base, the sides with a distinctly raised border; and the hypopygium keeled

in the middle. The clypeus is entirely black; the lateral plates yellow. Otherwise

coloured as in the female.

In having the mesopleure spined, C. truncata agrees with C. semipetiolata; but the

front spine is much longer and straighter, the clypeus is not toothed at the apex, and

the colour is different, the median segment being marked with yellow.

e. Clypeus ( 2 ) completely free, projecting, truncated, or transverse at the apex.

24, Cerceris imperialis. (Tab. VII. figg. 21, 2; 21a, clypeus, 21 8, pygidium,

21 ¢, hypopygium, 2; 21d, apex of clypeus, 21 e, hypopygium, 21 f, pygidium, ? , var.)

Cerceris imperialis, Saussure, Reise d. Novara, Hymen. p. 98, t. 4. fig. 56°.

Hab. Mexico, Acapulco in Guerrero (H. H. Smith), Eastern Cordillera !.

We give a renewed description from Mr. Smith’s specimens :—

Clypei pars media late libera, margine apicali late emarginato, fere dentato; oculorum margines paralleli; area

cordiformis nitida, levis ; nigra, clypeo, oculorum marginibus, scutello maculis duabus, metanoto, maculis.

duabus segmento mediali, abdominisque segmentis margine apicali, flavis.

Long. 16 millim.

Eyes slightly diverging beneath. Posterior ocelli separated from the eyes by more

than the length of the second and third antennal joints united, and by the length of

the fourth from each other. Clypeus porrect, slightly broader than long, the apex

with a wide rounded emargination. Antennal tubercle broadly compressed, the top

| CERCERIS. 123

with a sharp edge; third antennal joint fully one quarter longer than the fourth. On

the top of the head the punctuation is moderately strong; the face and clypeus is more

finely punctured and coarsely aciculate. Punctuation of the mesonotum coarse and

running into reticulations; on the pleure the punctures are more widely separated,

still more so on the median segment, where they are also larger. The heart-shaped area

impunctate, the sides foveolate-striolate. Median segment with a rather abrupt slope.

The oblique furrow on the mesopleura is wide and deep. Abdomen longer than the

head and thorax united. Petiole somewhat longer than wide, shining, and bearing

widely separated punctures; the punctuation of the other segments strong at the base,

becoming gradually weaker towards the apex. Pygidial area coarsely rugose, opaque;

the lateral hair-fringe dense, longish, stout, and rufous; the apex rounded. Penulti-

mate and antepenultimate ventral segments densely covered with long, close, fulvous,

soft hair; the bristles on the last segment long, dense, and fulvous. The inner orbits

of the eyes broadly, the clypeus (except the apical tips), a mark behind the eyes, two

lines on the pronotum, a mark on either side of the scutellum, the metanotum, a broad,

elongate mark on the side of the median segment extending nearly from the base to

the apex, the sides (broadly) and the apex of the petiole, a narrow line on the second

abdominal segment, a broader one on the third, and the greater part of the fourth and

fifth segments, yellow. ‘The anterior and middle tibie and tarsi (except an irregular

black line on the former behind) and the knees rufo-testaceous; the hinder tarsi

obscure testaceous at the base and apex. Spurs and spines fulvo-testaceous.

An example from Temax, Yutacan (Gawmer), has the marks on the median segment

much reduced, only commencing at the middle, and the petiole and the third segment

only marked with yellow; the projecting middle of the clypeus appears shorter and has

the incision shallower; the head looks smaller; the antenne are not rufous at the

base ; and the four front tibiz and tarsi are fuscous-black. Our figures 21d-21/ are

taken from this specimen.

25. Cerceris exsecta.

Cerceris exsecta, Smith, Ann. & Mag. Nat. Hist. 4th ser. xii. p. 410°.

Hab. Mexico 1.

This agrees so closely with C. imperialis in coloration and in the form of the clypeus

that I have no doubt the two will prove to be conspecific. C. «mperialis, it may be

added, shows considerable variation in the colour of the legs and abdomen.

96. Cerceris esau. (Tab. VILL. figg. 1, head 1, apex of clypeus, 1 4, pygi-

dium, 1c, hypopygium, ¢ .)

Cerceris esau, Schletterer, Zool. Jahrb. ii. p. 458 1.

Hab. Mexico, Cuautla 1.

RR 2

124 . HYMENOPTERA.

This well-marked species is a close ally of C. curvicornis, but is larger and stouter,

and, if anything, more pilose; the apex of the clypeus (comparing the males) is trans-

verse, with a tooth in the centre; the terminal antennal joint is not hooked; the

scutellum and metanotum are not yellow; the hind tibize are without black, &c.

27. Cerceris acolhua. (Tab. VIII. figg. 2, head; 2a, apex of clypeus; 2,

pygidium; 2c, hypopygium ; 2d, antenna, ¢ .)

Cerceris acolhua, Saussure, Reise d. Novara, Hymen. p. 90 (¢)’-

Hab. Mexico, Chapultepec !.

28. Cerceris curvicornis. (Tab. VIII. figg. 3, antenna, ¢; 34a, male organ.)

Nigra, dense fusco-pilosa, facie, scapo subtus, linea pronoto, scutello, metanoto, maculis 2 parvis petiolo,

abdominis segmentis marginibus pedibusque flavis; femoribus tibiisque posticis nigris; flagello anten-

narum fulvo; alis fumato-hyalinis, apice fusco, nervis stigmateque croceis.

Long. 15 millim.

Hab. Mexico, Presidio de Mazatlan (forrer).

Very similar in coloration and size to C. acolhua. It differs, however, in having a

yellow wedge-shaped mark over the antenne; the scutellum yellow; the hind tibie

black, broadly yellow at the base; the antenne fulvous beneath; the band on the

pronotum almost complete; the entire head and body much more densely covered

with long fuscous hair, and also more opaque and much more strongly punctured, espe-

cially the thorax and abdomen; the apex of the clypeus instead of having a round

broad lobe in the centre is there much narrower, being almost tridentate; the hinder

ocelli separated from each other by almost a greater distance than they are from the

eyes (the opposite being the case in C. acolhua); the wings at the apex much more

clearly infuscated ; the heart-shaped area of the median segment coarsely punctured,

not striolate; and, lastly, the terminal antennal joint much more deeply curved or

hooked, and longer than the penultimate. ‘The eyes are parallel and broader than in

C. acolhua, the face in C. curvicornis being thus narrower.

‘J 29. Cerceris hebes. (Tab. VIII. figg. 4, ¢; 4a, antenna, ¢; 46, clypeus;

4¢, pygidium ; 4d, hypopygium.)

Long. 12-13 millim.

Hab. Mexico, Chilpancingo in Guerrero 4600 feet (H. H. Smith).

Eyes slightly diverging beneath. Ocelli almost in a triangle; the posterior pair

separated from the eyes by about the length of the second and third antennal joints

united, and by a slightly greater distance from each other. Clypeus flat, slightly

hollowed in the middle near the apex, which is produced into a broad triangular blunt

point. Antennal tubercle acute, the broad part at the apex. The third antennal

CERCERIS. . 125

joint not much longer than the fourth and about two-thirds longer than the second.

Head coarsely, rugosely punctured; the face with a finer punctuation; the middle of

the clypeus at the apex impunctate. Thorax coarsely, rugosely punctured, the pleure

not so coarsely ; median segment short, with a gradual slope to the apex, the middle

with a broad smooth furrow; the heart-shaped area rugosely punctured laterally, the

centre’smooth and furrowed. Abdomen rugosely punctured, the punctures large; the

depressed band at the apex of the segments sericeous, aciculate. Pygidial area a little

longer than broad, shield-shaped, the sides rounded and bulging out; the apex almost

truncated, slightly projecting at the corners; the base rounded. Ventral surface punc-

tured ; the apex of the penultimate segment projecting at the tip. The scape entirely

and the flagellum of the antenne beneath are rufous. The clypeus, the cheeks, the

inner orbits of the eyes (the sides of the clypeus above are bordered with black), the

antennal tubercle at the apex, a small spot on the vertex behind the eyes, two lines on

the pronotum, two marks on the scutellum, the metanotum, a broad line on the edges

of the median segment, a line on either side of the petiole, a band on the apex of the

abdominal segments, and the pygidial area (entirely), yellow. ‘The greater part of the

hinder coxe and trochanters, a line on the femora, the knees, tibie (except a black

line behind), and tarsi and spurs, yellow; the spines white.

30. Cerceris azteca. (‘T'ab. VIII. fige.5, head; 5a, clypeus; 56, pygidium ;

5c, hypopygium.) |

Cerceris azteca, Saussure, Reise d. Novara, Hymen. p. 97 ( 2).

Hab. Mexico (coll. Saussure), Orizaba1, Yautepec 1, Cuautla 1.

This is a smaller species than C. tepaneca, and may be known from it by the incised

middle of the clypeus, the smooth heart-shaped area, the two marks on the scu-

tellum, the apex of the petiole marked with yellow, the lighter coloured wings, fuscous

stigma, &c. |

\y 81. Cerceris tepaneca. (Tab. VIII. figg. 6, clypeus, ¢; 6a, head, 64 & 6¢,

clypeus, 2 .)

Cerceris tepaneca, Saussure, Reise d. Novara, Hymen. p. 90( 2)’.

Hab. Mzxico, Presidio de Mazatlan (Forrer), Orizaba 1, Atoyac in Vera Cruz (1. H.

Smith).

We give a renewed description of this species :—

Clypei pars media fere convexa, libera, longis, margine laterali paralleli, margine apicali truncato; oculorum

margines paralleli; area cordiformis opaca, striolata; nigra, clypeo, oculorum marginibus, metanoto,

abdominis segmentis 2° et 3° apicibus, 4° et 5° fere totis, flavis; pedibus rufo-fulvis, basi nigris; alis flavo-

hyalinis, violaceis, costa stigmateque fulvis.

Long. 11 millim.

126 HYMENOPTERA.

Eyes slightly diverging. Ocelli separated from the eyes by a little more than the

length of the third antennal joint, and by a slightly less distance from each other.

Middle of the clypeus porrect, reaching below the labrum, longer than broad, convex,

the apex truncate, rounded at the edges. Antennal tubercle reaching to the clypeus,

acutely edged. Head coarsely rugose, the face and clypeus with scattered punctures.

Third antennal joint one half longer than the fourth. Cheeks bearing silvery-fulvous

pubescence. Thorax short, not much more than twice the length of the head ; coarsely

punctured ; prothorax large, broad. Median segment with a rather steep rounded slope ;

the heart-shaped area acutely triangular, opaque, granular, obliquely longitudinally

striolated. Punctuation of the median segment very coarsely rugose. The oblique

furrow on the mesopleura indistinct. Petiole broader than long; punctured strongly.

Punctuation of the abdominal segments moderate, and becoming weaker towards the

apex. Pygidial area coarsely rugose, of nearly equal width throughout ; the sides with

large separated punctures; the lateral hair-fringe short, pale testaceous. The incision

in the hypopygium wide, longer than broad, rounded at the base. The inner orbits

of the eyes broadly, the clypeus (except round the edges), the metanotum, a narrowish

band on the apex of the second and third segments, the greater part of the fourth

and fifth segments and the sides of the apical one, and the apical three segments broadly

at the sides beneath, yellow. Legs fulvous, the coxe, trochanters, and the greater part

of the femora black.

~ 32. Cerceris erythropoda. (Tab. VIII. figg. 7, head; 7a, clypeus; 74, pygi-

dium ; 7c, hypopygium.)

Nigra, facie, thorace abdomineque flavo-maculatis ; pedibus fulvo-rufis, basi nigris ; alis fere hyalinis, apice

fumatis, stigmate ochraceo ; clypeo elevato, libero, apice truncato. ©.

Long. 10°5 millim.

Hab. Mexico, Cordova (coll. Saussure).

Kyes parallel, distinctly margined behind; hinder ocelli separated from the eyes by

fully the length of the third antennal joint and from each other by a slightly less distance.

Punctuation of the head moderately coarse. Clypeus obliquely porrect ; longer than

broad, narrowed slightly towards the apex, which is almost transverse. Thorax with

the punctures wide apart; those on the median segment somewhat larger. The heart-

shaped area of the median segment longitudinally striated laterally ; furrowed down the

centre, which is aciculate. Petiole broader than long, bearing scattered punctures;

the second and third segments punctured like the mesonotum, but with the punctures

smaller; the punctures on the other segments smaller and closer. Pygidial area

straight, slightly narrowed towards the apex, the surface irregularly reticulated ; the

lateral hair-fringe sparse. The incision in the hypopygium longer than broad, rounded

at the base, reaching near to the middle. Legs but slightly haired; the hinder tibie

coarsely serrate. Cubitus oblique, angled broadly beneath; the recurrent nervure

CERCERIS. 127

received in the middle. ‘The following parts are pale yellow: the clypeus, the cheeks,

the antennal tubercle, a small spot behind the eyes, an interrupted line on the pro-

notum, the tegule, the metanotum, two large marks on the median segment, a mark

on either side of the petiole, a line (narrowed in the middle) on segments 2-5, and a

spot on the side of the third and fourth ventral segments. The legs are fulvous-red,

except the cox, the trochanters, and the base of the femora.

“33. Cerceris bicornuta. (Tab. VIII. figg. 8, head, 8a, pygidium, 85, hypo-

pygium, ? .)

Cerceris bicornuta, Guér. Icon. du Régn. Anim. p. 448; Cresson, Proc. Ent. Soc. Phil. v. p. 117°;

Saussure, Reise d. Novara, Hymen. p. 100, t. 4. fig. 58°.

Hab. Norta America 2, from New York to Louisiana !1.—MExico 2.

The female only appears to be known of this species.

vA e

34, Cerceris rostrata.

Cerceris rostrata, Smith, Ann. & Mag. Nat. Hist. 4th ser. xii. p. 409’.

Hab. Mexico }.

Smith describes the female only of this species. In coloration, it comes very near

indeed to C. simulans, of which the male only is known; but I think it very probable

that C. rostrata will prove to be its female. Smith! describes the clypeus as “ elevated

and narrowed at half its length to a point.” |

\ 85. Cerceris bothriophora.

Cerceris bothriophora, Schletterer, Zool. Jahrb. ii. p. 456 *.

Hab. Mexico}.

\— 36. Cerceris chrysogastra.

Cerceris chrysogastra, Schletterer, Zool. Jahrb. ii. p. 458".

Hab. Mexico, Orizaba, Cuernavaca !.

\“ 87. Cerceris trichiosoma.

Clypeo ovato, subconvexo, margine apicali producto; oculorum margines fere paralleli; area cordiformis

rugosa; nigra, longe pilosa, facie, abdominis segmentis 1°, 3°-6™ marginibus apicalibus metanotoque

flavis; alis fumato-hyalinis, antice fuscis, costa stigmateque sordide fulvis. <¢.

Long. 10 millim.

Hab. Mexico, Ciudad in Durango 8100 feet (Forrer).

Antenne with joints 3—7 fulvous beneath; the third joint as long as the first, and

fully one quarter longer than the fourth. Eyes almost parallel. Ocelli almost in a

triangle; the posterior pair separated from the eyes by a little more than the length

128 HYMENOPTERA.

of the third antennal joint and by a somewhat less distance from each other. Clypeus

convex, ovate; the apex produced into a blunt tooth in the middle. Antennal keel

sharply pointed, hardly reaching to the base of the clypeus. The entire head is coarsely

and strongly punctured ; below the antenne and the orbits, a little above the antenne,

yellow; covered with long pale fuscous hair. Thorax coarsely punctured throughout,

except on the metanotum ; closely covered with rather long pale hair; black, except

two widely separated lines on the pronotum and the metanotum, which are yellow.

Abdomen elongate, narrow, longer than the head and thorax united, not quite so

strongly punctured as the thorax, and with the pilosity much shorter. Pygidial area

sparsely punctured, aciculate; the sides distinctly keeled, narrowed somewhat towards

the base. Tibize and tarsi yellowish in front; the hinder pair more or less black in

front; the calcaria yellow; the hinder tibie greatly attenuated at the base; the four

hinder coxe and trochanters yellow beneath.

Very similar in the form of the body to C. pilosa, but smaller; the antenne shorter

and thickened towards the base; the apex of the clypeus toothed ; the median segment

wanting the yellow marks, its area being rugose, &c

88. Cerceris pilosa. (Tab. VIII. figg. 9,3; 9a, clypeus; 98, pygidium ; 9¢,

hypopygium.)

Long. 18 millim. <6.

Hab. Guatemaa, San Gerénimo (Champion).

Hyes almost parallel. Ocelli separated from the eyes by the length of the fourth

antennal joint, and by a little less distance from each other, not forming a triangle.

Clypeus convex, depressed towards the apex; the extreme apex flat, broadly and

roundly projecting in the middle ; the lateral projection broad, depressed in the centre.

Antennal tubercle small, narrow. Antenne of nearly uniform thickness; the joints

oblique at the apex ; the third joint hardly one quarter longer than the fourth. Punc-

tuation of the head coarse, deep. Thorax somewhat more strongly punctured than the

head; the heart-shaped area impunctate, furrowed down the middle; the bordering

furrow finely crenulated. Median segment with a gradually rounded slope. Abdomen

longer than the head and thorax united, narrow; rather strongly punctured; the

petiole longer than broad, narrowed at the apex. Pygidial area opaque, aciculate,

bearing large, separated punctures, bulging out gradually at the middle; the apex

transverse ; the sides with coarse punctures. The clypeus, the inner orbits of the eyes,

the projecting edges, a line on either side of the pronotum, the tegule, a mark on either

side of the scutellum, the metanotum, a broad irregular mark on the side of the

median segment, the apex of the petiole broadly, a narrower band on the abdominal

segments 3—5, the anterior and middle tibie and tarsi, the knees, the hinder trochanters,

and the spurs, yellow; the tibie lined with black behind.

CERCERIS. 129

39. Cerceris scapularis.

Cerceris scapularis, Schletterer, Zool. Jahrb. ii. p. 457°.

Hab. Mexico, Orizaba!.

40. Cerceris thermophila.

Cerceris thermophila, Schletterer, Zool. Jahrb. ii. p. 463°.

Hab. Mexico}.

ws,

~ 41, Cerceris graphica.

Cerceris graphica, Smith, Ann. & Mag. Nat. Hist. 4th ser. xi. p. 410 ( 2)’.

Hab. Mexico}.

Smith describes the female, but nothing is said about the form of the clypeus. The

‘abdomen ferruginous, with yellow band” and the “legs ferruginous, with yellow

tarsi” appear to separate it from any of the species known to me.

oe . * | = See cen1e

“42. Cerceris sonorensis. (Tab. VIII. fig. 10, ¢ organ.)

Nigra, facie, linea pronoti, metanoto, pedibus lineisque abdominis segmentis, flavis; antennis rufis et flavis;

alis hyalinis, antice fulvo-fumatis, stigmate fulvo. ¢.

Long. 12 millim.

Hab. Mexico, Northern Sonora (Morrison).

Head large, wider than the thorax, closely and rather strongly punctured, and

covered with long pale hair. The cheeks, clypeus, mandibles (except at the apex),

the space between the antenne, and a short distance up on either side of them,

yellow; there is a small irregular mark at the top of the head behind, and nearly

touching the eyes. The thorax is shining and punctured like the head, and covered

with long pale hair; there is a large mark (broadest behind) at the apex of the anterior

coxee, and a small mark in front of the four hinder coxe. The heart-shaped area of

the median segment is defined, but does not differ much in punctuation from the rest

of the segment, and is furrowed down the middle. The abdomen is much more feebly

punctured than the head, the depressions aciculate, and it is covered with pale hair.

The yellow band (rufo-fulvous in the specimen, probably through discoloration by

cyanide of potassium) on the second segment is wider and larger than that on the

other segments, and has a broad incision in the middle in front. The two basal ventral

segments are for the greater part yellow. The yellow of the legs is intermixed with

fulvous; the second to the fourth tarsal joints are marked with fuscous. The cloud in

the wings commences from the apex of the stigma and extends to the cubital cellules.

The joints 7-11 of the antenne are marked with black above; the third joint is about

as long as the fourth and fifth united; the last joint is curved. The third transverse

cubital cellule is received at the apex of the radial cellule.

BIOL. CENTR.-AMER., Hymenopt., Vol. IL., February 1891. SS

130 HYMENOPTERA.

EUCERCERIS. |

Eucerceris, Cresson, Proc. Ent. Soc. Phil. v. p. 104 (1865).

Eucerceris has, according to Cresson, “ the third cubital cellule very large, subquad-

rate, scarcely narrowed towards the radial cellule, and extending beyond it, and without

a sinus between them ; the second cubital cellule triangular, sometimes petiolate in the

female ; the radial cellule obtusely truncate at the apex; the first abdominal segment

narrowed as in Cerceris; and the neuration of the anterior wings génerally dissimilar

in the sexes.” I feel inclined to regard it as a subsection of Cerceris. Fifteen North-

American species are known.

J 1. Eucerceris cerceriformis.

Nigra, facie, linea pronoti, linea scutelli, metanoto, abdominis segmentis marginibus, maculisque 2 segmento

mediali, albidis; pedibus fulvis, geniculis tibiisque anterioribus albis; alis hyalinis, anticis fumatis,

stigmate ochraceo. 9°.

Long. 10 millim.

Hab. Mexico (coll. Saussure).

Antenne with the flagellum brownish beneath, gradually thickened towards the

apex; the third joint somewhat longer than the first, and nearly four times the length

of the second. Head shining, closely and not very strongly punctured; from below the

ocelli it is entirely whitish-yellow, and there is an elongated mark behind the eyes ;

a black elongated fossulet above the eyes, and a short furrow between these fossulets ;

ocelli separated from the eyes by somewhat less than the length of the third antennal

joint; apex of the clypeus broadly rounded ; eyes diverging a little below. Thorax

rather strongly punctured; the pleure rugose, the heart-shaped area of the median

segment transversely striated, widely furrowed down the centre; a broad line on the

-pronotum, the tegule, the tubercles, a mark behind them, a broad complete line at the

base of the scutellum, the metanotum, two large marks on the median segment, and a

broad band on the abdominal segments, yellowish-white. Abdomen shining, bearing

scattered punctures; the pygidial area with some large punctures at the base, its sides

curved, hollowed, ending as stout, somewhat triangular, teeth, and with a few large

widely separated punctures; incision in the hypopygium short; there is a depression

in the centre of the antepenultimate segment, and a row of stiff longish bristles at

its base.

PHILANTHUS.

Philanthus, Fabricius, Ent. Syst., Suppl. p. 268 (1793) ; Syst. Piez. p. 301.

Simblephilus, Jurine, Nouv. Méth. de Class. les Hymén. p. 185 (1807).

Trachypus, Klug, in Ges. naturf. Fr. Berl. Mag. iv. p. 41 (1810).

Anthophilus, Dahlbom, Hymen. Eur. i. p. 496 (1845).

Philanthocephalus, Cameron, antea, p. 86.

A genus somewhat numerously represented in the Nearctic Region, but apparently

possessing fewer species in the Neotropical.

PHILANTHUS. 13k

A. Abdomen sessile.

1, Philanthus vertilabris. (Tab. VIII. fig. 11, ¢.)

Philanthus ventilabris, Fabr. Ent. Syst., Suppl. p. 268; Cresson, Proc. Ent. Soc. Phil. v. p. 98°.

Philanthus vertilabris, Fabr. Syst. Piez. p. 303; Coqueb. Ill. Icon. p. 96, t. 22. fig. 2; Say, Amer.

Ent. p. 112, t. 49. fig. 2.

Anthophilus vertilabris, Dahlb. Hymen. Eur. i. p. 497.

Hab. Norta America, United States \—Muxico, Atoyac in Vera Cruz (Schumann).

2. Philanthus xanthostigma. (Tab. VIII. figg.12,2; 124, pygidium; 128,

hypopygium. )

Niger, facie, metanoto, abdominis segmentis 2°, 4°-6™ fere toto, tibiisque anticis flavis; alis hyalinis, costa et

stigmate fulvis. ©. .

Long. 9 millim. .

Hab. Mexico (Sallé), Chilpancingo 4600 feet, Dos Arroyos 1000 feet, Venta de Zopilote

2800 feet, all in Guerrero (H. H. Smith); Guatemata, San Gerdénimo (Champion).

Eyes parallel on the lower side. Ocelli in a triangle; the hinder ocelli separated from

the eyes by the length of the third antennal joint, and from each other by a little more

than the length of the fourth. Clypeus but slightly convex; the apex distinctly and

completely margined, broadly roundly projecting, flat. Head rugosely punctured; a

shining, impunctate space on the vertex near the top; the clypeus and face with

scattered punctures; antennal tubercle flat; the face and oral region, the orbits

broadly to the top of the antennal tubercle, and the greater part of the mandibles,

yellow; a small quadrate spot between (and above) the antenne, and an obscure

fulvous spot behind the eyes. Antenne short, stout, perceptibly thickened towards

the apex; the scape yellow; the flagellum more or less fulvous beneath; the third

joint thinner than the fourth (especially at the base), and nearly twice its length. The

hair on the head is longish, moderately thick, and silvery-white. Thorax shining ;

the mesonotum with large, deep, scattered punctures; the pleure coarsely rugosely

punctured; the median segment closely transversely punctured; the triangular area

punctured at the base and along the sides, the rest shining and impunctate, and with

a wide furrow in the middle, which does not reach much beyond the base of the

impunctate part. Median segment and pleure covered with short, soft, pale hair; the

median segment roundly curved. Prosternum elongate, placed much lower than the

top of the pronotum. Abdomen shining, almost glabrous at the base, covered with ©

large, deep, widely separated punctures. Pygidial area subtriangular, smooth, shining,

sparsely punctured ; laterally indistinctly keeled. A line on the pronotum, the tegule

in front, the metanotum, a broad belt on the base of the second segment, a narrow one

on the apex of the third, the fourth (except at the base and apex) and the other

segments (entirely), yellow; beneath, the apical three segments are entirely yellow, and

ss 2

132 - HYMENOPTERA.

there is a line and two lateral marks on the apex of the fourth. The knees, the tibie

in front, the anterior tarsi in front, and the spurs are yellow; the spines are glistening

yellowish-white. .

The male has a rounded-triangular mark above the antenne (the narrow end in

front), a large mark (truncated and narrowed behind, and roundly incised in front) on

the front, and the orbits of the eyes to the eye-incision yellow; otherwise coloured

as in the female, except that the metanotum is black, and the yellow on the abdominal

segments is much reduced. The antenne are longer, subclavate. The triangular area

is rugose throughout, and the furrow is obscured by the punctures.

“| 3, Philanthus maculifrons. (Tab. VIII. fig. 13, ¢.)

Niger, capite maculis 9, linea pronoti, scutello, metanoto, geniculis, tibiis tarsisque flavis ; alis fusco-hyalinis. ¢.

Long. 10 millim.

Hab. Mexico, Jaral near Guanajuato (Schumann).

Ocelli in a triangle; the hinder ocelli separated from the eyes by the length of the

first and second antennal joints united, and from each other by the length of the fourth,

and in a deep pit. Clypeus with the apical half depressed obliquely inwardly; the

apex broadly and roundly projecting. Antenne subclavate; the third joint twice the

length of the fourth. Head shining, rather strongly punctured, sparsely covered with

long pale silvery hair. Thorax shining, sparsely haired, strongly punctured ; the

scutellum and metanotum impunctate; the median segment closely, strongly, trans-

versely punctured, the basal area impunctate in the middle, its central furrow wide and

crenulated, the apex suboblique. Abdomen nearly as long as the head and thorax

particularly towards the apex. Pygidial area sparsely punctured. Petiole rising

obliquely from the base, and becoming depressed again towards the apex; looked at

sideways, forming a semicircular curve. <A large mark on the clypeus (wide and roundly |

incised at the apex), a broad line (widest at the apex) along the eyes (having a small

yellow mark below it, clearly separated by a narrow black line), a somewhat triangular

mark over the antenne, two marks behind the ocelli, a more elongate and larger mark

behind the eyes, the edge of the pronotum, the tegule, the tubercles and a mark in

front of them, the scutellum, the metanotum, a broad band on the base of the second

segment, a narrower band on the apices of the third, fourth, and fifth segments, the sides

of the sixth segment, a mark on the sides of the third and fourth ventral segments, and

the scape, knees, tibiee, and tarsi, yellow. ‘The first recurrent nervure is received in the

middle of the second cubital cellule, the cubital nervure being angled at this part; the

second cubital nervure a little beyond the second transverse cubital nervure.

Very closely related to P. xanthostigma; but differing from it in having two marks

behind the eyes, the scutellum, and metanotum yellow, the knees, tibiz, and tarsi

PHILANTHUS. 133

entirely yellow, the wings distinctly suffused with fuscous, the face and clypeus much

less strongly haired, the apex of the clypeus more sharply and obliquely depressed, and

the head less developed behind the eyes, and more sharply retreating.

4. Philanthus multimaculatus. (Tab. VIII. fig. 14, ¢.)

Niger ; capite et thorace flavo maculatis (mesonoto cum 2 lineis flavis), abdominis segmentis late pedibusque

fere toto flavis; alis fulvo-hyalinis, costa et stigmate fulvis. ¢.

Long. 9 millim.

Hab. Mexico, Atoyac in Vera Cruz (Schumann).

Clypeus flat, rounded and margined at the apex; the lateral hair-fringe very long,

the outer hairs reaching (when pressed) nearly to the centre of the clypeus. Ocelli in

a triangle; the hinder ocelli separated from the eyes by hardly the length of the third

antennal joint, and from each other by more than the length of the fourth. Third

antennal joint more than twice the length of the fourth, and longer than the first.

Head shining, the pile and punctuation sparse and not very strong. Thorax shining,

sparsely punctured; the median segment closely transversely rugose, its apex sharply

suboblique; there are two furrows on the mesonotum. Abdomen longer than the

head and thorax united; sparsely covered with large, moderately deep punctures.

Pygidial area with a few punctures. The head in front from a little below the ocelli,

the mandibles (except at the base and apex), the scape and joints 3 and 4 of the

antenne beneath, a large mark (incised in front and projecting in the middle behind)

behind the ocelli, an elongated line running from the vertex down the outer orbits,

the pronotum broadly, a small mark on its sides, two broad lines in the centre of the

mesonotum, a short line in front of the tegule, the tubercles and two spots (the interior

the larger and more irregular) behind them, a large mark on the mesopleura, the

tegule, the scutellum and a mark on either side of it, the metanotum, two oblique

marks at the base of the median segment and a large one on the sides, the abdominal

segments broadly above and beneath, the base of the coxe, the apical half of the

femora, and the tibie and tarsi, clear yellow. The first recurrent nervure is received

before the middle of the cellule, the second near the base.

B. Abdomen petiolate, impunctate.

~ §, Philanthus mexicanus.

Trachypus mexicanus, Saussure, Reise de Novara, Hymen. p. 86 (2 )*-

Philanthocephalus mexicanus, Cam. anted, p. 89, Tab. VI. figg. 5, 5a,b(3),6(¢?)’.

To the Mexican localities given ?, the following has to be added :—Tampico 1.

/ 6, Philanthus punctifrons.

Philanthocephalus punctifrons, Cam. antea, p. 90, Tab. VI. figg. 7, 7a (¢).

134 HYMENOPTERA.

7. Philanthus hirticeps.

Philanthocephalus hirticeps, Cam. anted, p. 87, Tab. VI. figg. 2, 2a,b(S).

8. Philanthus maculiceps.

Philanthocephalus maculiceps, Cam. anted, p. 88, Tab. VI. figg. 3, 3 a (3).

_, 9. Philanthus gracilis.

Philanthocephalus gracilis, Cam. antea, p. 88, Tab. VI. figg. 4, 4a, b(¢).

Fam. MIMESIDZ.

‘This is a small group, represented by two or three genera of wide distribution, but,

so far as we know, of limited extent. Its chief peculiarities are:—The petiolated

abdomen, the petiole being smooth and generally furrowed ; the flagellum thickened

towards the apex; the middle tibiee with only one spur; and the wings with four

cubital cellules, the recurrent nervures being received either in the second or in the

second and third. The species are small, few of them exceeding 15 millim. in length,

and are entirely black, or black with yellow markings.

MIMESA.

Mimesa, Shuckard, Essay on the Foss. Hymen. p. 228 (1837).

The distinctions between Mimesa and Psen become so vague, as regards the neuration

of both the anterior and the posterior wings, that I can hardly regard them as distinct,

and am strongly inclined to the opinion that they should be united. It is, however,

possible that an examination of additional material from the tropics may reveal other

generic characters than those afforded by the alar neuration ; for the present, therefore,

as a matter of convenience, I retain the convential genera. In all our species the inner

spur of the hind tibie is dilated.

A. Petiole gradually dilated at the apex, not furrowed laterally, the dilated

part not abruptly separated from the rest.

1. Mimesa mexicana. (Tab. VIII. fig. 15, ¢ .)

Nigra; capite et thorace pallide hirtis, aciculatis; flagello antennarum subtus fulvo; abdominis segmentis

2° et 3° rufis; alis hyalinis. 2.

Long. 8 millim.

Tab. Mexico, Milpas in Durango 5900 feet (Forrer).

Eyes parallel, strongly faceted. Ocelli in a triangle. Clypeus convex, broadly

rounded, the margin depressed. Antenne stout, thickened towards the apex, covered

MIMESA. 135

with a hoary microscopic pile; the third joint slightly curved, nearly one quarter

longer than the fourth, and almost as long as the space between the hinder ocelli and

the eyes. Head finely, rugosely punctured, the top bearing long, erect, fuscous hairs ;

the face and vertex densely clothed with silvery, depressed hair. Thorax coarsely

aciculated ; the triangular area of the median segment strongly longitudinally strio-

lated, the rest of the segment rugose; apex of the median segment with an oblique

slope. Petiole with the basal half narrow, of equal width throughout, with a slight

curve, not furrowed above or laterally; the sides with a distinct margin, the apex

gradually dilated. The abdominal segments shining, impunctate; the middle and

apical segments covered with a short pubescence. Pygidial area gradually narrowed

from the base to the apex; above longitudinally rugosely punctured. The apex of the

petiole, the second segment, and the third segment broadly at the sides ferruginous-red.

Legs covered with a whitish pubescence; the spurs white; the inner spur of the

posterior tibiz thickened. Second cubital cellule narrowed above, not half the length

of the third; the transverse cubital nervures straight; the first recurrent nervure

received at half the length of the top of the second cubital cellule from the first trans-

verse cubital, the second recurrent nervure at half the distance from the second cubital.

Neuration of the posterior wings as in the typical species; the nervures faint towards

the apex.

B. Petiole abruptly dilated at the apex, longer than the thorax, laterally grooved.

2. Mimesa pulchra. (Tab. VIII. fig. 16, 2.)

Nigra, aurea, hirta, mesonoto punctato, antennarum dimidio basali, pedibus(basi nigra), tegulis, costa stigmateque

fulvis; alis fulvo-hyalinis. ©.

Long. 10 millim.

Hab. Mexico, Sierra de las Aguas Escondidas, Guerrero, 7000 feet (H. H. Smith).

Vertex shining, sparsely and slightly punctured, sparsely covered with short golden

hairs; the rest of the head is so closely covered with golden hair that the surface is

entirely hidden. Ocelli hardly forming a triangle; there is a narrow furrow behind

them, and a much wider and deeper furrow runs obliquely from the posterior ocelli.

Frontal furrow narrow and indistinct. Clypeus convex, the apex broadly rounded,

almost transverse, a slight incision in its middle. Mesonotum opaque, closely and

rather strongly longitudinally punctured; the scutellum shining, sparsely punctured.

Pleure shining, impunctate. Triangular area of the median segment with irregular

widely separated strie or keels; the rest of the median segment irregularly rugosely

reticulated. Metapleure shining, impunctate. The median segment is short, and

rounded gradually. The pronotum, the mesopleure in front, and the median segment

are densely covered with fulvous-golden, the rest of the thorax with shorter fulvo-

fuscous, pubescence. Abdomen with the apices of the segments rufo-piceous; the

136 HYMENOPTERA.

sides and apex covered rather densely with fulvous-golden hair. Petiole nearly as long

as the thorax, curved, furrowed deeply above, and bearing rather long pale fulvous

hair. Pygidial area elongated, sharply rounded at the apex, with a sharp stout keel

in its centre. Legs stout; the coxe anda line on the underside of the femora (that

on the posterior pair broad) black; the femora sparsely, the tibie and tarsi densely,

covered with whitish hair, that on the tibia erect and resembling bristles on the

hinder edge. Metatarsus curved at the extreme base; the large spur of the tibie

(which is dilated at the base) reaches to its middle. The second cubital cellule is a

little more than half the length of the third; the first recurrent nervure is received in

the middle of the cellule, the second at the apex.

‘8, Mimesa striolata. (Tab. VIII. fig. 17, 2.)

Nigra, tarsis pallidis, flagello antennarum subtus fulvo ; capite punctato; mesonoto striolato, segmento mediali

reticulato ; alis hyalinis, stigmate fusco. 9.

Long. 10 millim.

Hab. Mexico, Amula 6000 feet, Omilteme 8000 feet, Chilpancingo 4600 feet,

Xucumanatlan 7000 feet, all in Guerrero, Atoyac in Vera Cruz (ZH. H. Smith).

Eyes almost parallel. Ocelli ina triangle. Front broadly projecting between the

antenne, the projection broader than long. Clypeus convex; the apex almost trun-

cated. There is a furrow behind the ocelli, and external to them a much wider one;

a furrow also runs down from the ocelli to the antenne. Front and sides of the vertex

on either side of the ocelli finely rugosely punctured ; behind the ocelli and along the

top of the eyes almost impunctate. Below the antenne the head is densely covered

with silvery pubescence, hiding the surface, above them it is sparsely haired.

Antenne stout, slightly thickened towards the middle; the third joint not one

quarter longer than the fourth; the joits 2-7 and the terminal one rufous, the

others fuscous beneath. Thorax short, about twice the length of the head; meso-

notum coarsely and closely striolated; scutellum striolated, intersected with punctures ;

mesopleure almost impunctate; median segment irregularly rugosely punctured, the

base in the middle widely reticulated; there is a fringe of golden-silvery hair on the

pronotum, and the sides of the median segment at the apex are densely covered with

long silvery hair. The petiole is nearly as long as the thorax, narrow, shining,

cylindrical, slightly curved, and bare, laterally deeply and widely furrowed; it is

articulated to the lower part of the second segment. Abdomen shining, impunctate ;

_the second and third segments slightly, the other segments densely, covered with

rather long silvery pubescence. Pygidial area narrow, keeled down the middle,

impunctate. Wings short ; second cubital cellule a little narrowed at the top, receiving

the recurrent nervures about the basal third and apical fourth, not half the length of

the third cellule above and beneath; third transverse cubital nervure bent above the

middle. In the hind wings the transverse median nervure is received beyond the

MIMESA. 137

origin of the anal nervure. Legs short, pilose; the tibize without spines. The poste-

rior spurs rather long, the outer spur curved, and, compared with the inner one,

thicker at the base ; they are pure white, and reach to the middle of the metatarsus.

The male has the antenne longer, of more uniform thickness, and with the third

joint not much longer than the fourth, and the puncturing on the thorax coarser.

The punctuation varies in strength, and in one example the antenne are entirely

black.

4. Mimesa longiventris. (Tab. VIII. fig. 18, 2.)

Nigra, mesonoto et scutello striolatis; tarsis testaceis; abdomine quam thorax duplo longiore, dense piloso ;

alis hyalinis, brevibus. ¢.

Long. 12 millim.

Hab. Mexico, Atoyac in Vera Cruz (H. H. Smith).

Head shining, punctured on the front, the vertex almost impunctate; below the

antenne densely covered with silvery, above more sparsely with long erect fuscous,

hair. Ocelli laterally and behind surrounded by a deep and wide furrow; a narrow

keel runs down from the anterior ocellus. Clypeus moderately convex, the apex

broadly rounded. Fyes a little diverging on the lower side; the ocelli almost forming

a triangle. Antenne not much thickened towards the apex, covered with a white

microscopic pile; the third joint as long as the first, and about one quarter longer

than the fourth. Mesonotum and scutellum coarsely and longitudinally striolate, the

latter not so strongly as the former; median segment coarsely reticulated, and with a

large fovea in the basal area, which is not clearly defined ; mesopleuree smooth and

shining ; the longitudinal furrow wide and deep. Petiole scarcely half the length of

the rest of the abdomen; the abdominal segments broadly covered with a silvery

pubescence at the apex; pygidial area obsolete. There is a fringe of greyish-silvery

pubescence on the pronotum, and a denser and longer fringe on the sides of the

scutellum and metanotum; the apex of the median segment bears long silvery hair.

Wings short, only reaching to the middle of the abdomen; the second cubital cellule

at the top about one-third of the length of the third cellule, and shorter than the

space bounded by the recurrent nervures; the first and second transverse cubital

nervures are straight; the first recurrent nervure is received somewhat beyond the

basal third, the second at about half that distance from the apex.

’ 5. Mimesa monticola, (Tab. VIII. fig. 19, 2.)

_Nigra, basi tibiarum posticarum late testacea ; clypeo late inciso; mesonoto punctato, scutello striolato ; petiolo

quam abdomen fere longiore; alis longis. 9.

Long. 11 millim.

Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith).

Head shining, strongly punctured; a depression behind the ocelli; clypeus projecting,

BIOL. CENTR.-AMER., Hymenopt., Vol. IT., Aprid 1891. [TT

138 HYMENOPTERA.

narrowed rather sharply towards the apex, which is sub-bidentate ; eyes slightly diverging

beneath ; ocelliin a curve, an indistinct shallow furrow behind them; the face, clypeus,

and orbits behind densely covered with silvery pubescence. Antenne subclavate, pilose ;

the third joint longer than the first, and about three-quarters longer than the fourth.

Mesonotum coarsely, longitudinally, rugosely punctured; the pleure punctured, but

not strongly; the furrow on the mesopleure distinct; scutellum sparsely punctured,

the metanotum more closely and strongly so; median segment opaquely, closely rugose,

densely covered with long silvery hair, the basal area shining, laterally at the base

stoutly, longitudinally striolate, the centre at the base with two stout converging keels,

the rest with stout transverse striolations. The pronotum at the base is edged with

a close greyish pile; the pleure, and especially the sternum, with rather long grey

hair; the mesonotum clothed with short pile. Petiole curved, pilose beneath, nearly

as long as the following three abdominal segments united. Pygidial area acute at the

apex, shining, keeled laterally. Legs with the tibie and tarsi densely pilose; the

femora bearing rather long white hair. Second cubital cellule converging at the top,

not triangular, at the top as wide as the space bounded by the recurrent nervures ;

the first two transverse cubital nervures straight, the third curved inwardly in the

middle; the first recurrent nervure received a little before the middle, the second

perceptibly before the transverse cubital nervure.

Not difficult to distinguish from the other species here described by the projecting

clypeus, narrowed towards the apex.

6. Mimesa montezuma.

Nigra, basi antennarum rufa; petiolo quam abdomen breviore; mesonoto et scutello striolatis ; segmento

mediali argenteo-hirto ; alis brevibus, hyalinis. 9.

Long. 103 millim.

Hab. Mexico, Atoyac in Vera Cruz (H. H. Smith).

Allied to M. monticola; but with the clypeus less projecting (being merely convex,

not gaping), and not narrowed towards the apex, this part being semicircular; the

ocelli form more of a triangle, and are in pits, while a furrow runs down from the

anterior one; the punctuation of the head not so strong ; the scutellum longitudinally

rugose; the metanotum closely rugose;. the mesopleure almost impunctate; the

median segment more coarsely rugose, and its base not so sharply curved; the

abdomen longer, and the petiole not much longer than the following two segments

united; the wings shorter, not reaching beyond the fourth abdominal segment (in

M. monticola they reach to the apex of the abdomen) ; and the third cubital cellule

shorter, not being twice the length of the second.

EE ne eR eNO Ee

MIMESA.—PSEN. 139

7. Mimesa claviventris. (Tab. VIII. fig. 20, ¢.)

Nigra, basi antennarum rufa; petiolo quam abdomen longiore; segmento mediali aureo-hirto ; alis hyalinis,

longis, cellula radiali infuscata. 9°.

Long. 9 millim.

Hab. Mexico, Xucumanatlan in Guerrero 7000 feet (H. H. Smith).

Head coarsely punctured ; below the antenne densely covered with a silvery pubes-

cence; the front and vertex with a sparser pubescence; the pubescence behind the

eyes inclining to golden; the ocelli hardly forming a triangle, in pits, the posterior pair

united by a curved furrow, a furrow running down from the anterior one. Clypeus

convex, the apex broadly rounded. Thorax above coarsely, rugosely punctured ;

median segment coarsely punctured, irregularly reticulated, the basal area irregularly

striolate, shining; mesopleure finely punctured, densely covered with a silvery pubes-

cence. Petiole curved, as long as the rest of the abdomen; pygidial area shining,

stoutly keeled down the centre, impunctate. Tibie and tarsi appearing white through

the dense white pile which covers them; the femora sparsely pubescent on the lower

side. Wings reaching to the apex of the abdomen, with a distinct smoky tint; the

radial cellule dark fuscous; the second cubital cellule rather elongate, about twice

the length of the third; the first recurrent nervure received in the basal third of the

cellule, the second shortly before the transverse nervure, the space between the two

being somewhat less than the top of the cellule.

PSEN.

Psen, Latreille, Précis des caract. gén. des Ins. p. 122 (1796).

In the only species from our region the two hinder tibial spurs are of about equal

thickness, the second recurrent nervure is received in the third cubital cellule, and

the transverse median nervure is interstitial. In the generic definitions the stigma in

Psen is said to be “ broad,” and that of Mimesa “slender ;” but in P. annulipes it is

not broader than in the species I have placed under Mimesa.

“4. Psen annulipes. (Tab. VIII. fig. 21, 2.)

Niger, nitidus, facie et clypeo aureo-hirtis ; basi tarsorum albida; alis violaceo-fumatis, stigmate fulvo. 9.

Long. 11-12 millim.

Hab. Mexico, Amula 6000 feet, Rincon 2800 feet, Chilpancingo 4600 feet, all in

Guerrero, Teapa in Tabasco (H. H. Smith).

Eyes slightly converging beneath. Ocelli almost forming a triangle. Head shining,

sharply retreating behind the eyes; the occiput margined; the vertex and front

sparsely haired; the face covered with long golden hair; clypeus convex, the apex

transverse ; ocellar region raised. Antenne short, stout ; the third joint fully one

TT 2

140 HYMENOPTERA.

quarter longer than the fourth. Thorax shining, minutely and sparsely punctured ;

the median segment largely reticulated, the keels stout; there is a belt of depressed

silvery pubescence on the pronotum; the median segment is covered with rather long

silvery hair, the rest of thorax being sparsely haired. Basal half of the petiole narrow,

cylindrical, slightly curved, not sulcated above or laterally. Abdominal segments —

impunctate, the apex of the abdomen densely covered with golden-fulvous hair.

Pygidial area broad, curving to a sharp point at the apex; the top densely covered

with dark brown stiff, depressed, pubescence; the sides punctured. Legs pilose;

the base of the tibie and of the tarsi broadly, and the spurs, white; tarsi thickly

spinose, the spines long. Second cubital cellule narrow, the top more than half the

length of the bottom, and twice the length of the third; the first recurrent nervure

about three-fourths of the length of the top of the second cellule from the first trans-

verse cubital nervure; the second recurrent nervure immediately beyond the second

transverse cubital nervure, in the third cubital cellule, the latter not much narrowed at

the top; the third transverse cubital nervure curved at the bottom, the top almost

straight.

Fam. PEMPHREDONIDZ.

A family of small extent, and with the species comparatively minute and incon-

spicuous.

. STIGMUS.

Stigmus, Jurine, Nouv. Méth. de Class. les Hymén. p. 139 (1807).

Only two species of Stigmus have been recorded from the Nearctic region and

one from South America.

\’ 1. Stigmus parallelus.

Stigmus parallelus, Say, Bost. Journ. Nat. Hist. i. p. 378’; Complete Writings, ii. p. 760.

Hab. Mexico}.

I cannot identify this insect amongst our Mexican specimens of Stigmus.

V2, Stigmus podagricus. (Tab. VIII. fig. 22, 9.)

Stigmus podagricus, Kohl, Ann. k. k. naturh. Hofmus. v. p. 65'.

Hab. Mexico, Orizaba (Bilimek')(F. D. Godman & H. H. Smith), Tepetlapa in

Guerrero, Teapa in Tabasco (H. H. Smith).

This species differs from the following by the pronotum above being sharply raised, |

completely transverse (not narrowed at the base), and with the sides sharply edged.

STIGMUS.—CRABRO. 141

V3, Stigmus montivagus. (Tab. VIII. fig. 23, ¢.)

Niger, coxis, trochanteribus, tarsis, tibiis, femoribus anticis tegulisque rufo-testaceis ; alis hyalinis. 9°.

Long. 4-43 millim.

Hab. Mexico, Chilpancingo 4600 feet, Omilteme 8000 feet (H. H. Smith).

Head aciculate, almost opaque, the lower part more shining; the front depressed in

the middle ; the clypeus projecting, finely punctured, transverse at the apex. Mandibles

clear yellow. Scape yellowish, the flagellum dull black beneath. Head rather sharply

narrowed behind the eyes. Thorax above alutaceous, opaque, the pleure shining,

aciculate ; median segment shining, closely and finely striated, with a central and two

lateral (stout) keels, the rest with irregular reticulations. Pronotum not keeled above,

short, narrowed in front, at the apex crenulated, the edges rounded; the mesopleure

with two furrows, the lower one very deep and wide, forming a triangle; the meta-

pleure longitudinally striolated and aciculate ; there is a stout rounded keel at the base

of the median segment, and in the centre of the mesonotum are three polished lines.

Petiole curved, finely longitudinally striated, keeled laterally, nearly as long as the hind

femora. Basal joint of the middle tarsi shorter than the other joints united.

The coloration of the legs varies somewhat; the hinder tibie are, for the greater

part, black. The teguls are testaceous, the palpi and tubercles clear yellow.

Fam. CRABRONIDE.

Very few species of this interesting family have been recorded from the Neotropical

zone, the Crabronide being apparently more characteristic of temperate than of tropical

climates. Over one hundred species have been described from the Nearctic region ;

while the species known from the Palearctic are very numerous.

I have included Oxybelus as a subfamily. I am not sure, however, but that it

might be advantageously removed from the Crabronide.

Subfam. CRABRONINA.

-CRABRO.

Crabro, Fabricius, Ent. Syst. 1. p. 293 (1798).

I am unable to accept the numerous genera (Solenius, Ceratocolus, Crossocerus,

&c.) formed by Saint-Fargeau and Dahlbom out of the Fabrician genus Cradéro, chiefly

because the characters on which they were founded merge too much into each other.

The Central-American species may be tabulated thus :—

Abdomen not petiolate. .

Apical abdominal segment acutely pointed, narrowly compressed,

grooved ; ¢ fore tibiz normal. .

Abdomen at base and the thorax rugosely punctured.

Pronotum transverse, the edges acute. . . . . . . « Ssaxatilis.

Pronotum subtransverse, the edges rounded . . . . . . championi, atitlane.

142 | HYMENOPTERA.

Abdomen at base not rugosely punctured.

Abdomen banded with yellow. [centralis, ariel,

The base punctured. . . . . . . . + « + « sonorensis, montivagus,

- The base impunctate . . . . . . . «| ~~ «hector, costaricensis.

Abdomen black.

Thorax rugose . . . . 2... . ee ee Constancee.

Thorax impunctate. . . . . 2... . . + © gwerrerensis, yucatanen-

sis, montezuma.

Apical abdominal segment not acutely pointed or grooved, not

curved ; ¢ fore tibiz expanded (= Thyreopus, St.-Farg.) . . alpestris,alticola,peltista.

Abdomen petiolate, the petiole nodaté, at “the apex. . . . . . . . fulvo-hirtus, macul-

tarsis, jason.

‘’ J. Crabro saxatilis. (Tab. IX. fig. 1, 2.)

Niger, crebre punctatus; abdominis segmentis 2°_6™, femoribus, tibiis tarsisque anticis flavis; petiolo crebre

punetato ; alis fere hyalinis. ¢@.

Long. 7 millim.

Hab. Muxico, Atoyac in Vera Cruz (H. H. Smith), Temax in North Yucatan (Gaumer).

Front shallowly excavated, shining, impunctate, the sides and apex aciculated, the

central furrow fine. Head closely and rather strongly rugosely punctured. Ocelli

forming a curve, separated from each other by the same distance they are from the

eyes—by the length of the second and third antennal joints united. Clypeus rather

sharply keeled in the middle. Third antennal joint twice the length of the second,

and longer than the fourth. Pronotum short, almost transverse, the edges ending in a

sharp tooth-like point; propleuree deeply excavated, shining, irregularly striolate.

Mesothorax and scutellum coarsely and strongly rugosely punctured ; base of the

median segment rugosely punctured, the apex coarsely transversely striolated ; meta-

pleure not deeply excavated, aciculated, and obliquely striated. Basal segment of the

abdomen coarsely rugosely punctured, with a belt of much finer and closer punctuation

at the apex; the second segment in the middle and at the base punctured, but not

strongly; the third segment still less strongly punctured; the other segments acicu-

lated, with some fine punctures at the base and middle. Pygidial area punctured,

the apex bluntly rounded. Legs covered with a pale silvery pubescence ; the hind

tibize with short stout bristles. The long spur of the hind tibie is about one-third of

the length of the metatarsus and a little longer than the second and third joints

united. The wings vary in tint—from almost hyaline to fulvous-smoky; the stigma

is dark testaceous.

~_2. Crabro championi. (Tab. IX. fig. 2, ¢.)

Niger, hirsutus, abdomine punctato; metanoto abdominisque maculis 8 flavis; alis fere hyalinis, stigmate

nigro. ©.

Long. 9 millim.

Hab. Guatemata, Las Mercedes 3000 feet (Champion).

CRABRO, 148

Front excavated ; its furrow hardly differentiated from the depression ; smooth and

shining. Cheeks regular. Vertex not depressed ; the ocelli in a curve, separated by

a somewhat less distance from each other than they are from the eyes—by a little more

than the length of the third antennal joint. Clypeus projecting at the apex, not

keeled down the centre. The punctuation of the head is close, uniform, and rather

coarse; the vertex bears long blackish hair; the cheeks and the outer orbits of the

eyes have a dense silvery-golden pubescence ; the clypeus is covered with long silvery

hair. The scape of the antenne is yellow beneath; the flagellum has a pale micro-

scopic pile ; the third joint is more than one-third longer than the fourth. Pronotum

hardly transverse, forming a slight curve, the edges rounded. Mesonotum coarsely

rugose, the furrows narrow, nearly hidden by the coarse sculpture; the scutellum

convex, more shining than the mesonotum, and with large clearly separated punctures ;

upper half of the mesopleure strongly longitudinally striolated, the lower half and the

sternum coarsely punctured. Metanotum with an indistinct punctuation. Median

segment at the base rugosely punctured ; the median area narrow, V-shaped ; the apex

oblique, transversely striolated ; the furrow wide and deep. Metapleure finely and

closely longitudinally striated. The pubescence is sparse and blackish; on the

median segment long and pale. Abdomen shining; the basal segment bearing large,

distinctly separated, rugose punctures; the second segment is less strongly punctured,

the others much more finely; the base and apex of the segments smooth and

impunctate. ‘The pubescence on the sides, base, and apex of the abdomen is silvery-

white. Legs covered with silvery hair; the tarsi with a fulvous pile; tibie but

moderately spinose; the long spur of the hind tibie reaches almost to the middle of

the metatarsus, and is twice the length of the second tarsal joint; the third and

fourth hind tarsal joints are subequal. The transverse cubital nervure is received a

little before the middle of the radial cellule. An interrupted line on the pronotum,

the tubercles, a spot on either side of the base of the scutellum, the metanotum, the

middle femora beneath, two lines on the hind tibie behind, and the calcaria, clear

yellow. The basal four segments of the abdomen with a reddish-yellow line on each

side, becoming wider to the fourth; the other segments with a complete belt of

obscure reddish-yellow. |

~ 8. Crabro atitlane. (Tab. IX. fig. 3, 9.)

Niger, crebre punctatus ; linea pronoti, maculis 2 scutelli, metanoto, linea tibiarum maculisque 10 abdominis

flavis ; abdomine punctato; alis hyalinis, nervis nigris. @.

Long. 6 millim.

Hab. Guatumata, Volcan de Atitlan 2500 to 3500 feet (Champion).

Head densely covered with a silvery-white pile; the clypeus with a silvery depressed

pile. Front and vertex rugosely punctured. Clypeus convex, stoutly carinate down

the centre. Ocelli in a curve, separated by a less distance from each other than they

144 HYMENOPTERA.

are from the eyes. Antenne stout, covered with a white pile; the third joint distinctly

longer than the fourth. Thorax bearing a pale pubescence ; rugosely punctured; the

pleure shining, nearly hidden by a white longish pubescence. Pronotum almost

transverse, the lateral angles acute, oblique, and closely pressed to the head; the

pleuree oblique, sharply separated, and narrowed to the prosternum. The mesonotum

is coarsely rugosely striolated; in the middle is a large wide depression, the surface

at the sides of this being raised and keeled. Scutellum convex, the base before the

fovea oblique. Metanotum shining, impunctate. Median segment finely rugose, short,

semiperpendicular at the apex ; the sides and metapleure densely covered with longish

white hair. Abdomen shining, the segments depressed at the apex; the apical half of

the petiole and the second and third segments bearing large, distinctly separated

punctures ; the other segments with the punctuation much finer and indistinct. Legs

bearing a white pubescence ; the long spur of the hind tibie reaching to the middle of

the metatarsus, which is longer than all the other joints united. The scape of the

antenne beneath, an interrupted line on the pronotum, the tubercles, two closely

united marks on the sides of the scutellum at the base, the metanotum, a line on

either side of the abdominal segments 1-5 (that on the first and second much shorter

and wider than the others), two small marks on the hypopygium, a line on the four

front femora and one on the hind tibie, and the spurs, clear yellow; the tibiz fusco-

testaceous. Wings hyaline, the stigma and nervures fuscous; the transverse cubital

nervure received before the middle of the radial cellule—more than twice the length

of the turned-up branch of the radial nervure from the stigma.

/ 4. Crabro sonorensis. (Tab. IX. fig. 4, 2.)

Niger, dense punctatus et albo pilosus; pedibus fulvis ; abdominis segmentis 3°-6™ late flavis; alis fulvo-

fumatis, stigmate ochraceo. ©.

Long. 13 millim.

Hab, Mexico, Northern Sonora (Morrison).

Vertex not depressed, bearing a uniform and moderately strong punctuation. Ocelli

in a curve, the hinder ones separated by a greater distance from the eyes than they are

from each other, and separated from each other by one and a half times the length of

the fourth antennal joint. Frontal depression shining, impunctate; the basal part

much narrowed, hardly half the width of the rest ; the apex rounded. Cheeks regular,

hardly depressed. Clypeus carinated in the centre. Third antennal joint nearly one

fourth longer than the succeeding joint. Collar with a moderately wide furrow in

the centre; the furrow behind it wide and deep; the edges oblique, slightly incised.

Mesonotum with a wide, but not very deep, depression in the centre, reaching to the

collar but not to the scutellum. There is no furrow between the epimera and the

sternum of the mesothorax ; the furrow behind the tubercles is wide and shallow, and

there is a narrower furrow with a stout keel in front of them. Scutellum moderately

convex ; furrowed at the base and apex; not twice the length of the second tarsal

CRABRO. 145

joint. Median segment at the base with a gradual slope, and with a rather deep furrow

in the centre; the apex oblique. The mesonotum bears a strong, close, and regular

punctuation; the scutellum has the punctures, if anything, larger, but more widely

apart ; at the base in the centre the median segment is punctured like the mesonotum,

the sides being irregularly striolated ; the oblique apical part is transversely striolated

and punctured; mesopleure coarsely striolated and punctured; metapleure not so

coarsely obliquely striolated; meso-metapleural division irregularly striolate. Basal

abdominal segment not so strongly punctured as the mesonotum ; the following seg-

ments more strongly and closely punctured. Pygidial area shining ; the apex and sides

bearing some large punctures. ‘Tibie sparsely spinulose; the long spur of the hind

pair about one third of the length of the metatarsus, and not much longer than the

second tarsal joint. Legs regular. Transverse cubital nervure received slightly beyond

the middle of the radial cellule. The scape of the antenne and the mandibles (except

at the base and apex) clear citron-yellow ; the collar, a line at the base and apex of

the scutellum, the tegule, tubercles, a spot behind them, a line on the base of the

second abdominal segment (not reaching to the middle), and the other segments

entirely (except the apex of the third), yellow; legs clear ferruginous, the tibie and

tarsi tinged with yellow. Clypeus covered with a long shining-golden pubescence ;

the cheeks densely clothed with a fulvous-golden, the vertex sparsely with fuscous,

pubescence. Thorax covered with a fusco-fulvous pile, longer on the metapleure and

of a paler tint. Abdomen at the base with a fuscous pubescence ; the apical segments

(especially at the apices) densely covered with a stiff golden pubescence. Femora and

coxee with a sparse longish white pubescence ; the tibiee and tarsi with a short pile.

’ 5, Crabro montivagus. (Tab. IX. figg. 5, 9; 5a, ¢ organ; 50, ¢ antenna.)

Niger, punctatus, tibiis anticis abdominisque segmentis 3°-6™ flavis; alis fulvo-fumatis, stigmate ochraceo.

Peto.

Long. 13-14 millim.

Hab. Mexico, Omilteme 8000 feet, Xucumanatlan 7000 feet, Amula 6000 feet, all

in Guerrero (H. H. Smith).

Head densely covered with fulvous, along the inner orbits and clypeus with golden,

pubescence, closely punctured ; the eyes at the apex separated by fully the length of

the second and third antennal joints united. Clypeus sharply convex in the middle.

Ocelli in a curve, separated from each other by a much less distance than they are

from the eyes; hinder ocelli situated almost beyond the eyes. The hinder edge of the

eyes situated before the middle of the head, the head itself thus being well developed

behind them, becoming gradually (but not much) narrowed posteriorly. Antenne

stout, covered with a pale down. Thorax rather densely covered with a whitish

pubescence ; closely and somewhat coarsely punctured; the scutellum more shining

and with the punctures more widely separated. Pronotum almost transverse above, the

BIOL. CENTR.-AMER., Hymenopt., Vol. II., Aprid 1891. UU

146 HYMENOPTERA.

edges obliquely truncated, not acute. There is a wide, rather deep, depression in the

anterior half of the mesonotum. Median segment furrowed in the centre at the base,

the apex transversely striolated. Mesopleure coarsely longitudinally punctured,

striolate posteriorly ; metapleure excavated, finely striolated. Abdomen finely punc-

tured, shining ; the segments at the apex fringed with golden-fulvous pubescence,

which is especially long and thick on the penultimate. Pygidial area shining, black,

marked with large, clearly separated punctures; the sides furrowed. Legs densely

pilose ; tibize spinose, the long spine reaching to the middle of the metatarsus. Trans-

verse cubital nervure received beyond the middle of the radial cellule. The scape of

the antenne, an interrupted line on the pronotum, the tubercles, a mark on either side

of the scutellum, the metanotum, the base of the mandibles, and the knees and tibie

in front, clear yellow; the abdominal segments 3-5 almost entirely yellow; the tarsi

and tegule rufo-testaceous.

The male similar to the female, but with the sixth joint of the antenne deeply

curved.

~\6. Crabro centralis, (Tab. IX. figg. 6, 29; 6a, o organ; 60, ¢ antenna.)

Niger, punctatus, capite dense fulvo-piloso ; tibiis anticis, abdominis segmentis 2°-6" flavis ; alis leviter fumatis,

nervis flavis. @Q.

Long. 10 millim.

Hab. Mexico, Atoyac in Vera Cruz (H. H. Smith); Guatemaia, San Gerdénimo

(Champion) ; Panama, Bugaba (Champion).

Head densely covered with a fulvous, the lower orbits and clypeus with golden,

pubescence, closely punctured; the hinder (and upper) edge of the eyes situated

slightly in front of a line drawn across the middle of the head. Ocelli in a curve, the

hinder ones opposite the end of the eyes, separated from each other by a somewhat less

distance than they are from the eyes. Clypeus convex in the middle. Eyes beneath

separated by about the length of the second and third antennal joints united. Thorax

densely pubescent, closely punctured. Edge of the pronotum hardly transverse, curving

backwards laterally. Median segment at the top transversely rugosely punctured; the

apex transversely striolate; at the base furrowed in the centre ; the basal area defined

by curved furrows. Pleure rugosely punctured. Abdomen shining, finely punctured ;

pygidial area hollowed and turned up at the apex, punctured. Transverse cubital

nervure received beyond the middle of the cellule. The long spur on the hind tibie

does not reach the middle of the metatarsus.

A smaller species than C. guerrerensis ; otherwise differing in having the second and

apical segments yellow ; the metanotum without yellow; the basal area of the median

segment defined laterally by furrows; the hinder ocelli separated from each other by

a rather less distance than they are from the eyes.

CRABRO. (147

“ 7. Crabro ariel. (Tab. IX. figg. 7, 2; 7a, 6 organ; 76, ¢ antenna.)

Niger, nitidus, linea pronoti, metanoto, abdominis lineis 3 tibiisque ex parte flavis; alis fuscis. 9 et d.

Long. fere 10 millim.

Hab. Mexico, Ciudad in Durango 8100 feet (Forrer), Omilteme in Guerrero 8000 feet

(1. H. Smith).

Head above densely covered with long fuscous hair, the orbits and clypeus with

silvery pubescence, closely and somewhat strongly punctured. yes behind not

reaching to the middle of the head. Ocelli in a curve, separated from each other by a

much less distance than they are from the eyes. Antennal groove shining, aciculate.

Thorax closely rugosely punctured ; scutellum longitudinally rugose. Median segment

rugose, furrowed down the centre, the basal area hardly defined. Pronotum almost

transverse above; the edges obliquely truncate. Pleuree and median segment bearing

longish white, the mesonotum fuscous, hair. Abdomen shining, aciculate. Pygidial

area strongly and closely punctured at the base; the narrowed apex with the punctures

large and widely separated. ‘The transverse cubital nervure received almost in the

middle of the radial cellule. The scape of the antenne, an interrupted line on the

pronotum, the tubercles, metanotum, a mark on either side of the basal segment, a

complete line on the second segment, the fourth and fifth segments, the four anterior

tibie in front, the greater part of the hinder tibie, the spurs, and the metatarsus

(except at the apex), clear citron-yellow; tegule piceous. The long spur on the hind

tibie reaching beyond the middle of the metatarsus.

This species is much more shining than any of its allies.

. 8. Crabro hector. (Tab. IX. fig. 8, 2.)

Niger, crebre punctatus, clypeo aureo-piloso ; metanoto abdominisque maculis 6 flavis ; alis fumato-hyalinis. 9.

Long. 11-12 millim.

Hab. Mexico, Amula in Guerrero 6000 feet (H. H. Smith).

Front and vertex with a close finely rugose punctuation ; the front broadly depressed ;

frontal furrow shining, of nearly equal width throughout, a furrow running to it from

the ocelli. The ocelli almost in a triangle ; the hinder ones separated from each other

by about the length of the fourth antennal joint, and from the eyes by a somewhat less

distance than the length of the third—by a greater distance than they are from each

other. Cheeks normal. Clypeus sharply keeled in the centre. The third antennal

joint is nearly as long as the fourth and fifth joints united, but distinctly thinner than

they are, and dilated at the apex. Collar transverse, the edges obliquely rounded,

furrowed in the centre. Mesonotum finely rugosely- punctured, and bearing three

longitudinal keels in the centre at the base. Scutellum longitudinally rugose, as long

as the second tarsal joint. Median segment at the base with large irregular punctures;

with some stout striations in the centre on either side of the narrow, not very distinctly

uu 2

148 HYMENOPTERA.

defined, furrow; the apex strongly transversely striolated. Mesopleure coarsely

longitudinally punctured; metapleure finely longitudinally rugose. There is no

furrow between the epimera and sternum of the mesothorax. Meso-metapleural

furrow crenulate, wide. Abdomen shining, very finely and minutely punctured,

almost aciculate. Pygidial area hollowed, aciculated and opaque at the apex. Legs

normal, covered sparsely with soft white hair; the tibial spines short, blunt, stout;

calcaria white ; the long spur of the hind tibie reaching nearly to the middle of the

metatarsus ; the tarsal joints whitish at the apex beneath. Transverse cubital nervure

received distinctly before the middle of the radial cellule. The scape of the antenne

and the mandibles (except at the base and apex) citron-yellow; the collar, tubercles,

metanotum, and a line on the sides of the abdominal segments 1—5 reddish-yellow.

Clypeus covered with a dense golden pile; the cheeks and vertex with a long fuscous

pubescence; thoracic pubescence longish and pale; penultimate and last abdominal

segments fringed with long stiff golden hair.

os) Pile He

I . . 6 ro 08

9. Crabro costaricensis, (Tab. IX. fig. 9, 2.) pe So pt AH br he. 26 thes

Long. 8 millim.

Hab. Costa Rica, Rio Sucio (Rogers).

Head opaque, finely and closely punctured, clothed with short pile. Ocelli in pits,

almost in a triangle; the hinder ocelli, if anything, separated by a greater distance

from each other than they are from the eyes. An oblique furrow runs from the eyes

to the hinder ocelli; and a broader one runs from the front ocellus to the frontal

depression. Clypeus moderately convex, bluntly keeled down the centre; the apex

depressed, margined, slightly incised in the middle. Thorax opaque, like the head;

the pronotum wide, rounded, the sides obliquely truncated; the top not much

elevated above the prosternum; mesonotum furrowed down the centre; the pleure

opaque, minutely and closely punctured ; an oblique furrow running from the point of

insertion of the fore wings to the propleure. Scutellum shining, punctured. Central

area of the median segment distinctly separated, shining, a wide margined aciculate

hollow in its centre, the sides strongly striolated ; the rest of the segment opaque, finely

and closely punctured, densely covered with longish silvery hair; the apex of the

segment’ furrowed in the middle, obliquely sloped. Abdomen shining, aciculate.

Legs stout, covered with pile; the tibiz stoutly spinose ; the long spur of the hind

tibiee reaching to the middle of the metatarsus, which is grooved and somewhat longer

than the following three tarsal joints united. The transverse cubital nervure is received

almost in the middle of the radial cellule. The scape of the antenne, an interrupted

line on the pronotum, the tubercles, scutellum, post-scutellum, a complete band on the

first abdominal segment and a widely interrupted one on the second and third segments,

CRABRO. 149

and the spurs, yellow. The tibial spines are fulvous; the apices of the tarsal joints

testaceous. ; _ - , 7

3 RANE a! dehaminnn) Lich, treks og CCL Rar Vana”)

10. Crabro constances. (Tab. IX. figg.10, 2; 10a, ¢ organ; 106, ¢ antenna.) Aaa Kant 3

Niger, punctatus, tibiis, femoribus posterioribus subtus basique tarsorum flavis; alis fumatis, nervis nigris. % <

: ayy A 2 Lak

e et 3 . fi fe £ \ : gk e g * ie gre BAe oO we

‘ he ’

Long. 10-13 millim.

Hab. Mexico, Temax in North Yucatan (Gawmer); Panama, Volcan de Chiriqui

2000 to 3000 feet (Champion).

Front excavated, shining, impunctate, without a central furrow. Ocelli hardly

forming a triangle; the posterior ocelli separated from each other by nearly the same

distance that they are from the eyes,—by nearly the length of the third antennal joint.

Vertex strongly punctured; the orbits behind pitted with large round punctures ;

beyond this punctured space the head is impunctate; a lance-shaped aciculate fovea

runs from near the hinder ocelli almost to the eyes; clypeus broadly carinate in the

middle, the apex projecting. Head above sparsely pilose ; the clypeus densely covered

with a golden pile. Scape of the antenne yellow; the flagellum from its second joint

opaque, owing to a dense pile; the third joint about one quarter longer than the

‘fourth. Pronotum margined in front; concave, the edges projecting, sharply trian-

gular. Pronotum coarsely rugosely punctured; the base of the mesonotum less

coarsely and closely rugose, its apex with large, separated punctures; mesopleure

shining, pitted with large scattered punctures, except below the point of insertion of

the wings, this being also the case with the scutellum, the base of which is impunctate ;

metanotum more closely punctured; median segment coarsely reticulated, the apex

with an oblique slope; metapleure excavated, and marked with oblique widely sepa-

rated strie. Basal segment of the abdomen with a few scattered punctures; the

second and third segments depressed at the base, finely transversely striated, the middle

punctured, the apex finely transversely rugosely punctured; the other segments bear

scattered punctures, and, at the apex, are finely transversely rugosely punctured.

Pygidial area shining, punctured ; the lateral tuft of hair thick, long, fulvous. Legs

sparsely haired; the long spur of the hind tibie not reaching to the middle of the

metatarsus, curved, and not twice the length of the second joint, which is hardly the

length of the third and fourth joints united, the latter subequal. The anterior

femora on the outer side are shining, impunctate, flat, the sides distinctly margined

and furrowed, the furrows uniting at the base in a rounded angle; the anterior tibie

are also margined down the sides; the hind femora are punctured in front. The-

transverse cubital nervure is received slightly before the middle of the radial cellule.

The male has the edges of the collar marked with yellow; the outer orbits of the

eyes bearing a golden pubescence; and the antenne thicker, simple, with the third and

fourth joints subequal.

150 HYMENOPTERA.

11. Crabro guerrerensis. (Tab. IX. fig. 11, 2 .)~ Cvagapes Sie Ute

Niger, aciculatus ; capite thoraceque opacis, abdomine nitido; alis fumatis. orate Pom abiter WBN,

Long. 7-8 millim. WE? yess | vse)

Hab. Mzxico, Amula 6000 feet, Chilpancingo 4600 feet, both in Guerrero (H.

Smith).

Head shining, finely punctured, alutaceous, sparsely haired, the cheeks and clypeus

densely covered with silvery pubescence. Vertex depressed, and with a shallow furrow

running down from the ocelli; front rather widely excavated, shining, impunctate.

Clypeus broadly keeled in the centre. Ocelli in a triangle; the posterior ocelli

separated by a little more than the length of the second antennal joint, and by one

half more from the eyes,—by a much greater distance from the eyes than from each

other. There is a narrow keel behind the ocelli, and an indistinct shallow furrow

runs obliquely from them to the eyes. Pronotum transverse in front, the lateral

angles somewhat obliquely rounded, the middle indented; propleuree deeply and widely

excavated, finely and closely punctured ; mesopleure coarsely aciculated, semiopaque ;

scutellum shining, finely punctured; the propleure shining, almost impunctate. Basal

area of the median segment large, wider than long, shining, impunctate; the centre

furrowed; the rest of the segment shining, finely punctured; the metapleure finely

and closely longitudinally striated; apex of the median segment with a gradual

rounded oblique slope. Petiole shining, impunctate, gradually, but slightly, enlarged

towards the apex, a little longer than the second segment. ‘The second and third

segments obscurely and finely aciculate; the penultimate segment densely pilose ;

the hypopygium wide, sharply narrowed towards the apex, shining, the base punc-

tured. Legs covered with a white pubescence; the long spur of the hind tibie

rather more than three-quarters of the length of the metatarsus. The transverse

cubital nervure received about one fourth before the middle of the radial cellule.

The third joint of the antenne is longer than the fourth, which, again, is longer than

the second.

Y 19. Crabro yucatanensis. (Tab. IX. fig. 12, 9.)

Niger, antennis rufo-testaceis; scapo antennarum, geniculis tarsisque flavis; nitidus, segmento mediali opaco,

rugoso; clypeo 4-dentato; alis hyalinis, nervis nigris. 9°.

Long. 4°5 millim.

Hab. Mexico, Temax in N. Yucatan (Gaumer).

Vertex impunctate; the front roughened ; sparsely haired. Clypeus with a distinct

narrow keel down the centre; the apex almost transverse, and with four stout teeth—

the two inner obtuse at the apex, the outer triangular. Frontal groove wide, rounded

at the top. Ocelli in a subtriangular curve; the hinder ocelli separated from the eyes

by a somewhat greater distance than they are from each other. Eyes coarsely faceted.

Antenne stout, the scape yellow; the flagellum rufous, covered with a pale microscopic

CRABRO. 151

pile ; the third and fourth joints subequal and a little longer than the second, which is

globular. Mandibles yellowish, black at the base and apex. Pronotum above trans-

verse, the lateral angles bluntly acute ; the slope almost perpendicular ; the prosternum

separated distinctly from it. Mesonotum aciculate or finely punctured in front, a broad

depression at the base; the mesopleure without punctures, shining; the furrow below

the tegule wide, crenulated; in the centre is, below the point of insertion of the wings,

a large, oblique, somewhat pear-shaped depression or large fovea. Scutellum finely

punctured, shining. Metanotum finely rugose. Median segment finely rugose; the

base rounded, the apex oblique, with a large oblong fovea in the middle. Metapleure

excavated, shining, almost impunctate. The pronotum (except in the centre), the

tubercles, a spot on either side of the scutellum at the base, and a narrow lateral line

beyond them, clear yellow. Abdomen shining, impunctate; the apical segments sparsely

covered with whitish hair. The hypopygium almost twice longer than broad ; densely

covered with stiff depressed bristle-like silvery-white hair; the apex rounded, not half

the width of the base. Legs covered with a silvery pubescence; the knees, spurs, tarsi,

and anterior tibie yellow; the middle tibiz at the apex, the hinder tibie for the greater

part, brownish ; the long spur of the hind tibie reaches nearly to the apex of the

metatarsus. The transverse cubital nervure is received almost twice the length of

the curved-up part of the radial nervure from the stigma, 7. e. considerably before

the middle of the cellule. The wings have a fuscous or smoky tinge; the stigma

is fuscous.

M13. Crabro montezuma. (Tab. IX. figg. 13,9; 13a, ¢ antenna.) Dehn ing(1n abalone)

Niger, nitidus, tarsis, tibiis anterioribus basique tibiarum posticarum flavis; alis hyalinis. @ et ¢ 3 Os oan Li nag CAL

Long. fere 5 millim. Lana PRA Foals. 2 Tay L

Hab. Mexico, Chilpancingo in Guerrero 4600 feet (1. H. Smith). pF \G So)

Antenne stout, thickened gradually towards the apex, beneath brownish ; joints 2—4

subequal. Head large, cubital. ‘The ocelli in a curve; the posterior ocelli in pits,

separated from each other by nearly double the distance they are from the eyes, which

do not reach to them. Clypeus and cheeks covered closely with a silvery pubescence.

Thorax shining, impunctate; the pronotum at the edges slightly curving towards the

head, this part being yellow and separated from the posterior and larger portion,

which is rounded laterally. Basal area of the median segment defined, longitudinally

striolated; the apical region deeply excavated, finely transversely striated. Pleure

shining, impunctate, the divisions crenulate ; a large fovea in the centre of the meso-

pleure. Abdomen shining, as long as the thorax; the apical segment rufous. Wings

hyaline, the nervures black ; the transverse cubital nervure received considerably before

the middle of the cellule.

The male has the antenne thicker; the second joint projects obliquely, and becomes

larger towards the apex; the third joint is shorter, and with the fourth forms an incision.

152 HYMENOPTERA.

The yellow line on the pronotum is largely separated in the middle; there is a yellow

mark on either side of the scutellum ; and there is more yellow on the tibie.

“14, Crabro alpestris. (Tab. IX. fig. 14, fore leg, ¢ .) — jets al BL Boy 6

Niger, thorace immaculato (metanoto excepto); scapo subtus tibiisque flavo-lineatis; alis fuscis. . aun s D d b,

Long. 8 millim. 4. Bp lo, 40)

Hab. Mexico, Tepetlapa in Guerrero 3000 feet (H. H. Smith).

Head closely punctured, sparsely pilose; the clypeus and cheeks covered with silvery

pubescence. Ocelliina triangle; the posterior ocelli separated from each other by a little

more than the length of the third antennal joint, and by a somewhat greater distance

from each other. Clypeus keeled in the centre, the apex incised. Pronotum brown,

transverse, the edges oblique, projecting in front into a triangular tooth; the pleure

excavated, finely punctured, behind shining. Mesonotum finely rugosely punctured ;

the scutellum with the punctures slightly more widely separated ; mesopleure shining,

bearing fine, distinctly separated punctures, the oblique furrow distinct. Basal area

of the median segment depressed in the centre, and with an oval depression on either

side of the base, the keels separating them being raised; the rest of the median

segment densely covered with white hair and rugose, the apex with an almost oblique

slope; the metapleure not excavated, finely longitudinally punctured. Petiole almost

twice longer than wide, shining, with two small yellow marks at the apex. The

other segments are aciculate; segments 2-4 have an elongated yellow mark on either

side; the fifth segment is yellow, black at the base and apex, and with two small

round black marks in the yellow; the sixth segment is yellow, except for two small

black marks in the centre; the apical segment is densely covered with silvery hair ;

the hypopygium is convex, rounded at the apex. Legs sparsely haired; the knees, the

anterior femora beneath, the anterior tibie and tarsi, the middle tibie and tarsi

beneath, and the posterior tibie entirely behind and laterally at the apex, yellow.

The Jong spur of the hind tibie reaches slightly beyond the middle of the metatarsus.

For front tarsus see figure (fig. 14). The transverse cubital nervure is received a little

before middle of the radial cellule.

N °

15. Crabro alticola. (Tab. IX. figg. 15, ¢ organ; 15a, fore leg, 3.) — Caf ae:

Niger, pronoto bilineato, scutello metanotoque flavis ; alis fusco-hyalinis. 9 et g. Col eb Z y )

Long. 11-12 millim. J > TH x g

Hab. Mexico, Ciudad in Durango 8100 feet (Forrer). om

Oo 10,14 Su)

Head closely and finely punctured ; covered with a longish fuscous, the clypeus and

cheeks with silvery, pubescence; frontal furrow wide and deep. Clypeus somewhat

convex in the centre, the apex projecting outwardly, and with a wide and shallow

incision in its middle. Ocelli in a curve, separated from each other by about the

CRABRO. 153

length of the third antennal joint, and by a somewhat greater distance from the eyes.

Antenne stout, densely covered with a pale pile, the third joint more than double the

length of the second, and one-third longer than the fourth. Pronotum with a gradual

‘slope to the head; the top transverse, with the angles oblique; the pleure behind

deeply excavated. Mesonotum closely and somewhat strongly punctured, the central

furrow wide; mesopleure more closely punctured than the head, the furrow crenulated.

Scutellum shining, very slightly punctured, and with an olivaceous tinge. Central area

of the median segment with the central furrow wide, and bearing some stout, irregular,

almost oblique, keels; the rest of the median segment coarsely and closely transversely

rugose, and covered densely with longish white hair. Metapleure finely, closely punc-

tured, much more closely and strongly than the mesopleure. Petiole wide, gradually

dilated to the apex, a little shorter than the second segment, shining, impunctate.

The penultimate segment closely punctured, densely covered with a silvery pubescence.

Pygidial area longish, gradually narrowed to the apex, which is rounded and half the

width of the base; densely covered with stiff, depressed, fulvous-golden hair, and with

scattered punctures. On the petiole, near the apex, there is a broad yellow stripe with

a square indentation in the middle behind; the second, third, and fourth segments bear

an elongated oval mark on each side. Legs covered with a pale silvery pubescence,

which is rather long on the coxe, trochanters, and femora; the tibial spines glistening

white—the inner spur blackish, the outer one partly testaceous, the longer spur fully

two-thirds the length of the metatarsus; there is a yellow streak on the tibize behind.

Cubital nervure received slightly beyond the middle of the wing.

The male wants the yellow on the thorax (except a small irregular mark on the

metanotum), and has the mark on the petiole interrupted. For anterior tibie and

tarsi, see fig. loa.

V 16. Crabro peltista. (Tab. IX. figg. 16,2; 162,¢ organ ; 160, 3 antenna;

16 ¢, d, fore leg, 3 .) Cub ld Ay ime) Xe « | Po? 928 Lee,

Crabro (Thyreopus) peltista, Kohl, Zool. Jahrb, iii. p. 586°. he& < ° 26. BS y t0, (9 So)

Hab. Mexico, Chilpancingo 4600 feet, Omilteme 8000 feet, Amula 6000 feet,

Xucumanatlan 7000 feet, all in Guerrero (H. H. Smith), Orizaba!; Guaremata, San

Gerénimo, Duefias (Champion).

Apparently a common species. The markings on the fore tarsi vary somewhat.

selin..) Be

V 17. Crabro falvo-hirtus. (Tab. IX. fig. 17.) c Boe TR 1 Pr, Ss 4 } S

Niger, petiolo pedibusque brunneis; alis fumato-hyalinis, stigmate testaceo. ha

Long. 9 millim. tale} vA pentt Sy p+ | 7, (950)

Hab. Mexico, Xautipa in Guerrero (H. H. Smith).

Head shining, aciculate, covered with a pale pubescence; the clypeus with silvery

BIOL. CENTR.-AMER., Hymenopt., Vol. II., November 1891. XX

‘154 HYMENOPTERA.

pubescence. Front not much depressed beyond the central furrow, which becomes wider

and deeper beyond the middle. Ocelli in shallow pits, separated from each other by

about the length of the third, and from the eyes by the length of the second and

third antennal joints united, and forming a triangle. The fovea at the eyes opposite

the ocelli straight, narrow. Clypeus projecting in the middle, not sharply carinate; the

apex of the projecting part protruding beyond the rest, and ending in a rounded point.

Antenne covered with a pale pubescence; the third joint a little longer than the

fourth. Pronotum roundly convex, the sides rounded. Mesothorax shining, obscurely

shagreened, covered with a short pale fulvous pubescence, which is longest on the

sternum. <A shallow central furrow on the mesonotum. Median segment with a

gradually rounded slope, obscurely aciculate, the centre furrowed, the sides keeled,

the apex with some stout transverse strie. Metapleure covered with a fulvous

pubescence, finely rugulose. Petiole narrow, the apex nodose, longer than the second

and third segments united. The second segment a little longer than the third. The

petiole and the apex of the second segment piceous-red; the sides of the segments

covered with a fulvous pubescence. Pygidial area wide, a little. longer than broad,

bearing large punctures; the apex depressed, impunctate, reddish. Legs covered

with .a pale pubescence, brownish-testaceous; the coxe, the trochanters above, the

anterior femora above and beneath, the middle femora almost entirely, and the hinder

tibie behind, blackish; the long spur of the hind tibiz three-fourths the length of the

metatarsus, stout; the metatarsus slightly longer than the following two joints united.

- Transverse cubital nervure received distinctly before the middle of the radial cellule.

18. Orabro maculitarsis. (Tab. IX. fig. 18, 9.) Cuseerromeel Pagrobiayy abner)

Niger, apice petioli brunneo, tibiis subtus basique tibiarum flavis. 9. aA La Oa 0g (BL. we)

Long. 8—9 millim. p “WOR Ashe ob ne: 4S p- 1), \as0).

Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith).

Head aciculate, covered closely with a blackish pubescence; the cheeks and clypeus

with silvery pubescence; the frontal depression glabrous, shining, impunctate; ocelli

in a triangle, situated in pits; a narrow furrow in their centre; the frontal furrow

narrow and shallow; there is a shallow semicrescentic fovea opposite them almost

touching the eyes; hinder ocelli placed slightly behind the eyes, separated from

each other by a less distance than they are from the eyes, the latter being fully

the length of the third antennal joint; clypeus moderately projecting, carinate down

the middle; cheeks normal. Antenne covered with a pale microscopic pile; the

second and third joints as long as the fourth and fifth united. Prothorax transverse,

the sides rounded; the angles with an oblique wide furrow on the lower side. Meso-

notum coarsely aciculate, opaque, indistinctly and shallowly furrowed down the centre ;

the mesopleuree more shining, less strongly longitudinally aciculate ; the furrow below

the tegule is wide and deep, and bears short stout keels. Triangular area of the

CRABRO.—OXYBELUS. | 155

median segment shining, minutely aciculate; the central furrow wide, ‘strongly

aciculate, deep, but not so wide as. the furrow bordering the area; the rest of the

segment opaque, transversely aciculated, densely covered with white pubescence.

Metapleure aciculate, the furrow keeled like the mesopleure. Petiole shining, about

one-fourth longer than the second segment, becoming ‘gradually thicker towards the

apex, which is not nodose*; the rest of the abdomen aciculate, opaque, the segments

at the apex and laterally (the last entirely) densely covered with a short golden pile.

Pygidial area with a raised triangular space at the base, gradually narrowed to the

apex, shining, impunctate, except the basal space. Legs normal. _ |

v 19. Crabro jason. (Tab. IX. fig. 19, hind leg, 6 Cpe ae es (Ane inbo \ rake

Niger, subopacus ; alis fere hyalinis, nervis nigris. 9. KR Oe. on | {eR O° Sn af), ae hee: 2D,

Long. fere 7 millim. A, She sles, ay Ae ASAS S)

Hab. Mexico, Xucumanatlan in Guerrero 7000 feet (H. H. Smith). |

Antenne moderately stout; the third joint distinctly longer than the fourth. Head

cubital, longer than wide, concave posteriorly, narrowed behind the eyes; the occiput

margined; the clypeus convex, keeled in the centre, the apex broadly rounded.

Ocelli in a triangle, the hinder ones separated from each other by a slightly less

distance than they are from the eyes. Mandibles broadly yellow, the apex piceous.

Thorax alutaceous; the pronotum almost transverse, the apex oblique. Basal area of

the median segment longitudinally striolated ; a crenulated furrow leading from its

apex to the excavated apical portion, which is finely transversely striated. A curved

crenulated furrow leads down from the tubercles ; and there is a round small fovea at the

apex of the mesopleure in the middle. Abdomen longer than the thorax, subpetiolate ;

the petiole becoming gradually thicker towards the apex, shining, impunctate; the

apex with a short pile. Legs stout, the posterior tibie dilated, especially towards the

apex; the long spur of the hind tibie reaching nearly to the apex of the metatarsus,

which is shorter than the other joints united; the hind tibie shorter than the tarsi ;

the anterior tarsi inclining to piceous in colour.

The male has the antennal joints thicker and more dilated beneath; and the hind

tibie are more dilated and longer than the tarsi, their base being white. _

Subfam. OXY BELINE.

OXYBELUS.

Oxybelus, Latreille, Hist. Nat. Crust. et Ins. xiii. p. 307 (1805).

Nearly one hundred species are known of this well-marked genus. ‘Two species only

have been recorded as yet from south of our region. | | |

* In the table on p. 142, line 10 from top, for “ petiole nodate at the apex,” read “ petiole nodate or not at

the apex.”

Xx 2

156 _ HYMENOPTERA.

J 1. Oxybelus mexicanus.

‘Oxybelus mexicanus, Robins. Trans. Am. Ent. Soc. xvi. p. 83°.

Hab. Mexico}.

d 2. Oxybelus bugabensis. (Tab. IX. figg. 20, thoracic process; 20a, lateral

view of the same; 208, thoracic process, var.?)

Niger, linea pronoti, lineis abdominis segmentis 1°-5™ flavis, segmento 6° rufo ; alis fusco-hyalinis. 9.

Long. 5 millim.

Hab. Panama, Bugaba (Champion).

Black, with a greenish-coppery hue; the mandibles reddish ; the pronotum, tubercles,

the scutellar lamine, a broad line (much contracted in the middle)-on the first

abdominal segment, a narrower (not contracted) line on the second to the fifth

segments, and a line on the base of the middle femora beneath, yellow; the tegule

piceous; the front tibiee rufo-testaceous, the spurs pale; the apical abdominal segment

piceous-red ; wings subhyaline, the nervures fuscous. Head very closely punctured,

densely covered with a short pale pubescence; the front slightly depressed in the

middle: a not very distinct furrow runs down from the ocelli to the antenne, where

it bifurcates, the forks being wider, deeper, smooth, and shining. Eyes margined.

Antenne stout, densely pilose; the flagellum beneath at the apex brownish. Thorax

more strongly punctured than the head, and with the punctures more widely apart.

Mesonotum with a wide and deep furrow in the centre in front; and there is a much

smaller furrow on either side of this; scutellar keel distinct, the depression at the base

of the scutellum wide and deep. Median segment shining, reticulated. ‘here is a

wide and deep furrow below the tegule on the mesopleure, and a shallow fovea behind

it. The pubescence on the thorax short, close, and dense; that on the pleure longer

and whiter. Abdomen shining, finely punctured; pygidial area more strongly punc-

tured, laterally keeled. Legs rather closely pilose; the spines on the hinder tibie

stout, fuscous towards the apex. Squama broader than long, the sides acutely spined,

the apex roundly incised; the spine is twice longer than broad, slightly incised at

the apex, hollowed, and rising in a curve upwards, hardly dilated at the tip.

A specimen from Temax is either a variety of O. bugabensis, or belongs to a distinct

species. It agrees in size and colour with O. bugabensis, except that the yellow line on

the collar is interrupted, the squama is only yellow laterally, and the yellow band on

the first abdominal segment is not dilated at the sides; all the tibiz are broadly lined

with yellow; the pubescence on the face is denser, longer, and bright silvery; the

mesonotum is duller, more pubescent, and has a wider and deeper depression. ‘There

is also a slight difference in the space of the thoracic process (see fig. 20 4).

OXYBELUS. 157

VA e ° , °

3. Oxybelus longispina. (Tab. IX. fig. 21, thoracic process.)

Niger, linea pronoti, lineis abdominis segmentis 1°-5™, femoribus tibiisque subtus flavis, abdominis segmento 6°

nigro; alis fere hyalinis, nervis stigmateque fusco-testaceis. ¢,

Long. 53 millim,

Hab. Mexico, Temax in North Yucatan (Gaumer).

Black, with a slight coppery hue; an interrupted line on the pronotum, the tubercles,

the lamine, a line on the four anterior femora beneath at the base, and a narrow line

on the apex of the abdominal segments, yellow; the tibie rufo-testaceous, lined with

yellow in front; the tarsi obscure testaceous. The lower part of the head covered

with a dense silvery, the upper part with a golden pubescence. Clypeus incised, the

sides ending in stout teeth.» Antenne densely pilose, the apex brownish. Mandibles

piceous-red. ‘Thorax closely punctured, and covered with a whitish pubescence;

scutellar keel stout, the scutellum also with a transverse keel at the apex, the space

beyond this being depressed and crenulated. Median segment transversely striolated,

with a V-shaped keel in the centre. Mesopleure with a narrow shallow furrow below

the tegule, and there is a wider transverse furrow at the bottom. Abdomen finely

punctured, the basal segments deeply depressed anteriorly; apical segment obscure

rufous, punctured, the apex transverse ; the segments at the apex bearing a sparse pale

pubescence; venter covered with longish pubescence, punctured. Squama with a

curved tooth laterally; the spine more than twice longer than broad, becoming broader

towards the apex, which is deeply and broadly incised.

/ 4. Oxybelus aztecus. (Tab. IX. figg. 22; 22a, thoracic process.)

Niger, lineis 2 pronoti, maculis 10 abdominis, tibiis tarsisque flavis; alis fusco-hyalinis.

Long. 4 millim.

Hab. Muxico, Vera Cruz (H. H. Smith).

Black, densely covered with a silvery pubescence; the scape of the antenne beneath,

a broad interrupted line on the pronotum, the tubercles, a small mark on the side of

the scutellum, the edges of the lamine, two lines on the abdominal segments 1—4, the

knees, and the four anterior tibie in front, yellow; mandibles yellow at the base,

piceous in the middle, black at the apex; apex of antenne rufo-testaceous; tegule

piceous; apical segment and the apex of the fifth ferruginous; the anterior tarsi rufo-

testaceous. Head closely and rather strongly punctured, the pubescence on the lower

part long and silvery ; clypeus convex; the furrow from the ocelli indistinct. Eyes

indistinctly margined in front. Thorax more strongly punctured than the head; the

pronotum above transverse, margined, the sides obliquely curved ; ‘an indistinct furrow »

on the mesonotum in front; scutellar keel not very stout. Median segment finely and

closely rugose, two keels in the centre, enclosing a V-shaped, shining, impunctate area ;

the edges also keeled. Mesopleure with a small shallow depression below the tegule.

Abdomen punctured; the first segment depressed at the apex, the second at the base

158 | HYMENOPTERA.

and apex, the third at the apex; the apical segment rugose, covered with depressed,

reddish, stiff hairs; the other segments with a silvery pile at the apex laterally. Legs

covered with a whitish pubescence; the tibial spines pale; the apical joint of the

tarsi testaceous. Squama longer than broad (longer than in any other species known

from our region), the lateral edge > triangular ; the spine not twice longer than‘ broad,

the apex incised. |

, 5. Oxybelus argenteopilosus. (Lab. IX. figg. 23; 23a, thoracic process.)

Long. 44 millim. 9. |

Hab. Mexico, Venta de Zopilote in Guerrero 2800 feet (HZ. H. Smith).

Agreeing with 0. aztecus in having the bands on the abdomen broken, and also in

the rest of the coloration, except that it has a spot on either side of the scutellum, and

the hind tibia are only yellow at the base, and the hind tarsi are entirely black. It

also has a furrow along the inner orbits of the eyes near the ocelli; the mesonotum is

without depression ; and, as will be seen from our figure, the form of the thoracic

process is very different, the squama (and the spine also, this being shorter and broader

than in the other species of the genus known to me) much shorter and broader.

Fam. POMPILIDZ.

The difficulty of defining and limiting the genera in this large family is considerable.

The arrangement here adopted is that followed by Kohl, Verh. zool.-bot. Ges. Wien,

1884.

CEROPALES.

Ceropales, Latreille, Préc. Caract. gén. des Ins. p. 123 (1796) ; Kohl, Verh. zool.-bot. Ges. Wien,

xxxiv., Abhandl. p. 51 (1884).

This genus, chiefly on account of the difference in the structure of the male genital

armature, is referred by Radoszkowski [Bull. Mose. nouv. sér. ii. p. 489 (1889)] to a

distinct family.

1. Ceropales agilis. (Tab. X. fig. 1, 2.)

Ceropales agilis, Smith, Journ. Ent. ii. p. 269°.

Hab. Mexico!, Amula in Guerrero 6000 feet, Teapa in Tabasco (#7. H. Smith),

Orizava (Sumichrast), Temax in North Yucatan (Gawmer); Guatemata, San Geronimo,

Capetillo (Champion) ; Nicaragua, Chontales (Belt).

2. Ceropales albopicta.

Ceropales albopicta, Cresson, Proc. Bost. Soc. Nat. Hist. xii. p. 378°.

Hab. Mexico, Orizaba (Sumichrast!); Panama (Boucard).

. CEROPALES. | 159

8. Ceropales femoralis. -

Ceropales femoralis, Cresson, Proc. Bost. Soc. Nat. Hist. xii. p. 878".

Hab. Mexico, Orizaba (Sumichrast 1).

4. Ceropales mexicana.

Ceropales mexicana, Cresson, Proc. Bost. Soc. Nat. Hist. xii. p. 377°.

Hab. Mexico, Orizaba (Sumichrast 1).

5, Ceropales azteca. (Tab. X. fig. 2, 2.)

Nigra, flavo-maculata, pedibus fulvis ; alis hyalinis, stigmate pallide testaceo. 9.

Long. 6 millim.

Hab. Mexico, Amula in Guerrero 6000 feet, Atoyac in Vera Cruz (H. H. Smith),

Temax in North Yucatan (Gauwmer).

Head shining, aciculate, the cheeks, clypeus, and labrum covered with a silvery

pubescence ; the ocellar region raised ; the anterior ocellus in a pit; the space between

and above the antenne distinctly projecting; the clypeus at the apex slightly arcuate ;

the labrum rounded, the sides oblique; the eyes at the top arcuate; the ocelli ina

curve, the hinder pair separated from each other by a less distance than they are from

the eyes; a furrow runs down from them; the occiput convex. Thorax bearing

widely separated shallow punctures, the median segment alutaceous; the prothorax

arcuate in front, bulging out laterally at the base; scutellum raised, not much narrowed

towards the apex. The median segment with a small triangular depression at the base,

from which runs a wide channel; broad at the base, narrowed at the apex. Abdomen

not much longer than the thorax, sessile, curved. Antenne stout, a little thickened

towards the apex; the joints closely united. Radial cellule elongate, narrow,

lanceolate ; the second cubital cellule at the top distinctly longer than, at the bottom

nearly as long as, the third cellule; the third cellule at the bottom more than twice as

long as at the top; the first transverse cubital nervure curved; the first recurrent

nervure received in the apical fourth of the cellule—at a little less distance from the

apex that the second is received from the base of the cellule. Legs elongate, especially

the hind tarsi. Black; the clypeus and face, the inner orbits broadly, the outer orbits

narrowly, the edge of the pronotum, the tubercles, a spot on the scutellum, the meta-

notum, a mark on the median segment in front of the coxe, an incised elongate spot

on the side of the first segment, a transverse one at the apex, a line on the apices of

the other segments, incised at the sides in front, the coxe in front and a line on the

hinder pair at the side, and the scape beneath, yellow.

The male is similarly coloured to the female, except that the labrum is yellow, the

first abdominal segment has only a somewhat oblong mark at the sides, the lines on

the three following segments are broken up into three, and the following two segments

have an entire mark in the centre; it has the apical segment wide, broadly incised.

160 HYMENOPTERA.

This species may be referable to C. mexicana, Cresson ; but the latter is stated to

have the tips of the femora, the anterior tibiz in front, the base and apex of the middle

tibie, and the base of the four anterior tarsi, lemon-yellow; the apex of the median

segment with a golden-sericeous pile (in our species silvery); and the wings pale

yellowish-hyaline. ;

6. Ceropales fumipennis. (Tab. X. fig. 3, ¢ organ.)

Nigra, clypeo, labro, coxisque anticis albis ; alis fusco-fumatis. <¢.

Long. 9 millim.

Hab. Panama, Bugaba (Champion).

Eyes large, converging beneath, slightly curved above; ocelli in a curve, separated

from each other by a greater distance than they are from the eyes. Head convex

behind, closely punctured; a narrow furrow runs down frcem the ocelli; the clypeus

transverse, projecting ; the face and cheeks densely covered with a silvery pubescence ;

the white colour extends halfway up the inner orbits; the palpi fuscous. Antenne

stout; the third joint somewhat longer than the fourth; the scape beneath white and

covered with silvery hair. ‘Thorax alutaceous, covered with a silvery pile; the pro-

notum subquadrate, concave in the middle laterally, anteriorly arcuate; scutellum

gibbous, narrowed towards the apex; median segment finely punctured, the apex finely

transversely striated. Abdomen shining, sessile, shorter than the thorax ; the second

segment at the base laterally with a somewhat triangular white spot ; the third seg-

ment edged with white above; the apical segment also white. Legs very elongate; —

the coxe and femora densely covered with white, the tibie and tarsi with black,

pubescence; the tibie and tarsi sparsely spined, the four anterior spines pale, the

posterior spines black; the claws reddish, bifid. The second cubital cellule at the top

a little longer, at the bottom considerably shorter, than the third cellule; the first and

second transverse cubital nervures straight, oblique, the third elbowed about the middle,

making the third cellule at the top a little longer than the space bounded by the

second transverse cubital and second recurrent nervures; the first and second recurrent

nervures received a little before the middle.

In one example the white markings on the abdomen are obliterated, or nearly so;

this specimen has the base of the wings and the first cubital cellule subhyaline, and the

four anterior spurs blackish.

7. Ceropales chiriquensis. (Tab. X. fig. 4, wing.)

Long. 10 millim.

Hab. Panama, David (Champion).

Black; the clypeus, the face and orbits broadly, two large marks on the third abdo-

minal segment, the apical segment, and a line on the pronotum behind, white; wings

CEROPALES.—PSEUDAGENIA. 161

subhyaline, a band along the basal nervure and a broad one occupying the radial and

second and third cubital cellules fuscous. Head shining, finely and closely punctured ;

the orbits and clypeus bearing a short silvery pubescence ; the eyes scarcely arcuate at

the top; the apex of the clypeus transverse, the sides rounded ; ocelli in a curve, the

hinder pair almost opposite the top of the eyes, and separated from each other by a

distinctly greater distance than they are from the eyes. Antenne covered with a close

pile; the apical joints curved; the third and fourth joints subequal; the scape

brownish beneath. Thorax aciculate, the median segment alutaceous; the apex of the

pronotum broadly arcuate ; the scutellum narrowed towards the apex, where there is a

small white spot; the median segment with a gradual rounded slope. Abdomen

sessile, shorter than the thorax. Legs stout, elongate; the tibie and tarsi thickly

covered with a blackish pubescence; the long spur of the hind tibiz reaches about the

length of the fourth tarsal joint from the apex. Radial cellule round to the apex of

the third cubital cellule, then lanceolate ; the second cubital cellule at the top slightly

longer, at the bottom shorter, than the third; the third cellule at the top not half the

length of the bottom ; the first recurrent nervure is received before, the second a little

beyond, the middle.

8. Ceropales apicipennis. (Tab. X. figg. 5, ¢ organ; 5a, wing.)

Hab. Mexico, Jalisco (Schumann).

Very similar in coloration and form to C. chiriquensis, but differing as follows :—The

clypeus is only white at the sides; the mark on the scutellum is larger; there is a

white mark on the metanotum ; the white band on the third segment is continuous;

and there is no cloud at the basal nervure, while the apex of the wing is clouded from

near the base of the radial cellule. Easily known otherwise by the scutellum being

flatter and hardly narrowed towards the apex; the long spur of the hind tibize only

reaching a little beyond the middle of the metatarsus; the tarsi not so closely or thickly

haired; the radial cellule deeper and rounded from the third cubital cellule (the

nervure in C. chiriquensis being straight, while here it is curved); the first recurrent

nervure received beyond the middle; the pleure more densely covered with a silvery

pubescence; and also by the somewhat larger size (nearly 11 millim.).

\/PSEUDAGENIA.

Pseudagenia, Kohl, Verh. zool.-bot. Ges. Wien, xxxiv., Abhandl. p. 42 (1884).

Agenia, Dahlbom, Hymen. Europ. i. p. 454 (nec Schiédte).

Pompilus, Smith, Cat. Hymen. ii. p. 118 (part.).

“ 1. Pseudagenia cressoni. (Tab. X. fig. 6, thorax.)

Nigra, fulvo-aureo hirta, basi antennarum, pedibus tegulisque rufo-fulvis, coxis, trochanteribus apiceque

tarsorum nigris ; alis fere hyalinis, stigmate nigro. 2.

Long. 8-12 millim.

BIOL. CENTR.-AMER., Hymenopt., Vol. II., November 1891. YY

162 ‘ HYMENOPTERA.

Hab. Mexico, Dos Arroyos and Xucumanatlan in Guerrero, Atoyac in Vera Cruz

(H. H. Smith); Guaremaua, San Geronimo (Champion).

Black ; the head and thorax with a decided greenish hue, and densely covered with

_aclose golden pile; the four or five basal joints of the antenne and the legs (except

the coxe and trochanters) reddish-testaceous, the tips of the tarsi blackish; wings

hyaline, somewhat suffused with fuscous. Head wider than the thorax, slightly

convex in front and behind; the clypeus broadly rounded at the apex; the ocelli

almost forming a triangle, the hinder ones separated from the eyes by a greater

distance than they are from each other; the eyes curved. Antenne rather long; the

third joint about one quarter longer than the fourth. Pronotum subarcuate behind,

the sides subconvex, slightly narrowing from the apex to the base. Scutellum finely

punctured. Median segment with a gradually rounded slope, obscurely transversely

striated. Abdomen shining, subpetiolate; pruinose, especially on the apical segments,

these latter having a brownish bloom; pygidium shining, impunctate. Legs moderately

elongate; the coxe bearing a dense greenish or golden pubescence; the long spur of

the hind tibiz not reaching to the middle of the metatarsus. Wings: the second and

third cubital cellules subequal at the top, the third somewhat longer at the bottom ;

the first recurrent nervure received a little beyond the middle, the second nervure

received slightly beyond the basal third ; radial cellule angled where the transverse

cubital nervures are received, the apex acute.

P. subvirescens has the general coloration of P. cressoni, including “the beautiful

green reflection” of the thorax ; but the first-mentioned species has the anterior margin

of the clypeus sinuous, the antenne testaceous (dusky at the tip), the median segment

oblique, and the base of the femora black. /P. auripilis also agrees in some respects

with P. cressoni, but it has the head and thorax black and the abdomen covered with

pale golden-sericeous pubescence.

2. Pseudagenia curvinervis. (Tab. X. fig. 7, thorax.)

Long. 12 millim.

Hab. Panama, Bugaba (Champion).

Very nearly related to P. cressoni, and almost identical in coloration, but differing

from it as follows:—The legs are entirely fulvo-testaceous, except the apices of the

tarsi; the golden pubescence on the clypeus and cheeks is much denser, brighter, and

more clearly separated from the rest of the head; the mandibles are rufo-fulvous (not

black); the pronotum is bright golden, and behind, instead of forming a shallow

uniform curve, it is angled in the middle; the wings are yellower in hue; the first

transverse cubital nervure is not oblique and straight, but bent from the base to the

apex—bow-shaped; the first recurrent nervure is received in the middle of the cellule.

~PSEUDAGENTIA. : 163

Above, the greenish hue is not so well marked as it is laterally; the stigma is black.

The eyes, ocelli, and pygidium are formed as in P. cressont.

Y e . e eve

3. Pseudagenia auripilis.

Pompilus auripilis, Cresson, Proc. Bost. Soc. Nat. Hist. xii. p. 373°.

Hab. Mexico, Orizaba (Sumichrast +).

4, Pseudagenia subvirescens.

Pompilus (Agenia) subvirescens, Cresson, Trans. Am. Ent. Soc. i. p. 181".

Pompilus subvirescens, Cresson, Proc. Bost. Soc. Nat. Hist. xii. p. 373”.

Hab. Mexico, Vera Cruz (Sartorius 12), Orizaba (Sumichrast } 2).

vs, Pseudagenia mexicana.

Pompilus (Agenia) mexicanus, Cresson, Trans. Am. Ent. Soc. i. p. 180°.

Pompilus mexicanus, Cresson, Proc. Bost. Soc. Nat. Hist. xii. p. 3872’.

Pompilus mexicanus, var. floridus, Cresson, Proc. Bost. Soc. Nat. Hist. xii. p. 373°.

Hab. Mexico, Presidio de Mazatlan (Forrer), Amula, Chilpancingo, Dos Arroyos,

Omilteme, all in Guerrero, Atoyac in Vera Cruz, Teapa in Tabasco (H. H. Smith),

Orizaba (Swmichrast 2*), Vera Cruz (Sartorius! ?), Temax in North Yucatan (Gaumer).

wv °

6. Pseudagenia montezuma.

Agenia Montezumia (sic), Smith, Journ. Ent. i. p. 397"; Cresson, Trans. Am. Ent. Soc. i. p. 182 *,

Hab. Mexico, Oaxaca ! ?.

V7. Pseudagenia chloris.

Pompilus chloris, Cresson, Proc. Bost. Soc. Nat. Hist. xu. p. 373°.

Hab. Mexico, Orizaba (Sumichrast 1).

VY 8. Pseudagenia incognita. (Tab. X. fig. 8, 2.)

Nigra, pedibus fulvis; alis fuscis. 92.

Long. 8 millim.

Hab. Mexico, Teapa in Tabasco (H. H. Smith).

Head finely punctured, wider than the thorax; the front with a shallow furrow;

eyes curved at the top, converging beneath; the ocelli in a triangle, the hinder ones

separated from the eyes by a greater distance than they are from each other; the

clypeus broadly rounded, densely covered with silvery hair; occiput transverse; the”

palpi fulvous. Antenne moderately stout, pilose. Pronotum shorter than the head,

the sides not narrowed anteriorly. Mesothorax finely punctured, shining. The median

| yy 2

164 ; HYMENOPTERA.

segment opaque, alutaceous, obscurely transversely striated; a broad shallow furrow

down the middle; it has a gradually rounded slope to the apex. Legs of moderate

length; the fore coxe black ; the long spur of the hind tibia reaching a little beyond

the middle of the metatarsus; the tarsi slightly spined, the apical joint blackish.

P. incognita may be known from P. mexicana by the trochanters not being black,

by the wings not being hyaline, and by the body being deep black, without any purple

reflections.

Log Pseudagenia calcarata.

Pompilus (Agenia) calcaratus, Cresson, Trans. Am. Ent. Soc. i. p. 128°.

Pompilus calcaratus, var. accolens, Cresson, Proc. Bost. Soc. Nat. Hist. xii. p. 374”.

Hab. United States, Connecticut to Illinois !.—Mexico, Orizaba (Sumichrast ?).

10. Pseudagenia montivaga. (Tab. X. fig. 9, wing.)

Cerulea, geniculis late, tibiis tarsisque flavis; alis fere hyalinis.

Long. 12 millim.

Hab. Mexico, Sierra de las Aguas Escondidas in Guerrero 7000 feet (H. H. Smith).

Eyes with a distinct curve, converging a little at the bottom. The hinder ocelli

separated from the eyes by a distinctly greater distance than they are from each other.

Clypeus broadly convex, the apex rounded. Occiput transverse. The eyes reaching

to the extreme back of the head. The head opaque, very closely and finely rugose, the

cheeks and clypeus densely covered with silvery pubescence; the vertex and outer

orbits more sparsely pubescent, and with long pale-fuscous hairs. Pronotum very

short, broadly arcuate in front, concave behind, the middle with a rather sharp angle.

Median segment at the base closely punctured, the rest irregularly transversely striolate.

Pro- and mesothorax finely and closely punctured, and covered with a whitish pubes-

cence; the median segment also with a whitish pile, and with rather long pale fuscous

hairs. Abdomen shining, almost impunctate, irregularly pruinose; the apical segment

shining, impunctate, and with long fuscous hairs; petiole at the base narrowed into a

neck, from which it becomes gradually dilated to the apex. Antenne rather long,

moderately stout, not tapering much to the apex, pruinose. Wings: second and third

cubital cellules subequal at the top, the third at the bottom a little longer than the

second ; the first transverse cubital nervure obliquely curved, the second also curved,

but not so obliquely, the third roundly elbowed near the bottom; the first recurrent

nervure received in the middle, the second in the basal third of the cellule. The coxe

and trochanters bluish; the femora, except at the apex, and the apical joint of the

tarsi, black; the spurs blackish, yellowish at the base, not reaching the middle of

the metatarsus.

PSEUDAGENIA, 165

/ 11. Pseudagenia gentilis. (Tab. X. fig. 10, head.)

Nigra, dense argenteo-pilosa, femoribus posterioribus rufis, geniculis nigris; alis fere hyalinis. 9.

Long. 9 millim. ’

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Eyes distinctly converging at the bottom, elbowed at the top. Hinder ocelli sepa-

rated from the eyes by a distinctly greater distance than they are from each other.

Clypeus elongate, convex, the apex somewhat sharply rounded. Head rather short,

compared to the breadth, the occiput transverse, the sides rounded, not much

developed behind the eyes; finely and closely punctured; covered with long silvery

pubescence, more sparsely so on the top. Prothorax short, the sides rounded, narrowed

towards the head. Median segment short, gradually rounded, transversely striated; a

smooth, shining, finely transversely striolated, fulvous band at its base. The thorax

finely and closely punctured; covered with long whitish hairs, which are especially

long on the base and apex. Abdomen short, shining, impunctate; the petiole with a

distinct neck at the base, from which it becomes gradually dilated to the apex; the

apical segment shining, bearing some scattered punctures, the apex testaceous, broadly

rounded. Antenne stout, moderately long, covered with a close microscopic pile; the

apical joints brownish beneath. Wings: second and third cubital cellules at the top

and bottom subequal; the first and third transverse cubital cellules obliquely curved,

the second straight; the first recurrent nervure received slightly before the middle,

the second close to the basal fourth. Legs pruinose; the long spur of the hinder tibie

not quite reaching the middle of the metatarsus.

/ 12. Pseudagenia isthmica. (Tab. X. fig. 11,2.)

Nigra, nitida, mandibulis, antennis pedibusque anticis rufis; alis hyalinis, fusco-bifasciatis. @.

Long. 7 millim.

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Eyes a little converging above and beneath. Ocelli forming a triangle, the hinder

ones separated from the eyes by nearly the same distance they are from each other.

Clypeus broadly convex, broadly rounded at the middle. Occiput slightly concave.

Head not much developed behind the eyes; closely punctured, densely covered with

a whitish pile, and with a few longish hairs on the top; its black colour has coppery

tints. Antenne short, stout; the third joint fully one quarter longer than the fourth;

the first joint not much shorter than the fourth. Prothorax as long as the head,

the sides broadly rounded, sparsely punctured, densely covered with a fulvous pubes-

cence; mesothorax shining, aciculate, the sides finely punctured. Median segment

very finely punctured, broadly rounded, the apex with two large spots of dull fulvous

pubescence; the transverse furrow in the mesopleure placed below the middle.

Abdomen shining, subpetiolate, shorter than the thorax, sparsely pruinose, the apical

166 HYMENOPTERA.

segments bearing long black hairs; pygidium broad, shining, without pubescence.

Wings: the first cloud is at the basal nervure, the second is twice the width of the

first, commences a little behind it, and ends a little before the apex of the radial

cellule; the second cubital cellule is subquadrate, at the top about one-fourth longer

than the third at the top, at the bottom not so much longer; the first transverse

cubital nervure is straight, the second curved; the third cubital cellule is not half so

long at the top as at the bottom; the second cubital cellule receives the recurrent

nervure a little beyond the middle, the cubital nervure being angled where it joins it;

the second recurrent nervure is broadly curved. The legs are short and stout; the

coxe, tibie, and tarsi are densely fulvous-pubescent; the femora are sparsely haired ;

the long spur of the hinder tibiz does not reach the middle of the metatarsus.

P. nubifer, Cress., agrees closely with this species in coloration; but it has the head

and thorax clothed with golden pile, the sides of the pronotum rufous, and the edge of

the clypeus truncated.

13. Pseudagenia championi. (Tab. X. fig. 12, 2.)

Nigra, capite thoraceque dense aureo-pilosis, abdomine pedibusque fere ceruleis; alis flavo-hyalinis, fusco-

bifasciatis. 9.

Long. 12 millim.

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

Black, the head and thorax with a bluish tinge; the head above hidden by golden

pubescence; the pro- and mesonotum with golden, the pleure and the apex of the

median segment with silvery, pubescence; the abdomen from the second segment

thickly pruinose. Face and clypeus finely punctured; eyes slightly converging

beneath ; ocelli small, forming a triangle, the hinder ones separated from the eyes

by a slightly greater distance than they are from each other; clypeus broadly rounded

at the apex; occiput transverse behind, the sides rounded; the mandibles bearing a

few long white hairs. Pronotum arcuate, forming a neck at the base. The scutellum

broad, hardly narrowed behind. Median segment with a gradual rounded slope,

granular. Abdomen petiolated; the pygidium granular, densely covered with silvery

pubescence and with long silvery hair, at the apex with golden-fulvous hairs. Wings:

radial cellule lanceolate; the second cubital cellule at the top four times longer, at the

bottom shorter, than the third; the third cellule at the top much narrowed, about

half the length of the space bounded by the second recurrent and the second transverse

cubital nervures ; the first transverse cubital nervure elbowed ; the first recurrent nervure

received before, the second in front of, the middle. Legs long, slender, covered with

a silvery pubescence, which is especially thick on the coxe; the tibize and tarsi with a

few short spines; the long spur of the hind tibiae does not reach the middle of the

metatarsus; the femora have a bluish tinge. The small first band on the wings

PSEUDAGENIA. 167

extends along the basal nervure ; the second band from the base of the stigma to the

end of the third cubital cellule, beyond which the wing is pale fulvous-hyaline.

Vv .

14. Pseudagenia tolteca. (Tab. X. figg. 14; 14a, wing.)

Ceerulea; alis hyalinis, apice fuscis. 9.

Long. 6-7 millim.

Hab. Muxico, Omilteme in Guerrero 8000 feet, Cuernavaca in Morelos (H. H. Smith).

Head wider than the thorax, finely punctured, the face with a whitish pubescence ;

eyes distinctly converging beneath ; the ocelli in a triangle, the hinder ones separated

from the eyes by a greater distance than they are from each other; the occiput slightly

convex, the sides rounded; the clypeus smooth and shining, broadly rounded at the

apex. Antenne thin, rather long. Prothorax shorter than the head, the sides rounded.

narrowed towards the base, the apex arcuate. The thorax finely punctured, not

narrowed towards the apex; the median segment opaque, alutaceous, the sides densely

covered with white pubescence, almost black, as are also the pleure, these being also

opaque. Abdomen of a much brighter blue colour than the thorax, shining, pruinose

towards the apex; pedunculated, the base narrow, the apex sharply pointed; the

-pygidium bearing long black hair, finely punctured, dull fulvous towards the apex.

Legs long and slender; the long spur of the hind tibiz does not reach the middle of

the metatarsus. |

15, Pseudagenia nubifer.

Pompilus nubifer, Cresson, Proc. Bost. Soc. Nat. Hist. xii. p. 374'.

Hab. Mexico, Orizaba (Sumichrast 3).

’ 16. Pseudagenia czrulipes.

Agenia cerulipes, Smith, Journ. Ent. i. p. 397°.

Hab. Mexico, Orizaba !.

“17. Pseudagenia azurea.

Pompilus (Agenia) azureus, Cresson, Trans. Am. Ent. Soc. i. p. i831’.

Hab. Mexico, Vera Cruz (Sartorius +).

/ 18. Pseudagenia collina. (Tab. X. fig. 13, 2.)

Azurea, antennis pedibusque nigris ; alis hyalinis, fusco-bifasciatis. 2.

Long. 10. millim.

Hab. Guatemaa, El Tumbador 2500 feet (Champion).

Eyes slightly converging beneath. Ocelli in a triangle, the hinder ones separated

from the eyes by a somewhat greater distance than they are from each other. Clypeus

168 HYMENOPTERA.

not very convex, the apex almost transverse. Head narrow, closely punctured, the face

with a close white pubescence, the other part with the pubescence shorter and sparser ;

occiput transverse, rounded at the sides. Prothorax not quite so long as the head, the

sides rounded, almost transverse behind. Median segment a little shorter than the

mesothorax, having a gradual rounded slope; the oblique furrow in the mesopleure

distinct, narrow. The pro- and mesothorax are finely and very closely punctured; the

median segment is granular, covered with a white pubescence, and has two rounded

spots of pubescence at the apex. Antenne rather long, filiform, pruinose. Abdomen

shining, petiolate, pruinose towards the apex; the pygidium finely punctured, and

bearing on the apical three-fourths a dull fulvous depressed pile. The fore wings

have a narrow fascia along the basal nervure; the apex is clouded from the base of

the radial cellule; the second cubital cellule at the top is nearly one-fourth longer

than the third, at the bottom it is shorter; the first transverse cubital nervure is

elbowed, the second straight and oblique, the third curved; the radial cellule in the

middle is as wide as the length of the second cubital cellule at the top. Legs elongate,

pruinose, the femora with a bluish tinge; the long spur of the hinder tibie reaches

the middle of the metatarsus.

~ 19. Pseudagenia levipes.

Pompilus levipes, Cresson, Proc. Bost. Soc. Nat. Hist. xii. p. 874°.

Hab, Mexico, Orizaba (Sumichrast ').

— 20. Pseudagenia perdita. (Tab. X. fig. 16, wing.)

Nigra, longe pilosa; alis fuscis. 9.

Long. 9 millim.

Hab. Mexico, Omilteme in Guerrero 8000 feet (7. H. Smith).

Kyes distinctly converging beneath. Ocelli in a triangle, the hinder ones separated

from each other by half the distance they are from the eyes. Clypeus convex,

depressed at the base, broadly rounded at the apex. Occiput transverse. Head stout,

broad, finely punctured, not much developed behind the eyes. Antenne moderately

stout, obscurely pruinose. The cheeks and clypeus densely, the rest of the head more

sparsely, covered with a silvery pubescence and with long blackish hair. Thorax

alutaceous; the median segment granular, furrowed down the middle. Prothorax

short, roundly narrowed towards the head; median segment gradually rounded at the

apex; mesopleural furrow distinct. The thorax is covered with long pale fulvous

hair, which is especially long on the sternum. Abdomen shorter than the thorax,

shining, subpetiolate, pruinose, the apical segments bearing long fuscous hair; the

pygidium shining, impunctate, without pubescence. Wings: radial cellule wide,

angled where the nervures are received; the second cubital cellule at the top and

PSEUDAGENIA. 169

bottom shorter than the third; the first transverse cubital nervure obliquely curved,

the second straight, the third sharply oblique, elbowed at the bottom; the first

recurrent nervure is received just beyond the middle, the second beyond the basal

third. Legs long, pruinose, the tarsi with a fulvous pile; the long spur of the hind

tibize does not reach the middle of the metatarsus.

21. Pseudagenia extrema. (Tab. X. fig. 15, wing.)

Long. 6 millim. ¢.

Hab. Mexico, Sierra de las Aguas Escondidas in Guerrero 9500 feet (H. H. Smith).

Similar to P. perdita, but easily separated by the second and third cubital cellules at

the top being subequal, the top of each, too, not being very much narrower than the

bottom, the cellules being thus wider than long; the first recurrent nervure is received

near the apex of the cellule; the third transverse cubital nervure is curved and not

elbowed at the bottom; the ocelli are more widely apart, and are separated from the

eyes by only a little greater distance than they are from each other; and the wings

from the base of the radial cellule are much darker than the basal region. Eyes

almost parallel. Clypeus broadly rounded. Occiput slightly concave. Antenne

stout, covered with a microscopic pile; the joints not clearly separated. Prothorax

large, subquadrate, the sides bluntly rounded, not much narrowed in front. Thorax

alutaceous; the median segment minutely rugose, shining, not furrowed down the

middle, and with a gradual rounded slope. Mesopleural furrow placed above the

middle. The head and thorax bear long fuscous hairs.

P. levipes is a near ally of this species, but may be known from it by the second

transverse cubital cellule being subconical, pointing towards the base of the wings, the

third nearly quadrate and receiving the recurrent nervure in the middle, &c.

/ .

V 22. Pseudagenia teapz. (Tab. X. fig. 17, wing.)

Nigra, tibiis tarsisque anticis pallide fuscis; alis hyalinis, apice fere fumatis. ¢.

Long. 6 millim.

Hab. Mexico, Teapa in Tabasco (H. H. Smith).

‘Head finely and closely punctured; the face and cheeks from a little above the

antenne covered with a dense white pubescence; eyes curved above, converging a little

beneath ; ocelli in a curve, the hinder ones separated from each other by a little less

distance than they are from the eyes; clypeus with the sides oblique, straight, the

centre very slightly roundly-concave at the apex; the occiput slightly concave in the

centre ;.a narrow channel runs down from the ocelli. Prothorax deeply arcuate in

front; obliquely narrowed from the tegule. The thorax above alutaceous, the

scutellum and pleure finely punctured; the scutellum narrowed towards the apex;

the median segment sharply oblique. to the apex, which again has an oblique slope.

BIOL. CENTR.-AMER., Hymenopt., Vol. II., November 1891. VHA

170 HYMENOPTERA. |

Abdomen shorter than the thorax, subpetiolate. Legs moderately stout, pilose; the

spurs stout, the long spur on the hinder tibie reaching a little beyond the middle of the

metatarsus. Antenne moderately stout, the middle joints slightly dilated. Wings:

the second cubital cellule at the top and bottom a little longer than the third; the first

and third transverse cubital nervures curved, the second almost straight; the first

recurrent nervure received close to the centre, the second in the apical fourth of the

cellule ; the lanceolate cellule wide, the apex lanceolate.

~ 23. Pseudagenia utilis.

Long. 6 millim.

Hab. Muxtco, Teapa in Tabasco (H. . Sinith).

Similar in coloration to P. teape, but smaller; the fore tibiz and tarsi black; the

median segment much more rounded, the basal half not having such a sharply oblique

slope; the second cubital cellule at the top and bottom distinctly shorter than the

third; the recurrent nervures both received before the middle of the cellule; the basal

nervure not interstitial; the long spur of the hind tibie not reaching the middle of the

metatarsus. Eyes scarcely arcuate at the top, converging beneath; ocelli almost

forming a triangle, the posterior ones separated from the eyes by a distinctly greater

distance than they are from each other. Clypeus convex, transverse at the apex,

the sides rounded. ‘The head has a slight bluish tinge; it is finely and closely

punctured, and has a sparse white pubescence on the face; the occiput is slightly

convex. Pronotum arcuated behind, gradually narrowed from the apex. Thorax

above alutaceous; the pleuree and scutellum finely punctured; the scutellum broad,

flat; the median segment elongated, with a gradual slope. Abdomen short, petiolate ;

the pygidium covered with long fuscous hairs. Legs pruinose, elongate, slender; the

long spur of the hind tibis not reaching the middle of the metatarsus; the tarsi

thickly covered with stiff pubescence. ‘The second and third transverse cubital cellules

are broadly curved; the second cubital cellule is much narrowed at the top.

J 24. Pseudagenia relativa.

Nigra, ore, palpis, scapo antennarum subtus, linea pronoti, coxis, trochanteribusque anticis flavis, pedibus

dimidio basali abdominisque rufis ; alis hyalinis. ¢.

Long, 7 millim.

Hab. Mexico, Teapa in-Tabasco (H. H. Smith).

Eyes slightly converging beneath. Hinder ocelli separated from the eyes by a some-

what greater distance than they are from each other. Clypeus slightly convex, the

apex broadly rounded; the labrum projecting, its apex rounded. Occiput transversely

rounded. Head densely covered with a rather long whitish pubescence; the front

aciculate; a furrow runs down from the ocelli. Thorax aciculate, covered with a

PSEUDAGENIA. l7t

whitish pubescence; the pronotum a little shorter than the head, the sides rounded

and narrowed in front. Median segment elongate, with a gradual slope to the apex,

the centre finely transversely striated. Petiole narrow, becoming gradually dilated

from the base to the apex, without a neck; the extreme base black. The basal three

segments of the abdomen rufo-testaceous; the other segments pubescent, narrowly

edged with yellow at the apex, the apical segments more or less testaceous. Antenne

stout, moderately elongate, and covered with a microscopic pile, the apical joints

brownish beneath. Wings: the second cubital cellule considerably shorter than the

third at the top and bottom; the first transverse cubital nervure curved, a little

oblique, the second almost straight ; the first recurrent nervure received slightly before

the middle, the second in the basal third of the cellule. Legs elongate; the long spur

of the hind tibie three-fourths the length of the metatarsus.

25. Pseudagenia orbiculata.

Agenia orbiculata, Smith, Journ. Ent. 1. p. 397°.

Hab. Mexico}.

\ 926. Pseudagenia azteca.

Nigra, abdominis basi late rufa, calcaribus albis; alis fusco-hyalinis, stigmate fusco. ¢.

Long. 5 millim.

Hab. Muxico, Teapa in Tabasco (H. H. Smith).

Head alutaceous, the lower half densely covered with white pubescence. Eyes

slightly curved, converging beneath; ocelli not in a triangle, the hinder ones separated

from each other by the same distance they are from the eyes; a narrow furrow runs

down from them. Clypeus broadly rounded from the base. Occiput almost transverse.

Prothorax arcuate behind, somewhat acute in the middle; elongate, sharply narrowed

from the middle towards the apex. Scutellum broad, finely punctured, not much

narrowed towards the apex. Median. segment with a gradual rounded slope. The

thorax alutaceous, densely covered with a short white pubescence. Abdomen as long as

the head and thorax united, the base petiolate; the first (except at the extreme base),

second, and third, and part of the fourth, segments rufous; the apical segment with a

pale pubescence. Wings: radial cellule wide, slightly angled where the transverse

cubital nervures are received, the apex acutely oblique; the second cubital cellule at

the top and bottom shorter than the third; the first transverse cubital nervure broadly

curved, the third oblique, with a slight curve; the first recurrent nervure received in

the basal third, the second beyond the middle. Legs moderately slender; the fore

knees testaceous; the long spur of the hind tibie more than three-fourths the length

of the metatarsus. Antenne stout, densely pilose; the third and fourth joints subequal.

P. macer, Cresson, appears to resemble this species considerably; but it has the

ZZ 2

Rumen

172 HYMENOPTERA.

second and third cubital cellules of equal size, the legs piceous-black (with, I presume,

black spurs), the antenne fuscous, and the tegule dull testaceous.

27. Pseudagenia melanocephala. (Tab. X. fig. 18, 2 .)

Ferruginea, fronte et vertice nigris; alis lacteis, fusco-bifasciatis. 9.

Long. 8 millim.

Hab. Mexico, Atoyac in Vera Cruz (H. H. Smith).

Head broader than the thorax, finely punctured; the top with a fine close pile; the

cheeks and clypeus with long white pubescence. Eyes coarsely faceted, curved above,

converging beneath; the ocelli in a curve, the hinder ones separated from the eyes by a

little less distance than they are from each other. Clypeus short, broadly rounded.

Occiput concave. Thorax finely punctured; the pronotum short, with a gradual slope

from the apex, which is widely arcuate. Scutellum slightly narrowed towards the apex.

Median segment more strongly punctured than the mesothorax, obscurely furrowed down

the centre, and with a gradual rounded slope to the apex; the curved metapleural furrow

moderately deep. Abdomen about as long as the head and thorax united, shining,

the petiolated part of the basal segment short; the. apical segments bearing long

fulvous or pale hairs; the ventral segments also having long pale hairs. Legs compa-

ratively stout, pilose; the tarsi with a few minute spines; the long spur of the hind

tibize does not reach the middle of the metatarsus. Wings shorter than the body; the

first cloud is somewhat oblique and extends along the basal nervure, the second reaches

from the first to the third transverse cubital nervures; the base of the stigma is fulvous ;

the second cubital cellule at the top is a little longer, at the bottom shorter, than the

third; the first recurrent nervure is received in the middle, the second not far from

the base of the cellule. The antenne are stout, involute; the third joint distinctly

longer than the fourth; the apical six joints are black. |

28. Pseudagenia tabascoensis. (Tab. X. figg. 19,3; 19a, ¢ organ.)

Ferruginea; alis fere hyalinis, fusco-bifasciatis, stigmate pallide testaceo. ¢.

Long. 64 millim.

Hab. Mexico, Teapa in Tabasco (H. H. Smith).

Head closely, finely, uniformly punctured ; the face with a sparse pale pubescence.

Eyes curved above, distinctly converging beneath; the ocelli forming a triangle, the

hinder ones separated from each other by a much less distance than they are from the

eyes. Clypeus short, broad; the apex almost transverse. Occiput roundly convex.

Antenne moderately stout; the third and fourth joints subequal ; the apical two joints

black. Pronotum arcuate behind, gradually narrowed towards the base. Scutellum

broad, not narrowed towards the apex; the median segment with a gradual slope to

the apex, somewhat elongate. The thorax coarsely aciculate; the pleure with a

PSEUDAGENIA.—SALIUS. 173

white pubescence. Abdomen with the basal segment narrowly petiolate from the base to

the apex, this segment being much thinner than the others ;- all the segments shining,

impunctate. Legs elongate, bearing a microscopic pile; the long spur of the hind

tibie reaching beyond the middle of the metatarsus. Wings: radial cellule wide,

slightly angled where the transverse cubital nervures are received; the apical abscissa

oblique, somewhat curved towards the apex ; the second cubital cellule quadrate, much

shorter than the third ; the first and second transverse cubital nervures oblique, straight ;

the first recurrent nervure is received in the middle, the cubital nervure being angled

there, the third in the basal fourth.

VGALIUS,

Salius, Fabricius, Syst. Piez. p. 124 (1804) ; Kohl, Verh. zool.-bot. Ges. Wien, xxxiv., Abhandl.

p. 43 (1884).

Priocnemis, Schiddte in Kréyer’s Nat. Tidskr. i. p. 321 (1837).

Hemipepsis, Dahlbom, Hymen. Europ. i. p. 462.

Pallosoma, Lepeletier de Saint-Fargeau, Hist. Nat. Ins., Hymen. iii. p. 492.

Mygnimia, Smith, Cat. Hymen. ii. p. 181.

i. The claws with one tooth; the hind tibiw usually serrate. (Priocnemis.)

J 1. Salius panamensis.

Niger, dense aureo-hirsutus ; abdomine fulvo, nigro-lineato, pedibus ferrugineis, coxis trochanteribusque nigris ;

alis fere hyalinis, nervis fuscis. 9.

Long. 18 millim.

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Clypeus convex, broader than long, the sides obliquely truncated, the centre almost

transverse and with a distinct margin. Eyes reaching to near the base of the mandibles;

curved towards the top, where they approach nearer to each other than they do at the

bottom. Hinder ocelli separated by about half the distance they are from the eyes,

Antenne long, tapering towards the apex, filiform, involute; the third joint nearly

twice the length of the first and distinctly longer than the fourth. Pronotum with the

sides convexly rounded; the hinder border slightly and broadly curved; the base with

a rounded slope towards the head; in length nearly as long as the head. Median

segment with a rounded slope, the surface granular, a shallow furrow down the centre.

Abdomen shining, hardly aciculate at the base, distinctly so towards the apex; apical

segment densely covered with bright ferruginous, depressed, bristly hair; the second to

the fifth segments with a short golden pile at the apex. Wings: second cubital cellule

at the bottom a little shorter than the third at the top, but considerably shorter than the

third at the bottom, the nervures roundly curved; the first recurrent nervure is received

in the apical fourth of the cellule, the second before the middle. The tibiee serrate, the

spines moderate; the long spur not reaching the middle of the metatarsus. Head

1 74 . HYMENOPTERA.

and thorax black, alutaceous; the clypeus, except a broad band in the middle and

a broad irregular line along the inner orbits reaching to near the ocelli, and the

mandibles, except at the apex, pale yellow, densely covered with a golden pile, and

with long pale hairs. Thorax densely covered with a golden pile and more or less

with long pale fulvous hair. Abdomen at the base pruinose, at the apex covered

densely with a short golden pile; the anterior portion of the three or four basal

segments more or less black. Wings varying from almost hyaline to having a fulvo-

fuscous tint. Tegule rufous.

The pubescence in this species is denser and of a distinctly brighter golden hue than

in &. cincticornis; the antenne are entirely black; the clypeus is broadly yellow

laterally (while in S. cincticornis it bears only a small mark); there is no yellow

behind the orbits.

! 2. Salius sartorianus.

Pompilus (Priocnemis) sartorianus, Cresson, Trans. Am. Ent. Soc. i. p. 120’.

Hab. Mexico, Venta de Zopilote in Guerrero (H. H. Smith), Vera Cruz (Sartorius ').

V 3. Salius cincticornis.

Powpilus (Priocnemis) cincticornis, Cresson, Trang, Am. Ent. Soc. i. p. 120 *; Proc. Bost. Soc. Nat.

Hist. xii. p. 3727. “

Hab. Mxxtico, Vera Cruz (Sartorius 1 ?), Orizaba (Sumichrast 7); Guatemana, Purula

in Vera Paz (Champion).

_j 4. Salius neotropicalis. (Tab. X. figg. 20,2; 20a, head.)

Niger, medio antennarum, orbitis oculorum, margine pronoti, maculis 5 mesonoti, maculis abdominisque flavis ;

pedibus rufo-fulvis, coxis femoribusque subtus flavis, femoribus supra nigro-lineatis ; alis hyalinis, nervis

nigris. @.

Long. 17 millim.

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

Clypeus moderately convex, the apex roundly projecting in the centre, the edges

forming a rather thick triangular tooth; the sides obliquely truncated. Eyes touching

the base of the mandibles, almost parallel, the space between at the top not much

narrower than at the bottom. Hinder ocelli separated from the eyes by more than

twice the distance they are from each other. Antenne filiform, microscopically pilose.

Pronotum rounded in front, broadly and roundly concave behind. Median segment

short, rounded, the central furrow distinct. Black, the head and thorax opaque,

alutaceous; the sixth antennal joint entirely, the fourth broadly at the apex, and the

fifth at the base, yellow; the inner orbits broadly, the outer orbits more narrowly at

the top and bottom, the clypeus broadly at the sides, the mandibles (except at the

apex), the edges of the prothorax all round (except in the middle in front), the tegule,

a mark in the centre of the mesonotum, the middle of the scutellum, a mark on the

SALIUS, _ | 175

metanotum, two marks on the mesopleure behind (the lower one the larger), a mark

on the lower and anterior end of the metapleure, and a large mark on the side of the

abdominal segments, yellow. The ventral surface for the greater part obscure yellow;

the apical segment densely covered with depressed, stiff, ferruginous pubescence.

Wings clearly hyaline, the nervures black; the second cubital cellule above a little

longer than thé space bounded by the second transverse cubital and second recurrent

nervures, at the bottom a little longer than the top of the third cellule; the first

recurrent nervure received in the apical third of the cellule, the second a little beyond

the basal third. The head bears a short, sparse, silvery pubescence and long, soft,

silvery hair; the pubescence on the thorax is very sparse; the pleure and median

segment are clothed with longish pale hairs. Tibie doubly serrate; the long spur of

the hind pair does not reach the middle of the metatarsus.

iva . ;

5. Salius velox. (Tab. X. fig. 21,2.)

? Priocnemis velox, Smith, Journ. Ent. i. p. 3987.

Ferrugineus, capite nigro, ore rufo; alis flavo-hyalinis, fusco-trifasciatis. 9.

Long. 11-12 millim.

Hab. Mexico, Xucumanatlan 7000 feet, Omilteme 8000 feet,.both in Guerrero

(H. H. Smith), Oaxaca 1.

Eyes parallel, if anything converging at the bottom. Ocelli forming almost a

triangle, the hinder ones separated from the eyes by nearly twice the distance they

are from each other. Occiput slightly convex behind, the sides broadly rounded.

Clypeus short, broad, rounded at the apex, the middle being slightly arcuate. Head

sparsely covered with longish pale hairs; apparently alutaceous. Thorax granular,

sparsely covered with short white hairs. Pronotum shorter than the head, broadly

rounded in front; behind with the curve rather sharp in the centre. There is a broad

oblique furrow at the end of the mesopleure, and a shorter, narrower, somewhat

oblique one runs to the middle from the pronotum. Median segment not much

shorter than the mesothorax, broadly rounded; the central furrow shallow. Abdomen

as long as the thorax, shining, almost impunctate; the petiole black at the base,

narrow, becoming gradually wider towards the apex. The apical segments bear

longish fuscous hairs; pygidial area shining, convex, densely covered with golden hair.

Antenne stout, pruinose ; the apical eight joints black. Wings: second cubital cellule

at the top twice the length of the third at the top, at the bottom a little shorter than

the third ; first recurrent nervure received in the apical third of the cellule, the second

beyond the basal third. Legs pruinose; the tibie serrate, the long spur not reaching

the middle of the metatarsus; the coxee and trochanters at the base above, and the

greater part of the femora, black. Pleuree and apex of the median segment black. The

apex of the clypeus, mandibles, and palpi dull ferruginous.

176 HYMENOPTERA.

It is doubtful if the specimens described are really referable to S. velox (Smith), which

has only “a fuscous fascia and the tips fuscous ;” but in other respects they agree

closely with it. The species is probably a variable one, as the specimen from Omilteme

wants the black on the pleure, apex of median segment, and legs, and only the five

apical joints of the antenne are black.

y 6. Salius omiltemius. (Tab. X. fig. 22, wing.)

Niger, basi antennarum, tibiis tarsisque rufo-testaceis, capite aureo-piloso ; alis flavis, fusco-trifasciatis. 9.

Long. fere 12 millim. ‘

Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith).

Head, except on the clypeus, densely covered with a golden pubescence; eyes

almost parallel; the ocelli in a triangle, the hinder ones separated from the eyes by

nearly twice the distance they are from each other; clypeus punctured, the apex

broadly rounded ; the mandibles broadly red in the middle, the extreme apex black;

the occiput transverse. Antenne stout; the basal two joints reddish, the third joint

distinctly longer than the fourth. Pronotum shorter than the head, the sides rounded,

narrowing towards the base; the apex arcuated; the apex and base, and the pleure,

with golden pubescence, that on the pleuree long. Mesonotum aciculate; the scutel-

lum broad, finely punctured, flattish, hardly narrowed towards the apex; the basal

half of the median segment with an oblique rounded slope, the apical half straight,

oblique; the surface transversely aciculate, covered with a short fulvous pile. The.

mesopleure impunctate, shining, the oblique furrow complete; the metapleure

strongly aciculate. Abdomen longer than the head and thorax united; a broad

brownish-red transverse mark on the second segment; the pygidium apparently

coarsely rugose, thickly covered with long dull rufous hairs; the apical ventral

segments brownish-rufous at the apex and covered with long fuscous hairs. Tibiz

thickly and stoutly serrate, the long spur of the hind pair reaching a little beyond

the middle of the metatarsus; the apices of the tarsal joints black; the claws with

one straight spine before the curved apex. Wings: the first cloud is along the basal

nervure ; the second (and broader) cloud is along the second cubital cellule, and extends

the entire breadth of the wing; the apical (and narrowest) cloud commences at the end

of the stigma : the second cubital cellule at the top is longer, at the bottom shorter,

than the third; at the bottom the second cellule is shorter than at the top, owing to

the second transverse cubital nervure being elbowed obliquely at the bottom, and it is

angled before the middle, where the recurrent nervure is received; the first transverse

cubital nervure is obliquely curved, the third straight at the bottom, obliquely rounded

at the top; the second recurrent nervure is roundly elbowed above the middle.

SALIUS. 177

‘a Salius trifasciatus. (Tab. X. figg. 23, ¢; 23a, male organ.)

Niger, geniculis, tibiis tarsisque rufis ; alis flavo-hyalinis, fusco-trifasciatis. ¢.

Long. 6-7 millim.

Hab. Mexico, Sierra de las Aguas Escondidas in Guerrero 9500 feet (H. H. Smith).

Head almost opaque, very finely punctured; sparsely covered with rather long

blackish hairs, the clypeus thickly clothed with dull whitish pubescence ; eyes straight,

diverging beneath; the ocelli in a triangle, the hinder ones separated from the eyes

by a much greater distance than they are from each other; clypeus with the sides

broadly rounded, the apex in middle almost transverse ; the occiput concave. Antenne

nearly as long as the body, pubescent ; the third joint longer than the fourth. Pro-

notum subquadrate, very slightly narrowed from the apex to the base, the apex:

projecting bluntly in the middle. Median segment rather long, having a gradual slope

to the apex; very finely and closely punctured. Abdomen as long as the thorax,

subsessile; the apex bluntly rounded, pilose. Legs rather long, indistinctly spined ; the

long spur of the hind tibie reaching somewhat beyond the middle of the metatarsus ;

the tarsi very long, the joints black at the apex; the claws simple. Wings rather

long ; the radius curved from the base to the apex ; the second cubital cellule at the

top longer, at the bottom shorter, than the third; the first transverse cubital nervure

curved, the second sharply elbowed near the bottom, the third bluntly so above the

middle; the first recurrent nervure received almost in the centre of the cellule, the

second before the middle.

V 8. Salius rupex.

Pompilus rupex, Cresson, Proc. Bost. Soc. Nat. Hist. xii. p. 872".

Hab. Mexico, Orizaba (Sumichrast !).

/ 9. Salius rufospina. (Tab. X. fig. 24, wing.)

Niger, argenteo-pruinosus, femoribus tibiisque rufis; alis hyalinis, apice fumatis. 9.

Long. 11 millim.

Hab. Mexico, Teapa in Tabasco (ZH. H. Smith).

Head a little wider than the thorax; the front and vertex opaque, alutaceous ; from

a little above the antenne densely covered with a silvery pile; eyes slightly curved

and converging above, at the bottom straight, parallel; the ocelli not quite forming a

triangle, the hinder ones separated from each other by a somewhat less distance than

they are from the eyes; clypeus short, bluntly rounded to the apex. Pronotum

subquadrate, bluntly arcuate behind, almost transverse; the scutellum broad, not

narrowed behind, convex ; the median segment short, gradually rounded at the apex,

opaque, alutaceous. Abdomen a little longer than the head and thorax united,

subpetiolate, the sides silvery-pruinose; the pygidium apparently rugose, densely

BIOL. CENTR.-AMER., Hymenopt., Vol. II., August 1893. 2 AA

178 HYMENOPTERA.

covered with a long, dull, fulvous pubescence. Legs pruinose ; the tibie serrate, the

long spur of the hind pair not reaching to the middle of the metatarsus; the tarsal

spines rufous; the spine on the hind claw short and thick. Wings: radial cellule

narrow, elongate, lanceolate; the second cubital cellule very short, narrowed at the

top, at the top and bottom less than half the length of the third ; the first recurrent

nervure received a little behind, the second in front of, the middle of the cellule.

The antenne densely pruinose ; the third joint much longer than the fourth.

J 10. Salius juno.

Niger, antennarum articulis 1°-3™ pedibusque rufis, coxis trochanteribus apicibusque tarsorum nigris ; alis

hyalinis, 9°.

Long. 9 millim.

Hab. Mxxico, Chilpancingo in Guerrero 4600 feet (H. H. Smith).

Head not much broader than the thorax, closely punctured, the face and clypeus

densely covered with a white pubescence ; the eyes distinctly curved at the top and

converging at the bottom ; the ocelli in a curve, the hinder ones separated from the

eyes by a slightly greater distance than they are from each other; clypeus margined,

broadly rounded ; occiput slightly convex. Pronotum shorter than the head; the

sides oblique; the apex shallowly arcuate, not rounded, but somewhat angled in the

middle. Thorax opaque, alutaceous; the median segment also opaque, the apex

obscurely transversely striated, short, with rather an abruptly rounded slope. Abdomen

with the petiole somewhat shorter than the head and thorax united; the sides pruinose

in the middle; the apical segment densely covered with a pale fulvous pubescence and

with long white hair. Tibie serrate, the spur of the hind pair short, not reaching to

the middle of the metatarsus; the tarsi sparsely spined. Antenne short, stout; the

apical joints brownish. Wings comparatively short; the radial cellule angled where

the transverse cubital nervures are received ; the second cubital cellule at the top and

bottom shorter than the third, the top considerably shorter than the bottom; all the

transverse cubital nervures are curved ; the first recurrent nervure is received a very

little beyond the middle, the second almost in the middle.

J 11. Salius angustithorax.

Priocnemis angustithorax, Tasch. Zeitschr. f. ges. Naturw. xxxiv. p. 39.

Hab. Mexico }.

J 12. Salius flammipennis.

Pompilus flammipennis, Smith, Cat. Hymen. iii. p. 155*; Cresson, Proc. Bost. Soc. Nat. Hist. xii.

p. 3717.

Pompilus (Priocnemis) flammipennis, Cresson, Trans. Am. Ent. Soc. i. p. 119°.

Pompilus ignipennis, Cresson, Proc. Ent. Soc. Phil. iv. p. 121+.

SALIUS. 179

Hab. Mexico (Sallé), Northern Sonora (Morrison), Ciudad in Durango 8100 feet

(forrer), Amula 6000 feet, Xucumanatlan 7000 feet, Tierra Colorada, 2000 feet, and

Acapulco, all in Guerrero (H. H. Smith), Orizaba (Sumichrast 2). GUATEMALA, El

Tumbador, San Gerénimo (Champion); Panama, Volcan de Chiriqui 2000 to 3000 feet

(Champion).—West Inp1xs, Cuba 3, San Domingo !3.

S. flammipennis varies greatly in size—from 4-12 lines; it is a common species in

Central America.

V'13, Salius smithi. (Tab. X. fig. 25, head.)

Niger ; alis fulvis, nervis flavo-fulvis.

Long. 15 millim.

Hab. Omilteme in Guerrero 8000 feet (H. H. Smith).

Head opaque, coarsely alutaceous; the top with a few long hairs; the cheeks with

a thick patch of dull greyish-white pubescence; eyes not curved at the top, straight,

diverging below ; the ocelli in a triangle, separated from the eyes by a much greater

distance than they are from each other; there is a short, shining, straight furrow

above the antenne; clypeus projecting, the apex broadly rounded, shining, and

punctured ; occiput transverse. Antenne comparatively short, stout; the third joint

distinctly longer than the fourth. Thorax opaque, alutaceous, sparsely covered with

black pubescence. The prothorax shorter than the head, rounded and narrowed from

the apex to the base ; the apex arcuate, but not forming a completely rounded curve.

Scutellum moderately convex, finely punctured, not narrowed towards the apex. The

median segment with a gradually rounded slope. Abdomen shining, subsessile, thinly

covered with long hairs; longer than the head and thorax united; the pygidium

rugose, thickly covered with dull fuscous hair. ‘Tibi serrate, the long spur of the hind

pair not reaching to the middle of the metatarsus; the tarsi thickly spined ; the tooth on

the claws stout, placed near the base; the fore spurs testaceous. Wings: radial cellule

long, narrow, lanceolate; the second cubital cellule narrower at the top and bottom

than the third, the top and bottom about equal in length; the first transverse cubital

nervure straight, the second elbowed a little below the middle, the third also elbowed.

VY 14. Salius alpestris. (Tab. X. figg. 26, wing ; 26 a, male organ.)

Long. 7 millim. 6.

Hab. Mexico, Sierra de las Aguas Escondidas in Guerrero 9500 feet (Hl. H. Smith).

Similar in coloration and texture of body to S. smithi; but easily known from it by

the long spur of the hind tibie reaching distinctly beyond the middle of the meta-

tarsus, the second cubital cellule at the top twice the length of the third, and the apex

of the clypeus transverse, and also by its much smaller size. Eyes diverging beneath»

straight. The ocelli not forming a triangle, the hinder ones separated from the eyes

2 AA 2

180 HYMENOPTERA.

by a distinctly greater distance than they are from each other; an indistinct furrow

runs down from them. Clypeus with the sides obliquely truncated ; the apex trans-

verse. Pronotum very slightly narrowed from the apex to the base ; arcuate behind,

but not rounded in the middle. Median segment with a gradually rounded slope.

Abdomen shorter than the head and thorax united ; shining, compared to the thorax,

which is alutaceous ; the apex thickly haired. For alar neuration, see ‘lab. X. fig. 26.

15. Salius guatemalensis. (Tab. X. fig. 27, head.)

Niger, pruinosus ; alis hyalinis, antice late violaceis. @.

Long. 13 millim.

Hab. GuateMALA, El Reposo 800 feet (Champion).

Eyes almost parallel, very slightly converging at the top, reaching near to the base

of the mandibles. Ocelli almost forming a triangle, the hinder ones separated from

the eyes by a little greater distance than they are from each other. Clypeus elongate,

obliquely narrowed towards the apex, which is subtransverse. Head narrow, a little

concave behind ; below the antenne densely covered with a silvery pile; above the

antenne more sparsely pilose and bearing long pale hair, this being also the case

behind. Mandibles elongate, shining, the apex piceous. Thorax opaque, alutaceous.

Pronotum moderately elongate, fully as long as the head. Median segment with a

rather sharply rounded slope; its central channel rather broad ; the base bearing a

silvery pubescence ; and there are two round spots of silvery pubescence at the apex.

Antenne as long as the head and thorax united; pruinose. Abdomen with a distinct

petiole at the base; shining, pruinose, the apical segment thickly clothed with blackish

hairs, these being rufous at the apex. Wings: second cubital cellule subquadrate,

considerably shorter than the third; the first transverse cubital nervure sharply

oblique, the second straight; the first recurrent nervure received in the apical third,

the second distinal before the middle. Legs elongate, pruinose; the tibial spines

sharp, elongate ; the long spur of the hind tibie not reaching to the apex of the

metatarsus ; the middle tooth of the claw short, sharp.

J 16. Salius levis.

Priocnemis levis, Smith, New Sp. Hymen. p. 157’.

Hab. Costa Rica, Caché, Volcan de Irazu 6000 to 7000 feet ! (Rogers).

17. Salius centralis. (Tab. XI. fig. 1, wing.)

Niger, longe albo-pilosus, abdomine 10-maculato ; alis hyalinis, apice fumatis. 9°.

Long. 16 millim.

Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Eyes almost parallel, a little converging at the top, reaching near to the base of the

SALIUS. 181

mandibles. Ocelli hardly forming a triangle, the hinder ones separated from the eyes

by one and a half times the distance they are from each other. Clypeus broadly

convex; the middle and sides projecting in a blunt point, the intermediate space

being roundly incised. Head closely punctured, covered with longish white hair ;

almost transverse behind, the sides rounded; mandibles at the base covered with a

pale pile. Antenne elongate, also covered with a pale pile; the third joint about one

quarter longer than the fourth. Pro- and mesonotum opaque, closely punctured ;

scutellum and metanotum shining, impunctate, with a bluish tinge. Prothorax short, —

broadly rounded. Pleure shining. Median segment short, with a rather obliquely

rounded slope from the base to the apex, and bearing a broad shallow (at the base

scarcely visible) furrow down the centre. The greyish pubescence on the pro- and

mesonotum is dense and moderately long, that on the pleure, scutellum, and meta-

notum sparser; the median segment bears a short pale pile, and towards the apex long

greyish hairs. Abdomen shining, almost bare at the base; the apical segments

rather densely covered with pale hair, the first four with an obscure (discoloured ?)

yellow mark at the sides. Pygidial area densely covered with stiff, dull rufous,

pubescence. Wings: the second cubital cellule small, the first transverse cubital

nervure being longer than the second, and with an oblique slope; the second cubital

nervure is not very oblique and roundly curved—at the top it is about one fourth less

in length than the third at the top, at the bottom it is about the length bounded by

the second recurrent and second transverse cubital nervures; the first recurrent

nervure is received a little beyond the middle of the cellule, the second beyond the

basal third. The wings have a fuscous tinge; and there is a small cloud in and below

the apex of the second cubital cellule; the apex has also a narrow cloud. The first

spot on the abdomen is small and round, the second is the largest and longest, the

other spots being smaller. Legs pruinose; the tarsi very long; the long spur of the

hind tibie not reaching to the middle of the metatarsus.

“18. Salius teapensis.

Niger, argenteo-pilosus ; alis clare hyalinis, late brunneo-bifasciatis. 9°.

Long. 11 millim.

Hab. Muxico, Teapa in Tabasco (H. H. Smith).

Head short, broader than the thorax ; from below the ocelli white, with a silvery

pile ; the vertex with the pile sparser, not obscuring the colour, and bearing a few

longish hairs. Eyes curved, distinctly converging at the top, hardly so beneath; the

ocelli forming a triangle, the hinder ones separated from each other by about the

same distance they are from the eyes. Clypeus gaping, the apex transverse. The

head is alutaceous; the base of the mandibles finely rugose. ‘Thorax alutaceous, more

or less white with the silvery pile. Prothorax shorter than the head, the sides rounded,

bluntly arcuate behind. Scutellum broad, not narrowed towards the apex, convex.

182 : HYMENOPTERA.

Median segment short, rather sharply rounded towards the apex. Abdomen almost

shorter than the thorax and as broad as it; the sides of the segments with a silvery

pile ; the apical segment opaque, alutaceous, covered with long brownish hairs; the

apex rounded, pale. Legs densely silvery-pruinose ; the hind tibie and tarsi thickly

and sharply spined; the long spur of the hind tibie reaches a little beyond the

middle of the metatarsus; the claws with one stout straight tooth. Wings: radial

cellule elongate, sharply lanceolate from the second transverse cubital nervure ; the

second cubital cellule at the top a very little, at the bottom considerably, shorter than

the third; the first transverse cubital nervure oblique, slightly elbowed at the bottom,

‘the second a little curved, the third still more curved; the first recurrent nervure is

received beyond, the second in front of, the middle of the cellule; the first cloud

extends along either side of the basal nervure and is as wide as the tops of the second

and third cubital cellules united, the second extends from the first to the third

transverse cubital nervures.

J | ;

19. Salius nivalis. (Tab. XI. figg. 2, head: 2a, wing.)

Ceruleus ; alis fusco-violaceis. @.

Long. 14 millim.

Hab. Mexico, Xucumanatlan in Guerrero 7000 feet (H. H. Smith).

Head almost opaque, very finely punctured, and bearing a few longish black hairs.

Eyes with a curve at the top, somewhat converging beneath. Ocelli almost forming a

triangle, the hinder ones separated from the eyes by about twice the distance they are

from each other; an ohscure furrow runs down from them. Clypeus with the sides

obliquely truncated, the truncated lateral parts being nearly as long as the apical part,

which is bluntly rounded. Occiput almost transverse, the sides rounded. Prothorax

as long as the head, the base forming a distinct neck, the sides rounded, the apex

bluntly arcuate. Thorax with the pro- and mesonotum somewhat shining, and

punctured like the head ; the rest of the thorax opaque, alutaceous, and almost black.

Median segment with a rounded slope, obscurely transversely striolated. Abdomen

petiolate, very smooth and shining, almost shorter than the thorax, the apex sharply

pointed ; the pygidium covered with longish black, at the apex with fuscous, hair.

Antenne moderately long, filiform, black. Legs black, rather long ; the tibie with a

double row of short thin spines, not serrate, the long spur of the hind pair not reaching

to the middle of the metatarsus; the claw with a short spine near the base. For

wings, see Tab. XI. fig. 2a.

‘ 20. Salius impiger.

Pompilus impiger, Cresson, Proc. Bost. Nat. Hist. Soc. xii. p. 371°.

Hab. Mexico, Orizaba (Sumichrast ').

SALIUS. 183

ii. The claws with two teeth ; the first recurrent nervure received in the second

transverse cubital nervure. (Mygnimia.)

J 21. Salius mexicanus. (Tab. XI. fig. 3, wing.)

Mygnimia mexicana, Cresson, Trans. Am. Ent. Soc. i. p. 148°; Proc. Bost. Soc. Nat. Hist. xii.

p- 8797. *

Hab. Mexico, Amula in Guerrero 6000 feet, Cuernavaca in Morelos (H. H. Smith),

Vera Cruz (Sartorius1?), Atoyac (Schumann), Orizaba (Sumichrast®); GUATEMALA,

Purula in Vera Paz, Zapote (Champion) ; PANAMA, Volcan de Chiriqui 4000 to 6000

feet (Champion).

A species very variable in size (13-32 millim.). The antenne sometimes have the

tips blackish ; and the relative lengths of the second and third cubital cells vary.

S 22. Salius rogersi. (Tab. XI. fig. 4, ¢ organ.)

Long. 30-32 millim.

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

Similar in coloration to S. mexicanus, having the body deep velvety-black ; the

antenne fulvous, black at the base; and the wings bright ferruginous, violaceous at

the base and apex. Longer; the labrum and clypeus roundly incised at the apex;

the body much more thickly covered with long black hair; the hinder ocelli separated

from the eyes by almost double the distance they are from each other (in S. mexicanus

by about the same distance); the median segment more strongly transversely striated

and more distinctly channelled down the centre ; the pygidium not so thickly nor so

strongly haired.

The male is similarly coloured; but it has the base of the wings more largely

violaceous, the body more thickly haired, and the antenne stout, the joints not dilated.

The male of S. mexicanus is described as having the “face, clypeus, antenna, except

at the base above, and posterior margin of the prothorax and anterior legs, except at

the base, yellow.”

In the female the apical two joints of the antenne are black. As in S. mexicanus,

there is a subhyaline space with a macula in its centre at the base of the discoidal

cellule.

\/ 28. Salius dolichocerus. (Tab. XI. figg. 5, wing; 5a, ¢ organ.)

Long. 23-27 millim.

Hab. GuaTeMaLa, Paso Antonio (Champion); Panama, Volcan de Chiriqui 4000 feet

(Champion).

This also has the S. meaicanus type of coloration, except that the five apical joints

184 HYMENOPTERA.

of the antenne are dark fuscous; but it may be at once distinguished from that

species, and from S. rogersi, by the long and slender (not curled) antenne, the more

slender body, the eyes converging more at the top, and the absence of the clear space

in the discoidal cellule. The apex of the labrum and clypeus is shallowly sinuate ;

the hinder ocelli are separated from the eyes by twice the distance they are from

each other; the median segment is indistinctly striated ; the body is deep velvety-

black; the head and thorax are pilose; the hairs on the pygidium towards the apex

are dull fulvous.

The male is similarly coloured to the female, and it has the antenne equally long

and slender. The genital organs are very different from those of S. rogers?, as will be

seen by reference to the figures.

v 24. Salius ustulatus.

Hemipepsis ustulata, Dablb. Hymen. Europ. i. p. 123°.

Mygnimia ustulata, Smith, Cat. Hymen. iii. p. 189°; Cresson, Trans. Am. Ent. Soc. i. p. 1438 °.

Priocnemis ustulatus, Tasch. Zeitschr. f. ges. Naturw. xxxiv. p. 88 (1869) *.

Hab. Mexico! 23,

This species has the antennez black.

V 95. Salius morelosensis. (Tab. XI. fig. 6, ¢ organ.)

Long. 30 millim.

Hab. Mexico, Cuernavaca in Morelos (H. H. Smith).

Black, velvety; the head and thorax densely pilose; the wings reddish-fulvous,

black at the base and apex. yes slightly converging beneath, hardly at all above;

the ocelli in a curve, the hinder ones separated from the eyes by a somewhat greater

distance than they are from each other. Antenne stout, the apical joints a little

dilated. Median segment transverse at the apex, slightly transverse-striated. Alar

neuration as in S. mexicanus. The long spur on the hind tibie reaches to the middle

of the metatarsus.

This can hardly be the S. ustulatus of Dahlbom or 'Taschenberg.

“26. Salius panamensis.

Mygnimia panamensis, Cresson, Trans. Am. Ent. Soe. i. p. 150°.

Hab. Panama },

v 27. Salius verepacis. (Tab. XI. fig. 7, wing.)

Niger, flagello antennarum fulvo; alis fusco-violaceis. ¢.

Long. 22 millim.

Hab. Guatemaa, Purula in Vera Paz (Champion).

SALIUS.—POMPILUS. _ 185

Deep black; the head and thorax opaque, velvety ; the abdomen shining, the apical

segments slightly pruinose; pygidium rough, thickly covered with long black hairs.

Clypeus slightly incised in the middle. Head and thorax bearing long black hair ;

coxee and femora sparsely covered with long hair.

S. panamensis agrees with S. verepacis in having fuliginous wings; but it is dark

metallic green, the apical half of the antenne only is fulvous, the wings are white at

the apex, and the first recurrent nervure is not interstitial.

POMPILUS.

Pompilus, Fabricius, Ent. Syst., Suppl. p. 246 (1798) ; Kohl, Verh. zool.-bot. Ges. Wien, xxxiv.

p. ol.

I agree with Kohl in treating Planiceps, Ferreola, &c. as mere sections of Pompilus.

Head flat, the antenne short and inserted immediately over the clypeus, the thorax

elongated, the fore tibie dilated and flattened, the fore wings with only two cubital

cellules.—PLaniceps, Latr. (Species 1-3.)

Y 1. Pompilus (Planiceps) pulchritarsis.

Niger vel ceruleus ; alis fuliginosis.

Long. 16 millim.

Hab. Mexico, Chilpancingo in Guerrero 4600 feet (Champion).

Head opaque, shagreened, sparsely covered with black hairs; the cheeks with a

whitish pubescence; eyes converging beneath; the ocelli almost in a triangle, the

hinder ones separated from each other by, if anything, a greater distance than they are

from the eyes; clypeus rounded at the apex. Thorax opaque, alutaceous ; the pleure

more shining; the pronotum quadrate, more than twice longer than the head. The

scutellum is distinctlynarrowed from the base to the apex. The mediansegment is as long

as the mesothorax ; the apex rounded above and with an oblique slope. Abdomen shorter

than the thorax, the apex with longish hairs; the pygidium smooth. The first recur-

rent nervure is received a little beyond the middle of the cellule, the second beyond

the second transverse cubital nervure; the first transverse cubital nervure curved, the

second straighter and semi-oblique. Legs longish; the fore tibie thickened and

dilated ; the fore tarsi slightly incised at the base, ciliated, without comb-spines; the

tibiee sparsely spined; the tarsi thickly covered with short spines; the long spur of

the hind tibize does not reach the middle of the metatarsus. |

We have also received a Pompilus from North Yucatan (Gaumer), 9 millim. in

length, which only differs from the type of P. pulchritarsis, so far as I can make out,

apart from size, in having the fore tibia more rounded and not so much flattened.

BIOL. CENTR.-AMER. Hymenopt., Vol. IL, August 1893. 2 BB

186 HYMENOPTERA.

2. Pompilus (Planiceps) concolor.

Planiceps concolor, Smith, Journ. Ent. i. p. 80'; Cresson, Trans. Am. Ent. Soe. i. p. 1877.

Hab. Mexico}.

This species can hardly be synonymous with P. pulchritarsis: it is only 5 lines in

length ; is deep blue, with brilliant reflections ; the abdomen is iridescent ; the posterior

wings are pale fusco-hyaline ; the anterior tarsi are rufo-testaceous.

~ 3. Pompilus (Planiceps) notabilis.

Flaniceps notabilis, Smith, Journ. Ent. i. p. 80’; Cresson, Trans. Am. Ent. Soc. i. p. 1877.

Hab. Mexico}.

We have received a specimen from Vera Cruz (H. H. Smith) apparently belonging

to this species. It has the clypeus broadly rounded at the apex, the eyes converging

beneath, the hinder ocelli separated from each other by a somewhat greater distance

than they are from the eyes, the first recurrent nervure received in the middle of the

cellule, the second a little beyond the middle of the second transverse cubital nervure.

The following six species agree with the foregoing in having an elongated prothorax

and somewhat flattened head ; but they have not the fore tibie flattened and dilated,

and have three cubital cellules. (Species 4-9.)

| 4. Pompilus telemon.

Ceruleus ; alis fuliginosis.

Long. fere 18 millim.

Hab. Guatemata, San Gerénimo (Champion).

Blue, with purplish tints. Head semi-opaque, more shining over the antenne,

velvety, sparsely covered with longish black hairs; the eyes slightly converging

beneath ; the hinder ocelli separated from the eyes by a greater distance than they are

from each other; a broad shallow channel runs from them to the eyes; apex of the

clypeus transverse. Antenne black, short, stout; the third joint longer than the fourth.

Prothorax fully one half longer than the head, rounded and narrowed in front, slightly

rounded at the apex inwardly. Scutellum much narrowed towards the apex. Median

segment at the apex oblique and sharply truncated; in the middle transversely and

coarsely striated ; concave at the apex. Abdomen as long as the thorax and narrower

than it, compressed ; the pygidium bearing longish black hairs. The first and third

transverse cubital nervures curved, somewhat roundly elbowed, the second straight ;

the second cubital cellule at the top and bottom a little longer than the third; the first

recurrent nervure received nearly in the middle of the cellule, the second distinctly

POMPILUS. 187

before the middle; the basal nervure and the anal nervure in the hind wings inter-

stitial. Legs stout, of medium length ; the tibial and tarsal spines stout ; the long spur

of the hind tibize not reaching the middle of the metatarsus, thin, sharply pointed.

5. Pompilus eubule. (Tab. XI. figg. 8, head; 8a, wing.)

Long. 15 millim.

Hab. Mexico, Ventanas in Durango 2000 feet (forrer), Amula in Guerrero 6000

feet (H. H. Smith).

Identical as regards form, coloration, and sculpture with P. telemon, but easily

known from it by the apex of the clypeus being rounded, not transverse; the thorax

covered with long black hairs; the prothorax at the base broader and without a neck ;

the median furrow wider and quite distinct; the abdomen shorter and broader ;

the long spur of the hind tibie shorter, the basal part dilated and bearing a brush

of thick hairs; the second cubital cellule in proportion longer than the third, and

receiving the recurrent nervure very obliquely beyond the middle.

\’ 6. Pompilus macronotum.

Pompilus macronotum, Kohl, Verh. zool.-bot. Ges. Wien, xxxvi. p. 336".

Hab. Mexico, Cuernavaca (Bilimek ').

P. macronotum may be known from the preceding two species by the eyes not

converging above, thus making the distance separating the eyes from the hinder ocelli

much greater than these are from each other; by the front being finely punctured, and

by the long spur of the hinder tibie reaching to the middle of the metatarsus.

7. Pompilus impudicus.

Niger, argenteo-pilosus; capite, pronoto mesonotoque antice rufo-hirtis ; alis fumatis, lacteo fasciatis.

Long. 12 millim. 9.

Hab. Panama, Pefia Blanca 3000 to 4000 feet (Champion).

Head short, convex in front, concave behind, densely covered with a reddish-golden

pubescence to near the antenne ; the cheeks, face, and clypeus shining, sparsely covered

with a whitish pubescence ; eyes converging beneath ; the ocelli in a small triangle,

the hinder ones separated from each other by a less distance than they are from the

eyes; clypeus projecting, the sides oblique, the apex transverse. Pronotum quadrate,

longer than the mesothorax. Scutellum convex, narrowed towards the apex; its

base golden-pubescent. The base of the median segment with a broad dense band

of whitish pubescence; the apex sharply oblique. Pleure pruinose, plumbeous. .

Abdomen shorter than the thorax, shining; a broad’ band of white pubescence on

the apex of the first segment; the apex of the third segment with a broad white band

2 BB 2

188 HYMENOPTERA.

narrowed in the centre; the fourth segment with a narrow white band at the apex;

the pygidium densely covered with a white pubescence. Legs pruinose, plumbeous; the

spurs short, thick; the long spur of the hind tibiz does not reach the middle of the

metatarsus. ‘The antenne shorter than the thorax; the third joint a little longer than

the fourth. Wings dark fuscous, a greyish cloud before the basal nervure, and a

larger one at the radial cellule, the apex also being lighter; basal nervure interstitial.

~ 8. Pompilus pictus.

Pompilus pictus, Kohl, Verh. zool.-bot. Ges. Wien, xxxvi. p. 338, t. 10. fig. 10, t. 11. fig. 131.

Hab. Mexico, Cuernavaca (Bilimek 1),

‘ 9. Pompilus bugabensis.

Niger, argenteo-pilosus, pronoto aureo hirto, abdomine albo plagiato ; alis lacteis, fusco bitasciatis.

Long. 12-14 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Head short, broad, behind almost transverse, shining, finely punctured; a thick

band of golden pubescence behind the ocelli; the cheeks, face, and clypeus with

silvery pubescence ; the eyes curved above, a little converging below ; the ocelli in a

large triangle, the hinder ones separated from each other by a distinctly greater distance

than they are from the eyes ; clypeus projecting, sharply narrowed from the base, the

apex almost transverse. Antenne shorter than the thorax; the third and fourth joints

subequal. Pronotum quadrate, fully one half longer than the head, densely covered

with golden pubescence. Mesonotum opaque, finely rugose in front; the pleuree

densely covered with silvery pubescence, except below the tegule ; the scutellum con-

vex, slightly narrowed towards the apex. The median segment densely covered with

silvery pubescence, the apical half oblique. Abdomen longer than the head and thorax

united, the apex acuminate, shining, laterally pruinose; the pygidium not clearly

defined, covered with a whitish pubescence. Legs densely pruinose, shortish, the

spines short and thick ; the long spur of the hind tibie not reaching to the middle of

the metatarsus. Wings short; the second cubital cellule quadrate, longer than the

third, which converges at the top, and receives the recurrent nervure shortly before the

middle; the first recurrent nervure also received before the middle; the basal nervure

interstitial ; the anal nervure in hind wings received before the cubital nervure.

To this section probably belong :—

10. Pompilus variegatus.

Ferreola variegata, Smith, Journ. Ent. i. p. 398 '.

Hab. Mexico! (Mus. Brit.).

POMPILUS. 189

Vou. Pompilus formosus.

Ferreola formosa, Smith, Journ. Ent. i. p. 399*.

Hab. Mexico!, Oaxaca (Mus. Brit.).

This is closely related to P. bugabensis.

J .

12. Pompilus aztecus.

Ferreola azteca, Cresson, Proc. Bost. Soe. Nat. Hist. xii. p. 876°.

Hab. Mexico, Vera Cruz (Sartorius *).

v 13. Pompilus levifrons.

Ferreola levifrons, Cresson, Proc. Bost. Soc. Nat. Hist. xii. p. 376°.

Hab. Mexico, Orizaba (Sumichrast 1).

This species is probably synonymous with either P. telemon or P. eubule ; I cannot

make it out from the description.

I here place six species, which only agree in having two cubital cellules; they

differ from Planiceps in not having the head flattened, nor the anterior tibie dilated.

P. smithianus is a typical Aporus and has the prothorax quadrato-elongate.

v 14. Pompilus tzniatus.

Pompilus teniatus, Kohl, Verh. zool.-bot. Ges. Wien, xxxvi. p. 336 '.

Hab. Mexico, Orizaba (Bilimek *).

\ 15. Pompilus (Aporus) yucatanensis.

Long. 7 millim.

Hab. Mexico, North Yucatan (Gauwmer).

Black, covered with a sericeous pile, the abdominal segments banded with it. Head

densely covered with a white sericeous pile; eyes slightly converging beneath; the

hinder ocelli separated from each other by, if anything, a greater distance than they

are from the eyes; the apex of the clypeus almost transverse. Antenne stout, covered

with a microscopic pile; the third joint longer than the fourth. Thorax shining,

sparsely covered with a short pubescence. The prothorax as long as the head, not

much narrowed towards the base ; at the apex almost transverse. The median segment

rather long; the apex oblique, at the sides projecting into stout teeth-like processes.

Abdomen as long as the thorax, pruinose, sessile ; the apex blunt, bearing some long

black hairs; the apex of the penultimate ventral segment deeply incised. The anterior

tarsi only ciliated beneath, and with a stout spine at the apices of the joints; the spurs

190 HYMENOPTERA.

pale testaceous at the base; the tibie with a few long spines; the long spur of the

hind tibiz reaches nearly to the middle of the metatarsus. The fore wings with only

two cubital cellules; the second cubital cellule receiving both the recurrent nervures,

the first at a slightly greater distance from the base than the second is from the apex.

The wings are short.

J 46. Pompilus (Aporus) decorus.

Tong. 12 millim.

Hab. Mexico, Xucumanatlan in Guerrero 7000 feet (H. H. Smith).

Dark blue, pruinose. Head shagreened, above bearing long black hairs, the cheeks

and clypeus with a silvery pubescence, transverse behind ; eyes converging at the top;

the hinder ocelli separated from each other by a greater distance than they are from

the eyes; clypeus transverse at the apex; there is an indistinct furrow on the front.

Thorax alutaceous, velvety; the prothorax broader than long, behind arcuate, and

bearing some longish black hairs. Scutellum becoming gradually narrowed to the

apex. The median segment with a gradually rounded slope to the apex, distinctly

furrowed down the centre. Abdomen subsessile, a little longer than the head and

thorax united ; the pygidium and ventral surface with some long black hairs. ‘Tibial _

spines long, pale; the long spur of the hind tibie reaches to the middle of the meta-

tarsus. Wings dark fuscous, with lighter shades; the second cubital cellule large, the

first recurrent nervure received near the basal third, the second beyond the apical

fourth ; both the transverse cubital nervures are curved, thus narrowing the second

cubital cellule at the top; the basal nervure is interstitial; the anal nervure in hind

wings is received beyond the cubital.

J 17. Pompilus monticola.

Long. 7 millim. 6.

Hab. Mexico, Xucumanatlan in Guerrero 7000 feet (7. H. Smith).

Black, pruinose, with bluish tinges. Head covered thickly with long pale fuscous

hairs; antenne short, thick, inserted free from the top of the clypeus, the third joint,

if anything, shorter than the fourth; eyes distinctly converging beneath; the hinder

ocelli separated from the eyes by about the same distance they are from each other;

apex of the clypeus transverse. Prothorax shorter than the head, narrowed towards the

base, the apex rounded. Median segment gradually rounded towards the apex, the

extreme apex in the middle faintly hollowed. The entire thorax densely covered with

longish silvery hair. Abdomen shorter than the thorax, closely covered with a silvery

pile, sessile, compressed. Legs moderately long and stout, covered with a silvery pile ;

the base of the fore tarsus curved; the tibie almost ‘without spines; the long spur of

POMPILUS. 19]

the hind tibie reaching beyond the middle of the metatarsus. Fore wings with only

two cubital cellules, the second a little narrowed at the top; both transverse cubital

nervures curved ; the first recurrent nervure received before the middle of the cellule,

the second clearly beyond the second transverse cubital; the basal nervure interstitial ;

the anal nervure in hind wings received before the cubital. The wings are subhyaline,

the apex smoky. The head is distinctly convex in front; behind almost transverse.

/ 18. Pompilus flavomarginatus.

Niger, linea pronoti, calcaribus maculisque abdominis flavis; alis hyalinis, nervis pallidis.

Long. 7 millim. 6.

Hab. Mexico, Temax in North Yucatan (Gaumer).

Antenne stout, densely covered with a stiff black pile; the third joint shorter than

the fourth, the seventh and eighth deeply incised above (the other joints broken off).

The face long, from the ocelli densely covered with long silvery pubescence; the eyes

reaching to the base of the mandibles, curved, sharply converging at the bottom; the

hinder ocelli separated from the eyes by about the same distance they are from each

other; the vertex where the ocelli are is raised; the apex of the clypeus is rounded.

Thorax covered with a silvery pubescence ; the prothorax as long as the head, rounded

in front, angled behind. Scutellum broad at the base, narrowed towards the apex.

The median segment with a gradually rounded slope to the apex, finely punctured.

Abdomen subpetiolate, compressed, the apex laterally oblique. Legs short, covered

with a silvery pubescence; the fore tibie dilated towards the apex; the base of the

fore metatarsus incised ; the fore tarsi with a few short spines; the tibial spines short ;

the long spur of the hind tibie reaches nearly to the apex of the metatarsus. Wings

pale fuscous, the nervures pale; the basal nervure not interstitial; there are only two

cubital cellules, as in Planiceps; the second cubital cellule large, narrowed at the top;

the first recurrent nervure received close to the middle of the cellule, the second

beyond the second transverse cubital nervure; the anal nervure in the hind wings is

interstitial. There is a broad pale yellow band on the edge of the pronotum, a broad

one on the first and a smaller one on the second abdominal segment, and the spurs are

white.

A very distinct species, remarkable for the deep incisions in the antennal joints, the

close converging of the eyes beneath, and the raised vertex.

Vv 49, Pompilus (Aporus) smithianus, (Tab. XI. figg. 9, head; 94a, wing.)

Niger, abdomine rufo; alis fumatis.

Long. 7 millim. 9.

Hab. Mexico, Atoyac in Vera Cruz (H. H. Smith).

Head and thorax pruinose. Eyes but very slightly converging at the top; the

192 HYMENOPTERA.

hinder ocelli separated from the eyes by a greater distance than they are from ‘each

other; apex of the clypeus truncate; the extreme apex of the clypeus and the

greater part of the mandibles rufous. Pronotum longer than the head, quadrate, the

sides straight, the apex transverse. Scutellum wider than long; the apex rounded.

Median segment with the apex oblique, the top rounded, the centre excavated, densely

covered with a silvery pubescence. Abdomen shorter than the head and thorax

united, shining, subpetiolate, the apex sharply pointed. Legs comparatively short,

covered with asilvery pile; the long spur of the hinder tibize does not reach the middle

of the metatarsus; the tibiee with some weak spines. The antenne are as long as

the thorax, stout; the third joint a little longer than the fourth. The fuscous wings

have a lighter cloud running down from the base of the radial cellule, and another

proceeds from the base of the second cubital cellule to the apex ; the basal nervure is

not interstitial; in the hind wings the anal nervure is received a long distance in front

of the cubital.

The next species is easily recognized by the apex of the median segment being

excavated and projecting laterally as stout teeth, and by the tibize being without spines,

the smaller spur of the hind pair flattened and dilated.

J _ 20. Pompilus sinaloz.

Long. 9 millim.

Hab. Mexico, Presidio de Mazatlan (Forrer).

Black, with a faint bluish tinge; wings violaceous. Eyes converging beneath; the

hinder ocelli separated from each other by a greater distance than they are from the

eyes; clypeus broadly rounded at the apex. Antenne as long as the head and thorax

united, covered with a microscopic pile; the third joint longer than the fourth.

Prothorax as long as the head, arcuate at the apex. The median segment oblique

and concave at the apex, the sides projecting above into blunt teeth; there is a

depression at the base. Abdomen as long as the thorax; the apex bare. Legs long,

stout; the tibie bare; the claws stout, sub-bifid; the hind tibial spurs short (about

one-fourth the length of the metatarsus), stout, the shorter spur leaf-like ; the anterior

spurs longer and sharper.

Species 21-41 have black or bluish bodies, with fuscous, blackish, bluish, or violaceous

wings. From the similarity of their coloration, and from many of the descriptions not

making any mention of structural peculiarities, the species are not easily recognized or

identitied. Many of them vary from black to blue in colour.

POMPILUS. 193

The anai nervure in the hind wings not interstitial. (Species 21-23.)

J 21. Pompilus montezuma. (Tab. XI. fig. 10, wing.)

Long. 10 millim.

Hab. Mexico, Chilpancingo 4600 feet, and Omilteme 8000 feet, both in Guerrero

(Hl. H. Smith).

Dark blue, the males with a purplish tinge; wings violaceous; the head, thorax, and

base of abdomen covered densely with longish black hair. Eyes a little converging

above; the hinder ocelli separated from each other by about the same distance they are

from the eyes; clypeus finely punctured round the apex, which is slightly incurved.

Antenne longer than the head and thorax united; the third joint distinctly longer than

the fourth. Prothorax a little shorter than the head, quadrate, rounded in front, the

apex bluntly arcuate. Median segment with the lower half obliquely truncate.

Abdomen shorter than the head and thorax united, the apex with a few longish hairs ;

the pygidium rough. Legs stout; the tibial spines long; the long spur of the hind

tibiz not reaching much beyond the middle of the metatarsus; claws with a stout

basal tooth. For neuration, see Tab. XI. fig. 10.

The male is more slenderly built. It has the antenne longer than the head and

thorax united, stout, tapering towards the apex, with the third joint longer than the

fourth ; the apex of the abdomen bare, the last segment deeply incised at the apex, the

abdomen itself longer than the head and thorax united.

This species bears a great resemblance to P. alticola; but it may be easily separated

by the interstitial basal nervure and by the apex of the pronotum not being angled.

22. Pompilus mexicanus.

Pompilus mexicanus, Taschenberg, Zeitschr. ges. Naturw. xxxiv. p. 52 (1869)’.

Hab. Mexico}.

23. Pompilus zapotecus, (Tab. XI. fig. 11, wing.)

Long. 7 millim.

Hab. Mexico, Xucumanatlan in Guerrero 7000 feet (Hf. H. Smith).

Dark blue, sparsely covered with a minute white pubescence; wings subhyaline, the

apex from the end of the radial cellule smoky. Head broader than the thorax; eyes

converging above; the hinder ocelli separated from the eyes by a greater distance than

they are from each other; clypeus short, densely covered with a white pubescence, the

sides oblique, the apex sinuate; there is a furrow above the antenne. Antenne stout,

as long as the thorax, the third joint distinctly longer than the fourth. Prothorax

shorter than the head, the apex bluntly angled. Median segment with a gradually

rounded slope to the apex; the sides projecting into blunt teeth. Abdomen as long

BIOL. CENTR.-AMER., Hymenopt., Vol. IL., September 1893. 2 cc

194 HYMENOPTERA.

as the thorax, the apex with a few longish hairs. Legs longish, stout; the tibial

spines short; the long spur of the hind tibie reaching beyond the middle of the

metatarsus; the claws with a short basal tooth, The basal nervure is not interstitial.

For neuration, see Tab. XI. fig. 11. The neuration, especially as regards the form of

the second cellule, is quite distinct. A well-marked species.

The anal nervure in hind wings interstitial; the basal nervure not interstitial.

( (Species 24-41.)

24. Pompilus pulchrinellus. (Tab. XI. figg. 12, head; 124, wing.)

Long. 18 millim.

Hab. Mexico, Northern Sonora (Morrison).

Head alutaceous, transverse behind, covered with long dark fuscous hairs; eyes

diverging beneath; the hinder ocelli separated from each other by a less distance than

they are from the eyes; clypeus transverse at the apex, more shining than the vertex,

and bearing a few punctures. Thorax alutaceous, bearing long black hairs; the

prothorax short, behind angular. Median segment with the apex having an oblique

hollowed slope, and furrowed down the centre. Abdomen sessile, shorter than the

head and thorax united; the pygidium and the ventral surface with some long black

hairs. Legs longish; the tibial spines short and thick; the long spur of the hind

tibie reaching to the middle of the metatarsus; the fore tarsi with long comb-spines,

the tarsi beneath thickly spinose ; the long spines at the apices of the joints and the claws

testaceous; the claws simple, dilated at the base. For neuration, see Tab. XI. fig. 12 a,

J 25. Pompilus alticola. (Tab. XI. fig. 13, wing.)

Long. 12 millim.

Hab. Mexico, Xucumanatlan in Guerrero 7000 feet (A. H. Smith).

Black, sparsely pilose; wings short, fuliginous, with a slight purplish tinge. yes

almost parallel; the ocelli hardly forming a triangle, the hinder ones separated from

each other by a distinctly less distance than they are from the eyes; clypeus minutely

punctured, the apex broadly rounded, the centre slightly incurved. Antenne short,

microscopically pilose ; the third joint longer than the fourth. Prothorax shorter than

the head; the apex bluntly angulated. Median segment gradually rounded to the

apex; a broad shallow furrow down the centre. Abdomen shorter than the head and

thorax united, subsessile; the apex above bearing thick bristle-like hairs, beneath the

hairs are softer and more slender. Legs stout; the tibial spines short and thick; the

long spur of the hinder tibie reaching a little beyond the middle of the metatarsus ;

the claws with a short basal tooth. For neuration, see Tab. XI. fig. 13. The basal

nervure is not interstitial.

The male has the antenne longer than the head and thorax united, microscopically

POMPILUS. 195

pilose, tapering a little towards the apex, and with the third joint rather longer than

the fourth; the third ventral segment slightly pilose, the fourth and fifth densely

covered with long black hairs; the apical segments with short hairs; and the fourth

segment at the apex broadly incised.

The resemblance of this species to P. interstitialis is very close; but they may be

separated by P. interstitialis having the third cubital cellule longer than the fourth

(the reverse being the case in P. alticola), by the mass of bristle-like hair being absent

(in P. alticola the apical segment bears long sparse hairs all over it), and by the long

spur of the hind tibie being fully three-fourths the length of the metatarsus (in

P. alticola it reaches just beyond the middle). In P. interstitialis the basal nervure

"7 be said to be interstitial.

26. Pompilus toluca. (Tab. XI. figg: 14, head; 144, wing.)

Long. 13 millim.

Hab. Mexico, Xucumanatlan in Guerrero 7000 feet (H. H. Smith).

In colour, sculpture, and size, and in having the basal nervure not interstitial, this

species agrees with P. alticola; but it is a much stouter species, having a broader

body, and has a different neuration (compare figures). It is, however, more particularly

to be known from P. alticola by the long spur of the hind tibie not reaching the

middle of the metatarsus, by the absence of the dense tufts of hair on the ventral

surface of the abdomen, and by the penultimate ventral segment being deeply incised

at the apex. Clypeus almost transverse at the apex; the hinder ocelli separated from

each other by a less distance than they are from the eyes; front with an indistinct

furrow. Prothorax as long as the head; the apex angulated. Median segment with

a not very distinct furrow at the base. Abdomen as long as the head and thorax

united ; the apex above and beneath with long hairs.

J 97. Pompilus interstitialis. (Tab. XI. fig. 15, wing.)

Long. 12 millim.

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

Head subopaque, indistinctly punctured, bearing long black hairs, behind trans-

verse; the eyes a little converging beneath; the hinder ocelli separated from each

other by a less distance than they are from the eyes; clypeus projecting, the apex

broadly rounded, the apical portion finely punctured. Pronotum broader than long,

angulated at the apex. Median segment with a gradually rounded slope to the apex,

and bearing longish black hairs. Abdomen subsessile, shining; the pygidium and

ventral surface bearing long black hairs. Legs long, of moderate stoutness; the long

spur of the hind tibiee reaching beyond the middle of the metatarsus ; the tibiee beneath

moderately spinose. For neuration, see Tab. XI. fig. 10.

2 cc 2

196 HYMENOPTERA.

\ 28. Pompilus imperialis. (Tab. XI. figg. 16, head; 16 a, wing.)

Pompilus imperialis, Smith, Descr. of New Species of Hymen. p. 155 (1879)’.

Hab. Mexico, Xucumanatlan in Guerrero 7000 feet (H. H. Smith); Costa Rica,

Caché ! (Rogers).

In this species the clypeus is broadly rounded ; the eyes converge slightly at the top ;

and the ocelli are in a triangle, the hinder ones separated from each other by a slightly

less distance than they are from the eyes. Head broader than the thorax, transverse

behind; the prothorax as long as the head, a little narrowed in front, and having a

distinctly rounded slope from the apex to the head, the apex slightly arcuate. Median

segment with a gradually rounded slope to the apex, which is oblique; it has no furrow.

Abdomen a little longer than the head and thorax united, not much compressed. The

antenne are short and thick; the scape covered with long hairs; the flagellum with a

microscopic pile; the joints a little dilated beneath. The head and thorax bear a

longish black pile. The tibize bear a few longish spines; the spurs of the hind pair

are thick, and do not reach the middle of the metatarsus. The Mexican example is

barely 9 millim in length.

{ 29. Pompilus championi. (Tab. XI. figg. 17, head; 17a, wing.)

Long. 13 millim.

Hab. GUATEMALA, near the city (Champion).

Of similar form, size, and colour (blue, with purple reflections) to P. imperialis ; but

it wants the velvety pubescence, the body being quite glabrous and shining. Eyes

converging beneath; the ocelli hardly forming a triangle, the hinder ones separated

from each other by about the same distance they are from the eyes; clypeus broadly

rounded ; the cheeks covered with long white pubescence. Head transverse or nearly

so behind. Antenne shorter than the thorax, tapering towards the apex, the joints a

little dilated beneath ; the third joint distinctly shorter than the fourth. Prothorax as

long as the head, having a gradually rounded slope to the base; the base with a dense

tuft of hair; the apex angulated. Median segment smooth, with a gradual slope to

the apex, and without a furrow. Abdomen longer than the head and thorax united,

smooth and shining. Legs of moderate stoutness; the tibiae with short, thickish

spines; the long spur of the hind tibia reaching beyond the middle of the metatarsus ;

claws simple, but thickened into a blunt tooth-like process at the base. For neuration,

see Tab. XI. fig. 17a: as will be seen from the figure, the transverse basal nervure is

not interstitial.

The spurs are longer and thinner than they are in P. imperialis, and want the

brush. P. championi differs also from that species in the apex of the prothorax being

angulated.

POMPILUS. 197

30. Pompilus omiltemensis. (Tab. XI. figg. 18, head; 18 a, wing.)

‘Long. 9 millim.

Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith); Panama, Volcan de

Chiriqui 4000 to 6000 feet (Champion).

Black, the whole body sparsely covered with long black hair; the median segment

pruinose. Eyes curved; the ocelli large, in a triangle, the hinder ones separated

from the eyes by a distinctly greater distance than they are from each other; clypeus

projecting, broadly rounded, the middle part faintly incurved ; frontal furrow distinct,

especially over the antenne. Antenne slender, bearing a microscopic pile; the third

joint distinctly longer than the fourth. Prothorax shorter than the head ; the apex

bluntly angulated. Median segment indistinctly furrowed down the centre and with

a gradually rounded slope. Abdomen a little shorter than the head and thorax united,

subsessile ; the apex above and beneath with long hairs. Legs long, moderately slender ;

the tibial spines longish ; the long spur of the hind tibie reaching a little beyond

the middle of the metatarsus ; claws with a sharp basal tooth.

The male has the head and thorax covered with long hair, as in the female; the

apex of the clypeus incised in the centre; the antenne longer than the head and

thorax united, and densely covered with pile, their third and fourth joints subequal ;

the abdomen as long as the head and thorax united, and with a violet bloom; the last

ventral segment raised and shining in the centre, this raised part being bordered by a

deep furrow on either side.

J 31. Pompilus philadelphicus. (Tab. XI. figg. 19, head; 19 @, wing.) |

Pompilus philadelphicus, Lep. de St.-Fargeau, Hist. Nat. des Ins. Hymén. in. p. 423 *; Cresson,

Trans. Am. Ent. Soc. i. p. 87”.

Pompilus nebulosus, Smith, Cat. Hymen. Ins. iii. p. 160 (nec Dahlbom) *.

Hab. Norra America ! 3, Delaware 2, Connecticut 2, Louisiana ?.—Mexico, Northern

Sonora (Morrison), Presidio de Mazatlan (Forrer), Amula, Acapulco, and Xucumanatlan

in Guerrero (H. H. Smith), Valladolid in Yucatan (Gaumer); Guaremaua, Senahu,

Purula, San Gerénimo in Vera Paz (Champion) ; Panama, Volcan de Chiriqui 2000 to

3000 feet (Champion).

Numerous specimens of a Pompilus from the above-quoted Central-American localities

probably belong to this species. In the British Museum there is also an example of

+t under this name from Mexico. The species varies in the colour of the body as regards

having blue, greenish, or purplish reflections, and it likewise varies in size.

I give a fresh description from the specimens before me :—

Head alutaceous, sparsely haired, behind concave; the eyes slightly converging

beneath ; the hinder ocelli separated from the eyes by about the same distance that

they are from each other ; a furrow runs down to the antenne; the clypeus is opaque,

198 HYMENOPTERA.

alutaceous, the apex rounded broadly. Antenne stout; the third joint very distinctly

longer than the fourth. Pronotum broader than long, with a distinct neck at the

head; behind arcuate. Median segment pruinose, with a gradual slope to the apex,

indistinctly furrowed in the middle. Abdomen subsessile, not longer than the head

and thorax together; the pygidium and ventral surface with long black hairs. Legs

long, stout, the tibial spines moderate; the long spur of the hind tibize not reaching

to the middle of the metatarsus; the tarsi beneath thickly spinose. For neuration,

see Tab. XI. fig. 19 a.

N 32. Pompilus unicolor.

Pompilus unicolor, Smith, Descr. of New Species of Hymen. p. 154 (1879) °.

Hab. Guatemata, Guatemala city 5000 feet (Salvin 1)—Ecuapor, Guayaquil !.

Appears to be very closely related to P. philadelphicus.

J 33. Pompilus acapulcoensis.

Long. 10 millim.

Hab. Mexico, Acapulco in Guerrero (H. H. Smith).

Also related to P. imperialis, but though the body is velvety it is of a very dull

blue; and differs from it further in having the antenne longer, with the third and fourth

joints subequal. Eyes converging beneath; the ocelli almost in a triangle, the hinder

ones separated from each other by a much less distance than they are from the eyes;

clypeus rounded at the apex, bluntly so in the middle. Antenne longer than the

thorax, slightly tapering towards the apex, the joints closely united, covered with a

dense pile; the third and fourth joints subequal. Head rather densely covered with

long blackish hairs, the cheeks more densely clothed with silvery hairs. Prothorax

hardly so long as the head, arcuate at the apex. Median segment without a furrow.

Abdomen as long as the head and thorax united. Legs stoutish ; the tibial spines

long; the long spur of the hind tibiz reaching nearly to the apex of the metatarsus;

claws apparently simple. The third cubital cellule triangular; the second recurrent

nervure interstitial.

Apart from the difference in the neuration, P. acapulcoensis may be known from

P. championi by the much longer hind tibial spurs (these in the latter not reaching

much beyond the middle of the metatarsus), by the body being velvety, and by the

antenne being longer than the thorax.

i} 34. Pompilus leona. (Tab. XI. fig. 20, wing.)

Long. 9 milm. <6.

Hab. Mexico, Xucumanatlan in Guerrero 7000 feet (H. H. Sinith).

Dark blue, faintly whitish-pruinose ; the head and thorax with a few longish hairs.

POMPILUS. | i199

Eyes converging a little above ; the hinder ocelli separated from each other by nearly

the same distance they are from the eyes; clypeus short, broadly rounded. Prothorax

a little shorter than the head; the apex arcuate. Median segment with a gradually

rounded slope; the sides projecting as blunt teeth. Abdomen shorter than the head

and thorax together ; the apical segment above thickly covered with long thick bristle-

like hairs; the penultimate segment broadly incised. Legs stout; the tibial spines

short ; the long spur of the hind tibie reaching a little beyond the middle of the

metatarsus. Second cubital cellule triangular, almost appendiculate. For neuration,

see Tab. XI. fig. 20.

35. Pompilus brevicornis.

Pompilus brevicornis, Taschenherg, Zeitschr. ges. Naturw. xxxiv. p. 50 (1869) °.

Hab. Norta America, Illinois !.—Mexico }.

vA 36. Pompilus anceps.

Pompilus anceps, Smith, Trans. Ent. Soc. Lond. 3rd ser. i. p. 36°; Cresson, Trans. Am. Ent. Soe.

i. p. 95”.

Hab. Panama ? (Stretch *).

This species has the six apical joints of the antenne orange-yellow.

V 37, Pompilus zthiops.

Pompilus ethiops, Cresson, Proc. Ent. Soc. Phil. iv. p. 451°; Trans. Am. Ent. Soc. i. p. 87°;

Proc. Bost. Soc. Nat. Hist. xii. p. 367 *.

Hab. Norta America, Colorado}, United States? 3. — Mexico, Orizaba (Sumi-

chrast ?).

This species differs from any of the species I have described in having the anterior

_ margin of the clypeus “very deeply emarginate in the middle and the sides broadly

rounded.”

VV 38. Pompilus lepidus.

Pompilus lepidus, Say, Bost. Journ. Nat. Hist. i. p. 303 (1835) *; Complete Writings, ii. p. 745° ;

Cresson, Trans. Am. Ent. Soc. i. p. 94°; Proc. Bost. Soc. Nat. Hist. xu. p. 367 *,

Hab. Mexico ! 2 3, Orizaba (Sumichrast*).

The male is said to have the fore claws cleft.

\/ 39. Pompilus fulgidus.

Pompilus fulgidus, Cresson, Proc. Ent. Soc. Phil. iv. p. 181"; Trans. Am. Ent. Soc. i. p. 947;

Proc. Bost. Soc. Nat. Hist. xi. p. 367 °.

Hab. Mexico, Orizaba (Sumichrast *).— ANTILLES, Cuba 1”.

200 HYMENOPTERA.

J 40. Pompilus simulans.

Pompilus simulans, Cresson, Proc. Bost. Soc. Nat. Hist. xii. p. 367°.

Hab. Mexico, Orizaba (Swmichrast *).

J 41. Pompilus regalis.

Pompilus regalis, Smith, Journ. Ent. i. p. 396"; Cresson, Trans. Am. Ent. Soc. i. p. 94°.

Hab. Mexico? 2.

Species 42-46 have black bodies, very richly ornamented with a brilliant silvery

pubescence ; the wings violaceous, or yellowish, or hyaline banded with fuscous. In

two of the species known to me (P. gloriosus and P. verepacis) neither the basal nor

the anal nervure is interstitial; the claws are almost bifid: the legs very long, with

the long spur of the hind tibie short compared to the length of the metatarsus.

/ The basal and anal nervures not interstitial. (Species 42, 43.)

J 42. Pompilus verepacis. (Tab. XI. figg. 21, head; 21 a, wing.)

Niger, lete argenteo-pilosus ; alis violaceis.

Long. 18 millim. ¢ et Q.

Hab. Guatremata, Cubilguitz in Vera Paz (Champion); Panama, Volcan de Chiriqui

2500 to 4000 feet (Champion).

Deep black, bearing a brilliant silvery pile, especially thick on the face, pleure, and

median segment, and on the third and fourth abdominal segments. Antenne stout,

conyolute, longer than the head and thorax united; eyes very slightly converging at

the top; the hinder ocelli separated from the eyes by hardly half the distance they are

from each other; clypeus with the sides oblique, the apex projecting, slightly incurved.

Prothorax shorter than the head, the apex bluntly rounded ; in front of the tegule at .

the top there is a hollow. Scutellum raised, a little narrowed towards the apex.

Median segment with a gradually rounded slope to the apex, without a central line, and

covered with long soft pale hair. The sternum before the middle coxe projects into a

blunt tooth. Abdomen as long as the head and thorax united, subsessile ; the pygi-

dium rough and covered with stiff dull rufous pile and with some long black hairs;

the four apical ventral segments bear long black hairs. Legs long; all the claws

sub-bifid ; the fore tarsi without spines, only shortly ciliated beneath ; the tibial spines

very short; the long spur of the hind tibiee about one-fourth the length of the meta-

tarsus. The third cubital cellule much longer than the second; the basal nervure not

interstitial; the anal nervure in hind wings interstitial.

The male is similarly coloured to the female. It has the antenne straight, mode-

rately thick, tapering towards the apex, the apical joints curved and a little dilated,

POMPILUS. 201

the third joint longer than the fourth; the apex of the apical ventral segment with a

smooth, shining, triangular depression. |

V'43, Pompilus gloriosus.

Pompilus gloriosus, Cresson, Proc. Bost. Soc. Nat. Hist. xii. p. 368 (1869) *.

Hab. Mexico, Orizaba (Sumichrast 1); Guatemaua, Chiacam in Vera Paz (Champion) ;

Panama, Bugaba 800 to 1500 feet (Champion).

The male has the antenne as long as the head, thorax, and half of the abdomen

united, slender, curled at the tip, the third joint longer than the fourth; the eyes

converging a little at the top; the hinder ocelli separated from the eyes by a greater

distance than they are from each other; the clypeus rounded at the apex; the front,

and also the hinder, claws bifid; the long spur of the hind tibie not reaching the

middle of the metatarsus ; the apex of the abdomen with some long black hairs.

The basal and anal nervures interstitial. (Species 44—46.)

Vv,

44, Pompilus confusaneus.

Pompilus confusaneus, Cresson, Proc. Bost. Soc. Nat. Hist. xu. p. 369 (1869) °.

Hab. Mexico, Orizaba (Sumichrast ').

v 45. Pompilus connexus.

Pompilus connexus, Cresson, Proc. Bost. Soc. Nat. Hist. xii. p. 369 (1869) °.

Hab. Mexico, Orizaba (Sumichrast 1).

J 46. Pompilus chiriquensis. (Tab. XI. fig. 22, wing.)

Niger, lete argenteo-pilosus ; alis flavis, fusco-bifasciatis. ?.

Long. 29 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Head opaque, finely rugose, sparsely covered with an obscure rufous pubescence,

slightly convex behind ; eyes parallel ; the ocelli closely set together, hardly forming a

triangle, the hinder ones separated from each other by a less distance than they are

from the eyes; vertex with an indistinct furrow; clypeus rounded and rufous at the

apex, finely, rugosely punctured. Antenne short, about as long as the head and

thorax united. Thorax opaque, alutaceous, the pronotum and mesonotum with an

obscure rufous pubescence ; there is a thick patch of golden pubescence on either side

- of the scutellum, and there is a broad band of similar pubescence down the median

segment ; the pleure have silvery pubescence. Pronotum sborter than the head, the

sides rounded; a furrow down the middle, the apex concave, but rather sharply pointed

in the centre. Scutellum concave, not much narrowed towards the apex. Median

BIOL. CENTR.-AMER., Hymenopt., Vol. IL., September 1893. 2 DD |

202 HYMENOPTERA.

segment transversely furrowed, more strongly so towards the middle, the apex oblique.

Abdomen longer than the head and thorax united, with patches of silvery pubescence

along the sides and on the pygidium. Legs stout, longish, pruinose ; the coxe thickly

covered with silky pubescence ; the tibie thickly spined; the long spur of the hind

tibie not half the length of the metatarsus. The basal nervure is almost interstitial ;

the anal nervure in hind wings is received in front of the cubital nervure.

Species 47 and 48 have deep black bodies and more or less reddish legs.

“NJ

47. Pompilus admirationis.

Niger, coxis femoribusque posterioribus rufis; alis fusco-violaceis. 9.

Long. 17 millim.

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

Head opaque, alutaceous, transverse behind; the eyes slightly diverging beneath ;

the ocelli in a triangle, the hinder ones separated from each other by a somewhat less

distance than they are from the eyes; vertex with a narrow furrow; clypeus rounded

at the sides, the apex almost transverse. Thorax opaque, alutaceous; the pronotum

shorter than the head, bluntly angled. Scutellum concave, not narrowed towards the

apex. Median segment with a gradual slope to the apex from the base, the basal half

furrowed down the middle. Abdomen a little longer than the head and thorax united ;

smoother and more shining than the thorax; the apex bearing stiff black and rufous

hairs; the pygidium rough. Legs very long; the tibial spines short, thick ; the long

spur of the hinder tibiz one-third the length of the metatarsus; the claws sub-bifid;

the fore tarsi without comb-spines. Wings longer than the body; the radial cellule

long and narrow, acute at the base and apex; the second and third cubital cellules at

top subequal; the first transverse cubital nervure is curved, the second straight, the

third bluntly elbowed below; the first recurrent nervure is received near the apex of

the cellule, the second near the apical fourth; the basal nervure is interstitial; the

anal nervure in hind wings is received in front of the cubital nervure.

[

}

J 48. Pompilus exactus. (Tab. XI. figg. 28, head; 23 a, wing.)

Niger, linea pronoti flava, pedibus rufis ; alis hyalinis, apice fumatis.

Long. 10-12 millim.

Hab. Muxico, Presidio de Mazatlan (Lorrer), Temax in North Yucatan (Gaumer).

Antenne short, covered with a microscopic down, the third joint distinctly longer

than the fourth. Face elongate; the eyes converging above; the hinder ocelli

separated from each other by about the same distance they are from the eyes ; the

apex of the clypeus almost transverse; the labrum projecting. Prothorax about as

long as the head; the apex rounded. The median segment gradually rounded to the

POMPILUS. 203

apex. Abdomen longer than the head and thorax united, sessile, the apex sharply

pointed and bearing a few longish hairs. Legs of moderate length; the fore tarsi

with long comb-spines, and ciliated beneath, the base incised ; the tibial spines short ;

the long spur of the hind tibie reaching beyond the middle of the metatarsus; the claws

with a basal tooth. The third cubital cellule is shorter above and beneath than the

second and is narrowed at the top, through the cubital nervure being elbowed.

In the male the base of the femora is more or less black; the antenne are about as

long as the head and thorax united, thick, the flagellum fuscous beneath, the third

joint shorter than the fourth; the abdomen is shorter than the head and thorax

united, and has a white band on the apex of the third segment.

From Presidio de Mazatlan there is a small form (6 millim., ¢ ) with the inner and

outer orbits pale yellow, and the four anterior legs and the hinder tarsi entirely black.

There is a difference, too, in the shape of the third cubital cellule, which is more

narrowed at the top; the third transverse cubital nervure being straight and not

elbowed.

Species 49-53 have black bodies, with the abdomen entirely red, or red in the

middle.

J e e ° .

49. Pompilus neotropicalis.

Niger, abdomine, femoribus tibiisque posticis rufis; alis fuliginosis. 9.

Long. 14 millim. :

Hab. Guaremata, San Gerénimo (Champion).

Head almost opaque, alutaceous, from a little below the ocelli covered closely with

a whitish-silvery pubescence, the vertex bearing long, sparse, blackish hairs; eyes

distinctly converging and curved at the top; the ocelli in a curve, the hinder ones

separated from each other by a somewhat greater distance than they are from the eyes;

the sides of the clypeus rounded, the apex slightly incurved in the middle ; a straight

furrow leads down to the antenne. Antenne shorter than the body, pruinose: the

third joint distinctly longer than the fourth. Pronotum subquadrate, gradually

narrowed from the base to the apex, behind arcuate. ‘Thorax opaque, alutaceous,

pruinose ; the scutellum concave, narrower and rounded towards the apex ; the median

segment rounded, thickly covered with a whitish pubescence intermixed with long

white hairs. Abdomen as long as the head and thorax united, petiolate, pruinose ;

the pygidium shining, impunctate, bare. Legs elongate; the cox with a whitish-silvery

pubescence; the spines sparse, long; the long spur of the hind tibiz reaching beyond

the middle of the metatarsus ; the fore tarsi with thin comb-spines. At the top the

second and third cubital cellules are subequal, at the bottom the second is longer than

the third; the first transverse cubital nervure is received in the apical fourth, the

second in the middle of the cellule.

2 DD 2

904 HYMENOPTERA.

{ 50. Pompilus boucardi, (Tab. XI. figg. 24, head; 24 a, wing.)

Niger, linea pronoti, basi tibiarum et tarsorum posticis late flavo-albis, abdomine rufo ; alis subhyalinis, apice

fumatis.

Long. 12 millim.

Hab. Panama (Boucard).

The head and thorax densely covered with a silvery pile. ‘The antenne stout; the

flagellum dull red; the third joint slightly longer than the fourth. The eyes

converging beneath ; the ocelli not in a triangle, the hinder ones separated from each

other by a somewhat greater distance than they are from the eyes; the clypeus with

the apex rounded and dull rufous. Prothorax longer than the head; the apex

rounded. Scutellum narrowed towards the apex. The median segment gradually

rounded. Abdomen as long as the head and thorax united, pruinose. Legs of

moderate length ; the spines few and short; the base of the fore tarsi curved; the

long spur of the hind tibize hardly reaching to the middle of the metatarsus; the basal

three-fourths of the hind tibie and the tarsal joints (except at the apex) are pale

reddish-white. Wings subhyaline, the apex smoky. ‘The basal nervure in the fore

wings and the anal nervure in the hind wings are interstitial; the second cubital

cellule is longer than the third; the second and third transverse cubital nervures

almost unite at the top, the third becoming elbowed near the top. |

Allied to P. neotropicalis; but it has the head and thorax much more densely

pilose, the tibial spines less numerous, and the base of the fore metatarsus incised.

The coloration of the legs is also different, as well as the form of the cubital cellules.

1 51. Pompilus coruscus. |

Pompilus coruscus, Smith, Cat. Hymen. Ins. iu. p. 156 (1855) '; Cresson, Proc. Ent. Soc. Phil. iv.

p- 128?; Trans. Am. Ent. Soc. i. p. 103°; Proc. Bost. Soc. Nat. Hist. xii. p. 370%.

Pompilus juxtus, Cresson, Proc. Ent. Soc. Phil. iv. p. 128°.

Pompilus coruscus, var. jucta, Cresson, Trans. Am. Ent. Soc. 1. p. 103°.

Pompilus coruscus, var. insignis, Cresson, loc. cit.”

Hab. Mexico, Ventanas in Durango 2000 feet (Forrer), Orizaba (Sumichrast +),

Atoyac in Vera Oruz (H. H. Smith); Guaremaua, near the city (Champion) ; PANAMA,

Bugaba (Champion).—ANTILLES, Cuba? ?°°7, San Domingo 1.

This species varies considerably in size. The eyes distinctly converge at the top;

the hinder ocelli are separated from each other by a greater distance than they are

from the eyes. The clypeus is short, broadly rounded at the apex; there is a furrow

down the front. The prothorax is as long as the head and is bluntly angled at the

apex ; there is a small hollow in front of the tegule at the sides, and the base is

raised. The median segment is broadly rounded to the apex. The abdomen is as

long as the head and thorax united; the pygidium is rough and bears long black

POMPILUS. 205

hairs. The basal nervure is interstitial, the anal nervure in the hind wings hardly so,

being received just in front of the cubital. Legs shortish, stout; the fore tarsi only

ciliated beneath ; the tibial spines longish ; the long spur of the hind tibie reaches to

the middle of the metatarsus.

_ The amount of black on the abdomen varies and the wings vary also in tint, some

examples having the wings quite light at the base. The shape of the third cubital

cellule varies: it may be petiolate, subpetiolate, or triangular.

v 52. Pompilus apiculatus. (Tab. XI. fig. 25, wing.)

Pompitlus apiculatus, Smith, Cat. Hymen. Ins. ii. p. 157'; Cresson, Trans. Am. Ent. Soc. i.

p. 103°.

Pompilus coruscus, Smith, Descr. of New Species of Hymen. p. 155 (1879) *.

Hab. Mexico, Presidio de Mazatlan (Forrer), Vera Cruz1; Guatemata, San Geré-

nimo (Champion), Chinautla 4100 feet (Salvin),

Head semiopaque, covered with a whitish pubescence, alutaceous; eyes curved and

converging at the top, at the bottom almost parallel; the ocelli in a triangle, the

hinder ones separated from each other by about the same distance they are from the

eyes; clypeus short, broad, the sides rounded, the apex almost transverse. Antenne

as long as the thorax, the third joint distinctly longer than the fourth. Thorax

opaque ; a line along the apex of the pronotum and the sides of the median segment

densely covered with a silky pubescence. Pronotum subquadrate, not much narrowed

towards the head. Scutellum concave, not narrowed towards the apex, longer than

broad. ‘The median segment depressed in the centre, the depression with a furrow in

the middle. Abdomen shorter than the head and thorax, shining, slightly pruinose ;

the pygidium semiopaque, shagreened towards the apex. Legs stout, of moderate

length, densely pruinose, the anterior pair having a plumbeous tinge; the spurs short,

thick; the long spur of the hinder tibize reaching beyond the middle of the metatarsus.

Wings short; the second cubital cellule longer than the third; the first transverse

cubital cellule elbowed in the middle, the second straight, the third curving round so

as to join the second; the first recurrent nervure is received in the apical third, the

second beyond the middle of the cellule. The apex of the abdomen may be blackish.

Smith ? described this species as P. coruscus, though he had long previously used

the same name for another species of Pompilus.

v 53. Pompilus subargenteus. (Tab. XI. figg. 26, head; 26a, wing.)

Pompilus subargenteus, Cresson, Proc. Ent. Soc. Phil. iv. p. 129°; Trans. Am. Ent. Soc. i. p. 103°.

Hab. Mexico, Atoyac in Vera Cruz (H. H. Smith).—ANTILLES, Cuba ! 2.

The Atoyac example (a male, 6 millim. in length) is, no doubt, referable to P. sub-

argenteus. It has the eyes converging beneath; the hinder ocelli separated from each

206 HYMENOPTERA.

other by about the same distance they are from the eyes; the apex of the clypeus

truncate; the front bearing a distinct furrow; the apex of the pronotum sharply

angled; the median segment gradually rounded to the apex ; the apex of the penulti-

mate ventral segment roundly incised ; the base of the fore tarsi sharply incised and

ciliated only; and the long spur of the hind tibie reaching quite close to the apex of

the metatarsus.

Cresson describes ! the wings as fuscous, darker at the tips. The Mexican example

has them hyaline, with the tips smoky.

Here follow four slenderly built species, with black bodies variegated with white,

the legs also having more or less white on them; the wings hyaline, smoky at the

apex. (Species 54-57.)

J 54. Pompilus guatemalensis.

Niger, argenteo-pilosus, linea pronoti pedibusque posterioribus albo-annulatis, abdominis segmento 2° late

rufo; alis hyalinis, apice late fumatis. <.

Long. fere 12 millim.

Hab. Guatemaa, San Geronimo (Champion).

Antenne moderately stout, at the base closely united, the third and fourth joints

subequal ; eyes slightly converging at the top; the hinder ocelli separated from each

other by a greater distance than they are from the eyes; the sides of the clypeus

oblique, the apex almost transverse ; there is a furrow on the front above the antenne ;

the vertex bears some black hairs; from the ocelli the face and clypeus are covered

with pale golden pubescence. Prothorax as long as the head, the apex angled.

Scutellum narrowed towards the apex, which is rounded. Median segment with a

rather gradually rounded slope to the apex, where there is a bright yellow elongate

mark on either side. Abdomen longer than the head and thorax united, narrowed at

the base, somewhat compressed; the apical ventral segments sparsely covered with

longish black hairs ; the penultimate ventral segment roundly incised. Legs longish,

densely sericeous ; the spurs, the bases of the middle tibie, the greater part of the hind

tibie behind, and all the tarsal joints broadly at the base, white; the fore metatarsus

incised at the base; the tibial spines numerous and minute; the long spur of the hind

tibie reaching a little beyond the middle of the metatarsus. Wings subhyaline, with

the apex smoky; the basal nervure interstitial; the anal nervure in the hind wings

received beyond the cubital nervure; the second and third cubital cellules subequal.

Y 55, Pompilus dubitatus.

Niger, flavo-maculatus, orbitis oculorum flavis, antennis subtus brunneis, geniculis, tibiis tarsisque anterioribus

testaceis ; alis hyalinis, apice fumatis. <.

Long. 8 millim,

POMPILUS. | 207

Hab. Mexico, Chilpancingo in Guerrero 4600 feet, Atoyac in Vera Cruz (H. H.

Smith).

Antenne longish, stout, tapering towards the apex, the third and fourth joints

subequal ; all the joints dull rufous beneath (perhaps yellow, discoloured by cyanide

of potassium). Eyes very slightly converging beneath ; the hinder ocelli separated

from each other by about the same distance they are from the eyes; the apex of the

clypeus rounded ; the inner orbits of the eyes and the sides.of the clypeus broadly

lemon-yellow ; the cheeks and clypeus with silvery pubescence. Prothorax about as

long as the head ; the apex bluntly angled and broadly lemon-yellow. Scutellum not

narrowed towards the apex, with a transverse mark at its base, and also one on either

side, yellow; the postscutellum is also yellow, as well as the apex of the median

segment broadly. Median segment with a gradual slope to the apex. On the pleure

there is an irregular mark below the tegule, a smaller one below the hind wings,

and a large one over the middle coxe, yellow. Abdomen shorter than the head

and thorax united, subsessile; the apical segment transverse, densely covered with

silvery pubescence; the apex of the last ventral segment incurved; the base and

apex of the basal segment, and the apices of the others, fulvous-yellow (perhaps lemon-

yellow ?). Legs longish, slender; the claws bifid; the long spur of the hind tibize

reaching beyond the middle of the metatarsus; the hind coxe behind, the apex of the

fore femora, the four hinder femora beneath, the fore tibie entirely and the others at

the base (the hinder pair very narrowly), the fore tarsi entirely, the base of the middle

tarsi, and the spurs, yellow or fulvous. The basal nervure is interstitial; the anal

nervure in the hind wings is received beyond the cubital nervure; the third cubital

cellule is shorter than the second at the top and bottom, the third at the top about

half the length it is at the bottom.

56. Pompilus torole.

Niger, linea pronoti, maculis duabus abdominis, basi tibiarum posticarum calcaribusque albis; alis fusco-

fasciatis. ¢.

Long. 7 millim.

Hab. Guatemata, Torola 1000 feet (Champion).

Antenne moderately stout, covered with a microscopic down, not tapering towards

the apex, the apical joints dilated, the third joint distinctly longer than the fourth.

Head, especially from below the ocelli, densely covered with a silvery pubescence; the

eyes distinctly converging beneath ; the ocelli in a triangle, the hinder ones separated

from each other by a much less distance than they are from the eyes; the apex of the

clypeus distinctly transverse. Prothorax shorter than the head; the apex angled

rather acutely. The thorax, especially the pleure and the median segment, densely

covered with silvery pubescence ; the median segment with a very gradually rounded

208 HYMENOPTERA.

slope and as long as the mesothorax. Abdomen subsessile, as long as the thorax;

the apex acute, covered with long silvery hair. Legs very long and slender, densely

covered with silvery pubescence; the front metatarsus incised at the base; the tibial

spines few; the long spur of the hind tibie reaching to the middle of the metatarsus.

Wings long; hyaline, with a cloud across the radial and the second and third cubital

cellules; the basal nervure not interstitial ; the second cubital cellule at the top and

bottom shorter than the third and narrowed towards the top; the first recurrent

nervure received beyond the middle, the second curved and received shortly before

the middle; in the hind wings the anal nervure is received in front of the cubital

nervure.

. 57. Pompilus temaxensis.

Niger, linea pronoti calcaribusque albis ; alis hyalinis, apice fumatis. 9.

Long. 6 millim.

Hab. Mexico, Temax in North Yucatan (Gaumer).

Antenne thick, the apical joints slightly dilated; the third and fourth joints sub-

equal; the flagellum fuscous beneath. Eyes distinctly converging beneath ; the hinder

ocelli separated from the eyes by, if anything, a less distance than they are from each

other; the face with a sparse whitish pubescence, shining, and with a bluish tinge ;

the inner orbits yellow. Prothorax as long as the head; the apex arcuate. Scutellum

raised, hardly narrowed towards the apex. The median segment with a gradually

rounded slope. Abdomen as long as the thorax; the apex with a silvery pile; the

penultimate ventral segment not incised. Legs moderately long; the front claws

bifid ; the fore metatarsus curved at the base; the spines and spurs white; the hinder

spurs thick, the longer one reaching beyond the middle of the metatarsus. The third

cubital cellule is shorter at the top and bottom than the second, and at the top is half

the length it is at the bottom; the anal nervure in the hind wings is interstitial.

Easily known from P. torole by the legs having the spines and spurs only white, by

there being only one white band on the abdomen, by the third cubital cellule being

shorter than the second, and by the interstitial anal nervure in the hind wings.

Species with the bodies yellowish or reddish. (Species 58-65.)

58. Pompilus interruptus.

Ceropales interrupta, Say, Bost. Journ. Nat. Hist. 1. p. 865'; Complete Writings, ii. p. 750°.

Pompilus interruptus, Cresson, Trans. Am. Ent. Soc. i. p. 104°; Proc. Bost. Soc. Nat. Hist. xii.

p. 370%.

Hab. Nortu America, United States *, Indiana 1.—Mexico, Orizaba (Sumichrast *).

‘This must be a close ally of P. balteolus, but it is, I believe, distinct: ¢. g. the apex

POMPILUS. 209

of the clypeus in P. interruptus is described as “ truncated,” while in P. balteolus it is

rounded, with a slight but distinct incurvation ; P. interruptus, moreover, is stated to

have the third cubital cellule “ subtriangular ” and “ large.”

59. Pompilus balteolus.

Rufo-fulvus, flavo-maculatus ; pleuris nigris, flavo-maculatis ; pedibus flavis, coxis, femoribus apiceque tibiarum

posticarum nigris; alis fumatis.

Long. 12-18 millim.

Hab. Muxtco, Chilpancingo in Guerrero 4600 feet (H. H. Smith), North Yucatan

(Gaumer).

Brownish-fulvous; the orbits of the eyes, a spot on either side of the base of the

pronotum, the apex of the pronotum broadly, a broad line on either side of the

scutellum, a thin line at its apex, the postscutellum, and the apical half of the median

segment, bright yellow ; the pleure, scutellum, and base of the median segment black ;

there is a yellow mark below the tegule anda larger one below this; there are two

yellow marks on the base of the abdomen and the abdominal segments are yellow at

the apex; the coxe, trochanters, and femora (except at the extreme apex) are black;

the apical third of the hind tibie is black; the apices of the tarsal joints are fuscous ;

the rest of the legs fulvous, mixed with yellow ; the antenne are fulvous, with the six

apical joints black. yes distinctly converging at the top ; the hinder ocelli separated

from each other by a less distance than they are from the eyes; the clypeus short and

broad, the sides rounded, the apex slightly incurved ; the clypeus and cheeks with a pale

pubescence. Prothorax as long as the head, the apex angled bluntly, the sides flat ;

there is an impressed line down the centre of the pronotum. Scutellum short and

broad, not narrowed towards the apex. Median segment with a gradually rounded

slope to the apex, which is margined, the margin projecting at the sides. Abdomen

subsessile, hardly longer than the head and thorax united; the pygidium black and

rough, and with some black hairs; the ventral surface may be black entirely or have

bright yellow marks. Legs longish, stout, bearing a pale pubescence ; anterior tarsi

with long spines, beneath ciliated; the tibial spines and the spines on the hind tarsi

longish; the long spur of the hind tibie about two-thirds of the length of the meta-

tarsus; the hinder tarsi spinose beneath; all the claws with a basal tooth. Wings

smoky-fuscous; the basal nervure interstitial; the third cubital cellule above and

beneath shorter than the second, above much narrowed, the cubital nervures running

almost parallel; in the hind wings the anal nervure is received beyond the cubital

nervure.

In structure, it is difficult to find any characters to distinguish this insect from

P. flavopictus; but as the coloration is quite uniform in the specimens from the

localities cited, P. balteolus is doubtless a good and distinct species.

BIOL. CENTR.-AMER., Hymenopt., Vol. II., September 1893. 2 EE

210. HYMENOPTERA.

J 60. Pompilus flavopictus. (Tab. XI. figg. 27, head; 27 a, wing.)

Pompilus flavopictus, Smith, Journ. Ent. i. p. 396*; Descr. of New Species of Hymen. p. 156

(1879) ?; Cresson, Trans. Am. Ent. Soc. i. p. 97°; Proc. Bost. Soc. Nat, Hist. xii. p. 370%.

Hab. Mexico} 3, Orizaba (Sumichrast +), Xucumanatlan in Guerrero 7000 feet,

Teapa in Tabasco (H. H. Smith), North Yucatan (Gaumer); GUATEMALA, Las Mercedes

3000 feet, Panima in Vera Paz (Champion) ; Nicaragua, Chontales (Belt) ; Costa Rica,

Caché ? (Rogers); Panama, Bugaba, Volcan de Chiriqui (Champion).

A common and, as regards the amount of black on the body, antenne, and legs,

variable species. The eyes distinctly converge at the top; the hinder ocelli are

separated from each other by about the same distance they are from the eyes; the

clypeus is very slightly incurved at the apex, the sides rounded. The prothorax is as

long as the head, the apex rounded; the median segment with a gradually rounded

slope to the apex. The abdomen is a little longer than the head and thorax united ;

the apex with some long hairs. The legs are longish; the spines long, slender,

and numerous; the long spur of the hind tibie reaching beyond the middle of the

metatarsus. The anal nervure in the hind wings is received beyond the cubital

nervure ; in the fore wings the basal nervure is interstitial.

The male has the apex of the clypeus transverse and the sides obliquely truncate.

Smith ? describes this species as new under the same name he used previously }, his

original type being from Mexico.

\ 61. Pompilus pygidialis.

Pompilus pygidialis, Kohl, Verh. zool.-bot. Ges. Wien, xxxvi. p. 334".

Hab. Mexico, Cuernavaca (Bilimek!); Panama, Bugaba (Champion). — Sours

America, Buenos Ayres !; ANTILLES, Cuba 1.

This species is remarkable for having the fore claws bifid, while the four others are

only toothed. The eyes at the top, too, approach nearer than in any of the other

species of the genus.

\, 62. Pompilus virulentus.

Pompilus virulentus, Smith, Descr. of New Species of Hymen. p. 155 (1879) '.

Hab. Mexico, Temax in North Yucatan (Gaumer); Costa Rica, Irazu 6000 to 7000

feet 1 (Rogers).

Eyes very slightly converging at the top, hardly reaching to the base of the

mandibles; the hinder ocelli separated from each other by about the same distance

they are from the eyes; the clypeus and cheeks with a white pubescence, the vertex

with a few hairs; there is a short indistinct furrow on the front. The prothorax is as

long as the head; an indistinct furrow on the pronotum and a large oblong hollow in

> “POMPILUS.: : 211

the sides; there is a black longitudinal furrow on the mesopleura. Median segment

with a rounded slope to the apex, which has an oblique one; down the middle it is

deeply furrowed, and at the sides at the base and apex there is a blunt tubercle. Apex

of the abdomen with some longish hairs. The legs are long, especially the tarsi, which

are twice the length of the tibia; the anterior tarsi with long curved spines and ciliated

beneath, the hinder tarsi with short spines; the tibial spines short, stout; the long

spur of the hinder tibie not reaching the middle of the metatarsus. The basal nervure

is interstitial, as is also the anal nervure in the hind wings.

In both sexes the third antennal joint is longer than the fourth; in the male the

apex of the clypeus is more transverse than it is in the female.

Apparently a common species in Yucatan.

63. Pompilus marcidus.

Pompilus marcidus, Smith, Journ. Ent. i. p. 3957; Cresson, Trans. Am. Ent. Soc. i. p- 1107.

Hab. Mexico, Orizaba (Mus. Brit.1). -

A specimen from Bugaba may belong to this species ; but Smith’s description is too

vague to enable me to speak with certainty, the description dealing only with colour.

As regards colour, the only difference is that P. marcidus has the apex of the four

hinder tarsi black and the femora red, while in the Bugaba specimen the hinder coxx

and femora are for the greater part black, and the tarsi without black. The Bugaba

example agrees with P. pygidialis in having the fore claws cleft, and also in the form of

the head, 2. ¢. the eyes converge more than usual atthe top. It is, however, evidently

distinct, for it has the third cubital cellule at the top not much more than half the

length of the bottom, it being also shorter than the second; the long tibial spur on

the fore legs does not equal the metatarsus in length, it being distinctly shorter;

the spur of the middle tibie is not much more than half, that of the hinder tibie

not two-thirds, the length of the metatarsus. No mention either is made of P. pygi-

dialis having the seven apical joints of the antenne black, nor of any black colour on

the hind legs. Undoubtedly, however, the two are very closely related. There are

only three spines on the fore metatarsus; and the nervure in the hind wings is received

beyond the cubital.

V 64. Pompilus torridus. (Tab. XI. figg. 28, head; 28 a, wing.)

Pompilus torridus, Smith, Journ. Ent. i. p. 396'; Cresson, Trans. Am. Ent. Soc. i. p. 110 >; Proc.

Bost. Soc. Nat. Hist. xii. p. 871°.

Pompilus torridus, var. burrus, Cresson, Proc. Bost. Soc. Nat. Hist. xii. p. 371‘.

Hab. Mexico!?, Orizaba (Sumichrast®, Sallé), Vera Cruz (Sartorius 4), Teapw-in’

Tabasco (H. H. Smith), Temax in North Yucatan (Gaumer).

Kyes slightly converging beneath; the hinder ocelli separated from each other by

2 EE 2

212 HYMENOPTERA.

about the same distance they are from the eyes; clypeus with the sides oblique, the

apex transverse. Prothorax as long as the head, the apex rounded; the median seg-

ment gradually rounded to the apex, which is oblique, with a large N-shaped hollow

in the middle, this hollow being for the greater part black. Abdomen shorter than

the head and thorax, the apex hardly pilose. The fore legs without spines; the long

spur of the hind tibiz reaching a little beyond the middle of the metatarsus.

Two specimens from Orizaba (Sallé), from which the above characters are taken,

doubtless belong to this species.

An example from Temax has the mesonotum in front and the median segment above

black, the hind tarsi also from the middle of the metatarsus being black. Another

‘example from North Yucatan has the wings lacteous.

In the male the antenne are stout, not tapering much towards the apex, the third

and fourth joints subequal.

J 65. Pompilus algidus.

Pompilus algidus, Smith, Cat. Hymen. Ins. iii. p. 158*; Cresson, Trans. Am. Ent. Soc. 1. p. 101’ ;

Proc. Bost. Soc. Nat. Hist. xii. p. 371°. .

Hab. Norva America, W. Virginia and Georgia ?.—Muzxico, Orizaba (Swmichrast*).

NOTOCYPHUS.

ot ocyphus, Smith, Cat. Hymen. Ins, iii. p. 172 (1855) ; Kohl, Verh. zool.-bot. Ges. Wien, xxxiv.

p- 50.

V1. Notocyphus plagiatus.

Notocyphus plagiatus, Smith, Journ. Ent. i. p. 398+; Cresson, Trans, Am. Ent. Soc. i. p. 184’.

Hab. Mexico? (Mus. Brit.').

V 2. Notocyphus albopictus.

Notocyphus albopictus, Smith, Journ. Ent. i. p. 398'; Cresson, Trans. Am. Ent. Soc. i. p. 184’.

Hab. Mexico? (Mus. Brit.+).

V 3. Notocyphus apicalis.

Niger, abdominis apice rufo ; alis fuliginosis.

Long. fere 9 millim.

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

Eyes very slightly converging beneath; the ocelli in a triangle, the hinder ones

separated from each other by about the same distance they are from the eyes; apex of

the clypeus almost transverse; a furrow, widest at the top, above the antenne.

Antenne stout, involute, the third joint distinctly longer than the fourth. Prothorax

NOTOCYPHUS. 213

as long as the head, subquadrate, rounded in front at the sides; the apex bluntly

angled ; scutellum narrowed towards the apex; the median segment nearly as long as

the mesothorax, flattish above, the apex rounded. Abdomen shorter than the thorax;

sessile, the apex acute, shining, beneath sparsely haired. Legs elongate, stout, the

base of the fore tarsi acutely incised; the tibie with a few minute spines; the long

spur of the hind tibie not reaching the middle of the metatarsus; the claws stout,

bifid; the tarsi sparsely spined. Head and thorax opaque, alutaceous, the abdomen

shining. |

Very distinct from the preceding species, N. plagiatus having blood-red colour on

the thorax, and WV. albopictus white.

JS 4. Notocyphus violaceipennis. (Tab. XII. fig. 1.)

Niger; alis violaceis. 9.

Long. 12 millim.

Hab. Mexico, Atoyac in Vera Cruz (H. H. Smith).

Head narrower than the thorax, transverse behind, very finely punctured, the front

distinctly channelled ; eyes very slightly converging beneath; the ocelli in a triangle,

the hinder ones separated from the eyes by about the same distance they are from each

other; the clypeus projecting, the apex rounded; the labrum longer than the clypeus,

narrowed gradually towards the apex, which is rounded. Antenne stout, longish; the

third joint a little longer than the fourth. The prothorax somewhat shorter than the

head, the apex arcuate, the base abrupt. The scutellum narrowed towards the apex.

The median segment elongate, the top flat; the apex sharply oblique, broadly incised,

acutely in the middle; the sides projecting into two stout teeth. Abdomen hardly so

long as the head and thorax united, the apex, viewed laterally, oblique and bearing a

few black hairs. Legs long; the tibie without spines; the tarsi ciliated beneath and

with some short spines; the long spur of the hind tibie reaching to the middle of the

metatarsus; the claws bifid. Wings shorter than the body; the third cubital cellule

at the top somewhat shorter than the distance bounded by the second recurrent and

the second transverse cubital nervures; the recurrent nervures are received in the

middle of the cellules, the second sharply elbowed. The palpi are testaceous.

Similar to WV. apicalis, but much larger, has the apex of the abdomen black, and

otherwise easily known by the sharply incised apex of the median segment. WV. tyran-

nicus, from Brazil, closely resembles NV. violaceipennis; but it has the median segment

differently formed, and the labrum truncated at the apex.

\/5. Notocyphus chiriquensis,

Niger, abdomine albo-maculato ; alis fuliginosis. ?.

Long. 15 millim.

Hab. Panama, Volcan de Chiriqui 3000 to 4000 feet (Champion). ‘

214 HYMENOPTERA.

Head opaque, shagreened, sparsely covered with black hairs, curved and rounded

behind ; the eyes almost parallel; the ocelli in a triangle, the hinder ones separated

from each other by about the same distance they are from the eyes; the vertex

depressed and furrowed in the centre ; the clypeus with the sides straight, the apex trans-

verse. Antenne a little longer than the head and thorax united, the third joint

slightly longer than the fourth, Thorax opaque, the pleure more shining; above

bearing a short pubescence, which is thicker and longer on the median segment. Pro-

notum a little shorter than the head, rounded at the base and apex ; scutellum narrowed

towards the apex, it being there not half the width of the base ; the median segment

at the apex almost transverse. Abdomen subpetiolate ; there isa large squarish yellow

spot on either side of the second segment, and the fifth and sixth segments are yellow

in the middle. Legs very long; the tibial spines numerous, short, thick, the tarsal

spines somewhat longer and thinner ; the coxe, especially behind, covered with silvery

pubescence ; the long spur of the hind tibie not reaching the middle of the metatarsus.

Radial cellule elongate; the second and third cubital cellules subequal above; the

first and second transverse cubital nervures oblique, straight, the first being more sharply

oblique than the second, the third elbowed; both the recurrent nervures are received

shortly before the middle of the cellule.

J 6. Notocyphus stimulator.

Niger, antennis, linea pronoti, tegulis, geniculis, tibiis tarsisque anterioribus brunneo-testaceis ; alis flavo-

hyalinis. <.

Long. 16 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Antenne stout, very slightly tapering towards the apex ; the third and fourth joints

subequal. Eyes almost parallel; the hinder ocelli separated from each other by a

greater distance than they are from the eyes ; the apex of the clypeus transverse; the

apex of the labrum incised in the middle. Prothorax shorter than the head; the apex

rounded. Median segment elongate, with a gradually rounded slope to the apex.

Abdomen longer than the head and thorax united, subsessile. Legs long and slender ;

the tibial spines short; the fore claws (but not the hind) with the tooth well deve-

loped ; the long spur of the hind tibiee reaching to the middle of the metatarsus.

EPIPOMPILUS.

Epipompilus, Kohl, Verh. zool.-bot. Ges. Wien, xxxiv. p. 57 (1885).

‘1. Epipompilus maximiliani.

Epipompilus maximiliani, Kohl, Verh. zool.-bot. Ges. Wien, xxxiv. p. 577, nota; xxxvi. p. 3407.

Hab. Mexico (Bilimek 2).

CALICURGUS.—PEPSIS. 215

CALICURGUS.

Calicurgus, Lepeletier de St.-Fargeau, Hist. Nat. des Ins. Hymén. iii. p. 397 (1845).

1. Calicurgus rhodogaster.

Calicurgus rhodogaster, Kohl, Verh. zool.-bot. Ges. Wien, xxxvi. p. 343°.

Hab. Mexico, Orizaba (Bilimek +).—Sovutn America, Brazil }.

V Pepsis.

Pepsis, Fabricius, Syst. Piez. p. 207 (1804).

This genus contains the largest and most striking forms of Pompilide. The species

from their similarity in structure, form, and colouring are not easily separated. In

this latter respect we find two types—one with the wings fiery-red, the other with the

wings violaceous ; and in both we have species with the antenne orange, and species

with the antenne black. We have, in fact, the same types of coloration as in the

larger Salius (Hemipepsis). The coloration of the wings is produced mainly by the

presence of minute scales.

i. Wings for the greater part fiery-red or fulvous. (Species 1-11.)

a. Antenne with the flagellum yellowish. (Species 1-7.)

1. Pepsis optima.

Pepsis optimus, Smith, Descr. of New Species of Hymen. p. 157 (1879) *.

Hab. Costa Rica, Volcan de Irazu 6000 to 7000 feet 1, Rio Sucio! (Rogers); Panama,

Bugaba 800 to 1500 feet (Champion), Volcan de Chiriqui 2000 to 3000 feet (Champion).

The largest species of the section, and known from the others by the apex of the

wings not being clouded. The labrum is closely punctured; the scape of the antenne

bears a few black hairs; the mesothorax is sparsely, the median segment very densely,

covered with black hairs; the median segment with a blunt tooth at the base and

apex, not furrowed down the centre, and without a transverse ridge; the mesopleure

not tuberculate ; the abdomen has a decided bluish tinge, and has its apex densely

covered with long black hairs above; the head is well developed behind the eyes, but

does not bulge out. If anything, the apex of the wings is clearer than the other

portion.

V2. Pepsis azteca.

Long. 34 millim.

Hab. Mexico, Atoyac in Vera Cruz (Schumann).

Very nearly related to P. optima, but smaller; the black band at the base of the fore

216 HYMENOPTERA.

and hind wings is much larger, and there is at the apex of both a blackish-violaceous

border; the median segment is longer, more narrowed towards the apex, and is

neither toothed at the base nor at the apex, the apex having a gradually rounded slope

(in P. optima it is abrupt, almost oblique).

The clypeus is moderately convex, the curve at the apex very slight; the labrum

punctured. The scape of the antenne is dull purplish-pruinose and without hair; the

base of the third joint is black. The head and thorax are velvety, moderately covered

with long black hair; the median segment is densely pilose. The head and thorax

have a much more distinct bluish tinge than they have in P. optima, as have also the

legs and abdomen. The latter has the apex densely covered with long, black, bristle-

like hairs above and beneath, and the other ventral segments have some long hairs.

The legs are blue, the spines black. The third transverse cubital nervure is curved

(not elbowed as in P. optima), the third cubital cellule being not much narrower at

the top than at the bottom; the first recurrent nervure is received nearer the middle

of the cellule than it is in P. optima.

V3. Pepsis guatemalensis. (Tab. XII. fig. 2.)

Long. 24 millim. 9.

Hab. Guaremata, San Gerénimo (Champion).

Very similar to P. azteca, but much smaller and more slenderly built; the body of

a more decided violaceous tint; the cloud at the base of the wings smaller and the

one at the apex larger, it extending to the third transverse cubital nervure ; the cubital

cellule at the top only half of the width at the bottom; the third transverse cubital

nervure curving more towards the second and thus narrowing the cellule; the median

segment at the base and apex very distinctly toothed, and with the apical transverse

ridge more distinct; the third antennal joint entirely black; and the apex of the

clypeus much more distinctly incised. ‘The head is not much narrowed behind the eyes

and is very sparsely covered with black hairs; the mesonotum has few hairs, and the

median segment hardly any, this being another point in which P. guatemalensis differs

from P. azteca. ‘The median segment is transversely striolate, and without a central

furrow. The apex of the abdomen with long, black, bristle-like hair; the other segments

sparsely haired. ‘The legs have the spines short and black, the legs themselves being

purplish-blue.

A male, also from San Gerdnimo, apparently belongs to the same species. It agrees

with the female in colour and clothing; but the wings are of a duller tint, and only the

basal two joints of the antenne are black, the incision in the apex of the clypeus is

deeper, the median segment is not so strongly tuberculate, the third cubital cellule is

wider at the top, the apex of the abdomen above is covered with black hair, and the

ventral surface is sparsely pilose, without tufts.

PEPSIS. 217

V' 4. Pepsis antennalis. (Tab. XII. fig. 3.)

Long. 22 millim. 4 .

Hab. Panama (Boucard).

Sericeous-blue ; the first, second, third, and fourth joints of the antenne black,

the remaining joints orange-yellow. Head covered with long black hair; the

frontal furrow wide and deep; the apex of the clypeus very slightly arcuate. The

median segment strongly transversely striolate ; the extreme apex sharply oblique and

strongly carinate at the top; the apical keel not depressed in the middle; the sides

and the mesopleure hardly tuberculated. The abdomen at the apex above and beneath

bearing long black hairs. The legs pruinose, very stoutly spinose. The fore wings

deep black at the extreme base, infuscated at the apex, but not deeply, for the rest

dull-yellow ; the hind wings entirely smoky-violaceous. The third cubital cellule

elongate; the third transverse cubital nervure sharply elbowed, so that at the top the

third cubital cellule is hardly half the length of the bottom; the second recurrent

nervure sinuate and received considerably in front of the middle of the cellule.

~ 65. Pepsis cinctipennis.

Pepsis cinctipennis, Mocsdry, Termes. Fiizetek, ix. p. 265 (1885) '.

Hab. GuatTemMata, Escuintla !.

“6. Pepsis chiron.

Pepsis chiron, Mocsary, Termes. Fiizetek, ix. p. 266 (1885) *.

Hab. Honpuras |,

“7. Pepsis andrei.

Pepsis andrei, Mocséry, Termes. Fiizetek, ix. p. 267 (1885) ".

Hab. GuaTEMALA 1,

b. Antenne entirely black. (Species 8-11.)

¥ 8. Pepsis montezuma. (Tab. XII. fig. 6.)

Pepsis montezuma, Smith, Cat. Hymen. Ins. iii. p. 199"; Cresson, Trans. Am. Ent. Soc. i. p. 146°.

Hab. Mexico!; Guatemata, El Tumbador, Zapote, Purula (Champion); Nicaracua,

Chontales (Belt); Costa Rica, Caché (fogers); Panama, Volcan de Chiriqui 7000 to

8000 feet (Champion).—Cotomaia !.

The apex of the clypeus is, for a Pepsis, rather deeply incised and bears some punc-

tures; the labrum is finely rugose ; the black cloud on the wings reaches to the basal

nervure; the mesopleure are bluntly tuberculate; the apex of the abdomen above is

densely covered with stiff longish hairs, beneath more sparsely with longer, softer hair.

BIOL. CENTR.-AMER., Hymenopt., Vol. II., October 1893. 2 FF

Ny HYMENOPTERA.

9, Pepsis sommeri.

Pepsis sommeri, Dahlbom, Hymen. Eur. i. p. 465°; Cresson, Trans. Am. Ent. Soc. i. p. 146’;

Proc. Bost. Soc. Nat. Hist. xii. p. 379°.

Hab. Mexico}, Vera Cruz (Sartorius? *); GuatEMALa °.

I have no doubt that P. montezuma is a synonym of this. Among the large number

of specimens in my possession, it is the only one with, as described by Cresson, the

basal third of the fore wings and the basal half of the hind wings black. They agree

also in size, and Cresson remarks ? that P. sommeri is quite abundant in Guatemala.

Smith in his Catalogue Hymen. Ins. iii. omits P. sommeri entirely.

‘10. Pepsis occidentalis. (Tab. XII. fig. 5.)

Long. 17 millim.

Hab, Mzxico, Xucumanatlan in Guerrero 7000 feet (H. H. Smith); Guaremata,

Purula and Senahu in Vera Paz, Cerro Zunil 4000 to 5000 feet (Champion); Panama,

Volcan de Chiriqui 4000 to 6000 feet (Champion).

Brilliant sericeous-blue; the antenne black; the wings fuscous-black to the basal

nervure, the apex the same colour from the second recurrent and the third transverse

cubital nervures. The antenne nearly as long as the body, covered with a dull micro-

scopic pile; the basal joints very closely amalgamated ; the apical joints dilated on the

lower side. The head covered with long black hair, distinctly narrowed behind

the eyes; the frontal furrow indistinct; the apex of the clypeus moderately arcuate ;

the labrum closely punctured. Thorax covered with long black hair. The median

segment with a gradually rounded slope to the apex; the apex broadly depressed

in the middle, where it is indistinctly transversely striated; the sides indistinctly tuber-

culate at the base and apex; the apical transverse keel very prominent and raised at

the sides. Abdomen as long as the thorax; the apex above thickly covered with

black hairs; the fourth segment with a tuft of long black hair on either side. The

third transverse cubital nervure is bluntly elbowed in the middle; the second recurrent

nervure is received almost in the middle of the cellule.

This is a much more slenderly built species than P. montezwma; the entire body and

head are of a brilliant sericeous-blue; the apex of the median segment is distinctly

depressed in the centre, and the slope is much more gradual, the hair also is longer and

thinner. The fore wings in the middle vary in colour from bright orange to dark

fuscous-orange ; and the hind wings may be entirely fuscous, or fuscous from the middle

only. Sometimes there is only a broad yellow band on the middle of the fore wings.

. 11. Pepsis rubra. (Tab. XII. fig. 7.)

Sphex rubra, Drury, Illustr. Exot. Ins. ii. p. 75, t. 39. fig. 6 (1778) *.

Pepsis rubra, Mocsary, Termes. Fiizetek, ix. p. 245.

PEPSIS. 219

Sphex auripennis, Degeer, Mém. Ins. iii. p. 585, t. 30. fig. 1°.

Pepsis auripennis, Dahlbom, Hymen. Eur. i. p. 121+.

Sphex cerulea, Fabr. Ent. Syst. ii. p. 219° (nec Linn.).

Pepsis cerulea, Fabr. Syst. Piez. p. 214°; Lepel. de St.-Fargeau, Hist. Nat. des Ins. Hymén. iii.

p. 475"; Cresson, Trans. Am. Ent. Soc. i. p. 147°.

Sphex speciosa, Fabr. Ent. Syst. i. p. 217°.

Pepsis speciosa, Fabr. Syst. Piez. p. 216”.

Pompilus formosus, Say, Western Quarterly Reporter, ii. p. 76"; Am. Ent. iii. p. 91, t. 42. fig. 1”;

Complete Writings, i. pp. 91, 165”.

Pepsis formosa, Cresson, Trans, Am. Ent. Soe. i. p. 144".

Hab. Nortu America, Texas 4, California 8 14.—Mexico, Northern Sonora

(Morrison), Presidio de Mazatlan (forrer), Amula and Xucumanatlan in Guerrero,

Atoyac in Vera Cruz (Hl. H. Smith), Valladolid and Temax in Yucatan (Gaumer);

GuaTEeMALA, El Reposo, Guatemala city, San Gerdnimo (Champion).—Sovutu Anoonica*™,

Surinam 34, Amazons; ANTILLES, San Domingo, Antigua !.

In this species the apex of the wings is clear before the black cloud. The frontal

channel is distinct, and there is a curved furrow behind the ocelli. The median

segment is thickly covered with long black hair; the apex at the top is strongly

keeled ; there are no tubercles. The mesopleure are bluntly tuberculated. The hair

on the apex of the abdomen is long and stiff. The third transverse cubital nervure is

curved, not elbowed ; at the top the third cubital cellule is three-fourths of the length

it is at the bottom.

The male has the antenne rather long and thick, covered closely with a dull micro-

scopic pile, and with the joints very closely articulated. The apex of the clypeus is

more deeply arcuate than in the female, and the head and thorax have the hair longer

and thicker. Above, the apex of the abdomen has no hair, only a thick depressed pile ;

at the sides, the apex of the penultimate ventral segment has a sharp curved tooth ; the

ventral surface is entirely glabrous.

ii. Wings violaceous or bluish. (Species 12-21.)

c. Antenne with the flagellum reddish or luteous. (Species 12-16.)

12. Pepsis ruficornis.

Sphex ruficornis, Fabr. Ent. Syst. 1. p. 219°.

Pepsis ruficornis, Fabr. Syst. Piez. p. 215°; Dahlbom, Hymen. Eur. i. pp. 119, 463°; Lepel. de

St.-Fargeau, Hist. Nat. des Ins. Hymén. iii. p. 480°; Cresson, Proc. Ent. Soc. Phil. iv.

p. 184°; Trans. Am. Ent. Soc. i. p. 148°; Smith, Cat. Hymen. Ins. iii. p. 198”.

Hab. Honpuras’.—Sovuta America! ?3, Cayenne*?; ANTILLES, Cuba °°,

I am unable to identify this species, and think it very probable that the records may

refer to the next, P. charon. In none of the descriptions is any mention made as to

2 FF 2

220 HYMENOPTERA.

whether the median segment is toothed or not. Cresson gives the length as from 7 to |

14 lines.

‘13. Pepsis charon. (Tab. XII. fig. 4.)

Pepsis charon, Mocsary, Termes. Fuzetek, ix. p. 255 (1885)’.

Hab. Mexico, Rincon in Guerrero 2800 feet (H. H. Smith), North Yucatan (Gaumer) ;

GuatemaLa, Lanquin in Vera Paz (Champion); Nicaragua, Chontales (Janson) ;

Panama! (Boucard), Volcan de Chiriqui 2500 to 4000 feet, Caldera (Champion), -

Chiriqui }. .

An example from the Volcan de Chiriqui has the body of a decidedly greenish tinge,

with hardly a trace of blue, the wings also being much duller in tint and having an

obscure greenish tinge.

The male is similarly coloured to the female, but the flagellum may have the luteous

colour obscured ; the clypeus does not gape so much, and has the incision at the apex

angled in the middle; the tufts of hair on the fifth abdominal segment are short, very

stiff, and closely pressed together; the sixth segment is thickly covered with black hair,

and is roundly incised at the apex. Above, the apical two segments are covered with

short black hair.

The male of the above-mentioned greenish form from Chiriqui has the antenne of a

brighter colour, and the base of the flagellum may be black.

“ 14. Pepsis prismatica.

Pepsis prismatica, Smith, Cat. Hymen. Ins. i. p. 200’; Cresson, Trans. Am. Ent. Soc. i. p. 148’.

Hab. Mexico}. |

This is no doubt identical with P. charon.

15. Pepsis fulvicornis.

Pepsis fulvicornis, Mocsary, Termes. Fiizetek, ix. p. 252 (1885) *.

Hab. Panama},

16. Pepsis solitaria.

Pepsis solitarius, Smith, Descr. of New Species of Hymen. p. 156 (1879) '.

Hab. Costa Rica, Volcan de Irazu 6000 to 8000 feet! (Rogers); Panama, Bugaba

(Champion).

This species has the apex of the clypeus rather deeply arcuate, and, like the labrum,

finely and closely punctured; the median segment at the base and apex bluntly tuber-

culate, this being also the case with the mesopleure ; the fifth ventral segment with a

tuft of long, black, soft hair on either side; and the third transverse cubital nervure

elbowed.

PEPSIS. 221

y d. Antenne black or fuscous. (Species 17-21.)

| 17. Pepsis amabilis,

Pepsis amabilis, Mocsaéry, Termes. Fiizetek, ix. p. 253 (1885) °.

Hab. Mexico, Presidio de Mazatlan (forrer), San Blas in Jalisco (Schumann), Teapa

in Tabasco (H. H. Smith), North Yucatan (Gawmer); British Honpuras, R. Sarstoon

(Blancaneauz); Guarema.a, El Reposo 800 feet (Champion); Panama (Boucard).—

Soutu America, AMAZONS!.

Specimens of what I take to be the male of this species have the antenne greyish-

fuscous in colour, rather thick, slightly tapering towards the apex, and densely pruinose ;

the clypeus convex, with the apex arcuate; the head and thorax, especially the median

segment, more densely haired ; the abdomen at the apex, the cedeagus excepted, without

hair (nor is there any on the ventral segments), the cedeagus densely covered with

black hair.

Y 48, Pepsis terminata.

Pepsis terminata, Dablbom, Hymen. Eur. i. pp. 120, 464°; Mocsary, Termes. Fiizetek, ix. p. 247°.

- Pepsis ornata, Lepel. de St.-Fargeau, Hist. Nat. des Ins. Hymén. iii. p. 486°; Cresson, Proc. Ent.

Soc. Phil. iv. p. 183°; Trans. Am. Ent. Soc. i. p. 148°.

Hab. Muxico, Rincon in Guerrero (H. H. Smith), North Yucatan (Gaumer).—Sovtu

America!, Surinam 23, Brazil??; AntiLLEs, Cuba?*°, Martinique 2,

19. Pepsis venusta. (Tab. XII. fig. 9.)

Pepsis venusta, Smith, Cat. Hymen. Ins. ii. p. 196'; Mocsdry, Termes. Fiizetek, ix. p. 247

(1885) *.

Hab. Mexico, Presidio? (Forrer), Rio Papagaio and Xucumanatlan in Guerrero

(H. H. Smith), Santiago Iscuintla (Schumann), Rinconada (Schaus), Valladolid and

Temax in Yucatan (Gawmer).—Souts America, Brazil, Tapajos 1, Obidos ?.

The wings vary in the extent of the white cloud at the apex: in some specimens it

commences at the base of the radial cellule, in others at, or beyond, its apex. An

example from Santiago Iscuintla has the apex of the antenne black, and the body more

bluish and purplish than in the other specimens ; but, as it agrees with them in having

the sixth ventral segment deeply incised and toothed, it is referable, no doubt, to

P. venusta.

The female I have not seen, but we have plenty of males.

20. Pepsis centralis.

Long. 45-48 millim.

Hab. Guatemata, El Reposo 800 feet (Champion); Panama, David (Champion).

Head and thorax deep black, with slight bluish reflections in front; the abdomen

222 HYMENOPTERA.

blue, darker at the base; the antenne with the flagellum fuscous-black. Head nearly

as wide as the thorax, distinctly retreating behind the eyes, sparsely covered with

' blackish hair; the clypeus convex, the apex arcuate, but not quite rounded in the

middle; the labrum finely punctured ; the palpi with the apices of the joints testaceous ;

the front above the antenne depressed, and with a deep channel in the centre. Thorax

velvety, opaque; the pleure distinctly tuberculate; the median segment transversely

striated, but not strongly, the apex denticulate. Abdomen elongate; the apex densely

covered with black hairs. Legs bluish or violaceous. Wings deep, very brilliant

violet.

Specimens of what I take to be the male have the antenne brownish at the apex ;

they have two dense tufts of stiff hairs on the fifth ventral segment and a small tuft on

the sixth segment. .

P. centralis may ,be known from P. amabilis by the wings being of a brilliant

violaceous colour, without a trace of black or fuscous, and by the mesopleure being

distinctly tuberculate. The male may be known by the dense tufts of hair on the fifth

ventral segment, these being absent in the corresponding sex of P. amabdilis.

21. Pepsis obscura.

Pepsis obscura, Lepel. de St.-Fargeau, Hist. Nat. des Ins. Hymen. ii. p.490*; Smith, Trans. Ent.

Soc. Lond. 3rd ser. 1. p. 86°; Cresson, Trans. Am. Ent. Soc. i. p. 149°.

Hab. PanaMa?.—Braziul.

Smith? remarks that the insect from Panama “ agrees precisely with the description,

excepting that the tips of the antenne are yellow, which is not mentioned by

St.-Fargeau ; still I am inclined to believe it is the same species, and probably the

male of P. elevata.”

Fam. SCOLIIDA:.

This well-marked family is not very numerously represented in our region; but some

of its species are among the largest, most striking, and commonest of the Hymenoptera

inhabiting Central America.

The family divides itself naturally into two sections—one, represented by Scolia and

Elis, large, often hairy species, with reniform eyes; the other by Myzine and Tiphia,

which are much smaller and have not the eyes emarginate, except in the male of

Myzine.

As regards Scolia and Elis, it may be remarked that they vary greatly in size, and

that the sculpture of the head and thorax is not always uniform in the same species, as

it becomes more or less altered through their burying habits.

SCOLIA. 223

SCOLIA.

Scolia, Fabricius, Syst. Ent. p. 855 (1775); Saussure & Sichel, Cat. Sp. Gen. Scolia, p. 14.

Tiphia, Fabricius, Syst. Ent. ii. p. 223; Syst. Piez. p. 282 (part.).

Triscolia, Saussure & Sichel, loc. cit. p. 14.

Discolia, Saussure & Sichel, loc. cit. p. 14.

I follow Saussure and Sichel in their definition of this genus ; but Kirby, Trans.

Ent. Soc. Lond. 1889, p. 443, separates it into two, using the name Scolia for the

section with three cubital cellules, and Discolia for that with two only.

The species are not nearly so numerous in the western as in the eastern hemisphere.

As regards the arrangement of the species in this genus, as also in Elis, I have followed

Saussure and Sichel in their well-known monograph, ‘Catalogus Specierum Generis

Scolia’ (1864).

A. Fore wings with three cubital cellules=Triscotia. (Species 1.)

1. Scolia fervida. (Tab. XII. fig. 17.) |

Scola fervida, Burm. Abh. Nat. ges. Halle, i. 4, p. 20*; Sauss. & Sichel, Cat. Sp. Gen. Scolia,

p. 53”.

Scolia ardens, Smith, Cat. Hymen. Ins. ii. p. 112°.

Scolia montezume, Sauss. Rev. Zool. 1857, p. 281 *.

Hab. NortH America, Texas *.—MeExico1? 4, Northern Sonora (Morrison).

The specimen from Northern Sonora has the second abdominal segment broadly red,

and covered with red hairs.

B. Fore wings with two cubital cellules=Disco.ta.

a. Body and wings entirely black. (Species 2 and 3.)

2. Scolia azteca.

Scolia azteca, Sauss. Rev. Zool. 1857, p. 281+; Ann, Soc. Ent. Fr. 1858, p. 218°; Sauss. & Sichel,

Cat. Sp. Gen. Scolia, p. 128°.

? Scolia tristis, Burm. Abh. Nat. ges. Halle, i. 4, p. 36%.

Hab. Mexico ? *, Tampico 1, Cordova !.

3. Scolia monticola.

Nigerrima, nitida, dense hirta; ventris basi non tuberculata; alis nigro-ceruleis. 9 et ¢.

Long., 2 18-23, g 15-18 millim.

Hab. Mexico, Chilpancingo 4600 feet, Venta de Zopilote 2800 feet, Amula 6000

feet, Xucumanatlan 7000 feet, and Acapulco, all in Guerrero (H. H. Smith).

Deep black, shining; the head and thorax densely covered with a short, thick, black

pubescence; the back of the abdomen densely covered with short, the ventral surface

with long, black hairs. The head covered with large, distinctly separated punctures ;

224 HYMENOPTERA.

the mesonotum and scutellum coarsely and strongly punctured; the median segment

also punctured over the entire surface, but with the punctures somewhat smaller than

those on the mesonotum. Abdomen closely and finely punctured; the hair on the

apical segments above long, black, and thick. Legs deep black, the spines and hair

also black. Wings deep violaceous-blue.

The male is similarly coloured and clothed, the antenne in this sex bearing a close

microscopic greyish pile, which gives them a palish appearance.

It is obvious that this insect is nearly related to S. azteca; the latter, however, differs.

from S. monticola in having the ‘‘ segmenti ventralis secundi baseos subtruncate tuber-

culum medium obtusum, ¢ minutum, fere evanidum, ¢ majus, latiusculum, medio

transverse emarginatum, utrinque longitudinaliter subcarinatum.”

b. Body with yellow markings, the wings fusco-violaceous. (Species 4 and 5.)

4, Scolia guttata.

Scolia guttata, Burm. Abh. Nat. ges. Halle, 1. 4, p. 36°; Smith, Cat. Hymen. Ins. iii. p. 97’;

Sauss. Ann. Soc. Ent. Fr. 1858, p. 218°; Sauss. & Sichel, Cat. Sp. Gen. Scolia, p. 180%.

Hab. Mexico! ?*, San Blas in Jalisco (Schumann), Orizaba (H. H. Smith & F. D. G.),

Atoyac in Vera Cruz (Schumann); GuaTEMALA, Panima and San Gerénimo in Vera Paz

(Champion); Nicaragua, Chontales (Belt); Costa Rica, Volcan de Irazu 6000 to 7000

feet (Rogers); Panama, Bugaba and David in Chiriqui (Champion).—CoLompra?;

VENEZUELA®, Caracas 4.

This is a very variable species, not only in size (20-30 millim.), but in coloration.

The commonest form has the edge of the clypeus, a triangular mark on either side

of the pronotum, a larger squarish one on the mesopleure below the tegule, the

scutellum and postscutellum, a small mark on either side of the basal abdominal

segment, two larger roundish marks on the second segment, two smaller ones on the

third, and a transverse mark on the base of the apical segment, yellow.

A variety from Orizaba has a large mark on either side of the pronotum, a small

mark on one side of the scutellum, the postscutellum entirely, a small mark in the centre

of the median segment, and a larger one on either side of it, a broad transverse line on

the basal segment of the abdomen, two large marks on the second segment, two some-

what smaller ones on the third, and two very much smaller ones on the fourth segment,

bright lemon-yellow; another specimen from the same locality has two marks on the

pronotum, the postscutellum, two marks on the base of the median segment, two marks

(almost united) on the basal abdominal segment, two large ones on the second segment,

two somewhat smaller ones on the third, and two much smaller spots on the fourth

segment, yellow.

An example from Bugaba has two large marks on the pronotum, the scutellum, and

postscutellum, and two roundish marks on the four basal abdominal segments, yellow.

SCOLIA. — 225

In one specimen, from Costa Rica, the yellow is reduced to two marks on the second

and third segments; in another, from Jalisco, Mexico, the only yellow to be seen is on

the second abdominal segment, in the form of two yellow marks; and, lastly, we have

two examples without any yellow whatever. In some specimens the marks are almost

white, not yellow. .

Our male examples do not show much variation; they have either two yellow marks

on the first and second abdominal segments, or two on the second segment only.

~ 5, Scolia mexicana.

Scolia mexicana, Sauss. Ann. Soc. Ent. Fr. 1858, p. 219’; Sauss. & Sichel, Cat. Sp. Gen. Scolia,

p. 1827.

Hab. Mexico 1 ?.

I should say that this is very probably a form of S. guttata.

c. Abdomen black, the apex reddish, the segments ciliated with red hairs ;

wings blackish-blue. (Species 6 and 7.)

6. Scolia dubia.

Scolia dubia, Say, Bost. Journ. Nat. Hist. i. p. 8364’; Complete Writings, ii. p. 749°; Sauss.

Mélang. Hymén. p. 41°; Sauss. & Sichel, Cat. Sp. Gen. Scolia, p. 184‘.

Scolia aulicu, Burm. Abh. Nat. ges. Halle, i. 4, p. 33°; Smith, Cat. Hymen. Ins. iii. p. 96°; Sauss.

Rev. Zool. 1857, p. 2817. -

Hab. Norta America, United States!, Carolina4®®, Louisiana*, Maryland 4,

Tennessee 4.— Mexico * °.

7. Scolia hematodes.

Scolia hematodes, Burm. Abh. Nat. ges. Halle, i. 4, p. 83°; Sauss. Rev. Zool. 1857, p. 281’;

Sauss. & Sichel, Cat. Sp. Gen. Scolia, p. 134°.

Scolia dubia, Smith, Cat. Hymen. Ins. iii. p. 97* (nec Say).

Elis americana, Sauss. Rev. Zool. 1857, p. 282 (var. 3)”.

Hab. Norru America, United States, Texas +.—Muexico 1345,

d. Abdomen black, marked with yellow ; wings hyaline, wholly or in part. (Species 8-10.)

8. Scolia anceps.

Scolia anceps, Sauss. Ann. Soc. Ent. Fr. 1858, p. 221’; Sauss. & Sichel, Cat. Sp. Gen. Scolia,

p. 137’.

Hab. Mexico! 2,

BI OL, CENTR.-AMER., Hymenopt., Vol. II., October 1893. 2 ae

226 HYMENOPTERA.

9, Scolia otomita.

‘Scolia otomita, Sauss. Ann. Soc. Ent. Fr. 1858, p. 223'; Sauss. & Sichel, Cat. Sp. Gen. Scolia,

p. 188’.

Hab. Mexico ! 2.

10. Scolia saussurei. (Tab. XII. fig. 9.)

Nigra, hirta, maculis 2 pronoti postscutelloque flavis; abdomine flavo-bifasciato, apice rufo-hirto; alis

fumatis. ©.

Long. fere 14 millim.

Hab. Mexico, Jaral in Guanajuato (Schumann).

Head coarsely punctured; the front ocellus in a deep, round pit. Mesonotum

coarsely and strongly punctured all over; the scutellum with the. punctures larger

and more widely separated. The median segment with the central part finely, the

lateral regions more strongly punctured; the sides projecting, rounded. The head

and thorax covered with fulvous hair, that on the median segment being longer

and paler. The yellow marks on the pronotum are somewhat triangular. The

abdomen above is covered with long fulvous hair, beneath with longer paler hair;

the segments are fringed with golden-fulvous hair, the fifth and sixth densely covered

all over with fulvous-golden hair; the basal segments are finely punctured ; the ventral

surface is much more strongly punctured, the segments fringed with pale golden hair ;

the third segment is for the greater part pale yellow, the black basal band projecting

in the middle; the fourth segment is yellow, except for a very narrow black apical

band. ‘The legs are black, covered with long pale hair; the tarsal spines rufous. The

wings are fusco-hyaline, the fore margin much darker, the dark band extending from

the base to near the apex, the costa dark testaceous.

ELIS.

Elis, Fabricius, Syst. Piez. p. 248 (1804) (part.); Saussure & Sichel, Cat. Sp. Gen. Scolia, p. 14..

Campsomeris, Lepeletier de St.-Fargeau, Hist. Nat. Ins. Hymén. iil. p. 496 (1845).

Colpa, Lepeletier de St.-Fargeau, loc. cit. p. 534.

Trielis, Saussure & Sichel, Cat. Sp. Gen. Scolia, p. 14.

Dielis, Saussure & Sichel, loc. cit.

As in Scolia, Elis includes two sections—one with three cubital cellules, the other

with two only. Kirby, Trans. Ent. Soc. Lond. 1889, p. 443, adopts these as distinct

genera, using the name Elis for the section with three cubital cellules = Zirielis, and

Campsomeris for that with two cubital cellules=Dielis. Of Trielis we have no species

recorded from within our limits, and the section is rare in the Nearctic region ; but Dielis

contains some of the largest and most striking of the Central American Hymenoptera.

ELIS. 227

a. Wings blackish-violaceous ; the base broadly hyaline (Sp. 1), or

reddish-hyaline (Sp. 2). (Species 1 and 2.)

“1. Elis vitripennis. (Tab. XII. fig. 10.)

_ Scolha vitripennis, Smith, Cat. Hymen. Ins. ii. p. 108°.

Elis vitripennis, Sauss. & Sichel, Cat. Sp. Gen. Scolia, p. 216”. Lot

Hab. Mexico 2, Tierra Colorada in Guerrero 2000 feet (H. H. Smith).—SoutH AMERICA,

Amazons !, Brazil 2.

An example from Guerrero probably belongs to this species; but it hardly agrees

with Smith’s description ! of the sculpture, “head and thorax strongly and closely punc-

tured, subopaque.” It has the head and thorax shining, though they are not strongly

punctured. The fusco-violaceous colour of the wings reaches from the apex to the

basal nervure. The yellow band on the apex of the second abdominal segment is

widely interrupted, that on the third is entire above, but interrupted beneath; there

are two yellow lines on the fourth segment beneath.

2. Elis atrata.

Scolia atrata, Fabr. Syst. Ent. p. 355+; Ent. Syst. ii. p. 228%; Syst. Piez. p. 239°; Burm. Abh.

Nat. ges. Halle, i. 4, p. 284; Smith, Cat. Hymen. Ins. iii. p. 106’.

Colpa atrata, Lep. de St.-Fargeau, Hist. Nat. Ins. Hymén. iii. p. 535°.

Elis atrata, Sauss. Mélang. Hymén. p. 567; Sauss. & Sichel, Cat. Sp. Gen. Scolia, p. 213°.

Hab. Panama, David in Chiriqui (Champion).—AntiLiEs, Cuba 4*7, San Domingo *°,

Jamaica > 7,

A single example from the State of Panama (<¢) is perhaps referable to E. atrata

(Fabr.); it agrees fairly well with Saussure and Sichel’s® description of the variety a of

that species from Patagonia, although these authors also refer their insect doubtfully

to EH. vittata, Sichel.

The Panama insect may be described as follows:—Body shining, covered with a

short, close, black pile; the face from a little above the antenne coarsely and strongly

punctured ; the vertex shining, with a few widely separated punctures ; the mesonotum

with the lateral portions strongly punctured, and with two rows of punctures down the

sides; the scutellum strongly punctured, except at the sides; the median segment above

very closely punctured, slightly projecting in the middle, the apex covered with a silvery

pile, smooth, impunctate, except for a few punctures at the sides; the mesopleure

punctured only in front. Abdomen smooth, shining, impunctate, except at the apices

of the segments, sparsely covered with black hairs, the segments fringed with short

black hairs, the apical segment densely covered with dull rufous hairs; on the first

segment is an almost continuous yellow mark; on each of the second to the fourth

segments are two large, irregular, yellow marks, those on the second segment being

26a 2

228 HYMENOPTERA.

the larger. Legs black, the hairs and spines also black. The wings reddish-hyaline,

the apex broadly violaceous; the costa and nervures ferruginous.

b. Wings fusco-violaceous throughout ; the body black. (Species 3.)

_ 8, Blis regina. (Tab. XII. figg. 11,4; 12,2.)

Elis regina, Sauss. Ann. Soc. Ent. Fr. 1858, p. 237°; Sauss. & Sichel, Cat. Sp. Gen. Scolia,

p. 2187,

Hab. Mextco!?; Honpuras, Ruatan I. (Gawmer).—Sovra America, Brazil? ?.

This may be only a form of E. peregrina, Lep. de St.-Fargeau (Hist. Nat. Ins. Hymén.

iii. p. 584=Scolia atrata, Klug, in Weber & Mohr’s Beitr. i. p. 21). The Honduras

insect measures, 2 43, ¢ 28 millim. long. The head is shining, rather closely and

strongly punctured below the middle, except immediately in front of the ocelli; behind

the ocelli the punctures are smaller and much more widely separated. The meso-

notum is shining and impunctate in the centre, the sides bearing large, widely

separated punctures; the scutellum is impunctate at the base and down the middle,

the sides bearing scattered punctures; the median segment is closely and strongly

punctured. The abdomen has the three basal segments velvety, the three apical

segments bare and shining, the apex above thickly covered with stiff, depressed, bristle-

like hairs; the segments are fringed with black hairs; the ventral segments towards

the apex bear hairs which originate from punctures; the apical ventral segment is

punctured at the apex, and laterally projects into two stout teeth. The pleure

(especially the propleurz) are covered with long black hair.

A specimen of what I take to be the male of the same species has the head closely

punctured, with a semicircular furrow below the ocelli; the thorax above closely

punctured all over, except that the scutellum is not so thickly punctured as the

mesonotum ; the pleure and breast thickly covered with long black hair; the abdomen

punctured and covered with short black hair, the ventral surface also punctured, but not

so densely haired ; the pronotum with two yellow marks in front; the wings subhyaline,

infuscated along the costa, and not deep violaceous as in the female.

c. Wings hyaline or yellowish-hyaline throughout ; the body black. (Species 4 and 5.)

“ 4, Elis hyalina.

Campsomeris hyalina, Lep. de St.-Fargeau, Hist. Nat. Ins. Hymén. iii. p. 4977.

Scolia hyalina, Burm. Abh. Nat. ges. Halle, i. 4, p. 23°; Smith, Cat. Hymen. Ins. iii. p. 106°.

Elis hyalina, Sauss. & Sichel, Cat. Sp. Gen. Scolia, p. 219%.

Elis fallax, Sauss. Mélang. Hymén. p. 62’.

Hab. Mexico’, Atoyac in Vera Cruz (Schumann); Guatemata, Coban in Vera Paz,

Cerro Zunil (Champion); Costa Rica, Caché (Van Patten); Panama‘, Volcan de Chiriqui

ELIS. 229

2000 to 3000 feet (Champion).—Sourn America, Guiana‘, Surinam! 3, Brazil 234,

Monte Video ‘4, Peru 4, Chili‘.

As in most of the allied species the colour of the wings varies.

A variety of the male has a yellow interrupted line on the second and third abdominal

segments,

5. Elis albofimbriata. (Tab. XII. fig. 13.)

Scolia albofimbriata, Smith, Descr. of New Species of Hymen. p. 189 (1879)'.

Hab. Costa Rica, Caché ! (Rogers); Panama, Bugaba, Volcan de Chiriqui 2000 to

3000 feet (Champion).

This species comes near LE. hyalina, but is much smaller; the vertex behind the

ocelli is smooth and impunctate; the thorax is strongly punctate, the middle of the

mesonotum being impunctate; the apex of the median segment is more sharply

oblique ; the abdomen bears long grey hairs, and the segments at the apex are fringed

with cinereous hairs (not black hairs as in EL. hyalina); the radial cellule is longer and

more sharply obliquely truncated at the apex; and the hair on the legs is cinereous,

not black. The colour of the wings varies.

d. Wings hyaline, fuscous, black, or violaceous along the costa; the abdomen black

/ (Sp. 6), or with yellow markings (Sp. 7). (Species 6 and 7.)

\/ 6. Elis costalis.

Campsomeris costalis, Lep. de St.-Fargeau, Hist. Nat. Ins. Hymén. ii. p. 497°.

Scolia costalis, Smith, Cat. Hymen. Ins. iii. p. 107”.

Elis costalis, Sauss. & Sichel, Cat. Sp. Gen. Scolia, p. 223°.

Hab. Mexico (Sallé); Honpuras, Ruatan I. (Gawmer); GuateMata, Panima in Vera

Paz (Champion); Costa Rica, Caché (Rogers); Panama, Volcan de Chiriqui 2000 to

3000 feet (Champion).—Soutn America®, Cayenne }, Brazil ?.

4. Blis variegata.

Scolia variegata, Fabr. Ent. Syst. ii. p. 230°; Syst. Piez. p. 241°; Klug, in Weber & Mohr’s Beitr.

i. p. 28°; Burm. Abh. Nat. ges. Halle, i. 4, p. 29°; Erichs. in Schomburgk’s Reisen in Brit.

Guiana, iii. p. 589°; Smith, Cat. Hymen. Ins. iii. p. 108°.

Colpa variegata, Lep. de St.-Fargeau, Hist. Nat. Ins. Hymén. iii. p. 544”.

Elis variegata, Sauss. & Sichel, Cat. Sp. Gen. Scolia, pp. 226, 303°.

Scolia hoffmannseggii, Klug, in Weber & Mohr’s Beitr. i. p. 37°; Burm. Abh. Nat. ges. Halle, i. 4

p- 29°; Smith, Cat. Hymen. Ins. iii. p. 106”.

Scolia fuscata, Klug, in Weber & Mohr’s Beitr. ii. p. 213”.

Scolia irregularis, Smith, Cat. Hymen. Ins. iii. p. 107”.

Elis lativentris, Sauss. Mélang. Hymén. p. 59 ™.

? Colpa bistrimacula, Lep. de St.-Fargeau, Hist. Nat. Ins. Hymén. iu. p. 546”.

230° HYMENOPTERA.

Hab. Mexico (Sallé), Orizaba (H. H. Smith & F. D. G.); Panama (Boucard).—Sovta

AmericaS; VENEZUELA, Caracas®; Gurana®, Cayenne!27; Brazit’ 18, Rio Janeiro 4%,

Bahia 8, San Paulo 1°91 15,

A very variable species.

e. Wings fuscous or fusco-violaceous ; the abdomen banded with red or fulvous.

(Species 8 and 9.)

8. Elis ephippium. |

Scolia ephippium, Say, Bost. Journ. Nat. Hist. i. p. 8363'; Complete Writings, il. p. 748°.

Elis ephippium, Sauss. & Sichel, Cat. Sp. Gen. Scolia, p. 229°; Cresson, Trans. Am. Ent. Soc.

iv. p. 201 *. |

Scolia petitii, Guérin, Voy. de Coq., Zool. ii. 2, p. 249°; Smith, Cat. Hymen. ii. p. 109°; Burm.

Abh. Nat. ges. Halle, i. 4, p. 217.

Hab. Norte America, Louisiana 3, Texas 4-—Mexico ! 2 5°7, Soledad, Xautipa, Amula,

Tierra Colorada, and Rincon, all in Guerrero (H. H. Smith), Pinal near Puebla, Jalapa

(fF. D. G.), Paso del Macho, Cordova (Hége), Orizaba (F. D. G. & H. H. Smith); Hon-

puras, Ruatan I. (Gawmer); Guatemaa, Duefias, San Geronimo (Champion) ; Nicaragua,

Chontales (Belt); Costa Rica, Volcan de Irazu 6000 to 7000 feet, Rio Sucio (Rogers) ;

Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Great variation is shown in size by this common species—in the females from 30-45

millim. The colour of the second and third abdominal segments above varies from

deep reddish-orange almost to yellow; in both sexes the colour of the wings ranges

from deep bluish-violaceous through fuscous, dark or pale, to almost hyaline. In the

male the basal abdominal segment may be marked with orange. |

I have examined an example of #. wagneriana, Sauss. (Cat. Sp. Gen. Scolia, p. 229),

from Chimborazo, and I am inclined to look upon it as a form of #. ephippium, from

which it is chiefly to be separated by having the wings hyaline. As pointed out above,

the wings in both sexes vary in colour; and we have a male of L. ephippium from

Costa Rica which has the wings quite as hyaline as in the typical 4. wagneriana.

‘/ 9, Elis dorsata.

Tiphia dorsata, Fabr. Mant. Ins. i. p. 279'; Ent. Syst. ii. p. 226°; Syst. Piez. p. 235°.

Scolia dorsata, Klug, in Weber & Mohr’s Beitr. 11. p. 212°; Smith, Cat. Hymen. iii. p. 106°.

Elis dorsata, Sauss. Mélang. Hymén. p. 55°; Sauss. & Sichel, Cat. Sp. Gen. Scolia, pp. 230, 308”.

Scolia hematogastra, Perty, Del. Anim. Art. Bras. p. 139, t. 27. fig. 13 (?)°; Erichs. in Schom-

burgk’s Reisen in Brit. Guiana, iii. p. 589°.

Colpa rubrida, Lep. de St.-Fargeau, Hist. Nat. Ins. Hymén. iii. p. 544°.

Elis tolteca, Sauss. Rev. Zool. 1857, p. 282”; Sauss. & Sichel, Cat. Sp. Gen. Scolia, pp. 231, 309”.

Hab. Nort America, Lower California !2.W—MeExico 12, Northern Sonora (Morrison),

ELIS. 2931

Tampico (Saussure 11), Tres Marias Is. (Forrer), Acapulco, Rio Papagaio, and Venta de

Zopilote, all in Guerrero (H. H. Smith), Santiago Iscuintla in Jalisco (Schumann), San

Lorenzo near Cordova (M. Trujillo), Atoyac in Vera Cruz (H. H. Smith), Temax in

North Yucatan (Gaumer); Guatemata, Capetillo (Champion); Panama, David (Chan-

pion). —VeEnEzurLa’; Gurana®, Cayenne?; Amazons; Braziu®7, Bahia’; Cum!2;

ANTILLES, Haiti 12, St. Thomas 22.

This common and widely distributed species shows great variation in the colour of

the abdomen. In some examples the third and fourth abdominal segments only are

red—either entirely or with the edges marked with black; in others, the segments

from the second are entirely red, or red with the base lined with black, regularly or

irregularly. The apical segment is usually black ; but in rare cases it may be orange,

including the hairs, In a few specimens the basal segment has a pale yellow band.

The wings vary in colour from deep violaceous to pale fuscous. The species also shows

great variation in size: we have a specimen from North Yucatan only 15 millim. in

length, while other Mexican examples nearly reach 30 millim.

The male differs greatly from the female in coloration, it having a mark on the clypeus,

another on the pronotum, and the scutellum and postscutellum yellow; while on the

abdomen (instead of the red or orange colour of the female) there are four (sometimes

only three) yellow fascie ; the wings, too, are subhyaline or pale fuscous.

f. Wings subhyaline, sometimes infuscated along the costa ; the abdomen with yellow |

fascie ; the head and thorax with red or cinereous hair. (Species 10-14.)

10. Elis plumipes.

Sphex plumipes, Drury, Ilustr. Exot. Ins. i. p. 104, t. 44. fig. 5°; Christ, Linn. Natur-Syst. Ins,

Hymen. t. 28. fig. 2.

Elis plumipes, Sauss. & Sichel, Cat. Sp. Gen. Scolia, p. 243°.

Scolia radula, Fabr. Syst. Ent. p. 355*; Ent. Syst. ii. p. 232° (nec Syst. Piez. p. 242).

Scolia quadricincta, Klug, in Weber & Mohr’s Beitr. i. p. 37°.

Scolia fossulana, Fabr. Syst. Piez. p. 242".

Colpa fossulana, Lep. de St.-Fargeau, Hist. Nat. Ins. Hymen. iii. p. 540°.

Elis fossulana, Sauss. Mélang. Hymén. p. 56°.

Scolia confluenta, Say, Western Quarterly Reporter, ii. p. 74°°; Amer. Ent. p. 68, t. 29. fig. 1";

Bost. Journ. Nat. Hist. i. p. 3647?;. Complete Writings, i. p. 164”, il. p. 749“.

Hab. Nortu America‘ > 10-14, New York 1, Pennsylvania? §, Carolina’ 5, Louisiana 3,

Illinois 3—Mexico, Amula, Tierra Colorada, and Dos Arroyos, all in Guerrero (H. H.

Smith), Jalisco (Schumann), Guadalajara, Cordova (Hége), Jalapa (fF. D. G.), Orizaba

(H. H. Smith & F. D.G.), Atoyac in Vera Cruz (H. H. Smith); Panama, Volcan de

Chiriqui 2500 to 4000 feet (Champion).—Soutu America, Amazons, Brazil 3,

I refer the specimens from Central and South America to 2. plumipes with some

232 HYMENOPTERA.

doubt, as they do not agree in two particulars with the descriptions of that species,

viz., the vertex has some punctures and the abdomen has only three yellow bands. The

head and thorax above are densely covered with long rufous hair, the pleure and

breast more sparsely clothed with long cinereous hair; the mesonotum is strongly

punctured at the sides, and more sparsely in the centre; the scutellum and post-

scutellum are closely and strongly punctured, except in the middle; the median

segment is much more closely and finely punctured above than the rest of the thorax.

The basal segment of the abdomen bears long cinereous hair; the second and third

segments at the apex above are fringed with pale golden, the other segments with

black, hair; the ventral segments are fringed with silvery hair. The legs are black,

thickly covered with silvery or golden hair. ‘The wings are fusco-violaceous, brilliantly

iridescent throughout, the costa and nervures deep black. The yellow abdominal bands

vary in shape, at least as regards the second and third: the first is usually entire, and

the second is the largest; the second and third may take the form of one large band

incised in the middle, or of two somewhat triangular separate marks.

In one specimen, from Tierra Colorada, the vertex is strongly punctured, except near

the ocelli; there is a yellow mark on either side of the pronotum, and the hair on the

thorax is fuscous, In another example, from Jalisco, there are two yellow marks on

the pronotum, a large mark, as well as a minute one, on the scutellum, and a yellow

line on the apical margin of the fourth abdominal segment; and the fifth segment is

fringed with pale fuscous, the sixth with deep golden, hair.

The species varies from 15-25 millim. in length.

11. Elis mexicana. (Tab. XII. fig. 14.)

Nigra, capite et thorace nigro et cinereo-hirtis ; abdominis fasciis 3 flavis ; alis fusco-violaceis. 2.

Long. 23-24 millim,

Hab. Mexico, Amula in Guerrero 6000 feet (H. H. Smith), Guadalajara in Jalisco

(Hoge). |

Head above the point of insertion of the antennz covered with long black, below it

with paler, hair; the vertex strongly and closely punctured behind and round the eyes,

more sparsely so in the middle; the clypeus strongly but sparsely punctured. The

pro- and mesonotum covered thickly with long black hair; the median segment and

the pleure bearing long cinereous hair. The mesonotum coarsely punctured, except

in the middle, where it is smooth and shining; the scutellum strongly punctured

laterally. The median segment very closely punctured throughout, the punctures

being much smaller than those on the mesonotum, the sides rounded. Abdomen at

the base, on the ventral surface, and to a less extent in the middle of the back, bearing

long grey hair; the apical segments with black hairs; the segments fringed at the

apex with black hairs. Legs black, covered with long cinereous hair; the spines on

ELIS. 233

the fore tarsi rufous. The basal abdominal segment has the apical half yellow, the

yellow being in the middle slightly produced and incised ; the second segment is entirely

yellow, except the external base and apex; the third segment may be almost entirely

yellow, or the yellow may be narrowed and incised in the middle. The wings are

uniformly fusco-violaceous, or they may be darker along the costa, the costa and the

nervures black. . |

This species is not unlike F. thoracica (Fabr.); but the yellow bands on the abdomen,

the strongly punctured vertex, and the very closely punctured median segment separate

it at once. From £. plumipes, the black hair on the head and thorax, the much more

strongly punctured vertex and thorax, and the uninterrupted large yellow band on the

second segment serve to distinguish it.

12. Elis trifasciata.

Tiphia trifasciata, Fabr. Ent. Syst. ii. p. 226°; Syst. Piez. p. 235°.

Scolia trifasciata, Klug, in Weber & Mohr’s Beitr. i. p. 32°; Burm. Abh. Nat. ges. Halle, i. 4,

p- 80‘; Smith, Cat. Hymen. Ins. iii. p. 108°.

Elis trifasciata, Sauss. Ann. Soc. Ent. Fr. 1858, p. 245°; Sauss. & Sichel, Cat. Sp. Gen. Scolia,

pp. 247, 310”,

Scolia radula, Fabr. Syst. Piez. p. 242°; Burm. Abh. Nat. ges. Halle, i. 4, p. 28”.

Colpa alexandri, Lep. de St.-Fargeau, Hist. Nat. Ins. Hymén. iii. p. 543”.

Hab. Nort America®? 8, South Carolina ®—Mexico, Northern Sonora (Morrison),

Omilteme 8000 feet, and Amula 6000 feet, both in Guerrero (ZH. H. Smith), Orizaba

(H. H. Smith & F. D. G), Temax in North Yucatan (Gaumer); Guaremana, San José

(Champion).—Soutn America®, Caracas’, Cayenne’, Amazons’, Brazil+®*°; ANTILLES,

Cuba’, Haiti’, Guadaloupe, Martinique °, St. Thomas, San Martin’.

Two specimens of what I cannot but regard as a variety of this species, notwithstanding

a very marked difference in the alar neuration, have been received from North Yucatan ;

both of them are, unfortunately, very much rubbed, but there is every appearance of the

head and thorax having been covered with fulvous pubescence as in typical E. trifas-

ciata. The remarkable point about them is that they have the neuration of Liacos,

that is to say, instead of the two recurrent nervures running parallel or nearly so as in

typical Elis, and not touching each other, the first recurrent instead of proceeding to

the cubital nervure does not touch it at all, but runs into the second recurrent nervure,

thus forming a closed petiolate discoidal cellule. Although, as stated, I have seen two

specimens with this type of neuration, yet 1 must regard it as an aberration and not

typical of the true Liacos, which is only known from the Oriental and Australian

zoological regions. Moreover, in one example the first recurrent nervure in the left

wing runs into the second, and in the right wing the second nervure runs into the first, _

quite close to the cubital nervure; and in another specimen the recurrent nervures in

BIOL. CENTR.-AMER., Hymenopt., Vol. IL., October 1893. 2 HH

234 HYMENOPTERA.

the right wing do not touch at all. In some typical specimens the recurrent nervures

approach each other nearer than they do in others.

In the two specimens mentioned above the head is without punctures; the meso-

notum is strongly and coarsely punctured all over; and the scutellum is hardly, the

median segment very finely, punctured. The basal abdominal segment has a broad

vellow band on the apex, with a black mark in the middle; the second segment

has an irregular yellow mark in its apex; the third segment has a straight yellow

uninterrupted band; and the two apical segments are densely covered with reddish-

fulvous hair. The tibie and tarsi are reddish. The wings are yellowish-hyaline, with

a yellowish-fuscous cloud along the fore margin.

Similar instances of difference in the alar neuration have been recorded (cf. Saussure

and Sichel, Cat. Sp. Gen. Scolia, p. 282), and they seem to lead to the conclusion that

too much reliance cannot be placed on the form of the discoidal cellule, or even the

cubital cellule, as an aid in generic differentiation.

In Z. trifasciata I find great variation in the sculpture of the mesonotum ; the depth

and strength of the puncturing depends on the freshness of the specimens—on the

amount of digging in the sand which the individuals have done.

13. Elis tricincta.

Tiphia tricincta, Fabr. Syst. Ent. p. 354'; Ent. Syst. ii. p. 227°; Syst. Piez. p. 235°.

Scolia tricincta, Burm. Abh. Nat. ges. Halle, i. 4, p. 30 *.

Elis tricincta, Sauss. Ann. Soc. Ent. Fr. 1858, p. 246°; Sauss. & Sichel, Cat. Sp. Gen. Scolia,

p. 248°.

Hab. Mexico *, Omilteme 8000 feet, Acapulco, Amula 6000 feet, Dos Arroyos 1000

feet, all in Guerrero (H. H. Smith), Atoyac in Vera Cruz (Schumann), Orizaba (FP. D.G.

& H. H. Smith), Omealca near Orizaba (I. Trujillo), North Yucatan (Gauwmer) ;

GuatemaLa, Zapote, San Gerénimo (Champion) ; Nicaragua, Chontales (Janson); Costa

Rica, Caché (Rogers).—AntiLuEs + ®, Cuba ®, Haiti %, St. Thomas °.

The yellow abdominal marks vary in shape: in some examples they are entire, more

or less incised in the middle; in others they are divided into two. In one example

(from Orizaba) there is an interrupted line on the fourth segment, the second and third

ventral segments having also two yellow lines. The wings also vary in colour; usually

they are hyaline or subhyaline, with the apex more or less infuscated, but some examples

have them uniformly fusco-violaceous. In most of the examples I have seen the femora

are black, and the tibiee and tarsi rufous.

14, Elis limosa.

Scolia limosa, Burm. Abh. Nat. ges. Halle, i. 4, p. 28°.

Elis limosa, Sauss. Ann. Soc. Ent. Fr. 1858, p. 246°; Sauss. & Sichel, Cat. Sp. Gen. Scolia, p. 230°.

Hab. Mexico! 2 8,

EPOMIDIOPTERON. 235

EPOMIDIOPTERON.

Epomidiopteron, de Romand, Ann. Soc. Ent. Fr. 1835, p. 653; Saussure & Sichel, Cat. Sp. Gen.

Scolia, p. 264.

This is a genus of small extent, and purely a neotropical one.

1. Epomidiopteron sumichrasti.

Epomidiopteron sumichrasti, Sichel, in Sauss. & Sichel’s Cat. Sp. Gen. Scolia, p. 267°.

Hab. Mexico },

2. Epomidiopteron aureo-hirtum. (Tab. XII. fig. 8.)

Nigrum, punctatum, aureo-hirtum ; alis flavo-hyalinis. 9°.

Long. 11 millim.

Hab. Guatemaua, San Gerénimo (Champion).

Head coarsely punctured, densely covered with long fulvous hair; the clypeus finely

punctured and covered with fulvous hair; the mandibles reddish in the middle. The

scape of the antenne strongly punctured, bearing long fulvous hair, and rufous at the

apex; the flagellum thick, covered with a fulvous pubescence. The pro- and mesothorax

densely covered with fulvous hair. The pronotum apparently punctured, but the punc-

tuation cannot be well seen from the thick hair covering it; the propleure striolate

throughout; the mesonotum with large, widely separated punctures; the lateral

depression wide and deep; the scutellum and postscutellum punctured; the median

segment in the centre coarsely shagreened, the sides irregularly reticulate, the central

keel straight, the lateral keels oblique, becoming united at the apex to the central one.

The mesopleure are coarsely punctured; the metapleure striolate. The abdomen is

closely punctured throughout ; the segments at the apex thickly fringed with golden hair ;

the pygidium closely punctured, reddish, the base covered thickly with long fulvous hair.

The legs thickly covered with silvery hair, the hair on the outer side of the hind tibie

golden; the apices of the tarsi rufous, the calcaria white. The third cubital cellule is

longer than the first and second cellules united; the first recurrent nervure is received

about the same distance from the base that the second is from the apex of the cellule.

Tegule large, dull rufous.

This species is evidently very near the preceding, but differs from it in having the

tegule large, and the third cubital cellule longer than the first and second cellules

united (in E. swmichrasti it is apparently only the length of the second). The relative

lengths of the cellules are not mentioned by Sichel; but from his remarks (Cat. Spec.

Gen. Scolia, p. 264) I conclude that his figure (t. 1. fig. 8) of the wing is applicable to

E. julia and E. sumichrasti, in which case the neuration is different from that of our

species. Sichel (op. cit. p. 269) suggests that E. sumichraste should form the type of a

new genus or subgenus, for which he proposes the name Paratiphia. Not having an

2 HH 2

236 HYMENOPTERA.

example of £. julii for comparison, I am unable to offer an opinion as to this. The

base of the abdomen is truncated, and is keeled at the top, and formed as it is in some

species of Odynerus. The claws are sub-bifid. The chief difference between Paratiphia

and Tiphia is that the former has three transverse cubital nervures; but the first is not

complete, it being broken off before reaching the cubital nervure. Paratiphia has the

radial nervure open at the apex as in Tiphia.

\ ¢ e e

“ 3. Epomidiopteron elegantulum.

Epomidiopteron elegantulum, Smith, Journ. Ent. 1. p. 79°.

Hab. Mexico (Mus. Brit.+).

‘. 4, Epomidiopteron nigrum.

Nigrum, fulvo-hirtum ; alis fere hyalinis. 9.

Long. 11 millim.

Hab. Mexico, Xucumanatlan in Guerrero 7000 feet (H. H. Smith).

Head coarsely punctured, the punctures confluent, covered thickly with long, pale

fulvous hair; the clypeus not projecting in the middle, the apex rounded, covered with

fulvous hair; the labrum rounded at the apex, projecting; the mandibles black,

sparsely covered in the middle with fulvous hair. The antenne short and thick, the

scape punctured, and bearing long white hair; the flagellum covered with a pale

microscopic down; the third joint a little shorter than the fourth. The pro- and

mesonotum thickly covered with fulvous pubescence, coarsely and uniformly punctured,

except an impunctate space in the centre of the mesonotum; the pro- and metapleure

striolate; the mesopleure strongly punctured, and covered with long, pale fulvous

hair. The median segment finely rugose; the top striolate at the sides at the apex ;

the central keel sinuate, the lateral keels approximating at the apex. Abdomen at the

base finely, towards the apex more strongly and closely, punctured, shining; the suture

at the base of the second segment bulging out in the middle; the basal segment

truncated behind, the keel on the top slight but distinct; the apical segment densely

covered with long, fulvous hair, apparently strongly punctured ; the ventral surface

punctured, the segments at the apex fringed with long, pale fulvous hair. The tibie

and tarsi densely covered with white pubescence, the tibize on the outer side with some

stout black spines. The third cubital cellule at the top longer than at the bottom,

shorter than the first and second cellules united; the first recurrent nervure received

shortly in front of the middle, the second nervure in the apical fourth of the cellule ;

the stigma black.

5. Epomidiopteron smithi.,

Long. 9 millim.

Hab. Muxico, Acapulco in Guerrero (H. H. Smith).

EPOMIDIOPTERON. 237

Head covered with large, deep, non-confluent punctures; very sparsely and shortly

haired; the ocelli in pits. The antenne short and thick; the scape beneath with some

long white hairs; the flagellum covered with a microscopic pubescence. The pronotum

with large, deep punctures, except at the apex, which is, as usual, impunctate; the

mesonotum with a few large and small punctures; the lateral furrows deep; the sides

with a row of large punctures. The scutellum with a few punctures; the postscutellum

more closely and finely punctured. Median segment strongly shagreened, at the apex

rather strongly striolate; the middle keel not reaching the apex; the propleure

punctured throughout; the mesopleuree moderately strongly punctured. Abdomen

with the basal segment more strongly punctured than the others; the second segment

with scattered shallow punctures, the third with fewer punctures, the fourth finely

punctured at the apex, the fifth more strongly punctured at the apical half, and the

sixth rugosely punctured, reddish at the apex; the third and following segments

fringed at the sides with long white hairs, the fifth also at the apex; the ventral

segments punctured and fringed with whitish hair. The tibie and tarsi fringed with

glistening-white hair; the tibial spines black; the calcaria white. The first recurrent

nervure is received in the basal third of the cellule, and is elbowed near the top, the

second received shortly beyond the middle ; the third cubital cellule at the top longer,

at the bottom shorter, than the first and second cellules united.

Nearly related to L. nigrum; but that species may be known from it by the head

and thorax being densely pilose, the pronotum having the punctures smaller and closer,

its apex, too, being punctured, the mesonotum more thickly punctured, the pygidium

densely covered with golden hair, and the hair on the tibie fulvous, not glistening

white.

6. Epomidiopteron canaliculatum.

igram ; abdominis apice dense fulvo-hirto ; alis fulvo-hyalinis. 9°.

Long. 8 millim.

Hab. Mexico, Acapulco in Guerrero (H. H. Smith).

Head densely punctured, the punctures closely set, but not confluent; the clypeus

finely punctured; the labrum rounded, carinate in the middle, dull piceous, fringed

with fulvous hair; the mandibles ferruginous, black at the base and before the apex ;

the front, vertex, and occiput bearing fuscous hair. The scape of the antennz punc-

tured, bearing a few white hairs; the flagellum covered with a fuscous down ; the basal

joints projecting beneath. The basal half of the pronotum coarsely punctured; the

mesonotum strongly punctured, sparsely in the middle, the sides next the tegule

impunctate. Scutellum sparsely, the postscutellum more finely and closely punctured.

Median segment coarsely alutaceous; the apex depressed and crenulated; along the

sides is a sinuated, crenulated channel ; the lateral keels curved, the central keel straight

238 HYMENOPTERA. |

and thicker than them. The propleure striolate, the top indistinctly punctured; the

mesopleure strongly punctured, sparsely covered (as is also the breast) with long white

hair. The abdomen covered with shallow punctures; the sides of the second, third,

and fourth segments, and the fifth entirely, fringed with pale fulvous hair; the

pygidium densely covered with long fulvous hair at the base, the apex reddish, finely

punctured; the ventral surface punctured, the segments fringed with pale fulvous hair ;

the hypopygium fringed at the sides with short thick hairs.

The coxee and femora sparsely, the tibie and tarsi densely, covered with long silvery

hair, the tibice with golden hair on the outside; the hind coxe punctured ; the calcaria,

tarsal spines, and claws reddish; on the hinder femora in the centre is a short tooth.

The first recurrent nervure is received before the middle, the second in the apical |

third; the third cubital cellule at the top is longer, at the bottom shorter, than the

first and second cellules united.

This species may be easily known from the others here described by the sinuated

channel on the median segment, and by the toothed hinder femora.

7. Epomidiopteron rufitarse.

Nigrum, clypeo albo; flagello antennarum, tibiis anticis, tarsisque rufis; alis fusco-hyalinis, stigmate fusco. d¢.

Long. 7 millim.

Hab. Mexico, Temax in North Yucatan (Gaumer).

Head closely covered with more or less confluent punctures, sparsely clothed with

longish fuscous hair; the clypeus finely punctured, thickly covered with white hair;

mandibles ferruginous, black at the base and apex. Pronotum closely punctured,

except at the extreme apex, which is margined with white; the base at the top keeled ;

the mesonotum and scutellum with the punctures larger than on the pronotum ; the

median segment with a keel down the middle, and a transverse keel across the middle,

the latter dividing the segment into two parts, the apical part strongly striolated, the basal

part aciculated, and with four longitudinal keels. ‘The pro- and metapleure striolated,

the former punctured at the top; the mesopleure strongly punctured. Abdomen

punctured, at the base strongly, the punctuation becoming weaker towards the apex ;

the sides of the dorsal and the whole of the ventral segments fringed with fulvous hair ;

the pygidium punctured, reddish at the apex, the centre keeled; the hypopygium not

keeled. The tibie and tarsi densely, the femora sparsely, covered with silvery hair ;

the calcaria pale reddish. The third cubital cellule at the top longer, at the bottom

distinctly shorter, than the first and second cellules united; the second recurrent

nervure received in the middle of the cellule.

I cannot with any certainty unite the male from which the above description is taken

to any female Epomidiopteron known to me. Sichel describes a variety of the male of

EPOMIDIOPTERON.—TIPHIA. 239

E. sumichrasti with the tarsi and fore tibie reddish; but in other respects it does not

agree with the male here described.

8. Epomidiopteron saussurei.

Nigrum, nitidum ; alis fulvo-hyalinis, nervis testaceis, costa nigra. @.

Long. 5-6 millim.

Hab. Mexico, Tierra Colorada in Guerrero 2000 feet (H. H. Smith).

Head shining, sparsely haired, covered with large, widely separated punctures. The

scape of the antenne shining, almost glabrous; the flagellum with a fuscous pile. The

top of the pronotum at the base transversely carinate; the base with large, widely

separated punctures; the apex impunctate. The mesonotum and scutellum with large

scattered punctures. Median segment finely rugose; the apex crenulated; the trian-

gular area with some irregular strie at the base; the central keel does not reach the

apex. The pro-and metapleure deeply excavated; the former finely, closely striolated

at the bottom, the latter more strongly striolated at the apex. Abdomen very shining,

bearing very shallow, fine, widely separated punctures; the sides, the fifth segment,

and the ventral segments fringed with white hairs; the pygidium at the base coarsely,

at the apex finely, punctured and reddish, the basal part with long fulvous hair. The

tibiee and tarsi thickly fringed with silvery hair; the tarsal spines and the apical joints

of the tarsi reddish; the calcaria white. The third cubital cellule at the top and

bottom shorter than the first and second cellules united; the second recurrent nervure

received shortly before the apical third of the cellule.

This little species differs from the others here described in having the third cubital

cellule at the top and bottom shorter than the first and second cellules united.

TIPHIA.

Tiphia, Fabricius, Ent. Syst. 11. p. 223 (1793) (part.).

Comparatively few species of this genus have been recorded from the Nearctic or

Neotropical regions. The species are closely allied, and show no great difference in

structure and hardly any in coloration, being all black, with the tibiz and tarsi and the

apical abdominal segments clothed with white or fulvous hair. Two of our species

approximate to Paratiphia in having the basal segment of the abdomen carinate; and

another has the first transverse cubital nervure present, but it is not quite so long as

in the typical Paratiphia. None of these species, however, have the area on the

median segment triangular. .

240 HYMENOPTERA.

A. The basal segment of the abdomen not carinate. (Species 1-9.)

i. Fore wings with two transverse cubital nervures. (Species 1-8.)

1. Tiphia elegans. (Tab. XII. fig. 16.)

Nigra, nitida, sparse punctata; alis flavis. 9 et ¢.

Long. 18 millim.

Hab. Mexico, Omilteme 8000 feet, Chilpancingo 4600 feet, both in Guerrero

(H. H. Smith).

Head shining, very sparsely covered with long fuscous hairs; bearing on all parts

large, widely separated punctures, which become smaller and less numerous behind the

ocelli; clypeus finely punctured and fringed with long fulvous hair; the apical three-

fourths of the mandibles piceous. The scape of the antenne sparsely punctured, and

fringed with long fulvous hair; the flagellum stout, densely covered with a microscopic

fulvous pile and at the base with some hairs; the third and fourth joints subequal.

‘The pronotum bearing some long pale fulvous hairs; the apex impunctate, the other

" parts (except the vertical base) with distinctly separated punctures; the base impunctate

and with a distinct border; the propleure, except at the top, obliquely striated. The

mesonotum shining, very sparsely haired, the base impunctate, the sides with a few large

punctures; the centre depressed, closely punctured, a deep furrow at the sides. The

scutellum with scattered punctures, the middle impunctate. The median segment

shagreened ; the central line thicker than the two lateral lines, and dilated towards the

apex, the lateral lines curved at the base; at the sides there are two keels running to

the spiracles; the apex is sharply oblique. The mesopleure are punctured ; the meta-

pleure above strongly, obliquely punctured. ‘The breast is covered with long white

hair. The abdomen is shining; the second segment at the base crenulated; the third

to the fifth segments obscurely punctured at the apex and fringed with long pale hair,

which becomes longer towards the apex; the pygidium at the base irregularly rugose,

the apex rufous, the base covered with pale hair; the ventral segments punctured at

the apex and fringed with pale hair. Legs: the femora and coxe sparsely covered

with long white hair, the tibie and tarsi more densely clothed with shorter pale silvery

hair; the tarsal spines and the claws rufous; the calcaria dull rufous; the coxe punc-

tured. The first recurrent nervure is received in the middle, the second in the apical

fourth of the cellule.

The male is similarly coloured to the female. It has the head much more strongly

and coarsely punctured; the oral region more densely covered with long white hair ;

the clypeus projecting squarely in the middle, where it is transverse, and strongly

punctured ; the antenne as long as the thorax, thick, the scape closely punctured and

covered with long white hair; the flagellum bearing a very fine microscopic pile, the third

and fourth joints subequal; the punctuation on the pronotum extending quite close to

TIPHIA. 241

its apex, that on the mesonotum closer and uniform, this being also the case with the

scutellum and postscutellum; the median segment more coarsely shagreened; the

propleure without striations; the metapleure at the base more deeply excavated, the

apex much less strongly striated; the basal segments of the abdomen slightly, the

_ other segments more strongly punctured, the punctuation becoming stronger and

coarser towards the apex; the hypopygium reddish at the base and apex, the base

impunctate, the remaining portion strongly punctured; and the ventral segments

much more strongly punctured. As in the female, the central furrow on the median

_ segment is thickened. The alar stigma is black. Length 13-14 millim.

2. Tiphia guatemalensis.

Nigra, capite et thorace dense albo-hirtis ; alis fusco-hyalinis.

Long. 16 millim.

Hab. Guatemaa, Zapote (Champion).

Head very strongly punctured, densely covered with long fuscous hair; the clypeus

punctured at the base, the middle not projecting. The scape of the antenne punctured,

covered with long pale fulvous hair; the flagellum densely covered with a fuscous

pile, the basal joints projecting beneath. The pronotum strongly punctured at the

base, thickly covered with pale fulvous hair, the sides shagreened, finely striated

beneath; the mesonotum strongly punctured, except at the sides, covered with long

fulvous hair; the scutellum and postscutellum with scattered punctures; the median

segment shagreened ; the mesopleure with not very strong punctures, the metapleure

strongly striolate. The abdomen not very shining; the basal segments sparsely punc-

tured, the apical ones closely punctured and fringed with long pale hairs; the pygidium

strongly punctured, densely covered with long pale hair; the ventral segments punctured

and haired like the dorsal segments. The legs covered with long white hair; the

tarsal spines reddish, the calcaria piceous. The first recurrent nervure is received

shortly beyond the middle, the second close to the apical fourth of the cellule.

This species is closely related to 7. azteca, but it is larger; the wings are much

lighter in tint; the first recurrent nervure is received further from the second trans-

verse cubital; the middle of the clypeus does not project from the sides, but is continuous

with them; and the mesonotum is strongly punctured.

3. Tiphia azteca.

Nigra, alis fuscis. 92.

Long. 15 millim.

Hab. Mexico, Orizaba (H. H. Smith & F. D. G.).

Head strongly punctured all over, except in front of the ocelli, where there is an

impunctate space; sparsely covered with moderately long pale hair; the clypeus with

BIOL. CENTR.-AMER., Hymenopt., Vol. II., October 1893. 2 II

242 HYMENOPTERA.

the middle broadly projecting in the centre, the apex transverse, finely punctured,

except at the extreme base, fringed at the sides and at the middle with long fulvous

hair; the mandibles rufous, black at the base and apex, and fringed with long fulvous

hair. The antenne have the scape punctured and covered with long white hair, the

flagellum, especially on the lower side, with a pale pubescence. The pronotum with

large punctures at the base, densely covered (especially at the base) with long pale hair ;

the pleure obliquely striated beneath: the upper part impunctate. The mesonotum

with the middle strongly punctured, the sides with a pair of punctures at the base and

apex ; the apex with pale fulvous hair, this being also the case with the scutellum,

which bears scattered punctures, except in the middle; the postscutellum with

scattered punctures. The median segment shining, impunctate, the apex alutaceous ;

the central keel straight, the lateral keels curved; the mesopleure rather strongly

punctured, the metapleure strongly obliquely striolate. The abdomen shining; the

basal segment sparsely, the apical segment more strongly and closely, punctured; the

_ furrow at the base of the second segment deep, crenulated at the sides; the second

and following segment fringed with long pale hair; the hypopygium coarsely punc-

tured, thickly covered with long white hair, the extreme apex rufous; the ventral

surface punctured and haired like the dorsal surface. The legs are thickly covered

with long silvery hair; the spines on the apices of the tarsal joints are rufous; the

three spines on the metatarsus are black. The wings have some hyaline lines and

spots; the first recurrent nervure is received beyond the middle, the second close to

the apex of the cellule.

4, Tiphia montezuma.

Long. @ 14, ¢ 12 millim.

Hab. Mexico, Navarrete, Tepic (Schumann), Chilpancingo in Guerrero 4600 feet

(H. H. Smith).

Head strongly punctured, the punctures not confluent; the oral region and the

cheeks over the antenne less strongly punctured ; the ocelli in deep pits; covered

with long pale fulvous hair ; the clypeus fringed with golden hair, the apex depressed,

impunctate ; the mandibles ferruginous, black at the base and apex, fringed with long

golden hair. ‘The scape of the antenne with large punctures and covered with long

golden hair, shining; the flagellum covered with a microscopic pubescence, fuscous

beneath, the third and fourth joints subequal. The pronotum strongly punctured,

except a semicircular space at the apex, which is smooth and glabrous, the punctured

part being covered with longish hair; the oblique base is finely punctured and pilose.

The mesonotum has large, scattered, widely separated punctures and a scattered

pubescence. The base of the scutellum is smooth and glabrous, the apex punctured,

and bearing long pale fulvous hairs; there runs down the middle of the punctured

TIPHIA. 243

part an impunctate band, which appears to be slightly raised; the postscutellum is

punctured. The median segment is shining, slightly shagreened; the lateral keels

distinct, slightly converging towards the apex; there are two central keels, which do

not reach the apical keel, the space at the apex bounded by them being depressed ;

the apex is excavated. The propleure shining, the lower half obliquely striolated ;

the mesopleure closely punctured, the punctures about half the size of those on the

mesonotum, thickly covered with fuscous hairs; the metapleure deeply excavated,

shining, impunctate at the base, the apex obliquely striolate. The basal segment of

the abdomen broader than long, with scattered punctures, the base bearing long

fuscous hair; the second and third segments with scattered punctures, and with a

continuous row of them at the apex; the fourth segment with more punctures and

with a broader and deeper row at the apex; the fifth segment strongly punctured

throughout; the sixth segment at the base coarsely punctured, the apex reddish, very

finely and closely punctured; the third, fourth, and fifth segments at the sides bear

long white hair, the fifth more thickly haired than the others; the sixth is thickly

covered with long pale fuscous hair; the ventral segments are punctured from the.

base of the second and covered with long pale hairs, especially at the apices. The

tibiee and tarsi are thickly covered with silvery hair; the thick spines on the top of

the hinder tibiz are reddish, this being also the case with the tarsal spines. The

wings are fusco-hyaline, the stigma black, the nervures brownish ; the first recurrent

nervure is received shortly beyond the middle, the second in the apical third of the

cellule ; the second nervure is sinuate and has a short branch below the middle.

This species approaches T. guatemalensis ; but the punctuation of the head and

pronotum is stronger ; the ocelli are in pits; the scutellum is only punctured at the

apex ; the median segment is shorter compared to the mesothorax, and it wants the

central keel; the metapleure are more deeply excavated; the abdomen is shorter

compared to the thorax, much more shining, the suture on the second segment not

crenulated ; and the spines on the hind tibie are reddish.

5. Tiphia trichiosoma.

Long. 13 millim.

Hab. Guatemaa, San Gerdénimo (Champion).

Head densely covered with long fuscous hair and large, distinctly separated pune-

tures; the clypeus finely punctured, and fringed with golden hair; the mandibles

ferruginous and bearing some long fulvous hair. The scape of the antenne impunctate,

covered with long pale hair; the basal joints of the flagellum covered with short

fuscous hair, the other joints with a microscopic pile. ‘The pro- and mesonotum and

the mesopleure densely covered with fuscous hair; the pronotum nearly as strongly

2 12

244 HYMENOPTERA.

punctured as the head, except the apex, which is shining and impunctate; the meso-

notum with large widely separated punctures; the scutellum smooth, the apex and

sides with large punctures; the postscutellum strongly punctured. The median seg-

ment shagreened, the sides of the apical part punctured; the lateral keels slightly

curved, converging a little towards the apex; the middle keel straight, thickened at the

base ; the lower part of the propleure and the apical part of the metapleure striolate.

The dorsum of the abdomen slightly punctured, the punctuation becoming closer and

stronger as the apex is reached; the pygidium with the basal three-fourths coarsely,

the apex very finely and closely, punctured, the sides irregularly striolate; the second

and following segments fringed with long grey hair; the ventral surface punctured,

the segments thickly fringed with long grey hairs. The tibie and tarsi thickly covered

with silvery hair; the tibial spines testaceous at the apex; the tarsal spines ferru-

ginous ; on the basal joint of the tarsi are two stout ferruginous spines. Wings fusco-

hyaline, the nervures and stigma blackish ; the second cubital cellule at the top a

little longer than the first; the first recurrent nervure received shortly beyond the

middle, the second in the apical fourth of the cellule.

May be known from 7. montezuma by its much more pilose body, by the more

strongly punctured abdomen, and by the hind tarsi being exactly twice the length of

the tibie, while 7. montezuma has them at least 1 millim. longer than that.

6. Tiphia clypeata.

Tiphia clypeata, Smith, Descr. of New Species of Hymen. p. 187 (1879) °.

Hab. Mexico, Oaxaca !.

7. Tiphia subspinosa.

Tiphia subspinosa, Smith, Descr. of New Species of Hymen. p. 187".

Hab. Mexico 1.

8. Tiphia intricata.

Tiphia intricata, Smith, Descr. of New Species of Hymen. p. 188'.

Hab. Souts Mexico, Eastern slope of the mountains and Oaxaca}.

li. Fore wings with three transverse cubital nervures, the first abbreviated. (Species 9.)

9. Tiphia gaumeri.

Long. 9 millim.

Hab. Mexico, Temax in North Yucatan (Gaumer).

Head shining, bearing moderately large, widely separated punctures ; the cheeks

and the clypeus with long fulvous hair, the vertex almost glabrous; the middle of the

TIPHIA. 245

clypeus slightly projecting, the projection impunctate, shining, and depressed; the

mandibles ferruginous, black at the base and apex. Pronotum with the basal half

with large, separated punctures ; the apical half impunctate. The mesonotum with a

few scattered punctures, the sides impunctate. Scutellum with large punctures at the

sides and apex, and some smaller ones down the centre; postscutellum sparsely punc-

tured. Median segment shining, impunctate ; the sides of the apical slope shagreened ;

the central furrow thickened. The pro- and metapleure deeply excavated, the former

at the bottom and the latter at the apex striolated; the mesopleure punctured and

sparsely covered with white hair. Abdomen with scattered punctures, which become

stronger towards the apex; the basal segment with a keel at the apex; the suture on

the second segment wide and deep, crenulated at the sides; the sides and the apices of

the fourth and fifth segments with long whitish hair; the pygidium longitudinally

punctured, the apex reddish, covered with long pale hair; the ventral segments closely

punctured, fringed with long pale hair. ‘The tibie on the outer-side and the tarsi

covered with glistening white hair; the tibial spines black; the calcaria and the tarsal

spines rufous; the metatarsus with two stout black spines in the middle. Wings with

the nervures fuscous; the first recurrent nervure received in the middle, the second

shortly beyond the middle of the cellule; from the base of the radial nervure issues a

short nervure, as in Epomidiopteron, but it is not so long; the costal cellule is pure

hyaline, and there is a hyaline cloud in the first cubital cellule.

Characteristic of this species is the broken first transverse cubital nervure. The

abdomen andthe keels of the median segment are formed as in Tiphia.

B. The basal segment of the abdomen carinate on the top at the base.

(Species 10 and 11.)

10. Tiphia carinata.

Long. 12 millim.

Hab. Mexico, Chilpancingo 4600 feet, Tierra Colorada 2000 feet, both in Guerrero

(Hi. H. Smith).

Head rather strongly punctured, the punctures not confluent; the clypeus less

strongly punctured ; the front ocellus in a pit; the hair very sparse and short. The

scape of the antenne with large punctures, the lower side with long pale fulvous hair ;

the flagellum densely covered with pale fulvous pubescence. The pronotum strongly

punctured, except a broad semicircular band at the apex; the centre of the meso-

notum strongly punctured; the scutellum with a row of large punctures round the

edges; the postscutellum less strongly punctured than the pronotum; the median

segment shagreened, the apex on either side of the keels crenulated, the lateral keels

straight, slightly converging towards the apex, the central keel irregular. The pro-

pleure with some punctures in front, the bottom striolate ; the mesopleure strongly

246 HYMENOPTERA.

punctured, sparsely haired; the metapleure strongly striolate. The first segment of

the abdomen at the base semiperpendicular, at the top carinate; the segments punc-

tured more densely towards the apex, and fringed with pale fulvous hair; the pygidium

coarsely punctured, the edges fringed with pale fulvous hair; the ventral surface

rather strongly punctured, the segments fringed with pale fulvous hair. ‘The tibie and -

tarsi covered with silvery hair; the femora stout, dilated, punctured in front and with

pale hairs, behind shining, glabrous; the fore tarsi short, thick, the spines reddish,

the base of the metatarsus incised ; the long spur of the fore tibie cleft at the apex.

The second cubital cellule at the top longer than the first ; the first recurrent nervure

sinuate, received shortly beyond the middle, the second nearly in the middle of the

cellule.

The form of the first abdominal segment is quite as in Hpomidiopteron, and the

species may really belong to that genus; but, on the other hand, the male has not the

clypeus white, nor the third cubital cellule narrowed towards the radial and pointed

towards the apex; nor in either sex is the enclosed space on the median segment

triangular.

The male has the head and thorax more pilose ; the clypeus projecting in the middle

and fringed with long white hair; the smooth space on the apex of the pronotum

much smaller; the mesonotum uniformly punctured throughout; the punctuation of

the abdomen not so close; the hair on the apices of the segments much sparser; the

first segment longer than broad, narrow at the base, dilated and raised at the apex;

the second segment with a deep crenulated suture at the base; the femora not

dilated ; the tibize and tarsi, and the femora to a Jess extent, covered with white hair ;

the hind tibie with the edges serrulate ; the fore tarsi incised at the base (as in the

female); and the calcaria bifid at the apex. The wings are as in the female; the

second transverse cubital nervure is faint, almost obliterated in the middle; the stigma

is black.

T. carinata may be known from 7. trichiosoma by the body not being densely pilose ;

the pygidium coarsely punctured throughout; the metatarsus, instead of having only

two longish ferruginous spines, has, apart from the apical one, four shorter, thicker

black ones; the second recurrent nervure received in the middle of the cellule; the

fore metatarsus incised ; and the first abdominal segment keeled at the top.

11. Tiphia rugosa.

Long. fere 15 millim.

Hab. Mexico, Venta de Zopilote in Guerrero 2800 feet (Smith).

Head covered with large, deep, distinctly separated punctures; sparsely covered

with long white hair; the front ocellus in a pit, and behind it on either side is an

oblique row of five or six confluent punctures ; the mandible piceous in the middle ;

TIPHIA.—MYZINE. 247

the scape of the antenne punctured, beneath bearing long white hair; the flagellum

with a fuscous pubescence. The pronotum very coarsely punctured, except at the

apex, the punctured part with long pale fulvous hair. The mesonotum with coarse,

large, mostly confluent punctures; the sides inside the suture with eight large punc-

tures, outside it impunctate, except a row of punctures close to the suture. The

scutellum bordered with a furrow, and with some large punctures at the base and down

the middle. Median segment irregularly shagreened and reticulated; there are four

keels, the lateral ones converging distinctly towards the apex, the central ones irregular

and converging at the apex; the sides of the apical part are irregularly reticulated.

The propleuree with the lower half, the metapleure with the apical half striolate; the

mesopleure not very strongly punctured ; the breast sparsely covered with long white

hair. Abdomen strongly punctured throughout; the basal segment has an oblique

‘slope, and at the top is a keel which projects in the middle, the part in front of it

being crenulated ; the suture on the second segment is wide and deep; the third and

following segments are white at the apex and fringed with golden-fulvous hair; the

pygidium is coarsely punctured, covered with golden hair, which is especially thick at

the sides; the second ventral segment with the punctures larger and more widely

separated than the others. The tibie and tarsi are densely covered with silvery hair:

the metatarsus with longer hair than usual, and provided with three long spines, reddish

at the apex; the calcaria, tarsal spines, and the front tarsi reddish. ‘The second

cubital cellule at the top and bottom shorter than the first, narrowed at the top; the

first and second recurrent nervures received shortly beyond the middle of the cellule ;

the nervures fuscous; the stigma deep black.

This species agrees with 7’. carinata in having the basal abdominal segment keeled ;

but it is a larger insect, with the punctuation very much stronger; the apex of the

front tarsal spur not cleft and longer; the fore tarsi red; the hind spurs reddish (not

black); the metatarsus with only four (not five) spines; the median segment with four

keels, and more strongly reticulated; and the abdomen shorter (compared to the

thorax), much more strongly punctured, with the segments white at the apex.

MYZINE.

Myzine, Latreille, Hist. Nat. des Crust. et Ins. xiii. p. 269 (1805) ; Gen. Crust. et Ins. iv. p. 112.

Plesia, Jurine, Nouv. Méthode de class. les Hymén. p. 150 (1807).

This is a genus of small extent, but of world-wide distribution. The species are not

always easy to identify, on account of their great similarity and from their coloration

and markings showing great variability. The males, again, from their differing so

much from the females, are not, without direct observation, readily allocated to their

proper partners of the other sex.

In all the females of the species from our region the pro- and metapleure are

obliquely striated, so I have not mentioned this in describing them.

248 HYMENOPTERA.

i. Body marked with yellow. (Species 1-14.)

a. Legs reddish or yellow. (Species 1-4. )

A i omen f atk . vin ¢ P38 ‘ * D “3 “Ss \ i % in Ly ed Pua

1. Myzine agilis. AT a. Taek Nein ty 2 OO 10 |

Myzine agilis, Smith, Descr. of New Species of Hymen. p. 182 (6 sy . i eos

4 S

os,

Hab. Nicaragua },

This species may be known from all I have described or enumerated, except

M. fulviceps, M. pulchriceps, and, M. sexcincta, by having the legs ferruginous ; but it

differs from M. fulviceps in having the head black, with yellow markings.

2. Myzine fulviceps. (Tab. XII. fig. 20.)

Nigra, capite fulvo, nigro- et flavo-maculato, tibiis tarsisque ferrugineis, abdomine flavo-balteato ; alis flavo-

hyalinis. ©.

Long. 20 millim.

Hab. Mexico, Acapulco, Tierra Colorada, and Chilpancingo in Guerrero (H. Z.

Smith); Guaremana, San Gerénimo (Champion).

Head yellow, more or less tinged with ferruginous on the vertex, densely covered

with pale fulvous hair; a large black mark on the vertex, strongly punctured; the

ocelli in pits; the clypeus bluntly carinate ; the mandibles ferruginous, black at the

apex, and at the base bearing long fulvous hair. Antenne with the first and second

joints yellow; the scape covered with long pale hair; the flagellum dull ferruginous,

covered with a pale microscopic pile, the third joint shorter than the fourth. The

thorax has the pleure and breast black ; the pronotum has the apical half yellow, the

basal half black; the mesonotum is black, yellow in the centre and along the tegule ;

the scutellum and postscutellum are yellow; the median segment is black, the sides, a

wedge-shaped mark at the base in the middle, and a small mark in the centre at the

apex yellow. The yellow part of the pronotum is thickly covered with long fulvous

hair; the hair on the mesonotum is much sparser; the median segment without hair,

but covered with a white down ; the mesopleure and breast are covered with long white

hair, the former having a large yellow mark. The apical half of the pronotum is

densely punctured, the black basal part depressed towards the head; its base rather

strongly punctured, the apex impunctate. The base of the mesonotum is finely and

closely punctured ; the sides smooth and with a few large punctures; the central part

with some large punctures, the spaces between them being finely and closely punctured ;

the scutellum coarsely punctured ; the postscutellum with a few large punctures; the

median segment impunctate, in the middle with a few transverse striations, its apex

oblique. The propleure are finely and closely striated ; the metapleure are obliquely

striated, with the striations more widely apart than they are on the propleure; the

mesopleure coarsely punctured. Legs: the coxe, the trochanters, and the base of the

MYZINE. 249

four anterior femora black, the hinder coxe marked with yellow; the femora yellow,

suffused with rufous; the tibie and tarsi rufous. The hair on the legs long and

white; the calearia white; the hind femora shining and impunctate. The abdomen

above shining, the black with bluish reflections; there is on the basal segment a broad

yellow band ; on the second segment are two large yellow marks, and on the third and

fourth a broad yellow band incised in the middle at the apex; the fifth segment has an

unbroken yellow band; the pygidium is yellow, rufous at the apex, and strongly

longitudinally striated; on the ventral surface there are two yellow marks on the first,

second, and third segments, the marks becoming successively smaller; the segments

above and beneath are punctured, but not strongly; the apical ventral segment is

smooth, impunctate, except at the apex, which bears some large punctures; the ventral

surface and the sides are sparsely covered with long white hair. Wings yellowish-

hyaline, a broad fuscous band along the apex; the costa and stigma ferruginous, the

nervures pale testaceous.

A variety from Guatemala has the black marks on the head prolonged—at first

narrowly, then expanding behind, this part being united to the eyes by a short black

line, which is widest at the eyes; the yellow part of the pronotum with a small black

mark in the centre; the mesopleure with two yellow marks; the median segment with

a four-angled mark at the base, a smaller elongated line at the apex, and the sides

broadly, yellow, this yellow being continued at the apex to the metapleure ; the hind

femora broadly black at the base; the pygidium yellow, except at the apex, which is

ferruginous ; and the wings darker coloured.

A specimen from Chilpancingo, Mexico, is much darker coloured: the black on the

vertex extends to the antennal plates; the vertex is ferruginous (but this may be caused

by discoloration); the pleuree have only a small mark below the tegule; the apical

part of the pronotum is only yellow at the sides and at the apex ; the yellow marks on

the mesonotum are smaller; the scutellum is entirely black, except a small yellow

mark ; on the median segment there are only two short lines at the sides; the femora

are black, being only yellowish at the apex; and the hypopygium is black, rufous round

the apex. In this variety the punctuation is much stronger; the wings are as in the

type.

These three forms are tolerably constant in coloration, although each shows some

variation; but as I can find no structural differences between them, I prefer to treat

all three as forms of one species. The coloration of the abdomen is constant in each.

3. Myzine pulchriceps. (Tab. XII. figg. 21, ¢; 22, 9.)

Nigra, lete flavo-maculata, femoribus flavis, tibiis tarsisyue ferrugineis ; alis fulvo-hyalinis.

Long. 11 millim.

Hab. “MExico, Tierra Colorada, Rio Papagaio, and Venta de Zopilote, all in Guerrero

(H. H. Smith), San Blas in Jalisco (Schumann).

BIOL. CENTR.-AMER., Hymenopt., Vol. IL., October 1893. 2 KK

250 HYMENOPTERA.

‘Head thickly clothed with fuscous hairs, above the antenne strongly punctured; the

clypeus bluntly carinate, much less strongly and more closely punctured than the

vertex; the ocelli in a large pit, with an impunctate space behind it; there is a short

furrow above the antenne. The mandibles are yellow, the apex black and ferruginous,

the hair long and fulvous. The head is yellow, the vertex black, the black at the

apex in the middle incised and with a yellow Jine from the ocelli; the black behind

becomes narrowed, and then runs round the posterior region to become united to the

eyes. The pronotum is strongly punctured; the mesonotum is finely and closely punc-

tured, except at the base; the scutellum with large widely separated punctures; the

median segment at the base closely and finely punctured. The pronotum is yellow,

with a semicircular irregular black mark at the base, and a transverse black band across

the centre, the yellow and also the black band extending down the propleure. ‘The

mesonotum has a yellow mark in the centre, indented at the base; the sides are yellow ;

the postscutellum and scutellum, a mark (narrowed towards the apex) at the base in the

middle of the median segment and a large mark (extending to the propleure) at the

sides, and a large mark on the mesopleure produced downwards at the base and apex

(much more so at the apex than at the base) all bright yellow. Abdomen yellow

above; a mark at the base and a transverse line on the other segments black; the

pygidium yellow at the base, the middle fiery-golden, with a semicircular dark line in

front ; the ventral surface black, with two large marks on the basal segment and two

smaller ones on the second.

The male has the head black, rather strongly punctured, but less strongly on the

vertex; densely covered with fulvous hair; the mandibles, labrum, and clypeus, the

orbits of the eyes to the top of the incision, and two spots over the antenne bright

yellow. The antenne with the scape beneath yellow; the flagellum covered with a

pale pile; the apex rufous. The pronotum closely punctured, yellow; the extreme base

and a large incised mark on the sides black. The mesonotum more strongly punc-

tured all over; a large mark in the centre and two small marks at the tegule, the greater

part of the pleure, the scutellum, and postscutellum, yellow. The median segment

closely punctured, for the greater part yellow ; on each side at the base is a large black

mark, with three roundish incisions at the apex and a small yellow mark on the outside

at the base; at the apex in the middle is a black bifurcated mark; the base of the

metapleure is black. The basal segment of the abdomen is black at the base, the apex

yellow, the black continued down the middle as a somewhat pear-shaped mark; the

other segments broadly yellow at the apex, the black on the second segment, and, to a

less extent, on the third, produced in the centre; the apical segment black, with a

yellow mark in the middle; the second and following ventral segments yellow. Legs

bright yellow, the hinder coxe, trochanters, and base of the femora black, the coxe

marked with yellow beneath. Wings clear hyaline, the extreme apex infuscated, the —

stigma testaceous; the first recurrent nervure received a little beyond the middle of the

cellule, the second close to the middle of the second transverse cubital.

MYZINE. _ . 251

In size the males vary from 9 to 14 millim., and they vary also in coloration. The

femora may be entirely black. The coloration of the median segment shows consider-

able variation: it may be as in the type, but with the black apical mark larger and

entire, or it may be black, with two or three yellow marks; the mesopleure may be black,

with one or two yellow marks; and the metapleure may be entirely black. The mark-

ings on the basal abdominal segment also vary: the projecting part of the black may

be oval, square, or conical, without a neck at its base ; the projection varies in length,

and may disappear entirely. ‘The yellow on the mesonotum may become obsolete, and

the apical segment of the abdomen may have two yellow marks instead of one, as is

more generally the case.

4, Myzine sexcincta.

Scolia sexcincta, Fabr. Syst. Ent. p. 356+; Ent. Syst. 1. p. 236°.

Elis sexcincta, Fabr. Syst. Piez. p. 248°.

Myzine sexcincta, Latr. Gen. Crust. et Ins. iv. p. 112*; Smith, Cat. Hymen. Ins. ii. p. 78°;

Cresson, Trans. Am. Ent. Soc. iv. p. 200°.

Plesia sexcincta, Lepel. de St.-Fargeau, Hist. Nat. Ins. Hymén. iii. p. 584”.

Tiphia maculata, Fabr. Syst. Piez. p. 233°.

Plesia maculata, Guérin, Revue Zool. 1838, p. 58°.

Tiphia namea, Fabr. Syst. Piez. p. 233 ™.

Plesia namea, Lepel. de St.-Fargeau, Hist. Nat. Ins. Hymén. ii. p. 577."

Meria collaris, Say, Bost. Journ. Nat. Hist. i. p. 362; Complete Writings, ii. p. 748”.

Myzine subulatus, var., Say, Bost. Journ. Nat. Hist. i. p. 301; Complete Writings, ii. p. 743”.

Hab. Norta America®, Carolina 791011, Georgia §, Indiana 1¥, ? Texas ®.—Mexico 4.

— ANTILLES 2°.

This species has been recorded from Carolina and Georgia by Fabricius and by

Cresson from Texas; but Cresson, in his “ Catalogue of North-American Hymenoptera ”

(Trans. Am. Ent. Soc. 1887, Supplement, p. 268, nota) remarks that MM. sexcincta

probably “does not really occur in our [%. ¢. Nearctic] fauna, but is confined to the

West-Indian Islands, from whence the type was described.”

The Mexican record is from Say 14, who states that a variety inhabits Mexico in

which the abdominal bands are less abruptly emarginate on each side.

I have not seen a specimen of I. sexcincta from within our limits.

b. Legs black. (Species 5-14.)

* Wings violaceous. (Species 5.)

5. Myzine sexmaculata. (Tab. XII. fig. 19.)

Plesia seamaculata, Guérin, Revue Zool. 1838, p. 57°.

Nigra, postscutello maculisque sex abdominis flavis ; alis fuliginosis. 2.

Long. 22 millim.

2KK 2

252 HYMENOPTERA.

Hab. Mexico! (Sallé), Amula in Guerrero 6000 feet (H. H. Smith), North Yucatan

(Gaumer); GuatemaLa, El Tumbador (Champion).

Head rather shining, strongly punctured, more sparsely on the vertex ; thinly covered

with long pale hair; clypeus sharply carinate in the middle; the mandibles black,

fringed with long fulvous hair. The scape of the antenne deep black, sparsely covered

with long fulvous hair ; the flagellum paler coloured, owing to its being thickly covered

with a pale fuscous pile. The pronotum strongly punctured, the punctures distinctly

separated, the centre finely and closely punctured, the oblique basal part impunctate ;

the mesonotum with fewer and more widely separated punctures than the pronotum,

the sides impunctate; the scutellum punctured like the mesonotum; the median

segment opaque, the apex rather strongly transversely striolate and oblique. The hair

on the thorax is long and white. The abdomen has bluish reflections; the yellow

marks are on the first, second, and third segments; the penultimate segment has scat-

tered punctures and is sparsely covered with white hair; the pygidium is longitudinally

striolated, and is thickly covered with long pale soft hair; the ventral segments are

punctured and bear long white hair at the apex. The legs bear long white hair; the

calcaria are white; the tarsi have the spines rufous.

Our specimens may not really belong to W. sexrmaculata (Guér.), which has no yellow

on the thorax; but otherwise they agree with Guérin’s description. In one or two

examples there are eight marks on the abdomen.

The punctuation of the mesonotum varies in strength. The example from Guatemala

has a yellow mark below the hind wings.

** Wings hyaline, suffused along the costa. (Species 6-13.)

Abdomen with spots only. (Species 6-8.)

6, Myzine toluca.

Nigra, maculis abdominis 8 flavis, postscutello flavo ; alis fusco-hyalinis, antice fumatis. 9.

Long. 15 millim.

Hab. Mexico, Presidio de Mazatlan (forrer).

Head below the ocelli coarsely, above them sparsely, punctured; the clypeus not so

strongly punctured as the front; the mandibles reddish towards the middle, their hair

golden-fulvous. The scape of the antenne shining, bearing a few punctures and some

long pale hairs. The pronotum closely and not very strongly punctured throughout.

The mesonotum to the furrows very finely and closely punctured; the other part with

a few not very large punctures. The scutellum with scattered punctures, except down

the middle. The median segment opaque, the centre rough and closely punctured.

The breast and pleure covered with long white hair; the pronotum densely covered

with shorter fuscous hair; the mesonotum almost glabrous; the median segment with

MYZINE. 2538

a pale pubescence. Abdomen shining, with distinct bluish reflections; the first seg-

ment at the base, and the sides and the apices of the ventral segments, densely covered

with long white hair; the third, fourth, and fifth segments above sparsely, shortly

haired; the pygidium longitudinally striolate, glabrous, the apex reddish. Legs

densely covered with long white hairs; the tarsal spines white; the apices of the tarsal

joints and the tibial spines reddish. The wings hyaline in front, suffused from the

basal nervure to the apex. A short line on the inner side of the eyes at the top, two

marks on the pronotum in front, two small marks on the mesonotum behind, the post-

scutellum, a mark on the sides of the first to the fourth abdominal segments above, and

one on the sides of the first and second ventral segments, yellow.

“7, Myzine centralis.

Long. 18 miilim.

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

Agrees with WM. toluca in having eight yellow spots on the abdomen, but they are

very much larger, and the two on the basal segment are almost united; there is no

yellow on the pronotum or median segment ; there is a yellow mark below the tegule;

the postscutellum is yellow ; and there js a narrow yellow line on the inner orbits of the

eyes. Head with large, deep punctures, closely pressed together above the antenna,

widely scattered on the vertex; the front ocellus in a pit, and there is an impunctate

space in front of it; there is a furrow down the front; clypeus finely rugose, with some

punctures, the apex fringed with pale hair. Antenne with the scape of the flagellum

with large punctures, and bearing long pale fulvous hair; the flagellum covered with

fuscous pubescence. Pronotum coarsely punctured throughout; the base of the meso

notum is impunctate, then follow a belt of minute and another of large punctures ;

scutellum with large punctures on the sides, the middle impunctate; median segment

alutaceous, the sides with pale down; mesopleure punctured and covered with long

white hair. Abdomen shining; the fourth and fifth segments slightly punctured; the

pygidium rugose, not very thickly covered with long pale hair; the sides of the abdomen.

and the ventral surface also covered with long pale hair. The legs bearing long white

hair; the calcaria white, the tarsal spines reddish ; the metatarsus beneath fringed with

fulvous pubescence. Wings subhyaline, the apex broadly fuscous.

The example from the Volcan de Ivazu has on the pronotum two marks in front and

an uninterrupted band behind yellow.

8. Myzine parvimaculata.

Nigra, maculis abdominis 2 flavis; alis fusco-violaceis.

Long. 18 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Head below the ocelli strongly, above them very sparsely, punctured; a transverse

254 HYMENOPTERA.

furrow joins the hinder ocelli; clypeus bluntly carinate, finely rugose, and with some

scattered punctures; mandibles obscure ferruginous along the furrow, the hair long and

fulvous. The scape of the antenne with some large punctures, and a few long golden

hairs at the apex; the flagellum with pale down. ‘The pro- and mesothorax thickly

covered with silvery hair. The pronotum closely and strongly punctured, the base very

finely and closely, the extreme base still more closely punctured and covered with a

silvery pile. The mesonotum in the centre with very few punctures, except at the

apex; the space bounded by the furrows with some large punctures; the sides

impunctate. The scutellum is impunctate down the centre, the other parts bearing

large, distinctly separated punctures. The median segment is finely and closely punc-

tured at the base; the apex indistinctly striolate. Abdomen with the basal segment

finely punctured, the second segment more strongly punctured all over, the third,

fourth, and fifth segments impunctate at the base, the rest closely and finely punctured ;

the pygidium longitudinally striolated, sparsely haired, the apex fiery-red; the ventral

segments very shining, the apices with some punctures and some long pale hairs. The

legs densely covered with silvery hair; the tarsal spines on the anterior legs ferrugi-

nous; the calcaria white; there is a large yellow mark on the hind coxe behind.

Abdomen with spots and bands. (Species 9-13.)

‘. 9, Myzine pulchrina. (Tab. XII. fig. 18.)

Nigra, capite et thorace lete flavo-maculatis, abdomine balteis 8 flavis; alis fere hyalinis, antice fumatis.

Long. 12 millim.

Hab. Panama, David in Chiriqui (Champion).

Head black, shining, moderately strongly punctured, covered with not very long pale

hair, which is longer on the clypeus; a mark on either side of the clypeus, two marks

over the antenne, a line on the inner and outer orbits of the eyes (the outer line

extending beyond the eyes, and becoming joined to a curved line at the top of the

vertex), clear yellow. The scape of the antenne is white at the apex above; the

flagellum is brownish beneath, and bears a pale microscopic pile. ‘The pro- and meso-

thorax covered with long white hair; the pronotum strongly punctured; the centre of

the mesonotum with very few punctures, the part limited by the furrows strongly

punctured, except at the base, which is opaque and very finely punctured, the sides

impunctate; the scutellum strongly punctured; the median segment finely punctured

at the base, the apex impunctate, indistinctly striated. There are two large yellow

marks in front of the pronotum, and a narrower smaller transverse one behind; the

central part of the mesonotum and two lateral marks, a mark on the scutellum, the

postscutellum, the lateral margins of the median segment, a large mark below the

tegule, a smaller mark at the apex of the mesopleure, and a still smaller one on

the metapleure, bright yellow. Abdomen shining, the black with bluish reflections ;

MYZINE. 255

finely punctured; the pygidium longitudinally striolate, almost glabrous, the apex

fiery-red ; a band on the first segment, incised at the base and apex, two large marks on

the second, and continuous bands on the third, fourth, and fifth segments, bright yellow;

beneath there are two pale yellow spots on the second and two lines on the third and

fourth segments; the ventral segments at the apex bear long white hair. The wings

are hyaline, with the margin infuscated from the basal nervure to the apex of the radial

cellule, and the nervures pale testaceous. The legs have a yellow line on the fore tibie,

and the four anterior femora at the base behind are yellow; they are covered with long

silvery hair; the calcaria are white; the fore tarsi and also the spines on the femora,

are ferruginous.

We have also received a specimen of a larger form from Paraiso, Guatemala

(Champion) (14 millim.). It has the scape of the antenne entirely black; on either

side of the clypeus is a yellow mark, separated from the yellow orbital line; there is a

broad yellow mark over the antenne; on the vertex behind the eyes is an elongated

line, the centre being without yellow; there are only two somewhat triangular marks

on the pronotum ; the mark on the scutellum is much larger, and there is a small mark

on the sides at the base; there is a somewhat triangular mark on the base of the

median segment, besides the two large lateral marks; there is only one yellow mark

on the pleure; the marks on the abdomen are much as in the type, but there is no

line on the fifth segment; there is a yellow mark on the hind coxe and femora.

An example from Pefia Blanca, Panama, has only a small yellow mark on the centre

of the vertex, and only one mark on the mesopleure.

A specimen from Capetillo has only the inner orbits of the eye yellow and no mark

on the scutellum ; two small yellow marks on the pronotum, and only one mark on the

median segment, the pleure being entirely black; only one yellow mark on the meso-

pleurze and none on the coxa, the front legs being also devoid of yellow; the second

abdominal segment wants the yellow, and the yellow on the fourth and fifth segments

is interrupted in the middle.

~ 10. Myzine montivaga. (Tab. XII. fig. 15.)

Nigra, abdomine linea maculisque duabus flavis, orbitis oculorum flavis; alis fusco-hyalinis, antice fumatis. 9.

Long. 19 millim.

Hab. Mexico, Chilpancingo in Guerrero 4600 feet (H. H. Smith).

Head closely and strongly punctured, the punctures on the vertex more widely

separated ; densely covered with long grey hair; the inner orbits of the eyes yellow;

the mandibles slightly ferruginous before the apex. The scape of the antenne shining,

bearing large punctures, and beneath with long white hair; the flagellum covered with a

pale pile, the third and fourth joints subequal. The prothorax covered with long grey

hair, closely and finely punctured; the mesonotum more strongly and not so closely

punctured; the mesopleure more coarsely punctured; the median segment opaque,

256 HYMENOPTERA.

laterally covered with a white pile, the centre roughened. Abdomen closely and finely

punctured above, thickly covered with fuscous pubescence; the first segment at the

base and the sides and the apices of the ventral segments bearing long white hair; the

pygidium longitudinally striolate and sparsely covered with long white hairs. The

legs densely covered with white hair; the tarsal spines reddish, and there is a row of

reddish spines on the inner margin of the hinder tibie ; the calcaria white. The wings

subhyaline, fuscous along the margin from the basal nervure to the apex. The post-

scutellum, a spot under the tegule, two spots on the basal segment of the abdomen,

and the base of the third segment also, yellow.

\ 11. Myzine ornaticeps. (Tab. XII. fig. 24.)

Nigra, abdomine linea maculisque duabus flavis; alis fusco-hyalinis, antice fumatis. 9.

Long. 19 millim.

Hab. Mexico, Acapulco and Rincon in Guerrero (H. H. Smith), Guadalajara in

Jalisco (Hége), North Yucatan (Gaumer).

Head very strongly punctured, except behind the ocelli, densely covered with long

fulvous hair; the ocelli in a pit, and behind them is a short transverse channel; the

inner orbits of the eyes bright yellow; the mandibles with the basal half ferruginous,

The scape of the antenne shining, and bearing a few large punctures; the flagellum

covered with a pale pile, the apex red, the third and fourth joints subequal. The

prothorax very strongly punctured, behind finely and closely punctured, with some

larger punctures intermixed; the mesonotum with the base finely punctured, the sides

impunctate, the other part with large scattered punctures, this being also the case with

the scutellum. The median segment opaque, a little roughened in the middle; densely

covered with a pale pile. The pro- and mesonotum densely covered with fulvous

pubescence ; the pleure with long white hair. Two marks on the front of the

pronotum, an incised mark on the mesonotum and one on either side close to the tegule

(which are yellow), the postscutellum, a short curved mark on either side of the median

segment, and a mark below the tegul, yellow. ‘The abdomen shining, the black with

bluish reflections ; the third, fourth, and fifth segments with scattered punctures; the

pygidium longitudinally striolate and with some long pale hair, the apex reddish; the

basal segment densely covered with long pale hair; the second and third segments, and

the apex of the first, almost without hair; the other segments above sparsely covered

with short fuscous hair; the sides and the ventral surface with long white hair on the

apical half of the segments; there are two irregular marks on the sides of the first

and second abdominal segments, and a continuous line on the third and fourth seg-

ments, yellow. The legs covered with long, glistening white hair; the tarsal spines

rufous ; the calcaria white; the tibial spines reddish. ‘The wings subhyaline, suffused

with fuscous along the margin from the basal nervure to the apex.

MYZINE. 257

An example from Venta de Zopilote in Guerrero (H. H. Smith) wants the yellow

marks on the pronotum and median segment, and it has the marks on the mesonotum

much smaller. It is also smaller, being only 15 millim. in length. The second

abdominal band may become obliterated.

“ 12. Myzine fallax.

Myzine fallax, Smith, Descr. of New Species of Hymen. p. 183°.

Hab. Mexico },

’ 13. Myzine analis.

Plesia analis, Guérin, Revue Zool. 1838, p. 58°.

Hab. Mexico}.

*e* Wings hyaline. (Species 14.)

’ 14. Myzine smithiana.

Long. 17 millim. ¢.

Hab. Mexico, Amula 6000 feet, Chilpancingo 4600 feet, Rincon 2000 feet, Tierra

Colorada 2000 feet, all in Guerrero (H. H. Smith), North Yucatan (Gaumer).

Head closely and strongly punctured, densely covered with long dull-fulvous hair ;

the ocelli in pits; a broad and deep longitudinal furrow over the antenne; the inner

orbits of the eyes and the clypeus yellow; the mandibles yellow, the apices ferruginous ;

the labrum brownish; the apex of the clypeus almost transverse. Antenne stout; the

apex reddish. The pro- and mesonotum moderately strongly, the pleure still more

- strongly, punctured. In front of the pronotum are two yellow marks, and the apex is

edged with yellow; there is a curved yellow mark below the tegule, and a smaller one

lower down below the hind wings; there is a yellow mark on the apex of the meso-

notum, one across the scutellum, and one on the postscutellum; the inner furrows on

the mesonotum are wide and deep. The median segment is very closely and rather

strongly punctured, except a smooth, impunctate, glabrous space at the sides, beneath

which is a curved yellow line. The mesonotum is sparsely covered with short dull

fulvous hair, the median segment more thickly with longer hair of the same colour; the

hair on the pleure is paler. Abdomen shining, sparsely pilose; the black ground-colour

with blue and violet reflections; all the segments, except the last, banded at the apex

with yellow, the yellow at the sides turning backwards on the ventral surface; close to

the yellow dorsal bands are yellow marks; the segments above and beneath are sparsely

punctured. Legs black; the four anterior tibie in front and the fore tarsi yellow; a

mark on the hind cox, and one on the apex of the hind femora beneath, yellow; the

femora bearing on the lower side long white hair, above densely covered with silvery

pubescence ; the tarsi are also covered with a dense pubescence, their spines pale

fulvous; the calcaria are pale. Wings clear hyaline, the apex infuscated; the second

BIOL. CENTR.-AMER., Hymenopt., Vol. II., February 1894. 2 LL

258 HYMENOPTERA.

and third cubital cellules are subequal, both being narrowed towards the top; the third

transverse cubital cellule is curved ; the first recurrent nervure is received in the apical

third of the cellule, the second close to the base of the cellule. |

We have also received specimens of a form with the four front femora broadly in

front, and the tibie and tarsi entirely, yellow, the hind tibie yellow in front, for the

greater part black behind, and the hind tarsi entirely yellow. The tegule may be

fuscous or yellow, and the scape of the antenne is sometimes yellow beneath.

This insect is common, and it, no doubt, is the male of one of the species I have

described, but I cannot say which.

ii. Body entirely black. (Species 15.)

_ 15. Myzine melanocephala.

Nigra; alis hyalinis. -¢.

Long. 10 millim.

Hab. Mexico, Frontera in Tabasco (H. H. Smith).

Head black, except three yellow marks on the clypeus and the base of the mandibles,

and two small marks over the antenne; the clypeus covered with pale fulvous hair,

rugosely punctured ; the front and vertex clothed with long fuscous hair, rather strongly

punctured, the punctures distinctly separated; the tips of the mandibles rufous. The

pro- and mesonotum shining, the former with some minute punctures; the mesonotum

with the punctures larger and more widely separated, its centre raised and bordered by

a furrow, the raised part becoming narrowed towards the scutellum ; the middle of the

median segment coarsely, rugosely punctured, the apex semioblique, roughly irregularly

coriaceous in the centre, and with a blunt tooth at the sides, and another curving

upwards in the centre at the apex. The mesopleure strongly punctured, the punctures

distinctly separated ; the metapleure finely and closely punctured. Two small marks in

front of the pronotum and a line round its apex, a small incised mark near the centre

of the mesonotum, one on the postscutellum, and one under the tegule, yellow. The

abdomen black, with a violaceous hue, with fine scattered punctures; the segments at

the apex narrowly lined with yellow. Wings hyaline; the first cubital cellule a little

narrowed at the top—at the top equal in length to, at the bottom longer than, the third ;

the first and second transverse cubital nervures straight, oblique, the third curved; the

first recurrent nervure is received beyond the middle, the second close to the base of

the cellule.

iii. Abdomen ferruginous. (Species 16.)

16. Myzine rufiventris. (Tab. XII. fig. 23.)

Myzine rufiventris, Cresson, Trans. Am. Ent. Soc. iv. p. 201°.

Hab. North America, Texas’.—- Mexico, Chilpancingo in Guerrero 4600 feet

(H. H. Smith).

MUTILLIDZ. 259

Cresson ! describes the wings as “dark fuscous, paler at apex”; but in the Mexican

example I refer to his species they are not paler at the apex, but decidedly paler at.

the base in front of the basal nervure. This specimen has the head and thorax covered

densely with long white hair; the pronotum finely and closely, the mesonotum much

‘more strongly, punctured, the punctures on the latter more widely separated, the

extreme base of the mesonotum being impunctate; the scutellum punctured like the

mesonotum; the median segment coarsely and irregularly reticulated; the abdomen

sparsely covered with long white hair; the legs densely covered with white glistening

hair; the second recurrent nervure received quite close to the base of the cellule.

Fam, MUTILLIDA.

This well-marked family, one of the most extensive of the Aculeata, is well represented

in our region. Its chief peculiarity is that the females are apterous and the males

winged. This fact, coupled with great differences in other respects, in the absence of

direct observation makes the uniting of the sexes a work of very great uncertainty, and,

in truth, I do not see how it is to be accomplished from the mere comparison of cabinet

specimens. In Mutilla proper I have only been able to unite the sexes to my satis-

faction in one instance, and this I have done on the direct observation of Mr. H. H.

Smith, who has noted the male and female of Mutilla cyllene. The difficulty is further

increased by the males (and this is true of Mutilla and Spherophthalma, and of the

former, at least, in most parts of the world) having a certain type of coloration in com-

mon, namely, black bodies and legs, with a ferruginous abdomen and fuscous or blackish

wings, and with, on the whole, a general agreement in punctuation and clothing of the

body. This general resemblance of the males not only makes their specific determination

a work of difficulty, but it adds greatly to the task of assigning to them their respective

partners of the opposite sex ; it is, in fact, impossible to do this in many cases in default

of direct observation on the living insects, and I have therefore had to describe most of

the males as distinct species, although I feel satisfied that they are connected with

females that I or other Hymenopterists have already described under different names.

The males, as species, are not difficult to separate, even if they do agree closely in

clothing and coloration, by the keels &c. of the pygidium and hypopygium, for I find

that in these parts each species shows distinctive peculiarities. Unfortunately, hardly

any of the authors who have described American Mutillide make any mention of this

most important structural feature. The form and structure of the internal genital

armature is another prime factor in specific definition; but, of course, it is not of such

easy application as the form of the terminal abdominal segment.

As regards the males (and the same remark might almost equally well be applied

to the females) the following points should be noted in specific descriptions :—The

form, clothing, and sculpture of the scape, and the relative lengths of the third and

2LL 2

260 HYMENOPTERA.

fourth joints of the antenne; the form of the clypeus; the manner in which the head

is developed or narrowed behind the eyes, and also its width compared to the thorax ;

the shape of the apex of the pronotum and of the median segment, and also of the

median area; the form of the basal ventral segment of the abdomen, more particularly

of the central keel. As regards the form of the keel, it has been used by Sichel and

Radoszkovsky, in their ‘‘ Essai d’une Monographie des Mutilles de l’ancien Continent”

(Hore Soc. Ent. Ross. vi. pp. 139 et seq.) to classify the males.

I have only been able to find one record elucidating the natural history of the

American Mutillide. Blake, in his Monograph (Trans. Am. Ent. Soc. 1886, p. 179),

simply says that they “are now well known to be parasitic, especially on various species

of Bombus”; and Cresson (Trans. Am. Ent. Soc. 1887, Suppl. p. 108) in practically

reproducing this statement very properly points out that they must have some other

hosts than humble-bees, inasmuch as they are found in abundance where no Bomdz are

known to occur.

That they are parasitic and solitary in their habits may be taken for granted, as also

their love for hot sandy localities. The instance alluded to above as regards the habits

of one of the American species is given by Westwood (Introduction to the Modern

Classification of Insects, ii. p. 214), who remarks that “from information given by

Mr. MacLeay to Mr. Kirby, it appears that a large North-American species (Mutilla

coccinea * =" occidentalis, Linn.) is very active, taking flies by surprise, probably for

the purpose of storing its cells. Its sting is so powerful that a person stung by

one lost his senses in five minutes, and was subsequently so ill that his life was

despaired of.”

That they must have other hosts than Bombi seems quite clear from the records,

scanty as they are, of the habits of European species. One most accurate observer,

Giraud (Verh. zool.-bot. Ges. Wien, 1863, p. 1307), relates how he found four cocoons

identical in every respect, from which he bred two Ammophila heydenii, Dahlb., and one

Mutilla differens, Lep., the deduction being apparently conclusive that the Mutilla is a

parasite of the Ammophila. Sichel (cf. Hore Soc. Ent. Ross. vi. p. 11) concludes from

his observations that Mutilla incompleta, Lep., is in all probability a parasite of a small

species of Halictus (a solitary bee), and the same observer (op. cit. p. 12) believes that

Mutilla coronata preys on Larra anathema.

The classification of the Mutillide is a work of extreme difficulty, and in view of the

very large number of species ranged under Mutilla (between 900 and 1000) it would

be much more convenient if the genus could be satisfactorily split up. It seems, how-

ever, almost impossible to do this in anything like a natural manner, even with the

females, while so few of the males being allocated to their respective females further

increases the task. Moreover, what might be a satisfactory system of arrangement for

* This name is not to be found in Smith’s British Museum Catalogue, nor in Blake’s Lists.

MUTILLA. 261

Palearctic and Oriental Mutillide might not apply to the Neotropical forms. The

males could be separated by the number of the cubital cellules, which range from one

to four, but this will not aid us with the females. In my opinion Spherophthalma,

Blake, should be accepted as distinct from MJutilla—the circular, convex, shining eyes

alone serving to separate it from Mutilla, the eyes in the latter being oval, larger,

and duller. Spherophthalma and Mutilla are divisible, in both sexes, into two well-

marked groups by the form of the basal abdominal segment: in the one case it forms

a distinct peduncle, quite distinct from the second segment, to which at the apex it is

not equal in width; while in the other section the first segment becomes gradually wider

to the apex, and is equal in width to the base of the second and continuous with it.

These differences are so apparent that they might be used as marks of generic distinc-

tion; in fact, they have been so used by Radoszkovsky (Hore Soc. Ent. Ross. xix.

p. 32), who reserves the name Spherophthalma, Blake, for the division with the

“abdomen petiolé, premier segment ne plaquant par le suivant,” the males having

three cubital cellules; and for the section with the “abdomen subsessile, premier

segment plaqué avec le second,” he creates a new genus Edrionotus, the males of which

are said to have only two cubital cellules. For another group with round eyes he has

proposed (op. cit. p. 85) the genus Tricholabiodes, this having the “corps allongé,

premier segment abdominal long, subpedonculé, ne plaquant pas le suivant, téte

transversale, yeux ronds”; the wings with three cubital cellules. Only males are

known.

It is worthy of remark that, so far as we know, all the males of the first division of

Mutilla—that with the basal abdominal segment gradually dilated to the apex—have

the abdomen entirely or for the greater part ferruginous, all the segments, too, being

densely fringed with fiery-ferruginous hair; the petiolated section, on the other hand,

having the abdomen, except in a few species, black, with white hair. In the first

division also the system of keels, spines, &c. on the apical abdominal segment is much

better developed. This fact, among others, inclines me to the view that the two sections

ought to be separated generically, but I am reluctant to make this division without a

comprehensive study of the species from other parts of the world.

As a matter of convenience, when only the males of a species are known, I have

placed them together.

MUTILLA.

Mutilla, Linnzeus, Syst. Nat. 12th edit. i. 2, p. 966 (1767).

This genus shows much less diversity in the form and structure of the head and

thorax than does Spherophthalma ; it has the body much less hairy, and the number

of species, at least in the Neotropical region, is much fewer.

262 HYMENOPTERA.

A. The basal segment of the abdomen gradually dilated to the apex and continuous

with the base of the second. (Species 1-40.)

1. Females (the males known or not). (Species 1-20.)

i. The thorax broadly incised in the middle. (Species 1.)

1. Mutilla arguta. (Tab. XIII. fig. 2, 2.)

Capite aureo-hirto; thorace ferrugineo, nigro-maculato; abdomine nigro, ferrugineo- et aureo-maculato. @.

Long. 3°5 millim.

Hab. Panama, Bugaba (Champion).

Head wider than the thorax, closely, rugosely punctured; the vertex sparsely

covered with fuscous hair, the lower part with longer white hairs; the front also with a

pale golden pubescence ; the vertex irregularly suffused with fuscous patches. The

eyes large, projecting, not reaching to the top of the head; the head well developed

behind them and not much narrowed. The scape of the antenne bears a short silvery

pubescence, and the flagellum a pale microscopic pile ; the third joint is a little longer

than the fourth. The thorax broadest in front, narrowest towards the apex, the middle

contracted broadly; the prothorax with a distinct neck at the base, the apical part

rounded in front; at the base of the contracted middle part of the mesothorax are two

stout teeth; the middle is rough, but without distinct teeth; along the edge of the

median segment at the base are four sharp teeth of moderate length and a fifth shorter

blunt one. The median segment has a rounded semioblique slope. The upper part of

the thorax is finely and closely rugosely punctured, and covered with long fuscous hair.

The mesopleure are excavated, shining, glabrous, very finely, longitudinally striated. —

Abdomen a little wider than the thorax, finely coriaceous ; the base covered with long

white hair; the middle and apical parts with the hair sparser and shorter; the four

apical segments are also densely fringed with pale golden hair. The basal segment is

gradually dilated to the apex. The second segment at the base is blackish, the black

being cleft in two by a central ferruginous band, which is broad at the base, narrower

at the apex; next comes a broad yellowish band, contracted in the middle; the apex

is blackish suffused with ferruginous, the extreme apex in the middle with pale golden |

hair. The third segment at the base is transversely striated. The legs (including the

femora) are covered with soft silvery hair.

A variety (?) from the Volcan de Chiriqui (Champion) differs from the above in

coloration: the head behind and in the centre of the vertex is black; the flagellum of

the antenne is black; there is a broad black stripe down the middle of the thorax ;

the upper part of the mesopleure is more or less blackish ; the basal part of the second

abdominal segment is black, with a broad ferruginous band down the centre, the black

being continued down the middle in a narrow band, dividing a broad irregular yellowish

band in two, the apex also black and wanting the fringe of golden hair; the third

MUTILLA. 263

segment is black, the base transversely striated, the apex finely punctured and fringed

with fulvous hair; the fourth segment is black at the base; the other segments are

rufous, fringed with golden pubescence, and bearing long black hairs; the rest of the

abdomen bears long fuscous hair, the hair on the base being fuscous, not white. The

thorax has the appearance of being narrower and shorter, and the posterior spines are

certainly longer and more curved.

Another example (also from Chiriqui) has the base of the second segment smooth,

glabrous, and impunctate; the apex of the second segment reddish ; the central yellow

band (which has the yellow suffused with red) separated into two parts by a black line,

narrow at the base, dilated in the middle; the fourth abdominal segment smocth,

glabrous, and impunctate; the head broadly black in the middle in. front; and the

hinder tibize infuscated towards the apex.

ii. The thorax not incised in the middle. (Species 2-40.)

a. Head and thorax red. (Species 2-10.)

* Abdomen reddish. (Species 2.)

2. Mutilla cyra.

Ferruginea ; capite supra aureo-velutino; abdomine maculis 8 aureis, segmento 2° fascia marginali aurea. @.

Long. 10 millim.

Hab. Mexico, Chilpancingo in Guerrero 4600 feet (H. H. Smith).

Head coarsely punctured, covered with silvery-white, and on the vertex with some

longer black, hair. The eyes of moderate size, not reaching to the top of the head,

which is hardly narrowed behind them. The clypeus indistinctly toothed at the sides.

Mandibles black, with a reddish stripe at the base. The scape of the antenne with

depressed white hairs; the flagellum narrowed at the base, covered with a white pile ;

the third joint one half longer than the fourth; the three basal joints ferruginous, the

others black. ‘The thorax narrower than the head, coarsely punctured, except on the

mesopleure. The pronotum with a distinct neck; the sides roundly narrowed from

the apex to the base, the apex arcuate. The sides of the mesothorax very slightly

concave, rugged. The median segment with a semioblique slope, more coarsely

punctured than the mesonotum; the sides with some stout teeth. ‘There is a thick

patch of white pubescence on the sides of the pronotum; the mesonotum bears long

black hairs, this being also the case with the median segment, but the hairs there are

longer and blacker. ‘The basal segment of the abdomen is short, becoming gradually

wider towards the apex, where it is confluent with the second; in the centre it is

shining and impunctate, punctured round the edges, and above bears a ring of white

silvery. hair. The second segment is coriaceous; the apex and sides are fringed with

silvery-white pubescence ; and there are two elongated macule at the base. There is

264 HYMENOPTERA.

a squarish white mark on each side of the third, fourth, and fifth segments, the two on

the last becoming confluent at the apex. The pygidium is fringed laterally with long,

stout, dark fulvous hair. The second ventral segment is strongly, the other segments

more finely and closely, punctured, and fringed with white hairs; the basal segment is

covered with long white hair; the second segment is covered with silvery hair at the

sides, and above there are some black hairs; the third to the fifth segments bear also

black hairs, these segments, too, being infuscated in the middle. The legs are thickly

covered with silvery-white hairs; the tibial spines stout, fiery-red, blackish at the

apices; the calcaria pale fulvous; the tarsal spines fiery-red.

This species differs from the others of this section in having the abdomen ferruginous

instead of black.

** Abdomen black. (Species 3-10.)

3. Mutilla rufofemorata. (Tab. XIII. fig. 1, 2 .)

Ferruginea; abdomine nigro, basi rufa, albo-maculata; antennis nigris; tibiis tarsisque fuscis. ¢°.

Long. 15 millim.

Hab. Mexico, Amula in Guerrero 6000 feet (H. H. Smith).

Head, thorax, coxee, trochanters, and femora red ; the abdomen black, with the base

of the first segment reddish, its apex, two broad lines on the base of the second

segment, the apex of the latter broadly, a broad continuous line proceeding from it to

the last segment, and also the edges of the ventral segments, silvery-white. The head

not much wider than the thorax; above the antenne coarsely punctured ; the antennal

plates shining, impunctate, the part between them coarsely punctured; on either side

of them the head is smooth and impunctate, the division from the upper punctured

part being indicated by an irregular keel. Clypeus finely punctured. yes rather

small, oval, nct reaching to the top of the head, being placed almost in the middle

line; the head is hardly narrowed behind them. The mandibles are black, reddish in

the middle. The scape of the antenne is piceous towards the base, bearing a few hairs

and some large punctures; the flagellum covered with a pale microscopic down, and

tapering perceptibly towards the apex; the third joint twice the length of the fourth.

Thorax quadrate, twice the length of the head; the base rounded and narrowed, the

apex transverse, the sides contracted inwardly; the middle with a small, but distinct,

incision; the sides roughly crenulated; on the sides of the median segment near the

middle is a distinct tooth ; coarsely punctured, and covered (as is also the head) with

silvery hair; the mesopleure shining, impunctate, slightly hollowed. The abdomen

broader than the thorax; the base (the reddish part) of the first segment oblique,

shining, glabrous, and separated from the apical part, which is covered with black

pubescence and white hair; the sides of the second segment coarsely punctured. The

pygidium laterally covered with long fuscous hair. The tibie and tarsi thickly covered

MUTILLA. 265-

with stiff white hairs; the tibial spine stout and black; the apical tarsal joints reddish

at the apex. |

‘

4. Mutilla mexicana.

Ferruginea; abdomine nigro, fulvo-maculato; antennis nigris. ©.

Long. 12 millim.

Hab. Mzxtco, Oaxaca (Hége).

Head as wide as the thorax, coarsely punctured; the eyes small, placed slightly

above the middle line, but still distant from the top, the head very slightly dilated

behind them; the lower part of the cheeks bluntly bispinose; the clypeus toothed

stoutly at the sides; the mandibles black, reddish at the apex. The scape of the

antenne thickly covered with long silvery hair, the flagellum with a whitish pile; the

third joint twice the length of the fourth. The thorax elongate-quadrate; the base

rounded, the apex truncated and with a semioblique slope, the sides very slightly

curved inwardly; coarsely punctured; the mesopleure shining, glabrous, except for a

slight whitish pile, and impunctate. The abdomen has the basal segment gradually

dilated to the apex, and confluent with the second; its apex, two broad marks on the

base of the second segment, the apex of the latter broadly, a broad mark on the sides.

of the third, fourth, and fifth segments, and the apices of the ventral segments also,

silvery-white; the pygidium covered with dull fulvous hairs. The sides of the second

dorsal segment strongly punctured, and more or less rufous, this being also the case

with the second ventral segment. The femora sparsely, the tibie and tarsi thickly,

covered with white hairs; the tibial spines black. |

Similar in coloration to M. rufofemorata, except that the legs are entirely red, but

easily distinguishable from that species by the base of the first abdominal segment not

being testaceous, smooth, glabrous, and oblique; the thorax is also less concave

laterally, and without an incision in the middle; the median segment is without a.

tooth on the side; and the hair on the head and thorax is longer, thicker, and black,.

not silvery-white.

5, Mutilla belti.

Ferruginea ; abdomine nigro, albo-maculato; antennis nigris, scapo rufo. 9.

Long. fere 10 millim.

Had. Nicaraaua, Chontales (Belz).

Head a little wider than the thorax, coarsely punctured, the top bearing fuscous:

hair; above the antenne and on the clypeus the hair is pale fulvous, behind the eyes

it is shorter and silvery; mandibles reddish, above black. The eyes rather small, not ~"

reaching to the top of the head, which is not much narrowed behind them, and

developed laterally a little beyond their width. The scape of the antenne reddish,

BIOL. CENTR.-AMER., Hymenopt., Vol. II., February 1894. 2 MM

266 HYMENOPTERA.

the outer side smooth and glabrous, the inner side bearing long white hair; the second

and third joints dull rufous, the second bearing long fulvous hairs, the other joints

with a microscopic down; the third joint distinctly longer than the fourth. The

thorax elongate-quadrate, the sides slightly narrowed, rough above, coarsely punctured,

except the mesopleure, which are smooth and shining; the apex of the pronotum

rounded; the median segment at the apex almost transverse, and with a steep semi-

oblique slope. The thorax above bears long black hair; the hair on the median

segment is long and white. The abdomen is wider than the thorax. The basal segment

is shining, but bears large, widely separated, shallow punctures ; the apex with a band

of pale fulvous hair. The second segment is coarsely shagreened, without distinct

punctures; the sides and a band on the apex are pale fulvous; and at the base are two

elongated lines proceeding from the extreme base to near the middle. On each of

the third, fourth, and fifth segments are two white marks, which form an almost

continuous band. The pygidium is rough and laterally bears a thick mass of long

dark fulvous hair. The second ventral segment is somewhat strongly punctured, and

bears dark fulvous hair; the other segments are less strongly and uniformly punctured,

and are fringed with rather long fulvous hair. The legs are red, with the knees black,

and are clothed with white hair; the tibial spines are black, the calcaria pale.

This species agrees very closely in coloration with MW. mexicana, except that the

scape of the antenne is black; but otherwise may be readily separated from it by the

clypeus not being toothed, the lower part of the cheeks only very indistinctly toothed,

the head less developed behind the eyes, the slope of the median segment much steeper

(it being not so broadly and gradually rounded), and the basal macule on the second

abdominal segment longer and narrower, the apical band also narrower.

6. Mutilla cyllene. (Tab. XIII. figg. 4,¢; 5,6 organ; 6, 2.)

Ferruginea ; capite subtus nigro; geniculis coxisque nigris; abdomine nigro, subtus rufo; antennis nigris

abdomine (2 ¢) rufo; alis fuscis.

Long. 15 millim.

Hab. Mexico, Chilpancingo in Guerrero 4600 feet (H. H. Smith).

Head rather strongly punctured; the vertex with long fuscous hair, the rest densely

covered with long white hair; the apex of the clypeus transverse, its sides oblique;

below the eyes the cheeks terminate on each side in a pair of short, stout, blunt teeth ;

the mandibles are punctured on the basal half. The eyes are large; the head is only

slightly developed behind them, and not much narrowed. The antenne have the scape

sparsely pilose; the third and fourth joints are equal in length. The pronotum is

coarsely punctured ; the sides with silvery pubescence, the base with long pale hair, the

apex with a broad dense band of long white pubescence. The mesonotum is shining,

very coarsely and irregularly punctured; the hair black; the scutellum very slightly

convex, coarsely punctured, covered with long blackish hair, the apex with white hair.

MUTILLA. 267

The tegule are large, not much developed behind, entirely glabrous, shining, impunc-

tate. The median segment almost with a gradually rounded slope to the apex,

reticulated, the basal area narrowed at the apex, where there is not a distinct tubercle ;

covered with long white hairs; the base on either side of the area with a thick mass of

white pubescence. The propleure coarsely reticulated, the depressed apex crenulated

throughout. The metanotum strongly punctured, covered with long white hair; the

metapleure reticulated throughout, except two bands, which diverge at the bottom.

The legs are covered with long white glistening hair. The radial cellule is wide,.

narrowed (but not much) towards the apex, and does not extend beyond the third

cubital; the basal abscissa of the radius is sharply oblique, and is shorter than the

apical, which is curved at the base and almost straight at the top. The first cubital

cellule is as long as the radial; the second at the top is shorter than the space bounded

by the first transverse cubital and first recurrent nervures; the third is longer at the

top than at the bottom, and is sharply angled where the nervures are received or

emitted. Both the recurrent nervures are received. beyond the middle. The transverse

median nervure is received distinctly before the basal nervure.

The female has the head and thorax ferruginous, except the sides from the upper

third of the eyes and from below the antenne in the middle; the legs ferruginous, the

knees broadly black, the metatarsi infuscated; the antenne black, the scape dull

ferruginous. Head coarsely punctured; the vertex with rather long black hair, the

lower orbits of the eyes and the cheeks with whitish pubescence, the oral region with

long white hair; the clypeus blackish, broadly and shallowly incised, the sides termi-

nating in blunt, somewhat triangular teeth ; the mandibles broadly ferruginous at the

base. The eyes of moderate size; the head not much narrowed or developed behind

them. The antenne stout; the scape covered with glistening fulvous and silvery hairs;

the third joint not quite double the length of the fourth. The thorax coarsely

punctured, above sparsely covered with blackish hair, the sides slightly, but distinctly

concave, the pleur (except at the apex) impunctate ; the median segment at the apex

with an abrupt slope, and covered with white pubescence. The legs thickly covered

with glistening silvery hair; the tibial spines black and ferruginous; the calcaria

white. The basal segment of the abdomen black, with a steep oblique slope towards

the head ; rather closely covered with whitish hair; the apex with a thick band of

white pubescence. The second and following segments of the abdomen black above,

alutaceous, the sides and ventral surface ferruginous; from the base of the second

segment run two white lines to beyond the middle, the apex with a broad sinuated

white band; on the sides of the following three segments is a white mark, the whole

forming a continuous band. The pygidium is closely punctured, the sides fringed with

long blackish hairs. The hair on the back of the abdomen is black; the ventral

segments are thickly fringed with silvery hair; the second segment strongly, the others

] ctured.

finely pun 2 un?

268 HYMENOPTERA.

This species agrees in size and coloration with M/. connexa (including the coloration

of the basal segment of the abdomen, which is only black at the base), but differs from

it in having the abdomen distinctly punctured; the pygidium with only the lateral

keels distinct at the apex, the centre being raised, smooth, and shining, and terminating

in a closed longish area, which is acutely pointed at the base and apex; the hypo-

pygium not dilated in the centre, and terminating laterally in two stout teeth.

Also a close ally of M. cyra, but it is a stouter species; the head wants the golden

pubescence, which, besides, is black below ; the thorax is more distinctly concave ; the

hair on the abdomen is black; and the white lines on the second segment are

longer.

7. Mutilla suspensa.

Mutilla suspensa, Gerst. Archiv f. Naturg. xl. p. 299 (1874).

Hab. Mexico},

This species has the head and thorax red; but only the femora in front and the coxe

are red, the rest of the legs being piceous.

8. Mutilla confusa. (Tab. XIII. fig. 8, 2.)

Ferruginea ; antennis nigris, basi late rufa ; abdomine nigro, segmento 2° albo 3-maculato. 9°.

Long. 6 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Head considerably wider than the thorax, coarsely punctured ; sparsely covered with

fuscous hairs on the top, the lower part with white hair. The eyes prominent, mode-

rately large, reaching nearly to the top of the head, which is considerably and roundly

narrowed behind them. The scape of the antenne shining, sparsely punctured and

haired, grooved above ; the flagellum covered with a microscopic down; the third joint

one half longer than the fourth and narrowed at the base; the four basal joints are

reddish, the others black. The thorax is narrowed and rounded at the base, wider at

the apex, the apex of the pronotum arcuate; above coarsely punctured; the meso-

pleure shining, impunctate; the median segment with a rather steep, rounded slope to

the apex. The upper part of the thorax with long black hairs; the lower part of the

pleure with a silvery pubescence. The basal segment of the abdomen short, becoming

gradually dilated towards the apex, semiperpendicular, shining, impunctate; a stripe

of silvery-white hair on each side at the apex. The second and following abdominal

segments coarsely alutaceous ; the second segment with black, the other segments with

longer white hairs ; at the base of the second segment are two oval white marks, and on

the apex are two white lines with an oval mark between them; on the following three

segments are white marks, which form a continuous line. The pygidium is fringed

laterally with long dark fuscous hairs. The second ventral segment rather strongly

MUTILLA. 269

punctured; the apices of the ventral segments fringed with white hair. The legs

covered with white hairs; the tibial spines slender, sharp, fulvous.

9. Mutilla leona.

Mutilla leona, Blake, Trans. Am. Ent. Soc. iii. p. 2307, xiii. p. 2002.

Hab. Mexico (Sumichrast 12),

10. Mutilla dedala. (Tab. XIII. fig. 9, 2.)

Ferruginea ; abdomine nigro, subtus rufo, supra late cuneo-maculato. 9.

Long. fere 8 millim.

Hab, Mexico, North Yucatan (Gaumer).

Head as wide as the thorax, closely covered with large, deep, roundish punctures,

and sparsely clothed with long black hairs, the oral region with long fulvous hair.

Hyes large, prominent, the head obliquely narrowed behind them. The antenne stout,

black, the flagellum dull piceous beneath ; the scape punctured, shining, bearing long

white hair; the third joint one half longer than the fourth. Thorax very coarsely

punctured, covered with long black hair, the hair on the median segment paler; the

mesopleure impunctate, covered with white pubescence. The sides of the thorax

straight, if anything a little dilated towards the apex, which has an abruptly rounded

slope, and has the punctures longer and deeper than they are on the mesonotum. The

abdomen is longer than the head and thorax united. The basal segment is ferru-

ginous, its apex with a band of golden pubescence. The second segment is coarsely

alutaceous above, the sides with large punctures; on the base are two large broadly

oval golden marks, which extend near to the middle; the apex has a broad golden

band which occupies more than one third of the length of the segment. The other

segments are golden, except for a wedge-shaped black mark in the middle; the fourth

segment above at the base is black, with the extreme base ferruginous, and is closely

punctured. ‘The pygidium is ferruginous, finely punctured, and fringed laterally with

long fulvous hair. The ventral segments are ferruginous at the base (the second to

the extreme apex); the second segment is coarsely and deeply punctured ; the others

are more finely punctured and fringed with golden hair. ‘The legs are covered with

glistening white hairs; the tibial spines are black.

M. leona agrees, judging from the description, closely with this species; but the two

are, I think, distinct: e. g. I. leona is only 5°5 millim. in length; the punctures on

the head are described as “ elongate” (while in U/. dedala they are round). Moreover,

in M. dedala the median segment is not “ reticulate” ; the second abdominal segment

has two large broadly ovate marks (instead of “two short longitudinal stripes”’); and,

lastly, the abdomen is not “ ovate,” but broadly dilated at the hase, becoming sharply

_ narrowed from the second segment. In neither of his descriptions does Blake describe

the colour of the antenne nor of the tibial spines.

270 HYMENOPTERA.

b. Head black. (Species 11-19.)

{ Legs reddish. (Species 11-16.)

* Abdomen for the greater part ferruginous. (Species 11 and 12.)

11. Mutilla impudica. (Tab. XIII. fig. 11, 2.)

Ferruginea; capite nigro; antennis nigris, scapo rufo; abdomine argenteo- et nigro-maculato. @.

Long. 7 millim.

Hab. Mzxico, Chilpancingo in Guerrero 4600 feet (H. H. Smith).

Head wider than the thorax, coarsely punctured, covered with long blackish hair ;

the oral region with the hair silvery and shorter; the base of the mandibles ferru-

ginous. ‘The eyes large, reaching to the top of the head, which is moderately developed

behind them and not much narrowed. The scape of the antenne sparsely covered

with silvery hair; the flagellum more or less fuscous beneath; the third joint nearly

twice the length of the fourth. The thorax very coarsely punctured above, and covered

with moderately long black hair, the sides slightly concave; the median segment

broadly rounded at the top and with a rather abrupt slope; the mesopleure smooth

and impunctate. The abdomen a little wider than the thorax, above bearing long

black hair. The basal segment is gradually dilated to the apex and confluent with the

second; it is covered with long pale hair, and at the apex has a band of white

pubescence. The second segment is punctured rather strongly, especially towards the

sides ; near the base are two golden lines, which reach to the middle but do not touch

the base; at the apex isa belt of golden pubescence. The third, fourth, and fifth

segments are shagreened, blackish in the middle, at the sides with a mark of golden

pubescence, that on the fifth united to the opposite one at the apex. The pygidium is

punctured and fringed laterally with long fulvous hair. The second ventral segment

is rather strongly punctured; the others much more finely punctured at the apex,

where there is a sparse belt of long fuscous hair. Legs with the femora and tarsi

sparsely covered with white hair, the hair on the metatarsi thicker, the other tarsal

joints covered with silvery pubescence and blackish at the tips. The tibial spines are

long and thick.

This species bears a general resemblance to M. cyra, but it is smaller, has the head

entirely black, and the eyes are placed much higher up on the head. From the

species of this group with reddish legs it may easily be known by the ferruginous

abdomen with golden markings.

M. subrobusta may be known from IM. impudica by the head having a thick brassy

pubescence, the thorax stouter and hardly convex along the sides, the apex of the

median segment more rounded and not so sharply oblique, and the abdomen shorter

compared to the length of the thorax, its apex being densely covered with reddish hair ;

is also a smaller insect. ;

MUTILLA. 271

12. Mutilla subrobusta. (Tab. XIII. fig. 10, 2 .)

Nigra ; thorace ferrugineo, abdominis apice late aureo-sericeo. 9°.

Long. 6 millim. .

Hab. Panama, Bugaba 800 to 1500 feet, Volcan de Chiriqui 2500 to 4000 feet

(Champion).

Black ; the basal half of the antenne, the thorax, and legs ferruginous ; the knees, a

mark on the apex of the median segment, the breast, and the pleure more or less, black ;

the apex of the first and second abdominal segments, the sides of the latter and two

lines running from its base to the middle, a mark on either side of the third, fourth,

and fifth abdominal segments, and the edges of the ventral segments, silvery-white.

The head not very strongly punctured, closely covered with dull golden pubescence

and with some long black hairs. The eyes moderately large, the head obliquely

narrowed behind them. ‘The scape of the antenne covered with white hair, the

flagellum with a silvery pubescence; the third joint one half longer than the fourth.

Thorax quadrate, about twice the length of the head, very slightly contracted inwardly

at the middle, a little dilated towards the apex; the sides roughly crenulated ; the

apex rounded, with a semiperpendicularly rounded slope; the pro- and mesopleure

smooth, impunctate. The abdomen a little shorter than the head and thorax united ;

the second segment with distinctly separated punctures all over, its apex and the

following segments covered with a fiery-red, iridescent pubescence; the pygidium

thickly covered with dull fulvous hair. The femora slightly, the tibiz and tarsi thickly,

covered with glistening white hair; the calcaria pale ; the spines fulvous.

This species has the general coloration of M. centralis, but it is smaller; the head

is covered with a brassy pubescence, the apex of the thorax is more rounded, and the

third and following segments want the white macule and are fiery-red.

** Abdomen black. (Species 13-16.)

13. Mutilla centralis.

Ferruginea; capite et abdomine nigris ; antennis rufis, apice late nigro. 9.

Long. 10 millim.

Hab. Guatemata, Paso Antonio 400 feet (Champion); Panama, Volcan de Chiriqui

2500 to 4000 feet (Champion).

Black; the basal half of the antenne, the thorax, and legs red; the knees black ;

the apex of the first abdominal segment, two longitudinal lines on the second segment

reaching beyond the middle, a line on thé apex of the same segment, two longitudinal

lines running from this to the apex of the abdomen, and the edges of the ventral: —

segment, silvery-white. The head coarsely punctured ; the vertex sparsely covered with

long black hairs; above the antenne and behind the eyes more thickly clothed with

272 HYMENOPTERA.

silvery-white hair. ‘The eyes large; the head not much narrowed behind them. The

scape of the antenne bearing white hairs; the third joint twice the length of the

fourth. The thorax not much narrower than the head and not twice its length; the

sides straight, not narrowed towards the apex, which has a semiperpendicular slope,

rounded, the centre truncated; above coarsely rugosely punctured ; the pro- and meso-

pleure smooth, impunctate, glabrous; the fore part of the thorax above with some

black hairs. The sides of the second abdominal segment coarsely punctured, its base

with some long black hairs; the rest of the abdomen sparsely covered with pale hairs;

_ the pygidium thickly covered at the sides with long fulvous hair. The femora sparsely,

the tibie and tarsi thickly, covered with long glistening white. hairs; the calcaria

white; the tibial spines stout, fulvous.

Some specimens of what are probably a variety, from Bugaba, Volcan de Chiriqui,

and Caldera (Champion), differ from the type in having the lines on the second

abdominal segment continued to the end of the segment. I can find no structural

difference between them; but the variety is smaller in size—varying from 5:5 to

7 millim.

14. Mutilla clonia.

Long. 6 millim. 9.

Hab. Guatemata, Pantaleon 1700 feet (Champion).

Similar in coloration to MM. centralis, except that, in addition to the knees, the

femora are broadly black at the apex, and the breast and the lower part of the pleure are

black ; the abdominal markings are pale fulvous, not clear white ; the median segment

has a broad black mark; and the pygidium is ferruginous.

The head wider than the thorax, rugosely punctured; the top with long fuscous

hair, the lower part with the hair shorter and silvery; the eyes large, prominent, the

head obliquely narrowed behind them. ‘The five basal joints of the antenne are

ferruginous; the scape with some white hair; the flagellum with a pale down; the

third joint about one quarter longer than the fourth. Thorax coarsely punctured,

sparsely covered with long black hairs; the sides at the base slightly but distinctly

concave; the median segment with a semioblique slope. The basal segment of the

abdomen with a sharp oblique slope, thickly covered with long pale hair, and at the

apex there is a fulvous band. The second and following segments alutaceous, except

the base of the fifth, which is broadly and finely punctured. At the base of the second

segment are two fulvous marks, which do not reach to the middle, and are dilated

towards the apex; the band on the apex is broad and is dilated at the middle and at

the sides. The fulvous marks on the following three segments form a continuous band.

The pygidium is finely punctured and fringed with long fulvous hair. The ventral

segments are fringed with fulvous hair; the second segment sparsely punctured. The

MUTILLA. 273

legs are thickly covered with glistening white hair; the tibial spines are sharp, long,

and fulvous.

15. Mutilla prominens.

Nigra ; thorace ferrugineo; antennis nigris, basi rufa; abdominis maculis fulvis. ©.

Long. 8 millim.,

Hab. GuateMata, Capetillo (Rodriguez).

Head not much wider than the thorax, rugosely punctured, bearing pale fulvous

hair; the basal half of the mandibles ferruginous, the apical half black; the eyes

moderate in size, not reaching to the top of the head, which is roundly narrowed behind

them. ‘The antennal tubercles and the first three joints of the antenne ferruginous ;

the scape with some white hairs, the flagellum with a pale down; the third joint

nearly twice the length of the fourth. The thorax above coarsely punctured; the

mesopleure impunctate and shining ; the mesonotum in front with fuscous, behind, and

also the median segment, with silvery hair; the sides almost straight; the apex of the

pronotum rounded ; the median segment oblique at the apex, the middle not so strongly

punctured as the sides. The abdomen wider than the thorax; the basal segment

oblique, sparsely covered with long pale hairs; the apex with a belt of pale golden

hair. The second segment is coarsely alutaceous, and covered above with some

blackish, at the sides with silvery, hair; at the base are two large fulvous marks, and

there is a broad fulvous belt at the apex. The third to the fifth segments have a large

squarish mark on either side, not continuous, and those on the fifth unite at the apex.

The pygidium is longitudinally striated and fringed laterally with pale fulvous hair.

The ventral surface is ferruginous ; the segments all punctured at the apex, the second

also sparsely at the base, and fringed at the apex with fulvous hairs. The femora

sparsely, the tibie and tarsi more thickly, covered with pale fulvous-white hair; the

tibial spines long and sharp.

Allied to M. centralis, but smaller, and with the slope of the median segment more

abrupt, the markings on the abdomen golden (not white), and the pygidium longitu-

dinally striolate (not punctured).

‘

16. Mutilla lilea.

Nigra; thorace ferrugineo, subtus et apice nigro-maculatis ; abdominis maculis albis. 9.

Long. 7 millim.

Hab. Panama, San Feliz in Chiriqui (Champion).

Head a little wider than the thorax, finely rugose, covered with long pale hairs, and

on the vertex there is a close pale fulvous pubescence; the basal half of the mandibles

ferruginous. The eyes large, reaching to the top of the head, which is somewhat

obliquely narrowed behind them. The scape of the antenne is distinctly curved and

BIOL. CENTR.-AMER., Hymenopt., Vol. II., February 1894. 2.NN

274 HYMENOPTERA.

bears some white hairs; the third joint is twice the length of the fourth. Thorax

coarsely punctured, the sides nearly straight; the apex of the pronotum semi-transverse ;

the median segment with a rounded rather sharp slope. Above, the thorax bears long

hairs, which are fuscous in front, on the median segment pale. The impunctate meso-

pleure are covered with a short silvery pubescence. The breast, the part immediately

over the coxe, and an elongated broad mark on the median segment, black. The basal

segment of the abdomen becomes gradually dilated to the apex; it is smooth and

impunctate, and bears some long pale hairs, and on the apex there is a band of silvery

pubescence. The second and following segments are alutaceous, and sparsely covered

with long fuscous hairs; on the base of the second segment are two white lines, which

reach a little beyond the middle, and also a white band, dilated in the centre; on each

side of the following segments is a broad mark, the three forming a continuous band.

The pygidium is coarsely alutaceous, densely fringed laterally with long fulvous hair.

The second ventral segment bears widely separated punctures; the other segments are

more closely and finely punctured, and are fringed with white hairs. The legs are

covered with white hair; the knees broadly and the coxe are black; the tibial spines

are long, sharp, and fulvous.

This species resembles UM. prominens, but the markings on the abdomen are white

(not golden); the apex of the median segment has a rounded slope (not sharply

oblique); the breast and a longish mark on the median segment are black; the

pygidium is not striolate ; the antenne are ferruginous, except at the apex; and the

ventral surface of the abdomen is entirely black.

{t+ Legs black. (Species 17-19.)

17. Mutilla oajaca.

Mutilla oajaca, Blake, Trans. Am. Ent. Soc. iii. p. 228, fig. (9 & g)*, and xiii. p. 196°; Cresson,

in Wheeler’s Rep. Expl. and Surv. west of 100th Merid., Zool. p. 709°.

Hab. Norta America, Colorado ?.—MeExico (Sumichrast *).

This species is larger than either of our two others of this section with black legs,

the female being 13 millim. in length. Judging from Blake’s figure ( 2 ), it has the

head wider compared to the thorax than in M. héget; and from both it differs in having

the marks and bands on the abdomen golden, while with our species they are clear

silvery-white. Blake states that sometimes the head may be ferruginous. —

The male is described; it is black, with the abdomen ferruginous and the wings

blackish.

18. Mutilla hogei, (Tab. XIII. fig. 18, 2.)

Nigra ; thorace ferrugineo ; abdomine subtus femoribusque posterioribus rufis ; abdominis maculis albis. 9.

Long. 11 millim. |

Hab. Mexico, Cordova (Hége).

MUTILLA. 275

Black, the thorax red; the underside of the four hinder femora, and the sides and

ventral surface of the abdomen, more or less brownish-red. The head coarsely punc-

tured, sparsely haired ; behind the eyes the hair is thicker, longer, and whiter. yes

of moderate size; the head not much narrowed behind them, and well-developed

there. The scape of the antenne reddish beneath; the third joint one half longer

than the fourth. The thorax quadrate, twice the length of the head, and narrower

than it; the sides broadly contracted inwardly, crenulated; coarsely punctured, above

sparsely covered with short white hair; the pro- and mesopleure smooth, impunctate ;

the apex of the median segment semiperpendicular, truncated, the sides rounded.

Abdomen not much wider than the thorax, about as long as the head and thorax

united ; the second segment coarsely punctured all over; the basal segment with a

distinct striated neck, from which it is gradually dilated to the apex, where it becomes

confluent with the second. The apex of the first segment, the sides and apex of the

second broadly, two longitudinal lines on the latter reaching to the middle, and a broad

mark on the third, fourth, and fifth segments, and the apices of the ventral segments,

silvery-white; the pygidium thickly clothed laterally with fulvous-golden hair. The

femora slightly, the tibiee and tarsi thickly, covered with stiff silvery-white hairs; the

tibial spines thick, blackish, the tarsal spines fulvous; the calcaria white.

A specimen from Rincon in Guerrero (H. H. Smith), apparently belongs to the same

species ; it has the inward curve in the thorax not so deep, the femora entirely black,

the abdomen black, except the apices of the third, fourth, and fifth segments, which

are rufous above in the middle, the scape of the antenne only rufous at the apex, and

the tibial spines rufous. UW. hégei closely resembles VM. centralis, but differs from it in

having the thorax curved inwardly at the sides.

"19. Mutilla porcata. (Tab. XIII. fig. 7, ¢, var.)

Nigra ; thorace ferrugineo; abdomine albo-maculato. 9.

Long. 7-8 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Head distinctly wider than the thorax, coarsely punctured; sparsely covered with

long black, on the oral region with shorter silvery, hair. Eyes large, reaching to the

top of the head, which is sharply and obliquely narrowed behind them. The scape

of the antenne sparsely covered with white hair, the flagellum with a dense silvery

pubescence; the second joint and the antennal tubercle reddish; the third joint one

half longer than the fourth. The thorax covered with long fuscous hair, very coarsely =

punctured, except the mesopleure, which are smooth and impunctate ; the apex of the

pronotum rounded ; the sides of the mesothorax almost straight, rough; the median

segment at the top broadly rounded, the lower part with a steep slope. The abdomen

wider than the thorax. The basal segment short, becoming gradually wider towards

2 NN 2

Foal

276 HYMENOPTERA.

the apex, bearing pale hairs, the sides and apex with a band of white pubescence. The

second segment alutaceous, without distinct punctures, except at the sides; above

rather thickly covered with black hair; the sides have the hairs silvery; at the base

are two white lines, which reach to the middle; the apex and sides have a white band

_ dilated in the middle. The base of the third segment has a finely punctured band;

the rest of it, as are also the other segments, alutaceous, and with a white band on the

sides and blackish hair. The pygidium is punctured, and fringed laterally with long

fulvous hair. The ventral segments are fringed with white hair. The femora and

tibiz are sparsely covered with white hair; the tibial spines slender, sharp, and pale

fulvous ; the tarsi thickly covered with white hair, the spines fulvous.

A variety? (¢), from Caldera, Panama (Champion) (fig. 7), has the white line on

the second abdominal segment continued to the white band on the apex; and the apex

of the first antennal joint, and also the third joint beneath, reddish.

M. porcata is identical in coloration with I. higei, except that the legs have no

red, being entirely black, differing otherwise in the head behind the eyes being sharply

and obliquely narrowed (in M. hégei it is only very slightly narrowed, and not at

all obliquely); the head wider, as compared with the width of the thorax; the thorax

laterally not concave, becoming wider towards the apex, and more thickly covered

with black (instead of pale) hair; the median segment at the top more broadly rounded ;

and the spines on the tibie narrower, sharper, and longer.

c. Head, thorax, and abdomen black. (Species 20.)

20. Mutilla gaumeri. (Tab. XIII. fig. 12, ¢.)

Nigra; capite aureo-hirto, abdomine fulvo-maculato.

Long. 10 millim.

Hab. Mexico, North Yucatan (Gaumer).

Black; the vertex and front covered with a fulvous pubescence; the apex of the first

segment, two oval macule on the base of the second segment, the apex of the latter

broadly, and the sides of the other segments covered with golden-fulvous pubescence.

Head coarsely punctured, narrower than the thorax, retreating sharply behind the eyes,

which are large and reach nearly to the top; the base of the mandibles ferruginous.

The scape of the antenne punctured, and bearing rather long fulvous hair; the

flagellum almost glabrous, ferruginous beneath. Thorax short, about twice the length

of the head, not much dilated towards the apex, convex above, the slope at the base

and apex rather abrupt; coarsely punctured, except the pleura, which are smooth ;

the sides are rough from the punctures, but otherwise are not tuberculate or incised ;

on the median segment the punctures are larger, more irregular, and almost form

reticulations. There is no pubescence on the thorax, but it bears black or fuscous

hair. The abdomen is longer and somewhat wider than the thorax. The first segment

MUTILLA. 277

becomes gradually wider towards the apex and is confluent with the second ; the base

is toothed. ‘The sides of the second segment bear large punctures; the middle of this

segment, and also the others, being impunctate, but rough. The basal ventral segment

is ferruginous, and broadly toothed in the middle; the second segment is coarsely

punctured; the other ventral segments are not so strongly punctured, and they are

fringed with golden hair. ‘The pygidium is rough, black, and laterally bears long

fulvous hair. In addition to the golden pubescence, the dorsum of the abdomen bears

long black hair. Legs black, covered with white hair; the calcaria white; the apices

of the tarsi ferruginous.

2. Males, of which the females are unknown.

i. Kore wings with three cubital cellules. (Species 21-39.)

* Abdomen entirely ferruginous, or with the base more or less blackish ; the head,

thorax, and legs black ; the wings smoky. (Species 21-38.)

+ The basal segment of the abdomen black. (Species 21-33.)

V 91. Mutilla amule. (Tab. XIII. fig. 3, ¢ organ.)

Long. 20 millim. 6.

Hab. Mexico, Amula in Guerrero 6000 feet (H. H. Smith).

Head punctured rather strongly, much narrower than the thorax, densely covered

with long griseous hair, which almost hides the sculpture, the hair being especially

long immediately below the antenne; the clypeus smooth and shining; the mandibles

ferruginous before the apex. The eyes large, the incision wide; the head not much

narrowed behind them. The scape of the antenne punctured, sparsely haired; the

third and fourth joints subequal. The pronotum densely covered with griseous hair,

punctured, the apex broadly arcuate. The mesonotum at the base thickly covered

with griseous, at the apex more sparsely with fuscous, hair; reticulated throughout,

and with two furrows down the centre. The tegule large and shining, produced

behind, the apex not much raised, the base punctured; the mesonotum not exca-

vated alongside of them. The scutellum moderately concave, reticulated, bearing long

pale hair. The median segment above with only a slight slope, the apex abruptly

oblique; reticulated, a V-shaped area at the base, which is thickly covered with silvery

pubescence, the rest of the segment with long fuscous hair. The mesopleure not very

strongly punctured, and densely covered with pale pubescence; the metapleure stoutly

reticulated. The basal segment of the abdomen punctured, covered with long white

hair; the second segment shining, the middle impunctate, the rest of it with widely-

separated punctures ; the sides and apex with rufo-fulvous hair. The other segments

finely punctured at the base; the apex with rufo-fulvous hair. The pygidium rather

“)

278 HYMENOPTERA.

strongly punctured, densely covered with fulvous pubescence; the middle keeled, the

keel ending at the apex in a tooth, flattened laterally, the apex (viewed laterally) being

rounded. The first ventral segment black, laterally punctured; the keel straight; the

apex triangular, projecting; the base triangular. The second ventral segment rather

strongly punctured all over; the other segments finely punctured at the apex. The

hypopygium with the basal half raised above the apical half; at the sides are two

stout oblique keels, ending almost in teeth. The ventral segments are fringed with

rufous hairs. The legs densely covered with white hair. The radial cellule is not

very wide, and reaches beyond the third cubital cellule ; the first and apical abscisse

of the radius curved, the former shorter than the latter; the second cubital cellule at

the base is sharply lanceolate, the third wider at the bottom than at the top; the

second transverse cubital nervure is curved towards the apex, the third sharply angled

above the middle; the first and second recurrent nervures are both received shortly

beyond the middle ; the transverse median nervure is received a little before the basal

nervure.

22. Mutilla exacta. (Tab. XIII. fig. 20, ¢ organ.)

Long. 15 millim. 6.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Agrees exactly in coloration with M. amule, but easily known from it by being

5 millim. less in length; also by the four teeth on the cheeks; the more strongly

gibbous scutellum; the pygidium at the apex having two short stout keels forming a

triangular area, the part enclosed being depressed ; the second segment only finely

punctured at the sides; the radial cellule broader, and the second cubital cellule at the

base not so sharply lanceolate; the first transverse cubital nervure not straight, but

curved ; and the second recurrent nervure received nearer the apex of the wing.

Head narrower than the thorax; the top shining, strongly punctured, sparsely

covered with rather short pale hair, the rest of the head densely covered with longer

white hair, that on the oral region being especially long ; ‘below the antennz the head

retreats inwardly with a steep slope, which is shining and glabrous; at the sides are

two stout, rather long testaceous teeth, behind which is a thick patch of yellow hair,

touching the eyes; the apex of the clypeus rounded. The eyes are large, the incision

wide; the head retreats sharply behind them. The scape of the antenne shining,

very sparsely haired; the flagellum with a scattered pile; the third joint distinctly

longer than the fourth. Prothorax coarsely punctured ; the base with short pale hair,

the apex with a dense band of white pubescence. Mesonotum very strongly punc-

tured, the punctures distinctly separated, deep, roundish or elongate; thickly covered

with short dull rufous hair. The tegule large, projecting behind; the base shining,

impunctate, the apex thickly covered with pale fulvous hair. The scutellum strongly

MUTILLA. 279

gibbous, coarsely punctured, and covered with long pale hair. The median segment

reticulated ; there is a thick mass of white hair at the base, which extends obliquely

to the sides; the rest of the segment with a short white pubescence, and with long

pale hair; the apex has an oblique slope, and at its top in the middle is a short

roundish shining tubercle. ‘The propleure are strongly punctured in the middle; the

mesopleure densely covered with white hair, hiding the sculpture; the apex of the

metapleure reticulated. The basal segment of the abdomen punctured, the base

strongly toothed; black, except at the apex, sparsely covered with long white hair.

The second segment at the sides with scattered very minute punctures; the apex

thickly fringed with rufous hair. The other segments at the base finely and closely

punctured, and covered with rufous hair. The pygidium punctured, except down the

middle, which terminates in two short stout keels, enclosing a depressed triangular

area. The first ventral segment broadly keeled, depressed in the middle; a small

round fovea on either side at the base, and with some large round punctures down the

sides. The second ventral segment with scattered punctures; the others with finer

and closer punctures, and fringed with short fulvous hair. The hypopygium punctured

laterally, covered with fulvous hair; the apex projecting, in the middle raised; the

sides terminating in stout blunt teeth. Legs covered with rather long white hair.

The wings are lighter-coloured at the base, and have white lines throughout; the

radial cellule is wide and does not extend much beyond the third cubital; the basal

and apical abscisse of the radius are both curved, the former being a little the shorter

of the two. ‘The first transverse cubital nervure is curved at the base; the second

cubital cellule at the top is somewhat shorter than the space bounded by the first

transverse cubital and the first recurrent nervures; the third cubital cellule at the top

is a little shorter than at the bottom ; the second transverse cubital cellule is roundly

elbowed in the middle, the third broadly curved, but with the upper part straight.

The transverse median nervure is received distinctly in front of the basal nervure. The

first recurrent nervure is received shortly beyond the middle, the second in the apical

fourth of the cellules.

The male of I. oajaca as described by Blake agrees with this species in coloration,

and almost in size; but the structure of the pygidium is not mentioned by him, nor

does he describe any peculiarity about the face. The head and thorax of M. oajaca

are described as being clothed with “scattered pale yellowish pubescence,” the

pubescence on the metathorax (median segment) “black,” and there is no mention of

a tubercle; the first cubital cellule is said to be about as “long as the marginal”

(radial), which is certainly not the case with our species.

J 93. Mutilla connexa. (Tab. XIII. fig. 21, ¢ organ.)

Long. 138-14 millim. ¢.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

280 HYMENOPTERA.

This insect is identical in coloration with the foregoing (IZ. exacta and M. amule),

but it may be easily separated from either of them by the very different structure of

the pygidium. This has, along the sides, a distinct keel, and in the middle at the

apex are two short, stout keels, which do not unite at the apex. The oral region is

normal and bears no teeth ; the wings are hardly lighter at the base, and are more

deeply violaceous; the first cubital cellule is longer compared to the radial ; and the

tubercle on the median segment is stouter.

Head narrower than the thorax; the vertex sparsely covered with long blackish

hairs and laterally with a whitish pubescence; the cheeks and the oral region densely

covered with long white hair; the apex of the clypeus rounded, shining ; the cheeks

laterally ending in two blunt piceous roundish short tubercles. The eyes large,

reaching quite to the top of the head, the incision wide; the head only moderately

developed behind them and rather sharply narrowed. The scape of the antenne has

short white sparse hair above, the flagellum a brownish microscopic pile; the third

joint is, if anything, longer than the fourth. The prothorax is coarsely punctured, its

apex with a dense band of white pubescence, and almost truncated in the middle.

Mesonotum shining, and having large irregular, mostly widely separated, punctures,

its hair long and black. The tegule large and shining, the underside with pale fuscous

hair; they are not much developed posteriorly. The scutellum broadly convex,

coarsely punctured ; the base with some long black hairs, the rest covered more thickly

with long white hair. The median segment reticulated, distinctly narrowed towards

the apex, which has an oblique slope, the top of the slope, however, being rounded; at

the base in the middle is an elongated area, rounded at the apex, where it terminates

in a tubercle ; at its sides at the extreme base is a small elongate depression, densely

covered with pale pubescence; the rest of the segment with whitish hair, and at the

sides above there is a white pubescence. The basal region of the propleure strongly

punctured, the apex excavated, crenulate at the base below; the mesopleure punc-

tured, densely covered with white pubescence; the metapleure at the apex punctured.

The basal segment of the abdomen black at the anterior half, shining, with some

widely separated, scattered punctures; the base stoutly toothed ; the second segment

with some indistinct scattered punctures along the sides, at the apex fringed with

rufous hair; the other segments with their basal halves impunctate, their apical halves

clothed with rufous hair. The pygidium punctured, except at the middle before the

keels; down the sides run stout keels, and in the middle is a small depressed area

bounded by stout keels, which are curved and unite at the apex; the hair is rufous

and rather long. The hypopygium is punctured at the sides; the apex terminates in

three rounded projections, in front of which is a stout raised, oblique point, this being

rounded at the end. ‘The basal ventral segment is distinctly keeled in the middle,

which is slightly waved; the sides with a few punctures. The second ventral

segment is punctured ; the others are impunctate and fringed with fulvous hair. The

legs thickly covered with long glistening white hair. The wings are lighter along the

MUTILLA. . 281

costal cellule. The radial cellule is wide, and as long as the first cubital. The first

abscissa of the radius is slightly curved and shorter than the apical, which is also

curved and almost roundly elbowed at the top. The first transverse cubital nervure is

curved widely, the second slightly, the third elbowed near the bottom and at the

middle, where the nervures are emitted. The second cubital cellule at the top is

shorter than the space bounded by the first transverse cubital and the first recurrent

nervures; the third cellule is wider at the bottom than at the top. The first recurrent

nervure is received shortly before the middle, the second in the apical third of the

cellules.

This insect also agrees with MW. oajaca (3 ), and has, like it, the first cubital cellule

as long as the radial; but the head and thorax in WM. oajaca have “scattered pale

yellowish pubescence,” the median segment has “scattered black pubescence,” the

abdomen is “finely punctured,” the basal segment is “ black,” the third cubital cellule |

is “ subpentagonal” (in the present species it is really hexagonal), and the hair on the

legs is “ pale yellowish.”

\f 24. Mutilla vanduara.

Long. 12-13 millim. ¢.

Hab. Mexico, Chilpancingo in Guerrero 4600 feet (H. H. Smith).

Head moderately strongly punctured, the punctures distinctly separated; densely

covered with griseous hairs, which hide the sculpture, except on the vertex; the apex

of the clypeus truncate in the middle; the mandibles ferruginous before the apex, the

base densely covered with long white hair. ‘The eyes are large; the head not much

developed behind them, and roundly narrowed; the incision wide, oval. The scape of

the antennz is densely covered with glistening white hair, its extreme apex ferruginous ;

the flagellum is covered with a dull microscopic pile; the third joint is equal in length

to the fourth. The thorax is as wide as the head; the pronotum punctured and densely

covered with a griseous-white pubescence, which is densest at the apex. ‘The meso-

notum is shining, marked all over with large, elongate punctures; there are two furrows

down the middle; at the base there is some white pubescence, the rest of it with

blackish hair. The tegule very shining, the inner side at the apex with whitish

pubescence; the apex piceous. The scutellum flattish, coarsely rugosely punctured,

and bearing long white hairs, especially at the apex. The median segment is reticu-

lated, and has a gradually rounded slope to the apex; the base with a dense white

pubescence, the rest covered thinly with long pale hair; the basal area elongate,

narrowed towards the apex; there can hardly be said to be a tubercle at its apex. The

propleure rather strongly punctured, covered with a whitish pubescence, the apical

depression crenulated throughout. The mesopleure punctured, but hardly so strongly

as the propleure, densely covered with white hair; there is a shining depression at the

BIOL. CENTR.-AMER., Hymenopt., Vol. II., February 1894. 2.00

282 | HYMENOPTERA.

base. The apex of the metapleure strongly reticulated; the rest impunctate, except a_

punctured wedge-shaped part in the middle, which does not extend to the top. The

legs (especially the tibiz and tarsi) densely covered with long white hair; the femora

with scattered punctures; the tibial spines are fulvous, the calcaria white. ‘The basal

segment of the abdomen entirely ferruginous, except the extreme base and the teeth,

which are stout; it has scattered punctures and is covered with long white hairs. The

second segment with fine scattered punctures; the base slightly depressed and more

closely and strongly punctured, and fringed with rufous hair. The other segments

finely punctured and fringed with rufous hair. The pygidium punctured, rather densely

covered with long fulvous hair; the apex is oblique ; down the centre of it there is an

area, which is open at the apex and rounded at the base, the keel forming it curving

round at the bottom and going along the edges. ‘The first ventral segment punctured,

at the base projecting in the middle in a blunt tooth, at the apex triangular, oblique ;

the second segment with some rather large punctures; the other segments finely punc-

tured. The hypopygium has a moderately stout keel, raised at the base into a blunt

tooth ; inside of these towards the apex are two flat, brown, curved teeth; its apex is

transverse. ‘The wings are lighter coloured at the base; the radial cellule does not

extend beyond the third cubital, is moderately wide, and longer than the first cubital ;

the basal abscissa of the radius is straight, oblique, and shorter than the apical, which

is elbowed near the top; the second cubital cellule at the top is about the length of the

space bounded by the first transverse cubital and the first recurrent nervures; the third

cubital cellule is narrower at the top than at the bottom; the first transverse cubital

nervure is broadly, the second sharply curved, the third sharply angled above the middle ;

the transverse median nervure is recurved in front of the basal.

N 25. Mutilla talus.

Long. 12 millim. 6.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Head not much narrower than the thorax, apparently coarsely punctured, the sculp-

ture hidden by a dense glistening white pubescence, except round the ocelli; the clypeus

shining, impunctate, the apex broadly rounded; the mandibles dull ferruginous before

the apex. The eyes are large, the head very slightly developed and narrowed behind

them. The prothorax with scattered punctures; the base without much pubescence,

the apex, however, having a dense broad band of whitish pubescence. The mesonotum

with large, deep, distinctly separated punctures; there is an indistinct keel down the

middle, and on either side of this a furrow. The scutellum is moderately convex, and

it bears large punctures and a dense covering of long glistening white hair. ‘lhe tegule

project behind ; the basal half shining, glabrous, the apical half with a dense covering of

griseous hair, except on the extreme outer edge. ‘The median segment reticulated, and

MUTILLA. 283

with a gradually rounded slope to the apex; covered with long pale hair; the basal

area elongate, curved inwardly before the apex; the apical tubercle shining, not very

distinct. The basal segment of the abdomen shining, and with some large, widely

separated punctures and some longish hair; the extreme apex ferruginous and fringed

with rufous hair. The second segment shining, the sides with some shallow scattered

punctures; the apex, as also the other segments, fringed with rufous hair; the other

segments indistinctly punctured at the base. The pygidium punctured in the middle,

covered with rufous hair; down the sides is a broad keel, which becomes more distinct

and wider towards the apex; and there is a still broader central keel, the apex of which

is bluntly rounded. The basal ventral segment is keeled down the centre and slightly

depressed ; the sides with some large punctures. ‘The second segment with some fine

scattered punctures, and with a transverse row of larger ones before the apex. The

other segments bear some fine punctures and a sparse fringe of fulvous hair. The base

of the hypopygium is raised, and triangular at the apex of the raised part; the apex is

depressed and in the middle projects into a triangle. ‘The radial cellule is wide and

longer than the first cubital; the basal abscissa of the radius is straight and oblique,

the apical abscissa curved, and slightly elbowed at the top. The second cubital cellule

is narrower at the top than the space bounded by the first transverse cubital and the

first recurrent nervures; the third cubital cellule at the top is as wide as the space

bounded by the second transverse cubital and the second recurrent nervures; the third

transverse cubital nervure bulges out in the middle. The recurrent nervures are

recurved about the same distance beyond the middle of the cellules. The transverse

median nervure is received before the basal.

/ 26. Mutilla clutha.

Long. 12 millim. gd.

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

Head coarsely punctured, densely covered all over with glistening white hair; the

clypeus with an oblique slope to the apex, which is transverse, the sides oblique; the

mandibles piceous at the subapical tooth. The eyes large, the head moderately deve-

loped behind them, and roundly and rather sharply narrowed ; the incision wide, semi-

oblique. The scape of the antenne punctured, moderately covered with white hair ;

the flagellum with a whitish pile; the third and fourth joints subequal. The pronotum

rather strongly punctured; the base with long pale hairs; the apex with a dense band

of white pubescence. The mesonotum shining, the punctures large and elongate ;

there are two furrows and also a smooth shallow keel down the sides; the hair is

sparse and blackish. ‘The tegule large, shining, dilated behind; the apex on the inner

side thickly covered with greyish hair. The scutellum flattish, not much raised over

the mesonotum, covered with large, distinctly separated punctures, the apex with long

2:00,2

284 HYMENOPTERA.

white hair. The median segment with a gradually rounded slope to the apex, reticu-

lated, covered with long white hair, the base with a dense white pubescence; the area _

elongate, not much narrowed towards the apex, where the tubercle is moderately distinct.

The propleure scarcely excavated behind, above with large punctures; the sculpture

of the mesopleure hidden by the dense silvery pubescence; the metapleure reticulated

behind. The basal segment of the. abdomen shining, bearing large, round, widely

separated punctures, there being a ring of punctures at the apex, the hair sparse and

long; the second segment almost impunctate; the other segments finely punctured on

the apical half and fringed with fiery-ferruginous hair. The pygidium punctured closely

and broadly at the base and sides, the apical part in the middle bluntly and slightly

ridged, the apex perpendicular; down the centre is a slight keel, ending at the top

and bottom in a distinct blunt tooth, the lower tooth being the larger. At the base of

the first ventral segment are three broad keels—the basal two shining and bluntly

pointed at the apex, the apical one opaque and rounded; the central keel slightly

raised at the apex; the sides a little hollowed and with some large punctures. The

second ventral segment has a few punctures; the other segments are punctured on the

apical half and bear long white hair. The hypopygium has the centre raised, smooth,

and shining, except for some punctures, this raised central part becoming gradually

narrowed to the apex, which ends in a point; there is a distinct furrow down the outer

edge; the sides are covered with long pale hair. The wings are uniformly fuscous,

with a faint violaceous tinge. The radial cellule extends beyond the apex of the third

cubital, and it is moderately wide; the first abscissa of the radius is straight and sharply

oblique, the apical one being about one fourth longer than it and slightly curved.

The first transverse cubital nervure is oblique and a little curved, the second is perpen-

dicular and slightly curved, and the third is angled at the middle. The first recurrent

nervure is received close to the middle, the second at a greater distance from it; the

third cubital cellule at the bottom is a little longer than it is at the top. The trans-

verse median is received shortly in front of the basal. The legs are covered with long

white hair; the tarsal spines are fulvous.

27. Mutilla osberti.

Long. 13 millim. 6.

Hab. Mexico, Teapa in Tabasco (H. .H. Smith).

Head coarsely punctured, thickly covered with greyish-silvery pubescence, more

sparsely on the vertex, which bears also long fuscous hair; the clypeus shining, impunc-

tate, glabrous, the apex depressed and rounded; the mandibles entirely black. The

eyes large, the head roundly narrowed behind them. The scape of the antenne punc-

tured, sparsely covered with white hair; from the middle it becomes gradually dilated

to the apex, the apex being almost keeled on the underside and impunctate; the

flagellum with a dull pile; the third and fourth joints equal in length. The pronotum

MUTILLA. 280

coarsely punctured; the sides in front rounded, behind almost oblique to the middle,

which is bluntly rounded. The mesonotum with large, elongated, roundish punctures,

which almost form reticulations; its hair rather thick and fuscous in colour. The

scutellum broadly and moderately convex, coarsely punctured, and covered with long

fuscous hair. The tegule are large, broad, projecting behind; the base glabrous, the

apex thickly covered with dull silvery hair. The median segment has a gradually

rounded slope to the apex; reticulated, the reticulations large and roundish ; the central

area elongated, reaching beyond the middle; the sides curved at the middle and at the

apex; the base has a whitish depressed pubescence; the sides have long silvery white

hair. The propleure excavated, at the base irregularly striolated ; the central part of

the mesopleure is covered with large shallow punctures and with silvery pubescence ;

the base of the metapleure impunctate, the rest reticulated. The basal segment of the

abdomen with large punctures, and covered with long white hair; the second segment

with scattered punctures; the other segments more closely punctured, except at the

base, and fringed with fiery-ferruginous hair. The pygidium punctured, covered with

pale fulvous hair; the apex in the middle at the top and bottom terminates in stout

teeth, the space between them being roundly incised; the sides towards the apex are

keeled and terminate in an indistinct tooth. The first ventral segment is flattened at

the base, raised at the apex, and in the centre are several keels; the apex is punctured ;

the central keel is depressed in the middle. The second ventral segment is rather

strongly punctured, except at the apex. The hypopygium is rather strongly punctured.

Legs thickly covered with white hair. Wings fuscous; the apex much deeper-coloured

than the basal portion. ‘The radial cellule not reaching beyond the apex of the third

cubital cellule, wide; the first abscissa of the radius straight, oblique, shorter than the

third, which is curved; the first cubital cellule is longer than the second; the first

transverse cubital nervure is oblique and with a slight curve, the second roundly curved,

the third very sharply angled above the middle; the first recurrent nervure is received

a little beyond the middle, the second almost in the apical fourth; the transverse

median nervure is received in front of the basal.

This species may be easily known from all the others here described by the scape of

the antenne being dilated broadly at the apex, and by the middle of the pygidium

_ being incised laterally and ending at the top and bottom in teeth.

J 28. Mutilla xrolla,

Long. 15 millim. ¢.

Hab. Mexico, Dos Arroyos in Guerrero (H. H. Smith).

Head coarsely punctured, covered with golden pubescence, more sparsely in the centre

of the vertex, which bears long fuscous hair; the apex of the clypeus projecting, the

sides oblique, the centre with five indistinct tubercles, which do not project over the

apex; the mandibles punctured, piceous before the apex. The eyes large, the head

286 HYMENOPTERA.

not much developed behind them and roundly narrowed. The scape of the antenne

shining, sparsely punctured, and haired, grooved on the lower side, the apex ferruginous ;

the flagellum with a fuscous pile; the third joint, if anything, longer than the fourth.

The pronotum coarsely punctured, covered with golden pubescence ; the sides of the apex

oblique, the middle narrow and almost transverse. The mesonotum shining, covered

with Jarge elongated punctures, and bearing dark fuscous erect hair. Scutellum

coarsely punctured, moderately convex; the apex bearing long pale golden hair. The

tegule are large and wide, and project behind; the apex piceous, and covered with pale

hair. The median segment has a gradually rounded slope to the middle and an oblique

slope at the apex ; strongly reticulated, the base with depressed golden pubescence, the

rest with rather long pale golden hair; the central area is wide, reaches to the middle,

and is rounded at the apex. The propleure not excavated, strongly punctured, except

in the middle; the mesopleure punctured and covered with golden pubescence; the

apex of the metapleure reticulated and covered with pale golden hair. The first abdo-

minal] segment with widely separated punctures, except in the middle, shining, sparsely

covered with pale golden hair; black, except at the extreme apex. The second segment

with scattered punctures, except in the middle; the other segments more closely punc-

tured, and covered with fiery-red hair. The pygidium punctured, covered with fulvous

hair, the middle roundly keeled posteriorly, becoming broader towards the apex, which

is oblique; the sides are bluntly toothed. The basal ventral segment is entirely black ;

the sides are punctured ; the keel is impunctate, and only very slightly depressed in the

middle. ‘The second segment with scattered punctures, except in the middle towards

the base ; the other segments closely punctured. The hypopygium punctured ; the

apex transverse. The legs covered with pale fulvous hair. The wings are violaceous

throughout. The radial cellule reaches to the apex of the third cubital; the basal

abscissa of the radius is straight, oblique, and shorter than the third, which is curved ;

the first cubital cellule is longer than the second; the first recurrent nervure is received

shortly beyond the middle, the second in the apical fourth of the cellule ; the third trans-

verse cubital nervure is angled below the middle; the top of the third cubital cellule

is a little more in length than the space bounded by the second recurrent and the third

transverse cubital nervures.

The golden colour of the hair on the head and thorax and the crenulated apex of the

clypeus are characteristic of this species.

“29. Mutilla ardens.

Muitilla ardens, Gerst. Archiv f. Naturg. xl. p. 323".

Hab. Mexico}.

/ 30. Mutilla fulviventris.

‘Mutilla ‘fulviventris, Gerst. Archiv f. Naturg. xl.-p. 323}.

Hab. Mexico}.

MUTILLA. 287

Tam unable to recognize either this or the preceding species amongst our Mexican

Mutillide, no mention being made of the form of the apical abdominal segment or of

the clypeus. MM. ardens has the pubescence “ yellowish”; and M. fulviventris the

scape of the antenne “apicem versus subdilatato.”

J 31. Mutilla psyra.

Long. 10 millim. ¢.

Hab. Mexico, North Yucatan (Gaumer).

Head coarsely, rugosely punctured, sparsely covered with short pale hair, more thickly

on either side of the base of the antenne ; the part over the clypeus projecting, smooth,

shining, and glabrous, the apex rounded ; the mandibles entirely black. The scape of

the antenne grooved on the inner side, shining, and bearing a few hairs; the flagellum

brownish on the lower side towards the apex; the third joint thinner and distinctly

longer than the fourth. The pronotum sparsely covered with dull silvery hair, and

marked with large, deep punctures, the apex broadly rounded in the middle; the

mesonotum coarsely punctured, sparsely covered with short fuscous hair; the scutellum

moderately convex, coarsely punctured, narrowed slightly and depressed towards the

apex, where it bears long white hair, the transverse depression at its base wide and

deep. The median segment has a gradually rounded slope to the apex; coarsely

reticulated, sparsely covered with pale hair, the base being without the usual

patch of depressed pubescence; the median area curved inwardly before and behind

the middle; the apex rounded, the reticulations on either side of it longer than

usual. ‘The propleure reticulated, except behind and in front; the mesopleure

with large deep punctures, and covered with silvery hair; the metapleure reti-

culated, except in front and on an oblique stripe down below the middle. The

tegule are large, shining, and glabrous. The basal segment of the abdomen is

black, except at the apex; it has large, round, scattered punctures, except in the

middle at the apex, and is very sparsely covered with short white hairs. ‘he second

segment is depressed at its junction with the first; it is rather strongly punctured,

except in the middle towards the apex, the punctures being larger towards the base.

The other segments are finely punctured, except at the apex, and are fringed with fiery-

ferruginous hair. The pygidium is strongly punctured and covered with fuscous or pale

hair; the middle towards the apex is raised and ends in a blunt tooth, from which a

keel runs down to the bottom, the apex being oblique; the sides from about the middle

are bluntly keeled. The first ventral segment has the keel a little depressed in the

middle, and it is not dilated at the base; the segment behind it is transverse, and has

two elongated large fovee, closely united. The second ventral segment has large,

elongated, widely separated punctures. The other segments are finely punctured and

fringed with long pale hair. From the middle of the hypopygium run two stout

curved keels, which converge towards the apex, this part being transverse. The wings

288 HYMENOPTERA.

are fuscous, with a slight violaceous tinge. The radial cellule is moderately wide, and

hardly reaches to the apex of the third cubital cellule ; the first abscissa of the radius

is slightly, the apical abscissa roundly, curved. The first transverse cubital nervure

is oblique and hardly curved; the second is roundly curved in the middle; the third

is sharply angled a little above the middle. Both the recurrent nervures are received

shortly beyond the middle of their respective cellules. The third cubital cellule is wide

and at the top is only slightly narrower than it is at the bottom. The transverse median

nervure is almost interstitial.

M. psyra has the head and thorax less pilose than in any of the other species I

have described.

~ 32. Mutilla orthona. (Tab. XIII. fig. 26, ¢ organ.)

Long. 8 millim. 6.

Hab. Panama, San Feliz in Chiriqui (Champion).

Head, if anything, narrower than the thorax, apparently coarsely punctured, the

sculpture hidden by a thick covering of silvery hair; the clypeus shining, glabrous, the

apex broadly rounded ; the tips of the mandibles ferruginous. The eyes reaching to the

top of the head; the head not much developed behind them, and roundly narrowed. The

scape of the antenne shining, and with a few punctures and hairs; the flagellum with

a dull microscopic pile; the third joint a little longer than the fourth. The pronotum

punctured, the apex with a dense band of dull silvery hair; at the apex itis oval. The

mesonotum coarsely punctured, and sparsely covered with dull ferruginous hair; the

scutellum coriaceous, and covered with long white hair. The tegule large, the basal

half smooth and glabrous, the apical half densely covered with long white hair. The

median segment coarsely reticulated, the base in the middle with dense white pubes-

cence ; at the base there is a central area, rounded at the apex, and this is bordered by

another area on either side, these having the apex lanceolate—they join the central

area obliquely, and do not reach its apex. The mesopleure are densely covered with

silvery hair, hiding the sculpture; the metapleure are reticulated. The basal segment

of the abdomen is black, except at the apex; it bears large punctures and long white

hair; the basal teeth are stout, conical. The second segment has some punctures at

the sides towards the base. The other segments are slightly punctured at the base, and

are fringed with long fiery-red hair. The pygidium is punctured at the base; the apex

in the middle has a stout tooth; there is a keel at the sides towards the apex ; the hair

is long and thick. ‘The basal ventral segment is thickened in the middle throughout

and hardly depressed ; the second segment has some large widely separated punctures;

the other segments are more finely punctured at the base. The hypopygium is depressed

in the middle at the apex. ‘The legs are covered with silvery hair; the calcaria are

MUTILLA. 289

white, the tarsal spines ferruginous. The wings are fuscous, and with fuscous nervures.

The radial cellule hardly reaches to the apex of the third cubital; the first abscissa

of the radius is oblique, straight, and shorter than the apical, which is curved at the

termination. The second cubital cellule is as long as the first, and is dilated at the

apex; the top is hardly so long as the part bounded by the first transverse cubital and

the first recurrent nervures ; the third cubital cellule is sharply angled in the middle

at the apex, the top not half the length of the bottom. The first recurrent nervure

is received a little beyond the middle of the cellule; the second is almost interstitial.

The transverse median nervure is received distinctly before the basal.

~ 83, Mutilla ordinaria.

Mutilla ordinaria, Smith, Descr. of New Species of Hymen. p. 225 (1879)'; Blake, Trans. Am.

Ent. Soe. xii. p. 204’.

Hab. Mexico, Orizaba!.

I am unable to recognize this species from the description. Smith neither mentions

the form of the eyes nor of the basal segment of the abdomen, and it might, so far as

the description goes, be a Spherophthalma; but Blake? places it in this section of

Mutilla. The basal segment of the abdomen is black; the median segment has “ large

shallow punctures.”

++ The basal segment of the abdomen ferruginous. (Species 34-38.)

v 34. Mutilla thura. (Tab. XIII. fig. 19,3 organ.)

Long. 10 millim. <6.

Hab. Panama (Boucard).

Head hardly so wide as the thorax, shining, the vertex sparsely, the rest thickly

covered with silvery hair; the vertex with moderately large, distinctly separated

punctures ; the clypeus shining, the apex with three rather broad teeth; the mandibles

entirely black. The scape of the antenne rather closely covered with silvery hair; the

flagellum stout, the joints closely united and covered with a dull microscopic pile; the

third and fourth joints subequal. The pronotum punctured; the apex hardly oval,

the sides being oblique; the band of hair broad and thick. The mesonotum covered

with elongated punctures, and having also two furrows down the centre; the hair

blackish. The scutellum moderately convex, the punctures large, the hair sparse and

whitish. The median segment has a gradually rounded slope to the apex; it is shining

and irregularly reticulated, the reticulations larger at the base, which is covered densely

with silvery pubescence; the central area is larger and wider than usual, its apex

rounded. The propleure punctured at the base; the mesopleure punctured in the

middle and densely covered with silvery hair; the metapleure reticulated at the apex.

The basal abdominal segment is sparsely punctured and is entirely ferruginous, except

BIOL. CENTR.-AMER., Hymenopt., Vol. II., February 1894. 2 PP

290 HYMENOPTERA.

the teeth, which are black and very stout. The second segment sparsely punctured ;

the other segments more finely and closely punctured at the base, and fringed

with long fiery-ferruginous hair (the apical segment is missing). The basal ventral

segment is ferruginous, the keel extends to the apex and is triangular at the base; the

other segments have scattered punctures. ‘The legs covered with white hair ; the tarsi

reddish, densely covered with white hair, their spines reddish. The radial nervure

hardly reaches the apex of the third cubital cellule ; the basal abscissa of the radius

straight, oblique, a little shorter than the apical, which is roundly curved. ‘The second

cubital cellule is shorter than the third and is slightly dilated in the middle; the

recurrent nervure is received nearly in the middle. The third cubital cellule is angled

above the middle; the top equals in length the space bounded by the second trans-

verse cubital and second recurrent nervures, the latter being received in the apical third

of the cellule. The basal nervure is almost interstitial.

M. thura may be known from M. chroma and MM. orthona by the hair on the vertex

being much less dense ; also by the toothed clypeus, the much more elongated punc-

r on the mesonotum, and the longer and wider area on the median segment.

35. Mutilla forreri, (Tab. XIII. fig. 24, ¢ organ.)

Long. 8-12 millim. ¢.

Hab. Mexico, Presidio de Mazatlan, Ventanas in Durango (forrer).

Head narrower than the thorax, densely covered with long pale fulvous pubescence,

which hides the sculpture. The eyes large; the head not much narrowed behind

them. The antenne black, the scape densely covered with griseous hair; the flagellum

with a sparse pile; the third joint a little longer than the fourth. The pronotum

densely covered with pale fulvous pubescence, arcuate behind. The mesonotum

sparsely covered with a blackish pubescence; the middle irregularly reticulated, the

sides strongly punctured, a longitudinal furrow separating the two parts. The tegule

large; the fore part broadly concave; the posterior part in the form of a rounded leaf-

like expansion, raised and reddish at the margin ; the mesonotum along the sides of the

tegule deeply excavated. The scutellum broadly convex, coarsely punctured, covered

with long pale fulvous hair. The median segment at the base semioblique, the apex

abruptly oblique; the base densely covered with pale fulvous pubescence, hiding the

sculpture ; the apical region reticulated. ‘he mesopleure moderately strongly punc-

tured, densely covered with griseous hair; the metapleure reticulated. The basal

segment of the abdomen shining, sparsely covered with long, soft, fuscous hair, marked

all over with large, distinctly separated punctures; at the base are two stout, broad

black teeth directed forwards. The other segments have the punctures smaller and

closer, and are, at the apex, fringed with reddish-fulvous hair. The pygidium is

rather strongly punctured, except an impunctate space in the middle; the sides with

long reddish-fulvous hair; the extreme apex is depressed and roundly incised in the

MUTILLA. 291

middle; the raised part behind it has a perpendicular slope and is distinctly margined

at the top, which is black. The first ventral segment is black at the base, where

laterally there are some stout keels; the keel is distinct and straight, and ends in a

triangular tooth. The apex of the hypopygium is roundly incised ; towards the apex

in the centre there is a triangular projection, ending in a blunt tooth. The legs are

densely covered with. pale hair; the calcaria are white. The radial cellule is very

broad, and extends beyond the third cubital cellule; the basal abscissa of the radius is

oblique and shorter than the apical, which is broadly elbowed in the middle. The

second cubital cellule at the top is a little wider than the space bounded by the first

recurrent and the second transverse cubital nervures; at the top the third cubital

cellule is about half the length of the bottom, and a little longer than the space bounded

by the second recurrent and the third transverse cubital nervures. The first and

second transverse cubital nervures are curved, the third sharply elbowed above the

middle. The transverse median nervure is received in front of the basal nervure.

This species may be known from most of the others with reddish abdomen by the

basal abdominal segment not being black, the black teeth at its base stout, its apex

distinctly and sharply depressed, and roundly incised in the middle. In having the

base of the abdomen red and the apex of the pygidium excised it agrees with MZ. chroma

(¢), but that species is smaller and more slenderly built. IZ. chroma also has the wings

more lightly coloured; the first recurrent nervure received nearer the middle, so that

the top of the second cubital cellule is equal to the space bounded by the first recurrent

and the first transverse cubital nervures (the latter, too, being longer than the top in

M. forreri) ; and the second recurrent nervure received in the middle of the cellule

(in M. forrert beyond the middle). Structurally, they may be easily separated by the

keel on the basal ventral segment in M. chroma abruptly projecting at the apex into

a tooth; while in UM. forreri the keel gradually raises from the base to the apex,

without projecting into an upraised tooth.

36. Mutilla chroma. (Tab. XIII. fig. 22, 3 organ.)

Long. 10 millim. 4g.

Hab. Mexico, Presidio de Mazatlan (Lorrer).

Head narrower than the thorax, densely covered all over with a thick dark silvery

pubescence, and on the vertex with long pale fuscous hair, the sculpture hidden by the

hair; the apex of the clypeus rounded; the mandibles piceous before the apex.

Behind the eyes the head is not much developed and not much narrowed. The scape

of the antenne covered with rather long silvery hair; the flagellum with a dull pile,

its basal joints closely united, the third joint very slightly longer than the fourth.

The pronotum punctured; its apex bluntly angulated in the middle, covered with a

broad belt of silvery pubescence, the rest with longish hair. The mesonotum rather

shining, coarsely, rugosely punctured, sparsely covered with blackish hair. The

2 pp 2

292 HYMENOPTERA.

scutellum slightly convex, rugosely punctured, covered with long pale hair. The

median segment with a gradually rounded slope to the apex, reticulated; the base

with a dense band of silvery pubescence, the rest with pale fuscous hair. The pro-

pleure deeply excavated, the base and apex with stout strie; the mesopleure with

scattered punctures, and covered with whitish hair; the apex of the metapleure

reticulated. The tegule are large, covered with silvery pubescence, but more densely

at the apex, which is piceous. The basal segment of the abdomen is entirely ferrugi-

nous, except the stout teeth, which are black ; it has scattered punctures and a sparse

covering of white hair. The second and following segments have scattered punctures,

and at the apex are fringed with fiery-ferruginous hair. The pygidium is more strongly

punctured than the other segments; there is an indistinct broad keel down the middle,

terminating in a distinct transverse keel, from which the apex sinks almost perpendicu-

larly, this part being also keeled, the extreme apex projecting ; at the apex it is covered

with long white hair. The middle of the basal ventral segment is black; the base of

the keel is triangular, the apex projecting upwards. The second segment is almost

impunctate, except a depressed transverse line of large punctures at the apex. The

other segménts are finely punctured at the apex, and fringed with silvery hair. The

hypopygium is almost transversely margined at the apex, and is without any peculiarity.

The wings are fuscous, but not deeply. The radial cellule is wide; the basal and apical

abscissee are both curved, the latter a little shorter than the former. The first cubital

cellule is longer than the second, which at the top is not much longer than the space

bounded by the second transverse cubital and the first recurrent nervures. The third

transverse cubital nervure is sharply angled in the middle; at the top the third cubital

is about the length of the space bounded by the second recurrent and the third trans-

verse cubital nervures. The basal nervure is subinterstitial.

J 37. Mutilla prema.

Long. 12 millim. ¢.

Hab. Mexico, Acaguizotla in Guerrero 3500 feet (H. H. Smith).

Head narrower than the thorax, coarsely punctured, moderately well developed

behind the eyes and roundly narrowed there; the vertex covered with long fuscous

hair, the other parts with dense silvery pubescence, which has a faint fulvous

tinge; the part above the clypeus oblique; the clypeus slightly incurved at the

apex, the sides oblique; the mandibles towards the apex rufous, the base punc-

tured and covered with pale fulvous hair. The scape of the antenne densely

covered with white hair, the apex oblique; the base of the second joint also obliquely

narrowed ; the third and fourth joints subequal. The pronotum is coarsely punctured

and clothed with long silvery hair, the apex with a broad dense band of pale fulvous

pubescence; the sides of the apex are oblique; the middle bluntly rounded. The

mesonotum shining ; the hair fuscous; the punctures large, deep, mostly longer than

MUTILLA. 293

broad, and in great part separated from each other; down the centre run two furrows.

The scutellum coarsely punctured, covered all over with long greyish hair. The basal

half of the median segment is rounded, the apical half obliquely truncated ; coarsely

reticulated, the reticulations especially large at the base, where there is a narrow patch

of depressed pubescence, the rest of the segment being almost glabrous; the median

area elongated, slightly contracted in the middle, the apex triangular. The fore part

of the propleure is strongly punctured; the part behind this striolated, the apex

aciculated, these portions being depressed. ‘The mesopleure are moderately strongly

punctured and covered with silvery pubescence. The apex of the metapleure is

reticulated; the other parts broadly depressed and aciculated; an oblique row of

punctures in the centre. The first segment of the abdomen only black at the extreme

base; strongly punctured, especially towards the apex, and sparsely covered with long

silvery hair; the teeth stout, bluntly pointed. The second segment moderately covered

with shallow punctures, and bearing short white hair; the apex fringed with fiery-red

hair. The other segments are closely punctured. The pygidium punctured, and

covered with ferruginous, and in the centre with longer pale, hair; in the middle at

the apex is a shining space, which is triangular and keeled at the end, and from the

point of this triangle a stouter keel runs down to the bottom; the sides are indistinctly

keeled towards the apex. ‘The first ventral segment is narrowed at the base; then it

becomes dilated, the apex of this dilated part having two elongated fovee, extending

from the middle to the sides; the keel is gradually depressed from the base to the

apex, but the depression is better marked on the basal portion ; the sides are depressed

and bear some large punctures; the apex obliquely truncated. The second ventral

segment has scattered punctures and a row of punctures across the apex; the other

segments are punctured at the apex and fringed with pale hair. The hypopygium has

two pairs of somewhat triangular teeth, the apical pair being the longer of the two.

The wings have the apical half darker than the basal half. The radial cellule is wide ;

the apical abscissa of the radius is curved, the apex almost straight, and it is about one

half longer than the basal abscissa. The first cubital cellule is not much longer than

the second. ‘The first transverse cubital nervure is curved, oblique, the second roundly

curved, the third acutely angled above the middle; the recurrent nervures are received

about the same relative distance beyond the middle of the cellule. At the top the

third cubital cellule is a little less in length than the distance bounded by the second

transverse cubital and the second recurrent nervures. ‘The transverse median nervure.

is received in front of the basal. :

This insect is more nearly allied to WZ. vanduara than to any. other Mutilla known to

me; but in that species the apex of the central part of the propleure is not depressed

nor striolate, the median segment has more hair, the head and body are generally more

pilose, and the hypopygium has (instead of two pairs of flattened teeth) a continuous _

keel, raised at the base, between which and near the apex are two flat curved teeth.

294 HYMENOPTERA.

\ 38, Mutilla mazatlane.

Long. 11 millim. ¢.

Hab. Mexico, Presidio de Mazatlan (Forrer).

Head, at least on the vertex, coarsely punctured, densely covered with a dull silvery

pubescence ; the clypeus shining, glabrous, the apex rounded and margined. The eyes

large ; the head not much developed behind them, and roundly narrowed; the man-

dibles dull piceous before the apex. The scape of the antenne is of equal width

throughout, grooved on the inner side above, sparsely covered with silvery hair; the

flagellum stout, covered with a dull pile, the basal joints closely united, the third and

fourth joints equal in length. The pronotum with large, round punctures, covered

with a dense silvery pubescence; the apex broadly rounded. The mesonotum shining ;

the punctures close together and mostly elongate; the hair silvery, thick along the

sides. The scutellum only very moderately convex, punctured like the mesonotum,

and covered with long pale hair. The median segment with a gradually rounded slope

to the apex, reticulated; the base with a belt of depressed silvery pubescence, the

other parts covered with long pale hair; the median area elongate, slightly and gradu-

ally narrowed to the apex, which is rounded. The tegule are large, broad, developed

behind; the base with a few pale hairs; the apical half piceous. The propleure have

a somewhat triangular, large, slightly excavated, shagreened area behind; the meso-

pleure are punctured rather strongly, except at the base and apex; the metapleure

are reticulated, the base only slightly compared to the apex, and there is an impunctate

curved belt near the base. The basal segment of the abdomen shining, impressed

with widely separated punctures, and covered with long white hair; the teeth black

and stout. ‘The second segment punctured, except in the middle; the other segments

closely punctured all over, and fringed with ferruginous hair, and covered also with

long white hair, this being also the case with the second segment. The pygidium is

closely punctured, except a smooth, impunctate, glabrous, raised space, which extends

from the basal fourth to the apex, and gradually becomes broader behind, its own apex

being sharply oblique; the sides are at the apical two thirds keeled; the apex is

margined, transverse. ‘The first ventral segment is black in the middle; the raised

part at the base is triangular; the keel is straight, without any depression ; its apex

is oblique. The second ventral segment is almost impunctate; at the apex there is a

transverse depressed line, with large punctures in it. The other ventral segments are

- punctured, except at the base, and all bear long white hairs. The hypopygium also is

covered with long white hair; and a little beyond the middle are two flattened oblique

teeth, rounded at the apex. ‘The wings are lighter coloured towards the base. ‘he

radial cellule extends very slightly beyond the apex of the third cubital and is wide;

the first abscissa of the radius is a little curved, and slightly shorter than the apical

abscissa, which is more distinctly curved ; the first cubital cellule is not much longer

MUTILLA. 295

than the second ; the first transverse cubital nervure is oblique and slightly curved,

the second elbowed bluntly in the middle, the third sharply angled in the middle;

the first recurrent nervure is received shortly beyond the middle, the second in the

apical third of the cellule; the third cubital cellule at the top is about as long as the

space limited by the third transverse cubital and the second recurrent nervures; the

transverse median nervure is almost interstitial. |

This species is perhaps nearest allied to WM. chroma, and, like it, has the raised area

on the pygidium smooth and glabrous. In MM. chroma, however, there is no stout keel

on the pygidium dividing the apex into two portions, the top, too, being keeled; while

the apex (the bottom flattened part) projects considerably and is incised in the middle

(which is not the case in M. sinaloa). In WM. chroma, again, the teeth on the hypo-

pygium are much longer, and might, indeed, be called keels; the tegule are densely

covered with silvery pubescence; and the two recurrent nervures are received in the

middle of the cellules.

/ ** Abdomen black. (Species 39.)

39. Mutilla nana.

Mutilla nana, Smith, Descr. of New Species of Hymen. p. 226'; Blake, Trans. Am. Ent. Soc.

xiii. p. 205”.

Hab. Mexico, Orizaba }.

This is a true Mutilla, for the eyes are described as ‘‘ ovate”; but the form of the

abdomen is not mentioned, so it is uncertain as to which division it belongs.

ii. Hore wings with two cubital cellules. (Species 40.)

/ 40. Mutilla terminata.

Mutilla terminata, Smith, Deser. of New Species of Hymen. p. 2251; Blake, Trans. Am. Ent. Soc.

xiii. p. 205.

Hab. Mexico, Oaxaca}.

The form of the eyes is stated, but not that of the abdomen.

B. The basal segment of the abdomen not gradually dilated to the apex, but

forming a distinct petiole. (Species 41-62.)

‘I. Females (the males known or not). (Species 41-51.)

The following two species have black bodies; the heads sharply narrowed behind

the eyes; the thorax elongated, narrow; the median segment with a rather steep

slope; and the mesonotum tuberculated.

296 , HYMENOPTERA.

J 41, Mutilla championi. (Tab. XIII. fig. 13, 2.)

Nigra; vertice fulvo-hirto ; abdomine argenteo-piloso, petiolo rugoso-punctato. 9.

Long. fere 10 millim. ;

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Black ; the vertex broadly, the pronotum in front densely, covered with thick silvery

pubescence ; two silvery ovate macule on the base of the second abdominal segment,

and a broad interrupted silvery fascia at its apex; the other segments marked with

silvery hair at the sides; the head, thorax, and abdomen covered with black hairs ;

the mesopleure in front and behind, and the median segment laterally, covered with a

short silvery pubescence. The scape of the antenne is punctured and densely covered

with silvery hairs; the basal joints of the flagellum bear shorter silvery hair and the

apical joints a silvery pubescence. The head is much wider than the thorax, coarsely

punctured; the base of the mandibles is ferruginous. The eyes are large, oval; the

head very abruptly narrowed behind them. Thorax narrow, elongated; a very slight

incision near the base of the mesonotum ; from the tubercles slightly narrowed towards

the apex; bearing large, irregular, deep, separated punctures, except at the base of

the mesopleure, which is smooth and glabrous; the tubercle on the mesonotum is

blunt, shining, and black. The basal segment of the abdomen is longer than broad,

bearing large, deep punctures; not much dilated towards the apex; the apex densely

coyered with silvery pubescence, the rest of it with some long, pale hairs. The second

abdominal segment is wider than the thorax, coarsely punctured ; the other segments

are finely punctured in the middle ; the apical segment is fiery-red. The second ventral

segment without a keel, marked with large, distinctly separated punctures, its base,

sides, middle, and apex with a dense silvery pubescence ; the other ventral segments

fringed with silvery hair. Legs black; the cox densely covered with silvery pubes-

cence; the femora, tibie, and tarsi sparsely clothed with long white hair; the calcaria

white; the tarsal spines ferruginous.

V 42, Mutilla teapw. (Tab. XIIL fig. 17, 2.)

Nigra; capite dense aureo-hirto ; thorace abdomineque aureo-maculatis, petiolo argenteo-piloso. 9.

Long. 8°5 millim.

Hab. Mexico, Teapa in Tabasco (H. H. Smith).

Black; the head from near the base of the antenne, the apex of the mesonotum,

two large macule on the base of the second segment, and the apex of the second and

following segments, covered with golden pubescence; the anal region, the pleure, and

the sides of the median segment with silvery or dull golden pubescence ; the head,

thorax, and abdomen with long black hair. Head wider than the thorax, rather

strongly punctured, subquadrate, retreating roundly behind the eyes, which are oval

and of moderate length ; the base of the mandibles ferruginous. The scape of the

MUTILLTA. 297

antenne punctured, covered with silvery hair; the flagellum brownish beneath, covered

with golden pubescence. Thorax narrow, elongate, distinctly narrowed from the

tubercles to the apex, coarsely punctured throughout; the tubercles bluntly conical,

ferruginous at the apex. The abdomen longer and broader than the thorax, narrowed

towards the apex. The first segment, if anything, wider than long, punctured; the

base depressed, incised, produced laterally into sharp teeth ; covered with a long silvery

pubescence and with some long silvery hair. The second segment closely and coarsely

punctured ; the other segments with separated punctures, except at the base and apex.

The pygidium smooth and shining; the apex ferruginous; the base densely covered

with golden pubescence, the other parts with long fulvous hair. The first ventral

segment produced at the base in the middle into a blunt tooth; the second segment

strongly punctured; the third transversely striated at the base, the apex punctured ;

the other segments also punctured; the second segment with some long black hairs,

the other segments fringed with golden pubescence. Legs black, sparsely covered

with white hair; the calcaria white; the hair on the tarsi pale fulvous, the tarsal

spines also pale fulvous.

Agrees in form with M. championi, but the head is covered entirely with golden

pubescence, and it is also not so sharply nor so obliquely narrowed behind ; the thorax

has distinct patches of golden pubescence, and the black hair is denser and longer ;

the petiole is covered with silvery pubescence and is not coarsely punctured as in

M. championi; the markings on the second segment are larger and golden; and “the

punctures on the pleure are much closer and smaller.

The next two species agree generally in structure with M. teape and M. championt,

but the head is not so sharply narrowed behind the eyes; the thorax is shorter, com-

pared to the head ; and the coloration of the body is dark ferruginous, not black.

_ ’ 43, Mutilla tolteca. (Tab. XIII. fig. 14, 2.)

Mutilla tolteca, Blake, Trans. Am. Ent. Soc. iii. p. 2467, and xiii. p. 197°.

Hab. Mexico (Sumichrast}?), Venta de Zopilote in Guerrero 2800 feet (H. H.

Smith).

An example (?) from Guerrero apparently belongs to Blake’s species, but it is

12 millim. long (as against 8°5 millim.); the thorax from the teeth is more abruptly

contracted than is shown in Blake’s figure; and the cheeks and “a patch behind each

eye” are not black. The second ventral segment is described as “closely punctured ”:

in our specimen the punctures are large and distinctly separated, while the longitudinal

keel only extends to the middle. The form of the spets on the base of the second

segment is also a little different in the Guerrero example. The tips of the antenne

are fuscous.

Blake, in his first paper?, refers MW. tolteca to his subgenus Spherophthalma ; in his

BIOL. CENTR.-AMER., Hymenopt., Vol. IL, February 1894. 2. QQ

298 HYMENOPTERA.

Second? to Mutilla proper. Further, notwithstanding that its basal abdominal seg-

ment, as shown by his figure, is distinctly petiolated and not widened towards the apex,

nor confluent with the second, he places it in our first section. Under these circum-

stances it may be as well to give a detailed description of the Guerrero specimen.

The head transverse in front and behind, largely developed behind the eyes and not

narrowed there ; covered all over with a dense pale golden pubescence and long pale

golden hair, which hides the sculpture; the apex of the clypeus deeply and roundly

incised, the angles almost tooth-like; the mandibles ferruginous, the apex broadly

black. The antenne ferruginous, the apical joints fuscous and covered with a dense

pale microscopic pile; the scape punctured, sparsely haired; the third and fourth

joints subequal. The thorax much narrower than the head, elongate, narrowed behind,

dull ferruginous, the sides of the median segment blackish, the pronotum infuscated

laterally; punctured, but not very strongly; above covered with long black hairs; in

front of the tooth on the mesonotum isa patch of golden pubescence; the pleure

covered with silvery pubescence, especially thick at the base and apex; the tooth pale

yellow, flattened laterally, and with the apex rounded; the median segment elongate,

and with a gradually rounded slope to the apex. Abdomen dull ferruginous; the

first segment not dilated towards the apex, broader than long, the base depressed, the

apex broadly covered with silvery pubescence; the second segment coarsely alutaceous

above, the sides with large punctures ; the base of the third segment has large, widely

separated punctures, this being the case also with the fourth and fifth segments, but

the punctured belt is narrower. On the base of the second segment are two somewhat

oval golden macule ; there is a similarly coloured band along the sides and apex of

the same segment, but not extending all thé way across; there are golden spots on the

sides of the third and fourth segments, those on the latter uniting obliquely at the

apex; the fifth segment has the golden marks united at the top and bottom in the

middle, but with a small glabrous mark in the centre. The pygidium is punctured,

and covered with golden pubescence in the centre; the sides bear long black hair.

The basal ventral segment has a somewhat oval keel at the base; the second segment

is strongly punctured and has a band of silvery hair at the apex; the third segment is

pilose at the base, the middle finely transversely striated, the apex with a punctured

belt, narrowed in the middle. The legs reddish, covered with white hair; the hind

tarsi with the pubescence fulvous, that on the basal joint being very dense ; the calcaria

white, about one third of the length of the metatarsus,

44, Mutilla sinaloa.

Mutilla cinaloa, Blake, Trans. Am. Ent. Soc. iil. p. 203", and xiii. p. 231 ’.

Hab. Mexico (Sumichrast }*).

This species is doubtless a close ally of the preceding ; but it differs in the thorax

MUTILLA. 299

not having the silvery patches, the second abdominal segment without the maculae, and

the following segments clothed with deep golden pubescence.

The following six species have the form and coloration of UY. tolteca, but they are

smaller (from 3-7 millim.); the body is dull ferruginous; the antenne and legs are

reddish; the thorax and abdomen sometimes have black markings; the head with

golden or brassy pubescence; and the abdomen at the apex mostly fiery-red or golden.

The annexed table will aid in their identification :—

1 (2). The apex of the median segment in the middle armed with a broad projec-

tion, which ends inatooth ... . soe ew we wee) bugabensis.

2 (1). The apex of the median segment without a tooth or projection.

3 (8). The second abdominal segment more or less black, and without white

maculee.

4 (5). The black mark on the second segment large, triangular in shape; the

thorax without black . . 2. 2. 1. 1. 1. 1 ee ew ew ee triangularis.

5 (4). The black mark on the second segment not triangular; the thorax marked

with black down the sides.

6 (7). The apical segments of the abdomen densely covered with golden pubescence ;

the third antennal joint distinctly longer than the fourth . . . . pantaleone.

7 (6). The apical segments of the abdomen without golden pubescence; the third

antennal joint not longer than the fourth. . . . . . approximata.

8 (3). The second abdominal segment without black, and marked with two shite

macule.

9 (10). The middle of the second abdominal segment, and third entirely, punctured

and densely haired . . . . - . . . chiriquensis.

10 (9). The middle of the second abdominal segment, and the ‘third entirely, not

microscopically punctured, glabrous, shining. . . . . . - . « belus.

y 45. Mutilla bugabensis. (Tab. XIII. fig. 23, 2.)

Long. fere 7 millim. 9.

Hab. Panama, Bugaba (Champion).

Ferruginous; the head golden; a mark on either side of the mesonotum, a bifurcated

large mark on the median segment, and some marks down the sides of the abdomen,

black; the apex of the first abdominal segment, two lines down the base of the second

segment, and two large marks on the apex of the latter, silvery-white; the other

segments golden. Head with long fuscous hair, wider than the thorax, not much

narrowed behind the eyes, which are large; the mandibles blackish at the tips. The

scape of the antenne covered with white hairs; the flagellum with a white microscopic

pile. The thorax about twice the length of the head, straight to the median segment,

where it becomes narrowed, coarsely punctured, sparsely covered with long fuscous hair;

the base of the mesonotum with silvery pubescence, there being also a slightly golden

2 QQ 2

300 HYMENOPTERA.

pubescence down the sides; the sides of the median segment with a golden pubescence,

as well as the pleura. The median segment has an abrupt rounded slope; at the top

is a projecting plate, with.a tooth in its centre, and at the sides a blunt pale tooth.

The pleure are entirely punctured. The abdomen is a little longer than the head and

thorax united, bluntly narrowed towards the apex; the segments fringed with silvery

pubescence; the first segment broader than long, depressed and toothed at the base,

not dilated towards the apex, punctured, and bearing long white hair, and a silvery

pubescence at the sides and apex; the second segment punctured at the sides; the

pygidium golden, and covered with long pale fulvous hairs; the other abdominal

segments with long black hairs. The tibiz and tarsi covered with white hair; the

tibial spines slender. |

~ 46, Mutilla triangularis. (Tab. XIII. fig. 27, ¢.)

Long. 4°5-7 millim, .?. .

Hab, Panama, Bugaba (Champion).

Dark ferruginous; the vertex, the sides of the mesonotum, and of the median segment

broadly, and a large triangular mark on the second abdominal segment, black; the

other abdominal segments covered with golden pubescence; the antenne ferruginous,

the apical joints black; the legs bright reddish-testaceous. The head closely punc-

tured, covered with a golden-fulvous pubescence and with golden hair; the occiput

and the vertex sometimes blackish; the vertex with a smooth keel running down it.

The eyes large, the head obliquely narrowed behind them. The scape of the antenne

covered with fulvous hair. The thorax narrower than the head, more than twice its

length, not contracted in the middle; the apex roundly narrowed behind the tubercle,

which is stout, blunt, and slightly curved ; moderately strongly punctured all over, the

punctures shallow and distinctly separated. The basal segment of the abdomen short,

broader than long, not dilated towards the apex, smooth, and bearing some long white

hairs; the second segment punctured like the thorax, but, if anything, more strongly ;

the hair on the other segments dense, hiding the sculpture entirely ; the pygidium with

the golden hair longer. The legs with a sparse covering of white hair; the tibial

spines slight; the calcaria white; the metatarsal hair-fringe fulvous. The hair on the

head and thorax is long and sparse, and pale fulvous; on-the abdomen it is thicker

and shorter.

The head may be entirely golden, or with more or less black on the top; the sides

- of the second abdominal segment are sometimes infuscated.

+ 47, Mutilla pantaleone. (Tab. XIIL fig. 25, 9.)

Long. fere 7 millim. ¢@,

Hab. Guatuma.a, Pantaleon 1700 feet (Champion).

MUTILLA. 301

Very nearly allied to M. triangularis, but with the head more rounded (not so

straightly oblique behind the eyes); the thorax shorter compared to the head, and

more distinctly roundly narrowed in front; and the second abdominal segment without

the triangular black mark. Head closely punctured, of a brassy-golden colour; the

hair long, sparse, and fuscous; the antennal plates ferruginous; the mandibles reddish-

black at the apex. Eyes moderately large, more rounded than in VV. triangularis. The

basal half of the antenne ferruginous, the apical half black. Thorax rather strongly

and closely punctured, sparsely covered with long dark fuscous hair; the sides of the

mesonotum broadly, and the greater part of the median. segment, black; the sides of

the thorax rounded and narrowed at the base and apex; the median segment with a

gradually rounded slope; the tubercle blunt, pale yellow. -Abdomen with the first

segment broader than long, finely punctured, covered with white hair, not dilated

towards the apex, the base depressed; the second segment coarsely punctured, sparsely

covered with long fuscous hair, reddish, surrounded with black, the black again being

margined (except at the base) with silvery-white, except at the middle, where the

white is interrupted ; the other segments densely covered with golden hair. The legs

reddish, sparsely covered with white hairs; the tibial spines long and slender; the

metatarsal fringe pale fulvous.

There is a keel on the vertex and front, but it is blunter and not so clearly marked

as in M. triangularis. In the type of coloration UM. pantaleone is not unlike

M. bugabensis; but that species may be at once known from it by the plate on the

median segment.

v 48. Mutilla chiriquensis. (Tab. XIII. fig. 28, 2.)

Long. 6°5 millim. @.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

Very nearly allied to M. bugabensis, but easily known from it by the absence of the

toothed plate from the top of the median segment.

Ferruginous, the head golden; the mesonotum bordered with fuscous; a bifurcated

black irregular mark on the median segment; the second abdominal segment black,

brownish at the apex, the base with two elongated silvery broad marks, the apex

silvery-white, with a small square black mark in the centre; the other segments lined

with golden pubescence. ‘The head punctured, but not strongly, much wider than the

thorax, sharply obliquely narrowed behind the eyes, which are large and reach to the

top; densely covered with long golden hair. The antenne thick, the scape with

fulvous hair, the flagellum glabrous. The thorax about twice the length of the head ;

the sides straight and not narrowed towards the apex; uniformly punctured all over

(including the mesopleure); the hair sparse and fuscous; the median segment with a

gradually rounded slope to the apex. The first abdominal segment not dilated towards

the apex, longer than broad, depressed and toothed at the base, strongly punctured,

302 HYMENOPTERA.

covered with white hair; the second segment punctured, but not strongly, covered with

fuscous hair; the hair on the other segments golden. ‘The ventral segments fringed

with silvery hair. Legs slender, covered with white hair; the spines weak; the

calcaria white; the fringe on the metatarsus white.

49, Mutilla belus.

Long. 5 millim. 2.

Hab. Panama, David in Chiriqui (Champion).

Head apparently punctured, but the punctuation hidden by a dense golden pubes-

cence, intermixed with long fuscous hairs. Eyes large, not projecting much, reaching

nearly to the top of the head, which is well developed behind them and narrow. The

scape of the antenne with a distinct curve, sparsely covered with silvery hair; the

flagellum with an obscure pile, the third and fourth joints subequal. Thorax elongate,

the sides straight, slightly narrowed towards the apex. The median segment with a

gradually rounded slope; a bluntly conical yellowish tooth near its base; closely and

somewhat strongly punctured all over, and bearing sparse, long, fuscous hairs. The

prothorax above and laterally covered with a golden, the breast and metapleure with a

silvery, pubescence. The abdomen longer than the head and thorax united, as broad

as the head, rather strongly punctured, and bearing long blackish hair. The first

segment broader than long, not dilated towards the apex, depressed at the base, the

sides toothed; the base bearing a few longish hairs, the rest of the segment densely

covered with silvery pubescence. The second segment has two oblong marks of yellow-

golden hair before the middle, the sides have a silvery pubescence, and on the apex is

a belt of white pubescence, broadly interrupted in the middle. The third segment is

finely punctured, and only bears some long black hairs, except in the middle, where

there is a tuft of golden hair. The other segments are densely covered with long

golden hair at the apex, the base of each being punctured. The pygidium is smooth,

fringed round the edge with long white hair.

A small ( 2 ) variety (?} (4 millim. in length), from Mirandilla, Guatemala (Champion),

has the sides of the mesonotum broadly, and the greater part of the median segment,

black ; the hair on the head not so brightly golden in tint; the second abdominal

segment blackish, but with the yellow marks and lines as in the type; the third and

following segments densely covered with golden pubescence, the third segment with a

black mark in the centre; and the pygidium densely covered with golden hair.

A specimen (2) (4 millim. in length) from Bugaba, Chiriqui (Champion), has the

thorax coloured as in the preceding, except that the black extends quite close to the

apex of the median segment; the second segment wants the yellow spots and has a

golden pubescence, the apical white line being browner and uninterrupted; the other

segments are reddish, more or less suffused with fuscous, and they bear some long

MUTILLA. 303

fuscous hair, and at the apex a fringe of golden hair; and the pygidium is fringed with

long fulvous hair at the sides.

Another example (¢ ) from Bugaba has the thorax and abdomen without any black ;

the second abdominal segment without yellow macule; the third and following

segments less strongly pilose and more distinctly punctured; and the pygidium smooth

and shining, very sparsely pilose at the base, the apex also not being so strongly haired

as in the other varieties.

As I can find no structural differences between all these forms, I have no doubt that

they all belong to one species.

/ 50. Mutilla approximata.

Long. 5 millim. QQ.

Hab. Panama, Bugaba, 800 to 1500 feet (Champion).

Head much wider than the thorax, coarsely punctured, densely covered with golden

pubescence, and with some long blackish hairs; the mandibles yellowish at the apex ;

the eyes large, reaching almost to the top of the head, which is well developed behind

them and obliquely narrowed. The scape of the antenne with a whitish pubescence ;

the flagellum with a pale pile, blackish towards the apex, the third joint distinctly

shorter than the fourth. Thorax elongate, narrowed at the base and apex, the sides

straight ; coarsely punctured, above black, with a broad reddish band down the middle ;

the pleure blackish above. The median segment with a gradually rounded slope ; the

tooth at its base stout, conical, yellowish. ‘The first segment of the abdomen wider

than long, depressed at the base, the sides bluntly toothed ; with a few blackish hairs.

The second segment coarsely punctured, densely covered with short black hairs ; blackish

above, and with a large, round, red mark in the centre, the apex reddish, and with

sparse golden hair. The third, fourth, and fifth segments at the base are glabrous,

transversely striated; the apices strongly punctured, and with a golden pubescence and

some long blackish hairs. ‘The femora and tarsi are sparsely haired; the tarsi densely

covered with pale fulvous hair.

This species is allied to VM. belus, but may be known from it by the eyes reaching

to the top of the head (which is not the case with M. belus), the head, too, retreating

more sharply and more obliquely behind them, and without a curve; and by the third

joint of the antennz being shorter than the fourth.

M. pantaleone agrees with VM. approximata in general form and coloration, and in

the eyes reaching to the top of the head; but it has the third joint of the antenne not

shorter than the fourth; the head behind the eyes rounded (not straightly oblique) ;

and the third, fourth, and fifth segments not striated and punctured, and covered all

over with a dense golden pubescence.

304 HYMENOPTERA. -

The next species is perhaps best placed here; we have not received a specimen

of it:— |

{

\ 51. Mutilla yucatana. |

Mutilla yucatana, Blake, Trans. Am. Ent. Soe. iii. p. 2037, and xiii. p. 231°.

Hab. Mexico (Sumichrast 1).

This species has the head fuscous, the abdomen with the disc dark ferruginous and

the sides fuscous.

2. Males, of which the females are unknown. (Species 52-62.)

* The median segment laterally terminating in long stout spines; the apex of the

| scutellum spined at the side. (Species 52.)

52. Mutilla odontophora. (Tab. XIII. figg. 30,6; 31, ¢ organ.)

Long. 14 millim. 6.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Head very coarsely and strongly punctured, shining, the vertex with some fuscous hairs ;

a dense tuft of silvery-white hair over the base of the antenne; the clypeus bearing

long silvery hair; down from the antenne run two stout keels, which continue nearly

parallel to the middle and then become widely divergent ; the cheeks slightly incised

at the apex laterally ; the mandibles piceous before the apex. ‘The eyes are large and

reach quite close to the top of the head. The scape of the antenne punctured, grooved

on the inher side, sparsely pilose; the flagellum with a microscopic fuscous pubescence ;

the third joint distinctly longer than the fourth. The thorax not much wider in the

middle than the head, very coarsely and strongly punctured ; the punctures on the

mesonotum running into reticulations, some of them being very long and wide. The

pleuree very coarsely punctured. ‘The pronotum with the sides wide, slightly oblique,

at the base very slightly projecting. ‘The scutellum obliquely projecting, bearing some

large and deep punctures, and with a smooth channel down the centre; the apex

in the middle slightly projecting, impunctate and raised; the sides projecting into

stout, somewhat triangular teeth. The median segment with a gradually rounded

slope to the apex, densely covered with silvery pubescence; at the base in the middle

is a V-shaped area, from which runs a keel to the apex of the segment; the sides are

smooth, and deeply and widely grooved to a little beyond the middle above, projecting

into large stout teeth, which reach to the basal third of the petiole. The mesopleure

bear a sparse whitish pubescence, and project in the middle into a large, stout, some-

what triangular tooth. The petiole is longer than broad, the base depressed and

projecting into blunt teeth; densely covered with silvery-white pubescence. The

second and following segments are smooth and shining, very minutely punctured, the

MUTILLA. 305

punctures widely separated ; the apical three segments are keeled down the centre.

The pygidium is more strongly punctured than the rest of the abdomen, more particu-

larly towards the apex, and bears some long pale hairs. ‘The second ventral segment

is strongly punctured ; the other ventral segments with the punctures weaker and more

widely apart.

** The median segment and the scutellum not spined. (Species 53-62.)

J f The scutelium gibbous. (Species 53.)

53. Mutilla culta. (Tab. XIII. figg. 15, 3; 16, 3 organ.)

Long. 138-14 millim. ¢.

Hab. Mexico, Tabasco (H. H. Smith).

Head densely covered with griseous hair, more sparsely on the top; coarsely, rugosely

punctured, retreating behind the eyes, which are large. The scape of the antenne

covered with white hair; the flagellum with a dull pubescence; the third and fourth

joints subequal. Thorax coarsely, rugosely punctured, the punctures running into

reticulations; the posterior margin of the pronotum. shining, impunctate, its base

transverse, the sides projecting into conical protuberances. The scutellum depressed at

the base, stoutly gibbous. The median segment at the apex above projecting into a

triangular broad tooth; the sides above bituberculate at the base, below reticu-

lated. The tegule large, irregularly punctured, except at the apex, which projects

backwards considerably ; the mesonotum along the tegule depressed. The pro- and

mesopleuree and the scutellum have a blackish pubescence; the median segment,

except in the middle (down from the middle tooth), is densely covered with white

hair; the mesopleure are also densely covered with white hair. The first seg-

ment of the abdomen about twice longer than broad, not dilated towards the apex;

the base obliquely truncated, without hair; the remainder of the petiole densely

covered with white hair. The second abdominal segment shining, bearing all

over roundish, widely separated, shallow punctures; its apex with a wide dense band

of white pubescence. ‘The other segments are much less strongly and sparsely punc-

tured, except the pygidium, which bears long white hair. The second ventral segment

rather strongly punctured, and with a narrow band of white pubescence at the apex ;

the other ventral segments bear a few long white hairs. The femora sparsely, the

tibie and tarsi densely, covered with white hair; the calcaria white. The basal abscissa

of the radia] nervure is a little curved, and about twice the length of the apical, which

is straight and oblique. The first and second transverse cubital nervures are slightly

curved ; the third is faint and broken off about the middle, so that there are practically

only two cubital cellules. The first recurrent nervure is received beyond the middle of

the cellule; the transverse median nervure is not interstitial. The costal cellule is

BIOL. CENTR.-AMER., Hymenopt., Vol. II., Apri/ 1894. 2 RR

306 HYMENOPTERA.

lighter coloured than the others; and in the first and second cubital cellules runs a

white line, there being also two white lines in the third cellule.

Characteristic of this species are the tuberculate edges of the pronotum, the strongly

gibbose scutellum, the large tegule, and the tooth on the apex of the median segment. ,

++ The scutellum not gibbous; the median segment not tuberculate in the middle.

(Species 64-62.)

t The abdominal segments 3-6 clothed with golden pubescence.

(Species 54 and 55.)

1 (2). The median segment thickly covered all over with a dense silvery pubes-

cence, and with a stout tubercle in the middle; the wings extending beyond

the apex of the abdomen . . . . 1. 1 we we we ee ee ee pomone.

2(1). The median segment with silvery pubescence at the base only, and without

a distinct tubercle; the wings not extending to the apex of the abdomen . megera.

A 54, Mutilla pomona. (Tab. XIII. fig. 29, ¢.)

Long. 12 millim. 6.

Hab. Mexico, Dos Arroyos and Rio Papagaio, both in Guerrero (HL A. Smith),

Temax in North Yucatan (Gaumer).

Head and thorax densely covered with a longish griseous pubescence. The head a

little narrower than the thorax, the sculpture hidden by the pubescence; the mandibles

punctured, ferruginous before the apex. The eyes large, the head roundly narrowed

behind them. The pronotum apparently punctured, the punctuation hidden by the

dense pubescence ; the mesonotum with large, deep, irregular punctures, and with two

short furrows on either side, the inner one irregular. The scutellum broadly convex,

strongly punctured. The median segment with the upper half oblique, the lower half

semiperpendicular; the sides, looked at from above, bulging out obliquely and with a

bluntly conical tooth at the base above; strongly punctured and very densely pilose.

The mesopleure rather strongly punctured and densely pilose; the metapleure still

more strongly punctured, but only sparsely pilose. ‘The first segment of the abdomen

wider than long, not dilated towards the apex, depressed at the base, covered with long

griseous hair. The second segment shining, the base and sides with depressed pale

fulvous hairs; the apex broadly, and all the following segments densely, covered with

fulvous hair. The pygidium punctured at the base. The first ventral segment keeled

all down ; the second strongly punctured; the other segments punctured in the middle

and sparsely pilose. The hypopygium pale yellow and covered with long pale hairs.

The legs densely covered with pale hair; the calcaria white. The basal abscissa of the

radius is oblique, and is about one fourth longer than the apical abscissa, which is

curved ; the second cubital cellule at the top is about the length of the space bounded

by the first recurrent and the second transverse cubital nervures ; the third cellule at the

| MUTILLA. 307

top is nearly one fourth longer than it is at the bottom; the third transverse cubital

nervure bulges out into a sharp angle in the middle, from which runs a nervure half-

way across. The first recurrent nervure is received in the apical third, the second

beyond the apical fourth of the cellule.

J 55. Mutilla megera.

Long. 8 millim. 6.

Hab. Mexico, Hacienda de la Imagen in Guerrero 4000 feet (H. H. Smith).

The head coarsely rugosely punctured ; below the ocelli covered (but not very thickly)

with long white hairs. The eyes distinctly oval, with the incision wide ; the head not

much narrowed behind them. The scape of the antenne bearing white hair and punc-

tured; the flagellum covered with a fuscous pubescence; the third and fourth joints

subequal. The thorax very coarsely, rugosely punctured ; the base of the prothorax

transverse, the edges slightly projecting. The tegule are moderately large, do not

project behind, and are ridged at the sides: the mesonotum at their base is widely and

deeply depressed. The median segment short, irregularly and widely reticulated ; at

the base in the centre is a V-shaped depression; the apex is sharply oblique. The

pleure are coarsely, rugosely punctured. The entire thorax is covered (but not thickly)

with white hair, which is longer on the median segment than elsewhere. ‘The first

segment of the abdomen is wider than long, short, coarsely punctured ; the base

depressed, the sides projecting : covered sparsely with white hair. The second segment

is strongly punctured ; its apex, and also that of the following segments, fringed broadly

and densely with golden-fulvous hair. The pygidium rather strongly punctured, and

only bearing a few white hairs towards the apex. The tibize and tarsi densely covered

with white hair; the calcaria white. The basal and apical absciss of. the radial

nervure about equal in length; their base not much wider than the apex. The base

of the radial cellule is a little wider than the apex; the second cubital cellule at the

top is about the length of the space bounded by the first recurrent and the second

transverse cubital nervures; the first and second recurrent nervures are received in the

apical third of the cellules. The third cubital cellule is narrower at the bottom than

at the top.

tt The abdominal segments with silvery pubescence ; the pubescence on the second

segment forming a belt, that on the other segments sparse. (Species 56-62.)

The five species I have here described as new may be separated as follows :—

1 (8). The tegulee not keeled.

2 (3). The base of the pronotum rounded . . . - + ee ee eee bakes.

3 (2). The base of the pronotum transverse.

4 (5). The hypopygium white; the centre of the clypeus not raised, and

thickly covered withhair 2 6 6 6 6 ee ee eh hts astuta.

2 RR 2

308 HYMENOPTERA.

5 (4). The hypopygium black; the centre of the clypeus raised and grooved,

not thickly covered with hair.

6 (7). The raised part of the clypeus indistinct, broad, not widened towards

‘

the apex. . . ~ . . « hAerberti.

7 (6). The raised part of the clypeus distinctly raised, “wedge-shaped, widest

attheapex . . 2 1. 1. kk ee ee 7 + + « + Catriona.

8 (1). The tegule keeled . 2... .. 1... 1 ee. e idiasta.

~ 56. Mutilla sapiens.

Mutilla sapiens, Smith, Descr. of New Species of Hymen. p. 225 (¢) (1879)'.

Hab. Mexico, Orizaba}.

It is obvious that this species is nearly related to the next, VV. herberti, but the

description is not very complete; the tegulz are described as testaceous at their tips, —

and the wings hyaline, faintly clouded at their apical margin. It belongs to this

division, for Smith says that the basal segment of the abdomen forms a short petiole.

\J 57. Mutilla herberti. (Tab. XIII. figg. 32, ¢; 33, ¢ organ.)

Long. 10-11 millim. ¢.

Hab. Mexico, Omilteme 8000 feet, and Chilpancingo 4600 feet, both in Guerrero

(H. H. Smith). 7

The antenne have the scape densely covered with silvery hair, the flagellum with a

darker pubescence; the third joint a little longer than the fourth. ‘The head appears

to be punctured, but the punctuation is hidden by the dense silvery hair which covers

it; the apex of the clypeus is shining, bare. The thorax is wider than the head; the

pleure and the median segment densely covered with long silvery pubescence; the hair

on the pro- and mesonotum darker, sparser, and shorter. The pronotum is truncated

in front; the sides oblique, rather coarsely punctured. The mesonotum is coarsely

rugosely punctured, without furrows ; the scutellum coriaceous. The sculpture of the

upper part of the median segment hidden by the hair; the sides with large deep punc-

tures, almost forming reticulations. The posterior upperside of the mesopleure is

excavated, smooth, shining. The petiole is about twice longer than wide; the base

depressed, the apical three fourths densely covered with silvery hair. The second

abdominal segment is closely punctured (but not coarsely, like the mesonotum ), and is

fringed at the apex with silvery hair. The third and fourth segments are finely punc-

tured on their basal half, the apical half aciculated ; sparsely covered with long white

hairs; the apical segments closely punctured; the pygidium covered with long white

hair. The ventral surface is closely and rather strongly punctured. The wings are

fusco-hyaline throughout, with the nervures deep black. There are three cubital

cellules: the first wider at the top than at the bottom; the second irregularly penta-

MUTILLA. 309

gonal, the top of the length of the lower part bounded by the first recurrent and the

second transverse cubital nervures; the third large, irregular, the bottom part as long

as the upper, the apex dilated in the middle. The first transverse cubital nervure

straight, oblique; the bottom part of the third sinuate; the upper nervure does not

reach to the apex of the wings, but the lower one does. The radial cellule is wider at

the base than at the apex; the first abscissa straight, oblique, the apical abscissa curved.

The transverse median nervure is interstitial. The tegule are moderately large, shining

at the apex, not produced behind, deep black, without a ridge; in front of them is

a wide, deep depression. ‘The femora are sparsely, the tibie and tarsi more thickly,

covered with silvery hairs; the calcaria are white.

J 58. Mutilla catriona.

Long. 9 millim. 6.

Hab. Mexico, Omilteme and Xautipa, both in Guerrero (H. H. Smith).

Head narrower than the thorax, covered all over with a dense silvery pubescence, and

on the vertex with long silvery hair; the clypeus raised in the middle into a wedge-

_ shaped projection, widest at the apex, the centre channelled; the tips of the mandibles

ferruginous. Behind the eyes the head is well developed and roundly narrowed. ‘The

scape of the antenne sparsely covered with rather long pale hair, the flagellum with a

brownish pile; the third joint is, if anything, longer than the fourth. ‘he pronotum

coarsely punctured, covered with long white hair; the base transverse, the sides oblique

and straight. ‘The mesonotum and scutellum more coarsely punctured than the pro-

notum, covered with long white hair. The scutellum convex, rounded; the furrow at

its base wide and deep; the hair not longer than that on the mesonotum. The median

segment, except at the apex, densely covered with a white pubescence; the apex reti-

culated; the median area long and wide, tapering towards the apex. The middle of

the propleurz depressed and irregularly striolate, the top rugdse ; the. mesopleure

punctured and covered with white hair; the metapleure reticulated, except in the

middle, obliquely. The tegule are large, wide, not keeled ; obscurely punctured and

haired. The petiole is twice longer than wide; the base oblique, the other parts

covered with silvery pubescence. The second abdominal segment is strongly punctured,

with a wide apical band of silvery pubescence. The other segments finely punctured

at the apex, clothed, but not thickly, with white hair, and keeled down the centre, this

being also the case with the pygidium, which is more strongly punctured than the pre-

ceding segments ; the apex of the pygidium transverse. The first ventral segment is

produced into a stout tooth at the base; it is slightly curved down the centre, the apex

oblique. The second ventral segment is strongly punctured and sparsely covered with

long hair. The other ventral segments are finely punctured. at the apex ;. the hypo-

pygium is more strongly punctured and black. The legs are covered with white hair ;

310. HYMENOPTERA.

the calcaria are white ; the tarsal spines fulvous. The radial cellule is moderately wide,

and does not reach the apex of the third cubital cellule. The first abscissa of the

radius is longer than the apical; it is straight and oblique, the apical abscissa being

rounded. ‘The recurrent nervures are received in the apical third of the cellules. The

transverse median nervure is interstitial. | |

M. catriona is closely allied to M. herbert: ; the latter, however, has the middle of

the clypeus only indistinctly raised, the raised part also not becoming wider towards

the apex; the petiole shorter and not so sharply oblique at the base; the space beneath

the basal tooth wider and more deeply and widely hollowed ; and the pubescence on

the thorax less dense and long.

vA 59. Mutilla blakei.

Long. 9 millim. ¢.

Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith).

Agrees in coloration and clothing with W. herberti, but differs in its smaller size, and

also in the following particulars:—The pronotum is not transverse at the base, but

rounded; the petiole is a little longer, and not at all dilated towards the apex; the

third and fourth segments are not more punctured at the base than they are at the

apex ; the first cubital cellule at the top is hardly wider than it is at the bottom: the

third cubital cellule at the top is longer than the space bounded by the first recurrent

and the second transverse cubital nervures, wider at the top than at the bottom; the

lower part of the third transverse cubital nervure is not sinuate, but sharply and

distinctly geniculate in the middle; the second recurrent nervure is received shortly

before the middle (not close to the apical fourth, as in herberti); the first transverse

cubital nervure is slightly curved, this being also the case with the second ; and the

transverse median nervure is not interstitial, but received in front of the transverse

basal. Head densely covered with silvery pubescence, the apex of the clypeus broadly

rounded. The scape of the antenne sharply keeled on the lower side and covered with

long white hair; the flagellum at the base closely covered with short hair, the rest with

a microscopic pile; the third and fourth joints subequal; the apical joint flattened

laterally. ‘The thorax wider than the head; the sides of the pronotum oblique, the

base transverse, the apex rounded in the middle; coarsely punctured and covered with

white hair. The mesonotum reticulated and covered with long white hair. The

scutellum subconvex, coarsely coriaceous, and covered all over with long white hair.

The median segment reticulated, densely covered with silvery hair. The metapleure

reticulated at the base and apex. The first ventral segment at the base projects into a

large, blunt tooth; the sides have longitudinal keels. The four apical segments of the

abdomen are keeled down the middle and are covered with long white hair.

MUTILLA. 311

60. Mutilla astuta.

Long. 12 millim. ¢.

Hab. Paxama, Volcan de Chiriqui 4000 to 6000 feet (Champion).

Head densely covered with griseous-white hair, which hides the sculpture. yes

moderately large, reaching nearly to the top of the head; the head not much narrowed

behind them. The scape of the antenne densely covered with whitish hair; the

flagellum with a dull microscopic pile; the third and fourth joints subequal. The

thorax a little wider than the head, coarsely, rugosely punctured; the pro- and meso-

notum sparsely clothed with white hair; the pleure densely covered with silvery-white

hair; the median segment with very dense griseous hair. ‘The pronotum at the base

transverse; the sides bluntly, triangularly tuberculate. The scutellum is moderately

convex. The median segment with a gradually rounded slope to the apex, and with a

blunt short tubercle in the middle. The tegule large, punctured, not projecting behind.

The petiole is a little longer than wide, not dilated towards the apex, densely covered

with griseous hair, except at the base, which is oblique; above roundly convex and

bluntly tuberculate at the sides. The second abdominal segment is shining, punctured

all over, but not very strongly; its apex with a dense band of silvery hair, dilated in

the middle. The other segments are faintly punctured, indistinctly keeled down the

middle, and with long white hair. The pygidium is more coarsely punctured than the

preceding segment, and with the keel distinct. The second ventral segment is more

strongly punctured than the dorsal, and is covered with white hair; the other ventral

segments are almost impunctate, and sparsely covered with rather long white hair; the

hypopygium is whitish-yellow. The wings are violaceous. The first abscissa of the

radial nervure is slightly curved, and one half longer than the apical abscissa, which is

oblique. ‘The first and second transverse cubital nervures are oblique; the top of the

second cubital is of the length of the space bounded by the first recurrent and the

second transverse cubital nervures; the first recurrent nervure is received in the apical

third of the cellule, the second in the apical fourth; at the bottom the third cubital

cellule is narrower than it is at the top; the third transverse cubital nervure bulges

out in the middle. The femora are sparsely, the tibize and tarsi densely, covered with

white hair.

This species is closely related to IW. culta, but may be known from it by the densely

haired head, the much less convex scutellum, the much smaller tooth on the median

segment, on which there is no keel, the shorter petiole, the more strongly punctured

pygidium, and the white hypopygium, and also by the second recurrent nervure being

received much nearer the apex of the cellule.

Compared with WM. herberti, M. astuta has the hair on the mesonotum shorter and

sparser, the abdomen shorter and broader, the hypopygium white (not black), and the

petiole differently formed—in WM. astuta it rises sharply and obliquely at the base,

312 HYMENOPTERA.

whereas in MV. herberti it is flat at the extreme base, from which it then rises gradually

and roundly.

| / 61. Mutilla idiasta.

Long. 6 millim. 6.

Hab. Mexico, Tierra Colorada 2000 feet, and Chilpancingo 4600 feet, both in

Guerrero (H. H. Smith).

Head a little narrower than the thorax, well developed behind the eyes and obliquely

narrowed there, rugosely punctured; covered with a silvery pubescence, and on the

vertex with long pale hair; the clypeus projecting in the middle, and with a wide

furrow down the centre, the furrow continued to the extreme apex, the sides almost

forming teeth; the apical half of the mandibles ferruginous. The scape of the antenne

covered with white hair; the flagellum with a fuscous pubescence; the third joint

nearly one half longer than the fourth. The prothorax transverse at the base, the

apex rounded, the sides straight; coarsely punctured, covered above with silvery

pubescence. The mesonotum covered with large reticulations and sparsely clothed

with long glistening white hair. The scutellum also reticulated, but the reticulations

are smaller and coarser, running into punctures; it bears all over long pale fulvous

hair. The median segment above is covered with dense silvery pubescence, which

hides the sculpture; the base has a gentle slope; the apex is sharply oblique, shining

und glabrous, and has two not very distinct keels running down the centre. The

propleure shining, glabrous, a little depressed, and with a few oblique keels; the

mesopleuree punctured and densely covered with silvery hair, except at the apex ;

the metapleure strongly reticulated behind. ‘The tegule are large, the sides carinate ;

sparsely covered with white hair. The petiole is wider than long; at the base it is

oblique, projecting into short stout teeth, the top of the truncated part being margined ;

the other parts are coarsely punctured and covered with silvery hair. The second

abdominal segment is rather strongly punctured all over, and at the apex has a band

of white pubescence; the other segments are finely punctured and fringed with white

hair. The pygidium is closely punctured and covered with short white hair, and stoutly

keeled down the centre; the apex is transverse. The basal ventral segment has a

straight keel; the second segment is more coarsely punctured than the corresponding

dorsal segment, and it is fringed with white hair at the apex; the hypopygium is white.

The legs are covered with white hair; the apices of the femora ferruginous; the cal-

caria and spines white. The wings are fusco-hyaline. The radial cellule narrowish ;

the basal and apical abscisse of the radius straight, oblique, the basal abscissa larger

than the apical. The first cubital cellule shorter than the second; the third cubital

cellule not reaching the apex of the radial. The first transverse cubital nervure

oblique and straight; the second curves towards the first; the third is angled sharply

MUTILLA.—SPHAROPHTHALMA. 313

above the middle. The recurrent nervures are received in the apical third of the

cellules; the transverse median nervure is interstitial,

A very distinct little species.

~ 62. Mutilla gracilis. |

Mutilla gracilis, Smith, Cat. Hymen. Ins. iii. p. 42'; Blake, Trans, Am. Ent. Soe. iii. p. 231°, and

xili. p. 202°.

Hab. NortuH America, Texas ? ?,—Mextico 2 3,—Amazons, Paré!.

Smith! does not describe the form of the eyes, nor of the petiole of this species. It

is placed in this section by Blake °, who also, as noted above, records it from Texas and

Mexico; but he merely gives an abstract of Smith’s description of the insect. If it

really belongs to this section, it differs from I/. herberti and WM. blakei in having the

wings hyaline, with the apical margin clouded; the tegule produced behind and ridged

down the middle; the head covered only with a thin griseous pubescence.

| SPH ROPHTHALMA.

Spherophthalma, Blake, Trans. Am. Ent. Soe. iii. p. 232 (1871); xiii. p. 180 (1886).

As in Mutilla, this genus may be conveniently split up into two sections; one having

the basal segment of the abdomen gradually dilated to the apex and confluent with the

base of the second; the other having it much narrower than the second and not, or

hardly, dilated at the apex. The first section may be further subdivided by the form

of the head, of which, as will be seen, there are three well-marked types.

So far as we can judge from the collection at our disposal and from the small number

‘described, the males appear to be much rarer than in Mutilla. They are easily known

from the latter by the eyes being entire.

A. The basal segment of the abdomen gradually dilated to the apex, and

confluent with the second. (Species 1-66.)

i. The posterior angles of the head rounded, acutely produced beneath. (Species 1-8.)

| a. The cheeks with a large tooth on either side. (Species 1-7.)

v 1. Spherophthalma robinsoni.

Mutilla robinsonii, Blake, Trans. Am. Ent. Soc. iii. p. 250°.

Spherophthalma robinsonii, op. cit. xiii. p. 246°.

Hab. Mexico (Sumichrast '*).

This species appears to be closely related to the following, S. respublicana, but

differs from it in the “ cheeks below the eyes having two small bilobed tubercles, ferru-

ginous in front, just beneath which there is a stout tooth on each side projecting

behind, ferruginous at tip; below these are two others much larger, projecting beneath,”

BIOL. CENTR.-AMER., Hymenopt., Vol. II., November 1894. 288

314 HYMENOPTERA.

It agrees also with S. respublicana in the mandibles being toothed ——“ Mandibles stout,

with a tooth about one third of their length from the tips.” The pubescence on the

basal segment of the abdomen is golden, not silvery as in S. respublicana.

9. Spherophthalma respublicana. (Tab. XIV. figg. 1,9; la, head from

the side.)

Nigra, capite et thorace seneo-velutinis ; abdominis segmento 2° ferrugineo bimaculato. 92.

Long. 18 millim.

Hab. Muxtco, Cordova, Paso del Macho (Hoge).

Head much wider than the thorax, somewhat convex (rounded) in front, concave

behind, slightly narrowed from the eyes; the hinder angles viewed from above

rounded, behind bluntly keeled, the keel ending in a stout, blunt tooth; the cheeks

are prolonged into stout teeth, narrowed and curved at the apex, and nearly 2 millim.

in length. The head is black, the vertex covered with dense golden pubescence; the

hair on the front is black; the clypeus is rounded at the apex, obscure fulvous in

colour, and fringed with long fulvous hair; the outer orbits bear a sparse white

pubescence and they have shallow punctures; the front is rugosely punctured. At.

the base of the mandibles on the lower side there is a long tooth, rounded at the apex.

The scape of the antenne is long, narrow, curved at the apex, and covered with white

hair; the third joint is more than twice the length of the fourth and is shorter than

the second. .The thorax is broadly but shallowly narrowed; the base is rounded and

is a little wider than the apex; at the base are two short blunt tubercles; the apex

has a straight oblique slope. The posterior part of the propleure is punctured; in

the middle of the mesopleure at the top is a comparatively deep, smooth incision; the

extreme apex of the metapleure is stoutly striolated; the marginal teeth are minute.

The thorax is black, the mesonotum with a broad band of golden pubescence dilated

in the middle on either side. The basal abdominal segment is thickly covered with

white pubescence. On the second segment are two large roundish orange marks; its

sides and the apices of the other segments are broadly margined with pale fulvous

pubescence ; the pygidium is densely covered with a dense golden pubescence. The

basal ventral segment is bluntly keeled throughout; the punctuation on the second

segment is coarse ; the other ventral segments are finely punctured and sparsely clothed

with long white hair. ‘The hair on the coxe, femora, and tibiz is black, that on the

tarsi fulvous ; the tibial spines are long, stout, and black.

V3, Spherophthalma ravula, (Tab. XIV. fig. 5, 2.)

Nigra, capite et thorace aureo-velutinis ; abdominis segmento 2° late ferrugineo, basi maculis tribus nigris

notata. 2.

Long. 17-18 millim.

Hab. Mexico, Amula and Acapulco in Guerrero (H. H. Smith).

SPH ZEROPHTHALMA. 315

_ Head wider than the thorax, somewhat convex in front, broadly concave posteriorly,

very slightly dilated behind the eyes; the hinder edges bluntly acute; the lower tooth

straight, narrowed gradually to the apex, which is rounded; the part from a little

above the antenne covered with dense golden pubescence and hairs, which hide the

sculpture entirely; the outer orbits covered with pale fulvous hair; the clypeus

punctured, and fringed with long pale fulvous hair; the mandibles black, at the base

covered with long fulvous hair. The scape of the antenne covered with golden hair;

the third joint is more than double the length of the fourth, which is shorter than the

second. The thorax is a little longer than the head; the base is rounded; the sides

next the head are oblique, straight, and end in a blunt, triangular, short tooth, then

straight for a short distance, and then curved inwardly and narrowed, becoming a little

broader again towards the apex, but still narrower than the basal part; the apex has

an oblique slope. The apical part of the propleure is strongly punctured; there is a

striolated band near the middle of the mesopleure ; the metapleure are reticulated.

Above, the thorax is clothed with bright golden pubescence, except a large semicircular

black mark at the base, and the median segment, except the centre, which is black, the

golden part on the median segment becoming narrowed toa point at the bottom. The

median segment bears long white hair. The basal abdominal segment is covered with long

white hair, which is particularly thick at the sides ; the second segment is golden, except

at the base, where itis black, and from it projects in the centre a cup-shaped black mark,

the black being also continued down the sides to near the middle; the apex is broadly

black, the black projecting somewhat triangularly in the middle. The sides of the

second and the third to the fifth segments (the latter at the sides only) are covered

with pale fulvous hair. The pygidium is finely rugose and piceous in the centre; at

the base it is covered with thick golden hair; the sides have a few long pale fuscous

hairs. The apex of the basal ventral segment is broad in the middle and not keeled ;

the second segment is strongly punctured and covered all over somewhat thickly with

fulvous hair; the other segments are finely and closely punctured at the apex, and

finely transversely shagreened at the base, the apex bearing dull fulvous hair ; the last

segment is thickly covered with long fulvous hair. The legs are thickly covered with

white hair; the tibial and tarsal spines are ferruginous. The form of the central

black mark on the base of the abdomen varies—it may be square, rounded, or trans-

verse, or incised at the apex; the size of the black mark on the base of the thorax

varies also. There is likewise a slight variation in the form of the sides of the thorax,

and the colour of the hair on the head varies from very bright to pale golden.

V4. Spherophthalma jocularis. (Tab. XIV. fig. 3, 2.)

Lete ferruginea; abdomine nigro, segmento 2° late ferrugineo. ¢.

~ Long. 13-14 millim.

Hab. Mexico, Amula in Guerrero 6000 feet (H. H. Smith). |

2 98 2

316 | - -HYMENOPTERA.

Head wider than the thorax, almost transverse in front, behind rather deeply con-

cave, very slightly dilated from the eyes onwards; the posterior angles narrowly

rounded, the edges bluntly keeled and ending beneath in a long, stout, curved tooth ;

the oral region is black, and covered with long white hair; the hair on the rest of the

head is also white, but shorter; the mandibles are rufous at the base; the punctuation

is moderately strong. The scape of the antenne is sparsely covered with long pale

fuscous hair; the third joint is nearly three times longer than the fourth, which is of

the length of the first; the middle joints are brownish beneath. The thorax is ferru-

| ginous above; it bears a bright golden pubescence; the base is broadly rounded ; the

basal third is dilated, margined; the apex with an oblique slope and bearing long

white hair, the hinder region of the propleure margined, narrowed at the bottom, and

bearing large, widely separated punctures; the mesopleure shining, impunctate,

glabrous; the apex of the metapleure obliquely striolate. The basal abdominal

segment black, covered with long white hair; the second segment black at the base

and apex, the centre with bright golden pubescence, the base and apex with long black

hair, the sides with silvery pubescence ; the third to the fifth segments covered with

pale fulvous hair, except the centre of the fifth, which is clothed with black hair; the

pygidium is covered with black and golden hair. The apical half of the basal ventral

segment is keeled, the apex being oblique and piceous in colour; the second segment

is strongly punctured ; the other segments are finely and closely punctured, and covered

with long pale hair. The hair on the coxe, femora, and tibie is long and pale, that

on the tibie deep golden; the tibial spines are stout and black. |

Apart from the difference in coloration, the present species may be known from its

allies by the spine on the head being longer, sharper, and curved, while the thorax is

not incised in the middle.

V5, Spherophthalma cresus.

Muitilla cresus, Gerst. Archiv f. Natur. xl. 1, p. 57’.

Hab. Mexico, Jalapa }.

I presume this species belongs to this section.

“6. Spherophthalma huasteca.

Mutilla capitata, Smith, Cat. Hymen. Ins. iii. p. 59*; Blake, Trans, Am. Ent. Soe. iii. p. 251

(nec Lucas) *. .

Spherophihalma capitata, Blake, Trans. Am. Ent. Soe. xiii. p. 246°.

Hab. Mexico },

A new name is required for Smith’s species.

SPHEROPHTHALMA. 317

7. Spherophthalma quadridens.

Muiilla quadridens, Blake, Trans. Am. Ent. Soe. vii. p. 2477.

Spherophthalma quadridens, Blake, op. cit. xiii. p. 247 ”.

Hab. Panama (Strecker 1).

b. The cheeks not produced into teeth (Species 8.)

Va °

8. Spherophthalma gabbi.

Mutilla gabbii, Blake, Trans. Am. Ent. Soe. vii. p. 248°.

Spherophthalma gabbii, Blake, op. cit. xill. p. 247°.

Hab. Costa Rica (Gadd 1).

ii. The head carinate behind. (Species 9-31.)

a. The keel ending beneath in a spine or tubercle. (Species 9, 10.)

9. Spherophthalma lerma.

Mutilla lerma, Blake, Trans. Am. Ent. Soc. iii. p. 251°.

Spherophthalma lerma, Blake, op. cit. xiii. p. 248 *.

Hab. Mexico (Sumichrast '*).

This species differs from S. inimica in having the head ferruginous, with golden

pubescence on the vertex, and the second abdominal segment with two pale yellowish

spots.

A e

10. Spherophthalma blandina.

Mutilla blandina, Smith, Descr. of New Species of Hymen. p. 227 (1879)'.

Spherophthalma blandina, Blake, Trans. Am. Ent. Soc. xiii. p. 257.

Hab. Mexico, Orizaba 1.

I follow Blake in placing this species here, but Smith says nothing about the head

being keeled.

b. The keel beneath not ending in a spine or tubercle. (Species 11-31.)

The first seven species of this section may be distinguished as follows :-—

1 (10). The head acutely produced behind, at the top ending in a sharp: point.

2 (5). The abdomen with a cross-shaped mark.

8 (4). The thorax elongate, distinctly narrowed towards the apex, the latter

. stoutly keeled. 2. 2. 1 2 6 1 we ew ew ee we ww ww timicn.

4 (8). The thorax short, not distinctly narrowed towards the apex, laterally with-

out keels 2. 2. 2. 1. 1 1 ew ew ee ee ew ww ww ee Cet.

318 HYMENOPTERA.

5 (2). The abdomen with a broad band or mark.

6 (9). The head black ; the abdomen with a golden or silvery band on the second

segment.

7 (8). The thorax red, without teeth ; the legs black. . . 0... es |). Caltha.

8 (7). The thorax black, stoutly toothed; the legs ferruginous . . . . . euryclea.

9 (6). The head ferruginous ; the second abdominal segment for the greater part

golden, with a black square mark at the base. . . » oe ew ee animosa.

10 (1). The head not acutely produced behind, the edges rounded. .

11 (12). The third joint of the antennze twice the length of the fourth . . . . damia.

12 (11). The third joint of the antenne not much longer than the fourth . . . extinctor.

v 11. Spherophthalma inimica. (Tab. XIV. fig. 2, 2.).

Nigra, basi antennarum, thorace pedibusque ferrugineis; abdomine albo-lineato. @.

Long. fere 9 millim.

Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion).

The head wider than the thorax, quadrate, almost transverse in front, concave

behind; the hinder angles sharply keeled, ending at the bottom in a blunt tubercle

the keel above projecting obliquely a short distance on to the vertex; closely, but not

very strongly, punctured, and thickly covered with short silvery-fulvous pubescence.

The oral region and the mandibles ferruginous. The eyes project a little beyond the

back part of the head, this being nearly twice the length of the eyes. The antenne

with the scape, the second joint, and the base of the third joint broadly, ferruginous,

the rest black ; the scape bare, the third joint twice the length of the fourth. The

thorax is rounded at the base, contracted at the middle, the apical part narrower than

the basal; the sides at the base are oblique, rough ; before the middle-contraction are

two stout curved teeth, the basal being the larger and thicker of the two; on the side

of the median segment are five stout teeth. The upper part of the thorax is mode-

rately coarsely punctured, and bears a short, sparse, white pubescence ; the median

segment has a gradually rounded slope, and is more thickly clothed with hairs than the

mesonotum, the hairs, too, being longer. The pleure are entirely impunctate. The

basal segment of the abdomen is obscurely punctured, sparsely pilose, and black; the

second segment is black, with a straight line of white pubescence down the centre,

there being another white line across its apex; there is an obscure white line down the

centre of the third segment; the third and following segments are covered with an

obscure, dull rufous, depressed, velvety pubescence, which is seen best when the insect

is viewed laterally. The pygidium is distinctly punctured and sparsely covered with

white hair. The basal ventral segment is ferruginous, the apex bluntly keeled, the

keel more distinct and projecting at the top; the second segment has the punctures

moderately large; the apieal-segments are ferruginous; the hypopygium is punctured ;

the pubescence is sparse and whitish. The legs are ferruginous throughout; the hair

sparse ; the calcaria white ; the tibial spines are rather long, sharp, and blackish.

SPH ZROPHTHALMA. 319

V 12, Spherophthalma beata. (Tab. XIV. fig. 4, 2.)

Long. 6 millim, 9.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Head slightly wider than the thorax, black, thickly covered with a dull silvery

pubescence, and with some rather long fuscous hairs; behind deeply and roundly

concave ; the keel above terminating in a short tubercle. The thorax not twice the

‘length of the head, not much narrowed towards the apex, ferruginous, sparsely covered

with long fuscous hairs; the sides not narrowed, with a small round incision at the

middle only, which has a tubercle at its base; closely and rather strongly punctured ;

the median segment with a gradually rounded slope. The abdomen black, covered

with a short stiff pile, and with long black hairs; down the centre is a straight line of

white pubescence, and in the middle is a transverse line of similar pubescence; the

terminal segment is smooth. The ventral segments are covered with long white hairs ;

the basal segment is ferruginous. The legs are ferruginous and covered with white

hairs. The antenne are black, with the four basal joints ferruginous; the third joint

is nearly twice the length of the fourth.

S. beata agrees practically in coloration with S. inimica; but that species may be

readily known from it by the thorax being longer compared to the head, and much

more narrowed behind, with the base oblique (not rounded) and ending in two teeth,

and the sides of the median segments stoutly spined.

VY 43. Spherophthalma caltha. (Tab. XIV. fig. 6, 2.)

Long. 7-8 millim. 9. .

Hab. Panama, Volcan de Chiriqui (Champion).

Head a little wider than the thorax, black, rather thickly covered (especially on the

front) with long white hair; broadly, but not deeply, concave behind, bluntly rounded

in front; the sides ending in stout curved keels. The mandibles are ferruginous, The

antenne are rather long, entirely black; the third joint twice the length of the fourth.

The thorax is ferruginous, not much longer than the head, hardly narrowed towards

the apex; the base semi-oblique laterally; the middle slightly incurved, with a tubercle

in the centre; the median segment with a gradually rounded slope. The abdomen

black, velvety; in the centre of the second segment are two elongated, transverse,

yellowish-white macule; the pygidium shining, minutely punctured, densely covered

with a silvery-golden pubescence. The legs black, and covered with silvery

pubescence.

Compared with 8S. inimica and S. beata this species has the keels behind the head

much more developed ; and it further differs in having the head black.

320 HYMENOPTERA.

Va Sphzrophthalma euryclea, (Tab. XIV. fig. 7, 2.)

Long. 8 millim. 9, |

Hab. Mexico, Teapa in Tabasco (H. H. Smith),

‘Head wider than the thorax, transverse in front, concave behind, the sides straight,

the eyes projecting, the part behind them more than twice their length, the keel blunt;

black, punctured, bearing long black hair, and a patch of dense golden pubescence

extends from the eyes round the vertex. The mandibles are ferruginous, with a tuft

of golden pubescence at the base. The head immediately above the mandibles is dull

ferruginous. The scape of the antenne is thin and ferruginous; the basal joints of the

flagellum are brownish beneath ; the third joint is double the length of the fourth.

The thorax is not much longer than the head, and is distinctly narrowed behind and in

the middle ; the base is bluntly rounded; the apex has a gradually rounded slope.

The sides at the base are rough and oblique; following this are two stout, sharply-

pointed teeth, the basal one being the larger; on the sides of the median segment are

three large, sharply-pointed teeth, followed by a small tubercle. The propleure are

punctured above; the meso- and metapleuree smooth, shining. The thorax is black,

obscure brownish along the sides above ; coarsely punctured above, and bearing long

black hairs. The abdomen is a little wider than the thorax, and is as long as the

head and thorax united, black; the basal segment with a band of pale golden

pubescence at the apex, the rest of it being sparsely covered with long blackish hair ;

a golden line, broad at the base, becoming gradually narrowed towards the apex, runs

down the centre of the second segment to a broad transverse band of golden pubescence,

which does not reach the apex of the segment, but is joined to it by a short, broad,

golden line; there is a similar line on the centre of the third segment; the fourth and

fifth segments are entirely golden; the pygidium is shining, punctured at the base, and

covered with long fuscous hair. There are a few long hairs on the base of the second

segment and still more on its apex; the other segments are rather thickly covered with

long black hair. The keel on the basal ventral segment is rounded at the base, the

middle distinctly raised ; at the apex it is almost obsolete. The second ventral segment

has large, widely-separated punctures; the other segments are more closely and finely

punctured, and obscure ferruginous. The legs are dull ferruginous, and sparsely

covered with white hair; the calcaria are pale; the tibial spines are very long and

sharp; the metatarsus is densely clothed beneath with pale fulvous pubescence.

V 15. Spherophthalma animosa. (Tab. XIV. fig. 8, 2.)

Capite et thorace ferrugineis, vertice fusco, pedibus antennisque rufis; abdomine supra nigro, aureo-hirto,

subtus rufo. ,

Hab. Nicaraeva, Chontales (Janson).

SPH EROPHTHALMA. 321.

_ Head a little wider than the thorax, quadrate, convex in front, more deeply concave,

at the base; slightly dilated behind the eyes, where it is more than double their.

length; the keel behind not very acute, not extending on to the vertex ; ferruginous,

rather strongly punctured, covered with silvery and golden pubescence ; the centre of.

the vertex blackish. Over each antenna there is a transverse carina extending from the

base to the eyes, their inner edges forming a triangular tooth. The mandibles are

ferruginous, black at the apex. The antenne are ferruginous, infuscate towards the:

apex, the scape glabrous; the third joint about twice the length of the fourth. The:

thorax is ferruginous, quadrate, hardly narrowed in the centre; the sides rough, but.

not denticulate; the base slightly rounded, the apex with a sharp oblique slope;

coarsely punctured above, and sparsely covered with a short silvery pubescence; the

propleure obscurely striated ; the mesopleure excavated, shining, glabrous; the meta-

pleure with a microscopic white pubescence. The basal segment of the abdomen is

ferruginous, with a black or fuscous-black mark across the apex. ‘The second segment

is golden, with the apex black, the black dilated in the middle; at the base are two

oval black marks and in the centre a square one, incised in the middle. The other

segments covered with golden pubescence. ‘The ventral segments are ferruginous; the.

basal segment is depressed in front and behind, rising in the middle, the keel distinct ;

the punctuation on the second segment is obscure. The legs are reddish, covered

with white hair. | |

This species is allied to S. chiapa, Blake, but is, I think, distinct, the latter having

the basal segment of the abdomen black; the antenne with only the scape and the

second joint rufous; the black marks on the base of the second segment differently

shaped, the central one being rounded (not incised) at the apex, &c.

“16. Spherophthalma damia. (Tab. XIV. fig. 9, 2.)

Long. fere 12 millim. @. |

Hab. Mexico, Amula in 1 Guerrero 6000 feet (H. H. Smith).

Head ferruginous, shorter and a little wider than the thorax, rounded in front, almost

transverse behind, punctured, sparsely covered with long black hair; a patch of pale

golden pubescence on either side of the vertex touching the eyes, there being another

and larger patch behind them; the keel distinct, but not projecting much, and not.

sharply developed above. The apical third of the mandibles black, the middle deeply

excavated. ‘Che antenne are stout; the flagellum ferruginous, and covered with golden,

hair; the third joint is more than twice the length of the fourth. The thorax is

entirely ferruginons; above coarsely punctured, and bearing long black hair; the,

middle broadly contracted ; at the base of the contraction is a tubercle and a blunt

tooth; on the sides beyond it are seven blunt teeth. The median segment has a sharp

oblique slope, and it has the punctures much larger, rounder, and deeper than those on

BIOL. CENTR.-AMER,, Hymenopt., Vol. II., November 1894. 27T

322, . “HYMENOPTERA.

the mesonotum. The propleure are closely punctured; the metapleure are covered

with fulvous pubescence. The abdomen is longer than the head and thorax united,

and, in the middle, is wider than the thorax; ferruginous, a band near the apex of the

basal segment, the apex of the second segment, and nearly the whole of the other

segments, black; the basal segment has a band of golden pubescence at the apex; the

second segment has a triangular mark on the sides, and a larger oblique mark near the

apex, golden, the apex itself banded also with golden; the third and fourth segments

are golden in the centre; the fifth is entirely golden; the pygidium is densely covered

with golden hair. The basal segment bears pale hair, the others long black hair. Ihe

ventral segments are ferruginous, blackish at the apex, the apex bearing long pale

fuscous hair. The basal segment is punctured; the keel blunt, not raised at the base.

The legs are ferruginous, densely covered with pale hair; the knees blackish; the

tibial spines rather long, stout; the calcaria pale fulvous; the metatarsus densely

covered with golden pubescence.

V 17. Spherophthalma extinctor. (Tab. XIV. fig. 10, 2.)

Long. fere 8 millim. @.

Hab. Mexico, Teapa in Tabasco (H. H. Smith).

Head much wider than the thorax, slightly rounded in front, concave behind ; the

sides broadly rounded, margined ; the part behind the eyes a little longer than their

length ; the front with a distinct channel down the centre; ferruginous, punctured,

sparsely covered with golden hair; the tips of the mandibles black. The antenne pale

ferruginous, thick; the scape stout, curved, almost bare; the third joint slightly longer

than the fourth. The thorax ferruginous, except a black oblique stripe on the meta-

pleure ; above sparsely covered with long fuscous hair, strongly punctured, the punc-

tures at the apex running into reticulations ; considerably narrowed towards the apex,

the base rounded, the middle roundly incised ; the tubercle in the centre of the incision

large, shining, pale yellow; in front of it are two large acutely-pointed teeth, followed

by a small tubercle; behind are five short teeth. ‘The abdomen as long as the head and

thorax united, the apex acutely pointed; the basal segment ferruginous, the apex

fringed broadly with pale golden hair; the second segment broadly black in the

middle, dark ferruginous at the sides, the apex with a broad band of pale golden

pubescence, dilated in the middle ; the other segments ferruginous, fringed with long

golden hair. ‘The basal ventral segment has the keel distinct, dilated in the middle ;

the second segment is dull ferruginous, punctured. The front legs are entirely ferru-

ginous; the four posterior legs have the knees, tibiee, and base of the tarsi black.

(ou)

SPHFZROPHTHALMA.

Lo e e

18. Sphzrophthalma bisignata.

Mutilla bisignata, Blake, Trans. Am, Ent. Soc. iii. p. 252°.

Spherophthalma bisignata, Blake, op, cit. xiii. p. 249°.

Hab. Mexico, Orizaba (Sumichrast 12).

‘19. Spherophthalma gothica.

Mutilla gothica, Blake, Trans. Am. Ent. Soc. ii. p. 252°.

Spherophthalma gothica, Blake, op. cit. xiii. p. 250°.

Hab. Mexico (Sumichrast 1).

90. Spherophthalma izucar.

Mutilla izucar, Blake, Trans. Am. Ent, Soc. ui. p. 253°.

Spherophthalma izucar, Blake, op. cit. xiii. p. 251.

Hab. Mexico (Sumichrast 12).

V 21. Spherophthalma chiapa.

Mutilla chiapa, Blake, Trans. Am. Ent. Soc. iti. p. 2537.

Spherophthalma chiapa, Blake, op. cit. xiii. p. 251°.

Hab. Mexico (Sumichrast 1).

V 22. Spherophthalma cruciata. |

Mutilla cruciata, Smith, Cat. Hymen. Ins. iii. p. 42*; Blake, Trans. Am. Ent. Soc. iii. p. 253’.

Spherophthalma cruciata, Blake, op. cit. xiii. p. 251°.

Hab. Mexico 2?,—Amazons, Para}.

This species agrees with S. deata in having a white cross on the abdomen; but,

among other differences, it may be known by the head being ferrugingus. Smith !

describes the cross on the abdomen as silvery, but Blake? says that in the Mexican

examples it is pale golden. It is probable that the Mexican and Brazilian insects do

not belong to the same species.

/ 23. Spherophthalma petricola.

Spherophthalma petricola, Blake, Trans. Am. Ent. Soc. xiii. p. 252’.

Hab. Mexico (Sumichrast+).

V 24. Spherophthalma auripes.

Mutilla auvipes, Blake, Trans. Am. Ent. Soe. iii. p. 254°.

Spherophthalma auripes, Blake, op. cit. xii. p. 252°.

Hab. Mexico (Sumichrast } 2),

27T 2

B24 _ ‘HYMENOPTERA.

J 25. Spherophthalma minutissima.

Spherophthalma minutissima, Blake, Trans. Am. Ent. Soc. xiii. p. 258°.

Hab. Mexico (Sumichrast ').

v 26. Spherophthalma psammadroma. |

Mutilla psammadroma, Blake, Trans. Am. Ent. Soe. iii. p. 254".

Spherophthalma psammadroma, Blake, op. cit. xiii. p. 253 *.

Hab. Mexico (Sumichrast } 2).

N 27. Spherophthalma ferruginea.

Mutilla ferruginea, Smith, Descr. of New Species of Hymen. p. 226 (1879) '.

Spherophthalma ferruginea, Blake, Trans. Am. Ent. Soc. xiii. p. 249°.

Hab. Mexico, Orizaba ! ?.

S. ferruginea probably belongs to this section, for the head is described as * wider

than the thorax, subquadrate, the hinder angles acute, the posterior margin nearly

_ straight.” It is entirely ferruginous.. The insect, however, may belong to Division B,

as the first segment of the abdomen is described as “ small.”

The next four species have the keel behind the head not very distinct. They agree

closely in coloration, having the head and thorax entirely black (or with the pleure

more or less testaceous), and coarsely clothed with silvery, or more often with golden,

pubescence ; the abdomen black, with two large, or two large and two small, orange

spots, the hinder segments fringed with silvery hair; the head broader than long, not

bulging out much behind the eyes; the thorax narrowed behind, contracted in the —

middle.

The following synopsis will aid in their determination :— .

1 (2). The pubescence on the head and thorax silvery, the abdomen with only

two orange spots

2 (1). The pubescence on the head and thorax bright golden ; “the abdomen with

four orange spots.

4 (3). The pleurz more or less testaceous.

5 (6). The pleure entirely testaceous; the thorax above covered entirely with .

golden pubescence ; a stout tooth before the middle of the thorax . . Jycimnia.

6 (5). The propleurz only testaceous ; the thorax at the sides only covered with

golden pubescence; no stout tooth before the middle of the thorax ;

the head distinctly bulging out behind the eyes, behind concave. . . phedyma.

amphissa.

SPHAROPHTHALMA. 320

28. Spherophthalma amphissa. (Tab. XIV. fig. 11, 2.)

Long. 9-12 millim.: 9,

| Hab. Mexico, Temax in North Yucatan (Gaumer).

Head very slightly wider than the thorax, coarsely punctured, from the base of the

antenne thickly covered with golden pubescence; the apex of the clypeus rounded ;

the mandibles broadly ferruginous in the middle; the antennal tubercles ferruginous

on the outside. Behind the eyes the head projects very little, and is there about one

and a half times their length ; it is slightly, but distinctly, concave posteriorly ; the

sides are rounded. The scape of the antenne is shining, and is covered with white

hair; the flagellum is covered with a dense pale down; the third joint is one half

longer than the fourth. The mesonotum is coarsely punctured; there is a broad patch

of golden pubescence on the sides, originating from a little behind the middle, and

continued down the sides of the median segment as a narrower band ; the base of the

mesonotum rounded ; the sides in the middle broadly incised, with a tooth at the base

and a blunt shining tubercle in the centre, there being also a sharp tooth before the

tooth at the base of the incision ; the middle of the incision acute. The apex of the

median segment is semiperpendicular. The pleure are impunctate, glabrous, and

shining ; a semioblique crenulated keel before the middle. ‘The abdomen closely

coriaceous, thickly covered with stout, stiff, depressed hair; the basal segment with

long white hair; on the second segment are two oval, shining, orange macule; the

third and following segments are densely covered with silvery pubescence; the pygi-

dium densely covered with long, stiff, golden hair. The basal ventral segment has a

straight keel, and there are two oblique keels on the sides, and also a few punctures on

them; the second segment is covered with large punctures, and with long pale fulvous

hair; the other ventral segments are finely punctured and fringed with white hair,

The legs covered with white hair, it being especially long on the tibie; the tibial

spines are short ; the apices of the tarsal joints with ferruginous hairs.

In two examples the macule on the second abdominal segment are shining and

without golden hair—in the others the golden pubescence is thick and hides the

sculpture—and the silvery patch on the sides of the mesonotum is wanting; but this

is perhaps due to abrasion. The hinder portion of the propleure may be punctured,

and it does not project. The hair on the apical ventral segments may be silvery

or golden.

| Vi 9. Spherophthalma orithyia.

Long. 13°5 millim. 9.

Hab. Mexico, Paso del Macho (Hége).

Head slightly, but distinctly, broader than the thorax and not much shorter than it ;

coarsely punctured, the punctures on the front running almost into reticulations; the

326 HYMENOPTERA.

vertex and the upper part of the front covered with golden pubescence; the apex of

the clypeus bluntly rounded, shagreened, fringed with golden hair; the mandibles

before the apex ferruginous. ‘The head rounded in front, transverse behind; the

hinder part hardly twice the length of the eyes; the middle is slightly dilated and is

about level with the eyes; behind it is slightly narrowed. ‘The scape of the antenne

very slightly pubescent; the flagellum more or less reddish-brown beneath ; the third

joint more than twice the length of the fourth. The thorax coarsely punctured ; the

centre with golden pubescence; the base bluntly rounded; the apex narrowed, trun-

cated, sharply obliquely sloped; at the sides the base projects into a small tooth,

beyond this is another small tooth, and from the middle is a shallow curve having a small

tooth at the base and the apex and another in the centre; the edge of the median

segment with three stout teeth. The base of the propleure obliquely cut off from the

apex, which is somewhat strongly punctured; the meso- and metapleure smooth,

impunctate, glabrous, save a crenulated ridge on the former. The basal segment of the

abdomen bears white hair and is coarsely punctured; at the base laterally are two

small, elongate, blood-red marks ; near the apex are two large, roundish, orange macule.

The third to the fifth segments are closely, not very finely punctured, and fringed

lightly with silvery hair; the pygidium at the apex is covered with stiff, long, fulvous

hair. The basal ventral segment can hardly be said to be keeled, it being so broad and

rounded ; the second segment bears large, elongated, deep punctures and a few long

white hairs; the other ventral segments are punctured all over, and fringed with long,

pale, fulvous hair; on the-sides of the third, fourth, and fifth segments is an oblique

furrow. ‘The tibiz and tarsi are thickly covered with white hair; the hair on the hind

legs inclines to fulvous. I can see no spines on the hinder tibiz: if they are not broken,

the calcaria are very short.

S. amphissa, to which the present species bears a certain resemblance, differs from

S. orithyia in having the head not dilated from the posterior margin of the eyes; the

pubescence on the head and mesonotum denser and white; the base of the propleure

not obliquely truncated, and cut off from the apical part; the second abdominal

segment with only the large macule; and the basal ventral segment distinctly

keeled. )

Some examples from North Yucatan (Gaumer) are probably varieties of S. orithyia.

They are smaller, being only 10 millim. in length; the incision in the centre of the

thorax is apparently deeper; the two marks on the second abdominal segment are

longer, being longer than broad (the converse being the case with the type); and the

apical segments of the abdomen are densely covered with bright golden hair, hiding the

sculpture entirely. ‘The clothing of the apical abdominal segments in the type is

apparently rubbed off.

nS)

SPH ZROPHTHALMA.

V's0, Spherophthalma lycimnia. (Tab, XIV. fig. 13, 2.)

Long. 12 millim. 9.

Hab. Mexico, Cordova (Hoge).

Head a little wider than the thorax, rounded in front, almost transverse behind, the

hinder angles moderately rounded; ferruginous, except the posterior orbits and the

upper part of the occiput behind; covered with long, pale, fuscous hair, the posterior

orbits with silvery pubescence; the mandibles ferruginous, with the tips black. The

scape of the antenne punctured, sparsely covered with white hair; the flagellum reddish

beneath; the third joint more than twice the length of the fourth. The thorax

coarsely punctured above ; the base almost transverse; from there it becomes slightly

dilated to near the middle, and is then rather abruptly and distinctly narrowed, the

pleura projecting into a stout blunt tooth; the sides rugged; the apex at the top is

rounded, the rest oblique. The propleure are blackish and finely aciculated, and

sharply separated from the mesopleure ; the base of the mesopleure is black, above

and at the sides before the tooth they are obscurely punctured and covered with a pale

pubescence, behind it they are shining, impunctate, and glabrous; the apex of the

metapleure is blackish, this being also the case with the apex of the median segment.

The pubescence on the thorax is white. The basal segment of the abdomen is covered

with long white hair. On the base of the second segment are two oval reddish macule ;

and at the apex are two transverse ones, which are double the size of the basal pair,

the apical pair being almost united in the middle. The third to the fifth segments are

closely punctured at the apex and covered with dull reddish hair. The pygidium is

pale ferruginous, except at the extreme apex, and thickly covered with long, stiff, pale,

golden pubescence. The basal ventral segment has a V-shaped raised space in the

centre in front; the keel is blunt, and ends before the apex of the segment, its base

being oblique. ‘The second segment has large, widely-separated, punctures, and is

sparsely covered with rather long white hairs. The other ventral segments are fringed

also with long white hair. The hypopygium is ferruginous. The femora and tibiz

are covered with white hair; the tibial spines are ferruginous, the calcaria pale fulvous ;

the tarsi thickly covered with ferruginous pubescence.

This species may be readily known from the others here described with four orange

spots on the abdomen by the projection on the middle of the thorax, and by the thorax

being entirely ferruginous,

J 31. Spherophthalma phedyma. (Tab. XIV. fig. 15, 2.)

Long. 12 millim. 9.

Hab. Guatemaua, El Tumbador 2500 feet (Champion).

Very similar in coloration to 8. mirandillensis, but with the head bulging out behind

and the eyes concave (instead of transverse) posteriorly.

828 _ HYMENOPTERA.

Head wider than the thorax, coarsely punctured; the vertex broadly golden to near

the end, and sparsely covered with blackish hair and with a golden pubescence; the

pubescence behind the eyes is pale golden, on the oral region it is long, fulvous, and

_ white; the mandibles are entirely black. The scape of the antenne bears golden

hair; the flagellum from the fourth joint is brownish beneath ; the third joint is more

than double the length of the fourth. The thorax is not much longer than the head,

coarsely punctured ; above ferruginous, with a black band narrowed in the centre

down its middle (the band being broadest at the base, where it is somewhat triangular) ;

the base transverse ; the apical balf narrower than the basal half; the apex has a steep

oblique slope. The base of the pleure is striclated transversely and is ferruginous

above; the centre shining, impunctate, and covered on the lower side with a white

pubescence; the apex has some shallow punctures and is stoutly toothed. The first

abdominal segment is covered with long white hair; close to the base of the second

segment are two small orange spots, and at the apex are two much larger ones; the

third to the fifth segments are fringed with pale golden hair; the pygidium at the

apex is testaceous and is covered with long bright golden hairs. The base of the first

ventral segment is convex, narrowed to a blunt ridge; the apical keel is indicated

only at the base and is oblique. The punctures on the second segment are shallow

and irregular in size. The ventral segments are fringed with pale fulvous hair; the

hypopygium is obscure testaceous and is punctured. The hair on the coxe, femora,

and tibiz is white, on the tarsi ferruginous; the tibial spines are very long. ,

iii. The posterior edges of the head rounded, not carinate. (Species 32-52.)

Blake, in his Monograph, only records two members of this section from North.

America. The following two species have the same type of coloration as the four

preceding—the head and thorax covered with bright golden pubescence, the legs

_ black, and the abdomen black with golden spots—and only differ from them in having

‘no trace of a keel on the edge of the head behind.

] (2). The golden pubescence on the mesonotum not divided ; the pleuree

entirely black. . 2. 2. 2. 1. 1. ee ee eee cordovensis.

2 (1). The golden pubescence on the mesonotum divided; the pleure .

broadly rufous at the base. . 2. . 2. eee ee) Omirandillensis.

J 32. Sphzrophthalma cordovensis.

Long. 14 millim. 9.

Hab. Mexico, Cordova ([ége).

Head a little (but distinctly) wider than the thorax, almost’ transverse before and

behind, the posterior margin broadly rounded ; closely and rather coarsely punctured,

SPH EROPHTHALMA 329

and covered with a thick silvery pubescence; the vertex broadly ferruginous; the

clypeus fringed with long pale fulvous hair; the mandibles entirely black. The scape

of the antenne covered with white hair; the flagellum brownish beneath; the third

joint about twice the length of the fourth, not much narrower at the base than at the

apex. The thorax is not much longer than the head, the base rounded; sharply

narrowed from the tubercle ; the edges rough, the sides of the median segment denti-

culate; coarsely punctured, and covered with white hair; the apex black (the black

triangularly projecting in the middle), obliquely rounded, densely covered with long

white hair. The pleure shining, impunctate, except at the apex, which has some

moderately large punctures ; covered with a short white pile. The basal segment of

the abdomen covered with long white hair ; on the base of the second segment are two

oval transverse orange marks, and at the apex are two larger round ones; the third and

following segments are covered with white hair; the pygidium black, covered with

pale fulvous hair. The first ventral segment. triangular at the base, shining, the sides

depressed, the keel blunt, rising gradually at the base; the punctures on the second

segment large and irregular; the apices of the segments fringed with white hair.

The femora and tibie sparingly covered with long whitish hair, that on the tibie

having a fulvous tinge; the pubescence on the tarsi bright ferruginous.

“/ 33. Spherophthalma mirandillensis.

Hab. Guatemata, Mirandilla 1700 feet (Champion).

Agrees almost’ in coloration with S. cordovensis, except that the pleure are reddish

at the base, and that there is a black triangular mark at the base of the mesonotum ;

also differs in the hinder edges of the head not being broadly rounded, while behind it

is distinctly convex. -

Head distinctly wider than the thorax, transverse in front, convex behind; the

edges rounded posteriorly, but not broadly ; coarsely punctured ; the vertex ferrugi-

nous, the hair on it black; the apex of the clypeus rounded, dull piceous; the

‘mandibles ferruginous before the apex, their base bearing long white hair. ‘The scape

of the antennz covered with white hair, its apex ferruginous; the flagellum obscure

brownish beneath ; the third joint distinctly narrowed at the base, rather more than

twice the length of the fourth. ‘The thorax not much longer than the head, coarsely

punctured ; the mesonotum bearing blackish hair, the median segment with longer

white hair; the base rounded; the apical half distinctly narrowed; the apex with

the sides coarsely toothed at the base, oblique; ferruginows, a somewhat triangular

elongate mark at the base and apex black. There isa subtriangular ferruginous mark

on the pleure at the base, the central part of this being striolated ; the apex has

widely-separated punctures ; the base of the mesopleure is obscure ferruginous. The

BIOL. CENTR.-AMER., Hymenopt., Vol. II., January 1899. | 2 UU

$30 7 ‘HYMENOPTERA. °

basal abdominal segment is covered with long white hair; at the base of the second

segment are two small orange marks, and at the apex two roundish-oval ones, the latter

more than twice the size of the basal marks ; the third to the fifth segments are covered.

with pale fulvous hair; the pygidium is densely clothed with bright golden hair. The

basal ventral segment is depressed in the middle and furrowed along the sides; there

is no keel in the centre of the apical portion. ‘The second segment is impressed with

large and irregular punctures, and it is covered with long whitish hair, this being also

the case with the other segments, which are closely punctured. The coxe, femora,

and tibiz are covered with long white hair, the tarsi with ferruginous hair; the

calcaria are white; the tibial spines are long, sharp, and reddish.

The next three species are deep velvety black throughout, and bear silvery marks and

spots on the thorax and head. ‘They may be separated as follows :— |

1 (2). The flagellum of the antennz rufous; the head behind developed

twice the length of the eyes and without silvery marks . . . . wanthocerata.

2 (1). The antenne entirely black; the head behind not twice the length

of the eyes, and with silvery marks. .

3 (4). The vertex with two small silvery marks; the thorax with four

silvery marks, the spine on the middle curved, twice as long as

broad 2 1 ww ee ee ew we we ee ee we psec.

4 (3). The vertex with one large silvery patch; the thorax with a silvery

patch, the spine on the middle not twice as long as broad . . . areta.

v 34. Spherophthalma xanthocerata. (Tab. XIV. fig. 14, 2.)

Mutilla xanthocerata, Smith, Trans. Ent. Soc. Lond. 3rd ser. i. p. 351; Gerst. Archiv f. Naturg.

xl. p. 56%.

Hab. Panama (Stretch +), Bugaba 800 to 1500 feet, Tolé ( Champion), Veragua 2.

Smith? says that the thorax has three obtuse teeth on each side before the middle,

an expression which I do not. quite understand. In the ten specimens before me the

middle is contracted; at the base of the contraction is a stout tooth, then there is a

blunt, smaller, rounded projection, followed by the usual smooth tubercle at the base

of the median segment. At the side of the pronotum are two small tubercles—one at

the outer edge, the other inside it; the sides are oblique, and end at the apex in a

triangular incision. The mesopleure above at the hinder part smooth, glabrous, and

impunctate ; the rest covered with a short, sericeous, silvery pubescence, and with a

few long hairs. The apex of the metapleure bears some large punctures, there being

also a few at the base. The median segment has a gradually rounded slope. The

pygidium is bluntly keeled down the centre; at the base is some silvery pubescence,

SPHEZROPHTHALMA. 331

and it also bears some large black hairs. The scape of the antenne is thickly covered

with silvery or pale fulvous hair; the flagellum has a pale fulvous or silvery pile; the

third joint is twice the length of the fourth. The head behind does not project much

beyond the level of the eyes and is rounded.

JS 35. Spherophthalma ipsea. (Tab. XIV. fig. 16, 9.)

- Long. 16 millim. 9.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Head alutaceous, above the antenne strongly punctured, clothed all over with short,

thick, black hairs, and bearing also some long hairs; the antennal tubercle large,

shining, glabrous; the oral region covered with long pale fuscous hair; the part

behind the eyes does not equal the eyes in length, and is rounded; on the vertex and

touching the eyes are two patches of golden pubescence. The scape of the antenne is

clothed with long silvery hair; the second joint is covered with shorter hair; the other

joints are clothed with silvery pubescence ; the third joint is about twice the length of

the fourth. The pronotum is shining, impunctate, and almost glabrous. The meso-

notum velvety, the base bearing some long black hairs; at the apex is a broad band of

silvery pubescence, with a square dilatation behind; at the base it is oblique, the

oblique part having a small tubercle at the base and apex; the apical half is almost

straight and ends in a long smooth tooth, and from this tooth it becomes narrowed to

the tubercle at the base of the median segment, this tubercle being large; the sides of

the median segment are bluntly and roundly denticulate. The mesopleure have the

basal half impressed with widely-separated punctures, the apical half smooth and_

impunctate, but with the apex crenulated. The apex of the metapleure is coarsely

punctured, and on the lower part is a patch of pale golden pubescence. The apex of

the median segment has a sharply oblique slope, and down the sides is a moderately

broad pale golden band. On the apex of the basal abdominal segment is a broad

pale golden line; on the second segment are two pale golden oval marks, the lower

part of the sides being covered with silvery pubescence, above which is a line of punc-

tures; the third and following segments are lined laterally with pale golden pubescence ;

the pygidium is indistinctly punctured, the sides covered with long pale golden hair.

The basal ventral segment shagreened, keeled down the centre and at the sides; the

second segment with large, distinctly separated, round punctures, and fringed at the

apex with silvery pubescence ; the other ventral segments with the punctures smaller,

and also fringed with silvery pubescence. The legs are covered with silvery hair; on

the tarsi the pubescence is dense and golden; the tibial spines long, black, and sharp;

the tibize punctured; the calcaria white.

This species is nearly related to S. canthocerata, but that insect is longer, and has

the head much more developed behind the eyes and without golden marks; S. xantho-

| 2 uv 2

832 - HYMENOPTERA.

cerata, moreover, has two oblique marks of silvery pubescence on the mesonotum and

the flagellum of the antenne reddish.

\ 36. Sphezrophthalma areta. (Tab. XIV. fig. 12, 2.)

Long. 11 millim. 9.

Hab. Panama, Bugaba, 800 to 1500 feet (Champion).

Head a little wider than the thorax, closely and coarsely punctured; a large square

patch of golden pubescence on the vertex, the sides of the vertex and the front sparsely

covered with rather long black hair ; the oral region and the lower outer orbits covered —

with silvery hair; the base of the mandibles covered with longish silvery hair; the

antennal tubercles shining, impunctate. The eyes project beyond the back portion of |

the head, this being about one-fourth longer than the width of the eyes. The scape

of the antenne slender, curved, and covered with rather long silvery hair; the base of

the flagellum with shorter hair; the third joint about as long as the fourth and fifth

joints united ; the apical joints beneath reddish. The thorax above coarsely punctured

and covered with short black hair; down the sides from the middle is a broad band

of scattered golden hair. The base of the mesothorax is transverse, with the angles

acute and triangular on the lower middle portion, the upper part being narrowed and

rounded ; the basal part is broad, with the sides straight and ending in a sharp

triangular tooth, there being also a blunt intermediate tubercle. The median segment

is narrowed and stoutly denticulate at the sides; the apex is oblique. ‘The pleure

are smooth and impunctate, the lower part in the middle with silvery pile; there is

an oblique keel on the mesopleura. ‘The basal‘abdominal segment has no mark; the

sides have long silvery hair. The second segment is closely and coarsely punctured,

and covered with stiff, black, short hair; at the extreme base are two small oval

marks, and nearer the apex are two larger oval marks of a more yellowish hue. The

other segments are fringed laterally with long white hair. The ventral segments are

fringed with long silvery hair; the basal segment is keeled in the middle, but not at

the sides, and the apex is oblique. The legs bear long silvery hair; the tibial spurs

are of moderate length and are curved ; the calcaria are white.

Compared with S. ipsea this is a smaller and narrower insect, and, apart from the

different arrangement of the markings, may be easily known from it by the head

being much more developed behind the eyes.

The following three species have the head, thorax, abdomen, and legs black; the

head and thorax bearing silvery pubescence ; the abdomen with two large orange or

golden macule :—

SPH ZROPHTHALMA. 333

I (2). The head transverse behind . . .

2 (1). The head roundly convex behind.

3 (4). The part of the head behind the eyes more than twice their length; a

® ° ° ° . e ° e ° . e cleonica.

4. (3). The part of the head behind the eyes not twice their length; no tooth

37. Spherophthalma cleonica. (Tab. XIV. fig. 17, ¢.)

Hab. Mexico, Temax in North Yucatan (Gauwmer).

Head slightly wider than the thorax, punctured, densely covered all over with a

thick dull silvery pubescence; the eyes projecting beyond the posterior part, which is

a little longer than their diameter; behind it is transverse, but with the sides rounded ;

the apex of the clypeus almost transverse ; the mandibles for the greater part ferru-

ginous. The scape of the antenne sparsely pilose; the flagellum more or less dull

ferruginous beneath ; the third joint hardly one-half longer than the fourth. The

mesonotum is rounded at the base ; very coarsely punctured and sparsely haired; the

basal half rounded, dilated ; the apical half narrower, but dilated at the extreme

apex; on the basal half are two small teeth, and there is another small one at its

apex; the tubercle shining, large. The median segment is sharply oblique at the

apex; the top rounded. The basal part of the propleure is depressed, but not exca-

vated, shining, very finely striated, and reddish in colour; the apical part projects

sharply from it, is somewhat triangular, and closely punctured. The mesopleure are

finely shagreened. ‘The metapleure are impunctate, shining, and shallowly excavated.

The first and second segments of the abdomen black, closely punctured and covered

with short, depressed black hair; the second segment with two large oval macule of

golden hair; the other segments covered all over with golden hair, which 1s of a paler

hue than the macule. The base of the first ventral segment is ferruginous, rounded,

broader than long; the keel a little dilated at the base. The punctuation of the

second segment is rather strong, that of the others very fine and at the apical fourth

only. The second ventral segment bears white hair all over ; the others are fringed

with long white hair at the apex. The femora are sparsely, and the tibie and tarsi

densely, covered with long white hair; the tibial spines long; the calcaria white.

In having the eyes projecting beyond the back part of the head this species agrees

with S. janira, but it differs from that insect in the following characters :—the upper

part of the propleure does not project into a distinct tooth visible from above; the

middle of the thorax is much more deeply incised and toothed, it being also of about

the same width as the head (in S. janira the head is distinctly wider than the thorax) ;

the thorax wants the silvery pubescence; the third and following abdominal segments

334 , HYMENOPTERA.

are densely covered with golden pubescence; the head is entirely black; and only the

basal part of the pleurz is ferruginous.

J 38, Spherophthalma janira.

Long. fere 9 millim. 9.

Hab. Mexico, North Yucatan (Gaamer). ° °

Similar in general form and coloration to S. amphissa, but differing essentially from it

in the thorax not being much longer than the head (in S. amphissa it is nearly twice

as long); the propleure are deeply excavated in the middle and at the tip of the apex

project into a blunt tooth ; the incision on the sides of the mesonotum is much less

deep; the eyes project beyond the hind part of the head; and the third antennal joint

is shorter compared to the fourth. ,

Head coarsely punctured, the top covered with golden pubescence, the other parts

bearing silvery hair; the part behind the eyes quite twice their length, becoming a

little dilated posteriorly (but still not extending beyond the eyes); the occiput trans-

verse; the sides broadly rounded; below the eyes the colour is ferruginous; the

mandibles are for the greater part ferruginous. ‘The scape and the base of the

flagellum are more or less ferruginous; the third joint about one-quarter longer than

the fourth. The mesonotum is coarsely punctured ; the middle with a large patch of

silvery pubescence, the base rounded; from the projecting part of the pleure the

mesonotum becomes narrowed slightly to the apex, and at the tubercle it retreats

inwardly a little; the median segment has an oblique slope. The pleure are ferru-

ginous, punctured; the propleura deeply excavated in the middle, and at the apex

above it projects into a large stout triangular tooth, which is very distinct when viewed

from above. The abdomen is closely punctured; on the second segment are two large

round orange marks; the apical segments are pale ferruginous at the apex and fringed

with pale hair; the pygidium is entirely pale ferruginous and shining. The basal

ventral segment is ferruginous, the keel a little oblique, and straight throughout; the

other ventral segment punctured and more or less ferruginous. The legs are covered

with white hair; the apices of the tarsal joints with fiery-ferruginous hair; the tibial

spines. rather long and slender.

V 39, Spherophthalma panamensis.

‘Long. 7 millim. 9. |

Hab. Panama, Bugaba (Champion).

Easily known from the foregoing species, S. cleonica and S. janira, by the part of

the head behind the eyes being rather obliquely narrowed and not equalling their

diameter, and by the very distinctly roundly convex occiput.

Head, if anything, wider than the thorax, somewhat coarsely and strongly punctured ;

SPH ZROPHTHALMA. 335

the vertex with a large mark of golden pubescence, its sides with some long black

hairs ; the front with some pale golden pubescence; the apex of the clypeus rounded ;

the base of the mandibles broadly ferruginous, and covered with long pale hairs,

furrowed. The scape of the antennz covered with silvery hair; the flagellum with

silvery pubescence ; the third joint twice the length of the fourth. ‘The thorax is

coarsely punctured, not very much longer than the head, and narrowed towards the

apex; the base is rounded; the apex sharply oblique; the middle with a shallow

indentation ; along the sides are.two belts of golden pubescence. The basal segment

of the abdomen bears long white hair. The second segment bears short depressed

black hair, and laterally a silvery pubescence ; at the base are two small pale orange .

marks, and nearer the apex are two large transverse oval macule of golden hair. The

third to the fifth segments are finely and closely punctured at the apex, and fringed

with pale silvery hair. The pygidium is densely covered with golden pubescence.

The next species agrees almost in coloration with S. phedyma and SN. lycimnia, it

having the head covered with a dense fulvous pubescence, this being also the case with

the mesonotum, and the abdomen has two large and two small orange marks, the legs

being black. JS. sonorensis, however, may be easily separated from these species by the

head being broadly rounded posteriorly, and not keeled down the edges, it being also

convex, not slightly concave behind.

/40. Spherophthalma sonorensis. (Tab. XIV. fig. 18, 2.)

Long. 8 millim. 9.

Hab. Mexico, Northern Sonora (Morrison).

Entirely ferruginous, except the apical segments of the abdomen, which are blackish

in the middle. The head densely covered with pale hair, small, much narrower than

the thorax, rounded in front, almost transverse behind ; the eyes not projecting; the

part behind them not much longer than their width, hardly narrowed, the edges

rounded; the tips of the mandibles blackish. The antenne thick; the scape bare ;

the third joint rather more than one-half longer than the fourth. ‘The thorax twice

the length of the head; the base transverse, raised above the level of the head; the

sides straight, without teeth or tubercle, not, or hardly, narrowed towards the apex ;

densely covered with long pale hair; the apex of the median segment with an oblique

slope. The pleure are shining and covered with long white hair. The abdomen is

longer than the head and thorax united; the base rounded; the segments from the

- second becoming gradually and rather sharply narrowed towards the apex; the second

segment strongly punctured, the punctures clearly separated; the third, fourth, and

fifth segments fringed with. silvery pubescence; the pygidium smooth, shining, im-

336 _ HYMENOPTERA. |

unctate, and fringed with long white hair laterally ; the entire abdomen thickly haired,

the segments fringed with silvery pubescence. The legs ferruginous, densely covered

with silvery hair; the tibiz without spines. |

The remaining species are small (from 4—8 millim.), and all have the head more or

less black, the thorax ferruginous, and the abdomen black or ferruginous, marked with

black.

a. The head for the greater part black. (Species 41-44.)

1 (2). The thorax not incised in the middle. . . . . . . . . «= %tncognata, munda.

2 (1). The thorax incised in the middle. ;

3 (4). The abdomen with four golden marks; length 8 millim. . . . chontalensis.

4 (3). The abdomen with a golden band; length 4 millim.. . . . . verepacis.

J 41. Spherophthalma incognata.

Long. 6 millim. @.

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

Head a little wider than the thorax, rugosely punctured, black ; the front and oral

region ferruginous; the vertex covered with a dense golden pubescence ; the eyes

project beyond the hinder part of the head, which is somewhat roundly narrowed, its

edges being rounded; the part behind the eyes equals them in length; in front the

head is, if anything, convex, behind it is semitransverse, almost concave; the apex of

the clypeus is transverse; ‘the tips only of the mandibles are blackish. ‘The scape of —

the antenne is almost bare; the joints of the flagellum are slightly marked with

fuscous above; the third joint is hardly twice the length of the fourth. The thorax

above is transverse in the middle at the base, the sides being somewhat obliquely

rounded ; the mesonotum and median segment are coarsely punctured, the mesonotum

bearing a short golden pubescence; the median segment is more or less blackish, has

a gradually rounded slope, and bears long black hairs; the sides of the mesonotum are

very slightly narrowed and have before the middle a projecting blunt tooth ; the sides

of the median segment are bluntly toothed. The base of the propleure is coarsely

punctured ; the mesopleure bear a whitish pubescence ; the apex of the metapleure is

blackish. The basal segment of the abdomen is dull ferruginous, and is covered with

long fuscous hair. The second segment has two oval transverse yellow macule; the

sides from these are ferruginous, except at the apex; the macule and the ferruginous

part covered with golden pubescence. The third and following segments are covered

with long fulvous hair; the fourth segment and the pygidium towards the apex dull

testaceous. ‘The first ventral segment is testaceous; the base is rounded; the keel on

the apical part is small but distinct, and does not project appreciably at the base. The

SPH FROPHTHALMA. 337

second segment is ferruginous; its punctures are large and widely separated, the

pubescence sparse. The other ventral segments are blackish, and bear rather long

hair; they are punctured towards the apex. The legs are reddish, the knees fuscous ;

the hair on the femora moderately long, white, and sparse, that on the tibie still

sparser; the pubescence on the tibie is close; the spurs are long and sharp.

S. incognata may be a form of S. munda; but the keel on the basal ventral segment

is less distinct; there is no red mark on the vertex, and the golden pubescence on it

is much denser; and the tibie are shorter and thicker.

\ 49, Spherophthalma munda. (Tab. XIV. fig. 19, 9.)

Long. 7 millim. @.

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

Head a little wider than the thorax ; the eyes projecting, the part of the head behind

them obliquely narrowed, rounded at the sides, and about equalling the eyes in length ;

coarsely rugose, covered with silvery pubescence; the front and oral region are

ferruginous, the black in the middle being triangularly incised, and there is a ferru-

ginous mark on the vertex; the clypeus projects a little, its apex being transverse.

The mandibles ferruginous, the apical teeth black; they are not grooved and bear long

pale fulvous hair. The antenne ferruginous; the apical joints of the flagellum blackish

above; the third joint about twice the length of the fourth. ‘The thorax is rounded

at the base, the apex with an oblique slope ; the sides at the base are straight ; at the

tubercle is a small incision, from which the thorax becomes gradually and slightly

narrowed ; the sides of the median segment stoutly toothed. ‘The propleure stoutly

punctured; the meso- and metapleure smooth, shining. The basal segment of the

abdomen is ferruginous and covered with long hair; the two oval macule on the

second segment are yellow, and attached to them are two large marks, which extend

to the base but not to the apex; the other segments are covered with pale fulvous

hair. ‘The first two ventral segments are ferruginous ; the basal segment is distinctly

keeled, the basal half of the keel being dilated ; the second segment has the punctures

large, the other segments have them close and minute. The legs ferruginous, slender ;

the hinder tibie with three long fulvous spines.

V 43. Sphzrophthalma chontalensis. (Tab. XIV. fig. 20, 2.)

Long. 8 millim. 9.

Haé. Nicaracua, Chontales (Janson).

Very similar to S. cephalica, but differing in there being only one incision in the

sides of the thorax (the small one, toothed at the base and apex, being absent), the

base of the thorax distinctly rounded, and the base of the flagellum thinner; on the

base of the second abdominal segment are two separated lines; the two oval macule

BIOL. CENTR.-AMER., Hymenopt., Vol. II., January 1895. 2 xx

338 . HYMENOPTERA.

are much smaller, and do not reach the sides; and the basal ventral segment is

distinctly keeled. /

Head, if anything, narrower than the thorax, slightly convex in front and behind ;

the eyes hardly projecting beyond the back part of the head, which is straight and does

not equal them in length, the edges being rounded ; rather coarsely punctured, covered

with golden and silvery pubescence; black, the front for the greater part ferruginous ;

the clypeus dull reddish in the middle, its apex transverse; the mandibles black, the

base ferruginous, the middle deeply grooved. The scape and the two basal joints of

the flagellum more or less ferruginous; the third joint twice the length of the fourth.

The thorax rounded at the base, the apex with a semioblique slope, the top broadly

rounded ; the sides at the basal half straight, the apex broadly incised and with two

stout tubercles before the incision. The propleure at the base punctured; the meso-

and metapleure impunctate, the apex blackish. The basal segment of the abdomen

densely covered with long white hair; the small basal marks on the second segment

are golden, the larger marks yellow; the third to the fifth segments densely covered

with silvery hair; the pygidium with long fulvous hair. The basal ventral segment is

testaceous, the others black; the keel on the apical part of the first segment is distinct,

broad, and at the top is clearly separated from the basal region; the punctures on the

second segment are large, those on the other segments fine and close; the hypopygium

is testaceous ; the hair is long and white. The coxe, femora, and tarsi are obscure

ferruginous; the tibiz are more or less blackish, their spines long, sharp, and also

blackish. |

NI 44. Spherophthalma verepacis.

Long. 4 millim. 9.

Hab. Guatemaa, Purula in Vera Paz (Champion).

Head wider than the thorax, closely punctured; above bearing long fuscous hairs ;

on the face the pubescence is silvery; the eyes are prominent, not reaching to the top,

the head well developed and not narrowed behind them; at the back, at the sides,

there isa projecting tubercle. The scape of the antenne is densely covered with

white hair; the flagellum bears a pale down. The thorax is broad in front, consider-

ably narrowed behind, coarsely punctured, and bears long black hair; the pronotum is

transverse, the sides rounded. ‘The mesonotum is excavated deeply in the middle; at

the base are two blunt teeth ; there is a blunt tooth in the deeply incised middle, and

at the apex are one blunt and two sharper and longer teeth, followed by another blunt

one. ‘The pleure are excavated, shining, glabrous, impunctate. ‘The median segment

is clothed with long white hair. The abdomen is a little broader than the thorax;

the basal segment becomes gradually dilated towards the apex and is confluent with

‘the second, its apex, and also the base of the second segment, smooth, shining, im-

SPH EROPHTHALMA. 339

punctate, the rest of the segment being closely punctured; the second segment is

closely, rugosely punctured; the third segment is shining, finely transversely striated.

The first and second segments bear long black hairs; the fourth and following segments

are fringed with longish silvery hair; the basal segment is reddish, suffused with black,

the second black, with two transverse yellow marks bordered with reddish, the third

blackish at the apex, reddish at the base, the others black. The legs covered with

silvery hair ; the hinder femora suffused with fuscous.

b. The head ferruginous. (Species 45-52.)

1 (2). The thorax laterally with long sharp spines. . . . . . . « « . subgracilis.

. The thorax without long spines.

cs)

—_a

. The abdomen black, with four yellow marks on the second segment; the

4 (3). The abdomen for the greater part ferruginous, without yellow marks ;

the thorax not deeply incised.

5 (6). The thorax at the apex with short blunt teeth . . . . . . . . .. odiosa,

6 (5).:-The thorax at the apex without teeth.

7 (12). The second abdominal segment without a broad yellow band.

8 (9). The thorax elongate, narrowed towards the apex, and with four black

marks down the sides above, much narrower than the head . . . . ludovica.

9 (8). The thorax not elongate, not narrowed towards the apex, and without

black marks.

.0 (11), The thorax a little incised at the middle, entirely ferruginous ; the black

marks at the base of the second abdominal segment widely separated . rustica.

11 (10). The thorax not incised, and with a black line down the middle . . . ingrata.

12 (7). The abdomen black, with a broad yellow band on the second segment.

13 (14). The part of the head behind the eyes equalling them in length; the apex

of the abdomen black . . . . minutoria.

14 (13). The part of the head behind the eyes not equalling them j in ‘ength ; ; the

apex of the abdomen golden . . . . . . . . 1. we es gratiosa.

VV 45. Spherophthalma subgracilis. (Tab. XIV. fig. 21, 2.)

‘Long. 6 millim. @.

Had. Panama, Volcan de Chiriqui 4000 feet (Champion).

Colour rufo-testaceous, the apex of the second, and the third and fourth abdominal

segments black. Head with the eyes a little wider than the thorax, slightly convex in

front, much narrowed behind, the hinder angles rounded, the central part somewhat

convex ; the part behind the eyes slightly exceeding them in length, the eyes them-

selves projecting largely ; finely rugose, and covered with a golden pubescence, but not

so thickly as to hide the sculpture; the clypeus impunctate, shining; the mandibles

entirely ferruginous, sparsely covered at the basal half with long nairs. The scape of

2xx 2

340 . HYMENOPTERA.

the antenne shining, sparsely haired, much brighter in tint than the flagellum; the

third joint is not quite the length of the fourth. The thorax elongate, rounded in

front, narrowed behind ; the middle with a shallow contraction; in front of the con-

traction are two stout teeth, the basal one being the shorter and thicker of the two.

The median segment with a gradually rounded slope, and with a distinct keel down its

middle ; on the edges are four large, thick, slightly curved teeth ; it bears some long

hairs. The upper part of the thorax sculptured like the head, and bearing a short

white pubescence and some white hairs. The posterior part of the propleure rather

coarsely punctured, and with two tubercles at the top; the meso- and metapleure

shining, impunctate. The basal segment of the abdomen finely punctured and covered

with long white hair. The second segment more strongly punctured, and bearing

some blackish hairs; at the base is a short longitudinal line of pale golden hair, and

there is a broader transverse band at the apex, the apex itself being black. The third

to the fifth segments are blackish, covered with golden pubescence. The pygidium is

shining, impunctate, covered with long hairs. ‘The keel on the basal ventral segment

projects as a curved tooth ; the second segment with large, distinctly separated punc-

tures; the other ventral segments minutely punctured. The legs are covered with

white hair.

A second specimen from the same locality wants the keel on the median segment ;

it is apparently a variety of the same species,

J 46. Spherophthalma cephalica. (Tab. XIV. fig. 22, ¢.)

Long. fere 8 millim. 9.

Hab. Guatemata, Las Mercedes 3000 feet (Champion).

Head a little wider than the thorax, slightly convex in front and behind; the eyes

projecting beyond the back part of the head, which does not equal the eyes in length

and is not narrowed behind; the hinder edges rounded, coarsely punctured, covered

with glistening white hair; the oral and antennal region narrowed, the front projecting

widely over them ; the apex of the clypeus transverse, ferruginous ; the hinder part of

the vertex, the occiput, the apices of the mandibles, and the outer orbits for the greater

part, black. The scape of the antenne ferruginous, sparsely covered with white hair ;

the flagellum brownish beneath, blackish above; the third joint twice the length of

the fourth. The thorax above coarsely punctured, sparsely covered with short silvery

hair; the base transverse, the apex with a sharp slope, rounded at the top; the basal

half at the sides is straight, then there is a small rounded curve, toothed at the base

and apex, followed by a wider incurvation, the basal part of which is tuberculate ;

there is a black somewhat rounded mark at the base in the centre, and there is a

longer black mark at the apex, which becomes gradually widened from the base. The

basal triangular part of the propleure is punctured ; the rest, and also the meso- and

SPH EROPHTHALMA. . 341

metapleurz, smooth, shining, impunctate; the apex blackish. The basal segment of

the abdomen is black, covered with rather long pale hair. The second segment is

black ; at the base there is a flavo-rufous mark, dilated at the sides; beyond this are

two large transverse oval yellow macule, edged with dull ferruginous, and nearly

uniting in the centre. The third to the fifth segments are covered with silvery hair;

the pygidium is densely clothed with long golden hair. The ventral surface is ferru-

ginous, but the apical segments are more or less black; the basal segment has no keel,

the apical part being broad ; the second segment has the punctures moderately large

and widely separated; the other segments are finely punctured at the apex and are

fringed with long silvery hair. The legs are ferruginous, the knees and part of the

four hinder tibiz blackish; the tibiz and tarsi are covered with white hair.

V a7, Sphzrophthalma odiosa.

Long. 7 millim. ¢@.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Head not much wider than the thorax; the eyes projecting, the head behind them

roundly narrowed, rounded at the edges, not equalling the eyes in length; rugosely

punctured, covered with a short golden pubescence, and with a few longer black hairs ;

ferruginous, the occiput and the outer orbits black ; the apex of the mandibles trans-

verse, blackish. The scape of the antenne covered with long, soft white hairs; the

third joint about one and a half times longer than the fourth ; the apical joints blackish.

The base of the thorax is convex; the edges end in a short, blunt, triangular tooth ;

the basal half gradually becomes slightly dilated and ends in two sharp teeth, the apical

tooth being the longer; from there the thorax isa little narrowed; the median segment

has a gradually rounded slope, its sides being stoutly toothed. The thorax is ferru-

ginous, the base, a line down the centre, dilated on either side at the middle, and the

greater part of the metapleure, black ; coarsely punctured, above covered with a silvery

and golden pubescence. ‘The apical part of the propleure impunctate, bearing a

microscopic white pubescence, and bluntly tuberculate above. The basal segment of

the abdomen ferruginous, and covered with long white hair, the apex having a narrow

fringe of golden pubescence, from which a line of golden pubescence runs down the

basal third of the second segment; the sides and apex of the second segment are

covered with golden pubescence, and from the apical band a line of golden pubescence

runs down to the apex; the sides of the segments are also covered with golden hair

and are ferruginous in colour. The first ventral segment is testaceous; the basal part

is rounded, the apical part with a distinct tooth. The second ventral segment is black,

ferruginous down the middle and at the apex; the punctures not very large, the hair

long, sparse, and white ; on its base is a transverse keel. The other ventral segments

are ferruginous and covered with long white hair; they have their apices finely and.

342 . HYMENOPTERA.

closely punctured. The legs entirely ferruginous, the hair white; the tibial. spines

long, sharp, and ferruginous; the tarsal spines bright ferruginous.

J 48. Spherophthalma Indovica. (Tab. XIV. fig. 24, 2 )

Long. 8 millim. @.

Hab. Panama, Voican de Chiriqui 3000 feet (Champion).

Head distinctly wider than the thorax, the part behind the eyes roundly narrowed

and not equalling half their diameter ; ferr uginous, the vertex black, with a small

ferruginous mark in the centre, which bears a bright golden pubescence ; the front

with silvery pubescence; the mandibles ferruginous, the tips black. The antenne

rather stout, ferruginous; the apical four joints black; the third joint not much longer

than the fourth. The thorax with a distinct neck, the part immediately behind the

neck rounded, the middle very slightly incurved, the apex with a semiobliquely rounded

slope; finely and closely coriaceous; the pleure shining, except a small punctured

part on the mesopleure in the middle at the top, which is black; in front of the

mesonotum are two oblique black marks, and on either side of the median segment are

two broad black longitudinal lines, extending to the apex. ‘The abdomen is elongate,

longer than the head and thorax united, ferruginous, punctured ; the first and second

segments are covered with silvery and golden pubescence; on the base of the second

segment are two large, somewhat triangular black marks united at the apex; the

pygidium is thickly covered with golden hair. ‘The basal ventral segment has a distinct

keel, the apex of which is oblique; the second segment is strongly punctured; the

third and fourth ventral segments, and the base of the fifth, are black, the apex of the

fifth and the sixth ferruginous. The legs are ferruginous, the hairs on the tibie

golden.

J 4g. Sphzrophthalma rustica.

Long. 7millim. 9.

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

- Head distinctly wider than the thorax; the eyes largely projecting, a little longer

than the hinder part of the head, which is roundly narrowed ; ferruginous, the hinder

orbits black ; covered with a short golden pubescence and with some long black hairs;

the apex of the clypeus is distinctly transverse. The mandibles are almost entirely

ferruginous ; they are slightly punctured and clothed with golden hairs. ‘The scape and

the second joint of the antenne are reddish, the scape with white hairs; the third.

joint is about one and a half times longer than the fourth. The thorax is rounded at

the base; the apex has a semioblique slope, the top being broadly rounded; before

the middle is a stout triangular tooth, followed by a small rounded tubercle in front of

the usual tubercles ; the centre is distinctly but not deeply curved inwardly; the sides.

SPHZAROPHTHALMA. 343

of the apex with a row of. blunt tubercles. The thorax above is coarsely punctured,

especially at the apex, and bears long pale hairs; the apex of the median segment is

black. The pleure are impunctate, shining; the apex is blackish. The abdomen is

as long as the head and thorax united and is much broader than the head; the basal

segment is ferruginous ; the second segment is ferruginous at the base, where there are

two large round black marks, the middle ferruginous, suffused with yellow, the apex

broadly black ; the remaining segments are black; the pygidium is covered with long

pale fulvous hair. The keel on the basal ventral segment commences before the middle

of the segment and is distinct, but blunt. The second ventral segment is ferruginous,

except at the apex; the other ventral segments black. The legs are reddish-testaceous,

the apex of the femora and the knees black, the hinder tarsi infuscate.

v'50, Spherophthalma ingrata.

Long. fere 5 millim. 9°.

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

‘ Head very little wider than the thorax, not much narrowed behind the eyes, the

part behind them about one-fourth longer than their diameter, the hinder part only

very slightly and roundly concave ; ferruginous, the sides, occiput, and a line down the

centre of the vertex, black. ‘he antenne pale ferruginous, the apex black ; the third

joint not much longer than the fourth. The thorax broad, not narrowed towards the

apex nor in the middle, at the base almost transverse, the apex with an oblique slope

and without spines; ferruginons, a broad black stripe down the middle. 'The abdomen

is as long as the head and thorax united, equal in width to the thorax; ferruginous,

the second segment black, with a large mark at the base in the middle and two marks

on either side pale ferruginous; the apical segments are entirely ferruginous and

bear long pale hairs; the pygidium has a golden pubescence. ‘The ventral surface

ferruginous, except the third and fourth segments, which are black. The legs ferru-

ginous; the hind tibie rather stoutly spined.

WA 51. Spherophthalma minutoria. (Tab. XIV. fig. 26, ¢ .)

Long. 4 millim. @. .

Hab. GUATEMALA, near the city 5000 feet (Champion).

‘Head not much wider than the thorax, rounded in front, almost transverse behind,

with the sides rounded ; ferruginous, punctured, and covered with white hair; the eyes

slightly projecting, the part of the head behind them a little longer than their diameter ,

the tips of the mandibles blackish. The antenne stout, pale ferruginous, the apical

joints blackish ; the scape curved, bare; the third joint thinner, and not much longer,

than the fourth. The thorax a little longer than the head, rounded in front, not much,

if at all, narrowed towards the apex, the sides straight ; the apex with an oblique slope,

844 ; HYMENOPTERA.

the top rounded; above strongly punctured and sparsely covered with fuscous hair ;

the propleure punctured. The abdomen is slightly wider than the thorax, shorter than

the head and thorax united; the basal segment ferruginous, the apex fringed with

golden hair; the second segment punctured, black, with a broad pale yellowish band

in the middle; the other segments black, clothed with long black hairs; the pygidium

clothed laterally with long pale hairs. The legs are covered densely with long pale

fulvous hair; the femora black, the knees, tibiee, and tarsi testaceous.

M59, Spherophthalma gratiosa.

Long. fere 5 millim. 9.

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

Head wider than the thorax, rounded in front, distinctly concave behind; the eyes

large, the part of the head behind them not half their length; ferruginous, covered

with golden pubescence. The antenne pale ferruginous, the apical two joints black ;

the scape curved, bare, the third and fourth joints subequal. The thorax ferruginous,

distinctly longer than the head, not much narrowed towards the apex, very slightly

contracted in the middle, the tubercle distinct; rounded in front, the apex with

an oblique slope, the sides tuberculate; above punctured and covered with golden

pubescence. The propleure closely punctured. ‘The abdomen longer than the head and

thorax united, sharply and gradually narrowed from the middle of the second segment

to the apex; the basal segment pale ferruginous, the apex with a band of pale golden

pubescence; the second segment black, and having a broad band of pale golden

pubescence in the middle; the third segment black; the other segments densely

covered with golden pubescence. The ventral segments pale ferruginous; the apices

fringed with fulvous hair. The legs pale ferruginous, covered rather densely with

fulvous hair.

In the coloration of the abdomen S. gratiosa agrees closely with S. minutoria, except

that the apical segments are densely covered with golden hair; also differing from that

species in having the abdomen longer than the head and thorax united, the sides of

the median segment tuberculate, and the eyes very much larger.

The following species have been described by Smith so imperfectly, that Iam unable

to refer them to their proper section :—

\43. Spherophthalma luxuriosa.

Mutilla luxuriosa, Smith, Descr. of New Species of Hymen. p. 224.

Spherophthalma luxuriosa, Blake, Trans. Am. Ent. Soc. xiii. p. 255 ?.

Hab. Mexico}.

SPH EROPHTHALMA, 345

54. Spherophthalma vulpina.

Mutilla vulpina, Smith, Descr. of New Species of Hymen. p. 2257.

Spherophthalma vulpina, Blake, Trans. Am. Ent. Soc. xiii. p. 255%.

_ Hab. Mexico, Oaxaca !.

V 55. Spherophthalma derelicta.

Mutilla derelicta, Smith, Descr. of New Species of Hymen. p. 226°.

Spherophthalma derelicta, Blake, Trans. Am. Ent. Soc. xiii. p. 255 ”.

Hab. Centra America |,

56. Spherophthalma macrocephala.

Mutilla macrocephala, Smith, Descr. of New Species of Hymen. p. 2237.

Spherophthalma macrocephala, Blake, Trans. Am. Ent. Soc. xiii. p. 256 ?.

Hab. Mexico, Orizaba }.

AM 57, Spherophthalma munifica.

Mutilla munifica, Smith, Descr. of New Species of Hymen. p. 223°.

Spherophthalma munifica, Blake, Trans. Am. Ent. Soe. xiii. p. 2567.

Hab. Mexico 1.

UV. e

*58. Spherophthalma ducalis.

Mutilla ducalis, Smith, Descr. of New Species of Hymen. p. 224°.

Spherophthalma ducalis, Blake, Trans. Am. Ent. Soc. xiii. p. 256°.

Hab. Mexico, Orizaba!.—SoutH America }.

rV59, Spherophthalma separata.

Mutilla separata, Smith, Descr. of New Species of Hymen. p. 227°.

Spherophthalma separata, Blake, Trans. Am. Ent. Soc. xiii. p. 257 *.

Hab. Mexico, Orizaba 1.

The following are the only males known of this section from our region :—

Y 60. Spherophthalma excentrica. (Tab. XIV. figg. 25; 25a, ¢ organ.)

Nigra; abdomine ceruleo, segmentis albo-hirsutis ; alis nigro-fuscis, basi hyalinis. ¢.

Long. 15 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

Head narrower than the thorax, deep black, strongly punctured; the front and

vertex bearing long pale fuscous hair, it being thickest on the back of the vertex; the

clypeus densely covered with long pale yellowish hair; the mandibles black, punctured

BIOL. CENTR.-AMER., Hymenopt., Vol. II., March 1895. 2 YY

346 HYMENOPTERA.

and covered with fuscous hair at the base; the eyes entire, projecting beyond the

hinder part of the head, which isa little shorter than their diameter; the occiput

slightly convex, rounded. The antenne are moderately stout ; the scape bearing long

pale hair, the flagellum with a silky down; the third and fourth joints are subequal.

The thorax deep black, strongly punctured, densely covered with black hair; the |

pronotum well developed, rounded in front, roundly concave behind; the scutellum

pyramidal, the bottom part strongly punctured and haired, the top smooth and shining, —

the apex almost perpendicular. The pleure are densely covered with long pale hair ; the

middle of the mesopleure projects into a large stout tubercle. The median segment is

_ oblique at the top; the apex rounded, the rest semioblique, bulging out in the middle;

at the base is a broad thick band of pale silvery pubescence; the sides are strongly

punctured. The abdomen is shining, bluish ; the second segment only very slightly,

the other segments more thickly and strongly punctured ; the basal segment sparsely

covered with pale hair; the base of the second segment broadly, and that of the third

and fourth segments more narrowly, edged with pale pubescence. The first ventral.

segment is strongly punctured at the base; the raised central part has on the lateral

portions a few punctures, and along its sides is a groove; the middle is rather blunt,

the apex oblique. The second ventral segment bears scattered punctures, and is fringed

with white hair along the sides. The other ventral segments are more strongly punc-

tured and fringed with pale hairs. The hypopygium is keeled in the middle; the sides

slightly hollowed and punctured. The legs (especially the tibiee and tarsi) are thickly

covered with white hair; the calcaria are white. Wings: the radial cellule projects

a little beyond the apex of the third cubital cellule; the basal abscissa of the radius is

a little curved, the apical abscissa elbowed a little below the middle; the top of the

second cubital cellule is shorter than the third; the first recurrent nervure is received

shortly before, the second a little beyond, the middle. The tegule are broad and shining.

V 61. Spherophthalma jaliscoensis. (Tab. XIV. fig. 23, ¢ .)

Long. 9 millim.. 6.

Hab. Mexico, Santiago Iscuintla in Jalisco (Schwmann).

Head very slightly rounded in front, transverse behind; black, densely covered with

long pale hair, punctured; the eyes large, longer than the space behind them; the

mandibles ferruginous before the apex. The antenne black; the scape punctured,

curved, and covered with long stiff white hair; the flagellum with a dull pile; the

third joint shorter than the fourth. The thorax rufous, punctured, covered with long

white hair; the hair on the mesonotum black, the pleure finely punctured, the meta- .

pleure, and also the median segment, reticulated; the scutellum flat, the hair at the

apex very thick. The abdomen longer than the head and thorax united, rufous,

covered with long white hair; all the segments at the apex thickly fringed with silvery

SPH EROPHTHALMA. | 347

hair; the second segment with widely separated punctures ; the other segments rather

. coarsely punctured. The basal ventral segment has the keel blunt, oblique at the

base and apex ; the other segments are strongly punctured and fringed with long pale

fulvous hair ; ferruginous, the apical segment black. The legs black, covered with

white hair; the calcaria long, stout, fuscous. Wings: the radial cellule extends

beyond the apex of the third cubital; the first abscissa of the radius is oblique, the

apical abscissa curved ; the first transverse cubital nervure is elbowed near the bottom,

the second is curved and approaches the first at the top, so that the part bounded by

them is less than the space bounded by the first recurrent and the second transverse

cubital nervures ; the first recurrent nervure is received shortly beyond the middle of

ithe cellule; the nervure bounding the third cubital cellule is very indistinct, the

cellule very much narrowed at the bottom, the nervure there being obliterated in

a small hyaline spot. The tegule are rufous and are densely covered with pale

fulvous hair.

69, Spherophthalma volatilis. (Tab. XIV. fig. 27, 6.)

Long. 9-10 millim. ¢.

Hab. Mexico, Teapa in Tabasco (H. H. Smith).

Head not much narrower than the thorax, almost transverse in front and behind,

rather strongly punctured, the punctures clearly separated ; covered with long fuscous.

hair; the hinder ocelli in pits; a broad shallow furrow runs down the front from the

anterior ocellus; the eyes are large, very shining, projecting, the part behind the

eyes equalling them in length, and broadly rounded at the sides; the mandibles are

entirely black. The antenne are of moderate thickness; the scape curved, covered

sparsely with long white hair; the flagellum bears a black microscopic down; the

third and fourth joints are subequal. The pronotum is rounded in front and behind,

closely punctured, and covered (particularly at the apex) with long pale hair. The

mesonotum is more strongly punctured, the punctures being larger and deeper ; it is

sparsely pilose. The median segment has agradually rounded slope and is reticulated.

The propleure are finely punctured above ; the mesopleure are densely covered with

greyish hair. The abdomen is as long as the head and thorax united; the basal

segment is black, except at the extreme apex, shining, punctured, the punetures wide

apart, and bearing long white hair; the second segment is bright lemon-yellow,

brownish at the base and apex; the other segments are black, fringed at the apices

with rufous hair. The keel on the basal ventral segment is sharply pointed and is

obliquely truncated at the apex. The ventral segments are entirely black ; the second

segment is strongly, the others finely and closely punctured, and all are fringed with

fulvous hair; the hypopygium is depressed, punctured, and densely covered with long

rufous hair. The legs are black and covered with pale silvery hair ; the calcaria white.

Qyryy 2

348 HYMENOPTERA.

Wings: the radial cellule extends beyond the apex of the third cubital cellule ; the

first abscissa of the radius is oblique, the apical abscissa curved ; the first transverse

cubital nervure is roundly elbowed at the middle, the second curved; the third cubital

cellule is complete and is much narrowed at the bottom; the first recurrent nervure is

received nearly in the middle of the cellule, the second almost interstitial. The tegule

are moderately large, shining, and have some glistening depressed hairs.

/ 63. Spherophthalma, intrepida.

Long. 7 millim. ¢. .

Hab. Mexico, Teapa in Tabasco (H. H. Smith).

Very nearly related to 8. volatilis, but smaller ; the abdomen from the basal segment

entirely rufous above and beneath; the second cubital cellule wider at the top, where

it is nearly as long as the space bounded by the first transverse cubital and the first —

recurrent nervures, the latter being distinctly received before the middle; the third

cubital cellule wider at the bottom and receiving the recurrent nervure in the middle ;

the entire thorax covered with long silvery hair.

Head as wide as the thorax, finely punctured, covered with long white hair; a

broad shallow furrow on the front; roundly narrowed behind the eyes, almost trans-

verse in front, rounded posteriorly. The antenne are stout; the scape shining and

sparsely covered with white hair; the third and fourth joints subequal. The pronotum

rounded at the base, semicircular at the apex, rather strongly punctured ; covered with

long fuscous hair, the apex with a fringe of shorter hair; the mesonotum shining,

bearing large clearly separated punctures; the scutellum with long pale hair; the

median segment reticulated; the mesopleure covered with long white hair. The

basal segment of the abdomen black, shining, punctured, bearing some long white hairs,

the other segments rufous ; the second segment punctured ; the apical segments fringed

densely with long rufous hair. The keel on the first ventral segment distinct, but

blunt, obliquely truncated at the base. The other ventral segments are rufous, except

the base of the second. The legs are black and are covered with white hair. Wings

pale fuscous; the radial cellule projecting considerably beyond the apex of the third

cubital cellule ; the basal and apical abscisse of the radius curved; the second cubital

cellule at the top as long as the part bounded by the first transverse cubital and the

first recurrent nervure, the latter being recurved before the middle of the cellule.

es Sphzrophthalma laticeps.

Mutilla laticeps, Blake, Trans. Am. Ent. Soe. iii. p. 2497.

Spherophthalma laticeps, Blake, op. cit. xiii. p. 244.

Hab. Muxico (Sumichrast 1),

SPH ZROPHTHALMA. 349

65. Sphezrophthalma xalapa.

Mutilla zalapa, Blake, Trans. Am. Ent. Soe. iil. p. 249°.

Spherophthalma xalapa, Blake, op. cit. xiii. p. 245°.

Hab. Mexico (Sumichrast } 2).

66. Spherophthalma zapoteca.

Mutilla zapoteca, Blake, Trans. Am. Ent. Soe. iil. p. 250°.

Spherophthalma zapoteca, Blake, op. cit. xiii. p. 2457.

Hab. Mexico (Sumichrast 1 *).

B. The basal segment of the abdomen not or feebly dilated towards the apex, and not

confluent with the second. (Species 67 eé seq.)

Ver Spherophthalma laothoe.

Rufo-brunnea, aureo-hirta ; pedibus brunneis; abdomine maculis 2 nigris. 92.

Long. fere 10 millim.

Hab. Mexico, San Blas in Jalisco (Schumann).

Head distinctly narrower than the thorax, ferruginous; the vertex and front densely

covered with golden pubescence ; the cheeks and clypeus with the pubescence longer

and more silvery ; in front distinctly rounded ; behind, the centre is transverse, with the

sides rounded ; the part behind the eyes not one-half their length. The mandibles

black, with the base ferruginous. The antenne of moderate thickness and black ; the

scape rufous, covered with golden hair; the basal joints of the flagellum dull reddish

beneath, the third joint about one-quarter longer than the fourth. The thorax is

twice the length of the head; the base almost transverse in the middle; from the

middle it becomes gradually narrowed to the apex, which has an oblique slope; ferru-

ginous ; the base of the mesonotum covered broadly with black hair, the rest of it and

the median segment covered densely with golden hair; the mesopleure densely

covered with long pale golden hair; the metapleure at the apex with large round

punctures. The abdomen is shorter than the head and thorax united, ferruginous,

the basal segment slightly and gradually dilated towards the apex ; coarsely punctured ;

sparsely covered with long pale hair; the apex with a dense band of silvery pubescence.

The second segment at the base has a large, somewhat oval, mark of black hairs, the

apex in the centre bears a patch of black hair, and the apex at the sides is fringed |

with silvery pubescence; the rest of the segment, except the black parts, having

scattered golden hairs. The third segment is black in the middle, the sides covered

-with golden hair ; the fourth and fifth segments are entirely covered with golden hair.

The pygidium is black, longitudinally striated, the apex entire; the sides fringed with

long black hairs. _ The basal ventral segment has a blunt keel, the apex with a rather

850 _ HYMENOPTERA.

long oblique slope ; the second segment punctured, sparsely covered with long fuscous

hair, the base in the middle black; the other segments fringed with pale golden

pubescence and bearing also long pale hair. ‘The legs are ferruginous ; the knees and

tibial spines blackish, the calearia ferruginous and black.

This species somewhat resembles S. swmichrasti in general coloration; but the

pubescence is distinctly golden, the head is smaller and is much less developed behind,

the third antennal joint is shorter compared to the fourth, the pronotum and the base

of the mesonotum are not covered with long fulvous hair, and the second abdominal

segment wants the two spots of golden pubescence. |

Vv 68. Spherophthalma phya.

Nigra; capite, thorace abdominisque apice albo-sericeo-hirtis ; abdominis segmento 2° maculis 2 flavis. 9.

Long. 8°5 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

The head with the eyes wider than the thorax, slightly rounded in front and behind ;

covered densely with a pale golden pubescence; the eyes much longer than the part

of the head behind them. The scape of the antenne covered with white hair; the

flagellum stout; the third joint not one-quarter longer than the fourth. The thorax

elongate, more than twice the length of the head, gradually narrowed from near the

base to the apex, the latter having a gradually rounded oblique slope; coarsely punc-

tured, sparsely covered with black hair, the median segment with a broad band of

silvery pubescence ; the mesopleure covered with silvery pubescence ; the metapleure

coarsely reticulated. ‘The abdomen is black, shorter than the head and thorax united ;

the basal segment is very coarsely punctured, sparsely covered with long white hair,

the base oblique; the second segment is punctured, but not so strongly as the first,

covered with long black hair, towards its apex are two round pale yellow marks; the

apical segments are covered all over with pale pubescence. There is no keel on the

-basal ventral segment. ‘The legs are black, very sparsely covered with pale hair; the

tibial spines and the calcaria black.

V 69. Spherophthalma proclea.

Nigra; capite, apice mesonoti apiceque abdominis argenteo-hirtis; abdominis segmento 2° maculis 4 pallide

auranteis, 9.

Long. 12 millim.

Hab. Mexico, Temax in North Yucatan (Gaumer).

The head a little narrower than the thorax, rounded in front and behind, densely

covered with pale fulvous pubescence; the basal half of the mandibles ferruginous.

The scape of the antenne curved, covered with long white hair; the flagellum brownish

beneath ; the third and fourth joints subequal. The thorax sharply narrowed from

SPH EROPHTHALMA. 351

the middle to the apex, the base broadly rounded, the apex with a semi-oblique slope ;

black, covered with black hairs; a broad curved band of pale golden pubescence on

the apex of the mesonotum ; the mesopleure with golden pubescence ; the apex of the

metapleure coarsely punctured. The abdomen a little longer than the head and

thorax united, and broader than the thorax, black ; the basal segment strongly punc-

tured and sparsely covered with long fuscous hair; on the base of the second segment

are two small round yellow marks, and towards the apex are two larger ones of the

same colour, which are broader than long; the fourth and fifth segments densely

covered with silvery pubescence; the pygidium finely longitudinally striolate and

fringed with long fuscous hair. The basal ventral segment has a long stout keel,

which is punctured, and more or less rufous; at the base it is nearly straight; the

apex is oblique. The second ventral segment is strongly punctured and sparsely

covered with long white hair. ‘The other ventral segments are thickly haired. The

legs are black and covered with long white hair; the calcaria and spines are black.

v7 0. Spherophthalma cobira.

Long. 12 millim. @.

Hab. Mexico, North Yucatan (Gawmer).

Very similar in coloration to S. proclea; but differing from it in having the third —

joint of the antenne double the length of the fourth, and in the four spots on the

second abdominal segment being reddish-orange (not yellow), the spots large, the

hinder pair more rounded in shape. The head subquadrate, nearly transverse in front,

rounded behind, densely covered with pale fulvous pubescence; the part behind the

eyes longer than their length ; the basal part of the mandibles rufous. The antenne

stout; the scape curved, covered with long white hair; the flagellum brownish

beneath; the third joint twice the length of the fourth. ‘The thorax black, covered

with black hair, gradually narrowed from the middle to the apex; a broad curved

band of white pubescence on the apex of the mesonotum ; the base rounded, the apex

with a semiperpendicular slope; the mesopleure strongly punctured and covered with

white hair; the apex of the metapleure much more strongly punctured than the

mesopleure. The abdomen black, covered with black hair ; the fourth and fifth

segments densely covered with silvery pubescence; on the second segment are four

large roundish orange spots, the hinder pair being the larger. ‘The pygidium

coriaceous, fringed with pale hair. The basal ventral segment with a stout keel,

hollowed in the centre, the apex oblique ; black, the rest of the segment rufous. The

second ventral segment strongly punctured, and covered with long pale hair; the other

ventral segments more thickly covered with longer white hair. The legs black, thickly

‘covered with white hair; the calcaria and spines black. .

352. HYMENOPTERA.

Vn, Spherophthalma anthracia.

Nigra ; capite, pronoto metanotoque rufo-hirtis ; abdominis segmento 2° maculis 2 argenteis. 9.

Long. 9-12 millim.

Hab. Panama, Bugaba 800 to 1500 feet, San Feliz (Champion).

Head slightly narrower than the thorax, rounded in front, transverse behind; the

part behind the eyes equalling them in length; densely covered with golden

pubescence, the pubescence on the cheeks and behind the eyes silvery; the mandibles

entirely black. The antenne black, the flagellum brownish beneath; the scape

covered with long white hair; the third joint about one-quarter longer than the

fourth. The thorax not much narrowed towards the apex; black, the mesonotum

with black hair; the pleure covered with long silvery hair; the pronotum, the base

of the mesonotum, and two round marks on the median segment covered with long

golden hair; the apex of the metapleure reticulated. The abdomen a little longer

than the head and' thorax united, wider than the thorax, black, covered with black

pubescence; the basal segment dilated towards the apex, covered with long white hair,

the apex bordered with white pubescence; near the base of the second segment are

_ two round marks of white pubescence; the apex of the second segment, except in the

middle, the third, except in the centre, and the sides of the fourth and fifth segments

(the latter only very narrowly) covered with silvery pubescence. The pygidium

obscurely striolate, margined with long black hair. The basal ventral segment ferru-

ginous at the base, covered with long white hair; the keel blunt, gradually raised to

the apex, which is rounded at the top and obliquely truncated; the second ventral

segment is strongly punctured, sparsely covered with long white hair; the other

ventral segments hid by a pale silvery pubescence. The legs are black and covered

with long white hair; the spines and calcaria are black.

J 72. Spherophthalma hiera.

Long. 11 millim. 9.

Hab. Mexico, Paso del Macho (Hoge).

Very similar to S. anthracia, but with the median segment (instead of having two

golden marks) covered all over with golden pubescence, and the two marks on the

second abdominal segment golden (not silvery), the marks much larger and not round.

The head is a little narrower than the thorax, rounded in front and behind, densely

covered with golden pubescence; the antennal tubercles and the base of the mandibles

ferruginous. The antennal scape curved, covered with long white hair; the flagellum

thick, the third and fourth joints subequal. The thorax black, narrowed towards the

apex; the pronotum, the sides of the mesonotum, and the median segment entirely,

covered with golden pubescence; the mesopleuree covered with white pubescence; the

metapleure coarsely reticulated. The abdomen as long as the head and thorax united,

SPH FROPHTHALMA., 353

black; the basal segment dilated towards the apex, covered with long white hair; on

the base of the second segment are two large marks, longer than broad and truncated

at the apex, of golden pubescence; the apex of the second segment, the third and the

fourth segments, and the sides of the fifth, covered with silvery pubescence. The

pygidium longitudinally striated; the sides bordered with long fuscous hair. The

basal ventral segment covered with long white hair; the keel stout, gradually raised

from the base to the apex, which is oblique and is rounded at the top; the second

ventral segment very strongly punctured and sparsely covered with white hair; the

other ventral segments densely covered with silvery pubescence and hair. The legs

black ; the tibial spines and the calcaria black.

v 73. Spherophthalma dictynna.

Nigra; capite, apice mesonoti metanotique maculis 2, abdominis apice segmentoque 2° argenteo-hirtis. @.

Long. 14 millim.

Hab. Panama, Bugaba 800 to 1500 feet (Champion).

The head as wide as the thorax, rounded in front and behind, densely covered with

pale silvery pubescence; the eyes much longer than the part of the head behind them ;

the mandibles entirely black, and covered with long silvery hair at the base. The

antenne stout; the scape covered with long silvery hair, the flagellum with a dense

pale pubescence ; the third joint about one-half longer than the fourth. The thorax is

more than twice the length of the head, narrowed from the middle towards the apex,

rounded in front, the apex with an obliquely rounded slope, black; the apex of the

mesonotum with a broad band of fulvous pubescence; the median segment with a

band of fulvous pubescence on either side ; the mesopleure densely covered with

silvery pubescence ; the metapleure shining, bare, the extreme apex coarsely punc-

tured. The abdomen not much longer than the head and thorax united, black; the

basal segment covered with long pale hair, and at the apex densely fringed with silvery

pubescence; the second segment with two round pale yellow spots at the base and two

larger ones towards the apex, the sides at the apex clothed with silvery pubescence,

which is also the case with the sides of the third segment; the fourth and fifth

segments covered with silvery pubescence. The pygidium longitudinally striated,

fringed at the base and at the sides with long fulvous hair. The second ventral

segment with the keel not extending to the middle of the segment, its apex straight ;

the second ventral segment has widely separated punctures and is very sparsely covered

with long white hair; the other ventral segments are densely covered with pale fulvous

pubescence and hairs. The legs are black, sparsely covered with white hair; the

tibial spines black, the calcaria white.

BIOL. CENTR.-AMER., Hymenopt., Vol. II., March 1899. 2 22

B04 . HYMENOPTERA.

V 74. Spherophthalma sicheliana.

Mutilla sicheliana, Saussure, Ann. Soc. Ent. Fr. 1867, p. 360, t.8. fig. 10*; Blake, Trans. Am, Ent.

Soe. iii. p. 257 *.

Spherophthalma sicheliana, Blake, Trans. Am. Ent. Soc. xii. p. 217°.

Hab. North America, Arizona®. — Mexico? 3, Northern Sonora (Morrison),

Tehuacan, Eastern Cordillera (Saussure 1), Jalisco, San Blas (Schumann), Chilpancingo

in Guerrero (H. H. Smith). .

This species varies from 10 to 14 millim. in length. In all the specimens I have

seen the black on the mesonotum is much more extended than in Saussure’s figure ;

in fact, in all of them the entire mesonotum is black. The second abdominal segment

varies in the amount of black on it, as does also the amount of black on the legs.

The third antennal joint is not much longer than the fourth. The keel on the basal

ventral segment is very distinct, and is rounded at the base, oblique at the apex, and

slightly incised in the middle. The hair on the head and thorax varies from very pale

fulvous to deep ochraceous.

J 75. Spherophthalma philinna,

Long. 12 millim.

Hab. Mexico, Venta de Zopilote in Guerrero 2800 feet (H. H. Smith).

Head densely covered with white pubescence; subquadrate, rounded in front,

transverse behind ; the part behind the eyes almost double their width; the antennal

tubercles and the base of the mandibles ferruginous. The antenne ferruginous; the

scape curved, covered with long white hair; the third joint twice the length of the

fourth. The thorax not much longer than the head, rounded in front, gradually

narrowed from the middle to the apex, the apex with an oblique slope, ferruginous;

the apex of the mesonotum with a broad curved band of white pubescence, the front

part covered with very long black hair; the pleure covered with long white hair; the

metapleure reticulated. The abdomen as long as the head and thorax united; dark

ferruginous above, the sides and the ventral surface much lighter in colour; covered

with long black hair; the basal segment gradually dilated to the apex, covered with

long white hair; the second segment with a broad band of white pubescence, which,

in the middle, is triangularly extended backwards, reaching near to the base of the

segment; the fourth and fifth segments covered densely with long white pubescence.

The pygidium coriaceous, fringed laterally with long fuscous hair. The basal ventral

segment coarsely punctured, the keel distinct, long, the base slightly, the apex

abruptly oblique; the second ventral segment strongly punctured; the segments 3-5

densely covered with white pubescence; the sixth segment black. The legs ferru-

ginous, covered with long white hair; the tibial spines and the calcaria black.

SPH ZEROPHTHALMA. 350

This species agrees generally in coloration with S. sicheliana, but may be easily known

from it by the longer head and shorter thorax; the third antennal joint nearly twice

the length of the fourth (in 8. stcheliana it is not much more than one-half longer),

the slope of the median segment more abrupt, and the second segment of the abdomen

without two small patches of yellow pubescence, its apex broadly covered with white

pubescence, which extends triangularly beyond the middle.

V 76. Spherophthalma temaxensis.

Nigra; capite, pronoto, maculis 2 metanoti, abdominis basi segmento 2° maculis 2, segmentisque 3°-6™

argenteo-pilosis, 2.

Long. 11 miJlim.

Hab. Mexico, Temax in North Yucatan (Gaumer).

Head subquadrate, almost transverse in front, rounded behind, densely covered with

pale ochraceous pubescence, the antennal tubercles and the base of the mandibles

reddish. The antenne black; the scape with long white glistening hair; the third

joint hardly one-quarter longer than the fourth. The thorax twice the length of the

head, the base almost transverse, the apex with a semioblique slope ; from the middle

it becomes gradually narrowed to the apex. The sides of the mesonotum are very

strongly punctured; the base has a band of pale fulvous hair; on the apex are two

elongated marks (narrowed towards the apex) of pale pubescence. The mesopleure

are covered with long white hair; the metapleure with large deep round punctures.

The abdomen is black, longer than the head and thorax united, and is sharply narrowed

from the middle to the apex; the basal segment becomes wider towards the apex, is

coarsely punctured, and bears long white hair, the extreme apex having a band of pale

fulvous pubescence ; the second segment has two roundish marks of white pubescence

at the base, the apex being banded with white pubescence, except in the middle; the

segments 3-6 are densely covered with white pubescence, except in the centre. The

pygidium is finely longitudinally striolate, and fringed laterally with long fuscous hair ;

the apex is not incised. The basal ventral segment has a not very distinct keel; the

second ventral segment bears scattered punctures, and is sparsely covered with white

_hair; the other ventral segments are densely covered with white hair ; the hypopygium

is rufous, bare, finely transversely striated. The legs are black and covered with white

hair; the spines and calcaria are black.

V 77. Spherophthalma schumanni.

| Nigra; capite, pronoto maculaque mesonoti argenteo-pilosis ; abdomine argenteo-piloso, maculis 3nigris. 9.

Long. 10 millim.

Hab. Mexico, Tepic (Schumann).

Head subquadrate, almost transverse before and behind; the part behind the eyes

scarcely equalling them in length; densely covered with pale fulvous pubescence ; the

222 2

856 _ HYMENOPTERA.

basal half of the mandibles ferruginous. The scape of the antenne ferruginous and

covered with long white hairs; the basal two joints of the flagellum ferruginous, its

second joint twice the length of the third. The thorax rounded at the base, the apex

with an oblique slope, the apical half sharply narrowed; black; the pronotum thickly

covered with pale fulvous hair; there is a spot of pale golden pubescence on the

middle of the mesonotum, the apex bearing long white hairs; the pleure are thickly

covered with pale hairs; the metapleure are coarsely reticulated. ‘The abdomen is

densely covered with pale fulvous pubescence; at the base is a large black mark,

which becomes gradually wider towards the apex, the base having a short neck; from

this mark a black line runs uniting it with a slightly smaller one which has the apex

dilated in the middle. The first segment is broader than long, hollowed in the centre ;

the sides and apex are coarsely punctured and bear long white hair; the apex is

more or less ferruginous. The pygidium is black, longitudinally striolated, the sides

bearing long black hairs; the apex is not incised. ‘The keel on the basal ventral

segment is large, truncated at the base and apex, and is present only on the middle

of the segment; the second ventral segment is coarsely punctured, and sparsely

covered with white hairs; the other ventral segments are densely haired. ‘The legs

reddish, covered with long white hair; the spines and calcaria reddish.

‘78. Spherophthalma pallene.

Nigra, argenteo-pilosa; thoracis basi apiceque nigris ; abdominis basi et apice nigris, apice segmento 2° late

nigro. @.

Long. 14 millim.

Hab. Mexico, Ventanas in Durango 2000 feet (forrer).

In general coloration this insect approaches S. sumichrasti; but it differs from the

female of that species in having the base and apex of the thorax above broadly

black, the basal segment of the abdomen black and not densely covered with pale

pubescence, and the second black mark on the abdomen divided in the middle, while

the occiput is slightly concave and not transverse as in S. swmichrastt.

The head subquadrate, rounded in front, slightly convex behind; densely covered

with pale fulvous pubescence, which hides the colour; the part behind the eyes not

quite equalling them in length; the base of the mandibles rufous. The antenne are

stout ; the scape covered with fulvous hair, the flagellum with a dull pile; the third

joint is twice the length of the fourth. The thorax with the base rounded, the apex

with an oblique slope and distinctly narrowed from the middle; covered with long

pale fulvous hair; the apex and base broadly black, and covered with black hair.

The abdomen is longer than the head and thorax united; the basal segment is black,

covered with long white huirs, and sparsely punctured ; the base of the second segment

is broadly black, the black roundly incised in the middle, the black bearing black hairs,

the rest of the segment densely covered with pale fulvous hair, and on the following

SPHAZROPHTHALMA. 357

segment are two large black marks. The pygidium is black, longitudinally striolate,

the sides fringed with fulvous hair; the apex incised. The basal ventral segment with

a short keel on the middle only; the other ventral segments densely covered with pale

fulvous hair. The legs are covered with hair; the tibial spines long and black.

V79. Spherophthalma ephippiata. .

Nigra; capite, thorace basi et apice, metanoto, abdominis apice maculisque 2 segmento secundo argenteo-

pilosis. 9.

Long. 12 millim.

Hab. Mexico, North Yucatan (Gaumer).

Very similar to S. arachnoides, but with the mesonotum entirely black, the pleure

not densely covered with white hair, the apical abdominal segments entirely black, the

basal black mark on the abdomen not roundly incised in the middle at the apex, and

the keel on the basal ventral segment raised and separated from the basal part in

front.

Head narrower than the thorax, almost transverse behind, with the sides broadly

rounded, densely covered with pale fulvous pubescence, which hides the colour; the

oral region and the mandibles black, the base of the latter reddish ; the part of the

head behind the eye equalling them in length. The antenne are dull rufous; the

scape bears long white glistening hairs; the third joint is not much longer than the

fourth. The thorax is almost transverse at the base; the apex has a semiperpendicular

slope ; from the tubercle it becomes gradually (but not much) narrowed towards the

apex. ‘The prothorax has a dense covering of long white hairs; the mesonotum is

entirely black, and is sparsely covered with long black hairs; the median segment is

densely covered with a white pubescence, which hides the sculpture. The mesopleure

are sparsely, the base of the metapleure more densely covered with white hair, the

apical half of the metapleuree without any pubescenee and bearing large deep round

punctures. The abdomen is as long as the head and thorax united, and is wider than

the thorax ; the basal segment is sparsely covered with long white hair, the apex with

a dense band of white pubescence, covered with large deep roundish punctures; the

second segment is black, except for a narrow band at the apex and two marks of white

pubescence on the sides at the base, the black central part having the sides straight ;

the third segment is covered with white pubescence; the other segments are entirely

black. The pygidium is longitudinally striolate and fringed laterally with stiff dull

The basal ventral segment is more or less rufous and rather strongly

punctured ; the keel is stout, rounded on the top; the base sharply, the apex only

slightly oblique. ‘The second ventral segment strongly punctured, sparsely covered

with long white hair; the other segments are entirely covered with white hair, Legs

black, covered with long white hair, the tips of the tarsi rufous; the tibial spines

long and black, the tarsal spines rufous; the calcaria black.

fulvous hair.

358 - HYMENOPTERA.

V 80. Spherophthalma araneoides. _ ,

Mutilla’ araneoides, Smith, Trans. Ent. Soc. Lond. 3rd ser. i. p. 35 (1862) *; Gerst. Arch. f.

Naturg. xl. p. 68”.

Hab. Costa Rica ?; Panama (Stretch 1).

Mr. C. O. Waterhouse has been good enough to examine for me the type of this species,

_ and he finds it to be a Sphewrophthalma, with narrow basal segment to the abdomen.

/ e

V 81. Spherophthalma waterhousei. : ,

Mutilla araneoides, Smith, Descr. of New Species of Hymen. p. 223 (1879) (nec Smith, 1862) ‘

Spherophthalma araneoides, Blake, Trans. Am. Ent. Soc. xiii. p. 256°.

Hab. Nicaracva, San Juan del Sur ! 2.

This insect may prove to be inseparable from the preceding; but Mr. Waterhouse

informs me that the second araneoides differs from the first (from Panama) in being

a trifle narrower, especially at the widest part of the abdomen, and it also has the two

spots on the posterior part of the thorax white, whereas the Panama specimen has

these spots fulvous, 7. e. of the same colour as the anterior spot.

V 82. Spherophthalma thera.

Long. 15 millim.

Hab. Mexico, Milpas in Durango 5900 feet (Forrer).

Head subquadrate, nearly as wide as the thorax; broadly rounded in. front, trans-

verse behind; the part behind the eyes nearly equalling them in length; densely

covered all over with long fulvous hair; the mandibles black, ferruginous at the base.

The antenne short, thick, the basal joints brownish beneath ; the scape long, thick,

bearing pale fulvous hair; the third joint nearly one-half longer than the fourth.

The thorax nearly twice the length of the head, black ; the base and the apex densely

covered with long fulvous hair; the central part has the hair black; the mesopleure

densely covered with long pale fulvous hair; the metapleure coarsely reticulated.

The median segment with a sharply oblique slope. The abdomen is distinctly longer

than the head and thorax united, and wider than them. The basal segment is wider

than long, becoming wider towards the apex; it is coarsely punctured, black, and

covered with long fulvous hair. The second segment is coarsely punctured, ferruginous ;

on the middle is a large trilobate black mark, as in S. arachnoides; on either side of

the basal lobe is a roundish fulvous mark; the extreme apex of the segment is

bordered with fulvous pubescence. The third segment is entirely covered with

fulvous pubescence. The fourth and fifth segments are black, with fulvous pubescence

at the sides. The pygidium is black, longitudinally striated, the sides with long black

hair. The basal ventral segment is black, and covered with long pale fulvous hair,

the keel blunt ; the second ventral segment is ferruginous, punctured rather strongly,

and covered thickly with long pale fulvous hair ; the other ventral segments are densely

SPH ZEROPHTHALMA. 359

covered with fulvous pubescence. The legs are ferruginous, the knees and tarsi

darker; the tibial spines and the calcaria are black.

This species bears a general resemblance to S. arachnoides, but it is larger; the

colour of the pubescence all over the body is fulvous (not white); the second

abdominal segment is ferruginous, and while the form of the black mark is the same,

it has also on either side two fulvous marks ; and the legs are reddish, not black.

83. Spherophthalma arachnoides.

Mutilla arachnoides, Smith, Cat. Hymen. Ins. iii. p.57!; Blake, Trans. Am. Ent. Soc. ili, p. 244, fig.”

Spherophthalma arachnoides, Blake, op. cit. xiii. p. 236, fig.’

Hab. Mexico! 2%, Cordova (Hége), San Blas in Jalisco (Schumann), Venta de

Zopilote and Rincon in Guerrero (H. H. Smith).

The pubescence is described by Smith and Blake as ochraceous, and that is the case

with most of the examples I have seen; but in the two specimens from Venta de

Zopilote the pubescence is white, without a trace of ochraceous, and these examples

further appear to have the thorax more narrowed towards the apex. The antenne

may have the flagellum brownish beneath. In size the species varies considerably.

¥g4. Spherophthalma sumichrasti.

Mutilla sumichrasti, Saussure, Ann. Soc. Ent, Fr. 1867, p. 357, t. 8. figg. 7,8 (2 & 3)*; Blake,

Trans. Am. Ent. Soc. ii. p. 236, fig. *

Spherophthalma sumichrasti, Blake, op. cit. xiii. p. 222, fig.

Hab. Mexico 2? (Sumichrast !), Ventanas in Durango 2000 feet (Morrer), Dos Arroyos

in Guerrero 1000 feet (H. H. Smith), Oaxaca (Hoge).

This species varies in size from 12-14 millim. The black mark on the second

abdominal segment as figured by Blake differs from that of any specimen I have seen,

as well as from Saussure’s figure. The latter, too, figures the second black mark as

incised at the base; but in all our examples it is transverse at the base. The third

antennal joint is at least twice the length of the fourth.

ss, Spherophthalma prunotincta.

Spherophthalma prunotincta, Cocker. Ent. News, vi. p. 60 (Febr. 1895).

Hab. Mexico, Guanajuato (Dugeés).

v 86. Spherophthalma gloriosa.

Mutilla gloriosa, Saussure, Ann. Soc. Ent. Fr. 1867, p. 359, t. 8. fig. 9°.

Spherophthalma gloriosa, Fox, Proc. Calif. Acad. Sci. iv. p. —’.

Hab. Norta America, Cape San Lucas in Lower California ! 2.—Mexico, Villa

Lerdo i in Durango (Hoge).

This species may be easily known by the entire body being covered with very long moss-

like hair, which completely hides the colour (except in parts where it is reddish) and

360 . HYMENOPTERA.

sculpture. The head is a little narrower than the thorax, rounded in front and behind ;

behind the eyes it is developed less than their length. ‘The form of the keel on: the

basal ventral segment cannot be made out, it being covered with hair. In our only —

specimen the pygidium is not covered with hair, is rough in texture, and fiery-red.

/ 87. Spherophthalma melissa.

Long. 12 millim.

Hab. Nicaragua, Chontales (Janson); Panama, Bugaba, Volcan de Chiriqui

(Champion).

The head, with the eyes, as wide as the thorax, rounded in front and behind ; the

part behind the eyes not one-half their length; black, the front and vertex densely

the middle. The antenne short, black; the scape with fuscous hairs; the flagellum

brownish in the middle beneath, the third and fourth joints subequal. The thorax

elongate, narrow, more than twice the length of the head, black; from before the

middle a broad band of silvery pubescence runs to the apex; coarsely punctured, —

covered with short black hair; the sides at the base tuberculate; the mesopleure

densely covered with silvery pubescence ; the metapleure coarsely punctured ; the apex

of the thorax has a long obliquely rounded slope. The abdomen is not quite so long

as the thorax and is wider than it. The basal segment is longer than broad and is

hardly dilated towards the apex; the base is depressed; coarsely punctured and

sparsely covered with silvery hair. The second segment is punctured, sparsely covered

with short pale hairs; touching the extreme base are two yellow round marks, and

towards the apex are two larger yellow marks, which are broader than long. The

fourth and fifth segments are densely covered with silvery pubescence. The pygidium

is obscurely striated in the middle; the sides densely covered with long silvery hair. .

The basal ventral segment has a broad and slightly curved keel, the part between its

base and the basal part of the segment forming an incision ; the second ventral segment

has widely separated punctures and is sparsely covered with long white hair, its apex,

as well as that of the other segments, being covered with silvery pubescence. The

legs, especially the tarsi, covered with silvery hair; the calcaria and spines black.

V 88. Spherophthalma icaris.

Long. 16 millim.

Hab. Nicaragua, Chontales (Janson).

Of similar form to S. melissa, but with the four marks on the second abdominal

segment reddish-orange (not pale yellow), the basal segment densely covered with

silvery pubescence, and the pubescence on the apical segments golden (not silvery) ;

the head is.longer behind the eyes; on the sides of the mesonotum at the base are two

SPH EROPHTHALMA. 361 |

distinct tubercles; the ‘space between the keel on the basal ventral segment and the

base of the segment does not form an incision. |

The head, with the eyes, as wide as the thorax, rounded in front and behind, the

front and vertex densely covered with silvery pubescence; the part behind the eyes

fully one-half their length; the mandibles entirely black. The scape of the anfenne

. black, short, very sparsely pilose; the flagellum on the underside reddish, covered with

a white microscopic pile ; the third joint hardly one-quarter longer than the fourth.

The thorax more- than twice the length of the head, elongate, gradually narrowed

towards the apex, very coarsely punctured, sparsely covered with silvery and black

hair; from the middle above a broad band of silvery pubescence runs to the apex;

the base is transverse, the sides oblique, with a distinct tubercle at the base and apex,

'and.a smaller tubercle in the middle; the apex has a long, gradually rounded

slope; the mesopleure thickly covered with silvery hair; the metapleure coarsely

reticulated. The basal segment of the abdomen is longer than broad, not much

widened towards the apex; the base oblique, not hollowed; punctured, thickly covered

with silvery pubescence. The second segment is black, covered with silvery hair; the

apex fringed with golden pubescence; at the base are two roundish orange-yellow

marks, and at the apex are two larger marks, which are wider than long. The third,

fourth, and fifth segments are densely fringed with golden pubescence. The pygidium

is punctured, the sides densely covered with long golden hair. The keel on the basal

ventral segment is stout, oblique at the base and apex; the base above is.a little

depressed in the middle, the rest very distinctly curved. ‘The second ventral segment

has widely separated punctures, and is sparsely covered with white hair; the apex

fringed with golden pubescence. The ‘other ventral segments are fringed with golden

pubescence. The legs black; the femora and tibie sparsely, the tarsi thickly, covered

with silvery pubescence.

89. Spherophthalma ocyroe.

Nigra ; capite, thoracis apice late, abdominis apice maculisque 2 segmento secundo argenteo-pilosis. 2.

Long. 8 millim. ;

Hab. Mexico, Rio Papagaio in Guerrero (H. H. Smith).

The head a little wider than the thorax, subquadrate in front, completely transverse

behind, the sides behind acute, not rounded; apparently black, but the colour hid by

dense golden pubescence ; the part behind the eyes nearly equalling them in length;

the antennal tubercles and the base of the mandibles broadly ferruginous. The

antenne ferruginous, blackish towards the apex; the scape long, thin, curved, sparsely

covered with silvery hair; the third joint hardly one-quarter longer than the fourth.

‘The thorax short, not much longer than the head, rather sharply narrowed from the

middle to the apex, black; from the middle to the apex thickly covered with golden

pubescence ; the base rounded, the apex with a rather sharply oblique slope. The

BIOL. CENTR.-AMER., Hymenopt., Vol. II., July 18985. 3 AA

369 . HYMENOPTERA.

pleure are for the greater part ferruginous; the middle thickly covered with silvery

hair; the metapleure black, reticulated. The abdomen shorter than the head and

thorax united and broader than-the thorax. The basal segment black above, ferru-

ginous at the sides, coarsely punctured ; covered with long white hair, the apex thickly

covered with a band of pale golden pubescence; the segment becomes distinctly

dilated towards the apex. The second segment is deep black above; towards the

middle are two large marks of silvery pubescence, which extend to the sides and are

narrowed on the inner side. The third, fourth, and fifth segments are thickly covered

with bright silvery pubescence. The pygidium is finely punctured, the sides covered

with long pale hair. The basal ventral segment is red; the keel darker at the top,

its base and apex bluntly oblique; the other ventral segments are also ferruginous ;

the second segment is strongly punctured and sparsely haired, the other segments

thickly covered with long pale fulvous hair. The legs ferruginous, covered with pale

fulvous hair; the tibial spines long and black; the calcaria white; the tips of the

tarsal joints blackish.

The following species agree in form and coloration with the group of S. sumichrasti

&c.; but it wants the black marks on the fore part of the thorax and on the abdomen,

the base only of which is black; the metathorax being also black. Iam not sure

about the colour of the hair, which may be discoloured.

90. Spherophthalma connectens.

Pallide ochracea, longe hirta ; metanoto, abdominis basi pedibusque nigris. ¢.

Hab. Mexico, Pinos Altos in Chihuahua (Buchan-Hepburn).

The antenne black, sparsely covered with a pale pubescence ; the third joint about

one-quarter longer than the fourth. The head coarsely punctured, the upper part

densely covered with long pale ochraceous hairs, the lower part has some silvery hairs

mixed with the others, and the front has an obscure rufous tinge. The thorax is

twice the length of the head, and is narrowed very perceptibly beyond the middle.

The pleure in front have griseous hairs; behind, the hairs are black. The median

segment is covered with long:stiff black hairs, and is coarsely reticulated ; the pleure,

except behind the mesopleure, being coarsely punctured, the punctures large, deep,

and round. ‘he abdomen is as long as the head and thorax united; the petiole is, if

anything, broader than long, covered with large deep round punctures, and with long

black hairs; the base of the second segment is covered with black hairs, and is punc-

tured; the rest of the abdomen more thickly clothed with pale fulvous hair, which is

also more depressed. ‘The pygidial area is black, bare, and rather. deeply longitudinally

striolated. The second ventral segment is coarsely punctured, and somewhat sparsely

SPHZROPHTHALMA. 363

covered with stiff black hairs; the rest of the ventral surface is thickly covered with

depressed pale ochreous hairs, which completely hide the sculpture. The coxe and

femora are covered with long, soft, pale hairs ; the tarsal hairs are stiffer and black.

The following are the females of this section unknown to me:—

91. Spherophthalma canina.

Mutilla canina, Smith, Cat. Hymen. iii. p. 58°.

Spherophthalma canina, Blake, Trans. Am. Ent. Soe. xiii. p. 215’.

Hab. Mexico } 2,

92. Spherophthalma combusta.

Mutilla combusta, Smith, Cat. Hymen. iii. p. 59°.

Spherophthalma combusta, Blake, Trans. Am. Ent. Soc. xiii. p. 216’.

Hab. Mexico ?! 2,

93. Spherophthalma vestita.

Mutilla vestita, Lepel. de St.-Farg. Nat. Hist. Ins., Hymén. iii. p. 634’.

Spherophthalma vestita, Blake, Trans. Am. Ent. Soe. xiii. p. 2187.

Hab. Mexico 1} 2,

94. Spherophthalma verticalis.

Mutilla verticalis, Smith, Cat. Hymen. Ins. ili. p. 63°.

Spherophthalma verticalis, Blake, Trans. Am. Ent. Soc. xiii. p. 2217.

Hab. Mexico ! 2.

95. Spherophthalma pulchra.

Mutilla pulchra, Smith, Cat. Hymen. Ins. iii. p. 62°.

Spherophthalma pulchra, Blake, Trans. Am. Ent. Soc. xiii. p. 222”.

Hab. Mexico ! 2.

96. Spherophthalma antiguensis.

Mutilla antiguensis, Fabr. Ent. Syst. ii. p. 3671; Syst. Piez. p. 429”.

Spherophthalma antiguensis, Blake, Trans. Am. Ent. Soc. xiii. p. 221 (9, 3)*.

Hab. Mexico *.—Antiuuts, Antigua ! 2°,

97. Spherophthalma klugi.

Mutilla klugii, Gray, in Griffith’s Anim. Kingd., Ins. i. p. 516, t. 71. fig. 2°; Lepel. de St.-Farg,

Nat. Hist. Ins., Hymén. iu. p. 5967.

Hab. * Mexico.—Soura America !,

I introduce this species on the authority of a MS. note of the late Mr. F. Smith, in

which he gives “‘ Mexico” as a habitat.

3 AA 2

364 HYMENOPTERA.

98. Spherophthalma hecate. _

Mutilla hecate, Gerst. Archiv f. Naturg. xl. p. 577.

Hab. Costa Rica (Mus. Berol. 1).

99. Spherophthalma microphthalma.

Mutilla microphthalma, Gerst. Archiv f. Naturg. xl. p. 64°.

Hab. Mexico (Mus. Berol.).

100. Sphzrophthalma cardinalis.

Mutilla cardinalis, Gerst. Archiv f. Naturg. xl. p. 647.

Hab. Mexico (Mus. Berol. 1).

101. Sphzrophthalma satrapa.

Mutiila sutrapa, Gerst. Archiv f. Naturg. xl. p. 657.

Hab. Mexico (Mus. Berol. +).

102. Spherophthalma montezume.

Mutilla montezume, Lepel. de St.-Farg. Hist. Nat. Ins., Hymén. i. p. 634’.

Spherophthalma montezume, Blake, Trans. Am. Ent. Soc. xiti. p. 232%.

Hab. Mexico 12,

103. Spherophthalma melanosoma.

Mutilla melanosoma, Blake, Trans. Am. Ent. Soc. iii. p. 240°.

Spherophthalma melanosoma, Blake, op. cit. xiii. p. 233.

Hab. Panama! 2,

104. Spherophthalma proserpina.

Spherophthalma proserpina, Blake, Trans. Am. Ent. Soc. xiii. p. 2837.

Hab. Honnvvras 1.

105. Spherophthalma cressoni,

Spherophthalma cressoni, Blake, Trans. Am. Ent. Soc. xiii. p. 234, fig. (2).

fab. Mexico}.

106. Spherophthalma nortoni.

Spherophthalma nortoni, Blake, Trans. Am. Ent. Soc. xiii. p. 284, fig. (2)?.

Hab. Mexico},

107. Sphzrophthalma toluca.

Spherophthalma toluca, Blake, Trans. Am. Ent. Soc. xiii. p. 285, fig. (?)’.

Hab. Mexico (Sumichrast 1).

SPH ZROPHTHALMA.

108. Spherophthalma ariadne.

Spherophthalma ariadne, Blake, Trans. Am. Ent. Soc. xiii. p. 235, fig. ( 2)’.

Hab. Mexico (Sumichrast 1).

109. Spherophthalma formosa.

Spherophthalma formosa, Blake, Trans. Am. Ent. Soc. xili. p. 236, fig. ( 9)’.

Hab. Mexico (Sumichrast 1).

110. Spherophthalma solola.

Spherophthalma solola, Blake, Trans. Am. Ent. Soc. xiii. p. 236°.

Hab. Guatemara (Sumichrast 1).

111. Spherophthalma, batopilas.

Spherophihalma balopilas, Blake, Trans. Am. Ent. Soc. xiii. p. 188°.

Spherophihalma balopilus, Blake, loc. cit. p. 237? *.

Hab. Mexico (Sumichrast 2),

112. Spherophthalma altamira.

Spherophthalma altamira, Blake, Trans. Am. Ent. Soc. xiii. p. 237°.

Hab. Mexico (Sumichrast 1).

118. Spherophthalma xalisco.

Spherophthalma xalisco, Blake, Trans. Am. Ent. Soc. xiii. p. 287, fig. (¢)'.

Hab. Mexico (Sumichrast +).

114. Spherophthalma megacantha.

Spherophthalma megacantha, Cocker. & Casad, Ent. News, v. p. 294 (Nov. 1894) ’.

Hab. Mexico, Guanajuato (Dugés ').

115. Spherophthalma dugesi.

Spherophthalma dugesii, Cocker. & Casad, Ent. News, v. p. 294".

Hab. Mexico, Guanajuato (Dugés').

Appears to be nearly related to S. sumichrasti.

The following are the undescribed males of this section :—

116. Spherophthalma personata.

Nigra; abdomine ferrugineo, basi nigro ; capite et thorace longe albo-hirtis ; alis fusco-violaceis. ¢.

Long. 9 millim.

Hab. Mexico, Jalisco (Schumann).

* The specific names used by Blake are probably intended for ‘‘ Batopilas,” a place in Chihuahua.

365

366. HYMENOPTERA.

The head not much narrower than the thorax, rounded in front, transverse behind,

thickly covered with long griseous hair; the antennal tubercles and the mandibles

black; the space behind the eyes not half their diameter. The antenne black, the

scape bearing long white hair; the third joint distinctly shorter than the fourth. The

prothorax covered with long griseous hair; the mesonotum covered with shorter black

hair; the scutellum and median segment thickly covered with long griseous hair, the

groove at the base of the former deep; the median segment has an abruptly rounded

slope and is coarsely reticulated. ‘The mesopleure are coarsely reticulated, except at

the apex; the metapleure still more strongly reticulated. The abdomen is longer

than the head and thorax united; the petiole is entirely black, coarsely punctured,

covered with long white hair; the other segments are much less strongly punctured,

ferruginous, covered with long ferruginous hairs; the apical segment is ferruginous,

except the extreme apex, which is black, its hair is long, soft, and pale. The ventral

segments bear long white hair. The legs are black, and afte covered with long white

hair. The radial cellule is a little shorter than the first cubital, and does not reach to

the apex of the third cubital ; the apical abscissa of the radius is a little oblique. The

apical part of the wing is darker than the rest.

117. Spherophthalma yucatana.

Nigra; abdominis segmento 2° late auranteo; capite, thorace abdominisque apice albo-hirtis; alis fusco-

violaceis. <.

Long. 13 millim.

Hab. Mexico, North Yucatan (Gawmer).

- Head narrower than the thorax, a little rounded in front and behind, densely covered

all over with silvery pubescence ; the part behind the eyes hardly half their length ;

the antennal tubercles rufous; the mandibles black. The antenne shorter than the

head and thorax united, stout, black; the scape covered with silvery hair; the third

joint shorter than the fourth. The thorax is more than twice the length of the head,

and is sharply narrowed behind the points of insertion of the wings. ‘The pronotum

is finely and closely punctured, and is densely covered with dull silvery pubescence.

The mesonotum is coarsely punctured and covered with longish depressed hair ; at its.

apex laterally it projects into stout, somewhat triangular teeth, the outer sides of which

are curved. ‘The scutellym is densely covered with silvery pubescence. The median

segment lias an abruptly rounded slope ; it is strongly reticulated, and the basal half

is covered with silvery pubescence. The pleure are covered with silvery hair; the

mesopleure are finely punctured; the apex of the metapleure is reticulated. The

abdomen is longer than the head and thorax united, and a little longer than the

latter ; it is black, except a broad orange band, contracted in the middle, in the centre

of the second segment ; the petiole is coarsely punctured, the base oblique, the hair

lad

SPH ZROPHTHALMA. 36%

long, pale at the base, blackish at the apex; the second segment is coarsely punctured

on the black base and apex, where the hair is black; on the orange band the hair is

pale ; the third and fourth segments are covered with long black hair, the fifth and

sixth densely clothed with silvery pubescence all over. The ventral surface is black,

except the base of the fourth segment, which is pale yellow; the apices of all the

segments are fringed with long silvery hair; the second segment with large punctures ;

the basal segment strongly punctured laterally, its base and apex oblique, the keel a

little depressed in the middle, not raised at the base or apex. The wings are fusco-

violaceous, clear at the base and in the middle; the radial cellule short and broad,

about as long as the first cubital cellule; the basal abscissa of the radius oblique, the

apical abscissa a little curved; at the bottom the first cubital cellule is as long as the

second; the first transverse cubital nervure is curved, the second elbowed in the

middle; at the top the second cubital cellule is a little longer than the space bounded

by the first transverse cubital and the first recurrent nervures ; the latter is received in.

the basal fourth of the cellule; the third cubital cellule reaches near to the apex of

the radial; the lower part of, the third transverse cubital nervure is indistinct, and

reaches near to the second.

118. Spherophthalma relata.

Nigra; capite, thorace abdominisque apice albo-pilosis ; abdominis segmento 2° maculis 2 aurantiis; alis fusco-

violaceis. <.

Long. 12 millim.

Hab. Mexico, North Yucatan (Gaumer).

The head distinctly narrower than the thorax, a little rounded in front and behind ;

covered all over with a dense dull silvery pubescence; the part behind the eyes not

haif their length ; the antennal tubercles rufous; the mandibles black and bearing

rather long black hair. The antenne not much longer than the thorax, black; the

scape covered with longish silvery hair; the flagellum with a fuscous down; the third

joint a little shorter than the fourth. ‘The thorax is more than twice the length of

the head, and half the length of the abdomen; it is a little contracted behind the

points of insertion of the wings; black, the pronotum and the scutellum densely

covered with dull silvery pubescence ; the mesonotum is very coarsely punctured, and

covered with stiff black hairs; the depression at the base of the scutellum is wide and

deep, and the middle of the scutellum projects into it as a shining, bare, triangular —

tooth. ‘The median segment has a sharply rounded slope and is coarsely reticulated ;

the base is covered with a depressed silvery pubescence; and in the middle is an elon-

gated shagreened area, rounded at the apex. The pro- and mesopleure bear large,

round, widely separated punctures, and are sparsely covered with pale hair; the meta-

pleure are coarsely reticulated, and bear long pale hairs. ‘The abdomen is black,

except for two large pale orange-yellow macule on the apex of the second segment ;

368 HYMENOPTERA.

the basal segment is longer than wide, and is of equal breadth throughout, its base is

oblique, the segment bearing large deep punctures, and sparsely covered with long

black hairs; the second segment is moderately strongly punctured, and bears longish,

depressed, stiff black hairs; the third and fourth segments are punctured, and covered

with long black hair; the fifth segment is densely covered with silvery pubescence ;

the pygidium is covered with long black hairs, its middle being indistinctly carinate.

The ventral surface is entirely black ; the keel on the basal segment is distinct, and

projects at the base into a blunt triangle ; the second segment is moderately strongly

punctured, and is sparsely covered with pale hairs; the other segments are much more

finely punctured, and more densely covered with longer pale hairs ; the hypopygium

is more strongly punctured, and is sparsely covered with black hairs, its base is

depressed and oblique, the middle bluntly keeled, the keel becoming narrower and

more distinct towards the apex. The legs are black, and are covered with silvery

pubescence ; the calcaria are black. The wings are fusco-violaceous throughout ; the

radial cellule is elongate, but does not reach the apex of the third cubital cellule; the

first abscissa of the radius is sharply oblique, the apical abscissa straight or nearly so ;

the first cubital cellule is shorter than the radial; the second cubital cellule is much

longer than the first, but not longer than the radial; the third cubital cellule is

distinct, and is much narrowed at the bottom, where it is hardly half the length of the

top of the second cellule; at the top the latter is as long as the space bounded by the

first transverse cubital and the first recurrent nervures ; the first recurrent nervure is

received shortly beyond the basal third of the cellule; the second recurrent nervure is

interstitial. The tegule are large, longer than wide, and bear large deep punctures.

Characteristic of this species is the tooth on the base of the scutellum.

119. Spherophthalma perfidiosa.

Nigra ; abdominis basi late rufo; capite et thorace longe albo-hirtis; alis fumatis. ¢.

Long. 11-13 millim.

Hab. Mexico, Tepetlapa in Guerrero 3000 feet (H. H. Smith), San Blas (Schumann).

The head nearly as wide as the thorax, slightly rounded in front and behind, punc-

tured, densely covered all over with long dull griseous hair; the space behind the eyes

hardly one-halt their length; the antennal tubercles and the mandibles black, the

latter bearing long white hair. ‘The antenne shorter than the head and thorax united,

stout, black ; the scape covered with long pale hair; the third joint a little longer than

the fourth. The thorax is more than twice the length of.the head, not much narrowed

behind ; the pronotum densely covered with a silvery pubescence and with long silvery

hair; the mesonotum coarsely punctured and covered with long fuscous hair; the

scutellum covered with long silvery hair; the median segment with a rounded slope

and reticulated, the base with a dense, short, pale fulvous pubescence, the rest of the

SPH ZEROPHTHALMA, 369

segment having long silvery hairs; the mesopleure rather strongly punctured and

covered with pale pubescence; the metapleure strongly and deeply reticulated. ‘The

abdomen is dull ferruginous, blackish towards the apex; the petiole longer than

broad, dilated towards the apex, strongly punctured, and covered with long silvery

hair; the second segment is also punctured, and has the basal half covered with

silvery, and the apical half with blackish hair, the extreme apex fringed with long

pale golden hair, this being also the case with the third segment; the fourth

and fifth segments are covered with long black hair; the pygidium is strongly

punctured at the base, and bears long, pale, golden hairs. The ventral surface —

is coloured like the dorsal surface; the basal segment is strongly punctured, and the

keel is stout and has a slight gradual curve on the top; the second segment has widely

separated punctures, and bears rather long fuscous hair; the other segments at the

apex are fringed with long pale golden hair; the terminal segment is strongly punc-

tured. The legs are black and covered with pale silvery hair; the calcaria are white.

The wings smoky, darker towards the apex; the radial cellule does not reach to the

apex of the third cubital cellule; the first abscissa of the radius is oblique, the apical

one distinctly curved ; the first cubital cellule is hardly so long as the radial, and is

sharply lanceolate at the base; the first transverse cubital nervure is slightly and the

second more distinctly elbowed below the middle; at the top the second cubital cellule

is a little less than the space bounded by the first transverse cubital and the first

recurrent nervures, the latter is received a little beyond the basal third of the wings ;

the third transverse cubital nervure is distinct but faint throughout, this being likewise

the case with the second recurrent nervure, which is received in the middle of the

cellule.

The example from San Blas has the wings much darker and more violaceous in tint,

the base, too, not being lighter-coloured ; the first cubital shorter and not so sharply

lanceolate at the base; and the first recurrent nervure received nearer the middle of

the cellule. It is also smaller, but otherwise I cannot find any difference between it

and the Tepetlapa specimen, from which the description is taken.

120. Spherophthalma guerreroensis.

Long. 8 millim. ¢.

Hab. Mexico, Chilpancingo in Guerrero 4600 feet (H. H. Smith).

Except that the petiole is entirely black, this species agrees in coloration with

S. perfidicsa; but it is 3 millim. less in length, the pubescence on the head is much

less dense, and it is more strongly and more distinctly punctured; and the third

transverse cubital and the second recurrent nervures are obliterated entirely.

Head as wide as the thorax, transverse in front, rounded behind ; black, coarsely

punctured, covered sparsely with a dull silvery pubescence and with rather long fuscous

BIOL, CENTR.-AMER., Hymenopt., Vol. II., October 1895. 3 BB

370. . HYMENOPTERA,

hairs; the antennal tubercles and the mandibles black; the portion of the head

behind. the eyes fully half their length. The antenne black; the scape punctured

and sparsely covered with silvery hairs; the flagellum with a fuscous down; the third

joint distinctly shorter than the fourth. ‘The thorax is more than twice the length of

the head; the pronotum covered with dull silvery pubescence, but not so thickly as to

hide the punctures; the mesonotum coarsely punctured, covered with long black hairs ;

the scutellum coarsely punctured, sparsely covered with long black hairs; the median

segment with a gradually rounded slope, reticulated, covered with very long fuscous hair.

The pro- and mesopleure are coarsely punctured and covered with long white hair; the

apex of the median segment coarsely reticulated and bearing some long white hair.

The petiole becomes gradually dilated to the apex ; black, very coarsely punctured, and

covered with long white hairs. ‘The second abdominal segment moderately strongly

punctured and covered with black hairs; its apex and the apex of the third segment

fringed with long pale golden hair; the fourth and following segments entirely black ;

the fourth segment coarsely punctured and bearing laterally long black hair; the

pygidium punctured, and fringed at the sides with long fuscous hair.

121. Spherophthalma aspasia.

Longe fulvo-hirta; antennis, capite, corpore subtus pedibusque nigris; alis fusco-violaceis. o.

Long. 13 millim.

Hab. Mexico, near the city (Hoge).

Head narrower than the thorax, coarsely punctured, rounded in front, the part

behind the eyes less than their length; black, covered with long black hairs; the

vertex with long ferruginous hair. The antenne longer than the head and thorax

united, black; the scape shining; covered with long black hairs; the flagellum with a

fuscous down; the third and fourth joints equal. The thorax slightly widened

towards the middle, black ; the pro- and mesonotum, with the scutellum, covered with

long ferruginous hair, as on the vertex of the head. The pleure coarsely reticulated

and sparsely covered with long black hair. The median segment coarsely reticulated

and covered with long black hair; it has a rounded slope above. The abdomen longer

than the head and thorax united, black; from the middle of the second segment

covered all over with long ferruginous hair; the petiole narrowed at the base,

covered with long black hair; the base of the second seginent coarsely punctured,

covered with long, black, somewhat depressed hair. The pygidium is indistinctly

keeled in the middle; black, shagreened, almost hidden by the long ferruginous

hair of the fifth segment. The basal ventral segment shining, bearing large deep

punctures; the keel only reaching to the middle, becoming gradually raised to its

apex, which hardly projects; the apical half of the segment with an oblique slope.

The second ventral segment has large widely-separated punctures, and is sparsely covered

SPH ZROPHTHALMA. . 371

with black hairs ; the other ventral segments are finely transversely striated at the base,

the apex with smaller punctures than on the second segment; all the segments at the

apex are fringed with long black hairs ; the hypopygium offers no noteworthy peculiarity.

The legs black and covered with black hair, the calcaria being also black. The wings

smoky, the apical portion from the apex of the radial cellule being darker and more

uniformly coloured; the radial cellule wide, projecting beyond the apex of the third

' cubital cellule ; the basal abscissa of the radius oblique and, if anything, longer than

the apical abscissa, which is only very slightly oblique, being almost straight; the first

- cubital cellule is shorter than the radial and at the bottom is, if anything, shorter than

the second; the first and second transverse cubital nervures are bluntly elbowed at the

bottom; the top of the second cubital cellule is a little longer than the space bounded

by the first transverse cubital and the first recurrent nervures, the latter being received

near the basal fourth of the cellule; the third cubital cellule is only indicated by the

stump of the third transverse cubital nervure at the top. The tegule are very shining,

smooth, and broad.

122. Spherophthalma rodriguezi.

Nigra; capite, prothorace, scutello abdominisque apice late auranteo-hirtis; abdominis segmento 2° fere toto

auranteo ; pedibus nigris; alis fuscis. <.

Long. 10 millim.

Hab. Guatemaa, Capetillo (Champion).

Head a little narrower than the thorax, rounded in front and behind, the part

behind the eyes only a little shorter than them, black ; the top to the points of inser-

tion of the antenne densely covered with long pale fulvous hair; below the antenne

the hair is long and black; the mandibles are entirely black. The antenne are shorter

than the head and thorax united, black; the scape punctured and covered with long

black hair; the second joint is also covered thickly with stiff black hair; the flagellum

with a fuscous down; the third and fourth joints are subequal. ‘The thorax is black ;

the pronotum and the scutellum thickly covered with long pale fulvous hair; the meso-

notum rugose and covered with stiff black hairs. The median segment has an abrupt

oblique slope; it is coarsely reticulated and covered with very long pale hairs. ‘The

pleure have large, deep, round punctures, except the base of the metapleure, which

has only one or two; they are covered with long pale hairs, as on the median segment.

The abdomen is as long as the head and thorax united, and is wider than the

thorax. The petiole becomes gradually wider to the apex; it bears large, deep, wide

punctures, and is covered with long pale hairs. The second segment is finely

punctured ; the base and apex are black, the black projecting in the middle,

especially on the apical patch, which is the larger of the two ; the centre is orange ;

the black parts are covered with black, the orange part with orange hairs; the extreme

| 3 BB 2

372 - HYMENOPTERA.

apex, and all the other segments also, thickly covered with long rufo-fulvous hair.

The pygidium is black. The ventral segments are entirely black, and are sparsely

covered with long pale hair; the basal segment has no keel, the centre being quite

flat, and is coarsely punctured; the second segment is strongly, the others at the apex

finely, punctured. The legs are black, and are covered with long, soft, pale hairs; the

calcaria are black. The wings are smoky, lighter coloured in the centre; the radial

cellule is wide and projects a little beyond the third cubital; the first abscissa of the

radius is straight and oblique, the apical abscissa very slightly curved, especially

beneath ; the first cubital cellule is a little longer than the radial; the first transverse —

cubital nervure is curved, the second oblique; at the top the second cubital cellule is

about the same length as the space bounded by the first transverse cubital and the

recurrent nervures, the latter being received in the basal third of the cellule ; the third

transverse cubital nervure is broken off near the top.

123. Spherophthalma thalia.

Nigra; abdomine ferrugineo, basi et apice nigris; capite, prothorace, metanoto, mesopleuris petioleque longe

albo-hirtis; alisfuscis. <¢.

Long. 15 millim.

Hab. Mexico, Chilpancingo 4600 feet and Venta de Zopilote 2800 feet, both in

Guerrero (H. H. Smith). ,

Head distinctly narrower than the thorax, rounded in front and behind, densely

covered all over with long greyish hair; the mandibles and the antennal tubercles

black. The antenne are shorter than the head and thorax united, punctured, covered

with long white hair ; the third and fourth joints are subequal. The thorax is more

than three times the length of the head; the prothorax densely covered with dull

griseous pubescence; the mesonotum covered with black depressed hair, coriaceous ;

the scutellum covered with long griseous hair; the median segment with a gradual

rounded slope, and covered all over with griseous hair, which hides the sculpture. The

pleure densely covered with griseous hair; the metapleure reticulated, and with the

hair longer. The abdomen ferruginous, except the basal and apical segments, which

are black. The basal segment longer than broad, becoming dilated towards the apex;

coarsely punctured and covered with long pale hair; the second segment closely punc-

tured and thickly covered with long pale hair; the apices of the segments fringed with

rufous hair; the pygidium black, coriaceous, and fringed with long stiff hair. The

basal ventral segment black, punctured; the basal half of the keel straight, the apical

half raised gradually to the apex. The second ventral segment strongly punctured and

covered with pale hair; the third and fourth segments thickly covered with longer pale

hair; the fifth and sixth segments black, punctured, and covered with long black hair,

SPH EROPHTHALMA. 873

The legs are black, and densely covered with white hair. The wings fusco-hyaline,

paler towards the base; the radial cellule wide, not reaching to the apex of the third

cubital cellule, its apex truncated; the first cubital cellule longer than the radial

cellule, but shorter on the lower side than the second ; the second cellule at the top is

a little less than the space bounded by the first transverse cubital and the first recurrent

nervures; the first and second transverse cubital nervures are roundly elbowed; the

first recurrent nervure is received in the basal fourth of the cellule; the third cubital

cellule is sharply angled above the middle, and is much narrowed at the bottom; the

second recurrent nervure is joined to the third transverse cubital nervure.

124. Spherophthalma melanogaster.

Long. 11 millim. 6.

Hab. Mexico, North Yucatan (Gaumer).

Identical in coloration with S. thalia, except that the ventral surface is entirely

black, but much smaller, and having the second cubital cellule at the bottom not

longer than the first, and otherwise easily separated by the apex of the first ventral

segment being curved and less developed than the hase.

The head not much narrower than the thorax, covered all over with a dense greyish

pubescence, and with long fuscous hairs; behind the eyes it is not developed half their

length; the antennal. tubercle and the mandibles black. The antenne stout, black, as

long as the head and thorax united; the scape thickly covered with long white hair ;

the third and fourth joints subequal. The thorax is not three times the length of the

head; the pronotum covered all over with greyish hair; the mesonotum coarsely

punctured and covered with black hair; the scutellum thickly covered with long grey

hair, the median segment being also covered with long white hair and coarsely reticu-

lated. ‘The abdomen is much longer than the head and thorax united ; deep orange,

except the base and apex and the greater part of the ventral surface, which are black.

The petiole is slightly but gradually dilated to the apex, coarsely punctured, and

covered with long, soft, white hair; the apex of the sixth and the whole of the apical

segment are covered with black hair; the third and fourth ventral segments are obscure

piceous at the base. The wings are short and paler at the base. The second transverse

cubital nervure is roundly, the third more sharply, elbowed; the third a little above

the middle forming an acute angle, and the lower part of the nervure almost obliterated.

The first recurrent nervure is received in the basal third of the cellule, the second

apparently interstitial.

Bye! _ HYMENOPTERA.

The following species of this section have been described from the male sex only,

and are unknown to me :—

125. Spherophthalma andreniformis.

Muitilla andreniformis, Smith, Cat. Hymen. Ins. iii. p. 55 (¢) ’.

Spherophihaima andreniformis, Blake, Trans. Am. Ent. Soc. xiii. p. 228 °,

Hab. Mexico *, Vera Cruz}.

126. Spherophthalma apicalata.

Mutilla apicalata, Blake, Trans. Am. Ent. Soe. iii. p. 238 (¢)?.

Spherophthalma apicalata, Blake, op. cit. xiii. p. 230°.

Hab. Mexico (Sumichrast } 2).

127. Spherophthalma azteca.

Mutilla azteca, Blake, Trans. Am. Ent. Soc. iii. p. 240 (¢)*.

Spherophthalma azteca, Blake, op. cit. xiii. p. 232°.

Hab, Mexico (Sumichrast | 2),

128. Spherophthalma iztapa.

Mutilla iztapa, Blake, Trans. Am. Ent. Soc. iii. p. 241 (¢)?.

Spherophihalma iztapa, Blake, op. cit. xiii. p. 233°.

Hab. Honpvuras}. .

Blake? suspects that this may be the male of 8. proserpina.

129. Spherophthalma, foxi.

Spherophthalma foxi, Cocker. Ent. News, v. p. 199 ( 3)’.

Hab. Mexico, Juarez in Chihuahua (Cockereli 1).

The following species are at present of uncertain generic location. 4S. orizaba was

referred by Blake to his genus Photopsis (= Agama, olim, cf. Blake, Trans. Am. Ent.

Soc. 1886, p. 179). At present only males are known, but possibly the female may be

represented by the apterous genus Chyphotes, Blake (Trans. Am. Ent. Soc. 1886,

p. 276). |

Fox (Proc. Calif. Acad. Sci. iv. (2) p.—) splits up Photopsis, Blake, into two,

referring one part to Spherophthalma and the other to his own genus Brachycistis;

the latter being distinguished by having the pronotum placed some distance below the

SPH ZROPHTHALMA. 375

level of the dorsulum, which is also much more strongly convex; the stigma

larger; the middle tibiz with only one spur; and the recurrent nervures received

by the second and third cubital cellules, instead of both being received by the

second.

The species are very similar in the coloration of the body, being, as a rule, of a

uniform brownish tint and without much, if any, sculpture, this being also the case

with Brachycistis. In both groups the abdomen may have a long or a short peduncle ;

and the wings may have two or three cubital cellules. The stigma is larger than in

the typical Spherophthalma.

So far as is known the species are nocturnal in their habits and come to light at

night. Hitherto they have been found chiefly in the southern parts of the United

States and in Mexico.

_ In the arrangement of the species I have followed Blake as far as possible.

130. Spherophthalma orizaba.

Agama orizaba, Blake, Trans. Am. Ent. Soe. iii. p. 259°.

Photopsis orizaba, Blake, op. cit. xii. p. 2607.

Hab. Mexico } 2,

This species has only two cubital cellules ; the others here enumerated having three.

I am not sure if it is to be referred to the genus EKdrionotus, Radoszk., which has only

two cubital cellules, with the abdomen subsessile. As defined by Radoszkowsky,

Photopsis has only two cubital cellules.

131. Spherophthalma wax.

Ferruginea, longe albo-hirta; abdomine nigro, albo-hirto, basi apiceque ferrugineis; alis hyalinis, stigmate

nigro, o.

Long. 9 millim.

Hab. Muxico, Northern Sonora (Morrison).

The head isa little narrower than the thorax, ferruginous, the ocelli ina black

patch; covered all over with widely separated and not very deep round punctures ;

the vertex and front bearing long fuscous hair; the oral region and the base of the

mandibles covered with long white hair; the tips of the mandibles blackish. The

antenne are as long as the head and thorax united, fuscous, the basal two joints

ferruginous; the third joint a little longer than the fourth; the scape covered with

long white hair, the flagellum with a short close fuscous pubescence. The thorax is

wider than the head, covered, but not very closely, with long white soft hair; above

not very distinctly punctured; the mesopleure more strongly punctured; the meta-

pleure indistinctly reticulated ; the median segment distinctly and regularly reticulated,

376 . HYMENOPTERA.

with a rounded slope, and covered with long white hair. The abdomen longer than

the head and thorax united; the petiole twice as long as broad, dilated towards the

apex, closely punctured, and covered with long soft white hair, which is darker in

tint on the upper than on the lower side, ferruginous in colour like the thorax; the

rest of the abdomen deep black, covered, especially at the apex of the segments, with

long soft white hair; the second segment above and beneath is indistinctly punctured.

The legs are of a darker ferruginous tint than the thorax, the four hinder femora and

the tibie more or less blackish, and are covered with long white soft hair. The wings

are hyaline, very slightly suffused with a smoky tint below the stigma; the stigma and

the costa immediately beyond the radial cellule deep black. ‘The apex of the radial

cellule is rounded, and extends beyond the apex of the third cubital cellule; the first

and second transverse cubital nervures are distinctly traced and are curved, the third is

rather faint, but still visible ; the recurrent nervure is received in the basal third of —

the cellule.

132. Spherophthalma gamelia.

Long. 11 millim. 6.

Hab. Guatemaua, Capetillo (Champion).

Similar in coloration to S. waz, except that the antenne at the base are coloured

like the flagellum ; the legs bear much more black on the femora and tibie; the

petiole is longer, and is not so much dilated towards the apex, the apical half also

being black; the wings are darker in tint; and the radial cellule is larger compared

with the cubitals.

The head is nearly as wide as the mesothorax; the vertex indistinctly punctured ;

the front almost impunctate, depressed in the centre; the whole head covered with

long pale fuscous hair. The antenne are nearly as long as the head and thorax united ;

black, the extreme base only being rufous; underneath, the flagellum is duller in tint

and it bears an indistinct pile; the pile on the scape is longer and paler; the third

and fourth joints are subequal. The thorax is rufous, covered with long pale fuscous

hair; the pronotum finely, the mesonotum much more strongly punctured, and with

the parapsidal furrows distinct and deep; the mesopleure not very strongly punctured ;

the metapleuree and the median segment reticulated. The abdomen is distinctly longer

than the head and thorax united, deep black, except the petiole, which is rufous at

the basal half; the petiole is more than twice as long as broad, and not much dilated

towards the apex; the petiole and the second segment covered, but not thickly, with long

fuscous hair; the edges of the other segments fringed with long white hair; the basal

segment indistinctly punctured, the others impunctate; the ventral segments are

fringed with long white hair. The legs are black and covered with long soft white

hair ; the tarsi with the hair closer and shorter; the calcaria are fuscous. ‘The wings

SPH ZEROPHTHALMA, 377

are hyaline, with a faint fuscous tinge ; the stigma is deep black; the radial cellule is

hardly so long as the first and second cubital cellules united, the radius roundly curved

at its apex; the first cubital cellule is sharply angled at the base; the first recurrent

nervure is received not far from the middle of the cellule; the third transverse cubital

nervure is almost obliterated, being very faint, beneath it is narrowed and bluntly

angled in the middle.

133. Spherophthalma dictus.

Long. 10 millim. ¢.

Hab. Mexico, Tres Marias Is. (Forrer).

Almost identical in coloration with S. wax, but differing from it in the abdomen

being much less pilose, the second segment almost glabrous (whereas in S. waz it is

covered all over with long pale hair); the petiole a little longer compared with the

second segment and not so stout towards the apex; the wings shorter compared with the

body ; the reticulation on the median segment more distinct, the segment itself with

a somewhat more gradually rounded slope.

The head is not much narrower than the thorax and is abruptly contracted behind

the eyes; smooth, shining, very indistinctly and finely punctured, and not very thickly

eovered with long fuscous hair. The pit in front of the ocelli isdeep, moderately wide,

and curved. The mandibles are entirely ferruginous, punctured at the base, and

covered with long white hair. The antenne are stout, black, except the basal two

joints, which are ferruginous; the scape is sparsely covered with pale fuscous hair;

the flagellum is closely covered with white pubescence; the third joint is at least one-

quarter longer than the fourth. The thorax is shorter than the abdomen and thicker

than it; the mesothorax is covered with long fuscous, the metathorax with long white

hair ; the hair on the prothorax being also long, soft, and white. The punctuation on

the prothorax is fine and close, on the mesonotum it is much coarser; the median

segment has a gradually rounded slope and is reticulated all over. The mesopleure

are punctured; the metapleure, except at the base, are reticulated. The petiole is

gradually dilated towards the apex, and is not much shorter than the second segment ;

it is rather strongly punctured and covered with long white hair. The other abdo-

minal segments are all deep black, smooth, shining, and impunctate, and fringed at

the apices with long soft white hair. The legs are black, the coxe and trochanters

ferruginous, the calcaria fuscous; they are covered all over with long white hair, that

on the femora being longer and sparser. The wings are almost hyaline, the nervures

fuscous, the stigma nearly black; the radial cellule is as long as the first and second

cubital cellules united; the radial nervure is curved at the base and apex; the first

transverse cubital nervure is oblique, the second somewhat roundly curved at the top,

the third obliterated or but very faintly indicated ; the cubital nervure is obliterated

BIOL. CENTR.-AMER., Hymenopt., Vol. II., May 1896. 3 CC

378 . HYMENOPTERA.

beyond the second transverse cubital nervure; the recurrent nervure is received shortly

before the middle of the cellule, the cubital nervure being angled where the recurrent

nervure is received.

134. Spherophthalma ictinus.

Ferruginea, abdomine nigro-fusco, longe albo-pilosa ; thorace dense punctato, segmento mediali reticulato ; alis

hyalinis, nervis pallide fuscis. ¢.

Long. 9 millim.

Hab. Mexico, Northern Sonora (Morrison).

The antenne are as long as the thorax, pale ferruginous; the flagellum bare, paler

in tint than the scape; the third and fourth joints subequal. ‘The head is not much

narrower than the mesothorax, narrowed behind the eyes, where it is developed a little

longer than their length, the sides rounded; it is covered with long pale hair, and is

indistinctly punctured and shining; there is a furrow round the ocelli. The mandibles

have the tips black; the base is covered with long white hair. The thorax is covered

all over with long white soft hair. ‘The mesonotum is rather strongly punctured, but

with the punctures clearly separated; the parapsidal furrows deep. The scutellum is

also strongly punctured and has thick hair. The median segment has a gradually

rounded slope; above it is strongly reticulated and covered with long white hair. The

pleura are reticulated, except the part between the meso- and metapleure, which is

smooth, shining, and glabrous; they are elsewhere covered with long soft fuscous hair.

The abdomen is nearly as long as the head and thorax united, and distinctly wider

than the latter. The petiole is gradually dilated towards the apex ; its punctuation is

very obscure, if not obsolete, and it is sparsely covered with long white hair. The

second segment is not much longer than the petiole; smooth, shining, and impunctate,

covered all over, as are also the other segments, but much more thickly, with long

white hair. The ventral segments are smooth, shining, and impunctate, and covered

with long soft white hairs. The wings are clear hyaline, without any smoky tinge;

the nervures are pallid testaceous, the costa and the stigma having a deeper and darker

tint; the radial cellule is a little shorter than the first and second cubital cellules

-united; the first transverse cubital neryure is curved, the second is straight and slightly

oblique ; the recurrent nervure is received in the basal third of the cellule; the trans-

verse basal nervure is almost interstitial. ‘The legs are of a paler testaceous tint than

the body, being pallid yellowish-testaceous, with the apex of the hind tibie and the

four hinder tarsi for the greater part blackish; the calcaria are blackish.

The following (S. cowqualis) is a well-marked species. The antenne are short and

thick ; the entire body is densely covered with long white hair; the thorax is coarsely

punctured ; the abdomen is elongate and with a rather long petiole; the legs are more

SPHHROPHTHALMA. 379

or less infuscated ; the wings do not reach the apex of the abdomen, the third trans-

verse cubital and the second recurrent nervures are obliterated entirely, and the cubital

nervure is also obliterated at the second transverse cubital nervure. In some respects

it agrees with S. paron, e.g. in having only two transverse cubital nervures; but its

body is narrower and more elongated, and the petiole is longer and narrower and not

so much dilated towards the apex.

In S. coequalis (3) the outer piece of the edeagus is narrow, sharply pointed, and

curved at the top; at the curve on the inner side it bears long hair; the volsella is

long, narrow, reaches near to the top, and is marked with some stiff bristles.

135. Spherophthalma cozqualis,

Ferruginea, longe fusco-hirta, abdomine fusco-maculato ; femoribus tibiisque posterioribus fuscis ; alis hyalinis,

nervis pallidis, stigmate fusco. <.

Long. 13 millim.

Hab. Mexico, Northern Sonora (Morrison).

The head is distinctly narrower than the thorax, narrowed and rounded behind, not

much developed behind the eyes; punctured, but not roughly, and with the punctures

distinctly separated, shining, covered with long soft white hair; the ocelli in a black

spot and with a semicircular furrow in front; the tips of the mandibles black. The

antenne are not much longer than the head and thorax united, very little attenuated

towards the apex; rufous, covered with a white down and long white hair, the scape

paler; the third and fourth joints subequal. The pro- and mesonotum not very

shining, rather strongly punctured, covered with long pale soft hair; the propleure

strongly punctured, almost reticulated ; the mesopleure much less strongly punctured

and with the punctures widely separated. ‘The median segment hasa gradually rounded

slope, and is covered with long pale fuscous hair; the back reticulated; the sides

rather strongly punctured, except at the base, where there is a smooth shining space.

The petiole is a little shorter than the second abdominal segment; it is gradually

widened towards the apex and without a distinct neck at the base; very coarsely punc-

tured and covered with long pale fuscous hair. ‘The other segments are scarcely

punctured, sparsely covered with fuscous hair, and black at their apices. The petiole

beneath is punctured somewhat strongly, keeled down the edges, and covered with long

pale hair ; the other segments are impunctate beneath, at most only obscurely shagreened,

very sparsely haired, and blackish at the apices; the apical segment is keeled at the tip,

and also, but more obscurely, along the sides. The legs are covered with long white

hair ; the anterior pair are paler than the others, and have no black on them ; about three-

fourths of the middle femora and the greater part of the hinder femora are blackish ;

the four hinder tibie are dark fuscous; the calcaria are blackish. The wings are

clear hyaline and reach near to the apex of the abdomen; the costa and nervures are

pale testaceous, almost pale yellow; the stigma is fuscous; the base and apex of the

3 cc 2

380 HYMENOPTERA.

radius is oblique; the first recurrent nervure is received in the basal third of the

cellule; the third transverse nervure is completely obsolete, except a very obscure

stump at the top; there is only one recurrent nervure ; the basal nervure is not

interstitial.

The fact of this species (and the same may be said of others) having the stump of

the third transverse cubital nervure indicated at the top, shows that the number of

marginal cellules in this group cannot be used as a generic character, and must even be

used cautiously in splitting up the genus into sections; for even in the same species

we find this nervure much more faintly traced in some specimens than in others. The

same remark applies to the absence of the second recurrent nervure, which shows an

equal tendency to become obsolete, it being fainter in some specimens than in others

of the same species.

The following species (S. Jacuna) has the abdomen shorter and broader than in any

of the other members of this section here described, it being, if anything, shorter than

the head and thorax united; the petiole is more than half the length of the abdomen,

much narrowed at the base, and broadly dilated at the apex, the dilated part not being

much narrower than the thorax; the depression on the sternum is deep and wide,

particularly towards the apex, in front of the coxe it is very deep, the base of the

depression being oblique, on the inner side it is separated from the central longitudinal

furrow by a sharp keel.

136. Spherophthalma lacuna.

Long. 10 millim. of.

Hab. Mexico, Northern Sonora (Morrison).

The head very slightly narrower than the mesothorax, deep black, shining, impunc-

tate, almost glabrous, the clypeus and mandibles ferruginous, the tips of the latter

black ; behind the eyes it is narrower, not half their length, and rounded. The ocelli

are prominent; a furrow surrounds the anterior ocellus and from the centre of this

furrow a straight keel runs to the antenne. The antenne ferruginous, covered with a

pale microscopic down ; the basal joint stout, sparsely covered with longish white hair ;

the third and fourth joints equal in length (the joints beyond the sixth broken off). The

thorax shining, almost impunctate, sparsely covered with white hair; the parapsidal

furrows reaching to the scutellum, but not to the pronotum; there is a transverse

furrow at the base of the scutellum, which is flat and very shining. The median segment

has a gradually rounded slope to the apex, smooth, shining, impunctate, or, at most,

faintly shagreened. The pleura smooth, shining, sparsely covered with soft white hair.

The abdomen is shorter than the head and thorax united; the basal third of the petiole

SPHAROPHTHALMA. 381

narrow, the apical two-thirds dilated to more than twice the breadth of the base and

longer than the median segment. The rest of the abdomen somewhat ovate, shining,

impunctate, sparsely clothed (more thickly towards the apex) with long soft white hair.

Beneath, the petiole is somewhat triangular, smooth, almost glabrous; the other

segments are impunctate, very shining, and sparsely pilose. Except that the tibie are

paler, the legs are ferruginous and very sparsely haired; the anterior femora have a

paler, more yellowish tint than the others. The wings extend fully two millimetres

beyond the apex of the abdomen and are clear hyaline, the stigma black, the nervures

also dark; the stigma is longer than the radial cellule ; the basal abscissa of the radius

is oblique, its apex also slightly oblique, with a short fork issuing from its base; the

first and second transverse cubital nervures converge at the top, but do not quite unite,

and are both oblique; the third transverse cubital nervure is only very slightly oblique

and is a little curved; the cubital nervure ends at the apex of the third cubital cellule ;

the first recurrent nervure is received in the basal third of the cellule, the second

nearly in the centre; both the recurrent nervures are curved.

The following three species are very closely related ; they have only one recurrent

and two transverse cubital nervures, the second recurrent nervure being obliterated.

They are thickly covered with long white hair ; the antenne and legs are pallid yellow ;

the apical half of the abdomen is infuscated; and the median segment is strongly

reticulated. I have only seen males of each species.

1 (2). The breast with two tufts; mesonotum coarsely punctured . . paron.

2 (1). The breast without tufts; mesonotum reticulated . . . . . eubule, phylacis.

137. Spherophthalma paron.

Ferruginea, abdominis apice late nigro, longe albo pilosa; pedibus pallide flavo-testaceis, apice tibiarum tar-

sisque posticis nigris ; alis hyalinis, stigmate testaceo, nervis pallide flavis. ¢.

Long. 14-15 millim.

Hab. Mexico, Northern Sonora (Morrison).

The head is a little narrower than the mesothorax, sparsely punctured, more strongly

on the front, covered with long pale fuscous hair; the mandibles covered with long

pale yellow hair, the tips black; the hind ocelli bordered by a deep furrow behind; the

posterior edge of the head is rounded behind, where it is developed more than the

length of the eyes. The antenne are entirely pale yellow ; the scape with long white

hair; the flagellum almost bare; the basal joint curved; the third and fourth joints

subequal. ‘he thorax is covered all over with long white hair. The mesonotum is

strongly punctured; the longitudinal furrows are distinct; the scutellum is more

rugose and more closely punctured than the mesonotum, and has the hair longer, the

transverse furrow at its base distinct and deep. The median segment has a gradually

382 . HYMENOPTERA.

rounded slope; it is coarsely reticulated and sparsely covered with long white hair; in

the centre at the base is a small area longer than broad, keeled down the sides and

down the middle, the enclosed space being quite smooth. The propleure are coarsely

reticulated ; the mesopleure are coarsely punctured, and have a depressed, longitudinal

space in the middle; the apex and base of the metapleure are smooth, impunctate,

shining, the rest of the metapleure reticulated. The sternum behind the fore legs

sharply depressed, gradually raised towards the apex, and terminating in two stout,

sharply pointed teeth in the middle. The abdomen is not much longer than the

thorax, shining, densely covered with long white hair, the posterior segments being

densely fringed with it. The petiole is very shining, the apex hardly punctured ;

sparsely covered with long white hair; beneath, it is rugosely punctured. The second

ventral segment is impunctate, the sides broadly black; the apical ventral segment is

rather weakly punctured and has a slight depression in the centre towards the apex.

The legs are pale yellow, except the apex of the four hinder tibie and the tarsi, which

are blackish ; the hair is long and white. The wings are uniformly clear hyaline, the

nervures pallid yellow, the stigma testaceous ; the radial cellule is twice the length of

the stigma; the first transverse cubital nervure is distinctly, the second very slightly,

curved ; the first recurrent nervure is received towards the basal third of the cellule,

the second is obliterated entirely; the cubital nervure does not extend beyond the

second transverse cubital nervure.

. This species approaches S. ewbule, but it is larger and stouter; the mesonotum is

coarsely reticulated, not punctured, and is without furrows; the head is much more

developed behind the eyes; the underside of the petiole is strongly punctured ; and the

sternum has two teeth:

138. Spherophthalma phylacis.

Long. 18 millim. @.

Hab. Mexico, Northern Sonora (Morrison).

Almost identical in coloration with S. paron, but easily known from it by the

absence of the teeth on the sternum. ‘The head not quite so wide as the mesothorax,

shining, covered with long white hair, bearing moderately large punctures at the sides ;

the vertex almost impunctate, behind with a distinct margin; the ocellar space not

raised above the rest of the vertex, the space between the ocelli closely and finely

punctured ; behind the eyes the head is as long as they areandrounded. ‘The mandibles

are rufous, the tips black; sparsely covered with long white hair. The antenne are

stout, nearly reaching to the apex of the scutellum; the scape sparsely covered with

long white hair; the flagellum almost bare, or, at most, with a white pile; the third

joint is shorter than the fourth. The thorax is covered all over with long white hair ;

coarsely punctured, the punctures running into reticulations at the apex; the lateral

furrows are almost obliterated by the punctures. The scutellum coarsely, rugosely

Seo eee eT RS

SPH ZROPHTHALMA. 383

punctured ; the hair on it longer than on the mesonotum ; at the base is a rather deep

transverse furrow. The median segment has an oblique slope, the top rounded ;

reticulated all over; at the base in the centre is a small area wider than long and

divided in the centre by a straight keel. The pro- and mesopleure are coarsely and

closely punctured; the metapleure smooth, impunctate, and excavated at the base, the

rest reticulated. The abdomen is as long as the head and thorax united; the petiole

not quite so long as the second segment, impunctate, covered with long white hair,

gradually dilated towards the apex; the other segments smooth and impunctate, their

apices densely fringed with white depressed hair, the other portions being covered with

longer more erect hair; the pygidial area finely and closely rugose, fringed laterally

with long white hair, the centre forming a well-marked space, somewhat acutely pointed

at the base, the apex transverse. ‘The basal ventral segment is punctured, the punc-

tures large and widely separated; the central part projecting, terminating in a blunt

edge; the sides have two keels. The following ventral segments are impunctate, more or

less infuscated, their apices densely fringed with long white hair, the other parts having

also long white hair; the apical segment with widely separated punctures, the apex in

the centre depressed, sparsely covered with long white hair. The legs are pale yellow,

covered with long white soft hair; the tarsal joints slightly infuscated at the apex ;

the long spur of the hind tibize reaches beyond the middle of the metatarsus. The

radial cellule is twice the length of the stigma. ‘he radius commences at the basal

third of the stigma; at the base it is oblique, but the oblique part is not clearly separated

from the rest; at the apex it is rounded. ‘The base of the second cubital cellule is

almost triangular. ‘The first transverse cubital nervure is a little curved and is longer

than the first abscissa of the cubitus. The first (and only) recurrent nervure is received

in the basal third of the cubitus, which is angled where it is received ; the cubitus is

obsolete beyond the second transverse cubital nervure.

S. phylacis is closely allied to S. eubule, of which it may be a form; but, judging

from the material at my command, the present insect is larger and stouter ; the antenne

are thicker, with the third joint longer, compared with the fourth ; the mesonotum is not

so strongly punctured ; the scutellum is not so much narrowed towards the apex ; the

median segment is longer and not so strongly reticulated ; the depression in the centre

of the mesosternum is narrower and less well marked; the petiole is more slender; the

abdomen. is broader and more pilose; and the second transverse cubital nervure is

received nearer the middle of the radial cellule.

139. Spherophthalma eubule.

Ferruginea, longe dense pallide pilosa; abdominis. apice nigro-fusco, thorace supra reticulato; alis clare

hyalinis, nervis stigmateque flavis. <¢.

Long. 11 millim.

Hab. Mexico, Northern Sonora (Morrison).

384 HYMENOPTERA.

The head is nearly as wide as the thorax, narrowed and rounded behind, where it is

shorter than the length of the eyes; shining, sparsely punctured, covered, but not very

thickly, with long soft pale hair; the ocelli brownish and not situated ona black patch ;

the mandibles broadly black at the apex. The antenne are, if anything, longer than

the head and thorax united; bare, towards the apex covered with a. white down; the

flagellum at the base darker, the scape lighter and yellower in colour. than the rest ;

the third joint, if anything, shorter than the fourth. The thorax is densely covered

with long white soft hair; the mesonotum is coarsely punctured, the punctures almost

running into reticulations and nearly obliterating the two longitudinal furrows ; the

scutellum coarsely and closely punctured. The median segment has an abruptly

rounded slope, and is strongly reticulated all over, except a smooth spot in the centre

at the base divided by a curved furrow. The pro- and mesopleure strongly punctured,

except the apex of the latter; the metapleura reticulated, smooth at the base. The

abdomen is a little longer than the head and thorax united, ferruginous, but of a darker

tint than the thorax, and with the base of the second and other segments more or less

blackish. The petiole is longer than broad, a little shorter than the second segment,

gradually dilated towards the apex, smooth and impunctate ; the second segment is

also smooth and impunctate, covered with long pale soft hair; the other segments are

covered with long white hair, the hair having a slight fulvous tinge; the apical

segment is keeled down the side, rounded at the apex, the surface shagreened. The

basal segment on the underside is bluntly keeled down the centre, the apex oblique,

the surface bearing somewhat large, distinctly separated, punctures. The second ventral

segment bears some not very large, shallow punctures; the other segments are covered

with long pale hair, hiding the surface; the apical ventral segment is not so hairy as the

others, and is more strongly punctured. The legs are of a paler and more yellowish

colour than the thorax or abdomen; they are covered thickly on the tibie and tarsi

with long pale soft white hair; the spurs are pale; the four hinder femora are darker

than the front pair, particularly towards the apex. The wings reach beyond the apex

of the abdomen and are clear hyaline throughout; the nervures are pale yellow, the

stigma having a darker tint; the radius is curved at the base and apex; the first

transverse cubital nervure is curved, the second is straight and slightly oblique, and the

third is obliterated completely ; the cubital nervure is angled where the first (and only)

recurrent nervure is received before the middle of the cellule; the transverse basal

nervure is received quite close to the transverse median, being almost interstitial.

_ This species is smaller than S. paron, and has the abdomen longer compared with the

head and thorax, with the petiole more gradually dilated ; the fourth antennal joint is

longer compared with the third ; and the mesonotum is reticulated (not punctured), with

the parapsidal furrows obsolete.

SPHAROPHTHALMA. 385

The following two species have, as in S. paron, &c., the third transverse cubita

nervure and the second recurrent nervure obliterated entirely. They are small species,

with rather pallid legs and antenne, and with the abdomen banded with black; the

femora are more or less infuscated. In S. aretes the petiole is much longer than in

S. nigrobalteata, and it is also more deeply coloured; the petiole and the thorax being

also much more strongly sculptured; besides being less thickly haired, the hair itself

is shorter.

140. Spherophthalma nigrobalteata.

Long. fere 7 millim.

Hab. Mexico, Northern Sonora (Morrison).

The head as wide as the thorax, the vertex indistinctly punctured, rather thickly

covered with long white hair; the ocelli in a black patch, the anterior ocellus sur-

rounded by a furrow; behind, the head is rounded and as long there as the eyes; the

tips of the mandibles broadly black. The antennz reach beyond the apex of the

thorax; moderately stout, not tapering much, if it all, towards the apex; the scape

a little curved, bearing white hair; the flagellum with a microscopic white pile; the

third joint distinctly shorter than the fourth, being not much more than twice the

length of the second. The thorax closely covered with long white hair. The propleure

very finely punctured; the mesopleure reticulated, except at the extreme base and at the

apex ; the metapleure reticulated at the apex, the rest impunctate, shining, and a little

excavated. ‘The mesonotum without furrows, finely rugose. The scutellum more

shining than the mesonotum, and much more finely and obscurely punctured. The

median segment has a gradually rounded slope to the apex; coarsely reticulated, except

in the centre at the base; covered with short white soft hair; at the base there is a

broad, somewhat triangular, smooth, shining area, having in the centre two straight

keels, and outside these are two straight keels, the distance separating these being less

than the distance separating them from the outer keels. The abdomen is not very much

longer than the head and thorax united. The petiole is shorter than the second

abdominal segment, gradually dilated towards the apex; smooth, impunctate, bearing

long white hair ; its extreme apex is blackish. The second and following segments are

impunctate, smooth, and shining; the second segment is sparsely covered all over with

long white hair ; the other segments have the hair longer and closer, especially towards

the apex, where they are blackish; the terminal segment is impunctate, not depressed

in the centre, the apex broadly rounded and pale yellow. The ventral segments are

impunctate, sparsely covered with white hair; the second and following segments

blackish towards the apex; the terminal segment is triangularly depressed at the apex.

The legs are of a paler colour than the body; the femora are more or less infuscated :

the tips of the tarsal joints blackish ; the hind spurs reach a little beyond the middle of

the metatarsus. The wings reach beyond the apex of the abdomen ; clear hyaline, the

BIOL. CENTR.-AMER., Hymenopt., Vol. II., June 1896. 3 DD

3886 | _. HYMENOPTERA.

‘nervures pallid testaceous, the stigma with a more fulvous tint. The radial cellule is

longer than the stigma; the basal abscissa of the radius is short and oblique, the

apical abscissa longer and curved; the first transverse cubital nervure is strongly, the

second very slightly oblique; the third transverse cubital and the second recurrent

nervures are entirely obliterated; the first recurrent nervure is received in the basal

third of the cellule.

In having the abdomen belted with black this species resembles S. aretes; but. that

insect has the petiole (and especially the narrowed basal part) longer and towards the

apex much more strongly punctured. S. aretes also agrees with S. nigrobalteata in

having the median segment reticulated, but the base in the centre is reticulated like

the rest of the segment, there being no keels with the intervening. spaces impunctate ;

the metapleure are entirely punctured, and the third antennal joint is much longer in

proportion to the fourth.

141. Spherophthalma aretes.

Ferruginea, antennis pedibusque pallide flavis; abdominis segmento 3° nigro balteato; alis hyalinis, apice

levissime fumato, nervis pallide flavis, stigmate flavo. o.

Long. 7 millim.

Hab. Mexico, Northern Sonora (Morrison).

The head is nearly as wide as the thorax, impunctate, sparsely covered with long

white hair; the mandibles yellowish, the tips ferruginous; behind the eyes the head

is much narrowed and rounded, and is developed there nearly the length of the eyes.

The antennz are a little longer than the head and thorax united, not tapering much, if

at all, towards the apex, uniformly pale yellow, clothed with a white microscopic down ;

the third joint is perceptibly longer than the fourth. The thorax is of a deeper

ferruginous tinge than the head, and is sparsely covered with long pale fuscous hair ;

the mesonotum is indistinctly punctured ; the median segment is reticulated and has a

gradually rounded slope; the pro- and mesopleure are punctured, the metapleure

reticulated. The petiole is nearly as long as the second abdominal segment and

becomes gradually thickened towards the apex; it is keeled laterally, coarsely punc-

tured, and covered with long white hair. The second segment is punctured somewhat

strongly; the other segments are impunctate; the third segment has a broad black

band in the middle; the apical segment is paler and without keels. The third and

fourth ventral segments are for the greater part black. ‘The hinder femora are for the

greater part black. The wings nearly reach the apex of the abdomen; the radial

cellule is a little shorter than the stigma, and commences a little beyond its base; the

radial nervure at the base and apex is straight; at the base the second cubital cellule

‘is not half the width it is at the apex; the first recurrent nervure is received shortly

before the first transverse cubital; the second recurrent and the third transverse cubital

nervures are completely obliterated.

SPH ZROPHTHALMA. 387

Apart from the difference in coloration, this species differs from the preceding in

the longer petiole, and in having the radial cellule acutely pointed (instead of truncated)

at the apex.

~The following species (S. otomita, S. laerma, and S. severa) have the abdominal

peduncle narrowed at the base, broadened at the apex, the narrowed part forming a

distinct “neck.” They are also stouter and broader, the thorax especially, except in

S. otomita. The abdomen is short and broad.

142. Spherophthalma otomita.

Ferruginea, capite nigro, pedibus testaceis, femoribus posterioribus fuscis, antennis testaceis; alis hyalinis,

nervis fuscis, stigmate nigro. ¢.

Long. fere 12 millim.

Hab. Mexico, Northern Sonora (Morrison).

The head is narrower than the thorax, rounded, but not much narrowed, behind the

eyes, almost impunctate, sparsely covered with short pale pubescence: the ocelli

large, the posterior two bordered behind and at the sides with a shallow furrow,

there being also a sharper furrow in front of the anterior ocellus. The mandibles at

the base bear some white hair; their tips are black. ‘The antenne are longer than

the head and thorax united, tapering very slightly towards the apex; the flagellum

covered with an obscure white pile; the basal joint short, thick, and with a few white

hairs; the third and fourth joints subequal. The mesonotum is impunctate ; the

parapsidal furrows do not reach the scutellum; on their outer side is a keel which

becomes sharper and more distinct towards the scutellum, with which it unites obliquely.

The scutellum is impunctate and has a furrow across its base; it becomes narrowed

towards the apex and bears a few long white hairs. The median segment has a rather

abrupt slope at the apex; it is smooth, glabrous, except for a few white hairs; there

are no reticulations, but there is a furrow down the centre. The pro- and mesopleure

are impunctate and very shining, as are also the metapleure, which have an oblique

furrow. The abdomen is not much longer than the head and thorax united, and in the

middle is almost as wide as the mesothorax. ‘The petiole is nearly as long as the

second abdominal segment; it is very shining and almost glabrous; the base is

narrow, the apical three-fourths being broad; towards the base of this broad part

is a longitudinal furrow, which does not reach the apex. The other dorsal segments

are impunctate, shining, glabrous or nearly so; the apical segment is depressed at the

sides. On the underside, the petiole is flat, sparsely covered with pale hairs; in the

centre is a straight furrow; there is another furrow down the sides, which have a

distinct margin or keel on the inner side. The legs are covered with long white hair ;

3 DD 2

388 HYMENOPTERA.

the tarsi have white down. The radial cellule is shorter than the stigma; the radial

nervure is oblique at the base and apex, the apical turned-up portion having a short

branch; at the top the second cubital cellule is about the length of the space bounded

by the first transverse cubital and the first recurrent nervures; the second recurrent

nervure is received shortly before the apical third of the cellule; both the recurrent

nervures are bent—the first roundly, the second more acutely; the transverse basal

nervure is interstitial.

143. Spherophthalma laerma.

Long. fere 10 millim. 6.

Hab. Mexico, Northern Sonora (Morrison).

Head deep black, the clypeus and mandibles testaceous, the tips of the latter piceous

and black; shining, impunctate, the top sparsely covered with long pale, soft hairs,

narrowed and rounded behind; the furrow between the hinder ocelli deep and wide; _

the mandibles covered with long pale fulvous hair. The antenne reach beyond the apex

of the thorax, and taper slightly towards the tip, the apical joints curved; the scape

covered with long pale fulvous hair ; the flagellum almost glabrous ; the third and fourth

joints subequal. The thorax shining, almost impunctate, sparsely covered with long pale

soft hair; the lateral furrows on the mesonotum indistinct; the scutellum is narrowed

towards the apex ; the median segment has a gradually rounded slope, shagreened in the

centre towards the apex, indistinctly furrowed down the middle at the base, the furrow

there margined and with an indistinct narrow keel. The propleure are distinctly

punctured ; the mesopleure are distinctly punctured, except at the base and apex , the

sternum is smooth and impunctate ; the metapleure are impunctate, except at the apex,

where they are indistinctly punctured. The petiole is distinctly longer than the second

abdominal segment, punctured towards the apex, and sparsely covered with long pale

hair; the basal third is narrowed beneath, in the middle it is broadly keeled, the sides

furrowed. The other dorsal segments shining, impunctate ; the terminal one broadly

and roundly keeled in the middle at the apex, the sides bearing large, deep, roundish

punctures. The ventral segments are more or less black, not punctured, and covered

sparsely with long fuscous hair. The legs are not very closely covered with long pale

soft hair; the tibie and tarsi have a paler more testaceous hue than the femora. The

wings do not reach the apex of the abdomen, and are clear hyaline, the nervures fuscous,

or fuscous-black at the base ; the transverse cubital and the recurrent nervures pale ; the

radial nervure shorter than the area bounded by the space between the base of the stigma

and the radial nervure, the basal abscissa of the radius oblique; the appendicular

cellule is distinct, the upper nervure curved and pale in colour; the first transverse

cubital nervure is curved at the bottom and is received quite close to the second, which

is a little curved, the third being still more curved; the first recurrent nervure is

SPH EROPHTHALMA. 389

received close to the basal third of the cellule, the second shortly before the middle ;

the transverse basal nervure is not interstitial.

144. Spherophthalma severa.

Long. 9 millim. 6.

Hab. Mexico, Northern Sonora (Morrison).

Very near to S. laerma, but with the hair on the head and thorax longer and thicker ;

the furrows on the median segment much less distinct, almost obsolete ; the radial

cellule shorter and broader; the apical and basal abscissee of the cubitus curved, not

sharply oblique; the second cubital cellule at the bottom shorter, not being much

longer than the space bounded by the second recurrent and the third transverse cubital

nervures ; and the stigma black, not piceous.

The head is not, or very little, narrower than the mesothorax, shining, sparsely

haired; black, behind the eyes with a piceous tinge, impunctate ; the ocelli large,

raised ; the head behind the eyes rounded, being there not half the length of the eyes;

a shallow furrow connects the hinder ocelli, and there is an indistinct one in front of

the anterior ocellus. The labrum and clypeus are piceous, shining, almost bare ; the

clypeus in the centre roundly dilated; the space between the antenne almost bare.

The mandibles are deep piceous, the tips black; shining, sparsely covered with white

and golden hairs; towards the base, on the outer side, there is an elongated depression.

The antenne are stout, nearly as long as the head, thorax, and basal two segments of

the abdomen united, not tapering much towards the apex; the third and fourth joints

subequal, the third a little curved; the scape with some moderately long white hair ;

the flagellum almost bare. The thorax shining, sparsely covered with long white

hair; the mesonotum and median segment covered, but not thickly, with long, soft,

white hair; the mesonotum impunctate, the lateral furrows narrow but distinct, and

commencing not far from the base ; the scutellum very shining, not narrowed towards

the apex, being of nearly equal width throughout. The median segment short, shining,

impunctate, rather thickly covered with soft white hair; at the base in the middle

there is an area twice as long as broad, and sharply pointed at the apex, the two keels

uniting there; there are no keels outside these. The pleure are shining, sparsely

covered with long, soft, white hair; the propleure almost impunctate ; the mesopleure

have distinctly separated round shallow punctures, but are impunctate at the base and

the apex ; the metapleure are indistinctly punctured at the base and apex only. The

petiole is narrowed at the base, at the apex as wide as the base of the second segment,

im punctate, sparsely covered with long pale hair; beneath it is flat, impunctate,

obscurely shagreened and sparsely covered with pale hair, the centre with a straight

furrow, the sides keeled. The other abdominal segments are shining, impunctate, and

sparsely covered with long fuscous hair. ‘The legs are of a paler colour than the body,

890 . HYMENOPTERA. |

especially the tibie; the femora and tibie sparsely covered with long, soft, white hair ,

the tarsi have the hair thicker, closer, and much shorter; the tips of the tarsal joints

are slightly darkened ; the calcaria are pale. The wings are clear hyaline; the stigma

dark, almost black; the nervures fuscous, the transverse cubital and the recurrent

nervures much paler. The radial nervure commences beyond the middle of the stigma,

sharply oblique at the base, curved at the apex, and extending to the stigma; the

second cubital cellule is much narrowed at the top, being not wider there than the

space bounded by the first transverse cubital and the first recurrent nervures; the third

cubital cellule is widened at the apex, the recurrent nervure received shortly before the

middle; the first transverse cubital nervure is roundly curved at the bottom, the second

quite straight and slightly oblique, the third a little bent; the transverse basal nervure

is interstitial.

In the form of the petiole this species agrees with S. laerma; the latter, however, has

the scutellum distinctly narrowed towards the apex, the head more rounded behind, the

body not so strongly pilose, and the petiole shorter compared to the second segment.

I have seen males only of the following three species. They have but two cubital

cellules and one recurrent nervure, the third transverse cubital and the second-recurrent |

nervures being obliterated entirely. ‘The radial cellule is longer than the stigma. The

head, thorax, and petiole are ferruginous, the abdomen black, and the body is covered

with long white hair. The petiole is elongate, dilated at the apex.

The three species may be separated as follows :—

1 (2). The sternum armed with two stout slightly curved teeth . . . . . marie.

2 (1). The sternum without teeth.

3 (4). The greater part of the petiole and legs black . . . . . . . . . damyrus,

4 (3). The petiole entirely and the legs for the greater part ferruginous . . facilis.

145. Spherophthalma marie.

Capite, thorace petioleque ferrugineis ; abdomine longe albo-hirto ; alis hyalinis, nervis stigmateque fuscis. ¢.

Long. 12 millim.

Hab. Mexico, Tres Marias Is. (Forrer).

The head is narrower than the thorax, rather sharply and obliquely narrowed behind

the eyes ; the occiput rounded ; shining, impunctate, sparsely covered with long white

hair; the ocelli in a black spot, indistinctly surrounded by a furrow. The mandibles

rufous, the tips black; the basal part bearing long white hair. The antenne stout,

reaching to the apex of the thorax, black, the scape and second joint ferruginous, the

basal joint with long white hair; the flagellum black, covered with an indistinct pale

pubescence; the third joint almost twice the length of the fourth. The thorax is

SPH ZROPHTHALMA. 391

densely covered all over with long white hair; the pro- and mesonotum coarsely punc-

tured; the median segment with a gradually rounded slope, reticulated uniformly,

except that the spaces in the middle at the base are longer. The pro- and mesopleure

are strongly punctured ; the metapleure reticulated at the apex, the rest smooth and

impunctate. The petiole is gradually dilated to the apex, the apex strongly punctured ;

the other abdominal segments shining, impunctate, covered with long white hair.

Beneath, the petiole is bluntly keeled in the middle, the apex oblique, the sides with

some large punctures ; the other ventral segments impunctate, black, covered with long

white hair. The legs are covered with long white hair; the long spur of the calcaria

fully three-fourths of the length of the metatarsus. The radial cellule is elongate,

narrow; the base of the radius straight, oblique, the apex curved; the recurrent

nervure is received shortly before the middle.

S. marie may be easily known from the other two species of this section by the two

blunt teeth on the mesosternum.

146. Spherophthalma lamyrus.

Ferruginea, longe albo-hirta, apice petioli abdomineque nigris ; alis hyalinis, stigmate fusco. ¢.

Long. 10 millim.

Hab. GuatEMALA, Capetillo (Champion).

The head very little narrower than the mesothorax, shining, impunctate, covered,

but not thickly, with long pale fuscous hairs; the front ocellus with a distinct bordering

furrow, a shallow furrow running down from it; behind, the head is rounded and is

there a little longer than the length of the eyes. The mandibles bear long white hairs ;

the tips piceous. The antenne are a little longer than the thorax, stout, tapering very

little towards the apex; the scape a little curved, sparsely covered with pale hairs ;

the flagellum with an obscure pale down; the third joint slightly longer than the

fourth and shorter than the first. The thorax is covered with long, white, soft hairs;

the pro- and mesonotum rather strongly punctured, the lateral furrows on the meso-

notum distinct, reaching to the scutellum, which is strongly punctured and slightly

narrowed towards the apex ; the transverse furrow at the base of the scutellum deep,

The median segment has a gradually rounded, somewhat abrupt slope, and is strongly

reticulated ; at its base in the centre is a shining area, broader than long, and with a

sharp straight keel down the middle. The pro- and mesopleure are strongly punctured ;

the metapleure reticulated, impunctate and depressed at the base. The petiole has

the apex punctured, black, and shining, the base being rufous and covered, like the

apex, with long white hair; at the apex it is twice the length it is at the base, but not

half the width of the second segment at the middle. The second segment is smooth

and impunctate, and is sparsely covered with long white hair; the other segments are

more thickly covered with similar hair, the hairs, too, being longer; the terminal

392 - HYMENOPTERA.

segment is rufous towards the apex and is densely covered with long white hair. The

underside of the petiole is ferruginous, sparsely covered with long white hair; the

centre is keeled, the sides grooved. The second ventral segment is black, very shining,

impunctate, sparsely covered with long white hair; the other ventral segments are also

black and more closely covered with longer white hair; the apex of the terminal

segment is depressed in the middle. The legs are black, covered with long white hair,

the tarsal joints piceous towards their apices; the long spur of the calcaria reaches

beyond the middle of the metatarsus. The radial cellule is more than twice the length

of the stigma; the radius is slightly oblique at the base, rounded at the apex; the

radial nervure commences at the middle of the stigma; the first cubital cellule is

acutely pointed at the base; the first (and only) recurrent nervure is received very

shortly in front of the middle of the cellule.

147. Spherophthalma facilis.

Long. 10 millim. ¢. |

Hab. Mexico, Northern Sonora (Morrison),

The head slightly narrower than the thorax, rounded behind, developed there nearly

the length of the eyes, rather thickly covered with long, pale fuscous, soft hair ; shining,

almost impunctate; the ocelli in a black patch, the hinder pair surrounded by a

furrow; the mandibles at the base bearing long white hair, the tips black. The

antenne are a little longer than the head and thorax united; the basal two joints clear

testaceous; the flagellum fuscous, paler and more testaceous in tint on the lower side,

covered with a very fine down and hardly tapering towards the apex; the third joint

slightly longer than the fourth and shorter than the first, which is a little curved and

sparsely covered with fuscous hair. The thorax is densely covered all over with long

pale hair; the mesonotum is sparsely, the scutellum more strongly punctured; the

lateral furrows on the mesonotum are distinct, moderately wide and deep, and reach to

the scutellum, which is not much narrowed towards the apex. The median segment

has a gradually rounded slope and has the hair longer than on the mesonotum ; it is

reticulated ; the basal central area is large, narrowed in front, broad and transverse at

the apex, and with an indistinct keel inside. The hair on the pleure is long and white.

The propleure rugose ; the mesopleure impunctate at the base, the remainder coarsely

punctured, running into reticulations; the metapleure hollowed, smooth, and impunc-

tate at the base, the rest reticulated. The petiole is nearly as long as the second

abdominal segment, narrow at the base, gradually dilated to the apex ; coarsely punc-

tured, sparsely covered with long white hair. The second and following abdominal

segments shining, impunctate, covered with long pale hair; the apices of the segments

fringed with depressed glistening white hair; the pygidial area covered with long white

hair. The ventral segments covered with long white hair, impunctate, except the petiole,

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SPH EROPHTHALMA. 393

which is coarsely punctured at the sides. The legs are covered with long white hair;

the anterior pair, and all the coxe and trochanters, testaceous, the middle and hind

pairs more or less blackish ; the calcaria pale testaceous, reaching a little beyond the

middle of the metatarsus. The wings hyaline, except a faint fuscous cloud below the

stigma; the nervures pale fuscous, lighter towards the base, the stigma much darker ;

the radial cellule a little longer than the stigma; the radius originates at the middle

of the stigma, its base slightly oblique, the apex curved; the first transverse cubital

nervure is curved and oblique, bullated on the lower part; the second transverse cubital

uervure is also curved, but is not so oblique, and is bullated at the top and bottom ;

the first (and only) recurrent nervure is received a little beyond the basal third of the

cellule; the transverse basal nervure is not quite interstitial.

Allied to S. damyrus, from which it may be known by the petiole being shorter and

broader towards the apex; the radial cellule shorter and broader; and the keels of the

reticulations on the median segment much weaker. It differs also from the other two

species of the group in having the wings spotted.

In the male genital organ the “ volsella” reaches near to the apex of the branch of the

forceps, which is acutely pointed and quite bare of pubescence; the volsella is broad

and bears long hairs on the inner side, the latter rough along the edge. In the male

genital organ of S. damyrus, the volsella does not reach to the middle of the branch of

the forceps.

The following species may represent the male of the genus Chyphotes, Blake, the female

of which (the only sex known to Blake) is apterous and has a long petiole, narrow at the

base and dilated at the apex, where it is almost confluent with the second segment.

The typical Chyphotes has the prothorax distinctly narrowed from the mesothorax.

The Mexican species has the narrowed basal part of the petiole as long as the dilated

apical part, the two together being distinctly longer than the second abdominal segment.

In our insect the prothorax is rounded at the sides, the apex being confluent with the

mesothorax at its apex and as wide as it; the mesonotum is without the parapsidal

furrows; the median segment is distinctly separated from the mesothorax, and is not

much shorter than it; the middle tibiz have two spurs (as in the typical species of

Chyphotes); the eyes are large, and nearly as long as the part of the head behind

them ; the antenne are longer than the head and thorax united, and not much narrowed

towards the apex; the ocelli are moderately large; the wings are short, not reaching

to the apex of the abdomen ; the stigma is much longer than usual in Spherophthalma,

and is as long as the radial cellule, which ends very shortly beyond its apex and

commences shortly in front of its base ; there are only two transverse cubital nervures,

the second being distinctly curved; the second recurrent nervure is received near the

middle of the cellule, the first close to the base.

BIOL. CENTR.-AMER., Hymenopt., Vol. II., December 1896. 3 EE

394 HYMENOPTERA.

In general appearance S. frugala resembles the species of the petiolated section of

the Photopsis-group of Spherophthalma, the coloration and general appearance being |

very similar; the petiole, however, is much wider towards the apex, the dilated apical

part, too, being more distinctly separated from the basal part. The radial cellule is

shorter compared to the stigma than in the typical species of Photopsis; the radial

nervure, too, in the latter extends much further beyond the apex of the cellule, usually

much more than the length of the stigma, while here it is received quite close to it.

I can see no trace of the third transverse cubital nervure in either of the specimens I

have examined ; so that if it is permanently absent our form differs both from Photopsis

and from the typical Spherophthalma in the second cubital cellule receiving both the

recurrent nervures. It cannot be referred to Brachycistis owing to the two spurs on

the middle tibie. |

148. Spherophthalma frugala.

Ferruginea, longe albo-hirta, pedibus pallide testaceis, femoribus posterioribus ex parte nigris; alis clare

hyalinis, apice fusco-maculato. gd.

Long. 15 millim.

Hab. Mexico, Northern Sonora (Morrison).

The head is almost as wide as the mesothorax, sparsely covered with long fuscous

soft hair, rather strongly punctured, but with all the punctures clearly separated from

each other; rounded and narrowed behind the eyes, the occiput not being transverse ;

the mandibles have the tips black, the space enclosed by the ocelli being also black.

The antenne are a little longer than the head and thorax united, moderately stout,

not attenuated towards the apex, the base pallid testaceous; the third joint distinctly

longer than the fourth. The thorax is punctured all over, the prothorax having the

punctures smaller and closer together; the mesonotal furrows are wide and deep; the

metathorax is elongated, has a gradually rounded slope, and is rather strongly reticu-

lated all over. The pro- and mesopleure are punctured, except the hinder edge of the

former, which is smooth and shining. The entire thorax is covered with long pale

fuscous hair. The abdomen is longer than the head and thorax united. The petiole

is longer than the second segment; closely and coarsely punctured all over and covered

with long pale fuscous hair; the dilated apical portion is somewhat longer than the

narrowed basal part; beneath it is covered with long pale fuscous hair, and the punc-

tuation is slightly stronger than it is above, the remaining segments are covered with

long pale hair; the second segment is shagreened, almost punctured; the other

segments are more shining and impunctate. The ventral segments, except the

second, which is punctured, are smooth and shining. The legs are covered with long

white soft hair, except towards the apices of the tarsi, where the hair is shorter,

sparser, and darker; the anterior femora bear no black; the four hinder femora have

SPH ZEROPHTHALMA.—BRACHYCISTIS. 395

more than the apical half black. The wings do not reach much beyond the apex of

the third abdominal segment; all the nervures, with the stigma, are pallid yellow; the

smoky cloud commences beyond the apex of the radial cellule, and extends to the

extreme apex of the wing, it being separated from the radial cellule by a clear hyaline

band ; the second recurrent nervure is received shortly before the middle of the cellule

in one of our examples, but not in another. Both the recurrent nervures are quite

distinct, but there is no trace of the third transverse cubital nervure. ‘The transverse

basal nervure is completely interstitial.

The colour of the body is variable, the hair also varying in being whiter in some

examples than in others; the apical cloud on the fore wings may also be darker and

larger; and the third abdominal segment may be for the greater part black.

S. (Photopsis) orizaba, Blake, agrees with the present species in having a cloud in

the wings, but among other points it may be separated by the median segment having

“three short, longitudinal carine not extending to the middle”; and the ventral

segments are described as “ polished,” instead of being strongly punctured as in our

species. In S. frugala, apart from the reticulations, there are no keels on the median

segment.

BRACHYCISTIS.

Brachycistis, Fox, Proc. Calif. Acad. Sci. (2) iv. p. 7 (1894).

Photopsis, Blake, Trans. Am. Ent. Soc. xiii. p. 257 (part.).

In general appearance the species of this genus resemble closely the Photopsis-

section of Spherophthalma, with which they were at first united by Blake. From these

they may be known by the middle tibia having only one spur. The second cubital

is narrowed at the top; in his generic definition, Fox (loc. cit.) describes it as usually

“triangular and sometimes petiolate.” In all the Central-American specimens I have

examined the second cubital cellule is certainly much narrowed at the top, on account of

the transverse cubital nervures converging there, but they do not meet, and in none of

them is it petiolate. The abdomen may have the petiole longer or shorter compared

to the second abdominal segment, and may be distinctly petiolated at the base; it may

be shorter than, or equal in length to, the second segment. ‘The appendicular cellule

at the end of the radial is seldom complete, its nervure in none of the specimens I have

seen reaching to the costa. The recurrent nervures are received by the second and

third cubital cellules, and one or other of them may show a tendency to become inter-

stitial with the transverse cubital nervures. There may be three or only two cubital

cellules. The species do not exhibit much sculpture; some of them have the hair on

the body long and thick, but still not thick enough to hide the colour or sculpture.

They are very uniform in coloration, being brownish, with black heads.

So far, we only know the males. The species are nocturnal in their habits, and,

according to Cockerell (Ent. News, 1885, p. 64), they come to light at night.

3 EE 2

396 HYMENOPTERA.

1. Brachycistis tysias.

Long. 14 millim. 6.

Hab. Mexico, Northern Sonora (Morrison).

The head as wide as the thorax, almost impunctate, in some specimens with a

few long pale hairs, rounded at the sides posteriorly, the space behind the eyes

not half their length ; deep black, shining, the face between and below the antenne

ferruginous; the mandibles ferruginous, the tips black; the clypeus is dilated in the

middle; behind the ocelli is a deep transverse furrow ; the eyes are margined behind.

The antenne reach slightly beyond the thorax; they taper towards the apex; the scape

has long white hair; the flagellum is glabrous; the third and fourth joints are sub-

equal. The pro- and mesonotum have longish soft pale hairs; shining and sparsely

punctured ; the lateral furrows on the mesonotum do not extend to the base; the

scutellum has a few punctures on the sides. The median segment is shining, slightly

shagreened; the apex somewhat oblique and covered with soft white hair, the basal

half being almost glabrous; at the base in the middle are two short furrows, which

unite at the apex and run into a furrow which proceeds down the centre to near the

apex of the segment. The propleure are punctured, except round the sides at the

base and apex; the mesopleure are still more strongly and closely punctured, except

at the apex, which bears hardly any punctures; the metapleure are slightly hollowed,

smooth, and impunctate, except at the apex. The petiole is as long as the second

segment, shining, covered with long white hair; the basal third narrowed, the

remaining part gradually thickened towards the apex and almost impunctate ; beneath

it is coarsely shagreened, the sides and the centre furrowed. The other abdominal

segments are smooth and shining, bearing long white hair, the hair becoming longer

and closer towards the apex. The apical ventral segments are more or less blackish.

The legs are of a nearly uniform rufous colour, except that the tibiz and tarsi may be

a little paler in tint; they bear long white hair. The wings hardly reach to the apex

of the abdomen, clear hyaline, except that beyond the radial cellule, along the costa,

there. is a faint narrow cloud; the stigma and the basal and radial nervures are black,

the other nervures paler; the base of the costa is white. The radial cellule is shorter

than the stigma; the basal abscissa of the radius curved, the apical abscissa straight

and with a short branch at its base; the transverse cubital nervures are pale and

bullated, the first and second nearly uniting at the top, the space bounded by them

being less than the space bounded by the first transverse cubital and the first recurrent

nervures; the first recurrent nervure is received in the basal third of the cellule, the

second near the middle; the transverse basal nervure is interstitial; the recurrent

nervures are curved, the second very pale.

BRACHYCISTIS. 397

2. Brachycistis dubitatus.

Long. 13 millim. ¢.

Hab. Mexico, Northern Sonora (Morrison).

The head is nearly as wide as the mesothorax, shining, impunctate, deep black, the

clypeus obscure testaceous, the mandibles piceous, black at the apex; covered with

white hair ; rounded behind, and developed there about one-third of the length of the

eyes; on the outside the ocelli are surrounded by a furrow, and there is a shallow

indistinct furrow joining the hinder pair behind. The antenne reach beyond the

apex of the thorax; the scape with some white hairs; the flagellum almost bare,

tapering a little towards the apex; the third and fourth joints subequal. The thorax

is shining, impunctate, sparsely covered with long soft white hair, the hair on the

scutellum longer than on the other parts; the lateral furrows on the mesonotum

narrow, but distinct; the scutellum very slightly narrowed towards the apex. The

median segment has a gradually rounded slope, shining, impunctate; the basal area

long, not very distinctly traced, the apex reaching nearly to the middle of the segment.

The pro- and mesopleure shining, punctured, but not strongly, the base and apex

impunctate; the metapleuree impunctate, except at the extreme apex. The petiole is

slightly longer than the second segment, gradually dilated to beyond the middle,

shining, impunctate, covered with long, soft, white hair; the other segments are

impunctate, sparsely covered (especially towards the apex) with long white hair; the

apical segment is broadly raised in the centre, the sides with large rounded or oval

punctures. The bottom of the petiole is bluntly keeled in the centre, covered with

some large punctures; the edges furrowed. The other ventral segments shining,

impunctate, sparsely covered with long pale hairs. The legs are sparsely covered with

long white hair, the hair being much shorter and closer on the tarsi; the spurs do not

reach to the middle of the metatarsus. The wings are shorter than the body, reaching

nearly to the apex of the fourth abdominal segment, clear hyaline; the stigma black ;

the nervures blackish at the base of the wings, much paler towards the apex; the

radial cellule wide, shorter than the stigma; the basal abscissa of the radius oblique,

issuing a little beyond the middle of the stigma, the apical abscissa straight and paler

in colour; the transverse basal nervure interstitial; at the top, the first and second

transverse cubital nervures almost unite; the first recurrent nervure received near the

basal third of the cellule, the second near the middle.

8. Brachycistis vigilax.

Long. fere 12 millim. 6.

Hab. Mexico, Northern Sonora (Morrison).

The head black, the apex of the clypeus and the mandibles piceous, the latter

398 HYMENOPTERA.

black at the tip; shining, sparsely covered with long soft fuscous hair, the mandibles

at the base bearing long pale fulvous hair; rounded at the sides behind, and there

not one-fourth of the length of the eyes. ‘The ocellar region not much raised; a deep

furrow surrounding the anterior ocellus; the posterior ocelli united by a shallow

indistinct furrow. The antenne reaching beyond the apex of the petiole, not tapering

much towards the apex; the flagellum almost bare; the scape with fuscous hair; the

third and fourth joints subequal. The pro- and mesothorax rather densely covered with

long pale hair, shining, almost impunctate; the propleure rough in front, smooth

behind ; the greater part of the hinder metapleure impunctate. The lateral furrows on

the mesonotum are distinct and reach nearly to the base, but are clearly separated from

it. The scutellum is smooth and shining, almost without punctures, hardly narrowed

behind, and bearing long fuscous hair. The median segment has at the apex a rather

abrupt slope; shining, impunctate ; the base almost glabrous, the rest sparsely covered

with long fuscous hair; at the base, in the centre, there is an indistinct narrow

depression pointed at the apex. The petiole is as long as the second segment,

narrowed at the base, gradually dilated towards the apex ; sparsely covered with long

soft fuscous hair; almost impunctate; in the middle there is a shallow indistinct

furrow. The other dorsal segments are smooth and shining, covered, especially at the

sides, with long, soft, pale fulvous hair; at the apex the terminal segment has a broad

rounded keel in the middle, the sides being depressed. The basal ventral segment is

flat; a deep furrow down the centre; the edges are also furrowed on the inner side,

the outer edge being sharply keeled. The other ventral segments are, for the greater

part, blackish, smooth, sparsely covered with long soft fuscous hair. The legs are

sparsely covered with white hair; the femora are darker and more rufous in tint than

the tibie; the tarsi are without black. The wings reach nearly to the apex of the

abdomen ; clear hyaline, the stigma fuscous, darker at the apex. The radial cellule is

shorter than the stigma, the transverse radial issuing from beyond its middle; it is

wide and rounded at the apex and from the radius issues at its bottom a short branch.

The second cubital cellule is narrow, triangular, and oblique; the third is wide and

much longer than it—at the apex it is wider than it is at the base. The first recurrent

nervure is received in the basal third of the cellule; the second is received shortly

before the middle of the cellule; the cubitus is obsolete beyond the second transverse

cubital nervure ; the transverse basal nervure is interstitial ; the first transverse cubital

nervure is straight.

Allied to B. fulvilabris, but a little stouter and more pilose; the antenne are darker

and more slender; the area at the base of the median segment is distinctly developed,

and the apex of the segment has a much more abrupt slope; the third cubital cellule

is longer compared to the second; the radius at the second cubital cellule is oblique

and quite straight, not curved as in B. fulvilabris.

BRACHYCISTIS. 399

4. Brachycistis fulvilabris.

Long. 11 millim. ¢.

Hab. Mexico, Northern Sonora (Morrison).

The head is as wide as the thorax, shining, impunctate, rounded behind and there

not half the length of the eyes; the front and vertex with some long pale soft hairs.

The front is raised where the large piceous ocelli are placed ; there is a distinct furrow

surrounding the anterior ocellus, and the hinder pair of ocelli are connected by a narrow

straight furrow. The mandibles are rufo-testaceous, the tips black. The clypeus is

dull ferruginous. The antenne reach to the middle of the abdomen; they taper slightly

towards the apex; the scape has a few long pale hairs; the flagellum is almost

glabrous; the third joint is a very little longer than the fourth, and as long as the

basal two joints united. The thorax bears long, soft, white hair; the base of the median

segment is almost glabrous, the other part having the hair longer than on the meso-

notum. The mesonotum has a few indistinct punctures; the scutellum has the

punctures larger and much more distinct; the punctures on the apex of the median

segment are indistinct, giving the surface merely a roughened appearance. The

pleure are shining; the propleure are a little hollowed and impunctate; the meso-

pleurz are indistinctly punctured, the punctures wide apart; the apex only of the

metapleure is punctured, the punctures, however, not being very distinct. ‘The median

segment has a gradually rounded slope. The abdomen is longer than the head and

thorax united, shining, impunctate. The petiole is longer than the second segment,

narrowed at the base, gradually dilated towards the apex ; beneath, it is flat; the

surface rough, and covered with long white hair; the sides furrowed and depressed at

the edges. The dorsal segments are shining, sparsely haired, the hairs becoming

thicker together and longer on the apical segments. The ventral segments are shining,

more or less fuscous in colour, sparsely covered with long pale hair, which has a slight

fulvous tinge. The legs are covered with long, pale, soft hair; the anterior legs are

paler, wanting the fulvous tinge, except on the coxe, the tibie being especially pale ;

the hind tarsi are slightly darkened towards the apices of the joints. The wings are

clear hyaline; the stigma is dark fuscous, paler towards the apex. The transverse

radial nervure originates beyond the middle of the stigma, and is united to the second

transverse cubital. The second cubital cellule is not triangular at the base, the upper

nervure being rounded at its base, thus making the base of the cellule rounded, not

acute; the first recurrent nervure is received quite close to the base of the céllule,

almost joining it; the second recurrent nervure is received very shortly before the

middle of the cellule; the cubital nervure ends at the third transverse cubital nervure.

The radial nervure terminates in a short branch after it turns up to the costa.

400 HYMENOPTERA.

5. Brachycistis sciron.

Long. fere 14 millim. <¢.

Hab. Mexico, Northern Sonora (Morrison).

The head black, the mouth and mandibles piceous, their apices blackish; shining,

impunctate, sparsely covered with long, pale, fuscous hair; behind the eyes the head is

rounded and not half their length there; the ocelli not much raised, surrounded by a

depression, a straight indistinct furrow uniting the posterior pair. The antenne

reach to near the middle of the second abdominal segment; the scape has a few white

hairs; the flagellum is almost glabrous; the third joint is longer than the basal two

joints united ; the third and fourth joints are subequal. The thorax is sparsely covered

with long white hair; the pronotum is closely punctured; the mesonotum is blackish

impunctate, covered with long white hair; the furrow at its base is wide and deep.

The median segment is covered with long white hair; the apex hasa rather abrupt

slope, rounded at the top; the base is shagreened ; in the centre at the base are two

narrow keels, converging towards the apex, and outside these is an indistinct keel.

The pleuree are covered with long, soft, white hair. The pro- and mesopleure are

somewhat strongly punctured to near the apex, except the latter behind. The sternum

is impunctate. The metapleure are impunctate, except at the apex; there is an oblique:

not very distinct depression at the base, narrowed towards the apex, and reaching a

little beyond the middle of the segment. The abdomen is distinctly longer than the

head and thorax united, shining, impunctate, covered with long, soft, plae yellowish

hair. The petiole is longer than the second segment, much narrowed at the base,

gradually dilated towards the apex; beneath, it is shagreened, the sides with a few

punctures, and down the centre towards the apex are two indistinct keels. ‘The

other dorsal segments are shining and impunctate; covered, but not thickly, and

especially towards the apices, with long pale hair. The apical.half of the terminal

segment is somewhat coarsely punctured, margined, and slightly depressed. The legs

are coloured like the thorax, except that the anterior pair are paler and more yellowish

in tint; covered with long white hair; the apices of the hinder tarsal joints fuscous.

The wings reach near to the apex of the abdomen, clear hyaline; the stigma deep

black, paler at the extreme apex; the nervures fuscous, paler towards the apex. The

radial cellule is wide, shorter than the stigma, originating a little beyond the middle

of it; the basal and apical abscisse oblique. The first transverse cubital nervure is

curved towards the base, the third towards the top; the first recurrent nervure is

received at the base a little more than the length of the second cubital cellule at the

top; the second recurrent nervure is received very shortly beyond the middle of the

cellule. ‘The cubital nervure does not extend beyond the apex of the third cubital

cellule.

BRACHYCISTIS. 401

B. tysias approaches this species; but it is larger, and has the antenne shorter

and stouter, and the body more pilose; the petiole is longer and much more deeply

furrowed down the centre, especially towards the middle; the furrow behind the

ocelli is wider and deeper; the furrows on the mesonotum are deeper; the area on the

base of the median segment is shorter; the basal narrowed part of the petiole is

longer, and it has a distinct longitudinal furrow, which extends near to the apex, the

apical half is much more strongly punctured, and the hair is longer and thicker; the

mesopleure are much more strongly punctured, the metapleure more deeply and

widely excavated. |

6. Brachycistis arines.

Ferrugineus, capite nigro, abdominis apice fusco, antennis testaceis; pedibus pallide testaceis, femoribus

posticis fuscis ; alis hyalinis, nervis pallidis, stigmate fusco. <.

Long. 10 millim.

Hab. Mexico, Northern Sonora (Morrison).

The head is somewhat narrower than the mesothorax, black, shining, very sparsely

haired ; abruptly narrowed behind the eyes; the anterior ocellus with a semicircular

furrow in front, and from this furrow runs a short sharp keel; the clypeus and mandibles

are ferruginous, the tips of the latter black. The antenne are longer than the head,

_ thorax, and petiole united, very little attenuated towards the apex; the third joint

hardly longer than the fourth; the apical joints slightly dilated on the underside.

The thorax is sparsely covered with short white hair; smooth, impunctate; the para-

psidal furrows reaching near to the base of the mesonotum; the scutellum smooth,

impunctate, glabrous, the furrow at its base deep. The median segment has a gradually

rounded slope, impunctate, with carine or reticulations. The pro- and mesopleure

are impunctate, sparsely covered with soft white hair; the base of the metapleure is

smooth, shining, and impunctate, its apex closely punctured. The petiole is somewhat

longer than the second segment and is gradually dilated towards the apex; it bears

long fuscous hair and is obscurely punctured at the apex; its lateral keel is distinct.

The other dorsal segments are impunctate, shining, for the greater part black, and are

sparsely covered with long white hair. The legs are testaceous, covered with long

white hair, the femora more or less fuscous. The wings reach beyond the apex of the

abdomen ; the radial cellule is shorter than the stigma; the basal abscissa of the radius

is oblique, the apical abscissa curved and emitting a short branch; the second cubital

cellule is much narrowed at the top, the first and second transverse cubital nervures

converging there; the first recurrent nervure is received in the basal third of the

cellule, the second almost in the middle of the cellule ; the transverse basal nervure is

interstitial.

BIOL. CENTR.-AMER., Hymenopt., Vol. II., February 1899. 3 FF

402 HYMENOPTERA.

7. Brachycistis exornatus.

Ferrugineus, longe albo-hirtus, antennis pedibusque pallide flavis ; alis hyalinis, nervis pallide flavis, stigmate

fusco. o. .

Long. 7 millim.

Hab. Mexico, Northern Sonora (Morrison).

The head is not much, but still distinctly, narrower than the mesothorax, narrowed

and rounded behind the eyes; smooth, shining, impunctate, somewhat sparsely covered

with long white hair; the ocelli in a black patch, a deep curved furrow immediately

in front of them; the oral region and mandibles paler, the tips of the latter black.

The mesonotum impunctate, covered with long pale hair, the parapsidal furrows

commencing shortly behind its centre. The scutellum coarsely punctured, and with two

keels down it outside the centre. The median segment has a gradually rounded slope ;

it is strongly reticulated, except in the centre, the centre being smooth and marked

with three straight keels which reach near to the middle of the segment. The pro-

pleurze are reticulated; the mesopleure are coarsely reticulated, the reticulations

running into punctures ; the metapleure are reticulated like the mesonotum, but with

the reticulations, if anything, larger, the base smooth and shining and a little exca-

vated.. The abdomen is not much longer than the head and thorax united, and

covered with long fuscous hair. The petiole is not much shorter than the second

segment, narrowed towards the base, the apex punctured. The other segments have

no punctures, and are covered with long pale hairs; the terminal segment is of a paler

yellow tint and without punctures. The ventral segments are covered with long white

hair. The legs are covered with long white hair, and are of an almost unicolorous

pale yellow. The radial cellule is distinctly longer than the stigma, its apex acutely

pointed ; the second cubital cellule is narrowed at the top, being there not much broader

than the space bounded by the first transverse cubital and the first recurrent nervures ;

the third transverse cubital and the second recurrent nervures are obliterated ; the

transverse basal nervure is interstitial.

SUPPLEMENT.

TuE following species of Sphegide, Bembicide, Pompilide, and Mutillide have been

described by me since the publication of the preceding pages. ' ;

PODIUM (p. 26).

| 6. Podium crassipes.

Podium crassipes, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 368 (1897) '.

Hab. Mexico, Omealca, near Orizaba (M. Trujillo 1).

SPHEX (p. 29).

17. Sphex (Priononyx) laerma.

Spheax (Priononyx) laerma, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 870 (1897) am

Hab. Mexico, R. Papagaio in Guerrero 1200 feet (H. H. Smith).

BEMBIDULA (p. 95).

7. Bembidula affinis.

Bembidula affinis, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 371 (1897) *.

Hab. Mexico, Dos Arroyos in Guerrero (H. H. Smith").

PSEUDAGENIA (p. 161).

29. Pseudagenia tarsalis.

Pseudagenia tarsalis, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 372 (1897) -

Hab. Guatemaa, Purula in Vera Paz (Champion ').

SALIUS (p. 173).

6 (a). Salius incomptus.

Salius incomptus, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 372 (1897) *.

Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith’).

19 (a). Salius imitatrix,

Salius imitatrix, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 378 (1897).

Hab. Mzxico, Cuernavaca in Morelos (H. H. Smith 1).

404 SUPPLEMENT.

POMPILUS (p. 185).

65. Pompilus ceres.

Pompilus ceres, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 374 (1897) '.

Hab. Panama (Boucard ').

66. Pompilus rinconensis.

Pompilus rinconensis, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 875 (1897) °.

Hab. Mexico, Rincon and Iguala in Guerrero (H. H. Smith ?).

67. Pompilus idris.

Pompilus idris, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 375 (1897) °.

Hab, Mexico, Atoyac in Vera Cruz (H. H. Smith +).

SPH ROPHTHAIMA (p. 313).

149. Spherophthalma posticata.

Spherophthalma posticata, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 376 (1897) '.

Hab. Mexico, Chilpancingo in Guerrero (Hége 1).

150. Spherophthalma latebalteata. |

Spherophthalma latebalteata, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 377 (1897) ’.

Hab. Mexico, Cordova and Jalapa (Hége 1).

151. Spherophthalma chiron.

Spherophthalma chiron, Camer. Ann. & Mag. Nat. Hist. (6) xix. p. 378 (1897) *.

Hab. Mexico, Venta de Zopilote (H. H. Smith 1), Acapulco (Hoge 1).

152. Spherophthalma myrmiciformis.

Spherophthalma myrmiciformis, Camer. Aun. & Mag. Nat. Hist. (6) xix. p. 378 (1897) *.

Hab. Panama, Bugaba (Champion }).

INDEX.

| 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

Acanthostethus .....0. 000000. 70

Agama ...... cece eee ce ee ees 374.

OVUADA oo ceeccccccecens 375

Agenia ...... Cece e eee e tees 161

ARUTED evi cu eee eenenee 167

——- C@rulipes oo. ec ce scenes 167

CAICATALA voce cece eens 164

—— MEXICANA Lovee ceccecees 163

—— montezumia oo... cceeee 163

—— orbiculata .....6. 665. ».. 171

SUDVITESCENS 2... c.eceeee 168

ALYSON ..... bocce cece eeeees 70

melleus ..........0 ce eee 7

AMMOPHILA ....cceeceeeeeee 3

— Ammophila vice ccece cc eeee 260

alpestris ...........05. 21

alticola ......... ccc cues 10

LAX {a 18

argentifrons ............ 23

AtTICEPS 6... Lecce ee eee 16

aureo-notata........6+.. 7

aureo-notata....... veees 3,8

—— aZtECA 6. eee cece e ees 17

GREECE vee cece we... 15,16

barbata ........... eee 7

—— barbata ... cece cece cvees 8

breviceps ...........04, 19

breniceps ........ peewee 20

centralis ............-. 6

COTES Loci cece eee 8

—— championi......... reeee QO

—— chiriquensis ............ 18

ChATIQUENSIS Woe c eve eeees 10

comanche ...........+.. 19

CODSOPS ... cece eect wees 12

——— COTA iccccccvcccceane 14

—— dejecta .......ceee scene 14

—— fragilis .............0.. 15

Sragilis occcecccccees ». 16

—— gaumeri ............4- 4

——— JAUME eve ccccrevcces 6

gracilis ........ eee ceeee 16

—— heydenti. occ cccceeecves 260

Ammophila iridipennis

wridipennis..... 14+ eee

JASON oe eee ee cee eee

luctuosa

——— MEXICANA voc icccreccees

—— MICANS ... eee eee eee eee

—— miliaris...............0.

—_ miliaris ........ ete eeeee

—— montana

— montezuma ............

MOITISON] ......... 00 ee

—— nigro-cerulea ..........

piceiventris ............

—— piceiventris

picipes

quadridentata

SONOTENSIS........0 000s

strenua .

striolata

ear ene e sen eeeveos

re ee Y

VATIPES 2... cece eee eee

voleanica ....... eee eee

xanthoptera .........46.

AMPULEX 1... sce ceeeeeees

angusticollis............

—— faSCIALA Leen eee

AMPULICIDA

Anthophilus oo. .cceccccccees

VETUUALTIS 6. vce e ce ennee

APHILANTHOPS

—— marginipemnis ..........

punctifrons

Apis surinamensis

vespiformis

Aporus

ASTATA ... cc cece cee ences

—— albovillosa

—— albovillosa ....ceecceenee

—— alpestris

—— apicipennis

COPULED . cee ccc ceeeceees

CO ee

CC ee ey

eee esrereveree

4,6

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

Page

Astata mexicana ..... seveeee 69

picta ........006. seeeee 68

strigosa...... sees vee. 65

SULUGOSA voce cescess ee. 66

tinctipennis ......: 2666. 67

ASlALUS Coc cca c eee cnee 65

PUCtUS ve vacecceeveeees 68

strigosus ..... sac eeeeee 65

Bembecinus ....sscveees 101, 102

BEMBEX..... 00. e cece eee eee 100

Bembex® oo. csc cevccevccee 92, 97

CURUEA voce cece nce cceas 101

CONLINUA vec receceveaes 98

REPOS Coc cece ween eees 98

longirostra oo. essen 92

—— maculata .iccrcaccccees 99

——— MMA... cee eee eee 101

— monodonta ........ ... LOL

—— multipicta.............. 100

nubilipennis ............ 101

—— pallidipicta ......... ».. 101

——- punctala vic cecscecaces 99

SUGNAED wo carvvcsceucces 99

SEPUATA vce cas anees ... 99

VATIEGATA vice cvaccveees 96

BEMBICIDE ...... cece ce eee 91

BEMBIDULA .....eeseeee 95, 403

Bembidula vo ccc ccc cea ewan 92

AMIS . cee e cee ewes 403

burmeisteri ............ 96

—— burmeistert ......cceeee 97

capnoptera ...... sv eeee 96

diodonta ......eeceeees 95

GisCi8A we sc eee eevee 95

fodiens ...... veeseeeeee 97

——— variegata ..........006. 96

viduata ........ cee eee 96

Bembyi viccccccccnvcccceues 100

——— uncEALA eee ceccceeee _ 99

BUGNAEA voc ees c ce nnceeee 99

Bombus oo. sce ceeccccascaes 260

BoTHYNOSTETHUS ...... wee. 70

406

Page |

Bothynostethus saussurei .... 70

BRACHYCISTIS ....ece veces 395

Brachycistis ...... .. 374, 875, 394

AYINES woe eee eee eens 401

—— dubitatus .............- 397

———— OXOMMAtUS ... cece eee eee A402

—— fulvilabris.............. 399

—— fulvtlabris oc ccvccececees 398

SCHON Lecce eee eee eee 400

—— tysiaS ..... eee e eee 396

—— EYBIAB err ccsseecceeee 401

vigilax ........ sec eeee 397

CALICURGUS ....0-. eee reece 215

rhodogaster ..........6. 215

CAMPSOMETIS 66s cg ecceecacres 226

COSANS Lo. cece eeeeeeee 229

Ayana oi cviccsecvvcces 228

Ceratocolus......ssecececaces 141

CHRCERIS ... eee eee weeee. 107

Cercerts wee c cece eeeeces 104, 130

acolhua..........0000-. 124

—— aureo-facialis .......... 112

——- AZTECA occ eee ee ence eee 125

—— bicornuta ...........08. 127

binodis ..........6,..... 107

—— bothriophora .......... 127

—— chiriquensis ............ 114

CRITiQuenstS ...s.seeeeee 109

chrysogastra...... sees 127

—— curvicornis ............ 124

—— erythropoda......... ».. 126

CGAL Loe cece eee ee eees 123

OXSECTA oc cere ee ee eens 123

feralis J... cc eee cece 113

flavida ........ eee ee eee 116

—— flavo-maculata.......... 115

—— geniculata.............. 118

—— graphica .............. 129

hebes...... cece ee eee ee 124

—— huastecee ........00. cee 118

— imperialis............55 122

——— Impertahts ... ce ceeeceeee 123

marginata...........66- 117

MAYGINALA occ cece vceee 116

— maximiliani ............ 111

MALIMUUANE oo cee ecaccee 113

mexicana ...........46. 117

MEXICANA ..vecesecscees 118

—— montezuma ............ 108

—— montivaga ..........6. 119

——— MONLVAGA ve esecescaee 120

obsoleta .............. 118

Obsoleta ... cece eee 119, 121

OtOMIA 6... .. cece ee eee 116

OCOMIA vevceesvcace .... 117

INDEX.

Page

Cerceris pilosa ............+- 128

rostrata ....... beet e eae 127

scapularis ...........085 129

semipetiolata .......... 118

semipetiolata ...... 109, 122

simulans ...... sect eeee 108

SUMUIANS cecvcccccccaee 127

—— smithiana............6. 119

SONOFEDSIS ...... eee cece 129

StVIQOSA... cee eee eee 110

subpetiolata .......... .. 120

tepaneca ..........006. 125

—— thermophila ,........... 129

—— tolteca ........ cece eee 109

trichiosoma ............ 127

truncata ....... eee eee 121

CLUNCALA acc cacccecees 122

ZApOteCA woe eee eeereeee 118

CEROPALES ....-0....00005- 158

——agilis........esee00.... 158

albopicta ......seeeeees 158

—— apicipennis ............ 161

AZTECA oie ee eee eee eae 159

—— chiriquensis ............ 160

CRU IQUENSIS Wo vce e eevee 161

femoralis ......02ce00e- 159

fumipennis ............ 160

INLEVTUPLA. . os ceveceaes 208

MEXICANA 0... eee ee ee eee 159

MELICONA cecvecacsccces 160

CHALYBION .....eceeeeeeeee 25

Chalybion ..ccccccccccevcuee 23

——aztecum ........00.05- 25

— ceruleum........ seca 25

——— CANfOrNICUM oo cc cevaces 25

— zimmermanni .......... 25

ZUMLMETMENNE ..ccvecaes 26

CALOLION 6. cc cece cee a eens 29

angusticolle ....eecseees 37

CAVUMCUMN oo cece cece cae 29

COMPTESSUM ..ceereacces 37

—— CYANEUM ee veraceceres 29

Chyphotes .....ceeceeees 374, 393

COlpa oo ccc ccc ceeseeceecs 226

Aexandrt oo. ccececcces 233

—— ABTAEA dr cccccccccnnes 227

—— bistrimacula ..... cece ces 229

FOSSUIANG vescacccccces 231

TUBVIDG voce c cece cccees 230

VATUEGALA oo ec cseaes oes. 229

CRABRO..... sec ee cee eeeees 141

alpestYiS ......... e008. 152

AIPeSEVIS veevcsascanees 142

alticola ......ecccceeees 152

——- alticola occ eevee ceeene 142

ariel swe e ence eeccceecs 147

Page

Crabro ariel... ccc cccececee 142

atitlane ....... ta neeee 143

atitlan® ..vccscccecess 141

centralis .............. 146

—— centralis ..iccccccecces 142

—— championi.............. 142

—— championt...........05 14]

—— constances .........6.. 149

——— CONSEANCEE occ vceeee . 142

—— costaricensi§S............ 148

—— COSLATICENSIS oo... ceceees 142.

— fulvo-hirtus ............ 158

—— fulvo-hirtus ......e.cee. 142

guerrerensis .......... -. 150

QuerrerensisS ........ 142, 146

—— hector .......... weeeee 147

hector vec eee cenevcces 142

JASON Levee eee ee eee 155

JASON oo ccc v cece en raves 142

—— maculitarsis ............ 154

—— maculttarsts .....ceecces 142

—— montezuma ..... Seen 151

———— MONTEZUMA vec ecscceres 142

—— montivagus ............ 145

—— MONLIVAGUS oer aesvcaee 142

—— peltista .............04. 153

peltista oo... .cccceeeeee 142

saxatilis ............0. 142

savatilis .....6 Cee eees 141

—— SONOPENSIS........0000e- 144

SONOPENSIS ......006 seee. 142

—— yucatanensis............ 150

—— YUCALANENSIS 6. een aes 142

CRABRONIDE ....cceeeeeees 141

CRABRONINE ...eeceeeeaeee 141

CYOSSOCETUS. . 6c eee cee cece 141

Diamma spinole .........00 107

Delis vec cccccececcencees 226

Diesmus spinole .......00.00- 107

Discolia .. 6. ccc ccc cece ees 223

Edrionotus... 0... cece eee 261, 376

ELIS 2... ccc cee ee eee eee 226

Ellis... cece 222, 223, 233

albofimbriata .......... 229

AMETICANG oc cccaceccaes 225

-—— atrata ......00... wee. 227

costalis ....... seve eeee 229

Gorsata ..s.. cece cece ees 230

—— ephippium.............. 230

—— fallax cccicsccccvveces 228

fossuland 6. cseveceecers 231

—— hyalina ......cceee eens 228

—— hyalina oo... ccccceveees 229

lativentrts vcececereceses 229

INDEX. | 4U7

Page Page Page

Elis limosa.............000.. 234 | Gorytes championi .......... 72 | Lestiphorus..... beeen ee eeeee 7]

—— Mexicana .............. 232 fasciatipennis .......... 75 bipunctatus ...seeeeeeee TL

POVEGVING wesecccseveeee 228 flQVICOYNIS oe eee eee Bl | Liacos. sc cece eee eee eees 233

—— plumipes ...........0.- 231 | —— fulvipennis .........00- BL | Lyrops vic ccceccneeeeeeenes 59

—— plumipes .ivceccccceaes 233 fuscipennis ............ 79

YEQINA Lee eeeeeeees wee. 228 fuscipennis .......... 82,83 | MELLINUS.......... esceeees 85

SCLCINCLA ves secrsceeecs 251 | ——fuscus ..........eeeeee 72 | Mellnus............ wa ereeee 86

———= thoracicd . ose. ceccceees 233 ——— fUSCUS eee cceeccecneee 73 alpestris .... cece eee ees 85

Loltecd vi cece eee newness 230 hamatus wivccscvcceaes 75 ANVENSIS eee ceeeeeceees 8D

——- tricincta ...........0-- 234 —— handlirschi ............ 78 pygmseus ....,....0.66. 89

—— trifasciata .............. 233 | —— lateritius .............. 77 | Meria collaris ......... wees 251

trifasciata... cece cece eee 234 — maculipennis .......... 73 | Muicrobembex monodonta ...... 101

——— variegata ........eee eee 229 —— mexicanus ............ 76 | MIMESA ..... cee cee ee ee eee 134

—— vitripennis ............ 227 —— ModestuS .ecesvccaceces 81 Mimesa ...... cece eeeeee 86, 189

WUELALA Coe ceveeceees .. 927 | ——montanus.............. 77 claviventris ......... ... 139

WAGNETIANA ..cceeeseees 230 | ——notabilis .............. 8] longiventris ........ wees 187

EXPIPOMPILUS .......e000085 214 —— phaleratus.............. 81 MEXICANA ...... cee ee ees 134

maximiliani .........00: 214 —— phaleratus cc. ccc ccccees 80 —— montezuma ......-+..05 138

HEPOMIDIOPTERON .........4. 235 ——- punctifrons ............ 74 —— monticola ............6. 137

Epomidiopteron...... 238, 245, 246 —— punctifrons ......ceeeee 75 Monticola ....csecees ... 188

aureo-hirtum .......4.. 235 ——robustus ...... se neeeee 73 | ——pulchra................ 135

—— canaliculatum .......... 237 —— rubiginosus ............ 77 striolata ..... eee ee eee 136

—— elegantulum............ 236 | —— rufo-luteus .........005 81 | MIMESIDH............ cece 134

eels 1) 7) ae 235, 236 —— SEFICALUS Levee cccveeees 73 MONEDULA oo... cece cece eee 97

—— NigrUM ...... ee eee eee ee 236 | —— spilopterus ............ 77 | Monedula....... cece eee 92, 95, 98

MUGTUM wocececvecevcees 937 — splendidus.............. 84 CONLNUA vo ese e sce veeee 99

vufitarse ... cece cece eee 238 —— splendidus... cscececess 85 GUSCISA vc cee cee cence 95

SAUSSULEL . 1... eee eee ees 239 VEDUStUS oo... eee eee 77 AUSSECHA vies eevveecvvcee 96

smithi ....... cc ee eee 236 VESPOIdES ....erevene .. 72 GIVES oe eee eee eee 100

sumichrasti .........+.. 235 Her0S 0.6... cece eee eee 98

—— sumichrastt ......ceeeee 239 Halictus oo. eee eee w eens 260 | —— maculata .............. 99

EVUCERCERIS ....cccccceeenees 180 Harpactopus cette eee ene enee 29 MCXICADA 2... cece eee e eee 100

cerceriformis .......... 130 Harpactus oi. cece cecccenes 71 ——— montezwMa ......605. 92, 94

EUSPONGUS Cece c cece ee ee eee 71 | Hemipepsis ......- 660. 173, 215 punctata ce. .sseecee. 99

bipunctatus .....6...05- 71 |. USCULALA. 6 ev cece veneees 184 SEVICED vee veveevceeuves 96

, TTogardia vic scvevececvecees 91 Signata ......eeeeeeeees 99

SPOCIOS wc ececvcrecnecs 91 SIUNOSA ove veecneccceees 96

Ferreolt ss. sees eee ee ees 186 HToplisus occ cca cece encees 71 — riata Lun ee eee neta 99

AZEECH vee esvrceeennees 189 . . ;

anthracipennellus ......4+ 73 surinamensis............ 98

FOYMOSH. oc cence ccaes 189. .

_ levifrons ....---.. 189 CAYENNENSIS 6. ec eeeeee 73 Moritia cece cece eee e renee 261

J JUSCUS Lecce ccc eeecneee 73 Mutilla ...... 259, 260, 289, 293,

VAPUEGAEM esses eevee 188 ETyponysson oie ceseccvcvcnes 70 295, 298, 313

BVOlA 2... eee ee eee 285

GORYTES 0.6... . cscs e eee ees 71 | Isodontia ....... 6.0 29, 30, 35 amulee ......ce eee eeees 277

GOrytes oo. cerceccnerncees 83, 86 philadelphica ......006. 35 AMUA icscceecees 278, 280

wequalis ........c cece ees 77 —- andreniformis .........6- 374

alpestris ....-..e eee eee 83 LARRA ........... bene eens 49 ANLIGUENSIS ...ceeeseces 363

alticola ......... eee eee 81 DAV ccc e cece cee 51, 59, 101 apicdlata . oc sec cee eeeee 374

alticola .......6e scene 82, 83 AGUS vo cece ccc vnecees 102 approximata............ 303

Gpicalis vo. cece ecccceaee 81 anathema .....4.. eevee 260 | —— approximata..........ee 299

balteatus ...........0.. 80 godmani ....... cece eee 49 arachnowdes ......4. see. B00

—— bipunctatus ............ 71 moneduloides ....ss.eee 104 GYANCOLES oes ve eues 358

—— bipunctatus oi... cseeee 72 rufitarsis ..........000 50 aTdenS ....e cece eee eeee 286

cayennensis ............ 73 SONOTENSIS... 6.60... eee 50 AVUCNS oe cece cece eens 287

centralis ........e.eee- 84 Darrada i. vicccccceveces 49, 51 arguta ..... eee ee eee ee 262

centralis ...+sseeeeeee. 85 | LARRIDE...... wees eeeeee 38 astuta ve. eeee eee cease 311

408

. Page

Mutilla astuta ...... see e eee 807

AUIUPCS wiveesevceececes 323

ARLECH vseves Cece ee eee 374

—— belti .... cece eee eee eee 265

—— belus........ cece eee 802

DelUus wii vecccceeves 299, 303

—— bisignata ....ccccseeees 323

blandina ...... Arana 317

——blakei ....... eeceeeees BLO

—— blaket. oc. ceeees 307, 818

bugabensis ............ 299

bugabensis...... Seen 301

CANINA viccecccnvenaees 363

——— COTA. cece cccevcees 316

—— CATAINGMS 6. vec e eee eeee 364

—— Catriona. ........ eee eee 309

CALTIONA cece ceceees 308, 310 -

centralis ........-.006. 271

— centralis ...... 272, 278, 275

—— championi............ .. 296

CHAMPION ove cverveceees 297

ChIAPA oececccacccceee 323

—— chiriquensis ............ 301

CRAVUQUENSIS 6. coc eeeees 299

—chroma....... ceceeeees 291

chroma ...... seeeee 290, 295

CINAION . 1.0008 sececes. 298

—clonia ........eee ee eee 272

—clutha ................ 283

COCCINED. cece eve v ene 260

COMOUSLA Loc icvecereecs 363

CODLUSA 6... ce eee eee e eee 268

——— COMTEX. cee ee cence 279

CONNMELD vevvccvesvcvcees 268

COTONAEA wevseccveceass 260

CTOSUS veecacccececaaee 316

—— CFUCIALA.. eee eee enes 823

——— culta ... cee eee ees 305

culta ...... eee e eee eeee 311

—cyllene .............. .. 266

CYUENE vivivaccevesvaes 259

——— CYTA vere vevcrvvvececes 263

CYTA vvvvvcveceeves 268, 270

—— deedala ...... ss eeeeeeee 269

derelictd ..cccceveceees 845

AUfferens ve vcrccvecuee 260

—— ducalis ...cccerccvvcees 345

—— OXACHA occ ereceeeeeeee 278

CLAEA veveceecas seseee 280

SETIUGINED. ca cccevecvees 324

FOYTETL vp. eee e ee eee ace 290

fOrrert vi ccecccnveeeens 291

—— fulviventris ............ 286

—— fulviventris .occecsseees 287

GADD ee ccceccceueeee 317

gaumeri ..... po eeceeee 276

INDEX.

Page

Mutilla gloriosa..... 0. cece ees 359

GOERICA wicsvcecesvseees 323

gracilis ..........600- .. 313

hecate ...cccscceeceees 364

—— herberti.........6. .. 2+. 808

—— herbertr 310, 811, 312, 318

hOgei...... eee s eee eee 274

11 275, 276

idiasta ........ eee eee 312,

UALASTA occ ecceveceeee 308

impudica ........+-0e6- 270

tncompletd...ceccrsecaes 260

TAP vee evceeeeees 374

UUCAL ve ec ee cc eeeeees 823

—— klugit.. ccc cccccecnees 363

laticeps ..... eee eee eee 348

leona... ... eee cece eee es 269

COVINA. eee ce rere ences 317

lilea ... ec eee eee eee 273

LUXUTIOSA oo ev eacceeeees 344

macrocephala ...ccreees 345

mazatlane .....-..0ee- 294.

——— MCEPRTA. eee eeeeee 807

———— MEJATEA «ec vvceevevnee 306

—— melanosoma ........0ees 364

—— mexicana ............55 265

———— MEXICONA occ cccceveces 266

—— microphthalma........4+ 364

—— MONTEZUMA ......eseees 364

——— MUNTFICA voc eeveeccvees 345

——— MANA... cee eee eee enees 295

OAJACA oc eee eee ee eee eee 274

—— OUJ ACA veer eeennes 279, 281

—— occidentalis .......6008. 260

—— odontophora............ 304

—— ordinaria ............:. 289

OTthona ...e. sees eeeeee 288

OVTRONA 2... eee eee eeee 290

osberti ..... cece eee eee 284

—— pantaleone ............ 300

—— pantaleone .... 299, 301, 303

POMONA..... eee eee ones 306

porcata ... 6. eee ee ee eee 275

POTCUA . oc eevececceeeee 276

PLCEMA .. eee eee eee 292

prominens.............. 278

PTOMINENS. 6. se seseecees 274

PSAMMAATOMA . 14.600 324

PSYTA oe cece ee eee eee 287

——— PSYTO vv cceveceecceees 288

——— PUIChTA oc eraccceceeees 363

——— quadridens ..cscceveees 317

TODINSONIL oc cceceeeeees 313

rofofemorata .......... 264

—— rufofemorata .......06. 265

——— sapiens .........e eee eee 308

Page

Mutilla satrapa... cece cee es 364

SEPATAEA oe. eeeeveeees» SAD

SICREUANA . oc cecececcces 304

sinaloa ........ cece eee 298

——— SINAION. vce ccvcee ences 295

subrobusta ...........- 271

SUDTODUSEA 6. cee ee eev eens 270

sumichrastt ..cvevessees 359

—— SUSPENSA ....eeeeeeeees 268

—— talus ...... Cee ee oeeee 282

——teape ...... ste ee eee 296

terminata ........0.-.6. 295

— thura...........ceee eee 289

——— BRUT. cece cee e ues 290

—— tolteca .............05- 297

COMCCA vec cccccccceees 299

triangularis ............ 300

—— triangularis ........ 299, 301 |

—— vanduara ...... cee ee eee 281

VONAUATA wivreccceveces 293

———_ vertiCalis oo ccccecccceras 363

VESTED ce cence 363

——_ VUIPINA oo eee rveeees 345

—— VANAPA Liv iceceesccans 349

— wanthocerata............ 330

—— yucatana .............. 304

RAPOlECA .weesseaceeeee 349

MUTILLIDE .,...........005 259

Mygnimia .ivcvsereeees. 1738, 183

MELUCANA weveecccvevces 183

PANAMENSIS wie... cero 184

—-—— USEULAEA. oe cece eens 184

MYZINE . 2. cee cece cee eee 247

MY2INE voce cece ee neces 222

agilis....... cece ee ee eee 248

aualiS .... ccc ee eee eee 257

centralis ............2- 2538

fallax... .. ec cee eee ees 257

-fulviceps ...........06. 248

melanocephala.......... 258

montivaga ............ 255

ornaticepS...........06. 256

—— parvimaculata .......... 258

—— pulchriceps ............ 249

—— pulchriceps ............ 248

—— pulchrina .............. 254

rufiventris.............. 258

—— sexcincta ..........26.. 25)

SELCUNCEA oo cce cece ences 248

sexmaculata............ 251

SEXMACUIALA ove cecereeee 252

smithiana .............. 257

SUbUIAER -. cece eer eeee 251

— toluca ...............- 252

COLUCH cece cece 253

Page

Nephridia wo... cece cece ens 39

NOTOCYPHUS .......0--.008 212

albopictus.............. 212

—— albopictus ....... eee 213

—— apicalis............00.. 212

—— aprealts oo. ec eee eee 213

chiriquensis ............ 213

plagiatus .............. 212

——— plagiatus 6... cece aes 218

stimulator............55 214

——— LY ANNICUS ec eccreaees 2138

violaceipennis .......... 218

NOTOGONIA 1... cee eee eee eee 51

Notogona wo. ccseccceeeene 49, 59

apicipennis ............ 58

— argenticauda .......... 58

argentifrons ............ 55

argentifYrons .... 66. c eee 56

beata ..... cece eee eee 56

—— championi.............. 53

—— chrysura ...........66. 57

—— montezuma ............ 52

MONLEZUMA oe erences 55

panamensis ............ 59

tinctipennis ............ 56

truncata ..... cece ee aee 54

-—— violaceipennis .......... 51

violaceipennis .....4+.. 53, 54

NYSSON 2... cee ee cece eee nes 70

NYS88ON voce cae e cee ceees 69, 71

AZtECUS 0... eee eee ee eee 71

Gives... .. see ee ee eee 71

—— Mexicanus ............ 70

~ ZApOtecus ..........60., 71

NYSSONIDE wo... cece eee eee 69

Odynerus oc ci ccceceseccces 286

OXYBELINE 2... ee. ee eee 155

OXYBELUS ............000005 155

OnyORlus. cori ecccccccvenes 141

argenteopilosus ........ 158

—— aztecls .............00 157

ARLECUS voce cee ececaues 158

—-— bugabensis ............ 156

——- longispina.............. 157

mexicanus ............ 156

Pallosoma ... ccc eee eee eee 173

PUTARYSSON vce e ee ce ee ees 70

MELICUNUS oo vce ceeecee 70

PQPAPUSON voce ccc eveeeeeees 39

Paratiphia ........ 235, 236, 239

Pelopeus axtecus .........00, 25

C@MENCATIUS 66... - ee eee 24

CRTULEUS ove e ee eeceeee 25

COU FOINUUS .. 6... r eee, 25

INDEX.

Pelopeus histrio.. cc. ce ccc

vindex

PELOPGUS........606 costes

Pelop@us occ veccavcceas 2

affinis

ANNUIATUS oo icc cece cece

Chilensts. oo cc cece eae

—— _figulus

—— fistularvius vec cecececes

histrio

JAMAUCENSIS vo. eee ecaeee

LUNALUS oo eee ccc eee eee

~ soliert

Ce ee)

PEPSIS 1... cece ee cee ee eens

PEPSIS icc cece eect eee ees

amabilis ..............

AMADIS... ccc cee ceeces

andrei

AUIYPENNIS. . occ rereeeces

azteca

ARTECH caw ceccccconees

CRTUTCH oo vce c cece e ees

centralig ........e eens

CENtVANIS ve cececcvceces

—— charon

Ce er

—— charon

Chivon .... cee cece eens

cinctipennis ............

CLEVAEA Lecce cca e ene

POPMOSA.. 6 cece ecneeee

fulvicornis ............

guatemalensis

luterpennis

montezuma

|| | |

—— optima

optima

ornata

eee rere eee ees tee

TUDTA.. Lee eee ee eee

——- solitaria

sommeri

Page

Pepsts speciosa ..esccaccceees 219

terminata ......... eeeee 221

—— thome ..... cece eaee ... 36

venusta......eeeee ceeee 221

PHILANTHIDE .....c.cceeees 104

PHILANTHOCEPHALUS........ 86

Philanthocephalus ......00e00. 130

gracilis .......0... eee 88

gracilis ..... veeeeee 87,134

hirticeps .............. 87

hirticeps.......445 86, 88, 1384

maculicepS .......e00. . 8

MACUNCEPS ...eeeeee . 87,134

MEXICANUS ....e eee e ees 89

MELICUNUS 404. . 87, 88, 1383

—— punetifrons ............ 90

PUNCELSTONS . 1. eee ees 87, 183

PHILANTHUS .....ceececceees 1380

Phiulanthus occ icvccceees 86, 104

gracilis ..... cece cece eee 134

hirticeps .......0. eee 184

maculiceps ...,.....665 134

—— maculifrons ............ 132

MEXICANUS ....... eee ee 133

muitimaculatus ........ 133

-—— punctifrons ..... vet eeee 1383

vEenttlabris..cecceccceces 131

— vertilabris...........0.. 131

xanthostigma .......... 131

xanthostigma ......006. 132

Photopsis ...... 374, 375, 394, 395

OVIZADA oo. cee eae 375, 895

PISON 0... cece cee eee eee eee 39

cConforme .......e.eeeee 39

fasciatum .........0008- 39

Pisonitus occ cc cece cuccuees 39

Pisonoides .. 0... cece ccc eee 39

Planiceps .......04. 185, 189, 191

concolor, .....55 cece cece 186

NOLADIIS. oo ec cece wees 186

Plesta occ cence ee eeees 247

ANANS cece cece eens 257

——— maculata oo. ccccccccces 251

TAMCD vcrevccvcccvcees 251

SCLCINCEA vee cece wees. QL

Sexmaculata occ vecceees 251

PODIUM 1... . eee eee eee 26, 403

POMIUM voice cee een nans 24

albovillosum....... ceeee 26

albovillosum .......0. wee 2

—— bellum ................ 28

bellum... ceccecvccces 26

bugabense.............. 4

—— bugabense ....... seceeee 26

CYASSIPCS 2.6... ee eee eee 403

denticulatum......004. -. 28

410

Page

Podium flavipenne.......0..0+ 27

datretllet wc cccseccewees 27

—— luteipenne.............. 27

—— luteipenne .......00000e 26

Tufipes ....... cece eee 28

TUfIPES oc cvveeccrencess 26

Polybia wo. ccc eee ceaes eens 108

PoMPILIDEH ...... wee ee ners ‘158

POMPILUS ........50000- 185, 404

Pompilus ...ceceee. 161, 197, 205

acapulcoensis .......... 198

admirationis............ 202

—— ethiops...........0.0 199

——algidus ............ wee. 212

—— alticola................ 194

alticola ....c...0ee, 198, 195

ANCEPS 2... .. eee eee eee 199

apiculatus.......... .... 205

QUTUPNS oe eee eee eee 163

AZTECUS 2... cree eee cece 189

AZUTCUS 6 oe cece ce ecceves 167

—— hbalteolus ...........6.. 209

balteolus ....eceeeceees 208

boucardi .......-...06- 204

brevicornis ............ 199

—— bugabensis ............ 188

Dugabensis .....cccaceeee 189

CALCATALUS 6, oc cee ce eens 164

— » var. accolens ...... 164

(0) i 404

championi.............. 196

CHAMPIONE wi ceseccacaes 198

—— chiriquensis ........ .... 201

CRIOTIS vice ceva eeees 163

CINCLICOTNIS 6... ee cee eee 174

—— (Planiceps) concolor .... 186

confusaneus ...........- 201

—— CONNEXUS ....- eee eeee 201

—— COFUSCUS ....... 00s eee 204

COTUSCUS. 6... cee eceeeees 205

—. , Var. insignis ...... 204

— y VAL. JULTA oo. cece 204

—— (Aporus) decorus........ 190

—— dubitatus ..... Ce seeenes 206

eubule ............005- 187

eubule ...... eee eee ee 189

CXACEUS oe cece eee eee 202

Jlammipennis .......4.- 178

—— flavomarginatus ........ 191

—— flavopictus ............ 210

Jlavoprctus. ccc cceccveaee 209

formOsuS ....ce eee eeeee 189

FOTMOSUS Loe ccccceseeee 219

—- fulgidus................ 199

—— gloriosus ...........6.. 201

gloriosus ....4. ern 200

INDEX.

Page

Pompilus guatemalensis ...... 206

51 by a 404

‘agnipennis ...... ee eeeeee 178

imperialis ...... cence eee 196

UMpertAlS vo. ce cevees ... 198

7 1 182

impudicus............6. 187

interruptus ........ .... 208

interruptus ..cceeeecees 209

interstitialis ............ 195

——— JULTUS vee ecccrereeeees 204

— levifrons .............. 189

— leona...............05. 198

lepidus ................ 199

—— levipes occ cece cc neees 168

— macronotum............ 187

—— marcidus .............. 211

—— mexicanus,............. 193

———_ MEXWCANUS 6. re ceccenees 163

— » var. floridus ...... 163

montezuma .........06. 1938

—— monticola......... ».... 190

—— mebulosus ....ccececeeee 197

—-— neotropicalis,........... 203

—— neotropicalis ..........4. 204

—— (Planiceps) notabilis .... 186

—— nubifer viccccccccsseuee 167

—omiltemensis .......... 197

—— philadelphicus .......... 197

—— philadelphicus ........ .. 198

pictus ...... cee eee eee 188

pulechrinellus .......... 194

—— (Planiceps) pulchritarsis . 185

—— pulchritarsis .... 6.06000 186

—— pygidialis .............. 210

—— pygidialis ......... cea 211

regalis ..........eeeaee 200

—— rinconensis ............ 404.

——— TUPCEE cer ecnveceeess 177

—— sartorianus ........005. 174

—— simulans .............. 200

—— sinalo# oo... cece eee 192

—— (Aporus) smithianus .... 191

—— smithianus ...ceeeeeeee 189

subargenteus............ 205

SUBVITESCENS 66... cece ees 163

— teniatus .............. 189

—— telemon................ 186

telemon ....cesreaee 187, 189

temaxensis ............ 208

toluca ...... ee eee ee eee 195

torole ..... ceca ee eee 207

OO 208

—— torridus............000, 211

— , var. burrus........ 211

UNCOOL... ce eee aee 198

Page

Pompilus variegatus.......... 188

VET@PACIS . 6... ee eee eee 200

virulentus...........04. 210

—— (Aporus) yucatanensis .. 189

ZAPOteCUS ......... 0000, 193

Prvocnemts oo. ccc e ccc ceceees 1738

—— angustithorar .......... 178

CUNCELCOTNIS voce cee ecens 174

Jlammipennis .......... 178

—— L@V15 oe cece eee 180

BATEOTIANUS we cee ccceees 174

USTULALUS 6. eevee cc eeee 184

VEIOL oo cccceccccuceees 175

PHUONMONYE oo ccc sccececcees 29, 36

CROME vevcccesaccecees 36

Pron@us .... 0. cca oes eeeces 29

Psammophila oo... cece cccnees 3

PSEN oo... cece ec eee eens 1389

PSN vic seccccccccecceveccs 1384

annulipes ...........006 139

PSEUDAGENIA .......... 161, 403

auripilis .............. 163

—— auripilis... eee ceccscaes 162

AZTCCA cee ceeceeeececes 171

azurea ..... cece e aeons 167

—— cerulipes .............. 167

calcarata ...........005 164

—— championi.............. 166

—chloris ................ 163

—collina ....... ec cee 167

63 (0) 161

CYeSSONt ...... oeeee. 162,163

curvinervis ..........0. 162

—— extrema......e.cceveeee 169

—— gentilis ................ 165

incognita .............. 163

INCOQNUA .eeccccscecces 164

isthmica ............ .. 165

levipes ............000, 168

LevipeS oe cece sccccceess 169

MACEL oe cece cee aecncae 171

melanocephala .......... 172

MEXICANA ... cece ee ee eee 163

MEXICANA wicceccccceues 164

montezuma ............ 163

MONtIVAQA..... eee ee ees 164

——nubifer ................ 167

—— nubifer ....... cee wee. 166

orbiculata .............. 171

perdita .............0.. 168

PCrded oe. ccc ccsecseees 169

relativa ........ ceeeeue 170

——- subvirescens ............ 163

SUDVITESCENS ......0.000e 162

tabascoensis ............ 172

—— tarsalis ...........0005, 403

Page

Pseudagenia teapee .......:.. 169

LCAPE Lecce ccc cece vnnes 170

tolteca ...... ee ee ee eee 167

—— utilis. ...... ce eee eee 170

RHINOPSIS... 06sec eee eee eees 37

Abbottta cece eee 37

—— maculicornis............ 38

SALIUS wo. cece eee ee ees 173, 403

SQius occ ccc cece eens 215

alpestris .........-.4.- 179

angustithorax .......... 178

centralis .....-..6..0.. 180

chiriquensis ............ xi

cincticornis ............ 174

-—— dolichocerus ............ 183

flammipennis .......... 178

—— flammipennis .......... 179

—— guatemalensis .......... 180

imitatrix ...........06. 403

—— impiger.............04. 182

——— incomptus.......-...06- 403

JUNO Loe eee eee ee ee 178

——— ]VIS eee eee eee eee 180

——— MEXICANUS.... ee eee 183

MERUCANUS . co vecevecvees 184

— morelosensis ............ 184

neotropicalis............ 174

——- nivalis .......... 00 eee 182

omiltemius ............ 176

—— panamensis ........ 178, 184

PANAMeNnsis ......0005 185, xi

TOMETSL oo. cece ee ee eee ee 183

TOGETSE vecvvcccecevcaes 184

TUPCX eee cece ee eee 177

rufospIna .........0.06. 177

—— sartorianus ............ 174

——smithi ................ 179

teapemsis ........ eee eee 181

trifasciatus ............ 177

ustulatus ...5.......00- 184

a 1.) (>. ae 175

Verepacis ...... eee ee eee 184

COPRPACIS vivveceseveres 185

SCOLIA 1... ... eee eee eee 223

Yo) (a 222, 226

albofimbriata........0005 22

—— ANCEPS ce eeeereeceeeaee 225

APAENS ve vsccvecrvevvas 223

EVA veces 227, 228

AUCH. oe cece cee 225

AZECCA cece ee eee ees 223

ARLECH oo cece e eee eee 224

CONIUCNEA oe cece reeeees 231

COSLAIIS cee e ccc e erence 229

INDEX,

Page

Scolia dorsata .......e..e ee. 230

dubia... cece ee ee eee 225

CPAUPNUM oo cece rcreace 230

—— fervida ....... cece eee 223

—— fossuland ...ccccreseen, 231

—— fuscata oo. cc cerccvecee. 229

—— guttata ...........0008. 224

— hematodes ............ 225

—— hematogastra ........4. 230

— hoffmannseggit ......06.. 229

—— hyhind wor icvcccccccees 228

UPEGUIATIS 6. cee eve eneees 229

MOSH vvcecvececcceees 234

—— mexicana ...........5-. 295

——— MONLEZUME wvccvecccces 223

monticola .......-..006. 223

MONLICOLA vic. ec cece cees 224.

otomita .........e eee ee 226

Pettit... cece vccecccnees 230

QUuadTICINCA . cece eee 231

radula vo... cena 231, 238

SAUSSUYEL . oe cc eee eee ee 226

SELCINCEA wee ccneeeecaee 251

——— tTCINCLA ve eee eee 234

UPUFASCUD. . vce e ee eee 233

EVUSEIS oc cee ee eee 223

VATIEGAEA vee ec evcenne. 229

VUELYPENNIS 6. cece nveeee 227

SCOLMIDH oo. cece ee eee eee eee 222

Simblephilus oo. .ccceeceveees 130

Solenius . 60. ccc eee cee eee 141

SPHEROPHTHALMA ...... 318, 404

Spherophthalma .... 259, 261, 289,

297, 358, 374, 375, 393, 394, 395

——altamira ............-. 865

—— amphissa ............-. 325

amphissa ...... 324, 326, 334

andreniformis .......... 374

ANIMOSA.. 2. eee eee eee 320

AMMOSA. 0. ec cece eens 318

—— anthracia ............-- 352

antiguensis .......+.66. 363

apicalata ........eceeee 374

arachnoides .......+..-- 359

arachnoides ....+-.. 357, 358

aranedldes....... ee ee eee 358

areta .. 0... cece eee eee 3832

——— AOL ccc ne ee neveees 330

ATCCES. occ ce ee eee ees 386

AVCLES occ cece ccc eevee 385

aviadne ......e..eeee nee 365

ASPASIA oo. eee eee ee eee 370

——— AUTIPES .... see ee eee eee 323

AZTECA vec eee eee eee 374.

baloptlas oo. cece eee eee 365

batopilas ........6..0.. 365

Page

Spherophthalma beata ...... 319

Beat oo cece cceeee 317, 323

bisignata ....... cece 323

——blandina ...........6-- 317

Caltha.... cece cece eee es 319

COMRA. co aecceces se eeeee 318

—— canina ........0006. ... 363

COPA occ ccceceeeees 316

cardinalis ..... See e eens 364

cephalica ........eeee0e- 340

cephalica .......00- 337, 339

——chiapa ............000- 323

Chiapa ...eeeees vee eeee 321

——chiron .........eee eee 404

—— chontalensis ............ 337

—— chontalensts ........006 336

—— cleonica..........eeeeee 333

—— C1EONICH ocean ees 334

—— coequalis ........-..... 379

——— CO@QUANIS Lec cccv evens 378

—— cobira ..... ce cece eee 351

combusta ........eee eee 363

connectenS ........6.6. 362

cordovensig .........66. 328

COPGOVENSIS occ cece eeees 329

CYESSONL 6... eee eee eee 364

CYOSUS 2. cece eee eee 316

CYUCIATA. 6. kee eee 323

damia .... ccc cece ee ees 321

—— TAMIA vcccsccccrenes 318

derelicta ... cece cece eee 345

dictynna ........ee eens 353

—— dicetus ..........ee eae 377

—— ducalis ...........00e- . 345

——— dugesSl ...... cc cee eee 365

ephippiata.............. 357

—eubule ...........00eee 383

—— eubtle. vcr ccceccees 381, 382

——euryelea ...........06- 320

——— CEUTY CED. ee cee neevans 318

—— excentrica ..........000 345

—— extinctor ...........2.. 322

CLUINCEOT ca cecvcncaces 318

facilis... .... eee ee eee 892

FOCUS. coc cece en eens 390

—— ferruginea .............. 324

formosa ......eeeeeeees . 365

foxi- ....... ee ee seve 374

frugala ......eec ee ee eee 394

SrUugala sc vccccvcceccece 395

—— gabbi...............00. 317

gamelia.........eeeeeee 376

—— gloriosa................ 359

gothica ................ 323

OTAtIOSA .... cece eee eens 344

GVALLOSA vee cc eceneacaes 339

412

Page

Spheerophthalma guerreroensis . 369

—— hecate wicscccecsecceee 364

Hhiera ...ee esse ee ee eees 352

—— huasteca .............. 316

icaris ......... sec e eens 360

—— ictinus ............066, 378

incognata ........ ewes 336

INCOGNALA voces seeeaeeee 337

—— ingrata ......... eee eee 343

——— INT ALA oe cceccnenees 3839

—— imimica .............86. 318

——— MIMICA ve cccveces 317, 319

—— intrepida .............. 348

—— ipsea ...... cece ee eee 331

USED oeevcccsasaees 830, 832

WZtAPA oc eeceeeceeeseecs 374

igucar ........000. wee. 328

jaliscoensis ............ 346

—— Janira....... cee eee ee eee 334

JONATA vvcevccccceceves 333

——jocularis .............. 315

klugi .......e eee eee eee 363

lacuna .......ccc eee ees 380

laerma .........,.060.. 388

laerma ........ 887, 389, 390

lamyrus............005. 391

LAMYTUS 6c ce eeces 390, 393

—— laothoe ...... eee newness 349

latebalteata ..........-. 404

—— laticeps ........ cee eeeee 348

lerma........000. see eee 317

— ludovica .............. 342

udovied oo. ce cecc ce eeeee 339

luxuriosa ...........00. 344.

——lycimnia .............. 327

—— lycimnia .......... 324, 335

——macrocephala .......... 345

—— MATI@ ............000, 390

——- MATI® re vcvcccccceees 39]

megacantha ............ 365

melanogaster .......... 373

—— melanosoma ............ 364

—— melissa ............00 0 360

—- microphthalma.......... 364

minutissima ............ 324

minutoria ............8. 343

MUNULOTUA ......0464. B30, 344

—— mirandillensis .......... 329

mirandillensis ...... 327, 328

montezum# ..........+. 364

—— munda ..............6. 337

MUNAA vivevscacesseees 336

munifica ..........000. 345

——- myrmiciformis .......... 404.

nigrobalteata .......... 385

—— nigrobalteata............ 386

INDEX.

Page

Spherophthalma nortoni...... 364

——— OCYTOE veesseccececeres 361

OdI0SA oe sees e eee eeeee 341 |

ss 339

—— wax ...... sete ences 375

CAL ev ccceceseeee 376, 377

——- orithyia......... eee eee 825

Ortthyta occ cece ees 324, 326

orizaba ...... eee e eens 375

—— orizaba ...... Seen ene 395

——— otomita ...........0006. 387

——pallene ..........00.0e: 356

panamensis ............ 334

panamensis ..... eee eaee 833

PATON... cece eee cece eee 3881

paron...... 379, 382, 384, 355

perfidiosa .........0005- 368

PCrfidtOSA vo. ceresecvees 369

personata ........eee eee 365

—— petricola ...........66. 823

——— phedyma .............. 327

—— phedyma v.vsscaees 324, 335

—— philinna................ 854

—— phya ...... eee eee 350

——phylacis .............. 382

—— phylacits ........000. 381, 3883

—— posticata ...c.seeeeeees 404

proclea ..... cece eeeeee 350

PrOclea .ivecccsccevuees 351

—— proserpina.............. 364

PVOSETPING . cc ceeevccees 374

prunotincta ............ 359

—— psammadroma .......... 324

—— pulchra..... Se ceec eens 363

—— quadridens ..........., 317

ravula .... ee. cee eee 314

—— relata... cece cece eee 367

respublicana ............ 314

respublicand ......6..06. 313

robinsoni ...........66- 313

POdrigueZi ......e.ee eee 371

—— rustica ............22.. 342

2), 339

——— Satrapa ... cc. eee eee ee 364

schumanni ............ 855

—— separata......eee.eeeees 345

~——— SEVETA oe ec e eee e ee eee 389

SEVETA. 1... eer vee. O87

sicheliana ..........08.. 364

8UChENUNA oo see ce ce ceeee 355

SOlola........... cee eee 365

SONOTEDSIS .........44. ». 835

subgracilis.............. 339

— sumichrasti ............ 359

sumichrastt . 350, 356, 362, 365

temaxensis ............ 355

Page

Spherophthalma thalia ...... 372

thaltd. .... ce cecaae renee O73

—— thera ................4, 358

toluca .. eee cece ee eee 864

Verepacis ...........04. 338

——— VET@PACIS oo ee eeeeccnes 336

—— verticalis ............4. 363

vestita ...........0e eee 363

—— volatilis.............0.. 347

VOLAUIS 6 oe cece cece snes 348

— vulpina...... beet teens 345

—— waterhousei ............ 358

malapa oo... cece cee eee 349

—— xaliscO ..... cece eee ee 3865

xanthocerata .......... 330

TANthOCEVAA vcr ee cenee 331

yucatana ..........6... 366

ZApPOteCA 2... es eee e eee. 349

SPHECIUS 11... cece eee ee eee 91

convallis.......... cooees OL

SOVVIAUS 6. eee eens 91, 92

GVANS 6... 0 ceca 91, 92

hogardt .........4.. 91, 92

TAPLOP occ eceveecaee 91, 92

SPECIOSUS ...........0.. 91

SPCCLOSUS vo eeeeeeeeeeee 92

Spectabilis vo. ce ceeeees 92

SPHEGIDA. 1... cece eee 1

SPHEX wo... eee ee eee ». 29, 403

Spher voce ccccccccceceees 80, 35

apicalis .............0., 35

OO 219

AZtECA oo... eee eee wee. 85

beata ...... eee eee eee 31

CRMENEATIA Lecce ccc cee 24

—— cerulea ................ 29

——— CANUNEH voce ceca 25, 219

— chichimeca ............ 33

— costipennis ............ 35

CYOCSUS occ e cee enn eee 34

diabolicus 6.6... cc. eee 30, 81

—— Morsais ...e.cvae, boeeee 34

—— erythroptera ............ 30

erythropterd vo... cececee 31

Slavipunctata....cseceee. 24

~—— guatemalensis .......... 32

hirsuta ..... ec. cee eee 31

Aarsut vere ceccccceees 32

ichneumonea............ 34

JAMAICENSIS oo. cee ees 24

——— (Priononyx) laerma...... 403

——— WUnata eee cece eeu 24

[eutertpennts. . 6... ceevees 31

——— MEXICANA ....... ce eee 34

MERUCUNE oc eccccaccans 35

MICANS viv scsccccaceeas 34

Page

Sphex nigella ...... ve cees 36

petioluta ..... be ceeeees 35

—— philadelphica........... . 38d

—— plumipes .......04. we. 231

robusta ............0 eee 36

TUDE ooo cece eee eveeees 218

TUPICOPNIS 0... ec ceeeceaes 219

TUPIPENNIS .... ccc cones 30, 31

singularis .............. 33

SPCCLOSA occ eeeenees 91, 219

-—— tepaneca .............. 33

—— thome ................ 36

—— tinctipennis ............ 32

STENIOLIA..........0.005 vere 92

longirostra ..........., 92

LOngGirOStra secs cccccnees 94

scolopacea..........ee 0. 94

SUCEA ee cece ccc u ene eeees 97

CONTINUA... eee eveseeee 98

maculata ..... cease ceee 99

——— PUNCEALA ev cececcccees 99

——— stgnatu ...... pete eeeees 99

STIGMUS. 1... eee e eee eee eee 140

—— montivagus ...... veeeye 14]

parallelus .............. 140

podagricus ..,,........ 140

Stizomorphus ........ Pecceses 101

STIZUS wo. cece cece eee eee .. 1Ol

SURUS oo cece cee eee ee es 91, 102

agilis ............., see. 102

SCVVIAUS Co ace cence 91

—— flavus...............0.. 103

godmant ..... beet eeees 102

GTANAIS oo eee cece eee 91

— lineatus..... ev eeae +... 108

——~ moneduloides ........., 104

speciosus ..... beeen .. 91

—— tridens oo. eeccccereees, 102

INDEX.

Page

LTachybulus ...... see eeeee see. 89

Tachyptera. ccc sececeecccees 59

TACHYSPHEX ..... bee cnees 64

Tachysphet ic .cceccccucves 60

psilocerus ............. . 64

rufo-maculatus.......... 64

TACHYTES 0.0.0.0... 00005 .. 69

Tachytes oo... cecececcccees 60, 64

andreniformis ...,.. an 61

argentipes.......... oe. 62

ferrugineipes .......... 63

guatemalensis ...,..,... 60

—— ornatipes .......... wees 62

yucatanensis............ 60

TArANgd occ cece ueccees 39

ThyP@opus occ ccccccveee ve. 142

9 158

TIPHIA vec e cece cece cece eee 239

Tiphia ..ceeees 222, 223, 236, 245

VA): 241

—— carinata............000. 245

carinata....... wees. 246, 247

clypeata....,...... vee.. 244

Orsata vo. cece cccaaee 230

—— elegans ...,.....,....-. 240

gaumeri...... see eeeeees 244

—— guatemalensis .......... 241

guatemalensis ........ ». 243

intricata ......,,..2+6. 244

—— maculata oo. ccccevecces 251

montezuMa ....,....005 249

—— MONLEZUMNA vicsevvseces 244

MAMCH ov ivvscccveccceces 251

—— rugosa ......,. see eeees 246

—— subspinosa.,............ 244

—— trichiosoma ....,....... 248

trichtosoma ..seeseeeees 246

EVWCINCEA Le eevee evses IBA

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

Page

Tiphia trifasciata . 6... cece 233

Trachypus ....... See eee ees 130

MOELICANUS 6... cee ccceeee 133

Tricholabiodes .......... .... 261

Trielis. ccc cece ccces ee gees 226

TRIGONOPSIS ......00eeeeeees 26

Trigonopsts wo... ceecceeee 24, 28

violaceus ....,.....000, 26

Trtscolid ... cece ceecs ceceeee 223

TRYPOXYLON........... veces 39

Tryporylon ..... Dope ee eeaee 38

albitarse ......... veaee 40

— allitarse ............, .. 39

apicipenne.,...,.....60. 44.

aztecum.......... seeeee 4l

—— balteatum .,............ 43

—-— carinifrons......,....... Al

- CATINUFYONS veces ee vee. 42

—chichimecum .......... 47

- cinereo-hirtum ........ 1. 44

cinereum ......... veeee 40

—cormigerum ,.... ences 47

—— fulvipes..,,........4... 42

fulvispina ..... eens vee 42

—— fusciventre .,...,...,.. 45

——- lactitarse ............. , 41

luteitarse ...,.......... 41

mexicanum ...,...... ». Al

— MCLICANUM ov ccecece oe. 40

—— palliditarse ............ 48

POUEUM oo cevccceccneee 40

rugifrons ..........0005 48

SONOLENSE ...... cece eee 45

SpiNOsSUM ..........004. 46

toltecum .............. 48

Vespa stgnata...ccccccccceeee 99

UUCINCLA, ce eee ccc ceenaes 91

3 HH

PRINTED FY TAYLOR AND FRANCIS,

RED LION COURT, FLEET STREET.

BIOLOGIA CENTRALIAMERICANA.

Edited by F. D. GODMAN and OSBERT SALVIN.

THE issue (in Parts) of a series of Quarto Volumes upon the Fauna and Flora of Mexico and

Central America under this title was commenced in September 1879, and has been continued to

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