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COLEOPTEROLOGICAL NOTICES.

V.

BY

THOS, L. CASEY.

[Extract from Vol, VII : Annals of the Nfw Yokk Acaobity of Scikncks.]

5>

III. — Goleopterological Notices.

V.

BY THOS. L^ CASEY.

Read Oct. 2, 1893.

In bringing together a number of short studies of our IS'orth

American Coleoptera under the above title, the methods and objects

held in view in the other parts of the present series are continued.

The systematic revisions do not pretend to approach completeness,

and are merely efforts to indicate the projjable interrelationships of

the species, based upon such material as it has been found possible

to gather together. New forms are continually being brought to

light, which sometimes tend to alter previously formed conceptions

of specific limits, or to destroy or modify the value of characters

assumed as the bases and criteria of classification. This is the

natural outcome of all endeavors to evolve the laws of complicated

affinities from inadequate data, but, at the same time, it is not

always necessary or advisable to defer the announcement of such

apparent truths as we have been able to discover with the material

at our disposal ; if carefully conducted, I believe that they may, and

generally do, lead onward and upward.

Having before us a confused mass of material which it is proposed

to classify and arrange generically and specifically, the problem is to

record all the genera and species, but neither more nor less. This

problem is frequently more difficult than any which can confront us

in the domain of the exact or physical sciences, because the acci-

dental and variable factors cannot be determined. We might illus-

trate the process by imagining an exact circle finely drawn on paper,

and then trying by free hand to retrace it with a blacker pencil. It

will be found that a portion of the dark line is outside the circle, a

portion within, and another truly on the line. The portion without

represents an excess of units or species, that within those which we

have overlooked, as shown by subsequent and fuller evidence. The

Annals N. Y. Acad. Sci., VII, Oct. 1893.— 19

282 Cohopterological Notices, V.

hand cannot follow the circle exactly, and in like manner is it im-

possible for the human brain to correctly interpret nature; we can

only approximate. It would of course be perfectly eas}^ to strike a

circle wholly within the circumference of fact, but this would be

analogous to the rule of thumb by which an engineer may make a

structure many times too stropg, in order to avoid laborious calcula-

tions. It may answer in a certain way, but is not in the spirit of

true scientific inquiry.

New York, Sept. 7, 1893.

STAPHYLIXIDJE.

Aleocharini.

It is unfortunate, having in view the optical means of investiga-

tion usually employed, that the Aleocharini are so small in size, for,

from all points of view taxonomic and etiologic, they are one of the

most interesting groups of little animals on the earth. The extra-

ordinary diversity of structure and specialization of type observable

among the termitophilous inquilines, are, in a measure, characteristic

of the entire tribe, and it is this diversity alone which has given

rise to the multitude of generic names which have been proposed.

It is impossible to estimate just what proportion of these names is

really necessary, but the number of true genera is without doubt

proportionally much greater than in any other tribe of Staphylin-

idse, possibly excepting the Omalini. This diversity and specializa-

tion bespeaks a greater geological antiquity for the Aleocharini than

for the other tribes of Staphylinidae, and this is indicated again by

the fact that nearly all the associates of the termites, — known to be

more ancient than the Coleoptera, — are taken from the tribe under

consideration, or the closely related Tachyporini.

The study of the subarctic Aleocharini of North America has

been almost completely neglected thus far, but the species are with-

out much doubt as plentiful here as in any other part of the world,

and seem to follow the general rule with regard to the Staphj^linidae

in being more abundant and diversified than in Europe. This is

somewhat remarkable, in view of the superior development in that

continent of several other large families of Coleoptera, and, as I

have before suggested (Col. Not. II, p. 326), seems to point to a

Coleopterological Notices, V. 283

greater age for the Staphylinidae than for some other families of

Coleoptera.

The following detached studies are merely intended as a begin-

ning, and in drawing up the generic diagnoses, I have employed to

some extent the differential characters suggested by Rey in the

"Brevipennes" of France; so that one familiar with that work can

refer the genera to their most probable positions in the European

scheme. It is to be regretted, on the score of simplicity, that it has

been found necessary to propose so many new genera, but I feel

quite sure that those here described are really essential. In fact

several species now referred to Leptusa, Oxypoda and Rheochara,

will ultimately have to form distinct genera. This matter of generic

subdivision is, however, becoming an important one from the mere

standpoint of numbers, and, in the Aleocharini, if we go beyond

Aleochara, Myrmedonia, Bolitochara and others, as determined by

the number of tarsal and antennal joints, it is difficult to tell just

where to draw the line. One good rule to follow in such cases, is

to avoid defining new genera unless there be at least three or four

important structural differences; facies, however, here as elsewhere,

frequently goes far as a guide, and is much more important than

any single organic structural peculiarity.

There is one important point concerning the nomenclature of the

Aleocharini, which should be continually borne in mind. Homalota

Mann, was founded upon a single definitely stated species, the

Aleochara plana of Gyllenhall, which was subsequently found by

Rey to have but four intermediate tarsal joints. This necessitates

the complete abandonment of all our old ideas of Homalota as ex-

tended by Erichson, and the true and only Homalota is the genus

named Epipeda by Rey. In future, therefore, when we think of

the Erichsonian Homalota, we should have in mind Atheta, Colpo-

dota, Amischa, Liogluta and a score or so of other genera.' When

1 This is set forth with sufficient clearness in the recent catalogue of Heyden,

Reitter and Weise. I cannot agree with the authors of that work, liowever,

in changing certain family names by reason of the rehabilitation of Geoff roy's

genera. For instance, under Mylabris, Geoff., p. 331, I am unable to find a

single species named by Geoffroy. Genera are and must be founded upon

species, and if no species were described by Geoffioy under Latin names, it

follows that that author had not adopted a proper binomial nomenclature

when he founded his genera. We are compelled to assume some definite

beginning, and that beginning is the date when tlie names of species were

first published under the true binomial form. It is possible that some genera

284 Goleopterological Notices, V.

there is the least doubt, a name long established in connection with

certain species should not be changed, but in a case of this kind,

where there can be no doubt whatever, the sooner we overcome

our conservatism and adopt what is manifestly proper and right,

the easier it will be for the generations of systematists who are to

come into the world during the next few hundreds or thousands of

3''ears. It is our duty to lay as immovable a foundation as possible

in the nomenclature of all sciences. The time, be it greater or less,

during which we have become accustomed to a certain status or

condition, will count as a mere nothing in future ages.

Aleocharides.

Antennae 11 -jointed ; tarsi 5-5-5-jointed.

]fIASEOCHARA Sharp.

Of this interesting genus we have four species. First, a large

form with red elytra, which is without much doubt semivelutina

Solsky ; second, a similar species, having the base of the prothorax

equally rounded with the sides, but with the elytra black, described

by LeCoute under the name valida (= califnrnica Csy.). Third,

a rather smaller and notably more slender species with black elytra,

having the basal angles of the prothorax distinct, recenth^ made

known by i)r. Sharp under the name ojmcella, and fourth, the fol-

lowing very small species allied to gracilis Shp.

TH. pillierula n. sp. — Black, each elytron feebly suffused with rufo-

piceous toward — but not attaining — the suture ; legs throughout and antennse

toward base dark rufo-piceous ; integuments alutaceous, the elytra rather

more shining, the abdomen strongly shining ; head and pronotum feebly and

sparsely punctate, the elytra more closely and a little more distinctly, the

abdomen rather strongly but not densely, the impressed basal areas impunc-

tate ; pubescence rather long, coarse and plentiful, conspicuous, though much

less soon the abdomen. Head orbicular, rather longer than wide, the eyes

at fully their own length from the base; antennae fully as long as the head

and prothorax, feebly incrassate, second and third joints equal, tenth one-

half wider than long. Prothorax one-fourth to one-third wider than long ;

sides parallel, broadly, evenly arcuate ; basal angles obtuse but very distinct,

founded upon uudescribed species may have been more recently accepted, but

this would scarcely be a case in point, since the adoption of them took place

long after the binomial system was firmly established. To establish a system

is quite another matter, and requires the rigorous fulfillment of certain condi-

tions.

Coleopterological Notices, V. 285

scarcely blunt ; base broadly arcuate, slightly wider than the truncate apex ;

disk very obsoletely impressed along the median line throughout. Elytra,

strongly transverse, at base subequal to the prothorax, but, at apex, quite

distinctly wider ; sides feebly divergent from the base, broadly arcuate ; disk

externally scarcely as long as the prothorax, the suture much shorter than

the median line of the latter, broadly, feebly depressed toward the suture ;

humeri broadly rounded to the base of the prothorax. Abdomen one-half

longer than, the anterior parts, about equal in width to the elytra; sides

parallel, feebly convergent toward apex ; first two tergites strongly, widely

impressed at base, the third very feebly so; fifth just visibly longer than the

fourth. Basal joint of the hind tarsi one-third longer than the second ; two

to four exactly equal ; fifth a little longer than the preceding two together.

Length 4.0-5.0 mm. ; width 0.85-1.25 mm.

Arizona (Benson).

The male above described, has six small slender teeth along the

apex of the sixth tergite, but instead of being disposed in two sets

of three, with a wider interval in the middle as ia the other species,

they are here equidistant. The coloration seems to be constant, and

the largest and smallest specimens in my series are both females.

The rufous cloud on each elytron is extremely feeble.

BARYOD9IA Thorns.

B. SCUlptiTentris n. sp. — Rather narrow, parallel, convex, black, a

narrow apical margin of the elytra almost imperceptibly rufeseent ; legs

scarcely paler, the tibiae and tarsi dark piceo-rufous ; basal joint of the

antennae pieeous ; integuments moderately shining, the abdomen polished ;

head coarsely and rather closely punctate, the pronotum very finely but

deeply, extremely densely and evenly so ; elytra more distinctly biit still

rather finely, very densely and subasperately so ; abdomen very coarsely

deeply and densely punctured, the coarse punctures of the basal depressions

longitudinally coalescent, forming fine strong ridges ; pubescence of the pro-

notum and elytra fine, subrecumbent, very dense and distinct, of the abdomen

longer but fine, sparse and very inconspicuous. Head orbicular, as long as

wide, three-fifths as wide as the prothorax ; antennae feebly incrassate, slightly

longer than the head and prothorax, third joint obconical, elongate, two and

one-half times as long as wide and much longer than the second, tenth scarcely

one-half wider than long. Prothorax broadly ovoidal, one-half wider than

long ; sides broadly, strongly arcuate, becoming distinctly convergent in apical

half; base broadly, strongly arcuate, much wider than the apex which is

feebly arcuate ; basal angles obtuse and blunt ; disk broadly, evenly convex,

without trace of impression. Elytra distinctly transverse, slightly wider than

the prothorax and about as long as the latter ; sides subparallel and broadly

arciiate ; humeri not distinct. Abdomen much longer than the anterior parts,

very slightly narrower than the elytra ; sides parallel and straight ; first three

286 Coleopferological Notices, V.

segments very strongly impressed at base tlirough about one-half of their

length ; fourth and fifth equal in length. Legs rather short ; posterior tarsi

very much shorter than the tibiae, with the first joint distinctly shorter than

the next three. Length 4.0^.2 mm. ; width 1.2 mm.

New York (Catskill Mts.); North Carolina.

The middle coxte are moderately distant, the mesosternal process

extending nearly to the apex, with its sides becoming parallel, the

apex transversely truncate with the angles right and not rounded,

the apical margin just visibly bisinuato, the fine acute median carina

extending to the tip, the space between the carina and side margins

broadly concave. This species is about twice as large as the Euro-

pean morion Grav., and has much longer antennae.

B. thoracica n. sp. — Stout, thick, parallel, polished, black, the lateral

limbs of the pronotum feebly rufescent from diaphaneity ; elytra, tip of the

abdomen, legs and basal joint of the antennae clear pale rufous ; head ex-

tremely minutely, scarcely visibly, remotely punctate ; pronotum very finely,

sparsely, uniformly so ; elytra strongly, rather closely and asperately ; abdo-

men sparsely, unevenly, subrugosely sculptured ; pubescence rather short,

not very dense, stiff, inconspicuous, long and sparse on the abdomen. Head

strongly deflexed, oval, longer than wide, less than one-half as wide as the

prothorax, convex ; eyes well developed ; antennje long, distinctly incrassate,

extending fully to the middle of the elytra, third joint feebly obconical, nearly

three times as long as wide, longer than the second, tenth very slightly wider

than long. Prothorax large, transversely suboval, three-fifths wider than long ;

sides broadly, strongly arcuate, convergent anteriorly becoming gradually

parallel in basal half; base broadly, rather strongly arcuate, miicli wider

than the more feebly arcuate apex ; basal angles very obtuse and rounded but

not obliterated; disk evenly, strongly convex, without trace of impression.

Elytra very short, twice as wide as long, not in the least wider than the disk

of the pronotum and scarcely more than two-thirds as long as the latter ; sides

just visibly divergent and arcuate from the base ; disk not impressed, the

apex transverse. Abdomen — when contracted — not longer than the anterior

parts, at base as wide as the elytra; sides subparallel, becoming feebly con-

vergent toward apex ; first three segments narrowly, deeply impressed along

the base ; fifth distinctly longer than the fourth. Legs rather long ; posterior

tarsi very long and slender, only slightly shorter than the tibise, with the

basal joint fully as long as the next three combined. Length (contracted)

3.0 mm. ; width 1.1 mm.

Canada (Grimsby).

The abdomen is reflexed from the base. The middle coxas are

moderatel}'" distant, the mesosternal process extending nearly to

their apices where it is as usual superposed on the tip of the short

metasternal projection ; the sides of the process are feebly conver-

Coleopterohgical Notices, V. 287

gent, the apex transversely sinuato-truncate with the angles not

rounded, and, along its surface there is a low rounded ridge, extend-

ing to the apex and occupying one-third of its entire subapical width.

The differences between this and the preceding species are almost

certainly subgeneric; the general appearance of thoracica is not

uni'emindful of Oxypoda.

B. bipartita n. sp. — Stout, subfnsiform, rufo-piceous in color, the head

and abdomen darker and blackish; elytra scarcely visibly clouded with

blackish along the suture and toward the flanks ; legs pale flavate through-

out; antennae fuscous, paler toward base, the eleventh joint also paler except

toward its base ; integuments strongly shining, the head finely, strongly, not

very densely, the pronotum finely, strongly, evenly and extremely densely

punctate ; elytra finely, still more densely, subasperately punctate, the abdo-

men much more coarsely, very densely and subrugosely ; pubescence coarse,

stifl", dense, short, pale fulvous and distinct, finer darker sparser and incon-

spicuous on the abdomen. Head small, orbicular, not as long as wide, scarcely

more than one-half as wide as tl)e prothorax, the eyes large, elongate, at much

less than one-half their length from the base; infralateral carina strong,

entire ; vertex evenly convex ; antennae short but only slightly incrassate,

not quite as long as the head and prothorax, the second and third joints equal

in length, the first longer and stouter, fourth but little wider than long, six

to ten equal, slightly though distinctly transverse, eleventh subconical, rather

acute, somewhat longer than the two preceding. Prothorax not quite twice

as wide as long, the sides strongly convergent, very evenly and moderately

arcuate from base to apex ; base strongly arcuate, four-fifths wider than the

apex, which is less strongly arcuate ; basal angles very obtuse, rounded ;

apical equally obtuse but less broadly rounded ; flanks greatly deflexed, the

disk completely unimpressed, the fine basal bead distinct. Elytra at base

equal in width to the prothorax, which is widest at its base, toward apex

quite distinctly wider than the prothorax, equal in length, strongly trans-

verse, the humeri concealed ; sides feebly divergent, evenly and unusually

strongly arcuate throughout ; disk flattened toward the middle. Abdomen

quite distinctly longer than the anterior parts, at base equal in width to the

elytral apex ; sides feebly convergent and straight to the apex ; first two seg-

ments only feebly impressed but not more coarsely punctured at base ; fifth

distinctly longer than the fourth ; border thick, moderately deep. Legs short ;

posterior tarsi slightly shorter than the tibi;e, the basal joint barely as long as

the next two and slightly longer than the last. Length 3.7 mm. ; width 1.3 mm.

Texas (Galveston).

The mesosternal process is moderate in width and extends to the

very apex of the coxae, the apex subtruncate with rounded angles,

the median carina entire, strongly elevated and finely compressed.

This species greatly resembles an Oxypoda in outline. The contrast

288 Coleopterological Notices, V.

between the fine dense punctuation of the anterior parts, and the

coarser, beautifully regular sculpture of the abdomen, is very

marked.

RHEOCHARA Hey.

The species described below is assigned provisionally to this

genus, although the outer joints of the antennae are strongly trans-

verse, the first three tergites gradually less strongly impressed at

base, the posterior tarsi much shorter than the tibiae, and the ante-

rior tibiae entirely devoid of spinules. It will probably form a genus

distinct from Rheochara, but at present it is not advisable to sepa-

rate it, as I have no representative of Rheochara with which to

compare it.

R* lucifuga n. sp..— Slender, moderately convex, pale ochreous-yellow,

the head piceous and the abdomen with a large very feeble piceous cloud near

the apex ; apices of the three basal segments paler than the base ; surface

feebly shining, the abdomen polished ; pubescence rather coarse, decumbent,

moderately dense, sparser on the abdomen. Head ovulate, longer than wide,

three-fifths as wide as the prothorax, evenly convex, finely, sparsely punctate ;

eyes moderate, before the middle ; infralateral ridge very strong ; ligula with

a short thick simple and membranous deflexed process bearing two setse ;

terminal supplementary palpal joint distinct ; antennse as long as the head

and prothorax, thick, the first three joints gradually decreasing in length,

four to ten transverse, increasing greatly in size, the tenth rather strongly

transverse, eleventh large, feebly pyriform, as long as the two preceding,

outer joints somewhat perfoliate. Prothorax one-fourth wider than long, sides

subparallel, broadly arcuate, distinctly convergent only in apical third ; base

broadly arcuate, much wider than the apex ; basal angles very obtuse but

not obliterated ; disk widest just behind the middle, broadly, feebly convex,

finely feebly and somewhat closely punctate, not in the least impressed, the

edges, except at apex, finely beaded ; hypomera slightly visibly from the sides,

subhorizontal. Elytra one-half wider than long, not distinctly wider and a

little shorter than the prothorax ; sides subparallel, feebly arcuate ; humeri

rounded, slightly exposed ; disk rather finely but strongly, somewhat closely,

subasperately punctate ; suture strongly margined, scarcely impressed. Ahdo-

jKcn^when extended — not quite twice as long as the anterior parts, very

slightly narrower than the elytra ; sides just visibly convergent behind the

middle ; fourth segment a little shorter than the fifth, the latter very remotely

punctate ; basal impressions not more densely or coarsely punctate. Legs

moderate ; posterior tarsi much shorter than the tibia, slender, with the basal

joint fully as long as the next two. Length (extended) 4.8 mm. ; width 0.9 mm.

Kentucky (Lexington). Prof H. Garman.

The mesosternal process is long, extremely slender and acutely

pointed, extending to and over the acute apex of the mesosternal

Coleopterological Notices, V. 289

process at about two-thirds the coxal length. This interesting

species is said to inhabit caves, but as the eyes are well developed,

it probably only seeks their seclusion and darkness during the day.

The genus Rheochara seems to be distinct from Aleochara, with

which it is united in the recent European catalogue.

POLISTOMA Steph.

There is considerable variation in the form of the mesosternal

process in this genus, the apex being more truncate in the European

species, but as the Californian species are intermediate in this re-

spect between them and maritima, I have no doubt that the genus

Emplenota Csy. will have to be suppressed ; I have used the name

Polistoma however, as Polystoma is preoccupied. The North

American species in my cabinet may be readily separated as fol-

lows:—

Basal joint of the hind tarsi short, only slightly longer than the second.

Head very coarsely and conspicuously punctured. Atlantic coast.

maritima

Head more finely and sparsely punctured ; form broader. Pacific coast.

arenaria

Basal joint of the hind tarsi much longer, equal to the next two combined ;

form still broader, the head and prothorax more transverse, the latter more

strongly rounded at the sides ; pubescence sparser ; antennae more incras-

sate ; deflexed apical angles of the prothorax very broadly rounded. Pacific

coast paciflca

The species of Polistoma throughout the world are remarkably

homogeneous in general appearance.

P. arenaria n. sp- — Parallel, rather depressed, black, the elytra some-

times with a subquadrate rufescent cloud not attaining the base ; antennae

black ; legs rufo-piceous toward tip ; head and pronotum opaque, extremely

densely and minutely granulato-reticulate, rather finely, feebly, sparsely but

distinctly punctate ; elytra rather less opaque, more strongly and closely punc-

tured ; abdomen polished, sparsely finely and unevenly punctate; pubescence

rather coarse, long, not dense but conspicuous, arranged transversely on the

pronotum. Head orbicular, as long as wide, fully four-fifths as wide as the

prothorax, parallel and broadly arcuate at the sides ; antennae feebly incras-

sate, one-half longer than the head, the outer joints not more than one-half

wider than long. Prothorax feebly transverse, subquadrate, one-fourth wider

than long ; sides parallel, broadly, feebly arcuate; base and apex equal, the

former evenly and very strongly, the latter feebly, arcuate ; apical angles

strongly deflexed, narrowly rounded ; basal extremely obtuse but distinct ;

disk evenly, feebly co;ivex, somewhat flattened in a broad median area toward

290 Coleopterological Notices, V.

base. Elytra moderately transverse, slightly longer and much wider than the

prothorax, parallel ; humeri distinctly exposed at base ; disk flat, deflexed

at apex except laterally. Abdomen slightly narrower than the elytra, as long

as the anterior part of the body, parallel and straight at the sides ; border

strong ; segments subequal. Length 3.6-4.0 mm. ; width 0.9-1.1 mm.

California (San Diego and San Francisco).

Easily distinguishable from pacifica by the narrow, more parallel

form and more conspicuous pubescence. Moderately abundant.

It at first seemed probable that this species might be the same as

Homalota litoralis of Maklin, since the elytra are frequently rufous

with the base and external sides black, this being the described

coloration of litoralis; but the phrases " thorace .... posterius

ante basin latissime transversim impresso, confertim subtilissime

punctulato" do not find the remotest correspondence, there being

no trace of a transverse subbasal impression ; the width, also,

^ line — about | mm. — is not sufficient for arenaria.

P. pacifica n. sp. — Parallel, moderately depressed, black, the legs rufo-

piceous ; antennae picescent toward base ; elytra, except laterally, feebly

rufo-piceous ; sculpture and punctuation as in arenaria, the pubescence much

sparser and less conspicuous. Head much wider than long, scarcely more

than three-fourths as wide as the prothorax ; eyes at rather more than their

own length from the base ; antenn?e strongly incrassate, the outer joints fully

twice as wide as long, one-half longer than the head, shorter and thicker than

in arenaria, the second joint distinctly shorter than the third. Prothorax trans-

verse, nearly one-half wider than long ; sides parallel, evenly, strongly arcuate ;

apex broadly, strongly arcuate ; apical angles strongly deflexed, very broadly

arcuate ; basal extremely obtuse and almost completely obliterated ; disk very

feebly flattened toward the median line from base to apex. Elytra transverse,

only slightly wider and longer than the prothorax ; sides subparallel, straight ;

humeri strongly rounded to the prothorax ; disk flat, feebly deflexed at apex

in the middle. Abdomen, when contracted, distinctly shorter than the anterior

parts combined, nearly as wide as the elytra ; sides parallel and straight ;

border strong, rather deep ; first three segments impressed at base ; fifth longer

than the fourth. Length (contracted) 3.4 mm. ; width 1.15 mm.

California (Sta. Barbara).

The elongate basal joint of the hind tarsi will readily enable one

to identify this species. A single specimen taken by Mr. G. W.

Dunn.

OXYPODA Mann.

The types here assigned to Oxypoda cannot all be retained as

such, for those species having the antennal joints abruptly enlarged

Coleopterological Notices, V. 291

from the fourth, forming a long compact cylindrical club, have the

metasternal process between the middle coxte long and acute, while

the others, with slender or feebly incrassate antennae, have this pro-

cess either entirely obsolete, or else in the form of an extremely

short broad cusp. The former may or may not be congeneric with

the European Mycetodrepa, of which I do not possess a represen-

tative at present, but in any event the three here brought to notice

differ greatly among themselves in somewhat important characters.

The genus will prove to be very extensive in North America, and

I have simply selected at the present time a number of hitherto

undescribed forms, for the most part illustrative of groups; these

may be known among themselves as follows : —

Antenna more slender, gradually and generally feebly incrassate toward tip.

Third antennal joint distinctly longer than the second, the antennae long ;

abdomen parallel, narrowed slightly at the fifth segment ; prothorax

widest before the base, the basal angles almost completely obliterated ;

basal joint of the hind tarsi as long as the next three COngruens

Third antennal joint equal in length to the second, both elongate ; antennae

much shorter ; elytra distinctly longer than the prothorax.

Prothorax widest before the base ; abdomen narrowed from base to apex ;

basal joint of the hind tarsi as long as the next three. ..convergens

Prothorax widest at base ; abdomen parallel, narrowed near the tip ; basal

joint of the hind tarsi but sliglitly longer than the next two.

inipressa

Third antennal joint distinctly shorter than the second.

Elytra longer than the prothorax.

Elytra pale, clouded with black toward the scutellum and toward each

flank; abdominal punctures not so dense nubifer

Elytra uniform in coloration or very nearly so ; sides of the elytra j^er-

fectly parallel; integuments subopaque saxatilis

Elytra shorter than the prothorax.

Prothorax subconical, widest at or near the base, where it is a little

wider than the elytra.

Abdomen blackish, the apices of the segments narrowly paler.

glenorae

Abdomen rufous, with a large blackish cloud occupying most of ter-

gites three to five; form very slender ; size small nigriceps

Prothorax with the sides perfectly parallel and broadly, evenly arcuate

from base to apex, not wider than the elytra ; body very small and

narrow, piceous and black in color lilieata.

Antennae rapidly enlarged from and including the fourth joint, forming a long,

compact, claviform mass.

Antennae, except near the base, completely devoid of erect setae, clothed

uniformly with excessively minute even pubescence, almost perfectly

cylindrical from the fifth joint lllldSOIliCcl

292 Coleopterological Notices, V.

Aiiteniife with short erect setae as usual, rapidly enlarged from the fourth

to the sixth or seventh joints.

Rufo-testaceous, the head and a large subapical abdominal cloud blackish.

fustiger

Black ; elytra slightly picescent, much paler at the humeri.

californica

I have been unable to recognize sagulata Er., which is a species

apparently allied to convergens. but having pale antennte, with the

apical joint obtuse, and a subparallel abdomen, and minuta Sachse,

which is small, piceous, with the antennae toward base, legs, elytra

and anterior parts of the abdomen testaceous; the latter is probably

allied to nigriceps, but in that species the pronotum is very pale

and the elytra dark. The species described by me as Oxypoda

insignis is placed further on in the genus Anepsiota, allied to

Atheta, the anterior tarsi being four-jointed.

O. COngriiens. — Moderately stout and convex, parallel, brown, the head

and abdomen black, the segments paler at apex above and beneath ; legs and

antennae brown, the latter still paler toward base ; integuments alutaceous,

excessively minutely, densely punctate throughout, the pronotum slightly

less densely so and more shining toward base ; pubescence throughout very

short, fine and dense, subsericeous. Head orbicular, rather longer tlian wide,

but little more than one-half as wide as the prothorax, evenly convex ; eyes

moderate, distant from the base ; antennae long, fully attaining the middle of

the elytra, gradually and feebly incrassate, the second joint shorter than tlie

first or third, the latter nearly as long as the next two, tenth joint not dis-

tinctly wider than long, eleventh acutely conoidal, barely as long as the two

preceding. Prothorax transversely suboval, the base moving freely above the

elytra, fully three-fourths wider than long, the sides broadly arcuate, becom-

ing convergent and straighter in apical half, the base much wider than the

truncate apex, broadly, strongly arcuate, the basal angles almost completely

obliterated ; apical but slightly deflexed, broadly rounded ; disk feebly im-

pressed in the middle before the basal margin. Elytra moderately transverse,

at base narrower than, at apex equal in width to, the prothorax, slightly longer

than the latter ; sides distinctly divergent, broadly arcuate, especially near

the base ; humeri concealed ; disk very indefinitely and widely impressed in

the middle toward base. Abdomen but slightly narrower than the elytra, much

longer than the anterior parts ; sides straight and parallel to the apex of the

fourth segment ; first three tergltes impressed at base, successively less strongly;

fifth slightly longer than the fourth. Length 3.4 mm. ; width 1.0 mm.

Montana (Helena); Michigan.

The elytral humeri are frequently a little paler than the other

portions of the disk. This species, which appears to be widely dif-

Coleojyterological Notices, V 293

fused, differs from the European sjoectabilis in its much smaller size

and far less distinct basal angles of the prothorax.

O. COnvergens. — Rather broad, siibfusiforra, black ; four basal joints

of tlie antennae and the legs throughout pale; proiiotum gradually rufesceut

toward base ; elytra and apices of all the ventral segments pale brownish-

rufous ; integuments alutaceous, extremely finely feebly and densely punctate

throughout, the head and pronotum rather the least densely punctate and

more shining ; pubescence short, very dense throughout, sericeous on the

abdomen, the latter bristling with stiff setae toward apex. Head wider than

long, orbicular, evenly convex, scarcely more than one-half as wide as the

prothorax ; eyes rather large, extending to within one-half their length of

the base ; antennae feebly incrassate, as long as the head and prothorax, the

first three joints equal in length, fourth subquadrate, five to ten subequal, a

little wider, slightly transverse, eleventh rather acutely conoidal, barely as

long as the two preceding. Prothorax fully two-thirds wider than long, the

sides strongly convergent, broadly evenly and strongly arcuate from base to

apex ; base fully three-fourths wider than the apex, broadly, strongly arcuate,

the apex transversely truncate ; basal angles obtuse and rather blunt bat

distinct ; disk just visibly wider at basal third than at base, not distinctly

impressed. Elytra at base slightly narrower, at apex a little broader, than

the prothorax, distinctly longer than the latter ; sides perceptibly divergent

and feebly arcuate from base to apex ; humeri completely concealed ; external

apical sinuations narrow and deep ; disk scarcely at all impressed. Abdomen

at base distinctly narrower than the elytra, at the apex of the fifth segment

one-half as wide as the latter ; sides perfectly straight ; border gradually

thicker and deeper from apex to base ; two basal tergites very feebly impressed

along the basal margin ; fifth nearly as long as the third and fourth together.

Length 3.0 mm. ; width 0.9 mm.

New York (Catskill Mts.).

The abdomen is evenly narrowed from base to apex, and the fifth

segment is unusually long. This species cannot be very closely

allied to sagulata, although it approaches that species, according to

description, closer than any other form here described.

O. impressa. — Moderately wide and convex, black throughout, the

elytra extremely indistinctly picescent ; antennae black ; legs rafo-piceous ;

ventral plates slightly and narrowly pale at apex ; integuments but feebly

shining, the head, pronotum and elytra finely and densely but rather dis-

tinctly punctate, the abdomen much more minutely feebly and excessively

densely so ; pubescence rather coarse, dense, semi-erect anteriorly, excessively

minute and dense on the abdomen, each tergite, in addition, with a transverse

apical series of long setae. Head orbicular, evenly convex, nearly as long as

wide, slightly more than one-half as wide as the prothorax ; eyes rather large,

at less than one-half their length from the base ; antennae moderate in length,

slightly longer than the head and prothorax, rather slender and feebly in-

294 Coleopterological Notices, V.

crassate, the first three joints subequal in length, fourth slightly longer than

wide, outer joints distinctly transverse, the tenth less so than the ninth, equal

in width but a little longer, eleventh short, acutely conoidal, not as long as

the preceding two. Prothorax fully three-fourths wider than long ; sides

broadly, evenly arcuate and distinctly convergent from base to apex ; base

fully three-fourths wider than the apex, broadly, strongly arcuate ; apex

subtruncate ; basal angles obtuse and blunt but definite ; disk extremely

obsoletely impressed along the median line, with a large rounded and distinct

impression in the middle before the base. Elytra sliglitly transverse, at base

exactly equal in width to the prothorax and at apex slightly wider, fullv one-

third longer ; humeri not exposed ; disk but feebly, indefinitely and broadly

impressed in the middle toward base. Abdomen at base distinctly narrower

than the elytra, the sides parallel and straight to the apex of the fourth

segment ; fifth very much longer than the fourth. Length 2.75 mm. ; width

0.75 mm.

British Columbia (Glenora). Mr. Wickham.

Readily distinguishable from congruens by its smaller size, smaller

prothorax with more distinct basal angles, shorter antennte, longer

fifth ventral segment and many other characters.

O. liubifer* — Somewhat narrow, subparallel, pale rufo-testaceous, the

head piceous ; abdomen piceous, broadly pale at tip and at the apices of all

the segments ; legs pale ; antennae dusky, pale toward base ; integuments

strongly shining, extremely feebly sculptured ; head and pronotum finely

and closely but feebly and not conspicuously punctate, the elytra scarcely so

densely but more distinctly so, the abdomen minutely, feebly and moderately

densely; pubescence short, decumbent, moderately dense. Head orbicular,

evenly convex, as long as wide, a little more than one-half as wide as the

prothorax ; eyes at nearly their own length from the base ; antennae short,

feebly incrassate, not quite extending to the base of the prothorax, the second

joint a little longer than the first and distinctly longer than the third, fourth

siibquadrate, feebly obconical, five to ten subequal, distinctly wider than

long, eleventh long, obtusely ogival, rather longer than the two preceding.

Prothorax widest at base, two-thirds wider than long, the sides strongly con-

vergent and feebly, evenly arcuate from base to apex ; base and apex equally,

moderately arcuate, the former two-thirds wider than the latter ; basal angles

— viewed laterally — very obtuse and blunt but not obliterated, the apical

moderately defined, broadly rounded ; disk perfectly even, without trace of

impression. Elytra at base scarcely as wide, but at apex fully as wide, as the

prothorax, just visibly longer, slightly transverse ; sides subparallel ; humeri

concealed ; apex strongly sinuate near the sides, the edge thence to the inner

angles feebly, anteriorly oblique and straight ; disk unimpressed, with a black

cloud near the scutellum and another longitudinal near the flanks, not attain-

ing base or apex. Abdomen just visibly narrower than the elytra, not longer

than the anterior parts ; sides parallel, the fifth segment slightly narrowed,

distinctly longer than the fourth ; border thick ; posterior edges of tergites

Coleopterological Notices, V. 295

two to four broadly, feebly sinuate. Legs rather short ; basal joint of the

hind tarsi as long as the next two and equal to the fifth. Length 2.5 mm. ;

width 0.7 mm.

Utah (southwestern).

The trimaeulate elytra, pale coloration, feeble punctuation and

conical prothorax, with the base rather loosely fitted over the base

of the elytra, are distinguishing characters of this rather isolated

species.

O. saxatilis. — Rather narrow and subparallel, blackish-piceous, the

abdomen black, the apices of all the segments paler ; legs pale throughout ;

antenna dark, pale toward base ; integuments densely opaque, finely, very

densely punctate, the abdomen not less densely so, the elytra more distinctly ;

pubescence fine, short, recumbent, extremely dense throughout, the abdomen

without longer setae toward apex. Head a little wider than long, well inserted,

three-fifths as wide as the prothorax, the eyes moderately large, approaching

the base within one-half of their length ; antennae slender, feebly incrassate,

loosely articulated, about as long as the head and prothorax, the second joint

much longer than the first and nearly as long as the next two, four to six

slightly increasing in width, six to ten subequal, slightly transverse, eleventh

acutely ogival, as long as the preceding two. Prothorax two-thirds wider than

long, the sides convergent and distinctly arcuate from base to apex ; base

broadly arcuate, two-thirds wider than the subtruncate apex ; basal angles

obtuse but evident ; disk not distinctly impressed. Elytra throughout the

length exactly equal in width to the prothorax, one-third longer ; sides

parallel, nearly straight ; humeri concealed ; disk with a small and just

visible impression behind the scutellum. Abdomen at base slightly narrower

than the elytra, at the apex of the fifth segment three-fourths as wide as the

latter, distinctly longer than the anterior parts ; sides straight and just visi-

bly convergent from base to apex ; border rather thick ; tergites two to four

very feebly sinuate at apex ; fifth one-half longer than the fourth. Legs

slender ; posterior tarsi filiform, the basal joint slightly longer than the next

two and much longer than the fifth. Length 2J) mm. ; width 0.6 mm.

Colorado (Canon City). Mr. Wickham.

Readily recognizable by the parallel elytra, very nearly as long

as wide, and by the opaque integuments.

O. glenorae. — Narrow and elongate, pale brownish-testaceous, the head

darker, rufo-piceous ; abdomen blackish, the apices of the segments paler ; legs

pale throughout ; antennae piceous, paler toward base ; integuments feebly

shining, extremely minutely and densely punctate throughout, scarcely more

distinctly on the elytra ; pubescence minute, extremely dense throughout, the

abdomen also with a few stiff liristles toward apex. Head slightly wider than

long, well inserted, evenly convex, not quite two-thirds as wide as the pro-

thorax ; eyes moderate, at nearly their own length from the base ; antennae

296 Coleoplerological Notices, V.

slender, very feebly incrassate, barely as long as the head and protliorax, the

second joint subequal in length to the first and one-third longer than the

third, the latter nearly as long as the next two, four to six slightly increasing

in width, six to ten subequal, slightly transverse, eleventh acutely ogival,

fully as long as the two preceding. Ptothorax rather large, subconical, the

base loosely fitted over the base of the elytra, three-fifths wider than long ;

sides distinctly convergent and very feebly arcuate from the rather broadly

rounded basal angles to the apex ; base broadly arcuate, much wider than

the apex ; disk broadly and extremely obsoletely impressed along the median

line in about basal half. Elytra transverse, at base distinctly narrower, at

apex barely as wide as, the elytra, distinctly shorter than the latter ; sides

divergent and nearly straight from base to apex ; humeri completely con-

cealed ; disk with a small impression behind the scutellum. Abdomen one-

half longer than the anterior parts, at base scarcely at all narrower than the

elytra, at the apex of the fifth segment three-fourths as wide as the latter ;

sides almost straight ; border rather thick and deep ; fifth segment much

longer than the fourth. Legs moderate ; posterior tarsi scarcely at all shorter

than the tibiae, with the first joint almost as long as the entire remainder ;

two to four short and equal. Length 2.9 mm. ; width 0.7 mm.

British Columbia (Glenora). Mr. Wickham.

The extremely elongate basal joint of the hind tarsi and large

conical loosely fitted prothorax, will readily lead to the identifica-

tion of this species, which may possibly be referred to the subgenus

Sphenoma.

O. nigriceps. — Slender, subfusiform, convex, the head and antennae

black, the latter pale toward base ; pronotum pale tlavo-testaceous thoughout ;

elytra much darker, piceous ; abdomen with the two basal segments dark

rufo-testaceous, the remainder black, with the apices narrowly paler ; integu-

ments moderately shining, the head polished, rather coarsely, not very densely

punctate ; pronotum more finely, very densely, the elytra more distinctly but

finely, subasperately and extremely densely, the abdomen minutely densely

subasperately and less distinctly ; pubescence fine, extremely short, rather

dense but inconspicuous, the abdomen bristling with long setae toward tip.

Head slightly wider than long, scarcely three-fifths as wide as the prothorax,

evenly, strongly convex, the eyes moderate, at about their own length from

the base; antennae short, rather slender, feebly, gradually incrassate and

rather compact, not more than one-lialf longer than the head, the first two

joints subequal in length, the second distinctly longer than the third, fourth

to tenth feebly, gradually increasing in width, the latter nearly twice as wide

as long, eleventh short, obtusely ogival, about as long as the two preceding.

Prothorax large, rather more than one-half wider than long, the sides strongly

convergent and feebly arcuate from base to apex ; base broadly arcuate, much

wider than the apex, the basal angles obtuse and rather broadly rounded ;

disk with an extremely obsolete impression in the middle before the base.

Elytra distinctly shorter than the prothorax, and, throughout the length.

Coleopterological Notices, V. 297

visibly narrower ; sides subparallel and feebly arcuate ; humeri wholly con-

cealed ; disk feebly, transversely convex. Abdomen fully one-half longer than

the anterior parts, at base nearly as wide, and at the apex of the fifth segment

two-thirds as wide, as the elytra ; sides straight ; border rather thick ; fifth

segment two-thirds longer than the fourth. Legs rather short and thick, the

hind tarsi much shorter than the tibiae, with the first joint a little longer than

the next two. Length 2.0 mm. ; width 0.45 mm.

Rhode Island (Boston Neck).

Readily separable from minuta Sachse, by the pale prothorax and

dark elytra. The antennae are unusually short.

O. lilieata* — Narrow and sublinear, convex, black, tlie pronotum piceous-

blatk, the elytra feebly rufescent; antennae pale at base; legs pale flavo-

testaceous throughout; integuments feebly shining, the pronotum and abdo-

men extremely minutely and excessively densely punctate, the elytra equally

densely but rather more strongly and subasperately, the head a little less

finely and more sparsely ; pubescence extremely minute, dense, the abdomen

as usual with an apical fringe of longer hairs on each tergite, but having only

a very few longer set« toward apex. Head as long as wide, evenly convex,

fully three-fourths as wide as the prothorax ; eyes moderate, at more than

their length from the base ; antennae rather long, loose, feebly iucrassate,

extending to basal third of the elytra, the third joint elongate, only slightly

though visibly shorter than the second, joints increasing only very slightly in

width toward apex, six to ten quite distinctly wider than long, the eleventh

rather large, ogival at tip, fully as long as the two preceding. Protliorux — from

above — only one-third wider than long, the sides parallel and evenly, broadly

arcuate, widest at the middle; base and apex equal, feebly arcuate, the former

fitted rather closely to the elytral depression ; basal angles obtuse and blunt

l)Ut very evident ; disk not distinctly imi^ressed. Elytra short and transverse,

quite distinctly shorter than the prothorax, at base as wide as the prothorax,

and, at apex, just visibly wider ; sides perceptibly divergent and straight from

base to apex ; humeri not exposed ; disk broadly, feebly impressed along the

suture in more than basal half. Abdomen nearly one-half longer than the

anterior parts, at base distinctly narrower than the elytra; sides subparallel,

narrowed toward apex; border moderate; fifth segment one-half longer than

the fourth ; sixth greatly visible, a little narrowed and parabolic but as long

as the fifth. Leys moderate in length, slender, the hind tarsi but slightly

sliorter than the tibiae, with the first joint a little longer than the next two.

Length 2.1 mm. ; width rather more than 0.4 mm.

t

Rhode Island.

This species is rather aberrant, not only in the subquadrate form

of the prothorax, but in the total absence of the infralateral carina

of the head. I cannot see, however, that it differs otherwise from

Oxypoda.

Annals N. Y. Acad. Sci., VII, Oct, 1893,-20

298 Coleopterological Notices, V.

O. Illldsonica. — Moderately stout, subparallel, convex, pale flavo-testa-

ceous throughout, the abdomen more rufous and less flavate, with a small dark

cloud occupying about the fourth tergite ; integuments polished, the head and

pronotum minutely and sparsely punctate, the elytra finely, densely, feebly

but subasperately, the abdomen rather coarsely, strongly, distinctly and not

very densely ; pubescence rather coarse, moderately dense, denser on the

elytra. Head longer than wide, evenly convex, a little more than one-half

as wide as the prothorax, the eyes moderate, black, at more than their own

length from the base; antennae very thick, cylindrical, scarcely longer than

the head and prothorax, the third joint but slightly shorter than the second

but strongly, evenly obconical, not twice as long as wide, four to six very

short and transverse, gradually wider, seven to ten equal, cylindrical, gradu-

ally a little longer but not wider, strongly transverse, eleventh obtuse at apex,

fully as long as the preceding two. Prothorax two-fifths wider than long, the

sides feebly convergent, evenly and distinctly arcuate from the broadly rounded

basal angles to the apex ; base and apex broadly arcuate, the former percepti-

bly the wider ; disk very strongly, evenly convex, without trace of impression.

Elytra moderately transverse, at base distinctly narrower, but at apex just

visibly wider than, the prothorax, distinctly shorter ; sides slightly divergent,

broadly arcuate toward base ; humeri concealed ; disk with a small sutural

impression behind the scutelium. Abdomen one-half longer than the anterior

parts, at base but slightly narrower than the elytra, and, at the apex of the

fifth segment, almost four-fifths as wide ; sides nearly straight ; border rather

thick ; fifth segment but slightly longer than the fourth. Legs somewhat

stout; hind tarsi slightly shorter than the tibiae, with the basal joint as long

as the next three. Length 2.7 mm. ; width 0.75 mm.

New York (near the city).

The infralateral carina of the head is fine but strong and entire,

and the facets of the eyes are rather hirger and more convex than

usual. The thick antennae, with their very peculiar and excessively

minute dense vestiture, totally devoid of erect setae, render this

species quite aberrant.

O. flistiger. — Subparallel, convex, polished throughout, pale testaceous,

the head piceous ; abdomen more rufous, blackish behind the second segment

except at tip ; head finely, sparsely, the pronotum finely, rather less sparsely,

feebly but subasperately punctate, the elytra more strongly, subrugosely but

not more densely, the abdomen rather strongly, subasperately and not densely

so ; pubescence coarse, inclined, not very dense, longer and still sparser on

the abdomen, the latter without subapical bristles. Head wider than long,

three-fifths as wide as the prothorax ; eyes normal, at nearly their own length

from the base ; antennae short, very thick, scarcely as long as the head and

prothorax, the basal joint oblong-oval, nearly as long as the next two, second

thinner, one-half longer than wide and perceptibly longer than the third,

which is slightly elongate and obconical, fourth wider, strongly transverse,

fifth similar but wider, sixth to tenth longer than the fourth or fifth, compact,

Coleopferological Notices, V. 299

very strongly transverse, eleventh short, not longer than wide, obtusely and

obliquely ogival, scarcely as long as the two preceding, outer joints with short

erect setae in addition to the minute pubescence. Prot/iorax three-fifths wider

than long; sides distinctly convergent, evenly and' rather strongly arcuate

frona base to apex ; base broadly, strongly arcuate, much wider than the trun-

cate apex ; basal angles obtuse, blunt but very evident ; disk strongly, evenly

convex, without impressions. Elytra throughout equal in width to the pro-

thorax, distinctly longer, nearly quadrate ; sides subparallel, almost straight;

humeri not exposed. Abdomen about as long as the anterior parts, at base

almost as wide as the elytra ; sides feebly convergent from base to apex and

just visibly arcuate ; fifth segment but slightly longer than tlie fourth ; under

surface sparsely, deeply and coarsely punctate and sparsely clothed with long

coarse hairs. Length 2.3 mm. ; width 0.7 mm.

California (Humboldt Co.).

Differs from the preceding species in the gradually wider and

sparsely setose outer joints of the antennae, and in the structure of

the basal joints. A single specimen of undetermined sex.

O. californica. — Somewhat fusiform, convex, highly polished through-

out, black, the elytra piceous, testaceous at the humeri and along the suture

near the apex ; abdominal tip scarcely at all paler ; legs pale ; antennae black,

pale toward base ; head and pronotum minutely feebly and sparsely punctate,

the elytra finely but a little more strongly and still more sparsely so ; abdomen

finely, scarcely distinctly and sparsely ; pubescence somewhat long, subrecum-

bent, coarse and sparse. Head orbicular, as long as wide, evenly convex,

nearly three-fourths as wide as the prothorax, the eyes at less than their

length from tlie base ; antennse fully as long as the head and prothorax, stout,

feebly setulose and finely pubescent, the first joint small, elongate-oval, longer

than the second, the latter twice as long as wide and distinctly longer than

the third, fourth and fifth very short and transverse, increasing in width,

sixth to tenth subequal in length and width, longer than either the fourth or

fifth and not more than twice as wide as long, eleventh short, obtusely and

obliquely ogival, about as long as the two preceding. Prothorax rather small,

three-fourths wider than long, the sides convergent and arcuate from the

broadly rounded and almost obsolete basal angles ; base and apex broadly

arcuate, the former much the wider ; disk evenly, strongly convex, unim-

pressed, the basal bead strong. Elytra large, but slightly wider than long,

one-fourth wider and rather more than one-half longer than the prothorax ;

sides subparallel ; humeri quite distinctly exposed, rounded ; disk strongly

and widely impressed on the suture in more than basal half. Abdomen as long

as the anterior parts, at base much narrower than the elytra, and, at the fifth

segment, one-half as wide as the latter ; sides feebly convergent from base to

apex and just visibly arcuate ; fifth segment distinctly longer than the fourth.

Legs rather long, very slender ; femora unusually narrow ; hind tarsi two-

thirds as long as the tibise, with the first joint longer than the next two but

shorter than the fifth. Length 1.9 mm. ; width 0.7 mm.

300 Coleopterological Notices, V.

California,

Tbe antenna? are not as stout as m fustiger, and have the ontcr

part more cylindrical, and, in addition, the prothorax is miicb

smaller, the elytra larger and the coloration wholly different. This

is the most sparsely punctate and polished species of Oxypoda which

I have seen.

ACHROIUOTA u- gen.

Body fusiform, moderately convex. Head small, but feebly con-

stricted at base, not inserted deeply in the prothorax ; eyes well

developed ; infralateral carina almost obsolete. Antennae long and

slender, scarcely perceptibly incrassate, setose, the first three joints

elongate. Mentum rather large, trapezoidal, broadly sinuate at

apex. Maxillary palpi well developed, the third joint slightly

longer than tbe second : fourth very slender, unusually long, oblique,

more than one-half as long as the third, simple at apex. Ligula

imperfect in the type. Prothorax transversely sobovaJ, the hypo-

mera broad, strongly inflexed and invisible from the side poste-

riorly, but becoming horizontal anteriorly. Elytra well developed.

Abdomen gradually narrowed almost from the base ; border rather

deep; first tergite broadly impressed at base, shorter than the second,

the others completely unimpressed at base ; fifth just visibly longer

than the fourth. Coxa? large, the intermediate very approximate

but not contiguous, the mesosternal process not extendii:g behind

the middle. Metasternum not advanced between the coxae, the fine

beaded line merely feebly arcuate opposite the intercoxal space, the

surface thence to tbe mesosternum transversely convex, the para-

pleurte rather wide, parallel to the elytra, the epimera not projecting

behind the elytra. Legs rather long and slender ; tarsi slender,

5-5-5-jointed, the posterior slender but much shorter than the tibise,

with the first four joints slightly elongate and as nearly as possible

perfectly equal, the fifth very long, longer than the two preceding-

combined j claws moderately long, slender, evenly arcuate.

It seemed possible at first that the type of this genus might enter

Oxypoda as an aberrant member or subgenus, but the tarsal struc-

ture is so radically diff"erent that it is impossible to place it there.

In fact there is no European genus near Oxypoda which has the

posterior tarsi constituted in any way approximating this, but for

the present it may be considered as allied to Thiasophila. The

anterior tarsi are five-jointed, apparently without the slightest

Coleopterological Notices, V. 301

doubt, which will prevent us from placing the genus among the

allies of Colpodota.

A. flisiforinis n. sp. — Rather stout, Wark, the elytra juet visiblj^ mfo-

piceons ; legs and antennae throughout pale; integuments finely but not

strongly reticulate, rather shining, the head very sparsely, ohsoleteiy punc-

tate, more coarsely so toward the sides and base ; pronotuoi finely, not densely

and obsoletely, the elytra strongly, closely and asperately punctate, the abdo-

men more sparsely, feebly and subasperately, very sparsely so toward apex ;

pubescence short, coarse, decumbent, moderately distinct, sparser on the abdo-

men, the latter bristling with long erect setae toward apex. Ilecul orbicular,

wider tiian long, about three-fifths as wide as the prothorax, strongly, evenly

convex ; eyes not prominent, at rather less than their own length from the

base; antennse long, slender, fully attaining the middle of the elytra, the

fourth and fifth joints longer than wide, about two-thirds as long as the third,

outer joints rather loosely connected, very feebly increasing in width, the tenth

mot distinctly wider than long, eleventh pointed, as long as the two preceding.

Pivthorar three-fourths wider than long; sides broadly arcuate, subparallel

toward base, becoming straighter and distinctly convergent in apical half;

base broadly, strongly arcuate, much wider than the truncate apex, becom-

ing feebly subsinuate near the basal angles, which are obtuse and slightly

rounded ; apical angles only feebly deflexed, rounded ; disk transversely,

strongly convex, very obsoletely impressed along the median line toward the

middle, the posterior margin strongly beaded. Elytra two-fifths wider than

long, at base scarcely as wide as the pronotal disk, but at apex distinctly

wider, about one-third longer; sides distinctly divergent, fiubareuate ; humeri

concealed ; disk rather strongly, indefinitely impressed on the suture behind

the seutellum. Abdoiiien equal in length to the anterior parts, at base slightly

narrower than the elytra, the apex of the fifth segment scarcely more than

one-half as wide as the elytral apex ; tergites, except the first, perfectly even,

not impressed, broadly, feebly convex toward the abdominal apex. Length

2.1 mm.; width 0.75 mm.

New York (near the city). Mr. H. H. Smith.

The single specimen in mv cabinet has no sexual marks of promi-

nence; the sixth tergite is feebly exserted, much narrower than the

fifth, with its apex feebly, evenly sinuato-truncate.

THIASOPHILA Kraatz.

The Ameriean species of this genus resemble the European

angulata Er., in all essential points of structure, sculpture and

vestiture, but have the prothorax a trifle wider near the base, and

the abdomen more parallel and much n)ore distinctly narrower than

the elytra. The genus is widely diffused throughout the subarctic

302 Coleo2)terological Notices, V.

portions of the continent. The three species here brought to notice

may be readily distinguished as follows: —

Elytra but slightly longer than the prothorax, the apical angles of the latter

blunt but rather distinct ; antennae shorter and less incrassate.

Abdomen less elongate, slightly narrower tlian the elytra, strongly distinctly

and moderately densely punctate, tlie dorsal plates strongly transverse.

laticollis

Abdomen longer, much narrower than the elytra, A-ery finely densely and

indistinctly punctate, the dorsal plates less than twice as wide as long.

angustiTeutris

Elytra decidedly longer than the prothorax, the apical angles of the latter

more broadly rounded ; abdomen nearly as in luticoUis, but differing con-

spicuously in coloration; size small asperata

I am unable at present to say anything about the habits of these

insects, but in Europe they are generally inquilinous with ants.

T. laticollis n. sp. — Rather stout and convex, dark piceo-rufous, th^

abdomen uniformly blackish but pale at the apex ; legs and antennje rufo-

testaceous, the latter just visibly clouded toward the middle ; head finely

but strongly, the pronotnm more finely and very densely, the elytra strongly

densely and subasperately punctate ; abdomen with imbricate sculpture, gradu-

ally disappearing behind, the punctures fine but strong, isolated and distinct,

sparse toward tip ; pubescence very short, stiff and rather dense. Head orbicu-

lar, not as long as wide, but slightly more than one-half as wide as the pro-

thorax ; eyes large, prominent, at less than their own length from the base;

tempora convergent and broadly rounded behind them ; antennfe a little longer

than the head and prothorax, rather slender, feebly incrassate, the joints

somewhat compactly united, the first and third subequal, longer than the

second, fourth and fifth slightly longer than wide, tenth scarcely visibly

wider than long, eleventh as long as the two preceding, pointed, constricted

just beyond the middle. Prothorax transverse, not quite twice as wide as long,

the apex subtruncate, about three-fourths as wide as the base, the latter

broadly, feebly arcuate, distinctly sinuate near the basal angles, which are

nearly right though slightly blunt ; sides convergent and feebly arcuate in

apical two-thirds, just visibly convergent in basal tliird ; disk even. Elytra

transverse, at base quite distinctly narrower than the protliorax, slightly

longer than the latter ; sides just visibly arcuate ; disk rather convex, feebly,

indefinitely impressed on the suture toward base. Abdomen — when contracted

— scarcely as long as the anterior parts, parallel, slightly but distinctly nar-

rower than the elytra, the border thick ; first three segments feebly and gradu-

ally less distinctly impressed at base; fourth and fifth equal. Length 2.7

mm. ; width 0.8 mm.

New York.

The single specimen is of undetermined sex; it represents a larger

broader and more distinctly sculptured species than the following.

Coleopferological Notices, V. 303

T. an^lIstiTentris n. sp. — Rather convex, dark red-brown, the abdo-

men darker with the apex pale; legs and antennae throughout pale brownish-

flavate ; anterior parts rather dull, finely, extremely densely but somewhat

distinctly, subasperately punctate, the elytra a little less densely and sub-

rugosely; abdomen more shining, minutely, much less closely punctulate ;

pubescence very short but somewhat coarse and close, distinct, long and

sparsely fimbriate at the apices of the abdominal segments. Head wider than

long, three-fifths as wide as the prothorax ; antennae much longer than the

head and prothorax, moderately incrassate. Prothorax fully three-fourths

wider than long, the sides very feebly convergent from base to apex, broadly,

nearly evenly arcuate from above, widest just behind the middle ; apex

broadly sinuate ; apical angles deflexed, obtuse, not rounded ; basal obtuse,

rather prominent, not in the least rounded ; base broadly arcuate, just visibly

sinuate near the basal angles ; disk broadly, evenly convex. Elytra one-half

wider than long, broadly, deeply emarginate at apex, very slightly longer

than the prothorax and equally wide ; sides subparallel, very feebly arcuate;

base equal to the pronotal base ; humeri not in the least visible ; disk trans-

versely convex, just visibly impressed behind tlie scutellum. Alnlomen at

base much narrower than the elytra, much longer than the anterior parts ;

sides parallel and straight but convergent toward apex ; border thick. Length

2.0-2.4 mm. ; width 0.6 mm.

Rhode Island ; Florida; Iowa.

Readily identifiable by the wide convex pronotum and elytra and

abruptly narrow parallel abdomen ; the prothorax is less strongly

narrowed anteriorly than in laticollis.

T. asperata n. sp. — Subparallel, somewhat convex, red-brown ; legs

and antennae throughout pale, flavescent ; head piceous ; abdomen brighter

red, with the fourth segment piceous-black ; head and abdomen very minutely,

sparsely punctulate ; pronotum and elytra strongly, asperately, densely and

equally punctured ; pubescence short, stiflf, subrecumbent, rather dense and

distinct, sparse on the abdomen. Head orbicular, as long as wide, three-fifths

as wide as the prothorax ; antennae moderately incrassate, much longer than

the head and prothorax, outer joints slightly transverse. Prothorax rather

more than three-fourths wider than long, throughout nearly as in angustiven-

tri^, but with the apical angles distinctly rounded when viewed laterally, and

the basal obtuse and just visibly blunt. Elytra scarcely as wide as the pro-

thorax and fully one-third longer, the apex transversely truncate, just visibly

sinuate toward the middle and deeply so near each external angle ; sides

parallel and almost straight ; humeri not in the least exposed ; base equal to

the pronotal base ; disk not distinctly impressed and but slightly more than

one-third wider than long. Abdomen only slightly but distinctly narrower

than the elytra, scarcely longer than the anterior parts ; sides straight and

parallel, feebly convergent toward apex ; first five segments exactly equal in

length. Legs, coxae and tarsi as in angusticentris. Length 2.0 mm. ; width

0.5 mm.

304 Coleopterological Notices, V.

California (Lake Tahoe and Truckee).

A much smaller species than laticoUis, Avith more rounded apical

angles of the prothorax and somewhat longer elytra ; the pronotal

sculpture is coarser than in angvstiventris.

ISOGLOSSA n. gen.

Body rather stout, subfusiform, convex. Head small, not at all

constricted at base, well inserted, the eyes large, sparsely setose, at

less than their own length from the base ; labrum very short, trans-

versely arched and feebly produced in the middle in a rounded lobe •

infralateral carina strong. Antennae long, very feebly incrassate,

the first three joints long, subequal in length ; fourth feebly obconi-

cal, longer than wide; outer joints moderately close, scarcely visibly

wider than long; eleventh conoidal, pointed, barely as long as the

two preceding. Mentum large, transversely trapezoidal, truncate;

ligula with a slender deflexed and simple terminal process; labial

palpi slender, three-jointed. Maxillary palpi normal, the fourth

joint long and distinct. Prothorax feebly transverse, the basal

angles rounded ; hypomera subhorizontal, in part visible from the

side. Elytra large and well developed. Abdomen feebly narroAved

from the base, the first three segments impressed at base; fifth

longer than the fourth. Anterior coxae very large ; intermediate

almost completely contiguous. Metasternum large, the side-piece.s

moderate in width, parallel, not extending beyond the elytra. Legs

long ; tibiae densely clothed with even and equal stiff inclined setae,

not in the least spinulose; tarsi 5-5-5-jointed, slender, the posterior

distinctly shorter than the tibiae, with the basal joint very long,

equal to the last and rather longer than the next two together ;

claws long, slender, feebly arcuate.

The feeble inflexion of the hypomera seems to ally this genus to

Thiasophila and Stichoglossa, particularly the latter, but the antenme

are much more elongate and the sculpture and facies very diiferent.

I. arciiata n. sp. — StovU, polished througliont, dark piceous-browii, the

antennPB concolorous but paler toward base ; abdomen black, with the apices

of the first three segments slightly pale ; legs pale Havate throughout ; head

and pronotum very minutely, extremely sparsely punctate, the elytra rather

more reticulate, the reticulations transverse, more strongly, rather closely

punctate ; abdomen finely, not densely punctate, the punctures extremely re-

mote toward apex ; head, pronotnm and abdomen coarsely, extremely sparsely

pubescent, the elytra more finely and decidedly densely so. Head barely

Goleopterological Notices, V. 305

three-fonrths as wide as the protliorax, distinctly transverse ; antennae much

longer than the head and protliorax combined, the eleventh joint not paler.

Prothorax transversely subelliptical, one half wider than long; sides sub-

parallel, a little more convergent anteriorly, strongl/ arcuate from above;

base slightly wider than the apex, strongly, evenly arcuate throughout, not

at all sinuate near the basal angles, which are very obtuse and distinctly

rounded ; apical angles strongly deflexed, even somewhat inflexed, broadly

rounded ; disk strongly convex, with the median line very feebly impressed

and a large rounded and rather strongly impressed dent in the middle just

before the base. Elytra large, but slightly wider than long, one-fifth wider

and nearly one-half longer than the prothorax, at base fully as wide as the

pronotal disk ; humeri very slightly visible, rounded ; sides subparallel,

slightly arcuate; apex subtruncate, the lateral sinuations distinct ; disk sub-

convex, broadly, strongly impressed along the suture, especially toward base.

Abdomen quite distinctly shorter than the anterior parts, not more than three-

fourths longer than the elytra when moderately contracted, at base slightly

narrower than the elytra; sides convergent and just visibly arcuate to the

apex, the apex of the fifth segment barely two-thirds as wide as the first ;

border strong. Length 3.0 mm. ; width 0.95 mm.

California (Lake Tahoe).

The large elytra, transversely elliptical and polished pronotum,

with the pronounced rounded subbasal indentation and long antennae

will readily distinguish this species.

OCYUSA Kraatz.

The following species agrees satisfactorily in form and structural

characters with 0. ])rocidua, but has a totally different system of

sculpture; there appears, however, to be considerable disparity

among the European species, which have been separated into sub-

genera by Rey.

O. aspertlla n. sp. — Subparallel, rather stout, compact and convex,

black, the legs and basal parts of the antennae dark rufo-testaceous, polished,

the punctures of the head and pronotum fine, not very dense and strongly

granuliform, of the elytra sparse, strongly asperate, of the abdomen coarser,

nearly normal, not dense but coarser and very dense on the fourth and fifth

segments toward base ; pubescence fine, sparse but rather long. Head trans-

versely orbicular, distinctly shorter and narrower than the prothorax ; sides

parallel and rounded ; eyes at rather more than their own length from the

base ; antennae nearly as long as the prothorax and elytra, thick toward apex,

second joint fully one-half longer than the third, the latter obconical, twice

as long as wide, fourth obconical, slightly longer than wide, four to ten sub-

equal in length but evenly, perfectly gradually and conspicuously increasing

in width, the tenth strongly transverse, eleventh ogival, obtuse. Frothorax

306 Coleopterological Notices, V.

large and evenly, strongly convex, nearly one-half wider than long, widest

just before the middle, tlie sides feebly convergent and nearly straight thence

to the base, broadly rounded to the apex which is broadly arcuate ; base

arcuate, rather wider than the apex ; basal angles obtuse and slighty rounded.

Elytra strongly transverse, slightly shorter than the prothorax, at base just

visibly narrower than the latter but equal at apex, the sides very feebly

divergent, nearly straight. Abdomen a little longer than the anterior parts,

as wide as the elytra ; sides subparallel but convergent behind ; border thick

toward base; first three segments impressed at base; fifth longer than the

fourth. Legs moderate ; tarsi all distinctly five-jointed, the posterior slender,

distinctly shorter than the tibise, the first joint fully as long as the next two;

middle coxse very slightly separated, the mesosternal process acute, prolonged

for nearly two-thirds their length, with the apex slightly free. Ungues long,

very slender, feebly and evenly arcuate. Length 1.6-1.75 mm. ; width 0.6 mm.

Iowa ; Rhode Island.

Rather abundant and probably occiirrin;?' in moss. The infra-

ocular ridge is very strong and well developed, the hyporaera

feebly inflexed and visible from the side.

PIIL<E:0P0RA Erichs.

A specimen before me labeled " North Carolina," agrees very well

with the original description of latens Er., but has the elytra gradu-

ally paler from base to apex and the body rather smaller, measuring

only 1.8 mm., while Erichson gives the length as "1^ lin. ;" the

first four segments of the abdomen are almost equally impressed

at base. The following is a larger, more linear species, altogether

different in facies, but having all the principal structural features of

Phloeopora : —

P. ferniginea n. sp. — Pale yellowish-ferruginous, the head a little

darker ; abdomen brighter rufous, with a subapical piceous cloud ; legs pale ;

antenn?e fuscous, pale toward base ; head and pronotum finely, densely reticu-

late and dull, very minutely, indistinctly punctate, the latter almost opaque ;

elytra a little less dull, very minutely, densely but quite distinctly punctate,

the abdomen shining, finely, subasperately, rather closely punctate, with the

pubescence long, sparse but distinct ; pubescence of the anterior parts fine,

short, dense and distinct but not conspicuous. Head much shorter and nar-

rower than the prothorax, the antennae as long as the head and prothorax,

not very stout ; eyes at their own length from the base. Prothorax fully one-

third wider than long, widest just before the middle, the sides broadly, evenly

rounded to the apex which is broadly and feebly arcuate, distinctly conver-

gent and very feebly sinuate to the base, the latter broadly arcuate and

slightly wider than the apex ; basal angles obtuse ; disk evenly convex.

Elytra distinctly wider than long, scarcely perceptibly wider and longer than

Coleopferological Notices, V. 30T

tlie prothorax ; sides snbparallel, very feebly ai'cnate ; Immeri slightly ex-

posed ; disk indefinitely impressed along the suture toward base. Abdomen

long, very much longer than the anterior parts, slightly narrower than the

elytra ; sides straight and parallel ; border thick ; dorsal plates scarcely twice

as wide as long. Length 2.3 mm. ; width 0.5 mm.

Pennsylvania.

The large opaque prothorax, about as wide before the middle as

the elytra, and long testaceous abdomen with subapical cloud, will

render the identification of this species at all times easy. It is

probable that ferrvginea will be regarded as forming a subgenus

of Phloeopora, and I therefore give below some of its more im-

portant structural characters: —

Body linear, thick and convex. Head parallel at the sides,

rounded and constricted behind, not deeply inserted, the neck not

quite two-thirds as wide as the head; eyes moderate, before the

middle ; infralateral carina obsolete. Antennae short, slender, very

feebly incrassate, the second joint about as long as the next two ;

third obconical, twice as long as wide; outer joints strongly trans-

verse, not very densely pubescent and with intermixed short stiff

setag; eleventh small, compressed, conoidal, as long as the two pre-

ceding. Mentum moderate, transverse, trapezoidal. Maxillary palpi

normal. Ligula with a cylindrical process, which is extremely

minutely cleft at apex. Pronotal hypomera feebly inflexed and

distinct viewed laterally, narrowed but not obsolete near apex and

thence widening and distinct along the oblique apical parts to the

neck. Abdomen with the first four segments equally and rather

strongly impressed at base; fifth \qyj slightly longer than the

fourth. Intermediate coxae very narrowly separated. Metaster-

num ample, the episterna moderate, parallel; epimera nearly as

wide behind as the episterna, disappearing under the elytra at the

middle. Legs rather short, femora noticeably stout; tibiae slender;

tarsi 5-5-5-jointed, the posterior very slender, three-fourths as long

as the tibiae, with the first joint as long as the next two, the fifth as

long as the first two together.

3VASIREMA n. gen.

Body slender, parallel, rather convex Head orbicular, feebly

constricted at base, the neck very wide ; eyes small, at twice their

length from the base ; infralateral carina very feeble, not entire ;

labrum short and transverse. Antennge strongly thickened toward

308 Coleopterological Notices, V.

apex, distant at base, the second joint much longer than the third,

the latter strongly obconical, not twice as long as wide ; third to

tenth very short, perfoliate and transverse ; eleventh oblong, not

compressed, obtuse at apex, rather longer than the two preceding ;

pubescence toward tip very short dense and uniform, without trace

of erect setse. Maxillary palpi moderate, normal ; second and third

joints equal in length ; fourth oblique, distinct. Mentum very short

and transverse, trapezoidal, truncate. Ligula with an acutely

triangular median process; labial palpi small, very slender, three-

jointed, the last joint as long as the two preceding. Prothorax

small, the hypomera feebly inflexed, distinct when viewed laterally,

terminating at apical fourth. Eh'tra well-developed. Abdomen

parallel, the first three segments equally and strongly impressed at

base; fifth much longer than the fourth ; second not longer than

the first. Mesosternal process extending between the narrowly

separated coxa; for nearly two-thirds of their length, with the apex

slightly blunt. Metasternura large. Legs short, rather stout,

hairy; tarsi 5-5-5-jointed, the posterior short, very much shorter

than the tibiae, the first joint not longer than the next two together,

the fifth longer than the preceding two; ungues long, slender, sim-

ple and feebly arcuate.

This genus is closely allied to Phloeopora, but differs in its less

depressed body, thicker and non-setulose antennae, much more

abbreviated hypomera, smaller eyes, broader neck, and in having

only three of the abdominal segments deeply impressed at base.

]V. Iiuniilis 11. sp. — Narrow, rufo-ferrugiiious, the head and abdomen

except at apex darker, more piceous ; antennae thronghout and legs flavate ;

integuments feebly shining, finely, moderately densely, subasperately punc-

tate, distinctly and rather densely pubescent, the hairs subrecumbent, and,

on the pronotum, streaming transversely from the median line. Head small,

nearly as long as wide, much smaller than the prothorax, convex, even, the

antennae as long as the prothorax and elytra. Prothorax small, but slightly

wider than long, widest just before the middle, the sides broadly arcuate and

feebly convergent anteriorly to the apex, feebly convergent and slightly sinuate

behind the middle to the basal angles, which are obtuse and slightly blunt;

base broadly, feebly arcuate ; disk evenly, rather strongly convex, very obso-

letely, transversely impressed near the base before the scutellum. Elijtra

slightly wider than long, two-fifths longer and fully one-third wider than the

prothorax; sides parallel, very feebly arcuate ; humeri distinctly exposed at

base. Abdomen longer than the anterior parts, in the middle subequal iu

width to the elytra ; sides parallel, slightly arcuate ; border thick ; surface

transversely convex, more shining. Basal joint of the hind tarsi not as long

as the next two. Length 2.0 mm.; width 0.5 mm.

Coleopterological Notices, V. 309

Pennsylvania.

The single representative is probably a female, but the species is

very easily recognizable by reason of the peculiar form of the pro-

thorax, and the disposition of its vestiture.

BT. parviceps n. sp. — Slender, thick, convex, black, the legs and an-

tennae throughout dark rufo-testaceous ; integuments rather shining; pubes-

cence fine, somewhat long, subrecumbent and conspicuous ; punctuation

minute, moderately close, not conspicuous. Head small, orbicular, evenly

convex, much shorter and distinctly narrower than the prothorax ; eyes

moderate, at nearly twice their length from the base ; antennre stout, nearly

as long as the prothorax and elytra ; second joint as long as the next two,

third strongly obconical, longer than wide, four to ten forming a long, evenly

cylindrical, subperfoliate club, transverse, eleventh oblong, obtuse ; joints

from the fourth clothed with minute dense and even pubescence, without

sparse seta. Prothorax very nearly as long as wide, widest at apical third,

thence broadly arcuate around the entire apex, feebly convergent and nearly

straight to the obtuse basal angles ; base broadly arcuate ; disk evenly con-

vex, the pubescence oblique. Elytra parallel, slightly wider than long, one-

third longer and nearly one-half wider than the prothorax ; humeri distinctly

exposed and transverse at base ; disk strongly impressed just behind the

scutellum. Abdomen parallel, slightly but noticeably narrower than the

elytra, subequal in leugtli to the anterior parts, the first three segments

deeply, the fourth very feebly inipi-essed at base ; fifth a little longer than

the fourth. Leys moderate ; basal joint of tlie hind tarsi as long as the next

two combined. Length 2.0 mm. ; width 0.6 mm.

Rhode Island.

Readily distinguishable from the preceding by its entirely black

coloration, slightly less slender form, much longer prothorax, widest

more anteriorly, and by many other characters.

OCALIA Erich.

The species here brought to notice resembles the European punc-

ticollis in general habitus, but differs apparently in the extremely

short and broadly angulate metasternal process behind the middle

coxas.

O. TailcOllTeri n. sp. ^Moderately narrow, convex, black, the legs and

basal parts of the antennse rufo-teslaceous ; integuments polished ; head and

pronotum very finely and rather sparsely punctate, the elytra more coarsely

and decidedly densely so, the abdomen very finely and sparsely ; pubescence

short, decumbent, moderately close, very sparse on the abdomen. Head orbicu-

lar, as long as wide, slightly shorter and narrower than the prothorax, con-

vex ; eyes at a little more than their length from the base ; antennae long and

310 Coleopterological Notices, V.

slender, very slightly incrassate, rather more than attaining the middle of the

elytra, the first three joints elongate, subequal, the first slightly the stoutest,

fourth distinctly longer than wide, tenth just visibly wider than long, eleventh

small, conoidal, pointed, not as long as the two preceding. Prothorax but

slightly wider than long, widest just before the middle, the sides broadly

arcuate and distinctly convergent anteriorly, much more feebly convergent

and distinctly sinuate to the base which is broadly arcuate and much wider

than the apex ; apical angles greatly deflexed and rounded ; basal obtuse and

distinctly rounded ; disk strongly convex, very obsoletely impressed along the

median line, with a feeble rounded impression in the middle just before the

base. Elytra large, quadrate, two-fifths wider and longer than the protliorax ;

sides subparallel ; humeri broadly exposed at base ; surface strongly, broadly

impressed just behind the scutellum ; suture excessively finely margined.

Abdomen rather longer than the anterior parts, distinctly narrower than the

elytra ; sides parallel, becoming feebly convergent near the apex ; border

rather deep ; first three segments strongly, the fourth feebly, impressed at

base ; fourth and fifth subequal ; sixth exposed, rounded. Legs moderate in

length, slender ; posterior tibiae very slender, nearly equally thick through-

out, the tarsi much shorter, filiform, the basal joint rather longer than the

next two and fully as long as the last. Length 4.0 mm. ; width 0.95 mm.

Vancouver Island. Mr. Wickhara.

The middle coxae are large oblique and narrowly separated, the

acetabula deep and acutely limited on all sides except the long

isthmus, which separates the acute apex of the prosternal process —

extending two-thirds the length of the coxae — from the extremely

short obtuse metasternal process, the latter scarcely entering at all

between the coxae. The neck is much wider than in puncticollis.

CALLICERUS Grav.

It is difficult to understand just why this genus is still placed

among the allies of Atheta, for in my specimen of rigidicornis

from the Caucasus, the anterior tarsi are as distinctly five-jointed

as in any species of Aleochara; the facies also indicates its affinity

with Ilj^obates.

C. puljemlUS n. sp. — Subparallel, moderately stout, convex, slightly

shining, the abdomen polished, dark brown, the elytra, apices of the tergites,

legs and basal parts of the antennae paler, obscure rufous ; punctuation of the

head rather strong and moderately sparse, of the pronotum finer, very dense

and rather feeble, of the elytra coarser, rather close and subasperate, of the

abdomen moderately sparse but distinct, subasperate, extending to the base

of the segments ; pubescence rather long, dense and conspicuous, sparse on

the abdomen. Htad orbicular, longer than wide, only slightly but distinctly

narrower than the prothorax, even, convex ; eyes at much more than their own

Coleopterological Notices, V. 311

length from the base ; antennae long, feebly incrassate, rather loose, extend-

ing almost to i\^ end of the elytra, the basal joint a little longer and thicker

than the second or third, the latter similar, subequal and elongate, four to

ten feebly obconical, very slightly increasing in width, the latter barely per-

ceptibly wider than long, eleventh not wider, as long as the two preceding

togetlier ; ligular process slender, elongate, apparently simple; labial palpi

well developed, the two basal joints subequal in width and strongly united.

Prothorax but slightly wider than long, widest near apical third where the

sides are broadly subangulate, feebly convergent and rounded to the apex,

equally convergent and straight to the base, the latter broadly, strongly

arcuate and as wide as the subtruncate apex ; apical angles deflexed, narrowly

rounded ; basal obtuse but distinct ; hypomera greatly visible from the side,

not extending to the apex ; disk transversely convex, very broadly, feebly

impressed in the middle toward base. Elytra large, slightly wider than long,

one-half wider and nearly one-half longer than tlie prothorax ; sides parallel,

very feebly arcuate ; humeri broadly exposed at base ; disk evenly convex,

not impressed, the suture strongly margined. Abdomen distinctly narrower

than the elytra but wider than the prothorax, much longer than the anterior

parts ; sides perfectly straight and parallel from the base to the apex of the

fifth segment, the latter fully one-half longer than the fourth ; first four

strongly impressed at base. Legs long, slender ; posterior tarsi long, a little

shorter than the tibiae, the first joint as long as the next two and rather longer

than the fifth. Length 4.7 mm. ; width 1.2 mm.

New York.

The middle coxje are narrowly separated, the mesosternal process

very long and slender, subacute at apex, the metasternal short, but

slightly prolonged, rounded at tip and not attaining the apex of the

mesosternal, the isthmus short. This species appears to be con-

generic with rigidicornis, but the antennae are much less incrassate

and the terminal joint is more slender.

£CHIDNOGLOSSA Woll.

Id conformity with the views of Mr. Fauvel, I have placed the

species previously described under the name Colusa Csy., in WoUas-

ton's genus, although it is difficult to understand the statement under

the original diagnosis of Echidnoglossa, to the effect that the elytra

are "greatly abbreviated," if the two genera are identical. Rey

introduced some confusion, which seems to be still maintained in

the European catalogues, by placing the Corsican representative in

a hypothetical Echidnoglossa, having four-jointed anterior tarsi and

allied to Falagria ; the tarsi in the American species are all five-

jointed without the slightest doubt, and they are so described also by

Wollaston for the type-species occurring in the Island of Teneriffe.

312 Coleopterological Notices, V.

In the United States the genus, whatever it may prove to be, is

somewhat widely dififused and diversified in species, extending from

the Pacific coast to the Great Lakes ; I have not yet seen it from

the Atlantic regions however, although it possibly occurs here.

The characters employed in my former tabular statement are

variable and difficult to observe, and the species may be much more

conveniently distinguished as follows: —

Abdomen strongly narrowed toward base.

Tarsi with two long slender divergent claws.

Elytral suture much longer than the pronotum.

Antennse long, very much exceeding in length the head and prothorax

combined.

Larger and stouter, very densely punctate species, the first two ven

tral plates densely and strongly cribrate Talida

Smaller and more slender, the abdomen beneath finely and sparsely

punctate, only the basal segment more coarsely so {exilis Csy.).

exiniia

Antennae short and slender, not longer than the head and prothorax,

the outer joints strongly transverse ; species small ...brevicomis

Elytral suture scarcely perceptibly longer than the pronotum.

Body rather less slender, the head semi-circularly rounded behind.

Michigan lacustris

Very slender, the head narrower and more parabolic behind from eye

to eye. Pacific coast gracilis

Tarsi with a single claw, composed of two somewhat shorter claws closely

united or connate, the dividing suture fine but distinct throughout the

length ; body slender, the elytral suture scarcely visibly longer than the

pronotum brendeli

Abdomen much wider, Very feebly narrowed toward base.

Punctuation normal, the abdomen sparsely pubescent ; prothorax normal,

fully as long as wide.

Antennee longer, slender ; head finely, rather sparsely punctate.

inoiiticola

Antennffi shorter and more incrassate, but slightly longer than the head

and prothorax ; head finely but densely and strongly cribrate through-

out lativeutris

Punctuation of the upper surface excessively fine and dense throughout,

the abdomen extremely minutely, densely pubescent ; prothorax larger,

wider than long graildicollis

Ea:ilis cannot be maintained as a distinct species, and there

appears to be very noticeable sexual variation in the size of the

prothorax and color of the body, the former being ralatively larger

in the male, and the female often being paler. The following species

of the above table are believed to be hitherto undescribed : —

Coleopterological Notices, V. 313

E. lireTicorilis. — Somewhat stout, convex, black ; legs and basal parts

of the antennae paler, dark rufous ; integuments polished, very minutely,

sparsely punctate, the elytra rather more strongly and closely so ; pubescence

moderate in length, sparse on the abdomen. Head fully as wide as the pro-

thorax, the neck two-fifths as wide as the width across the eyes, the latter

rather large, at rather more than their own length from the base ; antennae

short, the first joint slightly shorter than the second, the latter more than

twice as long as wide and distinctly longer than the third, which is obconical,

four to ten subequal in length but greatly increasing in width, the latter twice

as wide as the fourth and nearly twice as wide as long, eleventh as long as

the two preceding. Prothojux as long as wide, widest at two-fifths from tl)e

apex, where the sides are strongly rounded and rather prominent, thence

rapidly convergent to the neck and feebly convergent and very slightly sinuate

to the base, the latter very feebly arcuate ; disk strongly convex, even, with

a slight transverse impression near the base. Elytra large, quadrate, three-

fourths wider and nearly one-half longer than the prothorax, the sides parallel

and straight, convergent and rounded near the apex ; humeri rounded, promi-

nent and widely exposed ; disk strongly, broadly impressed on the suture

behind the scutellum. Abdomen moderate in length, at base three-fifths, and

at the apex of the third segment four fifths, as wide as the elytra ; segments

equal in length, the first three very strongly impressed and coarsely, densely

sculptured at base. Ze*/."; and tarsi normal. Length 2.0 mm. ; width 0.55 mm.

California.

The smallest species of the genus and decidedly aberrant, not

only in its shorter antennae but much broader neck and truncate

median parts of the base of the head. A single specimen.

E. lacustris. — Slender, convex, dark rufo-piceous or paler, the last two

segments of the abdomen blackish ; legs pale rufo-testaceous ; antennse slightly

paler toward base ; punctures fine and well separated but strong and distinct,

more asperate on the elytra, finer and very sparse on the abdomen except in

tlie basal impressions, which are coarsely and closely sculptured as usual ;

pubescence rather long, subrecumbent, not very dense. Head as long as wide,

fully as wide as the prothorax, the neck slightly exceeding one-third of the

width at tlie eyes, the latter small, at much more than twice their length from

the base ; antennse long and slender, although distinctly incrassate, extending

nearly to the middle of the elytra, the first three joints elongate, subequal in

length, four to ten shorter, subequal in length, the first much longer than

wide, the latter very slightly transverse, eleventh gradually pointed toward

apex, barely as long as the two preceding. Prothorax fully as long as wide,

widest at two-fifths from the apex, where the sides are narrowly rounded,

thence rapidly convergent to the neck and feebly convergent, broadly and

distinctly sinuate to tlie base, the latter subtruncate, fully twice as wide as

the apex ; disk strongly, evenly convex, not impressed, the punctures more

densely crowded toward the median line as usual. Elytra one-half wider and

slightly longer than the prothorax, the sides parallel, nearly straight, con-

Annals N. Y. Acad. Sci., VII, Oct. 1893.-21

314 Goleopterological Notices, V.

vergent and arcuate in posterior third ; humeri rounded to the prothorax,

exposed, each elytron very feebly, obliquely sigmoid at apex, the external

angles prolonged as usual ; disk convex, feebly, narrowly impressed on the

suture behind the scutellum. Abdomen not as long as the anterior parts, at

base three-fourths as wide as the elytra, and, at the tip of the third segment,

fully as wide as the latter. Legs long, slender, the posterior tarsi short, the

basal joint elongate. Length 3.0 mm. ; width 0.7 mm.

Michigan.

The description is taken from the male, which, throughout the

genus, has the sixth ventral plate relatively small and acutely tri-

angular in form. The female is paler, rather stouter and somewhat

more densely punctate. In both sexes, but especially in the female,

the pronotum is extremely obsoletely impressed along the median

line. The posterior tarsi, as usual, are about three-fifths as long as

the tibiae, with the basal joint fully as long as the next two, the

following three equal among themselves.

E. 'breudeli. — Slender, convex, piceous-black, the abdomen feebly rufes-

cent toward base; legs throughout and antennae toward base dark rufous;

integuments polished, finely, somewhat strongly, rather closely punctate, the

abdomen very sparsely so except at the base of the segments, the elytra

strongly and conspicuously but not very densely punctate ; pubescence rather

long and distinct, extremely sparse on the abdomen. Head fully as long as

wide, rather longer than the prothorax, the neck one-third as broad as the

width across the eyes, the latter moderate, at scarcely twice their length from

the base ; antennre long, the three basal joints subequal in length, the first

slightly thicker, fourth much longer than wide, tenth about as long as wide.

Prothorax nearly as in lacustris, the disk feebly impressed and more densely

punctate along the median line. Elytra two-fifths wider and scarcely percep-

tibly longer than the prothorax ; sides parallel, convergent and rounded

toward apex ; humeri rounded, exposed ; disk strongly convex, strongly im-

pressed on the suture behind the scutellum. Abdomen nearly as long as the

anterior parts, at base three-fourths as wide as the elytra, fully as wide as the

latter at the apex of the third segment. Legs long and slender ; tarsi normal,

the first joint of the posterior fully as long as the next two ; claws connate

throughout their length, rather shorter than usual. Length 3.0 mm. ; width

0.65 mm.

Iowa (Cedar Rapids). Dr. E. Brendel.

The extraordinary character relating to the tarsal claws is con-

firmed by a careful examination of all the twelve tarsi of the two

males in my cabinet ; otherwise, the species is perfectly normal,

differing from lacustris only in its more slender form, smaller pro-

thorax, smaller and especially shorter elytra, and relatively larger

Coleopterological Notices, V. 315

head, showing that connate tarsal claws are of even less taxonomic

significance here than in some parts of the Barini.

E. monticola. — Somewhat stout, convex, black, shining ; abdomen

subrufescent towai'd base ; legs dark rufous ; antennae rufo-piceous toward

base ; punctuation fine and very dense, a little coarser on the elytra, sparser

on the abdomen, fine and not extremely dense on the head ; pubescence rather

long, dense and conspicuous, sparser on the abdomen, where it is however

closer than in the preceding species. Head rather longer than wide, the neck

one-third of tlie width, rather wider than the prothorax, convex ; eyes very

distant from the base, well developed ; antennae extending to the middle of

the elytra, slender, feebly incrassate, the first three joints elongate, subequal

in length, tenth scarcely visibly wider than long. Prothorax fully as long as

wide, widest at two-fifths from the apex, the sides there strongly rounded,

rapidly convergent to the neck, and rather strongly convergent and nearly

straight to the base, the latter feebly arcuate and distinctly more than twice

as wide as the apex ; disk strongly convex, with a rather strong subquadrate

impression in the middle before the base. Elytra large, quadrate, two-thirds

wider and one-third longer than the prothorax ; sides parallel and straiglit

except very near the apex ; humeri veiy widely exposed ; disk strongly im-

pressed on the suture behind the scutellum. Abdomen much shorter tlian the

anterior parts, at base four-fifths as wide as the elytra, and, at the apex of

the third segment, fully as wide as the latter, coarsely, densely punctate in

the three basal impressions as usual. Legs long, slender ; tarsi and claws

normal, the latter long, slender, feebly arcuate and moderately divergent.

Length 3.25 mm. ; width 0.8 mm.

Colorado.

Readily distinguishable from the preceding species by the broader,

less narrowed abdomen, which is however only a difference of

degree ; in generic structure it agrees perfectly with the others. A

single male.

K. lativentris. — Broader, black throughout ; antennae scarcely piceous

toward base ; legs dark rufo-piceous, the tarsi paler ; integuments polished,

rather sparsely but strongly punctate, the punctures of the entire upper sur-

face of the head, and of the pronotum toward the median line, coarser, very

deep, dense and perforate, on the abdomen fine and sparse excej^t in the im-

pressions ; pubescence ratlier sparse but distinct, still sparser on the abdomen.

Head rather longer than wide with the neck one-third as wide, rather wider

than the prothorax ; eyes moderate, before the middle as usual ; antennae

extending to about basal third of the elytra, incrassate toward apex, first

three joints elongate, subequal in length, tenth quite distinctly wider than

long. Prothorax about as long as wide, formed as in the preceding species,

the sides broadly sinuate as well as convergent in basal three-fifths. Elytra

not quite as long as wide, two-thirds wider and about one-fourtli longer than

the prothorax, the sides parallel and feebly arcuate ; humeri widely exposed;

316 Coleopterological Notices, V.

disk convex and impressed througliout on the suture. Abdomen mucli shorter

than the anterior parts, at base four-fifths as wide as the elytra, but, near the

apex, only slightly wider than at base. Legs moderate; tarsi normal, the

first joint of the posterior fully as long as the next two ; two to four equal, or

the second rather shorter than the fourth ; fifth longer than the first. Length

2.9 mm. ; width 0.8 mm.

Montana (Mullan). Mr. H. F. Wickham.

Allied to monticola, but differing in its shorter, more sparsely

punctured elytra, smaller prothorax, without the deep subbasal

fovea and with merely a feeble transverse erosion, more coarsely

deepl}^ and den.sely punctured head and rather shorter antennae.

Mtrmedoniides.

Antennae 11-joiuted ; tarsi 4-5-5-jointed.

This is the largest, and by far the most complex and difficult

division of the Aleocharini.

TIXOTUS Sharp.

This remarkable genus greatly resembles Deinopsis in the outline

of the body, but has the pronotum very strongly convex and deeply

indented in the male. The individuals vary greatly in size. The

two species known to me may be readily separated as follows : —

Abdomen with elongate punctures ; head broadly, deeply excavated nearly

throughout its width in the male CaTiceps

Abdomen with coarsely and regularly imbricate sculpture ; head in the male

broadly, evenly convex and normal imliricatllS

The sculpture of the integuments is strong, pronounced and beau-

tifully regular.

T. caviceps n. sp. — Rather broad, subfusiform, thick, flattened above,

the pronotum very convex; integuments feebly , shining, black, the legs

throughout and antennse toward base dark rufo-testaceous ; pubescence short,

recumbent, moderately dense, very coarse, pale fulvous and distinct, sparser

on the abdomen, each segment with a long porrect fringe at apex; anterior

parts finely, strongly reticulate, the abdomen polished ; punctures of the head

and pronotum fine, of the elytra rather coarse and rugose, not very dense, of

the abdomen not dense, each composed of two long deep parallel striae united

anteriorly at the point of attachment of the hair. Head small, three-fifths as

wide as the prothorax ; eyes moderate, at nearly their own length from the

base ; antennse rather longer than the head and prothorax, somewhat thick,

Coleopterological Notices, V. 317

the second and third joints equal, the latter obconical, more than twice as

long as wide, fourth slightly wider, quadrate, fifth to tenth transverse, the

latter nearly twice as wide as long, eleventh conoidal, slightly compressed,

nearly as long as the three preceding. Prolhorax nearly twice as wide as

long, transversely subelliptical in outline, strongly convex, with a large deep

median dent which does not differ at all in the nature of its pubescence.

Elijtra rectangular, parallel, three-fifths wider than long, equal in length and

width to the prothorax, broadly, strongly emarginate at base in circular arc.

Abdomen much longer than the anterior parts, at base nearly as wide as the

elytra; sides feebly arcuate, evenly, feebly convergent from the base; border

thick and strong ; surface nearly flat ; first and second segments deeply, trans-

versely impressed, the third more feebly ; fifth a little longer than the fourth ;

under surface convex, finely, densely punctate. Legs rather slender, the

posterior tarsi distinctly shorter than the tibiae. Length 1.8-2.5 mm. ; width

O.G-0.85 mm.

Nevada (Reno).

The female differs from the above-described male in its slightly

larger size and more robust form, unexcavated head, and in having

a simple, equal, broadly and feebly impressed line along the middle

of the pronotum from base to apex.

T. imlbricatllS n. sp. — Nearly similar in form to caviceps, piceous-black,

the legs, base of the antennae and apices of the abdominal segments paler ;

head and pronotum dull, very minutely reticulate, strongly and densely so in

the pronotal dent; elytra more coarsely reticulate, more shining and more

strongly, rather densely punctate ; abdomen polished, finely punctate and

evenly imbricate ; pubescence of the anterior parts short, coarse, rather dense,

very dense, longer and conspicuous in the pronotal indentation, sparse on the

abdomen. Head small, scarcely three-fifths as wide as the prothorax, feebly,

evenly convex ; eyes large, at less than their length from the base ; antennae

barely as long as the head and prothorax, feebly incrassate, second and third

joints equal, the latter obconical, three times as long as wide, as long as the

next two, eleventh conoidal, not longer than the preceding two. Prothorax

twice as wide as long ; sides evenly convergent from base to apex, broadly,

evenly arciiate ; base much wider than the apex, broadly arcuate ; basal

angles obtuse but not blunt, very distinct ; disk convex, with a large abrupt

median excavation occupying one-third of the width, extending from the base

nearly to the apex. Elytra very slightly longer and wider than the prothorax ;

sides subparallel, broadly arcuate. Abdomen — extended — nearly twice as long

as. the anterior parts, at base nearly as wide as the elytra; sides gradually

convergent from the base ; border thick but not very deep ; surface nearly

flat ; first three segments moderately impressed at base ; fourth broadly

emarginate at apex and much shorter than the fifth ; middle coxae widely

separated, the niesosternal process broadly truncate. Length 1.6-2.4 mm. ;

width 0.55-0.7 mm.

318 Coleopterological Notices, V.

New York (Catskill Mts.)-

The description is taken from the male ; in the female the prono-

tum is almost perfectly even, without an impressed median line but

with two large feeble and approximate impressions near the base

before the seutellum, and, apparently, an extremely obsolete median

impression near the apical margin. I place with this species a

single male from Austin, Texas, which is very similar but a little

more robust and with more finely and densely punctate elytra.

The evenly imbricate sculpture of the abdomen above and beneath

is a very striking feature.

ItllCRODOIVIA u. gen.

Body parallel, rather depressed. Head broadest behind the eyes,

the latter situated at their own length from the base, convex and

rather prominent, the tempora rounded, slightly more prominent

than the^ye; neck moderate in width, the occiput adjacent to the

pronotum nearly throughout. Labrum short, broad, truncate.

Antennae rather long, incrassate, inserted in small foveae very near

the eyes. Mentum large, flat, trapezoidal, truncate at apex. Max-

illary palpi normal, the fourth joint subulate, oblique, distinct.

Ligula with two minute slender parallel and approximate processes

at apex, the labial palpi distinct, the two basal joints cylindrical, the

second the shorter, third nearly as long as the two preceding, very

slender, arcuate near the base. Infraocular carina completely Avant-

ing. Prothorax nearly flat, rather abruptly declivous at the sides,

the acute lateral line very feeble ; hypomera moderately inflexed

and greatly visible from the side. Abdomen parallel, the basal

segment alone transversely impressed and impunctate at base ;

second a little longer than any of the others; fourth and fifth nearly

equal Intermediate coxai moderately but distinctly separated, the

mesosternal process very short, parabolic, indefinitely limited at

apex, the metasternal also short but acute, separated from the

mesosternal by quite a long polished transversely convex isthmus ;

middle acetabula apparently deep and sharply defined. Meta-

sternum well developed, the episterna wide, parallel, the epimera

large, broad behind and extending slightly behind the elytra, gradu-

ally attenuate anteriorly and disappearing under the elytra at the

middle of the latter. Tibiae rather long, the anterior very slender,

not at all spinose, the terminal spurs small and slender ; tarsi with

4-5-5 joints, the posterior very long and slender, as long as the

Coleopterological Notices, V. 319

tibiae, with the first joint greatly elongate ; ungues small, slender,

arcuate, simple and divergent.

Microdonia belongs evidently to the subgroup Myrmedoniates of

Rey, as shown by general organization and by the great develop-

ment of the metasternal epimera, but is immediately distinguishable

from any of the genera known to me by the small parallel and de-

pressed body, subtriangular head, complete absence of infraocular

carina and many other characters.

M. occipitalis n. sp. — Reddish-brown, the elytra paler, more flavate :

abdomen with a large blackish cloud occupying segments three, four, the

apex of two and base of five ; anterior parts dull, the abdomen shining. Head

subtriangular, rather coarsely, densely, evenly punctate, the punctures round,

very shallow, distinctly defined but variolate and slightly umbilicate ; antenufe

rather longer than the prothorax and elytra, second joint longer than the

third, the latter strongly obconical, one-half longer than wide, outer joints

transverse and perfoliate, the tenth fully one-half wider than long, eleventh

nearly as long as the preceding three, conoidal, compressed. Pi^pthorax dis-

tinctly wider than the head, punctured like the latter, two-fifths wider than

long, the sides very feebly convergent from near the apex to the base and

very nearly straight ; base broadly, evenly arcuate ; basal angles obtuse and

slightly blunt ; disk broadly impressed toward each side except anteriorly,

also in the middle before the scutellum. Elytra just visibly longer but dis-

tinctly wider than the prothorax, rectangular, nearly one-half wider than

long, flat, more finely and rather less densely punctate. Abdomen as long as

the remainder of the body, slightly narrower than the elytra, parallel and

straight at the sides, feebly convex, the border strong ; punctures fine, rather

distinct, somewhat close though veiy sparse toward tip. Length 2.3 mm. ;

width 0.6 mm.

Texas (Austin).

The pubescence of the anterior parts of the upper surface is very

minute, stiff, recumbent and rather dense but not conspicuous, of

the abdomen sparser but longer and more visible. A single speci-

men, perhaps somewhat immature; the singular impressions near

the sides of the pronotum are however probably normal.

DINOCORYNA n. gen.

Parallel, rather stout. Head well inserted, nearly as in Myrme-

donia, the eyes well developed, the tempora rapidly convergent

behind them ; infralateral carina wholly obsolete. Antennae stout,

the first joint very large, robust, constricted at base, as long as the

next three ; second very small, barely longer than wide, as long as

320 Coleopterological Notices, V.

the third but scarcely more than one-half as wide ; third rapidly

obtrapezoidal, as wide at apex as joints four to ten, which form a

compact cylindrical mass, each joint twice as wide as long and

deeply received in the excavated apex of the preceding, the sides

almost parallel ; eleventh conical, compressed, at base not quite as

wide as the fenth, as long as the preceding three. Mentum nearly

as long as wide, trapezoidal. Maxillary palpi well developed, the

third joint very much longer and thicker than the second ; fourth

distinct. Ligula with a long slender, apparently almost simple

process, the palpi rather slender, three-jointed, the first joint longer

than the second and subequal to the more slender third. Prothorax

transverse, the anterior margin transverse and deeply bisinuate, the

median lobe narrowly rounded, the apical angles somewhat ante-

riorly prominent ; hypomera moderately inflexed, visible from the

side, broadly triangular, not attaining the apex. Eh'tra large and

well developed. Abdomen parallel, with the sides strongly, evenly

arcuate; border moderate; first two segments ver}" large, together

constituting three-fifths of the abdomen, the first slightly the larger;

three to five very short ; sixth abruptly extremely narrow and but

slightly exposed. Coxae all large, the intermediate distinctly but

not very widely separated, the metasternal process extending ante-

riorly for nearly one-half their length, narrowly subtruncate at tip

and separated from the apex of the mesosternal, — which cannot be

clearly seen in the unique type, — by a short depressed isthmus.

Legs short, stout, covered with long stifi^ subdecumbent pubescence,

the tarsi filiform but stout, somewhat compressed, long, 4-5-5-jointed,

the posterior about as long as the tibiae, with the first joint elongate,

the first four rapidly decreasing in length, the fifth somewhat longer

than the first; ungues very long, extremely slender, feebly, evenly

arcuate and but slightly divergent.

This remarkable genus is evidently myrmecophilons, or still more

probably, termitophilous, and is allied to Myrmedonia. The basal

tergite is broadly, deeply impressed and polished at base, the others

without trace of impression.

I>. llisillliatR n. sp. — Moderately short and stout, subparallel, pale flavo-

testaceous throughout, the elytra rather albescent ; integuments polished, not

in the least reticulate ; head and pronotum coarsely, sparsely piinctate, the

elytra very nainuely sparsely and indistinctly so, the abdomen subimpunc-

tate, except along the apices of the tergites, where there is a row of close-set,

elongate, tubercular punctures bearing very long stiff setse, the under surface

Coleopterological Notices, V. 321

covered throughout with long coarse hairs ; pubescence very sparse and in-

conspicuous, the abdomen bristling with long setae ; there are also a few long

erect setae toward the sides of the pronotum and elytra, and near the base of

the latter. Head large, transverse, four-fifths as wide as the prothorax, the

occiput feebly impressed in the middle ; antennae extending fully to the middle

of the elytra, the club nearly one-third as wide as the head, not compressed.

Prothorax four-fifths wider than long, widest at the apex, the sides rather

strongly convergent and broadly arcuate to the basal angles, which are ex-

tremely obtuse, rather indistinct ; base much narrower than the apex, sub-

truncate ; marginal line of the flank extremely fine ; disk without trace of

marginal bead, the edges convex, broadly impressed along the middle. Elytra

transverse, slightly wider and one-half longer than the prothorax ; sides sub-

parallel, nearly straight ; humeri moderately exposed at base. Abdomen at

base much narrower, in the middle slightly narrower, than the elytra, shorter

than the anterior parts ; sides parallel and strongly arcuate ; surfaces of

tergites two to five broadly, feebly reflexed toward apex. Length 1.7 mm. ;

width 0.7 mm.

Florida.

The sex of the type cannot be clearly distinguished, and the

abdomen seems to be exserted in its basal parts but drawn in toward

apex, which may account in part for the great preponderance in

length of the two basal ses-ments.

The genera more or less resembling Myrmedonia, which are

represented by the material in my cabinet, may be defined as fol-

lows : —

Mesosternal process very short, not extending between the coxae for more than

one-third of tiieir length, more or less broad at apex and separated from

the metasternal process by a short broad isthmus, which is on the same

level and not depressed Myriuedonia

Mesosternal process longer, extending to the middle of the coxae.

Mesosternal process broad, very broadly rounded at apex, the latter soldered

to the apex of the metasternal by a short broad undepressed isthmus ;

front before the line of the antennae abruptly and strongly declivous to

the subhorizontal clypeus ; eyes as in Myrmedonia, large and near the

base ; occiput thrown up in a strong transverse ridge Nototaplira

Mesosternal process narrow, very acute, not in the least blunt at apex, the

latter free and detached from connecting isthmus ; head long, oval ; front

normal ; eyes small, distant from the base Anepsiota

In all of these genera the side-pieces of the metasternum are

broad, the epimera greatly developed and extending posteriorly

behind the elytra.

322 Coleopferological Notices, V.

MYRI^EDOBflA Erichs.

Even within our own faunal limits, this interesting genus varies

wonderfully in the degree of separation of the intermediate coxae,

which is usually a character of considerable taxonomic value. It

is only a striking example, however, of the fact frequently observed

in large groups of arthropods, that characters unquestionably of

general significance in defining genera may, in certain parts of the

series, abruptly and unexpectedly lose all such weight.

The few species known to me may be distinguished by the fol-

lowing characters : —

Punctures of the pronotum extremely fine.

Apex of the mesosternal process moderate in width.

Basal joint of the antennae large, extremely robust and pyriforra ; pro-

thorax strongly transverse; middle coxae rather narrowly separated

{Platyum Csy.) SOnoiliae

Basal joint of the antennae more slender, sometimes moderately constricted

at base ; middle coxae more widely separated.

Prothorax transverse, the sides not at all sinuate toward base.

caliginosa

Prothorax but slightly wider than long, the sides broadly sinuate

toward base.

Third antennal joint greatly elongated, nearly as long as the next

two; tenth but slightly wider than long faUTeli

Third joint much shorter, but slightly longer than the second ; tenth

very strongly transverse ; eleventh large, nearly as long as the

preceding three combined angustllla,

Apex of the mesosternal process extremely wide, straight, truncate and

rather wider than the distance separating the antennae loricata

Punctures of the pronotum normal but coarse and sparse, somewhat as in

Zyras hawortJii but less remote and more even in distribution obliqiia

Punctures of the pronotum sparse, strong and tuberculiform, at least in the

male.

Elytral punctures very coarse, deep and rather sparse ; abdomen coarsely

spaisely and unevenly punctate, testaceous in color I*lldis

Elytral punctures fine and dense ; abdomen subimpunctate planifer

"Confertim subtilissime punctata, fusca, antennarum basi, thoracis lateribus,

pedibus elytrisque testaceis, his sutura, basin versus latins, angulisque

apicalibus oblique late infuscatis ; thorace transverso, obsoletius canalicu-

lato, basi leviter trans versim foveolato. Long. 1^ lin. Lat. f lin. Penin-

sula Kenai." angularly

Coleopterological Notices, V. 323

I have not been able to identify angularis Makl., and transcribe

the original short diagnosis; it is evidently a species allied to cali-

ginosa, but differing in the pale sides of the prothorax. Fauveli

Shp. is abundant throughout the United States from Pennsylvania

to Los Angeles, Cal. ; I have taken it at Galveston and Waco in

Texas. Budis Lee. is a large and very distinct species, with ex-

tremely coarse and rugose pronotal sculpture.

in. caliginosa n. sp. — Parallel, black, the legs and antennse toward

base dark rufo-testaceous ; apices of tbe two or three basal tergites sometimes

very briefly pale ; elytra fusco-testaceous, feebly, triangularly clouded toward

base and toward the lateral apical angles with piceous ; head and pronotum

minutely reticulate, alutaceous, extremely finely and not very densely punc-

tate ; elytra and abdomen polished, the former finely but distinctly, densely

punctate, the latter impunctate, with the exception of a few fine punctures

near the apical margins ; pubescence fine, extremely short and inconspicuous,

each tergite with a sparse apical fringe of longer hairs. Head slightly wider

than long, fully three-fourths as wide as the prothorax, constricted at base ;

eyes very large, at less than one-half their length from the base ; antennse

rather compressed, separated at base by the length of the eye, thick, mode-

rately incrassate, a little longer than the head and prothorax, basal joint

moderately thick, as long as the next two, third obconieal, barely twice as

long as wide, four to nine equal in length, gradually much wider, loosely

perfoliate, the latter twice as wide as long, tenth equal in width but a little

longer, eleventh conoidal, pointed, rather longer than the two preceding.

Prothorax fully three-fourths wider than long, the sides subparallel, broadly

arcuate, becoming straight and feebly convergent toward base, the basal

angles very obtuse and blunt ; the apical rounded ; base broadly arcuate,

about as wide as the apex ; disk even, with a very fine, frequently entirely

obsolete, impressed line, without antebasal impression. Elytra transverse,

slightly but distinctly wider and longer than the prothorax ; humeri some-

what exposed ; suture not impressed. Abdomen subequal to the anterior parts,

very slightly narrower than the elytra ; sides subparallel, feebly arcuate ;

first three segments deeply equally and not very widely impressed at base ;

fifth shorter than the fourth. Legs slender ; posterior tarsi long but much

shorter than the tibiae, the first joint as long as the next two. Length S.0

mm. ; width 0.85 mm.

New York (Catskill Mts.); Indiana.

A somewhat common species, resembling a stout Atheta and

easily recognizable by tbe large prominent eyes.

M. angUStula n. sp. — Narrow, parallel, convex, polished throughout,

dark piceous ; pronotum slightly paler and rufescent ; elytral humeri and a

narrow apical margin, first three abdominal segments except at base, legs and

antennae pale flavate ; head, pronotum and elytra extremely minutely, evenly,

324 Coleopterological Notices, V.

rather sparsely and not distinctly punctate ; abdomen impunctate, excepting

a widely spaced series bearing longer setae along the apex of each segment ;

pubescence fine and rather inconspicuous above, longer and more distinct on

the under surface of the abdomen. Head wider than long, slightly narrower

than the prothorax, convex ; eyes moderate, at nearly their own length from

the neck ; tempora moderately convergent, broadly arcuate ; antennae extend-

ing fully to the middle of the elytra, the basal joint elongate, oval, not as long

as the next two, outer joints rapidly wider, rather closely connected, strongly

transverse, eleventh long, pointed. Prothorax but slightly wider than long,

widest at apical third, where the sides are rounded and moderately convergent

to the apex, distinctly convergent and broadly sinuate thence to the basal

angles, which are nearly right and only slightly blunt ; base a little narrower

than the apex, both broadly, equally arcuate ; disk rather strongly, evenly

convex, not distinctly impressed. Elytra one-half wider than long, two-fifths

wider than the prothorax but not distinctly longer than the latter ; humeri

broadly exposed at base ; surface not impressed. Abdomen in the middle about

as wide as the elytra ; sides parallel and quite distinctly arcuate ; basal seg-

ments only finely impressed along the basal margins ; fifth shorter than the

fourth. Legs moderate in length, slender ; posterior tarsi vei-y long and

filiform but shorter than the tibiae, the basal joint as long as the next two.

Length 2.3 mm. ; width 0.6 mm.

Florida.

This species resembles fauveli in general appearance, but is

smaller and narrower, and may be known by its much more trans-

verse penultimate joints of the antennae.

M. lorica.ta. n. sp. — Parallel, rather convex, dark blackish-castaneous,

the antennae dark rufo-piceous, paler toward base; abdomen black, the apices

of the three basal segments paler ; legs piceous, the tarsi pale ; head and

pronotum very finely, the former sparsely, the latter more closely, punctate ;

elytra finely but strongly and distinctly, not densely punctate, the punctures

becoming dense toward the inner basal angles ; abdomen impunctate, except

sparsely along the apices ; integuments strongly shining, the abdomen highly

polished ; pubescence fine, rather short, distinct. Head wider than long,

four-fifths as wide as the prothorax, the occiput rather tumid ; eyes large,

prominent ; antennae extending nearly to the middle of the elytra, strongly

incrassate, feebly compressed, rather compact, the outer joints contiguous,

basal joint slender, as long as the next two, third elongate, obconieal, twice

as long as the second and as long as the next two, the latter equal, as long

as wide, five to ten gradually increasing in length and greatly in width, the

tenth nearly parallel, two-fifths wider than long, eleventh conical, not as long

as the two preceding. Prothorax one-fourth wider than long, widest at apical

third where the sides are very broadly, feebly arcuate, feebly convergent and

slightly sinuate in basal half; base broadly, strongly arcuate, subequal to

the apex, which is transverse, becoming feebly sinuate near the sides ; basal

angles slightly obtuse, strongly marked, not at all blunt ; disk convex, the

Coleopterological Notices, V. 325

median line finely and feebly impressed througliont. Elytra transverse, one-

third wider but not at all longer than the prothorax ; sides feebly arcuate ;

humeri broadly rounded and exposed ; disk broadly, feebly impressed at base.

Abdomen at base much narrower than the elytra and as wide as the prothorax ;

sides subparallel, broadly arcuate ; border thin and deep ; first three segments

finely, deeply impressed ; fifth shorter than the fourth ; under surface sparsely,

coarsely pubescent, finely punctate. Legs moderate ; posterior tarsi long but

much shorter than the tibiae, the basal joint somewhat thicker than usual and

very long, nearly as long as the next three. Length 3.6 mm. ; width 1.0 mm.

Canada (Grimsby); Ohio.

The distinguishing character of this species is the very wide

truncate sternal piece between the cox», much exceeding in width

that of any other known to me. The degree of separation of the

middle coxte bears no relation whatever to the width of the body,

for, in sonomae, which is a very much stouter species, the cox^ are

unusually narrowly separated.

M. obliqiia n. sp. — Stout, subparallel, polished, black, the antennte red-

brown, paler toward base ; elytra pale rufous, clouded with blackish in a

basal subtriangular area and also broadly toward the external apical angles ;

apices of all the tergites and the legs throughout pale flavate ; head distinctly

but extremely remotely, the pronotum strongly, rather coarsely and decidedly

sparsely, punctate ; elytra rather coarsely, roughly but not densely so, the

punctures becoming however very dense toward the scutellum ; abdomen

finely, sparsely punctate throughout, with the pubescence long and fine,

coarser and more evident beneath ; pubescence anteriorly coarse and some-

what long but sparse, closer and more evident on the elytra. Head as long

as wide, three-fourths as wide as the prothorax, the eyes moderate, at their

own length from the base; tempera feebly convergent to the base; antennae

longer than the head and prothorax, the basal joint slightly thick, not as

long as the next two, third elongate, one-half longer than the second, not as

long as the next two, fourth quadrate, four to ten very evenly and moderately

increasing in width, the tenth rather shorter than the ninth, one-half wider

than long, eleventh thick, obtusely ogival, as long as the preceding two.

Prothorax fully two-fifths wider than long, widest at apical third, where the

sides are rather strongly rounded and convergent to the apex, somewhat

strongly convergent and nearly straight in basal half; base and apex sub-

equal, the former strongly, the latter feebly arcuate ; basal angles very obtuse

but evident, not distinctly blunt ; disk with a smooth, impuuctate but unim-

pressed median line and a small deep impression in the middle before the

base. Elytra one-half wider than long, two-fifths wider but only slightly

longer than the prothorax ; sides feebly divergent and slightly arcuate from

base to apex ; humeri obliquely, strongly rounded to the prothorax, not be-

coming transverse ; disk scarcely at all impressed. Abdomen broad, as wide as

the elytra ; sides parallel and just visibly arcuate ; border thick and not -vtiry

326 Coleopterological Notices, V.

deep ; first three segments finely impressed at base, the impressions becoming

almost obsolete near the sides ; fifth a little longer than the fourth. Legs

moderate ; posterior tarsi long, filiform, shorter than the tibiae, with the first

joint not thicker but distinctly longer than the next two. Length 3.8 mm. ;

width 1.3 mm.

New York.

A fine species, somewhat suggestive of the subgenus Zyras, but

with much less coarse and dispersed elj^tral sculpture. One speci-

men, apparently female.

M. planifer n. sp. — Moderately stout, subparallel, polished throughout,

rufo-piceous, the elytra darker except near the humeri ; abdomen black, the

first two segments in great part, and the third narrowly at the margin,

pale ; legs pale throughout ; antennae fuscous, pale toward base ; head finely,

sparsely, the pronotum still more finely sparsely and obsoletely, punctate, the

latter with the flattened median area sparsely biit strongly and asperately so ;

elytra finely but strongly, sparsely, subasperately punctate, more strongly

but scarcely more densely toward the scutellum ; abdomen subimpunctate,

except very obsoletely and remotely along the apical margins ; pubescence

fine, sparse, rather more distinct on the under surface of the abdomen. Head

much wider than long, four-fifths as wide as the prothorax ; eyes moderate,

at nearly their own length from the base ; antennae stout, strongly incrassate,

longer than the head and prothorax, the basal joint stout, nearly as long as

the next two, third longer than the second, obconical, twice as long as wide,

four to seven increasing in width, seven to ten subsimilar, rather compact,

subparallel, nearly one-half wider than long, eleventh conical, as long as the

two preceding. Prothorax transverse, three-fifths wider than long, widest at

apical third where the sides are distinctly rounded to the apex, plainly con-

vergent and straight — from above — in basal two-thirds ; base and apex equal,

the former strongly, the latter very feebly, arcuate ; basal angles obtuse but

not blunt; disk with a lai'ge flattened median region, the median line finely

but distinctly impressed. Elytra transverse, two-fifths wider but only just

visibly longer than the prothorax ; sides feebly divergent and arcuate from

the humeri, which are rather broadly exposed ; disk slightly impressed near

the sides behind the middle. Abdomen rather longer than the anterior parts,

quite distinctly narrower than the elytra ; sides parallel, slightly arcuate

behind ; border thin and deep ; first two segments widely and deeply impressed

at base, the third finely and very feebly so ; fourth and fifth subequal. Leijs

slender ; posterior tarsi much shorter than the tibiae, with the basal joint as

long as the next two. Length 3.2 mm. ; width 1.0 mm.

North Carolina (Asheville).

The description is evidently drawn from the male, and in the

female the asperate flat median area of the pronotum is probably

wanting in great part ; the male has, in addition, the sixth tergite

feebly emarginate and unevenly serrulate, a somewhat more isolated

Coleopterological Notices, V. 327

median projection having three short teeth. This species is evi-

dently allied to some of the Mexican forms described by Dr. Sharp.

IVOTOTAPHRA n. gen.

Body rather narrow, thick and subparallel. Head somewhat as

in Myrmedonia, constricted at base throughout the width, the occi-

put transversely prominent ; eyes moderate; infralateral carina not

distinct. Antennae long, loose, subparallel from the fourth joint,

not incrassate, pilose, but devoid of erect setae. The gular sutures

diverge toward the base of the maxillge, and from between them

there extends forward a large flat plate, gradually narrowed toward

the truncate apex ; this plate is the mentum and its support fused

in one and without trace of transverse suture. The lobes of the

maxillfe are very long and slender. Ligula rather short, the termi-

nal process small, gelatino-membranous, easily distorted but seem-

ingly bilobed at apex. Labial palpi apparently two-jointed, the

basal joint thick, cylindrical, less than twice as long as wide, the

second a little shorter, slender and affixed obliquely. Prothorax

narrowed and sinuate to the base, the hypomera feebly inflexed and

in part visible from the side. Elytra well developed. Abdomen

with the side margins thin and extremely deep. Middle coxae dis-

tant, the mesosternal process broadly rounded at apex, the meta-

sternal acutely angulate but widely separated at tip from the meso-

sternal. Legs slender; tarsi 4-5-5-jointed, slender, the posterior

shorter than the tibiae, with the first joint more or less elongate.

If my interpretation of the structure of the labial palpi be correct

this genus is really very isolated ; the structure of the front before

the antenna?, of the mentum and its support, and the more prolonged

mesosternal process will however, in any event, readily distinguish

it from Myrmedonia. It seems to have some relationship also with

the comparative giants described by Dr. Sharp under the name

Platonica. Our two representatives may be readily separated as

follows : —

Basal joint of the hind tarsi as long as the next two ; blue-black, the pro-

thorax and first three segments of the abdomen very pale yellowish-red.

lauta

Basal joint of the hind tarsi but slightly longer than the second ; black, tlie

elytra slightly picescent lugubl'is

Ti. lauta n. sp. — Rather slender, parallel, convex, minutely reticulate

and rather alutaceous throughout, the elytra dullest ; pale rufo-liavate, the

328 Goleopterological Notices, V.

head rufo-piceous ; elytra and abdominal apex black ; legs very pale ; antennre

feebly infuscate toward tip ; punctures tlirougliout extremely minute, dense

but scarcely visible, rather more distinct on the elytra ; pubescence consisting

of extremely short fine appressed hairs, distributed thickly over the entire

siirface including the abdomen, becoming sparse toward the apex of the latter.

Head as long as wide, not quite as wide as the prothorax, deflexed ; eyes

moderate, prominent, at one-half their length from the base ; depressed epis-

toma polished, glabrous ; antennje extending nearly to the tip of the elytra,

ratlier thick, loose, cylindrical, pubescent but without bristling setje, basal

joint small, stout, pyriform, third longer than the second, obconical, not twice

as long as wide, its apex oblique, four to ten somewhat asymmetrically obconi-

cal, tenth as long as wide, eleventh small, conoidal, not as long as the two

preceding. Prothorax transverse, three-fourths wider than long, widest at

apical third where the sides are strongly rounded, becoming parallel and

straight in basal half; base and apex equal, broadly arcuate; basal angles

obtuse and slightly blunt ; disk rather abruptly declivous laterally, the

median half from base to apex occupied by a very large deep indentation,

which does not differ in sculpture or vestiture. Elytra large, one-half wider

than long, one-half wider and one-half longer than the prothorax ; sides feebly

divergent and straight ; humeri broadly exposed. Abdomen much narrower

than the elytra, parallel, the three basal segments broadly, deeply impressed,

polished and glabrous at base ; fifth shorter than the fourth. Length 2.8 mm. f

width 0.8 mm.

New York.

The male, from which this description is taken, has the posterior

part of the first tergite broad)}', feebly swollen. The second bears

a large strongly elevated tubercle, occupying median third, the

posterior wall of which is vertical, clothed with longer hair and

having its face furrowed from summit to base ; the anterior wall is

likewise vertical and its foot is at the margin of the impression.

The third segment also has a strongly elevated abrupt elevation,

occupying a little more than median third and apical two-thirds, the

upper surface of which is flat and declivous posteriorly throughout,

its anterior wall vertical and deep. I have not seen the female.

IV. luglllblis n. sp. — Moderately stout and convex, somewhat shining;

punctures throughout almost invisible ; pubescence extremely minute, mode-

rately dense ; body black, the elytra feebly piceous ; legs piceous-black, the

tarsi slightly paler ; antennje dark red-brown. Head as long as wide, deflexed,

nearly as wide as the prothorax ; eyes moderate ; antennae thick, extending

to the middle of the elytra, the basal joint thick and pyriform, much shorter

than the next two, second small, a little longer than wide, third large, rather

wider than long, asymmetric, four to ten scaicely differing in width and about

as wide as the apex of tlie third, tenth more than one-third wider than long,

eleventh moderate, conoidal, not quite as long as the two preceding. Pro-

Coleopterological Notices, V. 329

thorax two-thirds wider than long, widest just before the middle where the

sides are broadly, evenly arouate, becoming convergent and straight in basal

half; base and apex equal, the former feebly arcuate, the latter truncate;

basal angles obtuse ; disk with a large and very deep oval excavation, occupy-

ing more than median third and extending from base to apex. Elytra large,

nearly one-half wider and longer than the prothorax, the humeri broadly ex-

posed. Abdomen distinctly narrower than the elytra, the sides straight, just

visibly convergent from the base, the fourth and fifth segments equal in length.

Length (abdomen strongly contracted and reflexed) 2.1 mm. ; width 0.9 mm,

Colorado.

The abdomen is strongly reflexile in both of these species, and

the male described above has large discal processes on the second

and third segments, almost precisely similar to those of the preced-

ing species. So close a resemblance in these peculiar sexual marks

is indeed singular, in view of the great differences in antennal and

tarsal structure and coloration of the body. I think that these

large tuberosities may possibly have some function in limiting the

reflexibility of the abdomen.

AA^EFSIOTA n. gen.

Body parallel, moderately stout and rather feebly convex. Head

oval, longer than wide, v\'ell inserted but borne on a neck which is

not more than one-half as broad as the width across the eyes, the

latter small, at nearly twice their length from the base, the tempora

broadly rounded and convergent behind them. Antennse long,

moderately incrassate, loose, the erect set® extremely short, the

basal joint slightly longer and thicker than the second ; third rather

longer than the second, both elongate, obconical and similar; fourth

to tenth increasing in width, the former longer than wide, the latter

.slightly wider than long ; eleventh long, ogival, finely pointed,

barely as long as the two preceding. Mentiim moderate, trape-

zoidal, the transverse suture at its base almost obsolete but better

marked at the sides because of the lateral impressions of the men-

tum. Ligula stout, short, the apical process well developed, split

to its base, the two lobes subparallel, long and moderately slender.

Labial palpi three-jointed, the basal joint stout, cylindrical, long,

more than twice as long as the second, which is a little narrower

and not longer than wide ; third slender, oblique, not as long as

the first. Maxillary palpi long and well developed, the third joint

obconical, a little longer than the second. Infralateral carina obso-

Akxals N. Y. Acad. Sci., VII, Oct. 1893.— 22

330 Coleopterological Notices, V.

lete except near the base. Prothorax rectangular, the hyporaera

feebly inflexed, wide and greatly visible from the side. Elytra

rather short and transverse. Abdomen wide, the segments short

and equal, the first two finely impressed at base. Metasternal epi-

niera large, extending distinctly behind the elytra. Legs short, the

tarsi 4-5-5-jointed, the posterior very long, almost as long as the

tibife, with the basal joint not as long as the next two, although

elongate, the second fully as long as the last.

The acute mesosternal process, extending one-half the length of

the coxse with its apex free, the smaller eyes, more distant from

the prothorax, narrower neck and many other structural characters

necessitate a separation of this genus from Myrmedonia, although

it is apparently somewhat allied ; it is more closely allied, however,

to Atheta, Thorns. Quadricollis is the type of the genus.

A. quadricolliid n. sp. — Parallel, polished throughout, pale rufo-testa-

ceous, the head piceous ; abdomen blackish except indefinitely Dftward base

and at apex ; legs pale throughout ; antenna black, testaceous toward base ;

head and pronotum very finely sparsely and indistinctly punctate ; elytra

more distinctly and closely, subasperately so ; abdomen throughout finely,

subasi^erately and moderately closely punctate ; pubescence short stifi' and

sparse, longer on the abdomen, where it is still denser beneath. Head rather

narrow, two-thirds as wide as the prothorax, the occiput declivous at base

but not prominent ; antennse attaining the apices of the elytra. Protltorax

transversely rectangular, two-fifths wider than long ; sides parallel, broadly

arcuate anteriorly, broadly sinuate behind the middle; basal angles obtuse

and rounded ; base distinctly wider than the apex, broadly arcuate, the apex

truncate, the angles rather broadly rounded ; disk broadly, feebly convex,

slightly impressed in the middle before the base. Elytra two-thirds wider

than long, slightly shorter than the prothorax, and, at apex, just visibly

wider than that part ; sides feebly convergent to the base, the humeri not

exposed at base, obliquely, feebly rounded ; disk impressed on the suture

behind the scutellum. Abdomen — contracted — not quite as long as the anterior

parts, at base fully as wide as the elytra and behind tlie middle somewhat

wider ; sides parallel, very slightly arcuate ; border moderately thick, not

very deep. Length 3.0 mm. ; width of abdomen 0.9 mm., of the elytra 0.8 mm.

Vancouver Island.

The deep emargination at the base of the first tergite, with its

connecting membrane largely exposed when in a horizontal posi-

tion, shows that the abdomen is strongly reflexile. I can observe

no sexual marks about the single type specimen, which is probably

a female.

The two following species are provisionally attached to Anepsiota

Coleopferological Notices, V. 331

although the posterior tarsi are decidedly shorter with the four basal

joints differing much less in length.

A. insignis Csy. — Bull. Cal. Acad. Sci., I, p. 310 (Oxypoda).

This species is allied rather closely to wickhami, but differs con-

spicuously in the wider and deeper impressions of the abdomen, the

impression of the second tergite, for instance, occupying more than

basal third, while in wickhami it is very narrow and feeble along

the basal margin ; in insignis the prothorax is relatively smaller

and shorter and more strongly punctate, the elytra longer, and the

antennae rather shorter and less incrassate.

A. Trickliaiui n. sp. — Compact, parallel, somewhat stout, feebly convex,

minutely reticulate but strongly shining, the abdomen polished ; dark piceous-

brown, the head and abdomen throughout black ; legs pale, yellowish ; antennae

black, testaceous toward base ; head and pronotum finely, very feebly and

remotely punctulate ; elytra finely but more distinctly, subasperately and

rather closely so ; abdomen finely, feebly and remotely punctulate through-

out ; pubescence rather long, decumbent and sparse. Head nearly circular,

fully three-fourths as wide as the pronotum, strongly convex, feebly, coales-

cently biimpressed just behind the line of the antennae, and also with a small

impression at the center of the vertex between the eyes, the latter moderate,

at more than their length from the base ; antennae attaining the middle of the

elytra, moderately incrassate, the basal joint thicker and much longer than

the second, the latter as long but not quite as thick as the third, both elongate,

fourth a little longer than wide, tenth scarcely visibly wider than long, eleventh

ogival, pointed, as long as the two preceding. Prothorax subquadrate, nearly

one-half wider than long; sides parallel, feebly arcuate, becoming straight

in basal half, distinctly convergent and broadly rounded toward apex ; base

broadly arcuate, distinctly wider than the truncate apex ; basal angles obtuse

and blunt ; disk scarcely impressed. Elytra one-half wider than long, slightly

longer than the prothorax, and, at apex, nearly one-fourth wider ; sides dis-

tinctly divergent and nearly straight from the humeri, which are broadly

rounded and oblique but not much exposed at base ; disk broadly impressed

on the suture throughout. Abdomen a little longer than the anterior parts,

fully as wide as the elytra, the sides parallel and nearly straight ; first three

segments distinctly, subequally but rather narrowly impressed transversely at

base ; fourth and fifth equal in length. Legs moderate ; first joint of the ante-

rior tarsi much shorter than the second. Length 3.7 mm. ; width 0.95 mm.

British Columbia (Stickeen River Canon). Mr. H. F. Wickham.

In this species the elytra are much more developed than in quad-

ricollis ; it also has a more distinctly athetoid appearance. The

mesosternal process is acute, prolonged to the middle of the coxse

and free at apex; the metasternum is not produced at all between

332 Coleopterological Notices, V.

the coxae, and its anterior line is only very feebly arcuate behind

the narrow intercoxal space. The surface between the metasternum

and the mesosternal process is occupied by a large and long subtri-

angular isthmus, moderately compressed anteriorly, where it extends

under the apex of the latter, and subtubercularly elevated at its

centre. This is probably the structure also in qxiadricollis, but in

the type of that species these parts are concealed,

TARPHIOTA n. gen.

Body subparallel, moderately wide, flattened above, opaque.

Head well inserted, very slightly constricted at base, the eyes

rather large and somewhat convex; labrum transverse, truncate;

infralateral carina completely wanting. Antennae slender, filiform,

scarcely visibly enlarged near the apex, setose, moniliform, the

joints generally held slightly asunder by the narrow cylindrical

basal peduncles; first three joints rapidly decreasing in length, the

first thicker ; four to six equal in width, the former slightly elon-

gate-oval, the latter subglobular ; seven to ten feebly transverse and

just visibly increasing in width ; eleventh as long as the two pre-

ceding, conoidal, compressed at tip. Mentum ample, trapezoidal,

the apex rather broadly, feebly produced and feebly sinuato-trun-

cate in the middle. Ligula with a deeply bifid process and two

discal setae, the labial palpi three-jointed, the first and last joints

longer than the intermediate. Maxillary palpi with the third joint

a little longer than the second ; fourth distinct, rather stout, bulbose

at base and apparently with an excessively minute bisetose apical

appendage. Prothorax transversely subquadrate, narrower than

the elytra, the hypomera feebly inflexed, broadly triangular and

greatly visible from the side. Elytra greatly developed. Abdo-

men linear, the first four tergites impressed at base, the first two

rather more strongly ; fifth just visibly longer than the fourth.

CoxsB moderately large, the intermediate extremely approximate

but not contiguous, the mesosternal process long, finely acute and

attenuate, extending two-thirds of their length, the metasternal

process acutely produced beneath the mesosternal, the coxae well

imbedded. Metasternum large, the side-pieces narrow, the inner

margin arcuately approaching close to the elytra posteriorly. Legs

rather short, somewhat stout ; anterior and middle tibiae strongly

spinose externally ; tarsi 4-5-5-jointed, the posterior three-fourths

as long as the tibiae, with the first four joints slightly elongate and

Coleopterological Notices, V. 333

exactly equal, the fifth longer than the two preceding; ungues long,

rather strongly, almost evenly arcuate, divergent and irregular,

being strongly compressed toward the middle, with the inner edge

thinned out and very acute.

This interesting genus is probably more closely related to Alianta

Thorns, than any other, but differs in its spinulose tibiae, longer and

compressed tarsal claws, much more finely acuminate mesosternal

process, less incrassate antennas and many other characters. From

Heterota, Rey, it differs greatly in antennal structure, in the short

basal joint of the hind tarsi, as well as in several features enumerated

under Alianta. From Halobrectha Thorns, it differs in its almost

filiform antennae and other characters. It is confined to the sea-

beaches of the Pacific coast.

T. pallidipes n. sp. — Moderately depressed, intense black throughout,

the antennae piceous-black, paler at base ; legs extremely pale and uniformly

tlavate throughout ; integuments opaque, finely and strongly granulato-reticu-

late, the abdomen less strongly, more coarsely so and somewhat shining ;

anterior parts finely and extremely obsoletely, though rather densely, punc-

tulate, the punctures of the elytra almost wholly obsolete, the abdomen more

strongly and distinctly, evenly and somewhat closely punctate ; pubescence

short, rigid, dense, cinereous and conspicuous, longer, finer and less distinct

on the abdomen. Head as long as wide, slightly but distinctly narrower than

the prothorax, the eyes convex, at rather more than one-half their length from

the base ; tempera behind them feebly convergent and arcuate to the base ;

antennae slender, extending to basal fourth of the elytra. Prothorax scarcely

more than one-third wider than long ; sides subparallel, broadly, feebly arcuate

anteriorly, slightly convergent and nearly straight in basal half; basal angles

slightly obtuse but scarcely at all rounded ; base broadly arcuate, distinctly

wider than the truncate apex ; disk widest slightly before the middle, broadly

flattened toward the middle, the median line sometimes obsoletely impressed.

Elytra large, quadrate, about as long as wide, one-third wider and three-fifths

longer than the prothorax; sides subparallel; humeri rather broadly exposed

at base. Abdomen distinctly narrower than the elytra and slightly wider than

the prothorax, as long as the anterior parts ; sides parallel and nearly straight ;

border moderately thick. Length 2.9 mm. ; width 0.75-0.8 mm.

California (San Francisco to San Diego).

This is one of the characteristic aleocharinides of the southern

California sea-beaches, and the large series in my cabinet indicates

scarcely any variation. It is allied to the Alaskan Tachyusa fuci-

cola Makl., — afterwards referred to Homalota Er. nee Mann., — but

differs in its clear and uniform flavate \e^Q, fucicola having the legs

piceous, with the knees and tarsi paler.

334 Coleopterological Notices, V.

Besides these two species, the genus will probably include Homa-

lota geniculata Mixkl., specimens of which, or of an extremely closely

allied form, I have taken abundantly at San Francisco and San

Diego; it probably follows the general rule, as observed in Mots-

chulskium sinuatocolle, Aleochara sulcicollis and several other

well-known species, and extends along the entire coast from Alaska

to Lower California. This distribution of sea-beach species is

exactly what might be expected, as the cold inshore current from

the north maintains the water at practically the same temperature

throughout. I am at a loss to understand the reference of genicu-

lata to Eudera Fvl. in our most recently published check-list; it

does not remotely resemble the representatives of that genus, which

are related closely to Falagria.

EIJRYPROIVOTA n. gen. *

Body rather broad, convex. Head moderately inserted, the nuchal

constriction concealed; eyes moderate, not prominent, at more than

their own length from the base, the tempora parallel, nearly straight;

labrum short, transverse, truncate. Antennae inserted in small foveae

at a noticeable distance from the eye, feebly incrassate, the basal

joint compressed; second and third subequal, the latter obconical,

more than twice as long as wide ; tenth about as long as wide ;

eleventh conoidal, as long as the preceding two. Maxillary palpi

moderate, the third joint much longer than the second; fourth

oblique, slender, one-half as long as the third. Ligula with a

slender apical process forked at apex, the labial palpi apparently

three-jointed, with the third joint long and slender. Infralateral

carina obsolete. Mentum trapezoidal, the apex feebly emarginate.

Prothorax very large, transversely orbicular, the hind angles very

broadly rounded ; hypomera strongly inflexed, not visible from the

side. Elytra moderate, much narrower than the prothorax. Abdo-

men with the basal segment alone impressed ; second longer than

the first or third ; fifth longer than the fourth. Mesosternal pro-

cess acute, extending slightly beyond the middle of the coxiB, the

latter contiguous, with the acetabula apparently shallow and ill-

defined. Metasternum ample ; the episterna parallel; epimera not

extending beyond the elytra, moderate, the suture almost obsolete,

disappearing under the elytra behind the middle. Legs short; tibiae

moderate, pubescent ; tarsi short, 4-5-5-jointed, the basal joint of

Coleopterological Notices, V. 335

the posterior very short, three-fourths as long as the second ; fifth

fully as long as the two preceding; ungues small, arcuate, simple.

The anterior tarsi seem at first sight to be five-jointed, which

would place this singular genus among the Oxypodates of Rey,

where its very short basal joint of the hind tarsi would completely

isolate it. There can be but little doubt, however, that the appa-

rent fourth joint of the anterior tarsus is rigidly connected with the

fifth, of which it forms the troublesome basal node, and that Eury-

pronota is more appropriately placed in the vicinity of Colpodota,

from which it is readily distinguishable by its very large prothorax

and short basal joint of the tarsi.

E. discreta h. sp. — Black, the pronotum, elytra, legs and antemise

toward base pale testaceous ; integuments polished, sparsely pubescent, the

abdomen bristling with long setae toward apex. Head wider than long, eub-

orbicular, three-fifths as wide as the prothorax, finely, sparsely punctate ;

antennae nearly one-half as long as the body, joints five to eleven equal in

width. Prothorax large, transversely subelliptical in form, nearly one-half

wider than long, the base broadly, evenly arcuate, nearly continuous in cur-

vature with the sides ; apex truncate, the angles very obtuse and rounded ;

disk evenly, broadly convex, with feeble trace of a fine longitudinal impressed

line toward the middle, finely feebly and sparsely punctate. Elytra more

closely and strongly punctate, transverse, parallel, broadly eniarginate at

base, much narrower than the prothorax and with the suture scarcely more

than three-fourths as long as the latter. Abdomen as long as the anterior

parts, as wide as the elytra, parallel, feebly narrowed toward apex, finely,

very sparsely punctate, more closely so toward base ; border moderate. Length

1.7-1.9 mm.; width 0.45-0.5 mm.

Iowa (Cedar Rapids). Dr. E. Brendel,

Readily recognizable by the very large prothorax, which is visibly

larger in the male than in the female. The European Colpodota

fuvgi Grav., possesses some structural features nearly similar to

those of the present species, the pronotum for example being trans-

versely subelliptical, with nearly obsolete hind angles, but the basal

joint of the hind tarsi is much longer, the prothorax not wider than

the elytra, and the fourth and fifth abdominal segments equal.

E. SCOpula n. sp. — Moderately slender and convex, pale flavo-testaeeous,

the head black ; elytra slightly less pale and more brownish ; abdomen with a

blackish spot occupying the fourth segment more or less ; integuments shin-

ing, finely subasperately and closely punctate, the head a little more spai'sely

and the elytra rather more densely and strongly than the pronotum; abdo-

men moderately closely punctate ; pubescence dense, moderately long, even

and erect, longer sparser and decumbent on the abdomen, the latter bristling

336 Coleopterological Notices, V.

with long black sparse sets toward tip. Head wider than long, three-fifths as

wide as the prothorax ; eyes moderate, at their own length from the protho-

rax ; infralateral carina tine and entire ; antennae slender, feebly incrassate,

as long as the prothorax and elytra, bristling with long sparse setse, first joint

a little longer and thicker than the second, the latter slightly longer than the

third, which is nearly twice as long as wide, four to ten feebly obconical. the

latter slightly wider tlian long, eleventh ogival, as long as the two preceding.

Prothorax large, three fourths wider than long, widest at basal third, the sides

broadly arcuate, gradually convergent toward apex ; base slightly wider than

the apex, both broadly arcuate; basal angles obtuse and rounded but not

obliterated ; disk evenly convex, without trace of impression. Elytra as long

as the prothorax and distinctly narrower, one-half wider than long ; sides

very feebly divergent from the base, scarcely visibly arcuate; disk slightly

impressed on the suture behind the scutellum. Abdomen a little longer than

the anterior parts, slightly narrower than the elytra; sides subparallel, becom-

ing gradually convergent behind ; first segment impressed at base, the second

feebly, the third unimpressed ; fifth a little longer than the fourth. Length

1.6 mm.; width 0.4mm.

Rhode Island (Boston Neck).

This species is apparently congeneric with the preceding, although

the vestiture is erect and not decumbent, and the posterior tarsi

shorter, with the two basal joints subequal in length.

COLPOSURA n. gen.

Body narrow, elongate, rather convex, with a somewhat pro-

nounced longitudinal development of abdomen. Head triangular,

widest behind, not inserted, borne on a distinct but somewhat wide

and very short neck, the base nearly in contact with the pronotun)

throughout ; eyes moderate ; infralateral carina completely want-

ing. Antennae rather short, very feebly incrassate, the three basal

joints more or less elongate. Gular sutures straight, convergent

from the base nearly to the support of the mentum, then divergent

to the sides of the buccal opening. Mentum small, transversely

trapezoidal, truncate. Ligula with a small rounded thick median

lobe, apparently perfectly simple, the labial palpi three-jointed, with

the middle joint shortest. Maxillary palpi with the second joint

rather small, slender, the third much longer, thicker, oval, con-

stricted at base ; fourth small, subulate. Prothorax parallel, the

hypomera moderately inflexed, partially visible from the side.

Elytra well developed. Abdomen long, the first tergite rather

Avidely but feebly, the second and third narrowly and obsoletely,

impressed at base, the fifth much longer than the fourth ; sixth

Coleopterological Notices, V. 33 T

segment large and greatly exposed, the ventral plate folded over

dorsally for an unusually great distance ; seventh with rather com-

plex lateral lobes. Coxae moderate in size, the intermediate large,

approximate but not contiguous, the mesosternal process short and

broadly triangular, advancing for one-half their length, the point

free, extremely fine and attenuate. Metasternum ample, not pro-

duced at all between the coxae, there being simply a very feeble

arcuation opposite the coxal opening, the space thence to the meso-

sternum transversely convex. Legs short; tibiae rather slender;

tarsi 4-5-5-jointed, the posterior distinctly shorter than the tibite,

with the first joint moderately elongate, the first four decreasing

distinctly and uniformly in length ; ungues small, arcuate and

simple.

The general structure of this genus allies it intimately with

Amischa Thoms., from which it differs in the more elongate

abdominal segments, much more developed sixth segment, and,

especially, in the structure of the metasternum between the middle

coxje, which in Amischa is produced and acute. It is confined

apparently to the arid mountain regions of the west. The three

species described below may be thus distinguished among them-

selves : —

Elytral suture not in the least longer than the pronotum.

Head at base but slightly narrower than the pronotum praeloilga

Head scarcely two-thirds as wide as the pronotum pa.rviceps

Elytral suture slightly longer than the pronotum angtista.

In reality only the first of these species can be regarded as the

type of Colposura, parviceps and angusta having the metasternum

finely produced between the coxae ; these therefore are much closer

still to Amischa. I have attached them provisionally to Colpo-

sura, however, because of their general resemblance to 2^^'^ioj}ga,

and because they differ from Amischa in their absolutely contigu-

ous middle coxae and more elongate ventral segments.

C. praelonga n. sp. — Narrow, parallel, pale ochreous-yellow throughout,

the head piceous ; first five tergites blackish except at apex ; anterior parts

finely reticulate, moderately shining, finely, feebly, rather closely but almost

imperceptibly punctate, the abdomen more shining, coarsely but feebly, sub-

imbricately sculptured; pubescence throughout fine short and decumbent.

Head triangular, not quite as long as wide, the neck scarcely two-fifths as wide

as the subbasal width, the latter but slightly, though distinctly, less than the

prothorax ; base subtruncate ; basal angles rather narrowly rounded ; sides

338 Coleopterological Notices, V.

thence convergent, the eyes at one-half more than tlieir own length from the

base ; antennae very slightly longer than the head and prothorax, cylindrical,

rather slender and loose, the first two joints elongate, subequal, the third

shorter, obconical, strongly constricted at base and longer than wide, fourth

wider, slightly transverse, five to ten still a little wider, equal, moderately

transverse, eleventh suboval, barely as long as tlie two preceding, the apex

obliquely obtuse and asymmetrically pointed. Prothorax one-third wider than

long ; sides parallel, feebly, evenly arcuate ;' apical angles rounded ; apex

strongly oblique to the neck ; basal angles very obtuse and blunt ; base

broadly arcuate ; disk feebly convex, with a rather large and feeble impres-

sion in the middle before the base. Elytra slightly transverse, just percepti-

bly wider and longer than the prothorax ; sides subparallel ; humeri scarcely

at all exposed ; disk transversely, feebly convex, not impressed. Abdomen

much longer than the anterior parts, very slightly narrower than the elytra ;

sides perfectly parallel and straight to the apex of the fifth segment, the latter

as densely sculptured as the others. Length (abdomen strongly exserted)

2.8 mm. ; width 0.4 mm,

Wyoming (Cheyenne). Mr. H. F. Wickham.

The antebasal abdominal tergite is exserted, corneous and well

developed in this species. A single specimen, probably the female,

the anal segment having an ogival median lobe and quite complex

lateral alse,

C. parviceps n. sp. — Slender, dark brown, the head and abdomen

blackish except at the apices of the segments ; antennae toward base and legs

pale ; anterior parts densely reticulate and feebly shining, the head and pro-

notum rather densely but feebly and indistinctly punctate, the elytra more

distinctly but finely, very densely, granularly punctate ; abdomen more shin-

ing, closely, imbricately pianctate ; pubescence very short, fine, rather dense.

Head small, as long as wide, two-thirds as wide as the prothorax, widest at

base, the neck deeply, acutely constricted across the dorsal surface at the base

of the occiput ; eyes before the middle ; antennae scarcely longer than the

head and prothorax, the third joint scarcely perceptibly shorter than the

second, evenly, strongly obconical, twice as long as wide, outer joints scarcely

increasing in width, loosely connected, distinctly transverse, eleventh sub-

quadrate, as long as the two preceding, obliquely, asymmetrically acuminate

at apex. Prothorax one-half wider than long ; sides subparallel, broadly

evenly and feebly arcuate ; base broadly arcuate, rather wider thaai the apex ;

basal angles distinct but rounded ; disk broadly, strongly convex, broadly

flattened in the middle toward base, just before which there is a distinct sub-

transverse impression. Elytra wider than long, just visibly wider and slightly

longer than the prothorax ; humeri not exposed at base. Abdomen much longer

than the anterior parts, distinctly narrower than the elytra ; sides straight

and parallel to the apex of the fifth segment. Posterior tarsi very slender,

only slightly shorter than the tibiee. Length 2,4 mm. ; width 0.5 mm.

Coleopterological Notices, V. 339

Washington State (Spokane). Mr. Wickhara.

Distinguishable readily from the preceding by its broader form,

more transverse prothorax, smaller and slightly less triangular head,

relatively longer third antennal joint, and darker color. The type

seems to be a female, and the sixth segment is, on the median line,

very nearly as long as the fifth.

C. angusta n. sp. — Slender, dark brown, the head and abdomen darker

except at the apices of the segments ; legs and antennse pale, the latter slightly

infuscate toward tip ; anterior parts finely, densely reticulate and somewhat

dull, the head and pronotum finely and very indistinctly punctulate, the

elytra more distinctly but still very finely and densely so ; abdomen oniformly

and closely, imbricately sculptured throughout, more shining ; pubescence

fine, short and close, less dense on the abdomen. Head nearly as long as wide,

only slightly but distinctly narrower than the prothorax, gradually narrowed

anteriorly from the rounded basal angles, the neck only feebly constricted at

the base of the occiput ; eyes before the middle ; antennje distinctly longer

than the head and prothorax, in structure similar to the preceding species,

the third joint scarcely visibly shorter than the second, outer joints equal in

width, distinctly transverse. Prothorax one-third wider than long ; sides

parallel, broadly, feebly, evenly arcuate ; base broadly arcuate, equal in

width to the apex ; basal angles distinct but rounded ; disk convex, not

flattened in the middle, but witli a deep transversely oval impression before

the base. Elytra scarcely visibly wider but distinctly longer than the pro-

thorax, wider than long, the sides nearly parallel and straight ; humeri

obliquely, feebly rounded, not exposed at base ; disk feebly impressed behind

the scutellum. Abdomen much longer than the anterior parts, distinctly

narrower than the elytra, the sides parallel and straight. Length 2.0 mm. ;

width 0.4 mm.

Nevada (Elko). Mr. Wickham.

This species is smaller than the others and the elytra are longer,

the antennae are also more elongate.

TRICHILSA n. gen.

Body stout, compact, convex, bristling with long sparse hairs.

Head rather small, deflexed, the eyes well developed, at their own

length from the base ; labrum transverse, truncate with rounded

angles. Mandibles moderate, the apices very slender and extremely

acute, simple. Infralateral carina obsolete. Antennae incrassate,

bristling with very long setae, the basal joint thicker and very much

longer than the second, the latter distinctly larger and longer than

the third, both the latter constricted at base ; four to ten gradually

wider, transverse j tenth nearly twice as wide as loogj eleventh

340 Coleopterological Notices, V.

very obtuse, barely as long as the two preceding ; outer joints

somewhat distant and perfoliate. Mentum ample, trapezoidal,

truncate. Maxillary palpi with the third joint very much longer

and thicker than the second; fourth small, very slender, oblique.

Ligula with two minute and subparallel slender processes descend-

ing subvertically from the apex, also with two long setae ; labial

palpi distinctly three-jointed, the first stouter and much longer than

the second ; third slender, nearly as long as the first two. Protho-

rax rather small, transverse, the hypomera strongly iflflexed but in

part visible from the side. Elytra wide, well developed, transverse.

Abdomen broad, parallel, the first three dorsals narrowly and deeply

impressed at base, fourth and fifth equal. Middle coxas very widely

separated, the mesosternal process scarcely more than one-third as

wide as the interval separating them, gradually, feebly deflexed,

abruptly and obtusely pointed or narrowly rounded at apex, ex-

tending through three-fourths of the coxal length, with its apex

superposed upon the broadly rounded apex of the very short and

wide metasternal process. Metasternum well developed, the side-

pieces parallel, the epimera projecting slightly behind the elytra.

Legs short but slender, the tarsi short, slender, distinctly 4-5-5-

jointed, the four basal joints of the posterior equal, the fifth longer

than the preceding two combined ; ungues rather long, slender,

feebly arcuate.

The wide vacant space separating the middle coxee from the sides

of the mesosternal process is probably a constant feature. This

genus belongs near Hoplandria, from which it differs in habitus, in

the parallel sides and distinct basal angles of the prothorax, much

longer antennae with a longer basal joint, entire absence of the

terminal appendage of the fourth palpal joint, and, especially, in

the form of the ligula, which in Hoplandria has a long slender

almost simple terminal process ; it also differs in its narrow,

obtusely pointed mesosternal process and parallel abdomen.

Several of the South and Central American species described

under the name Brachida, will probably have to be referred to

Trichiusa ; in fact the tuberculate external apical angles of the

elytra in Brachida batesi Shp., points almost unmistakably to a

relationship with Hoplandria.' In the European representative of

^ In this connection the small tubercles near the inner apical angles of the

elytra in Brachida notha are remarkable, in view of the four-jointed middle

tar.si.

CoUopterological Notices, V. 341

Brachida notha before me, the middle tarsi are clearly four-jointed,

but they are equally plainly five-jointed in Trichiusa, and the two

genera differ completely in the form and relations of the intermeso-

coxal sclerites.

Although most closely allied to Hoplandria, the species of Tri-

chiusa bear a striking resemblance to Gyrophaena, having the same

stout compact form, but may be known by the long hirsute vesti-

ture and the distinctly five-jointed middle tarsi. Of the following

five species, the first is to be considered the type; they are however

all congeneric: —

Aiiteinise strongly incrassate and stout from the fourth joint, which is strongly

transverse COIupacta

Anteiinffi not so thick, more gradually and feebly incrassate, the fouilh joint

subglobular and only slightly transverse.

Body black throughout.

Prothorax at base nearly as wide as the elytra, the humeri scarcely at

all exposed.

Deflexed apical angles of the prothorax obtuse but only very narrowly

rounded ; elytral vestiture shorter, coarser and subdeeumbent, a few

long erect setae bristling along the sides of the body setigera

Deflexed apical angles rounded ; vestiture throughout the body con-

sisting of long equal closely placed and erect hairs, without longer

bristling setse along the sides pilosa

Prothorax at base narrower than the elytra, the humeri distinctly ex-

posed ; vestiture rather long but decumbent ; lateral setae subobsolete.

robustula

Body pale rufo-testaceoua throughout, with a small pieeous spot toward the

middle of the fourth tergite ; prothorax small ; humeri broadly exposed ;

vestiture very long, sparse bat shaggy parTicollis

The species appear to be rather numerous, and others are perhaps

known at present in cabinets.

T. COmpacta n. sp. — Stout, subparallel, convex, shining, the elytra

polished, black, the antennae toward base, elytra, apical parts of the first

three tergites and legs paler, rufo-testaceous ; head and pronotum very

minutely sparsely punctate, the former with some larger punctures, the

latter with a few scattered large punctures toward base ; elytra rather

coarsely, sparsely and somewhat irregularly punctured ; abdomen sparsely,

minutely granulato-punctate, the impressed parts subimpunctate ; pubescence

rather long, sparse and coarse. Head three-fourths as wide as the protliorax,

wider than long, with a feeble central impression, the antennae longer than

the prothorax and elytra, strongly incrassate. Prothorax a little less than

twice as wide as long ; sides subparallel, arcuate ; base and apex broadly,

strongly arcuate ; apical angles moderately deflexed, broadly rounded ; basal

342 Coleopterological Notices, V.

obtuse but distinct, not blunt; disk strongly convex, finely beaded at tbe

sides and base, very obsoletely impressed in the middle before the base.

Elytra much wider than long, one-fourth wider and two-fifths longer than the

prothorax ; sides parallel, feebly arcuate ; humeri slightly exposed. Abdomen

longer than the anterior parts, very nearly as wide as the elytra ; sides parallel,

just visibly arcuate ; border moderate ; under surface densely, coarsely fulvo-

pubesceut. Legs clothed sparsely with long hairs, the upper sides of the

femora and trochanters polished, impunctate and glabrous. Length 2.0 mm. ;

width 0.7 mm. ^

District of Columbia.

One of the three specimens has the pronotum also rufous, and

another has the pronotum and elytra black ; this latter specimen

has the prothorax somewhat smaller, the elytra fully one-third

wider than that part, and with longer, more erect pubescence. It

is probably a variable species, with considerable sexual disparity

also, although the sexual marks at the apex of the venter are appa-

rently very feeble, and there are none on the tergum in the examples

before me.

T. setigera n. sp. — Moderately stout and convex, thick, subparallel,

blaik, the legs and antennae toward base pale, flavescent ; integuments feebly

reticulate throughout but polished, the head and pronotum finely, sparsely

punctate, the elytra more strongly but simply and not very densely so, the

abdomen sparsely and asperately ; pubescence long and conspicuous. Head

wider than long, only slightly but distinctly narrower than the prothorax ;

eyes rather prominent ; tempora equal to them in length and feebly convergent

and arcuate to the base ; surface flattened ; antennse strongly setose, feebly,

gradually incrassate, about attaining basal third of the elytra, the first joint

much longer than the second, the latter thicker and a little longer than the

third, fourth slightly wider than long, subquadrate, tenth twice as wide as

the fourth and rather strongly transverse. Prothorax transversely subrect-

angular, nearly two-thirds wider than long; sides parallel, broadly arcuate;

base and apex subequal, broadly, strongly arcuate ; basal angles slightly

obtuse and distinct ; disk strongly, evenly convex, very feebly impressed in

the middle toward base. Elytra transverse, about one-fourth wider and nearly

one-half longer than the prothorax ; sides quite perceptibly divergent from

the base ; disk feebly convex. Abdomen, at the middle, as wide as the elytra,

but at base distinctly narrower, a little longer than the anterior parts; sides

parallel and arcuate ; segments short, transverse, all equal in length, the

first three strongly, subequally impressed at base ; border strong. Length

1.65 mm. ; width 0.6 mm.

New Jersey.

Smaller and rather more slender than compacta, to which it is

perhai)s most strongly allied, and with strikingly different autennal

structure.

Coleopferological Notices, V. 343

T. pilosa. n. sp. — Snboval, convex, polished, black throughout ; legs and

antennfe toward base pale ; integuments finely, rather strongly reticulate

throughout ; head and pronotum subimpunctate ; elytra finely, very feebly,

rather closely so, the abdomen finely, very sparsely and granularly ; pubes-

cence even in length, long, erect, moderately dense, conspicuous. Head nearly

as long as wide, small, not more than two- thirds as wide as the prothorax ;

eyes prominent ; tempora longer than the eye, feebly convergent and straight

behind them, rounded at base ; surface broadly, strongly impressed in the

middle ; antennje stout, bristling, but slightly longer than the head and pro-

thorax, the first joint distinctly longer than the second, the latter much longer

than the third, which is scarcely at all longer than wide, constricted at base,

fourth a little wider than long, four to six differing but little, seven to ten

larger, more pubescent, increasing more rapidly in width, tenth about twice

as wide as long, eleventh scarcely as long as the two preceding. Prothorax

fully two-thirds wider than long, sides strongly convergent and arcuate from

base to apex ; base very much wider than the apex, both strongly arcuate ;

basal angles very obtuse but distinct ; disk strongly convex, with three ex-

tremely obsolete parallel median longitudinal impressions, and a very obsolete

transverse impression before the base. Elytra wider than long, one-third

wider and nearly one-half longer than the prothorax ; sides perceptibly

divergent from the base and broadly arcuate ; disk impressed behind the

scutellum. Abdomen in the middle as wide as the elytra, at base very slightly

narrower, as long as the anterior parts. Length 1.4 mm. ; width 0.5 mm.

Rhode Island (Boston Neck).

A very interesting species, wholly different from the preceding

in the form of the prothorax, and from robustula in its narrower

form, erect hirsute vestiture and other structural characters. Two

specimens. The impressions of the pronotum are extremely feeble,

and join the transverse subbasal impression ; in one of the specimens

the longitudinal impressions are obsolete, and at best they can be

only faintly seen.

T. ro1)IIstula n. sp. — Rather stout and convex, suboval, black, the legs

and antennje toward base pale ; integuments densely and strongly reticulate

and alutaceous, the head and abdomen less strongly so and shining ; head

subimpunctate ; pronotum very minutely and feebly so, the elytra more

strongly densely and subasperately but still very finely, the abdomen sparsely,

extremely finely and subasperately; pubescence rather long, decumbent, con-

spicuous, ashy in color, very sparse on the head and abdomen. Head rather

small, convex, impressed in the centre, scarcely three-fourths as wide as the

prothorax, wider than long ; eyes at somewhat more than their own length

from the base, not very prominent, the tempora perfectly parallel and straight

behind them, then broadly rounded to the base ; antennse attaining basal

third of the elytra, the basal joint longer than the second, the latter as long

as the next two, fourth slightly wider than long, outer joints gradually

344 Coleopterological Notices, V.

strougly transverse and perfoliate. Prothorax transversely oval, three-fourths

wider than long, the sides rounded and convergent anteriorly, becoming par-

allel and nearly straight in basal half; base slightly but distinctlj' wider than

the apex, both strongly arcuate ; basal angles obtuse and blunt ; disk strongly

convex, the median line feebly impressed and with a feeble transverse impres-

sion before the base. Elytra transverse, nearly one-half wider and two-fifths

longer than the prothorax ; sides slightly divergent and arcuate from the

humeri, the latter narrowly rounded, rather broadly exnpsed at base ; disk

convex, very broadly, feebly impressed near the scutellum.* Abdomen short,

when moderately contracted not as long as the anterior parts, as wide as the

elytra; border rather strong and thick. Length 1.35 mm.; width 0.55 mm.

Iowa (Cedar Rapids). Dr. E. Brendel.

The large series before me exhibits scarcely any variation, even

in size. A specimen which I took at Galveston, Texas, differs but

very slightly and is probably conspecific.

T. pai'Ticollis n. sp. — Oblong, convex, pale rufo-testaceous throughout,

with the exception of a small piceous cloud on the fourth tergite ; integuments

strongly shining, the head and pronotum subimpunctate, the elytra very

minutely, rather closely but scarcely distinguishably, the abdomen minutely,

rather closely and subasperately ; vestiture long, erect, ashy and bristling

from every part of the body. Head wider than long, strongly imj^ressed in

the centre, fully three-fourths as wide as the prothorax, the eyes rather large,

at scarcely more than their own length from the base ; tempora feebly con-

vergent and arcuate behind them to the very broad neck ; antennae longer,

unusually slender, extending to the middle of the elytra, the first joint longer

than the second, the latter scarcely longer but thicker than the third, four to

six moniliform, subglobular, nearly similar, seven to ten very slightly increas-

ing in width, the tenth slightly transverse, eleventh small, ovoidal, obtusely

acuminate, only one-half longer than the tenth. Prothorax small, transverse,

three-fifths wider than long, the sides strongly convergent, evenly and moder-

ately arcuate from base to apex ; base much broader and more strongly arcuate

than the apex ; basal angles obtuse and blunt ; disk strongly convex, feebly

impressed along the median line toward base only. Elytra strongly transverse,

three-fifths wider and two-fifths longer than the prothorax ; sides but feebly

divergent and slightly arcuate from the humeri, which are right, scarcely

rounded and broadly, transversely exposed at base. Abdomen scarcely as long

as the anterior parts, in the middle as wide as the elytra, but at base distinctly

narrower ; sides parallel and arcuate ; border thick ; posterior margins of

tergites three and four broadly, feebly sinuate in circular arc throughout the

width ; fifth distinctly longer than the fourth, transverse at apex. Posterior

tarsi two-thirds as long as the tibiae, the first four joints equal, the fifth as long

as the preceding two. Length 1.7 mm. ; width 0.65 mm.

Delaware.

This species is somewhat aberrant in its longer, more slender and

less incrassate antennae, and longer fifth ventral segment. It is

Coleopterological Notices, V. 3i5

liowever congeneric without doubt. A single specimen of undeter-

mined sex.

PLATA\DKI.4 n. gen.

Body rather broad, fusiform. Head well inserted, not constricted

at base, the eyes large, oval ; infralateral carina strong, entire.

Antennae rather short, slender, becoming gradually strongly incras-

sate in apical half. Mentum rather large, transversely trapezoidal,

broadly sinuato-truncate at apex. Ligula with a slender process

which is deeply forked at apex, each lobe bearing at its apex a

slender flexible and attenuate appendage. Labial palpi three-jointed,

the basal joint thick, long, cylindrical, obliquely truncate at apex ;

third slender, with a terminal appendage. Maxillary palpi well

developed, the third joint slightly longer than the second, the fourth

long and distinct, with a slender supplementary appendage. Pro-

thorax nearly as in Hoplandria, the h^^poraera strongly inflexed and

invisible from the side. Elytra well developed. Abdomen gradu-

ally narrowed from the base; border strong, the two basal tergites

strongly but rather narrowly impressed at base, the third finely and

very feebly so ; fifth much longer than the fourth ; sixth distinct

and wide. Middle coxte large, oblique, deeply inserted, narrowly

separated, the mesosterual process very long and acutely attenuate,

extending very nearly to the tips of the coxae, with its apex free

and overlapping the apex of the rather short but acute raetasternal

process. Metasternum large, the parapleurae moderately wide, per-

fectly parallel, the epimera extending scarcely at all behind the

elytra. Legs moderate in length, the tibiae slender; tarsi long,

slender, 4-5-5-joiuted, the posterior very nearly as long as the tibiae,

with the basal joint elongate, the first four decreasing rapidly in

length, the fifth somewhat longer and much more slender than the

first; ungues moderately long, slender, rather strongly arcuate and

divaricate. .

The paraglossae are not distinct in the type and appear to be

much less developed than in Hoplandria and Platonica, with which

this genus is to be associated. It differs from the first in the form of

the ligula and structure of the tarsi, and from the latter altogether

in the structure of the mesocoxal sclerites. In Hoiolandria ochracea

the process of the ligula is long and slender, perfectly cylindrical,

but bearing at its extreme tip two very minute subparallel and

apparently setiform appendages, almost exactly as in the Americaa

species of Echidnoglossa.

Aknals N. Y. Acad. Sci., VII, Oct. 1893.— 23

346 Coleopterological Notices, V.

P. mormonica n. sp. — Rather broad, somewhat shining, the ahdomen

polished, dark rufo-piceous in color, the abdomen black throughout ; legs dark,

rufescent ; antennae black, pale toward base ; head and pronotum minutely,

not densely, evenly punctate, the elytra hardly less minutely and rather more

sparsely, but more distinctly so ; abdomen finely, evenly, somewhat closely

punctate throughout, and with somewhat well-marked imbricate sculpture ;

pubescence short, subrecumbent, rather dense but not conspicuous, longer

and sparser on the abdomen. Head small, nearly as Song as wide, slightly

more than one-half as wide as the prothorax, the eyes at about one-half of

their length from the base ; antennae about as long as the head and prothorax,

the first three joints subequal in length, the first stouter, cylindrical, third

one-half longer than the fourth which is distinctly longer than wide, fifth

subquadrate, joints five to ten gradually and rapidly broader, the tenth twice

as wide as long, eleventh as long as the two preceding, moderately pointed at

apex. P)-othorax three-fourths wider than long, the sides rounded and parallel

near the base, then strongly convergent and nearly straight to the apex ; basal

angles very obtuse and blunt ; base broadly evenly and strongly arcuate,

much wider than the subtruncate apex : disk strongly convex, perfectly even,

unimpressed. Elytra two-fifths wider than long, at apex about one-fifth wider

than the prothorax, nearly one-half longer than the latter : humeri obliquely,

feebly rounded externally ; disk broadly, indefinitely impressed behind the

scutellum. Abdomen at base quite distinctly narrower than the elytra, much

longer than the anterior parts. Length 2.7 mm. ; width 0.8 mm.

Utah (Provo). Mr. H. F. Wickhara.

The single type before me is a male, having a long distinct carina

on the fifth tergite and another, only slightly shorter, on the sixth;

elytral angles and second segment not in the least modified.

GNYPETA Thorns.

A genus allied to Tachyusa and comprising but few species at

present.

G. atrollicens n. sp. — Polished, intense black, throughout; base and

apex of the tibiae and tarsi paler ; antennae not paler at base ; pubescence

not very dense, short, stiff, erect, pale brown in color and not conspicuous.

Bead slightly wider than long, finely, sparsely punctate, the vertex broadly,

feebly impressed in the middle; eyes large, somewhat convex, setose, at less

than their own length from the base ; tempora broadly rounded at base to the

very wide neck ; antennae long, slender, feebly incrassate, nearly two-fifths as

long as the body. Prothorax about one-third wider than long, widest at apical

third where the sides are narrowly rounded and somewhat prominent, thence

feebly convergent and distinctly sinuate to the basal angles, the latter obtuse

but not rounded ; base broadly arcuate, wider than the apex ; disk convex,

feebly impressed in a transversely oval discal area before the scutellum.

Elytra nearly one-half wider and longer than the prothorax, moderately trans-

Coleopferological Notices, V. 347

verse, parallel, each broadly feebly and obliquely sigmoid at apex ; humeri

broadly exposed and transverse at base; disk minutely, feebly punctate like

the pronotum, broadly impressed behind the scutellum. Abdomen parallel,

slightly longer than the anterior parts, much narrower than the elytra, rather

wider than the prothorax, finely, feebly, almost evenly, not densely punctate,

the transverse impressions of the three basal segments equal, strong, coarsely

but very sparsely punctate ; border thick, not very deep. Legs rather long

and slender, the tarsi moderate in length. Length 2.6 mm. ; width 0.75 mm.

New York.

Closely resembles the European carbonaria Mann., but differs in

its relatively larger head and smaller prothorax, much more widely

exposed elytral humeri and shorter, much less conspicuous pubes-

cence.

AJfEUROTA n. gen.

Body linear and rather depressed. Head large, transverse at

base, feebly sinuate in the middle, borne on an extremely short,

narrow neck which is less than one-fourth as wide as the base; eyes

large, feebly convex, before the middle ; tempora long, parallel,

feebly arcuate. Antennae widely separated, feebly incrassate, the

second joint nearly as long as the next two; third strongly obconi-

cal, nearly twice as long as wide; tenth slightly wider than long.

Labrum short, truncate. Infralateral carina completely obsolete ;

gular sutures distant, parallel. Mentum very short, strongly trans-

verse, trapezoidal, deeply sinuate at apex, the sinus filled with a

transparent hypoglottis. Maxillary palpi rather small and slender,

the fourth joint minute, oblique. Ligula not distinct, the labial

palpi very small, apparently three-jointed. Prothorax small, cordi-

form, the flanks feebly inflexed and not separated by a fine line;

base finely and distinctly margined, the basal angles sharply defined.

Elytra well developed. Abdomen much shorter than the anterior

parts, the sides straight and almost imperceptibly divergent from

base to apex ; first three segments deeply impressed and impunctate

at base ; fourth and fifth equal and a little longer, unimpressed,

Prosternum moderately developed before the coxse. Middle coxae

separated by one-third of their width, the acetabula deep and well-

defined ; mesosternal process narrowly truncate and extending

slightly beyond the middle. Legs short but rather slender ; tarsi

4-5-5-jointed, the posterior distinctly shorter than the tibiae, Avith

the basal joint moderate, not longer than the next two.

The type of this genus is a minute species having a peculiar

348 Coleopterological Notices, V.

linear depressed form. It is allied to Cardiola, but differs in its

parallel form, in the more elongate second antennal joint, more

prolonged mesosternal process, shorter basal joint of the hind tarsi,

and in having a fine distinct basal margin of the pronotum with

well-defined basal angles. It resembles Cardiola in the absence of

a dividing line between the pronotum and its infl%xed flanks.

A. SlllcifroilS n. sp. — Polished, piceous-black, the aiitennje concolorons

tlirougliout ; elytra and legs dark piceous-brown ; punctures very minute

sparse and snbgraniiliform, except on the abdomen, where they are a little

larger, more distinct and nearly simple or slightly asperate ; pubescence fine

and sparse but rather long and distinct. Head slightly longer and much

wider than the prothorax, the eyes at one-half more than their own length

from the base ; antennae about as long as the head and prothorax; surface

with a coarse deeply excavated groove extending from the apical margin

hehind the middle, there becoming finer to the base. Prothorax fully as long

as wide, widest at apical fourth where the sides are \>iTy strongly rounded,

thence extremely oblique to the neck and distinctly convergent and nearly

straight to the base, the latter truncate; disk transversely convex, with a

deep median sulcus extending from base to apex. Elytra about as large as the

head, distinctly wider and longer than the prothorax, subquadrate, parallel

and straight at the sides ; humeri broadly exposed at base ; disk flat, narrowly

impressed along the suture. Abdomen at base distinctly narrower than the

elytra, but, at apex, subequal in width ; border thin, nearly vertical. Length

1.4 mm.; width 0.3 mm.

Florida.

The deep sulcus of the front may be a sexual peculiarity, in part

at least.

BOLITOCHARIDES.

Antennse 11-Jointed ; tarsi 4-4-5-jointed.

APHELOGLOSSA n. gen.

Body elongate, subparallel and subdepressed. Head rather large,

transverse, narrowed toward base but scarcely constricted, the eyes

rather large, convex, setose and prominent, at less than their own

length from the base; infralateral carina feebly traceable, inter-

rupted and nearly obsolete, antennae rather long, thick, feebly incras-

sate, finely pubescent, bristling with long sparse setae, the basal

joint thicker and much longer than the second or third, the latter

equal, elongate ; fourth subquadrate ; tenth one-third wider than

long ; eleventh ogival, as long as the two preceding. Mentum

Coleopterological Notices, V. 349

larp^e, feebly transverse, trapezoidal, broadly impressed laterally,

the apex strongly emarginate throughout the width. Ligula appa-

rently with a small acuminate apical process; labial palpi very

long, two-jointed, the second about twice as long as the first, slen-

der, somewhat contorted toward apex. Maxillary palpi normal.

Prothorax subparallel, the sides feebly convergent toward base,

and, viewed sublaterally, broadly, strongly sinuate before the basal

angles; hypomera feebly indexed, broadly visible from the side,

entire, broad behind. Elytra well developed, parallel. Abdomen

parallel, the first three segments impressed at base, the fourth and

fifth equal. Anterior coxae moderate; intermediate widely sepa-

rated, the mesosternal process extending to the middle, flat, broadly

rounded at apex, the latter slightly superposed on the tip of the

broad metasternal process ; acetabula deep, sharply defined, Meta-

sternum large and long, the side pieces moderate in width, parallel.

Legs rather short ; tibias clothed densely and evenly with short

stiff inclined setae, with a very long black seta j'ust behind the

middle and another near the tip externally; tarsi 4-4-5 jointed,

slender, the last joint of the anterior and intermediate much longer

than the basal three; posterior much shorter than the tibiae, but

very slender, the four basal joints exactly equal, fifth very long but

distinctly shorter than the first four together ; claws very long,

slender, feebly arcuate.

This genus appears to be allied to the European Diestota, but

differs in the subobsolete infralateral carina of the head, longer, less

incrassate antennae, emarginate mentum, more developed proster-

nura and longer terminal joint of the tarsi. Diedota funebi'ia Shp.,

will probably have to be referred to Apheloglossa.

A. rilfipennis n. sp. — Subparallel, black, basal parts of the aiiteniije

and legs throughout dark rufb-testaceous ; elytra rufous, clouded with blackish

in a broad subtriangular basal area and externally toward apex ; head and

pronotura minutely, strongly granulato-reticulate and perfectly opaque, finely,

closely but almost imperceptibly punctate ; elytra finely reticulate, more aluta-

eeous, minutely, very densely, subasperately but not very plainly punctate,

the abdomen shining, finely, closely, distinctly punctate, more sparsely toward

tip ; pubescence anteriorly short, suberect, dense but not conspicuous, still

denser on the elytra, longer but sparse on the abdomen. Head transverse,

fully four-fifths as wide as the prothorax ; antennae nearly as long as the pro-

thorax and elytra together, very widely distant at base. Prothorax transverse,

three-fifths wider thau long, the sides from above subparallel, broadly, evenly

arcuate ; apex truncate, just visibly narrower than the base, the apical angles

obtuse but distinct from above ; base broadly, feebly arcuate ; basal angles

350 Coleopterological Notices, V.

obtuse but very distinct, not in the least blunt ; disk even, unimpressed,

feebly convex. Elytra transverse, nearly one-third wider and one-half longer

than the prothorax ; sides parallel, feebly arcuate ; humeri broadly exposed

at base; disk flattened, very feebly, broadly impressed on the suture toward

base. Abdomen distinctly longer than the anterior parts, jnuch narrower than

the elytra ; sides parallel, nearly straight ; border thick ; under surface

finely, densely punctate and densely clothed with long decumbent pubescence.

Posterior tarsi three-fourths as long as the tibiae. Length 3.3-3.6 mm. ; width

0.85 mm.

Arizona (Benson). Mr. G. W. Dunn.

The general appearance of this insect suggests a community of

habit with the large Maseocbarae of the same regions.

PLACIJSA Erichs.

The following species perfectly resembles the European compla-

nata, but is narrower, with shorter antennae, and denser and still

more obscure sculpture.

P. taconiae n. sp. — Oblong-elongate, strongly depressed, black through-

out, the legs and antennfe piceous, the elytra frequently paler ; integuments

extremely dull opaque and minutely, densely grauulato-reticnlate, the elytra

rather less opaque, the abdomen shining ; head and pronptum very minutely,

extremely densely and almost undistinguishably punctate, the elytra rather

less minutely, extremely densely and more visibly so, the abdomen distinctly

but very densely punctate, more sparsely near the apex ; pubescence very

minute and scarcely noticeable. Head large, wider than long, distinctly nar-

rower than the prothorax, the surface flat ; antennse one-half longer than the

head, the basal joint a little longer and thicker than the second, the latter

longer and much thicker than the third, which is longer than wide and

strongly constricted at base, four to ten very strongly transverse, seven to ten

equal in width, about twice as wide as lohg, eleventh obtuse, as long as the

preceding two. Prothorax twice as wide as long, the sides just visibly conver-

gent from base to apex and broadly, strongly arcuate ; base broadly, strongly

arcuate, becoming feebly sinuate near the basal angles, which are obtuse but

well maiked ; disk not distinctly impress»^d. Elytra at base a little narrower,

at apex somewhat broader, than the prothorax, about one-third longer ; sides

Straight; humeri completely concealed at base; apex transversely truncate;

disk flat. Abdomen distinctly longer than the anterior parts, evidently nar-

rower than the elytra, the sides subparallel at base, becoming gradually con-

vergent behind ; border rather thick, the first tergite very narrowly and

feebly, the others not perceptibly, impressed at base ; fifth much longer than

the fourth ; ante-basal infraelytral tergite corneous and frequently exserted.

Legs short ; tarsi long, the posterior evidently shorter than the tibise, with the

first joint about as long as the next two. Length 1.9 mm. ; width 0.7 mm.

Coleopferological Notices, V. 351

Washington State (Spokane).

The male fronj which the above description is taken, has the apex

of the sixth termite prolonged in the middle in a short broad trun-

cate ligula, and, between this and each side, there is a slender spine

as long as the ligula, which is gradually and feebly bent toward the

middle. This species was taken by Mr. Wickham, apparently in

considerable numbers.

P. complanafa is said by Mr. Fauvel to occur in Massachusetts ;

among other differences it has the joints of the antennae much less

transverse than tacomae.

SILUSA Erichs.

S« Tesperis n. sp. — Stout, subparallel, rather thick and convex, blackish,

the elytra rather more rufo-piceous ; legs pale; aiitennje dark red-brown,

paler toward base ; integuments strongly shining throughout, the abdomen

liighly polished ; head and pronotum extremely finely and very sparsely

punctate ; elytra strongly densely and subasperately punctate, the abdomen

finely, sparsely so, almost impunctate toward apex ; pubescence rather coarse,

not dense but distinct, very sparse on the abdomen. Head distinctly wider

than long, scarcely four-fifths as wide as the prothorax ; eyes moderate, setose,

at rather less than their length from the base ; antennae long and rather

strongly' incrassate, finely pubescent and bristling with long erect setae, fully

as long as the pronotum and elytra, second joint a little shorter than the

third, the latter elongate but shorter than the first, fourth and fifth feebly

obconical, the former a little longer than wide, the latter as wide as long,

tenth about one-third wider than long, eleventh as long as the two preceding.

Prothorax transverse, three-fifths wider than long, widest at the middle ; sides

broadly arcuate anteriorly, feebly convergent and slightly sinuate toward

base ; apex truncate, slightly narrower than the base, the latter broadly,

distinctly arcuate, becoming straight or very feebly sinuate near the basal

angles, which are obtuse but distinct ; disk broadly convex, with a small

transverse impression in the middle near the base. Elytra nearly one-half

wider than long, just visibly wider and distinctly longer tlian the prothorax ;

sides parallel, very feebly arcuate ; humeri slightly rounded to the pronotum ;

lateral apical sinuations strong ; disk feebly impressed along the suture.

Abdomen at base slighty narrower than the elytra, as long as the anterior

parts ; sides subparallel toward base, feebly convergent behind ; border rather

thick ; first three tergites transversely impressed at base ; fourth and fifth

equal in length. Legs moderate ; first joint of the hind tarsi slightly longer

than the second, the fifth as long as the preceding three ; fourth joint of the

intermediate rather longer than the other three together. Length 2.8 mm. ;

width 0.85 mm.

352 Coleopterological Notices, V.

California (Humboldt Co.).

The labial palpi are very long and slender, composed apparently

of two closely connected joints, forming an obtuse angle, the second

about one-half longer than the first and feeblysacuminate toward

tip. This species agrees tolerably well in form and size with rubi-

ginosa, but the sides of the prothorax are more convergent and

sinuate toward base, and the basal angles are much more pro-

nounced ; the antennae, also, are longer, rather looser and more

incrassate,

Silusa gracilis Sachse, is a more slender parallel and less convex

species, with the second joint of the labial palpi much shorter, not

longer than the first, and somewhat claviform. I have specimens

agreeing very well with the description from Pennsylvania and

Iowa. The following is a species more nearly resembling gracilis,

but much smaller still : —

S. nannla n. sp. — Rather narrow, thick, siibparallel, moderately fin-

ing, the head coarsely, very densely but inconspicuously punctate, the punc-

tures round, very shallow, variolate and somewhat umbillcate ; pronotum

reticulate, finely densely and granularly punctate ; elytra coarsely deeply

and densely so, the punctures normal but giving a somewhat rugose appear-

ance ; abdomen finely but strongly, granularly and rather densely punctured

toward base; pubescence fine, suberect, dense but not conspicuous ; abdomen

with long bristling pubescence toward apex, especially beneath ; color very

dark red-brown, the abdomen feebly rufescent toward base, pale at tip ; legs

pale flavate ; antennje dusky, the basal joints and also the eleventh paler.

Head transverse, fully three-fourths as wide as the prothorax ; eyes moderately

prominent, at tlieir own length from the base ; antennse short, feebly incras-

sate, but slightly longer than the head and prothorax, l)ristling with long

sparse set^e, basal joint much longer and thicker than the second, the latter

longer than the third, which is twice as long as wide, fourth subquadrate,

outer joints becoming strongly transverse, also more and more obconical and

with a corona of dense ashy pubescence, the tenth scarcely twice as wide as

long, eleventh large, conoidal, as long as the two preceding. Prothorax three-

fourths wider than long; sides parallel, almost evenly, distinctly arcuate,

becoming straight and convergent in basal half; base and apex subequal,

the former more arcuate ; basal angles very obtuse but distinct ; basal beaded

edge conspicuous and rather abruptly defined ; disk very obsoletely, broadly

flattened in the middle before tlie base. Elytra subquadrate, one-fourth wider

and fully one-half longer than the prothorax ; sides nearly straiglit, the

humeri slightly visible. Abdomen narrower than the elytra but wider than

the prothorax; sides parallel and nearly straight ; first three segments im-

pressed at base; fifth longer than the fourth. Legs moderate ; posterior tarsi

short, the first two joints oblong, equal. Length 1.7 mm. ; width 0.5 mm.

Coleoplerological Notices, V. 353

Rhode Island (Boston Neck).

The description is drawn from the male, this sex having a small

but rather strong carina near the apex of the fifth dorsal segment,

and another, more feeble, near the apex of the sixth.

There is a remarkable and isolated group of genera inhabiting

the northern beaches of the Pacific coast, having the elytra ex-

tremely short, the tibiae short, completely devoid of lateral spin-

ules, and clothed with long sparse erect hairs, the tarsi very short,

thick, 4-4-5-jointed, the first four of the posterior equal or with the

first just visibly longer than the second, the prothorax narrowed

toward base, with the hypomera feebly inflexed, and the labial palpi

two-jointed. They may be defined as follows : —

Metasternum invisible except between the apices of the middle coxse, whicli

extend to or slightly upon the bases of the posterior ; labial palpi greatly

developed, the basal joint stout, cylindrical, more than twice as long as

the second and as long as the second maxillary ; integuments extremely

opaque and densel}' granulato-reticulate throughout.

Body broad, the abdomen inflated, with no segment at all impressed at

base, the metasternal side-pieces extending behind the elytra ; labrum

very strongly transverse, four times as wide as long, truncate ; mentum

strongly transverse, the apex transversely truncate and with an abrupt

shallow emargination occupying median third, with its bottom transverse;

ligula with a slender deflexed terminal process, the supports of the palpi

separated by a rather wide parallel intermediate piece ; mandibles serru-

late from the internal submedian tooth nearly to the apex ; infralateral

carina partially obsolete LiparoceplialllS

Body narrow, the abdomen not inflated although rather broader than the

anterior parts, the first three segments transversely impressed at base ;

metasternal side-pieces not extending behind the elytra ; labrnm smaller,

twice as wide as long, rounded ; mentum narrower, more rounded at apex,

with a small median emargination in circular arc; process of ligula not

visible in the types ; supports of the labial palpi very approximate,

separated by a slender acute process ; mandibles smaller, not serrulate

within ; infralateral carina feeble but almost entire Diaillota

Metasternum longer, the apices of the intermediate separated from the bases

• of the posterior coxse by a conspicuous interval ; labial palpi long but much

more slender, the basal joint slightly longer and only very slightly thicker

than the second ; eyes extremely small, rudimentary ; integuments more

finely sculptured but dull Alllblopiisa

In these genera the middle coxae are contiguous and their aceta-

bula indefinitely limited behind ; in Liparocephalus and Diaulota the

354 Coleopterological Notices, V.

coxae are all very large but are much smaller in Amblopusa. They

would be allied to Sipalia if the labial palpi were three-jointed and

the middle acetabula sharply defined. 4

LIPAROCEPHAI.IJS Makl.

Of this singular genus there are two species very closely allied

but undoubtedly distinct, as follows : —

Body black throughout ; antemife shorter, barely as long as the head and

prothorax, the outer joints slightly wider than long ; prothorax slightly

transverse, moderately constricted behind, more than twice as long as the

elytra brevipenuis Makl.

Body black, the head and prothorax rufo-testaceous ; antennae distinctly

longer than the head and prothorax, the outer joints not wider than long ;

prothorax strongly transverse, very strongly constricted at base and not

more than twice as long as the elytra cordicollis Lee.

These differences appear to be independent of sex, the sixth ven-

tral being broadly lobed in the middle in the four speciniens which

I have examined ; these specimens are from Washington State and

Queen Charlotte Island.

In placing the genus Liparocephalus in the Paederini, Maklin

evidently had in view only the peculiar dull lustre, a characteristic

feature in Lithocharis and some allied genera; the shape of the

head also reminds us of some p^ederides.

DIAULOTA n. gen.

Although greatly resembling Liparocephalus in general organi-

zation, dense granulose sculpture and large coxae, the species of

Diaulota can be distinguished readily by their narrow parallel body

with undilated abdomen, more convex eyes, shorter antennae, nar-

rower and more elongate head, much less constricted prothorax and

many other characters as given in the table. In my cabinet there

are representatives of two species: —

Tibiae clothed a little more thinly with longer hair ; prothorax relatively

longer, less narrowed behind and much narrower than the elytra.

densissiiua

Tibiae clothed with shorter hair ; pubescence of the upper surface shorter and

less conspicuous ; prothorax at its widest part fully as wide as the elytra.

insolita

D. densissima n. sp. — Black throughout, the anterior parts densely

opaque, the abdomen dull but more alutaceous ; pubescence moderately

Coleopterological Notices, V. 355

dense, fine, erect, not very conspicuous. Head narrow, elongate, the sides

parallel and feebly arcuate ; eyes small, rather coarsely faceted, convex, at

twice their length from the base ; antennse short, one-third longer than the

head, moderately incrassate, the second joint thick, nearly as wide as the

first, much thicker than the third, but slightly longer than wide, third

strongly obconical, slightly longer than wide, four to ten transverse, gradu-

ally wider, eleventh small, conoidal, not as long as the preceding two. Pru-

thorax but very slightly wider than the head and about as long, fully as long

as wide ; sides subparallel, broadly feebly and evenly arcuate, but slightly

more convergent toward base than apex ; disk evenly convex, widest slightly

before the middle ; apex broadly arcuate and just visibly wider than the base.

Elytra short, fully twice as wide as long, one-half as long as the prothorax

and nearly one-fifth wider ; sides feebly convergent from apex to base and

feebly, evenly arcuate. Abdomen tliiek, parallel, fully as wide as the elytra,

nearly twice as long as the anterior parts ; sides nearly straight ; border

thick ; surface transversely and feebly convex. Tibiae moderate in length ;

posterior tarsi barely one-half as long as the tibise, the first four joints very

short, equal ; ungues long, slender, evenly and rather strongly arcuate.

Length 2.7 mm. ; width 0.7 mm.

Alaska (mainland opposite Ft. Wrangel). Mr. H. F. Wickhani.

The sing'le specimen serving as the type is apparently a female.

The other species is nearly similar, but differs in the following

characters : —

D. illSOlita n. sp. — Black throughout and very dull, body narrower.

Protlwrax wider than the head, not quite as long as wide, wider just before the

middle where the sides are broadly arcuate to the apex, distinctly convergent

but not sinuate to the base, which is noticeably narrower than the apex.

Elytra barely twice as wide as long, equal in width to the prothorax and

rather more than one-half as long. Abdomen long, at base as wide as the

elytra; sides straight, gradually divergent behind, so that the apex of the

fourth segment is fully one-third wider than the elytra; border thick. Length

(extended) 2.8 mm.; width 0.6 mm.

Queen Charlotte Island.

The male has the sixth ventral plate prolonged in the middle in

a rounded triangular lobe. In both of these species the last three

joints of the antennae form a kind of club, the ninth and tenth being

longer as well as wider than those preceding them.

The label states that the type specimen was taken near low water

on the beach.

AI»IBLOPlJSA n. gen.

Body extremely slender, parallel, linear, thick and slightly con-

vex. Head oval, parallel, the sides broadly arcuate ; labrum mode-

356 Coleopterological Notices, V.

rately transverse, rounded; infralateral carina obsolete, feebly trace-

able very near the base. Eyes rudinientarv, consisting of five or

six coarse facets in a cluster behind the mandibles. Antennte rather

short, moderately incrassate; outer joints subsimilar, strongly trans-

verse; second cylindrical, as long as the next two and about as

thick. Mentum large, very slightly wider than long, trapezoidal,

the sides feebly sinuate ; apex rather more than one-half as wide as

the base and evenly sinuate in circular arc throughout the width.

Ligula not distinct in the type. Maxillary palpi normal, the third

joint longer than the second. Prothorax narrowed toward base,

the hypomera scarcely inflexed beyond the vertical, large, evanes-

cent far behind the apex. Elytra very short. Abdomen long, par-

allel; first five segments equally impressed at base; fifth longer

than the fourth; sixth distinct, a little narrower than the fifth but

as long as the fourth. Middle coxae contiguous, the mesosternal

process short, triangular, acute, extending barely to the middle.

Metasternal side-pieces rapidly widening behind. Legs very short,

sparsely hairy, the tibiae not at all spinulose ; tarsi very short,

stout, the posterior three-fifths as long as the tibiae, with the first

joint very slightly longer than the second ; ungues very small,

slender, moderatelv arcuate.

A.1)revipes n. sp. — Slender, pale rufo-testaceoas throughout, except the

abdomen above and beneath, which is piceous-black with the apex pale ;

integuments dull and minutely, strongly reticulate, the abdomen less strongly

so and more shining ; anterior parts finely, indistinctly purictate, the abdomen

minutely, not densely but more distinctly so ; pubescence distinct, rather long

and moderately dense. Head convex, ovalo-conoidal, a little longer than wide,

rather longer than the prothorax and fully as wide or a little wider ; antennje

nearly one-half longer than the head. Prothorax very slightly wider than long,

widest at the apical angles, the sides thence moderately convergent and nearly

straight to the basal angles, which are obtuse and slightly blunt ; apex broadly

evenly and rather strongly arcuate, distinctly wider than the base ; disk

broadly Hattened toward the middle. Elytra three-fourths as long as the pro-

thorax, and, at apex, not at all wider ; sides convergent and scarcely arcuate

from apex to base. Abdomen as wide as the elytra, parallel, one-half longer

than the anterior parts ; sides straight ; border moderate, equal ; surface

transversely and feebly convex. Length 1.7 mm. ; width 0.3 mm.

Alaska (Ft. Wrangel). Mr. Wickham.

I have seen only a single specimen, probably a male, the sixth

ventral plate being broadl}', very obtusely lobed behind.

Coleopterological Notices, V. 357

THECTUROTA n. gen.

The body is extremely slender, parallel and subdepressed. Head

large, flat, slightly broader toward base, the eyes small, far before

the middle and slightly prominent. Antennae short, feebly incras-

sate. Mentum small, transverse. Ligula with the apical process

short, cylindrical, thin and perfectly simple, the labial palpi three-

jointed, with the first joint nearly as long as the next two, cylin-

drical; second thinner, longer than wide; third still more slender

and a little longer than the second. Maxillae well developed, the

cardo large, the lobes very small, short, the palpi small, the third

joint but slightly longer than the second, but thick and obconical ;

fourth distinct, oblique. Gular sutures long, straight and parallel ;

infralateral carina wholly obsolete. Prothorax slightly narrowed

toward base, the hypomera visible from the side. Middle coxae

moderately large, contiguous, the mesosternal process very slender

and acute. Metasternum large, the side-pieces rather narrow, par-

allel anteriorly but with the inner line approaching the elytra pos-

teriorly, becoming very acute and narrow at the elytral apex. Legs

very short; tarsi short and stout, plainly 4-4-5-jointed, the first four

joints of the posterior equal, short, thick, the last moderate iu length ;

claws moderate, slender, evenly arcuate.

The extremely small and slender forms referred to this genus

remind us of Hydrosmecta Thorns., but are allied closely to Thec-

tura, and resemble the latter in the peculiar posteriorly attenuate

met-episterna, but differ in the complete absence of any of the

caudal spines so characteristic of that genus. Several of the spe-

cies have a deep transverse pit at the extreme base of the occiput,

and the types of one or two have the head thrown back slightly,

obscuring this part, but it is probably a generic character. In

Hydrosmecta subtilissivia the middle tarsi are five-jointed, and

the gular sutures converge from the base.

The species of Thecturota are among the smallest, and are prob-

ably the most slender, of the Aleocharini ; they will prove to be

tolerably numerous, and the four in my cabinet may be separated

by the following characters : —

Head gradually perceptibly wider behind, the eyes very small and the upper

surface coarsely and distinctly punctured tcnilissillia

Head parallel or very nearly so, tlie eyes larger and the surface finely, feebly

and very indistinctly punctate.

358 Coleopterological Notices, V.

Head and prothorax equal in width and distinctly u^rrower than the elytra.

Elytra distinctly longer than the prothorax ; pubescence denser.

capito

Elytra not longer than the prothorax ; pubescence sparse ; body slightly

more slender demissa.

Head and prothorax subequal in width to the elytra ; pubescence dense ;

elytra much longer than the prothorax exiglia.

I have not been able to discern any marked sexual modifications.

T. tenilissima n. sp. — Linear, strongly shining throughout, dark pice-

ous-brovvn, the pronotum, tip of the abdomen and legs pale tiavate ; antennae

dusky, pale toward base ; pubescence sparse, moderately long, subrecumbent,

coarse, not conspicuous ; head coarsely, sparsely, conspicuously but not very

deeply punctate, the punctures wanting along the median line ; pronotum

and elytra very minutely sparsely and inconspicuously punctate, polished,

not at all reticulate ; abdomen finely, sparsely but more distinctly and sub-

asperately punctured. Htad large, fully as wide as the prothorax and as long

as wide, the sides behind the eyes straight and feebly divergent to basal

fourth, then broadly rounded to the wide neck ; surface with a small deep

elongate impression in the middle just behind the eyes ; antennse one-third

longer than the head, feebly incrassate, the basal joint much longer than the

second, the latter as long as the next two, obconical and nearly twice as long

as wide, fourth to tenth very strongly transverse, close but somewhat perfo-

liate, feebly increasing in width and also in length, eleventh slightly longer

than wide, obtusely rounded at tip, as long as the preceding two. Prothorax

about one-third wider than long, the sides feebly convergent and straight

from near the apex to the obtuse and indistinct basal angles ; base scarcely

as wide as the apex ; disk feebly convex, with a very feeble but entire median

impressed line. Elytra nearly as long as wide, equal in width to the protho-

rax and quite distinctly longer ; sides straight and parallel. Abdomen linear,

rather longer than the anterior parts, at base very slightly narrower, but at

the apex of the fourth segment somewhat wider, than the elytra ; first four

segments feebly impressed at base ; fifth much shorter than the fourth ; sixth

large and distinct. Length (abdomen strongly extended) 1.1 mm. ; width

less than 0.2 mm.

Rhode Island.

The coarse punctures of the large, posteriorly enlarged head,

minute size and linear form, will render the identification of this

species quite certain.

T. capito n. sp. — Piceous to blackish, the legs pale flavate ; antennse

dusky, paler toward base ; integuments feebly shining, the head somewhat

strongly reticulate, very minutely, somewhat closely punctate ; pronotum

and elytra minutely and more densely punctate ; abdomen more asperately ;

pubescence rather dense, sparse and longer on the abdomen. Head fully

Coleopterological Notices, V. 359

as wide as the prothorax, nearly as in the preceding species but rather less

dilated bt^hind and with somewhat larger eyes ; upper surface broadly im-

pressed in the middle anteriorly, and with a small deep impression near the

centre, also with a deep transverse sulcus at the extreme base of the occiput ;

antennae nearly as in tenuissima, but with the fourth joint less transverse,

tenth more than twice as wide as long. Prothorax one-third wider than long ;

sides feebly convergent from apex to base and broadly, feebly arcuate ; basal

angles very obtuse ; disk broadly, feebly impressed along the median line.

Elytra quadrate, distinctly wider and two-filths longer than the prothorax ;

humeri obliquely rounded to the prothorax and slightly visible. Abdomen

scarcely as long as the anterior parts, very little narrower than the elytra;

sides subparallel, the tip of the fourth segment scarcely visibly wider ; fifth

slightly longer than the fourth; border moderate. Length 1.1 mm.; width

0.2 mm.

Texas (Galveston).

This infinitesimal animal seems to be widely diflfused, for I have

taken specimens, either of it or of a species so similar as to be

almost uudistinguishable with luy present material, also at Austin

and Waco in Te.xas, and Tu9Son in Arizona. The transverse

sulcus at the occipital base receives the anterior margin of the

pronotum when the head is thrown back.

T. demissa n.,sp. — Minute, slender, rather convex, strongly shining

throughout, the abdomen still more polished, black, the pronotum feebly

picescent, the elytra still paler, rufescent ; antennae black, piceous toward

base ; legs pale flavate ; anterior parts finely but not strongly reticulate,

minutely, subobsoletely punctate, the elytra scarcely more distinctly so, the

abdomen very minutely, sparsely and subgranularly ; pubescence short, rather

sparse, not conspicuous, very sparse on the abdomen. Head large, rather

longer than wide, fully as wide as the prothorax, the sides parallel ; eyes at a

little more than their own length from the base ; surface deeply concave along

the middle anteriorly, and with a deep conspicuous fovea at the centre ;

antennae short, feebly incrassate, scarcely visibly longer than the head and

prothorax, the basal joint thicker and nearly as long as the next two, second

longer than wide and nearly as long as the third and fourth, constricted at

base, outer joints distinctly transverse. Prothorax not more than one-fourth

wider than long ; sides broadly arcuate, becoming gradually almost straight

and slightly convergent in about basal half; apical angles deflexed and

broadly rounded ; basal obtuse and more narrowly rounded ; base broadly

arcuate, scarcely as wide as the apex ; disk convex, narrowly and rather

strongly impressed along the median line throughout. Elytra much shorter

than wide, toward apex distinctly wider than the prothorax, not longer, the

sides feebly divergent from the slightly exposed humeri. Abdomen, contracted,

subequal to the anterior parts, at base distinctly narrower than the elytra ;

sides straight and just perceptibly divergent from the base, the apex of the

360 Coleopterological Notices, V.

fifth appreciably wider than tlie base; fourth and fifth segments equal in

length and each distinctly longer than one to three. Legs very short, stout.

Length 1.0 mm. ; width scarcely 0.2 mm.

New York (Catskill Mts.). Mr. H. H. Smith.

The more polished, more sparsely pubescent integuments, less

transverse prothorax and shorter elytra, will readily distinguish

this species from capito.

T. exiglia n. sp. — Extremely slender, parallel and linear, moderately

convex, shining, minutely, rather closely but not conspicuously punctate, the

pubescence ratlier long, close and distinct, streaming obliquely on the elytra

and transversely on the pronotum ; color rather pale brown, the head piceous,

the abdomen black toward apex ; legs and antennae toward base pale, flaves-

cent. Head large, rather convex, deeply impressed just before its centre ;

sides parallel ; eyes at fully one-half more than their own length from the

base ; antennae nearly as in demissa. Prothorax one-third wider than long ;

sides feebly convergent and straight from apex to base ; base and apex broadly,

strongly arcuate, the former slightly the narrower ; disk strongly, rather

widely impressed along the median line. E/ijtia quadrate, barely wider than

long, one-third longer but scarcely perceptibly wider than the prothorax ;

sides parallel, straight ; humeri very sligbtly exposed. Abdomen, extended,

a little longer than the anterior parts, at base perceptibly narrower than the

elytra ; sides straight ; apex of the fifth segment distinctly wider than the

first and fully as wide as tlie elytra ; first four tergites impressed at base,

the impressions successively and uniformly decreasing in depth and width.

Legs very short, stout. Length 1.3 mm. ; width 0.2 mm.

Iowa (Cedar Rapids). Dr. E. Brendel.

Almost as extremely slender as tenuissima, but with a minutely

punctate and parallel head. I can find only a single specimen

amongst my material, and the sex of the type is undetermined.

THECTIIRA Thoms.

The anterior and middle tarsi in this genus are distinctly four-

jointed, the posterior five-jointed, the basal joints very short and

equal and the last joint long ; its position among the allies of

Colpodota is therefore erroneous, and it should be transferred to

the neighborhood of Homalota Mann , with which how^ever it can-

not be united because of its three-jointed labial palpi. The follow-

ing species is closely related to cuispidata Er. : —

T. aniericana n. sp. — Slender, parallel, linear, very strongly depressed,

piceous-black ; antennaj toward base and legs pale ; anterior parts dull and

alutaceous, the head strongly, sparsely punctured, the pronotum and elytra

Coleopterological Notices, V. 361

excessively finely and indistinctly so, tlie abdomen with a few scattered aspe-

rate punctures ; pubescence fine, rather dense but not conspicuous, longer and

sparse on tlie abdomen. Head very nearly as wide as the prothorax, wider

than long, the sides parallel ; eyes well developed, convex and prominent ;

antennse distinctly incrassate, short, barely as long as the head and prothorax,

the last joint as long as the two preceding. Prothorax one-third wider than

long, the sides just visibly convergent and almost straight from near the apex

to the rounded basal angles ; base arcuate ; disk broadly, feebly impressed

along the middle. Elytra fully as long as wide, not wider than the protho-

rax and one-half longer, parallel and straight at the sides ; humeri exposed.

Abdomen as long as the anterior parts, slightly narrower than the elytra,

parallel and straight at the sides, the border strong. Length 1.6 mm. ;

width 0.3 mm.

New York.

The middle spine of the sixth dorsal plate is as well developed as

in cuspidata, but is more inclined backward ; its apex is notched

anteriorly, the posterior spur more abruptly bent forward over the

tip than in cuapidata ; lateral spines small and distinct. The male

has, at the middle of the second tergite, two small tubercles distant

by one-half the width, on the third two rather stronger tubercles

distant by two-thirds the width, on the fourth two much feebler

tubercles distant by barely one-third the width, the fifth broadly

impressed in the middle. A single male.

This species differs from cuspidata in its slightly more incrassate

antennae with longer terminal joint, in its wider and distinctly more

transverse prothorax, and in the position of the tubercles of the

fourth dorsal, which are distant by one-half the discal width in the

European species; also by the more posteriorly inclined terminal

spine, somewhat differently modified at apex, and in the entire

absence of the discal impression of the sixth segment at the base

of the spine.

OLIGIJROTA n. gen.

Body minute, parallel, subdepressed. Head large, quadrate, the

eyes moderate, convex and prominent, before the middle; infra-

lateral carina completely obsolete. Antennae short, incrassate, the

basal joint large, thick ; second shorter ; second and third strongly

constricted at base, the former much the larger ; outer joints trans-

verse. Mentum very small, transversely trapezoidal. Ligula

with a minute, apparently simple terminal process and two stiff

bristles, the palpi well developed, three-jointed, the first thick, elon-

Akxals N. Y. Acad. Sci., VII, Oct. ISg"^.— 24

362 Goleopterological Notices, V.

gate, cylindrical, the second narrower and much shorter; third

slender, as long as the first. Maxillary lobes small, short, thick,

ciliate within ; the palpi small, with the third joint longer than the

second ; fourth minute. Gular sutures perfectly straight and par-

allel throughout. Prothorax quadrate, the hypomera narrow but

entire, feebly inflexed and distinct from the side. Elytra mode-

i"ate. Abdomen normal, parallel, not at all spinose at apex, the

-four basal segments feebly, narrowly impressed at base; fourth

-and fifth equal and longer than the others. Prosternnm rather

well developed before the coxje. Intermediate coxae small, approxi-

.mate, the mesosternal process short, angulate. Metasternal side-

pieces wide, parallel, the epimera well developed, disappearing under

the elytra at basal third. Legs and tarsi very short, the tarsi 4-4-5-

jointed, the basal joint of the middle and posterior slightly longer

than the second ; last longer ; claws small, slender.

This genus is allied to Thectura, but differs in the absence of

caudal spines, in its shorter elytra and metasternum, and especially

in the conformation of the metaparapleurie, which in Thectura are

quite remarkable, being narrow and parallel anteriorly, but with

the inner margin oblique toward the elytra behind, so that they

become exceedingly narrow at the elytral apex, the epimera invis-

ible. In both of these genera the coxas are unusually small for the

present tribe.

O. piisio n. sp. — Parallel, pale piceons-brown, the head and abdomen

darker, blackish, the tip of the latter, legs and antennje paler ; integuments

rather shining, coarsely and feebly reticulate, not densely and almost imper-

ceptibly punctate throughout ; pubescence rather long and sparse but distinct.

Head just perceptibly wider an-d distinctly longer than the prothorax, as long

as wide, the neck two-thirds as wide ; sides parallel ; surface with a small

impression in the middle between the eyes ; antennae one-half longer than the

head. Prothorax nearly one-third wider than long ; sides parallel, nearly

straight, the apical and basal angles rounded ; base and apex about equal,

arcuate ; disk narrowly and feebly impressed along tlie median line. Eli/tra

much wider than long, very slightly wider and longer than the prothorax ;

sides nearly parallel and straight. Abdomen shorter than the anterior parts,

slightly narrower than the elytra, parallel and straight at the sides ; border

rather fine. Legs rather stout. Length 1.2 mm. ; width 0.2 mm.

Indiana.

One of the most minute of the Bolitocharides, and probably

occurring under bark ; the unique type is apparently a female.

Coleopterological Notices, V. 363

LEPTUSA Kraatz.

, The first species here described seems to be truly congeneric

with the European anaiis, but has the prothorax much smaller and

narrower, the elvtral humeri being exposed at base.

I/, 'brevicollis n. sp. — S!end«i-, subparallel, rather convex, shining,

the abdomen still more polished, dark red-brown ; legs paler, moi-e flavate ;

antenna concolorous ; head piceous ; abdomen brighter rufous, with a black

subapical cloud ; head and pronotum very feebly punctulate ; elytra coarsely,

somewhat rugosely but not at all asperately so ; abdomen finely and sparsely ;

pubescence sparse but rather long, subrecumbent and distinct. Head orbicu-

lar, convex, much wider than long, distinctly narrower than the prothorax,

the eyes rather large and prominent, at less than their own length from the

base ; labrum truncate ; antennae as long as the pronotum and elytra, moder-

ately incrassate, second and third joints elongate, subequal, fourth obconical,

as long as wide, four to ten gradually wider, the latter nearly twice as wide

as long, eleventh rather small, not longer than the two preceding. Prothorax

transverse, fully three-fourths wider than long, widest at two-fifths from the

apex where the sides are narrowly rounded, thence convergent and feebly

arcuate to the apex, equally convergent and broadly sinuate to the basal

angles, which are obtuse but sharp, the apical deflexed but also not at all

rounded ; hypomera extending to the apex ; base transverse, equal to the

apex ; disk strongly convex, extremely obsoletely impressed along the middle

and transversely before the scutellum. Elytra large, parallel, slightly wider

than long, one-fourth wider and one-half longer than the prothorax ; sides

nearly straight ; humeri exjjosed at base ; suture finely beaded. Abdomen

parallel and straight at the sides, much narrower than the elytra, as wide as

the prothorax ; only the first three segments strongly impressed at base ; fifth

distinctly longer than the fourth. Legs rather long, slender ; posterior tarsi

short, with the first joint distinctly longer than the second. Length 2.1 mm. ;

width 0.55 mm.

Pennsylvania.

The type is a male, the fifth dorsal plate having a small feeble

longitudinal carina in the middle. The labial palpi are apparently

three-jointed, but the first is small and anchylosed to the second,

which is subequal to the more slender third ; the process of the

ligula is slender, parallel and simple at apex. The metasternum is

large and long, with the side-pieces very narrow and parallel —

quite different from the form occurring in Sipalia. The middle

acetabula are deep and sharply limited by an acute beaded edge,

except for the extremely short distance between the apices of the

sternal processes, of which the mesosternal is acutely produced to

the middle with its apex slightly blunted, the coxa? quite appre-

364 Coleopterological Notices, V.

ciably separated. This spenies seems to be somewhat intermediate

between Leptusa and Silusa.

The two following species are similar in structure throughout

and possibly belong to Leptusa, but differ considerably in facies

from hrevicollis, because of the much longer prothorax and the

densely opaque and lustreless anterior parts of the body ; they

may be defined as follows : —

Stouter, the anterior parts of the body velvety bliie-black and perfectly

opaque ; fourth and fifth ventral segments exactly equal in length.

opaca

Much more slender, the head and pronotum opaque, brown, the elytra rather

more shining ; fifth ventral a little longer than the fourth ...seiuiniteilS

In oipaca the conformation of the parts about the middle coxae is

exactly as in hreticollis, but the mesosternal process extends as

far behind as the apex of the metasternal ; it is however free and

not continuous on the same level.

Li. opaca n. sp. — Stout, blackish, opaque, the abdomen shining, rufo-

testaceous, the last two segments black ; legs pale, the posterior femora clouded

with piceous toward apex ; antennae blackish, pale toward base and with the

eleventh joint abruptly pale flavate ; head and pronotum completely lustreless,

not punctate, minutely and extremely densely granulato-reticulate through-

out ; elytra sericeous, indistinctly punctate ; abdomen ratlier strongly, not

very densely punctate, sparsely so toward apex ; anterior parts finely, very

indistinctly pubescent, the abdomen more sparsely but distinctly so. Head

more than three-fourths as wide as the prothorax, the eyes rather prominent,

at less than their length from the base ; antennae about as long as the pro-

thorax and elytra, strongly, gradually increasing in width, the outer joints

strongly transverse, eleventh longer than the two preceding. Prothorax two-

fifths wider than long, widest at anterior third where the sides are strongly

rounded and prominent, thence strongly convergent and distinctly sinuate to

the base, which is transversely arcuate and equal in width to the apex ; basal

angles obti;se but scarcely at all blunt ; disk convex, even, not impressed.

Elytra slightly wider than the prothorax and about one-third longer, parallel,

the sides nearly straight ; humeri slightly exposed at base. Abdomen a little

longer than the anterior parts, about as wide as the prothorax ; sides parallel,

scarcely visibly arcuate ; border thick. Length 2.0 mm. ; width 0.6 mm.

Pennsylvania.

The four specimens in my cabinet do not indicate any variation.

Lit seminitens n. sp. — Slender, parallel, dark red-brown, the abdomen

bright rufo-testaceous, with a subapical black cloud ; legs pale ; antennae

blackish, paler toward base, the eleventh joint abruptly pale ; head and pro-

notum opaque, feebly pubescent, impunctate and minutely, very densely gran-

Coleo]}ierological Notices, V. 365

ulato-reticulate ; elytra feebly shining, indistinctly punctate, feebly pubes-

,cent; abdomen polished, strongly, closely punctate toward base, very minutely

and remotely so toward tip, the pubescence longer, sparse but distinct. Head

transverse, very nearly as wide as the prothorax, the eyes small, at more

than their length from the base ; antennae feebly incrassate, rather longer

than the prothorax and elytra, the outer joints but slightly wider than long.

Prothorax large, one-fourth wider than long, widest and rather strongly rounded

at apical third, the 'sides strongly and distinctly sinuate in more than basal

half; base broadly arcuate, rather narrower than the apex; basal angles

obtuse, scarcely, at all blunt ; disk broadly convex, even, with a very feebly

impressed line along the middle. Elytra slightly wider than long, equal iu

width to the prothorax and but very slightly longer ; sides parallel ; humeri

slightly exposed at base. Abdonifn fully two-thirds longer than the anterior

parts, perfectly parallel, about as wide as the elytra. Posterior tarsi about

two-thirds as long as the tibiaa. Length 2.4 mm. ; width 0.5 mm.

New York.

Evidently allied to the preceding, but distinguishable very readily

by the slender and more parallel form, longer abdomen, more shining

elytra, longer and more slender antennae, smaller eyes and several

other structural features.

ASTHEXESITA n. gen.

Body minute, parallel, not ver}^ narrow, somewhat convex. Head

long, ovo-conoidal, convex, the eyes very small, at some distance

from the mandibles and antennae, and at fully twice their own

length from the base; labrum rather elongate, rounded; infra-

lateral carina very feeble, subobsolete. Antennae long, evenly and

gradually incrassate, the second joint nearly as long as the next

two; third strongly obconical ; four to ten equal in length, trans-

verse, gradually wider, the tenth more than twice as wide as long;

eleventh ovoidal, as long as the preceding two. Mentum trape-

zoidal, truncate. Ligula with a slender terminal process which is

distinctly bifid at apex ; labial palpi three-jointed. Maxillary palpi

normal, the third joint much longer than the second, the fourth very

minute, oblique. Prothorax narrowed and sinuate toward base,

nearly as in Leptusa. Elytra well developed, broadly emarginate

at apex, the suture not distinctly beaded. Abdomen very feebly

narrowed toward base, the first three segments deeply impressed

at base ; fifth very much shorter than the fourth, the latter not at

all impressed. Middle coxse and sterna as in Leptusa. Metasternal

side-pieces narrow, parallel. Legs short ; tarsi stout, 4-4-5-jointed,

366 Coleopterological Notices, V.

the posterior but little more than one-half as long- as the tibiae, with

the first joint just visibly longer than the second or third, the latter

scarcely longer than wide.

This genus is closely allied to Leptusa, but differs in the longer

antennae with much shorter third joint, in the longer head and

labrum, in the bifid ligula and very short fifth segment of the

abdomen, which is not perceptibly more than one-half as long as

the fourth ; also in the more robust tarsi and minute size.

A. pallens n. sp. — Pale rnfo-testaceous throiighout, the fourth dorsal

segment piceous-black ; iutegnmeiits slightly reticulate, feebly shining, the

abdomen polished ; head, pronotum aiad elytra veiy minutely and scarcely

visibly piinctulate ; abdomen more sparsely but not distinctly so ; pubescence

sj>arse but long, coarse and distinct. Head rather longer than wide, a little

narrower but longer than the prothorax, convex, even ; sides parallel and

evenly arcuate ; antennje as long as the head, prothorax and elytra, pale

throughout. Prothorax one-third wider than long, the sides broadly, feebly

arcuate, more convergent and nearly straight in basal half, the basal angles

very obtuse but not rounded ; apical deflexed, right — viewed laterally — not

rounded ; base very feebly arcuate, slightly narrower than the apex ; disk

convex and declivous at the sides, more flattened above, with a broad region

along the middle which is very feebly impressed, more distinctly so toward

base and densely granulato-reticulate and opaque throughout. Eliftra dis-

tinctly wider than long, parallel and straight at the sides, just visibly longer

and fully one-fourth wider than the prothorax, the humeri distinctly exposed

and transverse at base. Abdomen as long as the anterior parts, behind the

middle as wide as the elytra, but at base distinctly narrower ; sides scarcely

perceptibly arcuate ; border moderate, not thick ; surface transversely convex

behind. Legs short. Length 1.25 mm. ; width 0.3 mm.

Florida.

In the male the fifth ventral plate is transverse at apex, Avith a

short acute spicule projecting horizontally from the middle of the

ed<re, the sixth lobed in the middle.

"s^'

SIPALIA Rey.

This genus seems to be distinct from Leptusa although closely

allied.

S. frontalis n. sj). — Parallel, thick, rather convex, shining, the abdomen

polished, rufo-testaceous, the antennae dusky except at base ; abdomen pice-

ous, the fifth segment and apices of the first three, pale ; pubescence coarse,

sparse but rather long and distinct ; head and pronotum extremely finely,

feebly but rather closely punctulate ; elytra coarsely, more sparsely and

asperately punctate ; abdomen sparsely so. Head orbicular, convex, slightly

Coleopterological Notices, V. 367

narrower than the prothorax, fully as long as wide ; eyes at fully one-half

more than their own length from the base ; clypeus rather prolonged in front

of the antennjB, truncate ; antennae nearly one-half as long as the body, dis-

tinctly incrassate, second and third joints elongate, subequal, fourth to tenth

very evenly, gradually increasing in width, the latter fully twice as wide as

long, eleventh conoidal, longer than the preceding two. Prothorax rather

large, strongly and evenly convex, but slightly wider than long, widest at

apical third, the sides thence distinctly convergent and feebly sinuate to the

base, the latter transverse and slightly narrower than the apex ; basal angles

obtuse but not at all blunt ; apical deflexed but not at all rounded ; hypomera

continuous to the apex, Elytra at apex as wide as the pi'othorax, gradually,

feebly narrowed toward base, the two bases equal; suture just perceptibly

shorter than the pronotutn ; sides feebly arcuate ; apex transverse and slightly

trisinuate ; disk rather convex, not impressed on the suture, the latter finely

beaded. Abdomen as wide as the elytra, as long as the anterior parts, parallel,

the sides nearly straight ; border moderate ; first three segments strongly im-

pressed and more coarsely punctate at base ; fourth scarcely at all impressed ;

fifth distinctly shorter than the fourth. Legs moderate ; posterior tarsi slender,

nearly two-thirds as long as the tibiae, the first joint slightly but distinctly

longer than the second. Length 2.0 mm. ; width 0.5 mm.

California.

This species is allied closely to reitteri Epp., but the latter has

the first four segments equally impressed at base and the fifth fully

as long as the fourth. In frontalis the labial palpi have the first

joint shorter than the second, the third nearly as long as the first

two, the metaparapleurae very wide, with the inner margin rapidly

divergent from the elytra, the epimera large, occupying nearly the

entire width behind and disappearing under the elytra near basal

third. The mesosternal process is long, acute, extending two-thirds

the length of the very narrowl}^ separated coxsb, the apex free, the

metasternal process short, subangulate, not attaining the meso-

sternal, the acetabula rather shallow behind but limited every-

where by a fine beaded edge, except along the very short inter-

sternal isthmus.

BRYOBIOTA n. gen.

. Body parallel and linear, somewhat thick and convex. Head

fully as wide as the prothorax and as long as wide, with the sides

parallel; basal angles right but rounded; base transverse; neck

scarcely one-half as wide as the head ; labrum twice as wide as

long, truncate; eyes small, anterior; infralateral carina completely

obsolete. Antennae long, the second joint longer than the third.

368 Coleopterological Notices, V.

Mentum transverse, trapezoidal, the apex feebly sinuato-truncate.

Ligula with a simple slender process; labial palpi three-jointed,

the first more robust than the second and twice as long, third thin,

not quite as long as the first. Maxillary palpi nearly normal, the

second joint slightly arcuate and much shorter than the third ;

fourth very small. Prothorax narrowed toward base, the apical

angles deflexed and very broadly rounded ; hypomera distinct lat-

erally, not attaining the apex ; base of the pronotum superposed

on the base of the elytra and transversely arched in the middle.

Elytra very short. Abdomen long, parallel, as wide as the elytra,

the first four segments impressed at base ; fourth and fifth equal.

Middle coxte not distinctly separated, the acetabula being simply

very feeble impressions posteriorly and not at all limited, the meso-

sternal process short but acutely triangular. Legs moderate ; tibiae

rather slender, clothed with rather coarse pubescence, without trace

of spinules ; tarsi 4-4-5-jointed, the posterior rather slender, with

the basal joint as long as the next two ; ungues small, slender,

arcuate.

Bryobiota is allied to Sipalia, but differs in the feebly impressed

and undefined middle coxal cavities. From Arena Fvl. it may be

known at once by the distinct but rather wide neck and longer

antennre. It is represented as far as known to me by a single spe-

cies from the southern salt beaches of California: —

B. 1)icolor Csy.— Bull. Cal. Acad. Sci., I, 1885, p. 311 (Phytosns).

This species is not at all allied to Phytosus, the tibiae being com-

pletely devoid of spinules.

BOLITOCHARA Mann.

A widely diffused genus, decidedly isolated in general habitus and

coloration from all those which are structurally most closelv allied

to it. It can always be recognized, among the Bolitocharides, by

the coarse subasperate sculpture and variegated elytra. Our spe-

cies as far as known may be separated as follows : —

Elytra very much longer tlian the prothorax.

Prothorax distinctly narrower than the elytra. Pacific coast.

Elytra coarsely and less densely sculptured, usually dark only externally

toward apex and sometimes near the scutellnm.

Abdomen sparsely punctured notata Milkl.

Abdomen densely punctured, especially toward base.

californica Csy.

Coleopterological Notices, V. 369

Elytra more finely and densely punctate, black, each elytron pale at base

except near the scntellum, also narrowly along the suture in apical

two-thirds and along the apical margin ; abdomen finely, sparsely

punctate Iligrilia Csy.

Prothorax on the disk as wide as the base of the elytra. Atlantic coast.

Abdomen coarsely, densely punctate ; carina of the fifth male tergite long

and strong blaiicliarcli n. sp.

Adomen finely, densely punctate ; carina of the fifth teigite extremely

small, reduced to a small point near apical fourth.

niar$;iiiel]a u. sp.

Elytra shorter ; " Fliigeldecken wenig langer als das Halsschild."

alternans Sachse.

SiJusa aUernans, from its indicated size and coloration, seems to

be more appropriately placed in the present genus, but I have not

been able to identify it ; Silusa gracilis is however a true Silusa,

and it may be possible therefore that Dr. Sachse was not mistaken

as to the genus of aUernans, but the coloration is certainly not at

all distinctive of Silusa, viz., "rufo-picea, elytronim angulo exte-

riore abdomineque ante apicem nigricantibus." Of notata Miikl. I

have several specimens, taken by Mr. Wickham at Fort Wrangel

and in Vancouver ; on the whole, it is a larger, stouter form than

californica, and differs specifically in abdominal sculpture.

Homalota trimacidata Er. is possibly a Bolitochara allied to

hlanchardi, but joints five to tea of the antenna? are said to be

transverse in that species.

B. tllaiicliardi. — Pale flavo-testaceous, the head, pronotum except

feebly along the sides and base, elytra toward the external apical angles and

feebly near the scutellum, abdomen feebly at the middle near the bases of the

first three segments, throughout the fourth and in basal two-thirds of the fifth,

blackish ; antennae fuscous, the last joint somewhat less dark, the first four

pale flavate ; head feebly but distinctly, rather sparsely punctate, the pro-

notum and elytra strongly asperately and densely so, the latter slightly the

more coarsely ; abdomen strongly and closely bat not so densely punctate ;

pubescence fine, very short, not conspicuous. Head orbicular, convex, about

as long as wide, nearly three-fourths as wide as the prothorax ; eyes very

large, separated from the base by about one-half of their own length ; antennae

distinctly longer than the head and prothorax, incrassate, first three joints

elongate, third a little shorter than the second, tenth scarcely wider than long,

a little longer and less transverse than the ninth. Prothorax transverse, four-

fifths wider than long, widest and broadly subangulate at basal third ; sides

convergent and feebly arcuate thence to the apex ; base broadly arcuate, much

wider than the apex ; basal angles distinct but blunt ; disk convex, strongly

biimpressed in the middle near the base. Elytra slightly transverse, a little

3*10 Goleopterological Notices. V.

wider and mucli longer than tlie prothorax ; humeri obliquely rounded to the

prothorax. Abdomen long, at base distinctly narrower than the elytra ; sides

straight, feebly convergent throughout ; first three segments strongly im-

pressed at base ; fourth and fifth equal in length. Legs moderate. Length

2.4-3.5 mm. ; width 0.8 mm.

Xew York ; Iowa.

The male has the fifth tergite strongly carinate almost through-

out its length, the sixth dorsal feebly emarginate, the emargination

coarsely and obtusely crenulate. The species is dedicated with

pleasure to Mr. Frederick Blanchard of Lowell, Mass.

B. marginella. — Pale flavate, the head blackish ; elytra clouded with

piceous toward each external apical angle, the dark area always separated

from the apex by a distinct pale margin ; abdomen with a large subapical

blackish cloud ; antennae slightly infuscate toward apex ; integuments feebly

shining, the abdomen more polished ; head extremely minutely, sparsely

punctate, the prothorax finely, densely, subasperately so, the elytra more

strongly but still not very coarsely, densely punctate, the abdomen finely,

evenly and densely so ; pubescence fine, very short, not conspicuous. Head

orbicular, much wider than long ; eyes rather large, at one-half their length

from the base ; antennae rather short, about as long as the head and protho-

rax, third joint but little shorter than the second, outer joints strongly trans-

verse, closely perfoliate, tenth a little longer than the ninth, almost twice as

wide as long, eleventh conoidal, pointed rather longer than the two preceding.

Prothorax four-fifths wider than long, the sides parallel and feebly arcuate in

basal two-thirds, then gradually rounded and convergent to the apex ; base

slightly wider than the truncate apex, broadly arcuate, becoming straight

toward the angles which are obtuse and distinctly rounded ; disk feebly im-

pressed in the middle before the base, the impression not geminate. Elytra

distinctly transverse, slightly wider and much longer than the prothorax,

the humeri obliquely, strongly rounded to the base of the latter; sides just

visibly divergent, very feebly arcuate ; disk slightly impressed behind the

Bcutellum. Abdomen long, at base distinctly narrower than the elytra ; sides

straight and feebly convergent throughout; fifth segment much longer than

the fourth. Length 2.0-2.6 mm. ; width 0.7 mm.

New York (Catskill Mts.).

The male has a very small raised point on the fifth tergite near

apical fourth ; the sixth also has a very small dorsal elevation and

has the apex broadly emarginate and obtusely crenulate. This spe-

cies is much smaller than hlanchardi, and may be distinguished at

once by its finer sculpture.

Coleopterological Notices, V. 3*11

THINUSA n. gen.

Body very narrow, parallel and linear, thick, opaque. Head

wider than long, slightly narrower than the prothorax ; sides par-

allel toward base, the latter very broad and inserted within the

prothorax ; eyes moderate ; labrum truncate. Antennae short,

moderately iucrassate, the second joint as long as the next two.

Mentum transverse, trapezoidal, truncate. Maxillary palpi normal,

the second joint shorter than the third ; labial three-jointed, the first

joint apparently longer than the second. Infralateral ridge obso-

lete. Prothorax strongly narrowed from near the apex to the base;

hypomera feebly inflexed, rather narrow but extending almost to

the apex ; base of the pronotum superposed over the base of the

elytra and broadly, feebly arched throughout the width. Elytra

very short. Abdomen long, linear, as wide as the elytra, the first

four segments impressed at base; fifth much longer than the fourth;

sixth visible. Cox« very large, the anterior extremely so; middle

cavities deep, distinctly limited, approaching extremely close to the

posterior margin. Metasternum very short, the side-pieces narrow,

parallel to the oblique edge of the elytra. Legs stout ; tibiae very

short, the anterior and middle spinulose externally ; tarsi short,

stout, the first four joints of the posterior subequal.

This genus is allied to Phytosus but distinguished at once by its

very short elytra and extremely abbreviated metasternum. From

Actosus it may be known by the much narrower and more lineate

body, the narrower met-episterna, which are perfectly parallel to

the edge of the elytra, and by the much less developed met-epimera.

The single species is common about San Francisco.

T. maritiiua Csy.— Bull. Cal. Acad. Sci., I, 1885, p. 312 (Phytosus).

The European Actosus halticus must form part of the genus

Phytosus, or else be regarded as the type of a new genus allied

to Thinusa ; it is altogether generically distinct from Ac. nigriven-

tris — the type of Actosus — in its narrow parallel metasternal side-

pieces, these being very strongly triangular in nigriventris. All

of these genera differ, in addition, from Thinusa, in having the

infralateral carina of the head distinct toward base and the hypo-

mera much more dilated behind.

372 Coleopterological Notices, V.

Hygronomides.

Antennse 11-jointed ; tarsi 4-4-4-jointed.

GYROIVYCHA u. gen.

Body elongate, linear and depressed. Head moderate in size,

constricted at base, the neck usually about one-half as wide ; eyes

large, distant from the base, sparsely setose; labrum short, trun-

cate; infralateral carina obsolete, feebly traceable anteriorl3\ An-

tennae very long, slender, subfiliform or feebly and gradually incras-

sate from near the base; basal joint elongate, longer than the second

or third, the latter elongate and subequal ; outer joints seldom at

all transverse. Mentum moderate, transversely trapezoidal, trun-

cate, impressed on the disk at each side. Ligula with a stout par-

allel apical process, the labial palpi moderate, three-jointed, the basal

joint the longest and thickest, cylindrical. Maxillary palpi moder-

ate, the third joint but slightly longer than the second ; fourth small.

Mandibles simple and acute at apex. Prothorax oblong, feebly nar-

rowed behind and broadly sinuate — viewed sublaterally — the apical

angles abruptly and feebly deflexed ; hypomera feebly inflexed, very

distinct from the side, entire. Elytra large, long and well devel-

oped. Abdomen elongate and linear, the fifth segment usually

distinctly longer than the fourth ; first four segments more or less

impressed at base. Middle coxse contiguous, the mesosternal pro-

cess very acute, prolonged to the middle, the metasternal process

extremely short, broadly angulate, scarcely at all entering between

the coxae, the distance from its tip to a point beneath the free apex

of the mesosternal occupied by a fine linear compressed and earini-

form isthmus; acetabula tolerably well defined behind. Metaster-

num large, the side-pieces narrow, linear and parallel ; epimera

rather small, disappearing under the elytra well behind the middle.

Legs rather short; anterior tibite normal ; tarsi short, 4-4-4-jointed,

the first joint of the posterior more or less elongate, generally not

quite as long as the next two and subequal to the last, the latter

rather stout but scarcely at all incrassate ; ungues well developed,

divergent, abruptly bent downward behind the middle and some-

what broadened at the point of flexure.

This very interesting genus is the American representative of

the European Hygronoma, and is probably rather extensive, ex-

tending from the Atlantic to the Pacific and occurrinir in the hiu-h-

Coleopterological Notices, V. 313

lands and lowlands. In outward appearance it bears a striking

resemblance to Calodera, but possesses none of the essential char-

acters of that genus. From Hygronoma it is at once distinguish-

able by the very long subfiliform antennae and abruptly bent tarsal

claws, resembling Diglossa in this latter peculiarity.

Gyronycha is allied also to the Central American Bamona of

Sharp, but differs in its much more slender linear and depressed

form, wider neck, longer, relatively narrower elytra and short

tarsi, with a distinctly shorter basal joint. It is probable that

some of the species assigned to Bamona by Dr. Sharp should be

referred rather to the present genus; in fact the sexual spine near

the base of the abdomen in Bam. robitsta Shp., proves almost con-

clusively that this at any rate is a Gyronycha, The falagrioid

form of the body in Bamona is especially alluded to in the original

diagnosis, but in Gyronycha there is no vestige of such a facies.

The following species will serve as types of the genus: —

Head narrower than tlie prothorax ; anteunje very long.

Third antennal joint obconical, elongate, fully as long as the second.

Dorsal plates two and three broadly impressed and subimpunctate at base

through about one-half of their length ; male with dorsal carinse.

Prothorax wider than long, laterally rounded and narrowed in apical

third Talens

Prothorax nearly as long as wide, rounded and narrowed only in apical

fourth ; body much narrower ; antennae more slender texaua.

Dorsal plates throughout feebly impressed only very near the base, flat

and strongly, evenly punctate throughout; male apparently without

abdominal carinse ol>SCIira

Third antennal joint shorter than the second fusciceps

Head equal in width to the prothorax ; antennae more incrassate.

Antennae long, the outer joints barely perceptibly wider than long ; third

elongate, slightly shorter tlfan the second lilieata

Antennae much shorter, more compact and strongly incrassate, not much

longer than the head and prothorax ; secoiTd antennal joint subequal

in length to the next two together ; eyes much smaller.

Neck rather more than one-half as wide as the head atteniiata

Neck slightly more than one-third as wide as the head pei'tenuis

G, Taleus n. sp. — Parallel, depressed, somewhat wider than usual,

piceous-black, the elytra paler, clouded near the scutellum ; abdomen dark

rufo-testaceous, clouded with blackish near the tip ; legs very pale throughout ;

antennae black, paler toward base ; head and pronotum extremely minutely,

closely punctate, feebly shining, the former more sparsely punctate toward

the front ; elytra rather less finely, more strongly and much more excessively

densely punctate and alutaceous ; abdomen with the first four segments closely,

314 Coleopterological Notices, V.

comparatively coarsely and conspicuously punctate in apical half, impunctate

in the polished basal impressions, fifth very remotely, subasperately punctate ;

pubescence very short, extremely dense on the elytra, transverse on the pro-

notum, longer but very sparse on the abdomen. Hmd slightly wider than

long, a little narrower than the prothorax ; eyes large, rather prominent, at

their own length from the base ; neck fully one-half as wide as the head ;

antennae two-fifths as long as the body, slender, all the joints longer than

wide, first three equal, very long, together constituting one-third of its length,

remainder obconical, except the eleventh which is pointed and not as long as

the two preceding. Prothorax slightly wider than long, the sides rounded

anteriorly almost continuously around the apex from apical third, feebly

convergent and straight thence to the basal angles which are obtuse and not

rounded ; base broadly arcuate ; disk broadly, feebly flattened in the middle

toward base. Elytra two-fifths wider and one-half longer than the prothorax,

subquadrate ; sides parallel and straight ; humeri exposed at base ; surface

fiat, strongly impressed on tlie suture toward base. Abdomen quite distinctly

narrower than the elytra, as long as the anterior parts ; sides parallel and

straight, feebly convergent near the apex ; border moderate ; fifth segment

much longer than the fourth. Length 3.8 mm. ; width 0.75 mm.

Texas (Austin).

The type is a male, having a strongly elevated carina in apical

half of the first visible dorsal plate, the carina projecting posteriorly

to a slight extent ; the fifth segment also has a small feeble carina

in the middle near the base. One specimen.

G. texana n. sp. — Narrow, parallel, pale brown, the head blackish;

abdomen more rufous, with a large feeble blackish cloud near the apex ; legs

very pale ; antennje blackish, paler toward base ; head and pronotum very

minutely, densely punctate, strongly shining ; elytra more coarsely and aspe-

rately but not quite so densely punctate, rather shining ; abdomen polished,

finely, moderately closely punctate, very sparsely so on the fifth segment ;

anterior parts finely, very densely, the abdomen much more coarsely and

sparsely, pubescent. Head distinctly shorted and narrower than the protho-

rax, slightly wider than long, the neck one-half as wide ; eyes large, at fully

their own length from the base ; antennae slender, a little longer than the

prothorax and elytra, the first joint much longer than the second or third, the

latter elongate, equal, fourth to tenth obconical, longer than wide, eleventh

slender, pointed, scarcely as long as the two preceding. Prothorax nearly as

long as wide, rounded near the apex, the latter feebly arcuate in the middle ;

sides feebly convergent and straight from apical fourth to the basal angles,

the latter obtuse but not rounded ; base very feebly arcuate, subtruncate ; disk

almost imperceptibly impressed along the median line and feebly flattened in

the middle before the base. Elytra quadrate, one-third wider and longer than

the prothorax ; sides parallel and nearly straight ; humeri distinctly exposed

at base ; disk narrowly, strongly impressed on the suture toward base. Abdo-

men scarcely wider than the prothorax, a little longer than the anterior parts,

Coleopterological Notices, V. 375

parallel and straight at the sides except near the apex ; border rather thick ;

fifth segment longer. Legs short ; posterior tibiae swollen toward apex, slender

near the base, the tarsi scarcely three-fifths as long. Length 2.7-3.0 mm. ;

width 0.55-0.6 mm.

Texas (Austin).

The male has a strongly elevated carina at the middle of the first

dorsal, becoming gradually feebler and ending at the basal impres-

sion ; at apex it projects slightly beyond the margin ; there is also

a very small carina near the base of the fifth.

In both of these species the fourth antennal joint is distinctly

shorter than the fifth ; in obscura, however, these two joints are

subequal. The present species, although closely allied to valens,

differs greatly in the longer basal joint of the antennae, form of the

prothorax, sparser elytral and much finer and sparser abdominal

punctuation, and in its smaller size and more slender form. Three

males, exhibiting no variation.

G. OlJSClira n. sp. — Depressed, rather wide, blackish, the pronotiim

slightly, the elytra distinctly, pale ; abdomen scarcely paler toward base bat

with the tip flavescent ; legs pale ; antennas not distinctly paler toward base ;

anterior parts extremely minutely, rather densely punctate, somewhat strongly

shining, finely, densely pubescent ; abdomen more strongly, rather closely,

evenly punctate, with longer and somewhat sparse but distinct pubescence.

Head a little wider than long, distinctly shorter but only slightly narrower

than the prothorax, the neck one-half as wide as the width across the eyes,

the latter at fully their own length from the base ; antennae slender, fully as

long as the prothorax and elytra, equal in width from the fourth joint, the

first three greatly elongate, the first longer, second and third equal, fourth

scarcely visibly shorter than the fifth, fourth to tenth obconical, longer than

wide, the tenth fully as long as wide, eleventh slender, pointed, not quite as

long as the two preceding. Prothorax very slightly wider than long, the sides

rounded and convergent in apical third, the apex more feebly arcuate in the

middle ; sides straight and just visibly convergent in basal two-thirds, the

base broadly, distinctly arcuate ; basal angles obtuse and distinct ; disk even,

not perceptibly impressed. Elytra quadrate, one-third longer and wider than

the prothorax, parallel and straight at the sides, with the humeri exposed at

base ; disk impressed on the suture behind the scutellum. Abdomen distinctly

narrower than the elytra, as long as the anterior parts ; sides parallel and

evenly, just visibly arcuate ; border strong ; first foiir segments equal and

nearly flat ; fifth one-half longer. Length 2.9 mm. ; width 0.G5 mm.

California (Pomona). Mr. H. C. Fall.

The truncate sixth ventral plate would seem to indicate the male,

but there is no trace of the dorsal carinte so well developed in the

two preceding species, and the present differs also in its more

316 Coleopterological Notices, V.

pubescent abdomen, with the basal impressions much shorter or

finer, extending- only very slightly upon the disk of the plates

Two specimens.

G, flisciceps 11. sp. — Slender, depressed, pale rufo-testaceous, tlie head

darker, piceous ; elytra more flavate ; antennse dusky, pale toward base ; legs

very pale ; head shining, minutely, densely and distinctly punctate ; pro-

iiotum fe(jhly alutaceous, somewhat reticulate, very minutely and not dis-

tinctly punctate ; elytra feebly alutaceous, minutely, very densely and rather

more distinctly, the abdomen minutely feebly and sparsely, punctate ; pubes-

cence fine, short, dense, especially on the elytra ; abdomen very sparsely but

more coarsely pubescent. Head nearly as long as wide, distinctly shorter and

slightly narrower than the prothorax, the neck two-thirds of the width across

the eyes, the latter moderate, at one-half more than their length from the base ;

vertex just visibly, longitudinally impressed in the middle; antennae long,

very feebly incrassate, fully as long as the prothorax and elytra, the basal

joint longer and slightly thicker than the second, the latter subcylindrical

and perceptibly longer than the third, which is obconical and elongate, four

to ten obconical, loosely connected, deeply concave at ajiex as usual, the fourth

as long as wide, shorter than the fifth, tenth very slightly wider than long,

eleventh rather large, fully as long as the two preceding. Prothorax nearly

quadrate, rounded at the sides and narrowed in apical third, the apex broadly,

feebly arcuate ; sides feebly convergent and straight in basal two-thirds ; base

feebly arcuate, the angles nearly right and very pronounced ; disk feebly,

transversely convex, scarcely at all impressed. Elytra quadrate, parallel and

straight at the sides, one-third wider and longer than the prothorax, the

humeri exposed at base; suture narrowly impressed behind the scutellum.

Abdomen as long as the anterior parts, distinctly narrower than the elytra, the

sides parallel and straight, the first three segments with large deep impres-

sions, the fourth scarcely impressed and much shorter than the fifth ; basal

segments with the raised basal part broadly emarginate posteriorly in nearly

circular arc. Length 2.7 mm. ; width 0.55 mm.

New York (Catskills) ; North Carolina (Asheville).

Readily distinguishable from those which precede by the less

punctate abdomen, shorter third antennal joint and smaller eyes.

I can see no sexual marks of prominence in my three specimens.

G. liueata n. sp. — Narrow, linear and depressed, rufo-piceous, shining,

the abdominal apex, legs and basal parts of the antennae pale; head and

pronotum feebly reticulate, minutely, closely but not very distinctly punctate,

the elytra more asperately and distinctly but scarcely more densely so, the

abdomen sparsely, extremely minutely and feebly ; pubescence anteriorly

very short, dense, on the abdomen v^a-y sparse as usual, long and fimbriate at

the apices of the basal segments. Head large, fully as wide as the prothorax,

nearly as long as wide, the neck very broad, fully three-fourths as wide ; eyes

Coleopterological Notices; V. 377

rather small, at fully three-fourths more than their length from the base ;

front with a feeble and posteriorly angulate flat depression, extending from

the middle to the apex ; antennae long, distinctly incrassate, two-tiftbs as long

as the body, the three basal joints gradually decreasing in length, four to ten

obconical, the latter nearly one-half wider than long, eleventh well developed.

Frothorax about as long as wide, the sides very feebly convergent and straight

in basal three-fourths ; apex and base equally and distinctly arcuate, the

former slightly the narrower ; basal angles obtuse but rather distinct ; disk

just visibly impressed along the median line except near the base and apex.

Elytra quadrate, parallel and straight at the sides, one-fourth wider and

longer than the prothorax ; humeri narrowly exposed ; disk flat, rather

widely impressed on the suture near the scutellum. Abdomen linear, parallel

and straight at the sides, distinctly narrower than the elytra, the first two

segments strongly and widely, the third and fourth very feebly, transversely,

impressed at base, the raised basal part emarginate in circular arc ; fifth

nearly one-half longer than the fourth. Length 2.4 mm. ; width 0.45 mm.

Nevada (Reno).

The two specimens serving as types appear to be females. This

species is quite distinct from any of those described above by the

larger head, smaller eyes, more incrassate — though not much

shorter — antennae, wider neck and relatively somewhat smaller

elytra.

G. atteniiata Csy.— Bull. Cal. Acad. Sci., 1, 1885, p. 30G (Calodera).

This species is nearly similar to lineata, but has the antennae

shorter and much stouter and the prothorax quite distinctly" wider

than long. Length 2.0 mm. ; width 0.45 mm.

G. pertenilis n. sp. — Narrow, linear, depressed, piceous-black, the pro-

notum and elytra slightly paler ; legs and basal parts and tip of the abdo-

men pale flavate ; integuments highly polished, the punctuation excessively

minute, sparse, the pubescence of the head and pronotum rather long, sparse,

of the elytra a little shorter and closer, of the abdomen very sparse, the erect

setae sparsely bristling along the sides. Head rather convex, unimpressed,

fully as wide as the prothorax, nearly as long as wide, the neck distinctly less

than one-half as wide as the width across the eyes, the latter small, at about

twice their length from the base, the basal angles broadly rounded ; antenns

short, scarcely longer than the head and prothorax, distinctly incrassate, the

first joint a little longer and much thicker than the second, the latter as long

as the next two, tenth nearly one-half wider than long, the eleventh large,

rather wider than the tenth, pointed near the apex and much longer than the

two preceding. Prothorax nearly as long as wide, broadly rounded and con-

vergent at the sides in apical third, the sides thence feebly convergent and

just visibly sinuate to the distinct basal angles ; base broadly arcuate, fully

three-fourths wider than the apex ; disk broadly, feebly convex, even. Elytra

Annals N. Y. Acad. Sci., VII, Oct. 1893.— 25

378 Coleopterological Notices, V.

rather longer than wide, one-fourth wider and one-tliird longer than the

prothorax, parallel and straight at the sides, the humeri distinctly exposed ;

suture deeply, narrowly impressed just behind the scutellum. Abdomen

scarcely as long as the anterior parts, linear, distinctly narrower than the

elytra, the sides parallel and straight ; first four segments narrowly deeply

and equally impressed at base, the impressions more coarsely punctate ; fifth

much longer than the fourth. Length 1.45 ram. ; width 0.25 mm.

New Jersey.

The single specimen seems to be a female. This species is by far

the most minute of the genus, and is somewhat aberrant in its

sparser punctuation.

BAMOXA Sharp.

A small Californian species is referred to this genus, but not

without some doubt. It cannot be associated generically with

Gyronycha, although the tarsi are four-jointed throughout and the

tarsal claws similarly abruptly bent downward, for the reason that

it differs in having a distinctly falagrioid habitus and in its short

transverse abdominal segments ; it also differs conspicuously in the

structure of the sterna between the middle coxag. The mesosternum

is only very slightly produced between the coxae and forms a very

short broad and gradually depressed cusp; behind this cusp the

narrow but perceptible space between the coxae is depressed, form-

ing a low rounded ridge, gradually regaining the level of the meta-

sternum behind but without trace of a metasternal process defined

by an acute line or bead; the coxal cavities are gradually less im-

pressed and not well defined behind. At a very short distance

behind the mesosternal cusp there appears, however, to be a fine

transverse suture in the depressed ridge, and this may constitute

the anterior limit of the metasternura proper. The posterior tarsi

are rather long and slender, but the neck seems to be much broader

and the antennae shorter than in the Central American forms.

Although I am not sure, therefore, of the generic identity of the

present species, its discovery is interesting in proving that these

}>eculiar hygrononioid species form an important element in the

Aleocharini of America, and include at least several distinct genera.

B. falliana n. sp. — Narrow, slightly convex, polished throughout,

piceous-black, the antennae black, paler at base ; legs pale, brownish-flavate

throughout ; head finely, very sparsely punctulate ; pronotum equally minutely

but much more closely, evenly punctulate, each puncture having a very minute

stout decumbent hair quite different from those of any other part of the body,

Coleopterological Notices, V. 379

the punctures and peculiar vestiture abruptly and completely disappearing

near all the edges ; elytra and abdomen minutely sparsely and indistinctly

punctulate ; pubescence of the head and elytra stiff and rather long, distinct

although not very dense, of the abdomen longer, the pronotum with a series

of three or four long erect setae along the lateral edges. Head rather longer

than wide, at the eyes almost imperceptibly wider than the prothorax ; sides

subparallel ; base transverse ; angles rounded ; neck two-fifths as wide as the

perocular width, the eyes large, at their own length from the base ; antennae

short, scarcely longer than the head and prothorax, the two basal joints equal

in length, the first slightly thicker, second elongate, as long as the next

two, third obconical, longer than wide, four to ten mutually almost perfectly

similar, scarcely at all increasing in width, distinctly obtrapezoidal, one-half

wider than long, eleventh conoidal, as long as the two preceding. Prothorax

as long as wide, widest at apical third, where the sides are strongly rounded

and somewhat prominent, thence rapidly oblique to the neck and distinctly

convergent, broadly, feebly sinuate to the base ; apical angles strongly de-

flexed, rounded ; basal also deflexed, slightly obtuse but not at all rounded ;

base very feebly arcuate ; disk perfectly even, without trace of impression.

Elytra quadrate, about as long as wide, not quite twice as wide as the protho-

rax and about two-fifths longer ; sides subparallel and straight ; humeri very

broadly exposed and transverse at base ; disk feebly convex. Abdomen short

and broad, scarcely as long as the anterior parts, narrower than the elytra

but much wider than the prothorax ; sides parallel, slightly convergent at

the fifth segment, which is but slightly longer than the fourth ; first three

impressed and polished at base. Legs slender, the posterior tarsi slender ;

fully three-fourths as long as the tibiae, with the basal joint rather longer

than the next two. Length 1.75 mm. ; width 0.4 mm.

California (Los Angeles Co.). Mr. H. C. Fall.

This is one of the most interesting aleocharinides which has

been discovered on the Pacific slope, although quite insignificant in

point of size.

Oligotides.

Antennae 10-jointed ; tarsi 4-4-4-joiuted.

SOMATIUM Woll.

The following species differs from the European Jiavicoy^ne in its

more convex surface, much sparser pubescence and coarser, more

uneven imbricate sculpture of the elytra.

S. nugator n. sp. — Oval, convex, polished, black, the legs dark brown-

ish-rufous ; antenuffi still paler throughout ; head almost impunctate, remain-

der of the upper surface very minutely, sparsely punctate, the elytra and

abdomen very coarsely imbricate, the latter becoming smooth toward tip ;

380 Coleopterological Notices, V.

pubescence rather long, stiff and sparse, snbrecnmbent but longer erect and

bristling on the abdomen, especially beneath. Head small, evenly convex ;

eyes large, not prominent ; anteiinse about one-half longer than the head, the

second joint longer and narrower than the first and as long as the next two,

the latter not wider, five to seven gradually wider, eight and nine subeqiial,

abruptly strongly transverse, twice as wide as long ; tenth short, bluntly

ogival. Protkorax twice as wide as long, the sides strongly divergent from

apex to base, evenly arcuate and continuous in curvature with the sides of the

elytra; base broadly evenly and strongly arcuate throughout; disk sparsely

feebly, subasperately punctate. Elijtra slightly wider than the base of the

prothorax, one-half longer than the latter, two-thirds wider than long,

broadly, angularly emarginate at apex ; disk evenly convex. Abdomen short,

as broad at base as the elytra ; sides convergent and feebly arcuate ; fifth

segment longer than the iourth. Legs short. Length 0.9 mm. ; width 0.5 mm.

Pennsylvania.

The club of the antennae is stouter than m Jtavicorne, and the

eighth joint is much more transverse. The single type has the

abdomen contracted.

S. claTiger n. sp. — Stout, suboval, convex, strongly shining, black

throughout, the legs piceous ; antennje pale toward base, the large club

piceous-black ; head minutely, sparsely, the pronotum a little more strongly,

asperately and rather closely punctate ; elytra strongly and closely imbricate ;

abdomen more coarsely imbricate, the lines finer, the sculpture of the fifth

tergite extending very nearly to the apex ; pubescence rather coarse, moderate

in length and density. Head strongly deflexed, evenly convex, wider than

long and fully three-fifths as wide as tlie prothorax ; eyes large, attaining the

prothorax ; antennae one-half longer than the head, the second joint as wide

as the first and a little longer, as long as the third and fourth, third slightly

elongate, fourth scarcely longer than wide, fifth but little thicker, quadrate,

sixth decidedly thicker, one-third wider than long, seventh still much wider,

transverse, sixth to ninth rapidly and evenly increasing in width, the latter

more than twice as wide as long, tenth as wide as long, very obtuse, as long as

the two preceding, ninth joint more than twice as wide as the first. Prothorax

fully twice as wide as long, the sides arcuate and strongly convergent from

base to apex ; base very strongly, broadly arcuate, fully three-fourths wider

than the apex ; disk strongly, evenly convex. Elytra as wide as the base

of the prothorax, much longer than the latter ; sides feebly convergent and

arcuate toward base ; disk slightly longitudinally prominent along the sides

toward apex. Abdomen, when contracted, scarcely as long as wide, subquad-

rate, shorter than the anterior parts, slightly narrower than the elytra, the

sides feebly convergent toward apex ; border moderate ; fifth segment longer

than the fourth. Tarsi slender. Length 1.0 ram. ; width 0.65 mm.

Iowa (Keokuk).

This species is larger and still broader than nugator, and diifers

Coleopterological Notices, V. 381

in its more finely and closely imbricated elytra, and still larger and

longer but more gradually formed antennal club. Two specimens.

S. OTiforiue n. sp. — Broadly oval, convex, polislied, black, the legs

piceo-testaceous ; antennae flavate ; punctures of the head and pronotum fine,

moderately close, even ; elytra and abdomen with imbricate sculpture ; pubes-

cence moderate in length, fuscous, rather conspicuous. Head vertical, not

visible from above, the eyes large, attaining the base ; antennae short, one-

half longer than the head, the second joint longer than the iirst and longer

than the next two combined, third longer than the fourth and nearly twice

as long as wide, three to seven subequal in width, the latter somewhat trans-

verse, club abrupt, parallel, loose, the ninth joint one-half wider than long.

Prothorax small, about twice as wide as long ; base strongly arcuate ; apical

angles deflexed and right, narrowly rounded ; basal almost obliterated ; disk

evenly convex. Elytra together broadly emarginate at base and equally

broadly, triangularly emarginate at apex, at apical third much wider than the

prothorax, one-third longer ; sides strongly arcuate toward base, continuous

in curvature with the prothorax. Abdomen, when contracted, a little wider

than long, about as long as the elytra, subcontinuous in outline with the

latter, conical, the sides nearly straight ; fifth segment as long as the two

preceding together. Legs slender, the posterior tarsi much shorter than the

tibiae. Length 0.75 mm.; width 0.5 mm.

California (Los Angeles Co.).

Differs from the preceding two species in its more evenly elliptical

outline, more abruptly formed antennal club and longer fifth ventral

segment.

Note.

The species described by Say as Aleochara simplicicollis (Trans. Am. Phil.

8oc., VI, p. 155), is identical with Microglotta suturalis Sahib.

OXYTELINI.

OXYTELIJS Grav.

Considering the general homogeneity of facies in Oxytelus, there

is an unusual amount of variation in the structure of important

organs, such as the mentum, and especially a very great amount of

diversity in the male sexual modifications ; these may manifest

themselves at either end of the body, sometimes virtually at the

head only, in other species at the abdominal apex, but occasionally

also quite noticeably at both extremities. The females are often

very similar among themselves, and it is frequently almost impos-

382 Coleopterological Notices, V.

sible to accurately identify an isolated example of that sex. I have

consequently drawn all the characters of the following table and

subsequent descriptions from the male alone, when that sex could

be examined.

In the Oxytelini true ocelli, such as characterize the Omalini, do

not exist, but in Oxytelus their place is taken by two strongly

setigerous punctures, occupying very nearly the same position at

the base of the vertex. I have not noticed these punctures in

Trogophloeus, nor in Aploderus, and they may possibly be pecu-

liar to Oxytelus.

Most of the species are subai'ctic, but those in which the front is

spinose or spiculate in the male appear to be more partial to tropical

conditions, and are abundant in Central America. Those known

to me at present may be distinguished by the following char-

acters : —

Eyes large in both sexes, the tempora subobsolete ; seventh ventral plate of

the male with two deep remote and parallel-sided fissures, the median

lobe truncate, not projecting beyond the lateral parts and with its edge

slightly thickened in the middle SCUlptUS

Eyes moderate, the tempora always large and well developed 2

2 — Frontal margin armed in the male with a short stout acuminate or tri-

angular process 3

Frontal margin not armed in the male 4

3 — Frontal process simple and finely acute at apex ; head large, subquadrate ;

elytra longer than the prothorax.

Eyes at their own length from the basal angles ; elytra closely punctate ;

mandibles arcuate insi^uitlis

Eyes at much more than their own length from the basal angles ; elytra

more coarsely and sparsely punctate ; mandibles almost straight, arcuate

at apex luunitus

Frontal process notched at apex ; head smaller, strongly transverse.

torcTiceps

4 — Male with the seventh ventral plate abruptly produced in the middle in

the form of a flattened ligula. which is generally subtruncate at tip 5

Male with the seventh ventral bisinuate or biemarginate at tip, the median

lobe rounded or broadly angular, sometimes obsolete 10

5 — Pronotum with three longitudinal impressed grooves 6

Pronotum even, without longitudinal impressions 9

6 — Vertex with two grooves convergent from the base COllTergeilS

Vertex with the grooves parallel 7

Vertex without impressed grooves 8

7 — Sides of the prothorax sinuate near the basal angles, the latter more or

less prominent.

Coleopterological Notices, V. 383

Antennae moderately incrassate ; joints seven to ten equal, eleventh small,

not as long as the two preceding ; basal joint slender, strongly constricted

near the apex fliscipeilllis

Antennae more incrassate ; joints seven to ten increasing in width, the

eleventh large, as long as the two preceding; basal joint stouter, cylin-

drical, not constricted lliiuilis

Sides of the prothorax without trace of sinuation before the basal angles, the

latter obtuse but generally not rounded, not at all prominent.

Tempora more prominent than the eyes ; posterior tarsi long, fully two-

thirds as long as the tibiae inoiltailllS

Tempora not more prominent than the eyes ; posterior tarsi scarcely more

than one-half as long as the tibia; inveniistlis

S — Pronotal sulci very feeble peillisylvaniciis

9 — Vertex not at all impressed ; upper surface smooth and even.

iiicoluniis

lO — Sides of the prothorax more or less distinctly crenulate ; antennae rather

long and slender.

Front flattened and strongly, densely granulose and opaque between the

antennal prominences; eyes moderate in size nigosiis

Front finely, sparsely punctate and polished ; eyes very small ni^er

Sides of the prothorax not crenulate 11

11 — Sculpture coarse and moderately dense ; rather small species 12

Sculpture very finely, longitudinally strigose ; species still more minute ....15

12 — Prothorax moderately transverse, with the sides parallel ; abdomen very

strongly reticulate and dull toward base placusillllS

Prothorax strongly transverse, with the sides convergent behind 13

13 — Sides of the prothorax distinctly emarginate just before the basal angles ;

median sulcus of the pronotum alone distinct deilSllS

Sides of the prothorax not emarginate near the base ; pronotum with three

more or less distinct longitudinal impressions 14

14 — Sculpture very dense ; lustre dull, the abdomen reticulate and but

feebly shining ; antennae rather more slender and less incrassate.

alpicola

Sculpture not so dense, except on the elytra of some species, the lustre some-

what shining ; abdomen always polished ; antennae more incrassate.

Elytra distinctl}"^ impressed near the suture toward base ; elytral punctures

distinct, not forming long rugae at least toward base nitidlllllS

Elytra very narrowly impressed along the suture near the base, the punc-

tures indistinct, forming long coarse parallel rugae, the elytra shorter and

more transverse than in nitidulus SUSpectUS

Elytra not in the least impressed along the suture, perfectly flat, the punc-

tures indistinct, forming long fine anastomosing rugae solirinilS

15 — Antennae longer, slender, the outer joints but slightly wider than long ;

surface more shining and less densely strigilate Tegraildis

Antennae short, stouter, strongly incrassate, the outer joints strongly trans-

verse ; lustre very dull.

384 Coleopter^ological Notices, V.

Elytra but slightly longer than the prothorax ; abdomen polished, very

remotely and obsoletely punctulate nanus

exiguus

Elytra much longer than the prothorax ; form broader, the abdomen strongly

reticulate, tinely, more densely and subgranularly punctulate.

tetracarinatus

It will be observed that the species are not quite as abundant

as in the European fauna, but others will probably be discovered

as these obscure little insects are seldom collected. Four of the

twenty -three are common to the two continents.

O. SCUlptus Grav. — Mon., p. 191 ; mosrens Mels. : Proc. Ac. Phila., II,

p. 42 ; antennatiis Steph. ; lonyicornis Mann. ; testaceipennis Fairm.

The head in both sexes is small, narrower than the prothorax,

with a single median impressed channel toward base and large

eyes. The prothorax is moderately transverse, with three distinct

impressed channels, the elytra increasing in width from base to

apex, a little wider and much longer than the prothorax, rather

coarsely, subrugosely sculptured. The mentuni has a fine arcuate

discal groove extending from one basal angle to the other. Length

3.4-4 0 mm.; width 1.0-1.1 mm.

This species is represented in my cabinet from Iowa, Wisconsin,

California and Europe. The European and American forms do

not differ at all. The male appears to be much less abundant than

the female.

O. insignitus Grav. — Mon., p. 188; americanus Mann.: Brachel., p. 48.

In the male of this species the head is large, slightly wider than

long, with the eyes at their own length from the basal angles, the

antennae about one-third longer than the head, exclusive of the man-

dibles, the latter very long, decussate, almost evenl}^ arcuate and

acutely pointed, the frontal porrect process acute and simple. In

the female the head is very much smaller, transverse, with the

frontal margin not armed, the eyes about equally large but almost

attaining the base, the antennae fully one-half longer than the head

and the mandibles much smaller, thicker and more strongly arcuate.

The mandibular tooth is situated at nearly the same distance from

the base in both sexes, but is very much nearer the apex in the

female. In the male the head, prothorax and elytra are nearly

equal in width and the elytra are distinctly longer than the pro-

thorax, strongly and rather closely punctured. It occurs through-

Goleopterological Notices, V. 385

out the Atlantic States from New York to Texas and far into

Mexico. Leugth 2.4-3.0 mm.; width 0.75-0.9 mm.

O. munitllS n. sp. — Parallel, stout, flavate, the pronotum darker, rufes-

cent ; head and abdomen still darker, piceous ; antennse black, pale toward

base ; mandibles and legs pale ; integuments polished throughout ; pubescence

very sparse, the abdominal setae rather long ; head impunctate and polished,

except near and at the sides, where there are some coarse elongated snbrugi-

form punctures, the under surface impunctate ; pronotum coarsely, very

sparsely, rugosely, the elytra also coarsely sparsely and unevenly punctate ;

abdomen minutely, sparsely punctulate. Head v^irj large, as wide as the pro-

thorax, slightly wider than long, with a very large uneven smooth impression

at each side at about lateral third, the frontal margin abruptly prolonged in

a short acute porrect spine ; eyes moderately convex, at very much more

than their own length from the basal angles ; tempera behind the eyes nearly

straight and feebly divergent, then broadly ronnded to the neck which is

three-fifths as wide as the head ; mandibles very long, nearly straight, arcuate

at apex, toothed near the base ; antennje only slightly longer than the head

exclusive of the mandibles, the basal joint large, stout, constricted at base,

nearly as long as the next four, second a little shorter and stouter than the

third, which is longer than the fourth, the latter slighrtly elongate-oval, five to

eight increasing rapidly in width, eight to ten equal, moderately transverse,

eleventh small, conoidal, not as long or wide as the preceding two. Pidhwax

short and transverse, nearly twice as wide as long, the sides strongly conver-

gent from apical fifth to the basal angles, which are very obtuse and nearly

obsolete, the edges feebly crenulate and with a slight sinuation just before

the basal angles ; apex broadly bisinuate ; apical angles well marked ; disk

strongly trisulcate, broadly impressed toward the sides. Ehjtra two-fifths

wider than long, equal in width to the prothorax and fully two-fifths longer ;

sides snbparallel, feebly arcuate ; humeri broadly, transversely exposed at

base ; suture broadly, strongly margined ; disk of each broadly impressed

along the middle. Abdomen short, nearly as wide as the elytra, parallel, the

border thin and deep. Length 3.0 mm. ; width 0.8 mm.

Pennsylvania.

This species is allied to insignitus, and resembles it strongly in

the general form of the head and simple acute apex of the frontal

process, but differs in the straight mandibles, eyes more distant

from the basal angles and in the much coarser and sparser sculp-

ture of the pronotum and elytra; the oblique rugae near the base of

the head toward the sides in insignitus are wanting in munitus.

The description is taken from the male, which is the only sex that

I have seen.

O. l>reviccps n. sp. — Moderately broad, parallel, dark brownish-testa-

ceous ; mandibles and palpi concolorous ; elytra and legs flavate ; antenuje

386 Coleopferological Notices, V.

black, flavate at base; head blackish; abdomen dark piceous-brown, the

apices of the segments paler. Head, exclusive of the mandibles, one-half

wider than long, a little narrower than the prothorax, finely reticulate and alu-

taceous, minutely, sparsely punctate, strongly, longitudinally rugose toward

the sides, broadly biimpressed, the impression as usual very deep within the

antennal tubercles ; eyes moderate, at lesfe than their own length from the

basal angles, the tempora feebly divergent behind them ; basal angles broadly

rounded ; mandibles moderate, strongly, evenly arcuate, decussate ; frontal

porrect process notched at tip ; antennae fully one-half longer tlian the head,

nearly as in insignitus and munitus. Prothorax fully three-fourths wider than

long, the apical angles nearlj' right, distinct ; sides thence nearly straight,

feebly divergent for a short distance, then rather strongly convergent to the

broadly rounded basal angles ; edges finely crenulate ; disk strongly trisul-

cate, broadly impressed laterally, rather closely, strongly punctate. Elytra

very short, strongly transverse, at base as wide as the prothorax, at apex a

little wider, the suture not longer than the prothorax ; humeri transverse

at base; disk scarcely impressed, strongly distinctly and closely punctate.

Abdomen parallel, very slightly narrower than the elytra, minutely feebly and

sparsely puuctulate. Length (extended) 3.0-3.5 mm. ; width 0.7-0.9 mm.

New York (Catskill Mts.).

The description is taken from three males, which are perfectly

similar among themselves, except that the notch in the tip of the

frontal process varies in size, in some specimens being- very narrow.

The female greatly resembles the female of insignitus, except that

the eyes are somewhat less basal, the elytra shorter and the neck a

little wider.

O. COliTergens Lee. — Trans. Am. Ent. Soc , VI, 1877, p. 236.

Head in the male large, at base rather wider than the prothorax,

coarsely, rngosely pnnctate, with a large apical concavity, the eyes

convex, at their own length from the basal angles, the tempora

strongly divergent behind the eyes, the frontal margin slightly pro-

duced in a short broad truncate process; antennfe a little longer

than the head, the tenth joint slightly wider than long. Prothorax

nearly twice as wide as long, deeply trisulcate, broadly impressed

laterally, strongly, rather closely punctate. Elytra a little longer

and wider than the prothorax, strongly, moderately closely punctate.

Length 3.8 mm.; width 1.1 mm. Georgia and Florida.

The mentum is as usual composed of three parts, the basal lim-

ited by a deep groove, trapezoidal in form, extending from one

basal angle to the other and advancing anteriorly more than one-

half the entire length, the apical consisting of a narrow transverse

Coleopterological Notices, V. 387

senn-membranous margin. In the male the sixth ventral plate has

two small feeble teeth on the apical edge, separated by one-third of

the total width ; the seventh is prolonged in the middle in a ligiili-

form process which is as long as wide, gradually narrowed toward

the truncate apex, the surface of the segment perfectly flat and even

throughout, except a very feeble swelling at the tip of the ligula.

O. fuscipeiinis Mann. — Bull. Mosc, 1843, II, p. 233.

Black, the elytra rufescent ; legs pale brown ; surface highly pol-

ished, the punctures strong but rather sparse, closer and feebly sub-

confluent on the elytra. The head in the male is large, about as

wide as the prothorax, with a large deep apical concavity, the

middle of the frontal edge broadly sinuate, the sinuation limited

by rather prominent angular projections ; eyes rather small, at

nearly twice their length from the neck, the tempora evenly,

strongly arcuate from the eyes to the neck ; antennae a little longer

than the head, the outer joints strongly transverse. Prothorax not

twice as wide as long, deeply trisulcate, also longitudinally, ob-

liquely impressed toward the sides. Elytra a little wider and dis-

tinctly longer than the prothorax. Length 4.0 mm. ; widih 1.2 mm.

Alaska to California.

The sixth ventral is not modified, the seventh abruptly produced

in the middle in a gradually narrowed ligula, a little longer than

wide, subtruncate at apex, the surface of the segment thrown up

in the middle at the base of the ligula in a short transverse ridge

which is steep behind, gradually declivous anteriorly, the summit

of the ridge scarcely one-half wider than the apex of the ligula,

with its lateral limits very acute, each bearing a stiff seta ; surface

of the ligula perfectly flat throughout. The transverse groove of

the mentum attains the middle of the length, is parabolic in form

and interrupted in the middle.

In connection with this species, I do not understand the reference

by Mr. Fauvel to laqueatus Marsh., as the sexual characters in my

representative of that species are altogether different, nor to lutei-

pennis Erichs., by Dr. Sharp in the "Biologia," as that species is

stated by Erichson to have the sixth ventral plate bituberculate at

apex. I think there can be no doubt that I have correctly identi-

fied Mannerheim's species, as there seems to be none other at all

like it found in Alaska. There is a large series in my cabinet.

Dr. LeConte confounded with this species one or more eastern

388 Coleopterological Notices, V.

forms, and the indicated sexual characters of the male (1. c, p. 285)

must surely have been inadvertently taken from a specimen of 0.

sculjytus.

O. liiniilis n. sp. — Stout, black, polished, the elytra dark rufous; legs

and basal parts of the aiiteiiiise pale ; integuments glabrous, with a few erect

stiff setae, the two occipital distinct. Head just visibly narrower than the

prothorax, nearly as long as wide, strongly but rather sparsely punctate,

broadly concave anteriorly, the frontal margin very broadly, feebly produced

and slightly sinuate, with the lateral angles obtuse; eyes convex; tempora

strongly arcuate from the eye to the neck, one-half longer than the former

and equally prominent ; neck two-thirds as wide as the head ; antennae one-

third longer than the head, the outer joints rapidly incrassate, basal joint

long, stout and cylindrical. Prothorax not quite twice as wide as long, widest

scarcely before the middle ; sides broadly rounded, convergent and sinuate

posteriorly, the basal angles prominent ; base arcuate ; apex truncate, feebly

sinuate laterally ; disk strongly trisulcate, strongly, longitudinally impressed

sublaterally ; strongly but sparsely punctate. Elytra s little wider and dis-

tinctly longer than the prothorax; sides feebly divergent ; humeri exposed;

base broadly eraarginate in circular arc ; disk flat, coarsely, closely punctate,

the punctures becoming slightly confluent along the middle of each. Abdomen

slightly narrower tlian tiie elytra, almost impunctate, minutely, sparsely

punctulate toward base. Length 5.0 mm. ; width 1.25 mm.

Pennsylvania.

The male from which the description is drawn, has two extremely

obsolete dentiform subapical elevations on the sixth ventral plate,

separated by one-fifth of the entire width, the seventh abruptly pro-

duced in the middle in a short gradually narrowed ligula, much

shorter than wide, with its apex slightly thickened, beveled and

transversely truncate, the surface of the segment and ligula per-

fectly even and flat throughout, the eighth narrowly, deeply im-

pressed throughout the length along the median line.

This species is allied to fuscipennis, but differs in the male sexual

characters and antennal structure.

O. niontanilS n. sp. — Stout, black, glabrous, highly polished through-

out, the elytra scarcely visibly rufo-piceous ; legs piceous-black, the tarsi

paler ; antennae scarcely paler at base. Head slightly narrower than the

prothorax, distinctly shorter than wide, strongly, not densely punctate, the

mandibles stout, arcuate, the apical concavity large, transverse ; frontal

margin very broadly, feebly produced, distinctly sinuate, with rather promi-

nent angles ; eyes moderate, prominent ; tempora strongly arcuate from the

eyes to the neck, not twice as long as the eye and rather more prominent ;

antennae one-half longer than the head, strongly incrassate, the eleventh

Coleopterological Notices, V. 389

joint barely as long or wide as the preceding two, basal joint slender, feebly-

constricted toward apex. Prothorax twice as wide as long, the sides broadly,

evenly arcuate from apex to base, parallel nearly to the middle, then conver-

gent to the basal angles which are obtuse and scarcely evident ; base broadly

arcuate ; apex truncate, the sinuations distant and very feeble ; disk strongly

trisnlcate, broadly impressed toward the sides, strongly but not densely

punctate throughout. Elytra as wide as the prothorax and distinctly longer ;

sides almost parallel ; humeri feebly exposed ; disk strongly, evenly, not

densely punctate throughout, the punctures tending to unite longitudinally.

Abdomen a little narrower than the elytra ; sides parallel and slightly arcuate ;

punctures minute, rather numerous toward base, very remote and obsolete

toward apex. Length 3.6-4.0 mm. ; width 1.1-1.2 mm.

California (Lake Taiioe).

This species is allied Xo fui^cipennis, differing in the more strongly

and less sparsely punctured integuments, dark elytra and legs,

rounded sides of the prothorax with nearly obsolete basal angles,

and in the male sexual characters. The sixth ventral plate is not

modified, the seventh abruptly produced in the middle in a very

short gradually narrowed ligula, much wider than long, with the

apex feebly sinuato-truncate, the angles rounded, its surface tumid

and widely beveled toward apex, the surface of the segment with

two approximate subconfluent setigerous tubercles at some distance

anterior to the base of the ligula, and distant by less than the apical

width of the latter.

O. illTeilllstus n. sp. — Stout, black, highly polished and glabrous, the

elytra dark piceous ; legs and basal joint of the antennae pale ; sparse erect

set^e long and distinct. Head small, wider than long, distinctly narrower

than the prothorax, deeply concave at apex, the median parts of the clypeus

flat, with the apical margin broadly sinuate and biangulate ; punctures strong

but sparse ; ej'es moderate, convex ; tempora strongly, evenly arcuate to the

neck, but slightly longer than the eye and not more prominent ; antennae one-

half longer than the head, strongly incrassate, the first joint long, slightly

contorted and broadly constricted near the apex ; tenth scarcely one-third

wider than long, eleventh small, not as long as the two preceding. Pt-othorax

not twice as wide as long, widest at the middle, the sides parallel, evenly,

broadly arcuate throughout ; base and apex very nearly equal ; basal angles

broadly obtuse but not blunt; disk strongly trisulcate, broadly and strongly

impressed sublaterally, strongly but rather sparsely punctate, the punctures

line on the median ridges. Elytra distinctly longer tlian the prothorax, at

base equal in width, at apex a little wider ; disk strongly but rather sparsely,

nearly evenly punctate. Abdomen distinctly narrower than the elytra ; sides

parallel, feebly arcuate toward apex ; surface subimpunctate ; border rather

deep, moderately thin. Length 3.7 mm. ; width 1.1 mm.

390 Coleopterological Notices, V.

Marj^land.

The small head may be exceptional and an individual feature in

the unique type, for it varies a good deal m fiiscipennis ; I find,

however, that the sexual characters at the ventral apex are very

nearly constant, whatever may be the size of the head. The present

species is allied closely to fascipennis, but differs in having two

small feeble tubercles at the apex of the sixth ventral plate, sepa-

rated mutually by only one-eighth or one-tenth of the entire width,

also in the parallel sides of the prothorax. The seventh ventral is

abruptly produced in a narrow, gradually almost parallel, narrowly

truncate ligula, longer than wide, with the surface at apex broadly

and feebly beveled, the surface of the segment at the base of the

ligula acutely and confluently bituberculate and bisetigerous. The

transverse grove of the mentum is entire and in the form of a cir-

cular arc,

O. pennsylTanicus Erichs. — Gen. Staph., p. 792; Lee: Trans. Am.

Ent. Soc, VI, p. 235.

Dark rufo-piceous, the elytra, legs and basal parts of the antennae

pale, brownish-flavate ; surface polished, glabrous. Head scarcely

visibly narrower than the prothorax, transverse, the frontal margin

not produced, broadly arcuate in the middle ; antennae not quite as

long as the head and prothorax, moderately incrassate. Prothorax

three-fourths wider than long, widest at the middle, the sides almost

evenly arcuate ; base and apex subequal ; disk finely, sparsely punc-

tate like the head. Elytra slightly wider and distinctly longer than

the prothorax, rather sparsely, not coarsely punctate, a broad me-

dian area of each feebly impressed and more closely punctured.

Abdomen parallel, distinctly narrower than the elytra, subimpunc-

tate. Length 3.4-4.4 mai. ; width 0.15-0.95 mm. New York to

the Gulf States.

The sixth ventral plate of the male has at apex two small

tubercles, distant by one-sixth of the entire width ; the seventh

is feebly produced in a gradually narrowed, short flat ligula, much

wider than long, with its apex emarginate, and the surface of the

segment at the base of the ligula is obtusely elevated in the form of

a short, transverse, anteriorly arcuate ridge, the highest point of

which is the middle and not the setigerous lateral extremities as in

fuscipennis and its allies. The arcuate line of the mentum is very

fine and is subinterrupted in the middle. The head in the female is

much smaller than in the male, with the eyes relatively larger.

Coleopter'ological Notices, V. 391

O. incollimis Ericbs. — Gen. Staph., p. 791 ; Lee: 1. c, p. 235.

Head black; prothorax and abdoraen dark brownish-rufous;

elytra and legs pale flavate ; antennae rufo-fuscous, slightly paler

toward base ; integuments polished, glabrous, very finely, sparsely

punctate, the elytra a little more coarsely and deeply, the abdomen

finely punctate and sparsely clothed with short, stiff pubescence.

Head and prothorax without longitudinal grooves, the antennae

moderately incrassate, the tenth joint in the male strongly trans-

verse, the eleventh unusually long, equalling the preceding three.

Elytra equal in length and width to the prothorax. Abdomen

parallel, a little narrower than the elytra, the border rather thin

and deep. Length 3.5 mm.; width 1.0 mm. Southern States.

One of the most distinct and isolated of our species, easily known

by the characters given above and by the parallel and feebly arcuate

sides of the prothorax. The sixth ventral of the male has at apex

two feeble, broadly cuspiform tubercles, separated by between one-

sixth and one-eighth of the width, the seventh produced in a flat

ligula, a little wider than long, with the sides rapidly convergent

to the feebly sinuato-truncate apex, the surface not beveled at its

apex, and the surface of the segment perfectly flat and even

throughout.

O. rugOSUS Fabr. — Syst. Ent., p. 267 ; hasalis Mels.: Proc. Ac. Nat. Sci.,

Phila., II, p. 41 ; rugulosus Harris nee Say.

This fine species is too well known to need extended notice ; the

American specimens do not differ at all from the European, except

perhaps in the less finely substrigose sculpture of the head. The

head is large in the male, with the antennae as long as the head

and prothorax, the outer joints not at all transverse and the eleventh

much shorter than the two preceding. Prothorax arcuately nar-

rowed from near the apex, as wide as the elytra and fully three-

fourths as long. Abdomen minutely granulato-reticulatef and dull.

Length 4.2-5.0 mm.; width 1.0-1.1 mm. United States and

Europe. I have not seen it, however, from the Pacific Coast.

The mentum differs greatly from that of fuscipennis and the

other allied species preceding, having no trace of the transverse

groove ; it is rectangular, twice as wide as long, finely, densely

granulato-reticulate and dull, with a wide membranous apical

margin. The male sexual characters are also of a different type,

the fifth ventral having a strong porrect median tooth, the sixth a

392 Coleopferological Notices, V.

feebly elevated bisinuate subapical elevation, and the seventh is

deeply, almost equally and angularly biemai'giuate.

O. niger Lee— Trans. Am. Ent. Soc, VI, 1877, p. 235.

Parallel, rather narrow, somewhat convex, polished, black

throughout, the antennae not at all paler at base; legs dark red-

dish-brown. Head slightly transverse, convex, a little narrower

than the prothorax, impressed only at the inner side of the anten-

nal prominences, the frontal margin finely beaded, transversely

truncate; punctures fine but strong, not dense; eyes very small;

tempora large, rounded, more prominent than the eye ; antennae as

long as the head and prothorax, feebly incrassate, the basal joint

long, cylindrical, narrowed gradually toward base, tenth very

slightly transverse, eleventh nearly as long as the preceding two.

Prothorax two-thirds wider than long, narrowed behind from near

the apex, trisulcate, the median sulcus deeper, scarcely impressed

toward the sides, not very coarsely but strongly, sparsely punctate.

Elytra equal in width to the prothorax but not quite as long, rather

coarsely but sparsely punctate, somewhat uneven. Abdomen very

remotely and obsoletely punctulate, rather coarsely so and distinctly

pubescent beneath. Length 3.3 mm.; width 0.75 mm. California

(San Francisco and Lake Tahoe) ; British Columbia — LeConte.

The sixth ventral plate of the male is obtusely tuberculate at its

centre, and also has, on the disk near the posterior edge, two small

erect very approximate tubercles arranged transversely, the seventh

broadly biemarginate, the median lobe broadly rounded, the eighth

not longitudinally impressed. The mentum is transverse, shining

though transversely rugulose, impressed along the basal margin,

and with the usual pale semi-membranous apical piece.

O. placiisimis Lee. — Trans. Am. Ent. Soc, VI, 1877, p. 237.

Pale reddish-brown throughout, the head and abdomen more

piceous but only slightly darker ; punctures rather coarse, very

dense, forming long anastomosing rugae, the depressed flat front of

the head between the antennal prominences shining, almost im-

punctate; tergum subimpunctate but strongly reticulate and dull

toward base; integuments glabrous, the tempora, and especially

the venter, distinctly pubescent. Head narrower than the protho-

rax, as long as wide, subquadrate ; eyes small, convex, at the

middle ; antennae feebly incrassate, one-half longer than the head.

Coleopterological Notices, V. 393

Prothorax rectangular, one-half wider than long, the sides parallel,

very feebly arcuate ; median groove feeble, the others almost com-

pletely obsolete. Elytra distinctly wider and longer than the pro-

thorax, flat. Length 2.5 ram. ; width 0.75 mm. District of

Columbia.

Of this distinct and myrmecophilous species I have only seen

the female. The mentum is smooth and polished, with a trans-

verse, feebly arcuate broad and irregularly eroded subbasal groove,

and the usual membranous apical margin.

O. densus n. sp. — Parallel, rather narrow, strongly shining, glabrous,

tlie tergum with very minute sparse hairs, the venter minutely and extremely

remotely pubescent ; pronotum rufous ; elytra darker, piceous ; head and

abdomen black ; legs pale flavate ; antennae blackish, pale toward base ;

punctures throughout the head, pronotum and elytra rather coarse, very

dense, subcoalescent ; separated longitudinally by anastomosing rugae, the

front between the antennal prominences shining and subimpunctate ; abdo-

men polished throughout, very minutely remotely and obsoletely punctulate.

Head very slightly narrower than the prothorax, a little wider than long, the

occiput feebly, remotely biimpressed at base only; eyes small, convex, at

one-half more than their own length from the basal angles ; tempora nearly

straight and parallel behind them to the rounded basal angles, thence sub-

transverse to the neck ; antennae nearly as long as the head and prothorax,

the basal joint cylindrical, as long as the next three, second much stouter

than the third, outer joints moderately incrassate, tenth one-half wider than

long, eleventh as wide and long as the two preceding, ogival. Prothorax nearly

twice as wide as long, widest near apical third, the sides parallel, broadly,

evenly arcuate from the apex to the antebasal notch, the latter distinct; base

narrower than the apex, arcuate, the latter truncate ; disk tmusually convex

toward the middle, the median groove deep, the others obsolete, not impressed

toward the sides. Ehjtra slightly wider and much longer than the prothorax ;

sides divergent, broadly arcuate behind ; humeri exposed ; disk flat. Abdomen

a little narrower than the elytra ; sides parallel ; border moderately deep,

rather thin toward base, gradually very thin behind the middle. Length

1.9-2.1 mm. ; width 0.5 mm.

Maryland ; Texas.

Possibly also myrmecophilous, somewhat resembling placusinns

but much smaller, with the abdomen polished, much less pubescent

beneath, and the prothorax short, narrowed and laterally emargi-

nate near the base. The female has the head smaller and shorter

and the eyes relatively larger, situated at not more than their own

length from the base. In the male the seventh ventral plate is

broadly bisinuate at apex, the median lobe feeble but obtusely an-

Annals N. Y. Acad. Sci., VII, Nov. 1893.— 26

394 Coleopterological Notices, V.

gulate, the eighth not distinctly impressed. The mentuni is nearly

as in placiisinus, but with a deeper, more even, feebly arcuate and

unusualy coarse subbasal groove. Numerous specimens.

O. alpicola n. sp. (Fauvel MS.) — Broad, flat above, dull, very densely

sculptured, black througliout, the autenuse slightly paler toward base ; legs

dark rnfo-testaceous ; integuments deeply, densely but not very coarsely

punctate, the punctures separated by longitudinally anastomosing rug?e

throughout, the small depressed clypeus between the antennal prominences

more feebly sculptured and somewhat shining ; abdomen coarsely, strongly

reticulate and dull, feebly, sparsely punctate and sparsely clothed with short

hairs, which are more distinct but not at all closer on the polished under sur-

face. Head subquadrate, nearly as long as wide, quite distinctly narrower

than the prothorax, longitudinally trisulcate, the median impression narrow

and distinct, the lateral broad and feebler ; eyes small, at fully one-half more

than their own length from the basal angles ; tempera divergent and nearly

straight behind them, broadly rounded behind, becoming transverse near the

neck, which is narrow, only three-fifths as wide as the head ; antennje gradu-

ally, moderately incrassate, scarcely one-half longer than the head, the basal

joint as long as the next three, second longer and thicker than the third,

tenth one-half wider than long, eleventh fully as wide but not quite as long

as the preceding two, obtusely ogival. Prothorax about twice as wide as long,

the sides parallel and feebly arcuate, becoming strongly convergent in basal

half, the basal angles very obtuse, almost obliterated ; disk trisulcate, the

median sulcus distinct and entire, the lateral partial and broadly impressed,

scarcely at all impressed toward the sides. Elytra equal in width to the

prothorax and nearly one-half longer, one-third wider than long ; sides

subparallel, feebly arcuate ; humeri slightly exposed ; disk flat, not at all

impressed at the suture near the base. Abdomen subequal in width to the

elytra. Length 2.1 mm. ; width 0.7 mm.

Colorado.

The male is the only sex examined ; it has very feeble abdominal

characters, the seventh ventral plate being transversely truncate

throughout its width, shorter than the dorsal plate, the infolded

sides of which are visible laterall}^ beyond its apex. The mentum

has no groove, but a depressed basal area, extending beyond the

middle and bounded anteriorly by an arcuate line from angle to

angle, which is.evenly, transversely rugose; anterior part polished,

devoid of sculpture; apical membranous margin fine.

O. nitidlllllS Grav. — Micr., p. 107; punctatns Lee: Tr. Am. Ent. Soc,

VI, p. 236 ; rugulosus Gemm. et Har. nee Say.

Elongate, slender, parallel and rather depressed, shining, strongly

but not densely punctate, black, the legs pale; elytra rufo-testaceous,

Coleopterological Notices, V. 395

generally more or less infumate toward base. Head in the male

nearly as wide as the prothorax, obsoletely trisulcate, the eyes at

their own length from the basal angles, the tempora slightly

divergent behind them and a little more prominent. Prothorax

trisulcate, the median sulcus deep and narrow, the lateral broad

and very feeble, also broadly impressed toward the sides. Elytra

a little wider and distinctly longer than the prothorax. Leng'th

2.1-2.9 mm.; width 06 mm. Pacific Coast and Siberia to Western

Europe.

The male seems to be much less abundant than the female and

has rather feeble sexual modifications, the sixth ventral plate being

broadly and just visibly sinuate toward the middle, and the seventh

moderately bisinuate. The groove of the mentum is feebly arcuate,

very deep and somewhat uneven. A male which I took in the Sta,

Clara Valley, California, has longer elytra, at least one-half longer

than the prothorax, but does not differ much otherwise.

According to Mr. Fauvel the Mexican 7'ugidosus of Say and car-

bonellus Solksy, are identical.

O. Slispectiis 11. sp. — 0. tiitidnlus Lee. nee Grav. : Trans. Am. Ent. Soc.,

VI, p. 237. — Parallel, polished, bla<k, the elytra and legs pale brownish-

testaceous ; antennae piceous toward base ; integuments glabrous ; the venter

remotely, coarsely pubescent. Head very nearly as wide as the prothorax,

slightly wider than long, coarsely, closely punctate laterally, finely, feebly

so toward the m'iddle, the subquadrate clypeus convex and scarcely at all

punctured, finely impressed along the middle posteriorly to the base and with

two distant impressions at the base of the occiput ; eyes moderate, at their

own length from the basal angles, the latter broadly rounded to the neck, a

little more prominent than the eyes ; neck two-thirds as wide as the head ;

antennae as long as the head and prothorax, rather strongly incrassate and

perfoliate, the tenth joint not quite twice as wide as long, eleventh small,

conoidal, not as wide as the tenth and shorter than the two preceding. Pro-

thorax strongly, closely, somewhat longitudinally punctate, three-fourths wider

than long, widest at apical third ; sides evenly rounded anteriorly, becoming

gradually distinctly convergent and straight behind, the basal angles obtuse

but distinct ; base feebly arcuate, narrower than the subtruncate apex ; disk

trisulcate, the median sulcus deep and distinct, the lateral broad and feeble,

also impressed toward the sides. Elytra a little wider and longer than the

prothorax, transverse, flat, the sides feebly divergent ; humeri exposed ; disk

of each very broadly, feebly impressed along the middle ; punctures strong

but rather fine, longitudinally confluent, separated by fine close anastomosing

rugae. Abdomen slightly narrower than the elytra, parallel, polished. Length

1.6-2.0 mm. ; width 0.5-0.55 mm.

396 Coleopterological Notices, V.

J^ew York ; !N'orth Carolina ; Nebraska.

The female does not differ greatl}^ but has the head distinctlr

smaller. The sixth ventral plate of the male is not sinuate at apex,

the seventh narrowly and feebly bisinuate in the middle at apex,

the median lobe more advanced, small and broadly subanf^ulate.

The mental groove is coarse and deep. This species is readily dis-

tinguishable from vitidulvs Grav., by its smaller size and much

finer closer and aciculate sculpture of the elytra. It unquestion-

ably does occur with ants, but I believe only occasionally, as I

have found it in localities which were apparently not connected in

any way with their nests.

O. soliriniis Lec.-i-Trans. Am. Ent. Soc, VI, 1877, p. 237.

Rather broad, depressed, moderately shining, black, the elytra

with a slight piceous tinge ; legs paler, piceo-testaceous ; antennas

scarcely at all paler at base. Head feebly trisulcate, strongly punc-

tate, distinctly narrower than the prothorax, the eyes well devel-

oped, at their own length from the basal angles, the tempora par-

allel, not at all more prominent than the eyes ; antennae strongly

incrassate, the last joint not quite as long as the two preceding.

Prothorax nearly as in vitidulus, but more densely sculptured.

Elytra distinctly wider and nearly one-half longer than the pro-

thorax; sides rather strongly divergent; disk between the slightly

swollen upper limits of the flanks perfectly flat, finely, confluently

punctate and closely, longitudinally rugose. Abdomen distinctly

narrower than the elytra, parallel, finely reticulate, feebly aluta-

ceous, finely, sparsely, subgranularly punctulate and minutely,

sparsely pubescent, much more distinctly so beneath. Length

1.9-2.6 mm.; width 0.6-0.15 mm. California (Humboldt to Los

Angeles) ; Southwestern Utah.

The head in the female is distinctly smaller. In the male the

sixth ventral plate is unmodified, the seventh feebly bisinuate in

the middle, the small median lobe slightly produced, rounded and

extremely minutely fimbriate along its apex. The groove of the

mentum is coarse, deep and entire. This species is allied to nitidu-

h(s and suspectus, but differs in its broader form and in the much

finer, denser, substrigose sculpture of the elytra.

O. Tegrandis n. sp. — Slender, parallel, depressed, feebly shining,

minutely strigilate, black, the elytra piceous ; legs pale, the femora blackish ;

Coleopterological Notices, V. 397

antennae piceoiis at base. Head large, slightly transverse, as wide as the

prothorax, feebly impressed aloug the middle ; depressed clypeus strigilate

and dull ; eyes convex, at a little more than their own length from the basal

angles, rather more prominent than the tempora, the latter straight and

parallel behind them, abruptly rounded at base ; antennae rather slender,

feebly incrassate, fully as long as the head and prothorax, tenth joint sliglitly

transverse, the eleventh pointed, fully as long as the two preceding. Prothorax

two-thirds wider than long, the sides feebly convergent, evenly and distinctly

■ arcuate from apex to base, the basal angles obtuse and almost obliterated ;

disk with four polished feeble carinae, separated by concavities of the surface,

the two median very approximate, but becoming more distant from base to

apex, rather strongly impressed also toward tlie sides. Elytra distinctly wider

and longer than the prothoi-ax, the sides nearly parallel and straight; humeri

exposed at base ; disk flat, finely, densely strigilate, also obscurely punctate,

the strigilatious slightly confluent and shining toward base. Abdomen a little

narrower than the elytra, parallel, shining, very coarsely but feebly reticu-

late, minutely remotely and obsoletely punctulate, each tergite with two

distant erect and stiff setas at apex ; under surface polished, very remotely

pubescent. Legs slender, the posterior tarsi very short ; anterior tibiae not

angulate externally near the apex. Length 1.4 mm. ; width 0.35 mm.

California (near San Francisco).

Wiiile allied to nanus, this minute species differs in its coarser

strigilation, longer, much more slender antennae, and in the male

sexual characters. The sixth ventral is fimbriate at apex and sinu-

ate in median fifth, the seventh cylindrically impressed and finely

pubescent along the middle, the apex produced in the middle in a

small broadly rounded simple lobe, the eighth broadly impressed.

The mentum is coarsely, transversely grooved in the middle.

O. nanus Erichs. — Gen. Staph., p. 797.

O. exiglllis Erichs. — Gren. Staph., p. 798 ; pygmieus Melsh. : Proc. Ac.

Phila., II, p. 41 ; parvulus Melsh. : 1. c , p. 41.

I cannot resolve the ample material in my cabinet into distinctly

characterized species. It is easy to select two or three specimens

which apparently represent species, but in all cases others are found

which seem to be intermediate; so it is impossible to give any dis-

tinguishing characters at present. The species may be readily

known by its opaque, minutely strigilate sculpture, less dense in

the female, especially on the head, and its polished subimpunctate

abdomen. Length 1.2-1.8 mm.; width 0.3-0.45 mm. New York

to Florida; Lake Superior and Texas — probably extending through

Mexico.

398 Coleopterological Notices, V.

O. tetracarinatllS Block. — Verz. Ins. Plaueu., p. 116 ; de/yressus Grav. ,

Mior., p. 103.

This species is added on the authority of LeConte and Fauvel,

as I have seen no American specimens. It is very readily distin-

guishable from nanus by its larger, longer elytra, stouter form and

less polished, somewhat reticulate abdomen, which is finely, sub-

granularly punctulate. Length 1.7 mm.; width 0.55 mm. Europe;

Indiana— LeConte.

Omalint.

The genera allied to Lesteva form a much more important ele-

ment in the omaline fauna of North America than of Europe, and

may be distinguished among themselves as follows: —

Third joint of the maxillary palpi very small, not longer than wide, the

fourth extremely long as in Lesteva ; pronotum not impressed at the

sides ; labrum as in Lesteva, composed of two nearly equal parts, the

basal corneous, transverse and broadly truncate, the apical abruptly

thin, translucent and rounded.

Elytra short, quadrate ; first four joints of the hind tnrsi subeqnal in length,

the first not quite as long as the second ; antennae not clavate.

Pseudolesteva

Elytra long, extending to the apex of the third ventral ; first four joints of

the hind tarsi subequal, the first not appreciably longer than the second ;

antennae with the last three joints longer and thicker than the eighth,

forming an elongate and v^ry slendt-r clnb Tevales

Third joint of the maxillary palpi longer than wide ; pronotum always im-

pressed near the middle of the sides.

Maxillary palpi filiform, nearly as in Lesteva, the second joint but slightly

thicker than the third or fourth ; third very slightly longer tlian wide

and scarcely more than one-fourth as long as the fourth ; labrum semi-

circular, the central parts tumid, uneven and dense, the edges through-

out thinned and translucent ; antennae filiform, the joints elongate.

Uiiaiiiis

Maxillary palpi smaller, the second joint thick, nearly three times as wide

as the very slender fourth, third one-half longer than wide, a little thicker

than the fourth and less than one-half as long ; labrum as long as wide,

acutely parabolic, the edges throughout abruptly but very nairowly

thinned and translucent ; antennae short, gradually incrassate, the outer

joints not longer than wide Al'todiia

Maxillary palpi filiform, the second joint not much thicker than the third

or fourth, the second two to nearly three times as long as wide and

one-half as long as the fourth or somewhat less ; labrum short, broad,

Goleopterological Notices, V. 399

entirely corneous, broadly rounded at apex, the disk abruptly, strongly,

transversely impressed and thinned in apical third ; antennae filiform.

Head completely devoid of any trace of ocelli ; body small ¥ellica.

Head with two distinct and widely distant ocelli ; body large Tilea.

It is not possible to state at present whether the rather numerous

European species of Lesteva display notable variation in tarsal

structure, but certainly our pa Uipes and cribratidus are not at all

conformable with pubescens and longelytrata which I have under

observation, since both differ radically in tarsal structure, and crihra-

fulus also in its much longer elytra, subclavate antennae and nar-

rower, more convex form of the body.

PSEUDOLESTEVA n. gen.

The three forms described by LeCoiite have been combined to

form the single species pallipes. My material is not sufficiently

extensive to enable me to pronounce any opinion of value, but,

although extremely similar in form, it is possible ih^t pallipies and

higuitula {=picescens) may really be distinct, at least the two

oblique spots of the latter seem to be very constant and character-

istic; the trne paliipes is entirely black with the legs pale flavate.

Pseudolesteva is limited to the Atlantic regions of the continent.

TEVALES n. gen.

A single species, remarkably distinct from Fs. pallipes in general

habitus, forms the type of this genus, which is also confined as far

as known to the Atlantic faunal regions. These two genera of the

Atlantic slope are much more closely allied to the true Lesteva than

those of the Pacific fauna, and the latter are furthermore remarkable

as a group in having the pronotum deeply impressed at the sides.

T. cribratlllus n. sp. — Pale and uniform brownish-testaceous through-

out, the legs slightly paler; surface rather shining; pubescence uniform,

moderate in length, not dense. Head much wider than long, distinctly nar-

rower than the prothorax and about as wide as an elytron, finely densely and

distinctly punctate, indefinitely biimpressed, transversely impressed between

the antennae, the epistomal suture visible near the sides ; ocelli distinct, just

behind the line of the posterior limit of the eyes, distant by one third of the

total width ; eyes well developed, setose ; tempora less than one-half as long ;

antennte very slender, one-half as long as the body, second joint rather longer

than the third, fifth nearly three times as long as wide, eighth shorter than

the seventh or ninth. Piothorax one-fourth wider than long, the sides evenly

400 Coleopterological Notices, V.

arcuate and convergent to the apex from just before the middle, convergent

and strongly sinuate in basal half; base and apex equal; disk convex, even,

finely densely evenly and very distinctly punctate. Elytra more than twice

as long as the prothorax and three-fourths wider, longer than wide ; humeri

rounded and exposed ; sides just visibly divergent throughout ; disk strongly

densely punctate. Abdomen short behind the elytra, feebly, sparsely punctu-

late. Legs short but slender ; hind tarsi short, scarcely one-half as long as

the tibise. Length 2.7 mm. ; width 1.0 mm.

Pennsylvania.

The single specimen is a male, having the sixth ventral feebly

sinuato-truncate at apex. The maxillary palpi are as in Lesteua

pubescens, the second joint stouter than the third and fourth, the

third small, not quite as long- as wide and scarcely more than one-

sixth as long as the fourth. In Lesteva the head is constricted at

a much greater distance behind the eyes, the ocelli being notably

more basal, and the second antennal joint is rather shorter than the

third. In Pseudolesteva the second antennal joint is much shorter

than the third, and the fourth palpal joint is shorter and more gradu-

ally pointed toward apex.

UNAIWIS n. gen.

The species previously described as Lesteva truncata (Bull. Cal.

Acad. Sci., I, p. 322) demands without any doubt a special genus

for its reception. It is most closely allied to Artochia, resembling

that genus in the basal position of the eyes and obsolete tempora,

but differs in palpal structure and in the tarsi. In Unamis the

hind tarsi are long and slender, with the basal joint equal to the

next two together.

ARTOCHIA n. gen.

Body small, rather narrow, the head small, triangular, with the

front somewhat prolonged ; eyes basal, densely setose, the head

transversely constricted immediately behind them ; ocelli widely

distant and on the edge of the transverse constriction. Antennae

incrassate, much shorter than in any other genus of this group.

MaxilltB with the inner lobe elongate, arcuate aud feebly ungulate

at apex, with an inner fringe of very minute sette ; outer lobe as

long as the inner, very slender, gradually thicker near the base,

arcuate at apex, the latter with a terminal tuft of minute setae;

oardo very large, elongate, densely pubescent. Labial palpi with

Coleopterological Notices, V. 401

the last joint slender and greatly elongate as usual. Cox£e all con-

tiguous. Mesosternum feebly carinate; metasternum long. Elytra

extending to the middle of the second ventral. Le^s short and

stout ; tibife sparsely spinulose, the anterior thick but abruptly

narrowed at base in the male ; tarsi short, the first four joints of

the posterior equal in length.

A. prodlictifrons n. sp. — Black, finely, densely punctate tlirougliout,

the antennpe dusky ; legs pale flavo-testaceous ; integuments feebly shining,

the pubescence fine, short and abundant. Head with labrum acutely tri-

angular, longer than wide, evenly convex, just visibly and obliquely bi-

impressed beyond the eyes, the latter large, moderately convex ; epistomal

suture feebly indicated ; antennae scarcely as long as the head and prothorax,

gradually incrassate, outer joints barely as long as wide, eleventh conoidal,

about as long as the two preceding, second much longer and thicker than the

third, fourth shorter than the third. Prothorax transversely subquadrate,

two-fifths wider than long, nearly one-half wider than the head, sides sub-

parallel, very obtusely rounded at the middle, straight thence to the base and

apex ; base truncate, rather wider than the apex ; disk transversely, evenly

convex, impressed at each side, the margins thence to the base narrowly ex-

planate. Elytra as lung as wide, three-fourths longer and scarcely two-fifths

wider than the prothorax ; humeri very narrowly exposed, rounded ; sides

just perceptibly divergent, nearly straight ; apex truncate ; disk very broadly

and feebly impressed along the suture except at base. Abdomen less punctate,

much shorter than the elytra, rapidly acute at apex ; border strongly in-

clined. Length 2.1 mm. ; width 0.9 mm.

California (Gilroy Springs, Sta. Clara Co.).

The unique type appears to be a male, but the sixth ventral is

rather longer than the fifth, and is feebly subtruncate at apex.

VELtlCA Casey.

This genus, with Tilea, forms a group immediately distinguish-

able from the two preceding by the less basal eyes and absence of

the transverse dorsal constriction behind them. The complete

absence of any trace of ocelli is such an exceptional character, that

I have taken care to verify it in a number of specimens and under

the most favorable optical conditions. Otherwise Vellica is closely

allied to Tilea, differing in the small size of the body, narrower and

more convex form and non-explanate sides of the pronotura.

402 Coleojiterological Notices, V.

TILEA Fauvel.

Phheopterus Mots. i. litt. ; Phlosopterus Csy., olim.

This is the most conspicuous of the endemic North American

genera of Omalini, although probably occurring also in Siberia ; I

believe there is no record of its having been taken there, however.

The two species previously assigned by me to PhlcBopterus — an

erroneous quotation of Phlseopterus Mots. i. 1. — belong in reality

to Tilea, which has the fourth joint of the maxillary palpi, not one-

half longer than the third as stated in the original description, but

about twice as long as the third in the female, and often distinctly

longer, especially in the male.

The sexes differ but very little in general appearance, the female

is however usually a little larger, relatively broader, and often with

the elj^tra distinctly longer, and the male has the anterior tarsi

slightly stouter toward base. The sixth ventral segment in the

male is more or less sinuately or arcuately truncate, but is longer

and parabolically rounded in the female.

There are a number of distinct species of Tilea in North America,

all confined to the true Pacific fauna, which descends to some extent

also from the north along the crests of the Rocky Mountains indefi-

nitely to the southward. Of T. camcollis Fvl. I have examined

two specimens, one forming part apparently of the original lot from

Vancouver, and the other taken in the high sierras of California ;

it differs distinctly from longipalpus in its narrower form and in

thoracic structure.

The seven species thus far discovered may be readily distin-

guished as follows: —

Elytra long, always distinctly more than twice as long as the prothorax ; body

black or piceoiis-black.

Femora paler toward base, 6.75 mm. Unalaska Island fiisconigra

Femora not paler toward base. California to Vancouver.

Prothorax strongly transverse.

Sides of the pronotum broadly, feebly reflexed behind the fovea but

only very narrowly and feebly declivo-subexplanate from the lateral

angles to the apex ; prothorax smaller when compared with the

elytra — 9 cavicollis

Sides of the pronotum deeply concave and strongly reflexed continu-

ously from the apical angles to the base, more broadly behind the

fovea ; form distinctly broader, the prothorax nearly as wide as the

elytra — J lOUgipalpus

Coleopierological Notices, V. 403

Prothorax much smaller and only slightly wider than long, perfectly

similar in the two sexes.

Larger species, the elytra each strongly rounded at apex ; hypomera

narrow, much less than one-half as wide as the distance thence to the

coxae ; tempora not one-third as long as the eye — % rufitarsis

Smaller, the elytra narrower, each subtruncate at apex, the lateral

angles much less broadly rounded and oblique ; hypomera fully one-

half as wide as the distance thence to the cox.-e ; tempora nearly one-

half as long as tlie eye and more prominent than in rtijitarsis — '^ .

filicoriiis

Elytra short, always distinctly less than twice as long as the prothorax ; color

of body paler, castaneous throughout. Rocky Mts.

Head strongly and densely punctate throughout ; antennae with the inter-

mediate joints more than three times as long as wide, more finely and

densely pubescent ; sides of the prothorax oblique and very feebly,

broadly sinuate from the lateral angles to the base; large species, the

male with the sixth segment sinuato-truncate at apex — % .

1)revi|>enni»

Head minutely and remotely punctate especially toward the middle ;

antennae with the joints rather shorter and more coarsely pubescent ;

sides of the prothorax very strongly constricted behind, deeply sinuate,

becoming subparallel toward base; male with the sixth segment some-

what lobed in the middle, the anterior tarsi more noticeably dilated ; size

much smaller — % castanea

It is possible that fa sconigra Miikl. may be the same as cavicollis

or longipalpus, but considering the remote locality and the undoubted

plurality of species in the genus, the chances are decidedly against

such identity.

T. rufitai'Sis n. sp. — Rather shining, black throughout, the trochanters

and tips of the coxae feebly rufescent ; pubescence dense, suberect, consisting

of longer stifFer and more erect, and shorter and finer hairs, confusedly inter-

mingled especially on the elytra. Head finely, densely punctate, distantly

biimpressed between the eyes, transversely impressed between the antennae,

the latter slender, filiform, black, not at all incrassate, more than one-half

as long as the body, the joints fully three times as long as wide and feebly

obconical ; eyes well developed, prominent ; tempora very short ; ocelli small,

separated by two-fifths the entire width ; fourth palpal joint one-half longer

than the second and much more than twice as long as the third in both sexes.

Prothorax small, one-third wider than long, widest and laterally subangulate

at two-fifths from the apex ; sides thence to the base convergent and evenly

sinuate throughout, to the apex more feebly convergent and broadly arcuate ;

basal angles nearly right but slightly blunt; disk finely, densely punctate,

even though ft-ebly distantly and obliquely biimpressed at basal third, and

with a large deep impression at each side at the middle; surface anteriorly

broadly, evenly convex from one lateral edge to the other, the side margins

404 Coleopterological Notices, V.

not at all explanate even near the basal angles. Elytra in the male two and

one-half times as long as the prothorax, in the female nearly three times as

long, longer than wide, near the apex almost twice as wide as the prothorax ;

sides nearly straight, feebly divergent, external apical angles very broadly

rounded and oblique ; punctures fine but strong, dense. Scutellum more

finely and extremely densely punctate. Abdomen very short behind the elytra,

extremely minutely, densely punctulate. Leys slender. Length (j.0-6.3 mm. ;

width 2.3-2. (j mm.

California (Siskiyou Co.).

The male has the intermediate tibife very feebly swollen, slightly

constricted in apical fourth, the constricted part glabrous; in the

female the same tibiae are more slender and have the glabrous ter-

minal part scarcely at all constricted but occupying almost one-third

of the total length. Three specimens.

T. breTipeiinis n. sp. — Strongly shining, castaneous, the legs and

coxse paler, rufous ; pubescence fine, moderate in length, abundant and uni-

form. Head finely, densely punctate, nearly as in ritfitarsis, the fourth palpal

joint fully twice as long as the third and one-half longer than the second ;

antennae veiy slender, filiform, rufous, three-fifths as long as the body, the

joints very elongate, scarcely perceptibly obconical, the tenth very nearly

three times as long as wide. Prothorax one-half wider than long and one-half

wilier than the head, widest and obtusely subangulate at tlie sides just before

the middle ; sides thence to the base convergent and feebly sinuate, becoming

more sinuate only extremely near the basal angles which are right and not

blunt, to the apex feebly convergent and slightly arcuate; apex feebly bisinu-

ate ; disk finely, closely punctate, not at all impressed on the disk near the

base, the lateral impression large but only moderately deep ; sides broadly,

feebly reflexed from the bind angles past the fovea to apical fourth. Elytra

not quite as long as wide, four fifths longer than the prothorax, and, near the

apex, two-fifths wider than the latter ; sides nearly straight and divergent

from the exposed but rounded humeri nearly to the apex ; disk strongly,

moderately densely punctate. Abdomen short, very minutely, densely punc-

tulate. Legs very long and slender. Length (3.5 mm. ; width 2.6 mm.

Wyoming.

The single male before me has the intermediate tibias slender and

almost evenly cylindrical, with the glabrous apical part extremely

short and not in the least constricted, differing greatly in this re-

spect from rujitarsis.

T. castanea n. sp. — Less broad, strongly shining ; castaneous ; legs and

antenn* rufo-testaceous ; pubescence fine, dense, uniform and inclined. Head

finely puTictate, sparsely so toward the middle, otherwise as in mfitarsis but

with rather longer and more angulate tempora ; antennae filiform, three-fifths

Coleopterological Notices, V. 405

as long as the body, stouter than in hreripennis, the outer joints more strongly

obconical, the tenth scarcely more than twice as long as wide. Prothorax

minutely but closely, strongly and evenly punctate, evenly convex, nearly

as in brevipennis but with the sides broadly constricted toward base, becoming

nearly parallel for some distance before the basal angles, which are right and

not blunt; base broadly, feebly sinuate, narrower than the apex, the latter

feebly bisinuate; disk simply feebly subexplanate from the fovea to the basal

angles, not in the least reflexed, declivous to the edge from the lateral obtuse

angulations to the apex; lateral fovese large and very deep, the bottom punc-

tiform. Scutellum large, very densely and more finely punctate. Elytra as

long as wide, not quite twice as long as the prothorax, and, near the apex,

about one-fourth wider ; humeri broadly rounded to the base of the prothorax,

but slightly exposed at base ; sides straiglit, divergent ; disk strongly, evenly,

moderately closely punctate. Abdomen subobsoletely punctulate. Lecjs moder-

ate in length, stouter and shorter than \\\ brevipennis. Length 4.7-5.0 mm. ;

■width 1.9-2.0 mm.

Colorado.

The two specimens represent a species allied to hi^evipennis but

differing in the much smaller size, relatively longer elytra, stouter

antennfe and legs, deeper pronotal impressions and nnreflexed lateral

edges of the pronotura, as well as in the sparser, finer punctures of

the head and the male sexual characters at the ventral apex. The

anterior tarsi of the male are more strongly dilated toward base

than in brevipenins, and both the anterior and intern)ediate are

papillose beneath. As in rvfitarsis the elytra are distinctly longer

in the female than in the male.

OROBAXUS LeConte.

In view of the radical difference in palpal structure, the approxima-

tion of this genus to Lesteva is very remarkable. It resembles Les-

teva in the very slender cylindrical posterior tarsi, with the basal joint

subequal to the next two, in the filiform antennae, duplex labrum,

and in general appearance, but the spinules of the tibiae are replaced

by a few long slender flexible setae, and the maxillary palpi are short

stout and densely pubescent, with the fourth joint small slender and

subulate. The pronotum is feebly impressed at the sides, thus con-

forming partially to the general law affecting all the Californian

allies of Lesteva. The tl»ree species may be separated as follows: —

Eyes smaller, subequal in size to the tempora and not more prominent ; out-

line and humeri as in njipes. Rocky Mts simulator Lee.

406 Coleojyterolofjical Notices, V.

Eyes larger, much longer and more prominent than the tempora.

Elytra with the sides strongly divergent from the humeri, which are

obliquely rounded to the prothorax. Pacific fauna rilfipes Csy.

Elytra with the sides feebly divergent, the humeri much more broadly ex-

posed, becoming transverse at base near the prothorax. Sonoran fauna.

densiis Csy.

All of these species are minutely, very densely punctate and

pubescent.

GEODROMICVS Redt.

The members of this genus include some of the larger of the

Omalini and are abundant in the western parts of North America.

As remarked by Mr. Fauvel, the form of the body recalls Lesteva,

or, it might be added, Orobanus, rather than Anthophagus with

which the species were united by Gemminger and Harold; in the

structure of the palpi they are somewhat intermediate between

Orobanus and Anthophagus and differ greatly from Lesteva. The

posterior tarsi, however, with the first four joints short and stout,

together scarcely longer than the fifth, will at once distinguish the

genus from Anthophagus. At the same time, integer, although

perfectly normal in tarsal and palpal structure, seems to diverge in

the direction of Anthophagus in the form of the prothorax, and a

divergence in the same direction is also observable in the tarsus of

debilis.

The American species known to me may be distinguished by the

following characters : —

Prothorax never transversely quadrangular, the disk not at all explanate

near the liind angles.

Pronotum with a more or less distinct impression along the median line, the

prothorax often much larger and of a ditferent form in the male ; last

joint of the maxillary palpi longer, subulate and much narrower than

the apex of the third, although frequently nearly as long as the latter.

Larger species, pale castaneous, clouded with blackish toward the apices

of the elytra, the abdomen paler and with a large blackish subapical

cloud. Atlantic regions IbriimieilS

Smaller, the abdomen black or slightly piceous and uniform in coloration.

Sides of the prothorax deeply sinuate posteriorly, becoming subparallel

near the base.

Pronotum strongly and closely punctate, the prothorax much larger

in the male than in the female.

Elytra more finely, moderately densely punctate ; anterior tibise

of the male slender, nearly equal in diameter throughout, fully

twice as long as the tarsi, the latter moderately dilated.

strictus

Coleopterological Notices, V. 407

Eljtra more coarsely deeply and sparsely punctate ; antennae

stouter ; anterior tibiae of the male shorter, thick, narrowed

near the base and less than twice as long as the tarsi, the latter

more dilated failTeli

Pronotum more finely feebly and much more sparsely punctured ;

discal parts of the elytra more or less indefinitely clouded with

a paler rufescent tinge.

Elytra shorter, with the sides very strongly divergent, coarsely,

very sparsely punctate; abdomen with five exposed segments;

border very wide ; size larger, the form broader — 9-

OTipennis

Elytra longer, the sides less divergent ; punctures finer and more

abundant ; abdomen with scarcely more than four exposed

segments; border narrower — 9 nul>ilatll8

Sides of the prothorax oblique and feebly sinuate behind, the base

relatively wider ; small species, pale flavescent in color, the punctua-

tion fine and sparse ; elytra small, much shorter than wide ; tarsi

longer and more slender (lebilis

Pronotum without trace of an impressed median line, almost similar in the

male and female ; body intense polished black throughout. California.

Tempora rounded but rather prominent and subrectangular ; prothorax

wider than long ; punctures smaller and closer ; last joint of tlie

antennae much longer than the tenth temporalis

Tempora very convergent and broadly rounded, not at all prominent ;

prothorax not distinctly wider than long, nearly as in Orobanus but

more convex ; punctures strong and sparse ; last joint of the antennae

only just visibly longer than the tenth ; last joint of the maxillary

palpi smaller IlUIUIJOldtiailllS

Prothorax transverse, nearly as in Anthophagus, the sides but feebly conver-

gent behind and very feebly, broadly sinuate ; surface explanate toward the

hind angles ; last joint of the maxillary palpi short, subulate ; posterior

tarsi short, stout and normal integer

G. 'brunneus Say. — Touru. Ac. Phila., Ill, p. 158 ; verticalis Say : Trans.

Am. Phil. Soc, IV, p. 4tJ3 ; ctvsus Er. : Gren. Staph., p. 853.

It is somewhat remarkable that Erichson should have failed to

recognize in his ceesvs the species described by Say as brunneus,

for the cloud of black near the apex of the tergum, in connection

■with the size of the body — slightly under a quarter of an inch or

6 mm. — is very characteristic of the species. Verticalis is prob-

ably a smaller female specimen, the great difference in form of the

male and female prothorax possibh' not having been noticed by

Say.

408 Coleopterological Notices, V.

G. Stricttis FvL— Kev. d'Ent., 1889, p. 126 ; nlgrita Fvl. nee Miill. : Not.

Ent., 7, 1878, p. 90,

Abundant from New York and Massachusetts to Michigan.

Easily known by its black polished integuments and smaller size

from hrunneus, the only other species inhabiting the same districts.

G. faiiveli n. sp. — Stout, feebly convex, polished, dark and uniform

pioeo-castaneous throughout ; pubescence sliort and very sparse. Head finely

and sparsely punctate, three-fourths as wide as the prothorax ; eyes large and

prominent, the tempora not one-half as long, rapiUly convergent and feebly

arcuate ; vertex deeply impressed in the middle and with two short deep

divergent grooves ; epistoma impunctate, deeply, arcuately impressed, the de-

pression connected with the vertical impression by a feeble channel ; antennfe

filiform but rather stout, nearly three-fifths as long as the body, the basal

joint stout, twice as long as wide, second shorter than the fourth, third very

much longer, obconical, three times as long as wide, eleventh one-half longer

than the tenth. Prothorax one-half wider than long, the sides strongly, evenly

rounded, rapidly constricted toward base, becoming parallel in basal fifth or

sixth ; base truncate, one-third wider than the apex ; disk widest before the

middle, deeply, rather coarsely and closely punctate, deeply impressed along

the median line except near the apex, with a deep transverse pit before the

scutellum. Elijtra scarcely as long as wide, as long as the head and prothorax,

near the apex two-fifths wider than the latter ; sides straight, strongly diver-

gent; humeri widely exposed ; humeral width scarcely four-fifths of the sub-

apical ; punctures coarse, deep and not dense. Abdomen finely but not very

densely punctate ; border moderate. Legs and coxae pale rufo-ferruginous ;

under surface blackish-piceous. Length 5.8 mm. ; width 2.0 mm.

Oregon (The Dalles).

Allied to strictus but amply distinct in its broader form, much

more divergent sides of the elytra, longer and stouter antennsB,

and the sexual differences in the anterior legs, which are very

marked. A single male.

G. ovipeunis Lee— Bull. U. S. Geol. Surv., 1878, IV, ii, p. 452 ; FtI. :

Not. Ent., 7, p. 89 ; plagiatus Fvl. nee Fab.: Rev. d'Eut., 1889, p. 125.

The specimens of ovipennis which I have examined can be distin-

guished very readily 1 think from plagiatus or nigrita by their

broader form, much sparser punctures which are coarser on the

elytra, the latter being much more abbreviated, and by the broader

abdominal border. I have seen no North American examples

which could be referred very satisfactorily to plagiatus.

G. lilllbilatus n. sp. — Polished black with a feeble piceous tinge, the

apex and lateral margins of the abdomen slightly paler ; legs, mouth parts

Coleopterological Notices, V. 409

and antennae ferruginous ; elytra each with a rufescent cloud from near the

humerus to the middle; pubescence fine, subrecumbent, sparse but rather

long. Head fully four-fifths as wide as the prothorax, deeply impressed and

bistriate in the middle between the eyes, the epistomal depression scarcely

connected by a groove; eyes large, very convex, the tempora scarcely more

than one-half as long, very convergent, broadly arcuate ; antennae three-fifths

as long as the body, moderately stout, the outer joints not quite three times

as long as wide, equal, eleventh one-half longer than the tenth. Prothorax

not quite one-third wider than long, widest at apical third ; sides strongly

constricted behind, becoming abruptly parallel in basal fifth or sixth ; base

truncate, much wider than the apex ; disk finely, very sparsely punctate,

feebly but distinctly impressed along the median line from the apical margin

to the deep transverse antebasal fovea. E/i/tra not quite as long as wide, dis-

tinctly longer than the head and prothorax ; humeri broadly exposed ; sides

moderately divergent ; outer apical angles rather broadly rounded ; disk not

coarsely, somewhat sparsely punctate, broadly impressed along the suture

toward base. Abdomen barely as wide as the elytra and much shorter,

polished, finely, sparsely punctulate ; border moderate. Length 4.4 mm. ;

width 1.55 mm.

New Mexico (Las Yegas).

Distinguishable from ovipennis by its smaller size, longer elytra

with much less divergent sides and many other characters. The

fourth joint of the maxillary palpi in the single female before me

is very nearly as long as the third, fusiform and gradually pointed,

and by this character, as well as the stouter antennae and much

finer, sparser punctures of the head and pronotum, it can be readily

separated from plagiatus or any of its varieties.

In the female of ovi2Jen7Hs the humeral width of the elytra is not

more than three-fourths of the subapical, while in nubilatiis the

ratio is fully four-fifths.

G. debilis n. sp. — Highly polished, very sparsely and rather coarsely

pubescent, pale flavo-testaceous. the head a little less pale and the abdomen

picescent. Head scarcely visibly narrower than the prothorax, the eyes

small, strongly convex, scarcely longer but very much more prominent than

the tempora ; surface very finely, remotely punctate, the median impression

and diverging lines distinct, not connected with the strong epistomal depres-

sion ; ocelli extremely feeble ; fourth joint of the maxillary palpi almost as

long as, but much narrower than, the obconical third; antennae rather stout,

filiform, three-fifths as long as the body, the tenth joint twice as long as wide,

three-fifths as long as the eleventh. Prothorax scarcely visibly wider than

long, rounded at the sides anteriorly, feebly, gradually narrowed behind,

feebly constricted at basal fourth ; disk finely, very remotely punctate, with

a median impression attaining neither the apex nor the subbasal transverse

fovea. Elytra small, three-fourths longer than the prothorax, and, near the

Annals N. Y. Acad. Sci., VII, Nov. 1893.— 27

410 Coleopterological Notices, V.

apex, twice as wide ; sides nearly sti-aiglit, very strongly divergent ; humeral

width scarcely more than two-thirds of the subapical ; jnnicti;res rather

strong but sparse. Abdomen well exposed, as wide as the elytra and rather

longer, finely but not densely punctulate, the border moderate. Length 4.0

mm. ; width 1.5 mm.

Colorado.

The type appears to be a female, but the ventral apex is concealed

so that I cannot be entirely certain. The tarsi are aberrant, the

first three joints of the posterior more elongate than usual and de-

creasing uniformly, the third and fourth subequal, fifth distinctly

shorter than the first four together- — a variation in the direction of

Anthophagus. This species is altogether distinct from any other

in its small size, small eyes, almost obsolete ocelli; small elytra

and many other characters.

G« temporalis n. sp. — Moderately broad and depressed, polished, black

throughout; legs, palpi and antennse black ; pubescence rather tine, sparse,

of the usual length, shorter and much more abundant on the abdomen. Head

distinctly narrower than the prothorax, tbe eyes large and strongly convex ;

tempora unusually strongly rounded but much less prominent than the eyes ;

vertexal impression distinct, the oblique grooves rather distant; epistoinal

■ depression large and strong; last joint of the maxillary palpi very much

shorter and narrower than the third ; antennae filiform, rather more than one-

half as long as the body, the outer joints strongly obconical, three times as

long as wide, eleventh two-fifths longer than the tenth. Prothorax very

slightly wider than long, widest at apical third where the sides are very

evenly, strongly rounded to the apex, moderately convergent and feebly

sinuate in -basal three-fifths; base truncate, a little wider than the apex;

disk strongly, rather closely, evenly punctate, with the usual median ante-

basal impression. Elijtra about as long as wide, twice as long as the prothorax

and four-fifths wider ; sides feebly divergent from the transversely exposed

.humeri, the humeral width fully four-fifths of tlie subapical ; disk very feebly,

broadly impressed on the suture toward base as usual, strongly and somewhat

closely punctate. Abdamen with about four and one-half exposed segments, a

little shorter than the elytra and equally wide ; border wide ; stomata distinct.

Legs rather short and somewhat stout ; tibiae gradually enlarged and more

densely pubescent from base to apex; tarsi short, normal. Length 5.7-5.9

mm. ; width 1.75 mm.

California (Sonoma Co.).

The description is drawn from the male, which has the sixth ven-

tral feebly sinuato-truncate at apex and the anterior tarsi strongly

dilated. The female differs extremely little in general appearance,

having the prothorax relatively smaller but identical in shape.

Three specimens.

Coleopterological Notices, V. 411

On the disk of the pronotum two very broad feeble parallel im-

pressions can be discerned behind the middle, which unite with the

transverse subbasal fovea ; these impressions are analogous to those

of Anthophagus al2oestris Heer, and perhaps some other species j

here, however, the disk is very convex and resembles Orobanus in

outline, being not at all suggestive of Anthophagus in these re-

spects.

G. blimlioldtianus n. sp. — Depressed, highly polished, deep hlack ;

coxEe and tarsi rufescent ; antennae black ; integuments strongly and sparsely

punctate, the abdomen minutely and densely so ; pubescence sparse, suberect,

uniform and coarse, moderately long, short subrecumbent and dense on the

abdomen. Head as wide as the prothorax, as wide as long, strongly constricted

at base, the constriction as usual extending sharply across the dorsal surface,

where it is broadly, anteriorly angulate ; surface with a deep depression in

median third between the eyes, limited laterally by oblique excavated lines,

arcuately impressed between the antennae, the epistoma impunctate ; ocelli

on a line with the posterior limits of the eyes distant by less than one-third of

the total width ; eyes well developed, convex and very prominent ; tempora

shorter, not at all prominent, convergent and arcuate ; antennae slender, fili-

form, nearly three-fifths as long as the body, the joints fully three times as

long as wide. Prothorax nearly as long as wide, the sides evenly rounded,

becoming convergent and sinuate posteriorly, subparallel in basal fourth ; base

truncate, rather wider than the apex ; disk widest at apical third, strongly,

evenly convex, impressed in the middle near the base. Elytra twice as long

as the prothorax, and, near the apex, twice as wide ; humeri rather broadly

exposed, rounded; sides straight and strongly divergent; humeral width

three-fourths of the subapical ; disk broadly, feebly impressed in the middle

toward base. Abdomen with nearly four exposed segments, shorter than the

elytra ; border wide, moderately inclined. Legs long and rather slender,

finely, densely pubescent ; posterior tarsi less than two-fifths as long as the

tibiae; claws long, slender, arcuate. Length 4.4 mm. ; width 1.65 mm.

California (Humboldt Co.).

The type is a male, having the sixth ventral short and broadly

emarginate throughout at apex, the median segment of the seventh

with a thin laminate carina in the middle toward base ; anterior

tarsi moderately dilated. I obtained the unique representative on

the under side of a small loose stone in the dry bed of a rivulet

near Fort Gaston.

This species differs from temporalis in its smaller size, still sparser

and stronger punctuation, less prominent and more convergent tem-

pora, and in the very strong median lamina of the seventh ventral,

which is completely wanting in temporalis.

412 Goleopterological Notices, V.

G. integer n. sp. — Broad, more parallel, feebly convex, polished, tlack

throughout; tarsi, tibiae toward tip and femora toward base feebly rufescent ;

pubescence moderate in length, inclined, rather abundant and distinct. Head

scarcely more than two-thirds as wide as the prothorax, the eyes prominent ;

tempora short, strongly convergent and arcuate ; median impression wide, the

oblique grooves distant ; a median impressed channel connects the large deep

epistomal depression ; last joint of the maxillary palpi subulate, very much

iiarrowei- than the third and only one-half as long ; antennae filiform, three-

fifths as long as the body, the joints very long, just visibly obconical, rather

more than three times as long as wide, the eleventh but slightly longer than

the tenth. Prothorax one-fourth wider than long, the sides evenly rounded

anteriorly, feebly convergent and broadly, just visibly sinuate in basal half;

base truncate, very wide, nearly one-half wider than the apex ; disk evenly,

broadly convex, rather strongly, closely punctate, feebly explanate at the

hind angles, without distinct median impressed line and devoid of ante-basal

fovea. Elytra nearly as long as wide, two-thirds longer than the prothorax,

and, near the apex, two-fifths wider ; humeri very slightly exposed at base,

the humeral width but slightly exceeding that of the prothorax and about

five-sixths of the subapical ; sides noticeably divergent ; outer apical angles

rather broadly rounded ; disk finely, rather sparsely but distinctly punctate.

Abdomen- scarcely as wide as the elytra and much shorter, with five exposed

segments, minutely, sparsely punctate, the border moderate. Legs moderate

in length and thickness ; tarsi normal. Length 6.0-6.3 mm. ; width 2.3 mm.

Washington State.

The male, which serves as the type, diflfers from the female only

in its larger prothorax, the latter being however identical in shape ;

in the female the elytra are nearly tw^ice as long as the prothorax

and three-fourths wider. The male has the sixth ventral rather

deeply sinuate at apex throughout the width, and the anterior tarsi

strongly dilated.

PELECOMALiriW Casey.

This genus will include nearly all the North American species

hitherto assigned to Amphichroum, and differs radically and con-

stantly from the latter in the structure of the tarsi. The tarsi

throughout have the penultimate joint deeply bilobed and clothed

beneath with long papillose pubescence ; in Amphichroum they are

slender, compressed, Avith the penultimate joint not at all wider

and devoid of all trace of lobes, the fifth joint being inserted at its

obliquely truncate apex. In the present genus the intermediate

coxaj are contiguous, while in Amphichroum they are narrowly

but perceptibly separated.

Coleopterological Notices, V. 413

Pelecomalium also differs from Amphichroum in a singular palpal

character, the sexual nature of which I did not notice until shortly-

after ray original description appeared, and which lead to the assign-

ment of the two sexes of modestum to different genera. In the male

the fourth palpal joint is strongly securiform, while in the female it

is slender, slightly compressed and gradually somewhat obliquely

narrowed to the apex, where it is very narrowly but obliquely

truncate. In Amphichroum there are no discoverable sexual differ-

ences in the palpi, the last joint of which is stouter towai'd base

and prolonged slender and cylindrical toward apex, differing no-

ticeably from the form characterizing either sex of Pelecomalium.

To Amphichroum there are but two described North American

species assignable at present, viz. : maculatum Lee. (Stachy-

graphis) which is quite homologous with canaliculatum, and

Jioribundum Lee. {=^ fiavicorne Csy. 9 ), which is slightly aber-

rant in sculpture and in its much longer and more slender maxil-

lary palpi, agreeing however otherwise. I have in my cabinet a

female taken at Lake Tahoe in June, which differs from the male

of maculatum, as figured by Dr. Horn, in its broader form, much

shorter and wider prothorax and uniformly flavate elytra ; there

is no way of proving its identity, but in view of the limited

number of specific forms assignable to Amphichroum in both con-

tinents, and of the fact that in Jioribundum and some species of

Pelecomalium the female is notably paler as well as broader than

the male, I think there can be little doubt that it is the female of

maculatum.

The species are rather closely allied among themselves but may

possibly be identified by the following tabular statement: —

Punctures of the elytra more or less sparse, never extremely dense.

Species of the Pacific coast fauna.

Larger, not less than 4 mm. in length ; prouotum more or less alutaceous

and subimpunctate.

Prothorax transverse, fully one-half wider than long in the male ; body

llavate, immaculate, the head and abdomen blackish. ..testaceiim

Prothorax subquadrate, scarcely one-third wider than long in the male,

testaceous, the head and abdomen black ; elytra each with a large

elongate discal spot of black beyond the middle. ...;...'binotatllIIl

Smaller, always much less than 4 mm. in length.

Elytra extremely sparsely and obsoletely punctulate, tlie punctures

scarcely distinguishable ; surface throughout highly ijolished.

sparsum

414 Coleopterological Notices, V.

Elytral punctures distinct and much less sparse.

Abdomen black.

Elytra piceo-fuscous piloselltini

Elytra llavate, with a triangular scutellar spot of blackish.

sciitatiiin

Elytra clear and uniform pale llavate throughout.

piiberiiliini

Abdomen flavate, more or less clouded with piceous toward the middle

and apex; elytral punctures very strong flaTesceilS

Species of the Atlantic region. Polished ; prothorax transverse, subimpunc-

tate ; elytra piceous in the male, with paler side margins, frequently

wholly llavate in the female, the punctures sparse, feeble and ill-defined.

laevicolle

Punctures of the elytra exceedingly dense.

Elytra normal, large, one-half or more longer than the prothorax.

Dark in color, the sides of the elytra sometimes feebly and indefinitely

paler and the lateral and basal edges of the pronotum testaceous.

Ocelli small, clearly defined, more prominent and less distant.

Prothorax in the female less transverse, two-fifths wider than long,

more strongly narrowed toward apex, the sides more narrowly fiat

and explanate near the basal angles ; elytra in that sex one-half

longer than the prothorax opacillum

Prothorax in the female nearly three-fifths wider than long, less

narrowed toward apex and with the sides of the disk near the

basal angles more broadly concave and refiexed ; elytra in that sex

nearly three-fourths longer than the prothorax {veterator Csy. 9 )•

modestiim

Ocelli large, suflfused and distinctly more distant ; pronotum more

strongly punctate ; antennae noticeably more incrassate.

crassicoi'iie

Pale in color and more rufoiis ; elytra often feebly infumate along the

apex ; abdomen blackish ; pronotum very densely and distinctly punc-

tate nearly like the elytra pallidum

Elytra small, quadrate, distinctly less than one-half longer than the pro-

thorax ; body dark, piceous-black in color, the sides of the elytra and

base and side margin of the pronotum in basal two-thirds paler.

aliitaceiini

The Australian species assigned to Amphichroum, with their

transverse anteunal joints, will in all probability also have to be

separated generically.

P. flavescens n. sp. — Rather broad, depressed, polished throughout,

flavate, the abdomen black ; posterior portions of the head piceous ; antennae

feebly infumate toward apex ; pubescence very minute, sparse and incon-

spicuous. Head one-half as wide as the elytra, slightly wider than long ; eyes

convex, well developed ; vertex and front flattened, the two divergent grooves

ColeoiJferological Notices, V. 415

of the former distinct ; antennae slender, cylindrical, very feebly incrassate,

one-half as long as the body, all the joints elongate, the eleventh cylindrical

in basal half, thence conical to the pointed apex. Prothorax transverse, on«-

half wider than long, the sides broadly, almost evenly arcuate; apex four-

fifths as wide as the base ; disk impunctate but with small scattered punctures

near the basal margin, broadly, feebly convex, even, just visibly flattened

before the scutellum, narrowly explanate along the sides. Scutellum trian-

gular, polished, impunctate. Elytra ample, quadrate, at base as wide as the

prothorax, three-fourths longer ; sides nearly straight, feebly divergent from

base to apex ; disk with sparse, evenly distributed and very distinct punc-

tures. Abdomen fully as wide as the elytra but scarcely as long, sparsely and

extremely feebly punctnlate, the border wide, feebly delimited and more

densely punctate. Legs moderate. Length 2.2-3.3 mm. ; width 0.85-1.3 mm.

California (Lake Tahoe).

The male characters, other than palpal, are very feeble, the gene-

ral form of the body and length and structure of the antenna? being

nearly identical in the two sexes; the fourth palpal joint is very

strongly securiform, and the intermediate tibia? are broadlv and

just visibly sinuate within. The tibiae are very feebly and sparsely

spinulose. Ten specimens.

P. pallidum n. sp. — Somewhat broad, feebly convex, shining though

feebly alutaceous, flavate ; abdomen black ; elytra feebly clouded with piceous

especially toward apex; head testaceous; antennae blackish in apical half;

pubescence short but abundant throughout. Head coarsely reticulate but

with only a few very fine and remote punctures, flattened above ; vertex

feebly, obliquely bistriate ; eyes well developed ; antennae very feebly incras-

sate, cylindrical, rather more than one-half as long as the body, all the joints

longer than wide, eleventh cylindrical in basal, and conical in apical, half.

Prothorax transverse, almost two-thirds wider than long ; sides rather strongly,

nearly evenly arcuate ; basal angles obtuse and rounded ; apex truncate,

three-fourihs as wide as the base ; disk feebly convex, narrowly explanate at

the sides, much more obliquely and broadly so toward base, almost perfectly

even, finely, densely punctate and rather coarsely reticulate, shining. Elytra

ample, scarcely as long as wide, at base subequal in width to the prothorax,

two-thirds ( ^ ) to three-fourths ( 9 ) longer than the latter ; sides nearly

straight, feebly divergent from base to apex ; disk flat, abruptly convex and

declivous at the sides, finely, very densely punctate but shining. Abdomen

shining, very feebly punctulate ; border wide, the dividing line very fine.

L«'gs moderate ; femora broad ; tibiae slender, finely and extremely sparsely

spinulose. Length 2.3-2.6 mm. ; width 0.8-1.0 mm.

California (Lake Tahoe) ; Nevada (Reno).

Easily distinguishable from the others of Fauvel's " Section B,"

by the pale coloration. The sexual differences in general form are

416 Coleopterological Notices, V.

very slight, but as usual the head is a little larger and the protho-

rax a trifle less transverse in the male than in the female ; in the

former sex the fourth palpal joint is strongly and normally securi-

form, and the intermediate tibiae broadly and distinctly sinuate

within just beyond the middle. Fifteen specimens, almost uniform

in size and coloration.

LATHRIWiEUM Ericlis.

The species of Lathrimieum are rather abundant in the western

parts of North America, but only one has been thus far recorded

from the Atlantic regions. The seven representatives in my cabinet

may be veiy readily distinguished as follows : —

Pronotum distinctly impressed along the median line except toward base.

Elytra flavate, each strongly, obliquely bimaculate with piceous-black, not

modified at apex in the female ; size larger.

Prothorax shorter and broader, more strongly arcuate at the sides ; strial

intervals of the elytra convex subcostatuill

Prothorax smaller, feebly rounded on the sides ; elytra smoother, the

strial intervals not distinctly convex.; pictllin

Elytra nearly uniform in coloration.

Larger species, never much less than 3 mm. in length, with the oblique

discal impressions near the base of the pronotum nearly obsolete ;

apices of the elytra obliquely produced in tlie female.

Narrower, castaneous ; prothorax three-fourths wider than long, feebly

rounded at the sides ; elytra much longer than wide.

flnietarium

Broad, piceous-black ; prothorax twice as wide as long, strongly rounded

at the sides ; elytra but slightly longer tban wide, tlie apices less

produced in the female nigl'Opiceillll

Small species, never much more than 2 mm. in length, tlie two approxi-

mate oblique impressions near the base of the pronotum very deep

and distinct, coalescent.

Prothorax very transverse, strongly and extremely widely reflexed at

the sides ; antennae more slender, one-half as long as the body ; color

pale brownish-flavate reflexicolle

Prothorax narrower, less broadly retiexed at the sides ; antennse shorter,

more incrassate toward tip; color piceous-black spretlllll

Pronotum not impressed along the median line ; surface even ; elytra short,

not more than twice as long as the prothorax SOI'didllllt

Of sordidum I have before me a single mutilated specimen from

Fredericksburg, Yirginia; it is remarkably distinct; the oblique

impressions of the pronotum are obsolete in this example, and the

Coleopterological Notices, V. 417

scutellum has a few coarse punctures. The species previous!}^ de-

scribed by me as humerale (Bull. Cal. Acad. Sci., II. p. 243) is

the same as subcostatum.

I.. lli$;ropiceiIIIl ii. sp. — Oblong, broad, rather convex, polished, gla-

brous and dark blackish-ijiceous throughout, the lateral edges of the pronotum

and elytra slightly paler from diaphaneity ; legs but slightly paler ; antennae

black, with one or two basal joints paler. Head short, transverse, scarcely

more than one-half as wide as the prothorax, broadly, feebly, longitudinally

biimpressed, the ocelli at the feeble niichal constriction separated by two-fifths

of the entire width ; eyes well developed ; antennae as long as the head and

prothorax, gradually rather strongly incrassate, outer joints wider than long.

Prothorax very short, fully twice as wide as long, the sides strongly, evenly

arcuate ; base transverse, wider than the apex ; disk coarsely, strongly,

rather densely and unevenly punctate, very broadly explanate at the sides

and with the usual sublateral impression just before the middle ; oblique

snbbasal impressions feeble but distinct. Elytra very slightly longer than

wide, a little wider than the prothorax and more than three times as long ;

sides parallel and broadly, feebly arcuate. Abdomen entirely covered by the

elytra. Leffs rather short, moderately slender. Length 2.7-3.3 mm. ; width

1.5-1.8 mm.

California (Sta. Cruz Co.).

The three specimens in my cabinet are females, and may be dis-

tinguished at once from the corresponding sex of Jim e tar ntm by

the dark color, shorter, broader form, and by the sculpture of the

elytra which, though similar in general to that of fime.tarivmi, is

more closely and unevenly punctate, the difference in size between

the minute punctures of the intervals and the coarser sculpture of

the series being much more marked than in that species.

1a, reflexicolle u. sp. — Oblong, convex, very broad, polished, pale

brownish-tlavate, the head and elytra feebly picescent, the latter paler at the

humeri and along the lateral margins. Head wider than long, rather large,

fully three-fifths as wide as the prothorax, strongly, rugosely punctate toward

base but finely and sparsely so anteriorly ; ocelli distant by two-fifths the

width ; eyes well developed ; nuchal constriction subobsolete ; antennae slen-

der, feebly incrassate, the sixth joint nearly twice as long as wide, eighth

distinctly longer than wide, tenth scarcely wider than long. Prothorax rather

more than twice as wide as long, the sides broadly, somewhat unevenly arcu-

ate ; base a little wider than the apex ; disk coarsely densely and rugosely

punctate, more sparsely and evenly so near the sides, broadly, strongly re-

Hexed laterally, with a punctiform fovea in the middle rather distant from the

lateral margin ; median snbbasal impressions eoalescent, forming a transversely

arcuate cliannel. Elytra two and one-half times as long as the prothorax, and,

toward apex, fully one-third wider ; sides distinctly divergent from the feebly

418 Coleopterological Notices, V.

oblique and unexposed humeri and nearly straight ; outer angles broadly-

rounded ; apex truncate ; disk coarsely, not very densely and deeply punc-

tate, the punctures forming uneven series with feebly convex punctate inter-

vals. Abdomen very short and rapidly pointed behind the elytra, pale, shining

and subimpunctate. Length 2.0 mm. ; width 1.2 mm.

British Columbia (Stickeen River Caiion). Mr. H. F. Wickham.

Tlie single specimen from which the description is taken is a male,

and may possibly be immature. It is distinguishable at once by its

small size and very broadly concave and reflexed side margins of the

prothorax.

L,. spretum n. sp. — Short, broad, polished, convex, piceous-black, the

side margins slightly paler from diaphaneity ; legs paler ; antennae black,

paler at base. Head two-thirds as wide as the prothorax, wider than long,

strongly, densely punctate toward base, the clypeus subimpunctate ; ocelli

separated by one-third of the total width, the nuchal constriction almost

obsolete; surface impressed near each ocellus and also obliquely at the sides

of the clypeus ; antennae but slightly longer than the head and prothorax,

slender, rather rapidly strongly incrassate near the tip, sixth joint one-half

longer than wide, the tenth transverse. Prothorax scarcely twice as wide as

long, the sides rather strongly rounded, convergent and nearly straiglit

toward base, widest before the middle ; basal angles obtuse but not rounded ;

base not distinctly wider than the apex ; disk strongly and closely but

scarcely rugosely punctate, explanate at the sides, the sublateral fovea before

the middle and near the edge ; median subbasal impressions strong, coales-

ceut, forming a posteriorly angulate transverse channel. Elytra quadrate,

almost three times as long as the prothorax and nearly two-fifths wider ; sides

subparallel, nearly straight ; humeri distinctly exposed at base ; apex trun-

cate, the sutural angles not at all produced ; disk strongly punctate, the

punctures forming dense close and rather well-marked series with the inter-

vals feebly convex and finely remotely and subserially punctate. Abdomen

extremely short and broadly obtuse behind the elytra, black, subimpunctate.

Length 2.2 mm. ; width 1.2 mm.

California (Siskiyou Co.).

The unique type is a female but cannot be confounded with re-

fiexicolle, as the numerous differences are not at all suggested in

the large series of males and females of subcoslatum. which I have

before me. The present species differs from reJiexivoUe in the

very much more narrowly explanate sides of the pronotum, in the

less coarse and closer sculpture of the elytra, straight and not arcu-

ate sides of the prothorax toward base, in the shorter antennae, and

in the distinctly exposed humeri ; in color, rugosity of the pronotum

and several other features there is also notable divergence.

Coleoplerological Notices, V. 419

DELIPHRUM Erichs.

The two following species are referred to Deliphrum, although

in some characters they appear to be intermediate between that

genus and Lathrimteura. In sequicolle the intermediate tibiae only

are sparsely spinulose, the others coarsely setose, or with spines

only very slightly thicker than the ordinary seta3 ; in occiduum the

spinules of the hind tibiae are but slightly more visible. A few very

short spines are also visible along the intermediate tibiae of Lathri-

mseum spretum. In the general facies and fine even punctures of

the pronotum both of these species agree very satisfactorily with

Deliphrum tectum Payk. ; they are very much smaller than D. ex-

p)ansum Lee. from Colorado.

The antennal differences given by LeConte and Horn (Class. Col.

N. A.) to distinguish Lathrimseum and Deliphrum do not exist,

these organs being equally incrassate in both ; they are however

longer and much more nearly filiform in Olophrum. In Lath, sub-

costatum the tibiae are not spinose, but evenly covered with short

stiff inclined setae.

D. sequicolle n. sp. — Broad, polished, glabrous, dark piceous-browii,

the head and abdomen blackish ; antennae black, slightly pale at base ; legs,

sterna and epipleurse paler, flavescent. Head transverse, three-fifths as wide

as the prothorax, very finely, remotely pnnctate, smooth ; ocelli large, promi-

nent, distant by two-fifths the width ; dorsal constriction of the neck obso-

lete ; surface feebly impressed before each ocellus and at the sides of the

clypeus ; lateral margins of the latter deeply interrupted as usual before the

eyes for the reflexion of the antennae ; eyes moderate ; antennae two-fifths as

long as the body, slender toward base but rapidly though gradually, strongly

incrassate near the apex, sixth joint one-third longer than wide, eighth and

tenth similar in form, slightly wider than long, the tenth very much the

larger. Prothorax not quite twice as wide as long, the sides parallel, evenly,

moderately rounded ; basal angles obtuse and blunt ; disk minutely, not very

densely, evenly punctate, the punctures rather closer and stronger near the

base, the surface narrowly explanate along the sides, not at all impressed in

the middle, the sublateral fovese before the middle very feeble. Elytra sub-

quadrate, nearly parallel, truncate at apex, not as long as wide, not more than

twice as long as the prothorax ; sides nearly straight ; humeri not exposed at

base ; disk coarsely deeply confusedly and not very densely punctate, the

punctures having only the most indistinct lineate arrangement, altogether

confused and denser near the suture. Abdomen with more than three exposed

segments, subimpunctate, polished. Length 2.0 mm. ; width 1.1 mm.

420 Coleopterological Notices, V.

California (Lake Tahoe).

I took a single male only of this species, which is very distinct

by reason of its short and coarsely, subserially sculptured elytra.

D. OCCidlllim n. sp. — Oblong, convex, polislied, glabrous, black, the

elytra with the feeblest piceo-metallic tinge ; legs piceous-black, the tibije

and tarsi rufescent ; antennse black throughout. Head two-thirds as wide as

the prothorax, nearly as in cequicoUe, minutely, sparsely punctate ; antennse

slender, slightly longer than the head and prothorax, very evenly, feebly

incrassate throughout from near the base, joints one to seven more or less

longer than wide, eight to ten shorter, similar in form, scarcely as long as

wide, increasing in size. Prothorax about twice as wide as long, the sides

parallel, feebly and evenly arcuate ; base and apex subequal ; basal angles

obtuse and narrowly rounded ; disk evenly, transversely convex, not im-

pressed, very narrowly explanate along the side margins, finely, rather

strongly and somewhat closely punctate ; sublateral fove?e before the middle

very feeble. Elytra toward apex nearly one-third wider than the prothorax,

two and one-half times as long as the latter, fully as long as wide, truncate

at apex, the sides feebly divergent, nearly straight ; humeri not exposed at

base, obliquely rounded to the prothorax, rather coarsely strongly and closely

punctured, with a broad deep impression along each side of the elevated

suture, the punctures almost evenly distributed, with very feeble subserial

arrangement. Abdomen with nearly three exposed segments, polislied, sub-

impunctate. Length 2.2 mm. ; width 1.2 mm.

California (Siskiyou Co.).

Allied to sequicoUe but differing altogether in the form of the

antennae, which are here much more slender and very feebly gradu-

ally and evenly incrassate throughout, also in its rather more trans-

verse prothorax and in the larger, more densely punctate elytra. It

is represented in my cabinet by a single female.

OMALUJm Grav.

In this difficult genus the European species have been divided

into several subgenera which appear to be amply valid, at least as

such, there being notable differences in the structure of the maxil-

lary palpi. The following species are to be added to those already

known from North America: —

O. ater n. sp. — Narrow, convex, highly polished, intense black, the legs

toward tip and antennse toward base rufescent ; very narrow side margins of

the pronotum also feebly rufescent from diaphaneity ; pubescence excessively

short, remote and scarcely visible. Head barely more than two-thirds as wide

as the prothorax, wider than long, flat throughout above, finely, very remotely

Coleopterological Notices, V. 421

and unevenly punctate ; front broadly, strongly rounded ; eyes large, at the

base ; tempora nearly obsolete ; nuchal constriction immediately behind the

ejes, extending transversely across the head ; ocelli large, separated by two-

fifths the total width, on the edge of the nuchal depression ; third joint of the

maxillary palpi small, not longer than wide, fourth fusiform, pointed toward

apex, in the middle wider than the third, about three times as long ; antennae

stout, not quite as long as the head and prothorax, basal joint cylindrical,

twice as long as wide and as long as the next two, the latter equal in length,

third narrow, obconical, nearly twice as long as wide, six to eleven gradually

strongly incrassate and more densely pubescent, forming a six-jointed club,

seven to ten strongly transverse ; minute impressions before the ocelli scarcely

distinct. Prothorax nearly one-half wider than long ; sides parallel and broadly,

evenly arcuate ; base truncate, scarcely wider than the feebly arcuate apex ;

disk transversely convex, nearly even but with two obsoletely flattened median

areas ; punctures fine, deep, very sparse and rather unevenly distributed.

Elytra but very slightly wider than the prothorax and twice as long, about as

long as wide ; sides straight, scarcely divergent ; punctures somewhat coarse,

deep, not very dense, forming indistinct longitudinal rugulations. Abdomen

shining, minutely, sparsely punctate, as long and wide as the elytra ; border

moderate. Legs short and rather stout ; tibiae strongly spinulose externally

and with an internal row of slender bristles which are very short on the

anterior ; hind tarsi nearly four-fifths as long as the tibiae, the last joint barely

as long as the four preceding together, the fourth distinctly shorter than tVie

third ; anterior feebly dilated in the male. Length 2.9 mm. ; width 1.0 mm.

California (Sta. Cruz Co.).

Related to Jior ale (= rufipes Fourc.) but much smaller, with the

elytral punctures much coarser and not joined by anastomosing im-

pressed lines as they are in that species.

O. paciflcum n. sp. — Narrow, moderately convex, feebly narrowed ante-

riorly, intense black throughout; legs and base of the antennae rufescent ; pubes-

cence in the form of minute but distinct erect stiff setae. Head three-fourths

as wide as the prothorax, in form as well as structure of the palpi and antennae

nearly as in ater, the basal joint of the latter however not as long as the next

two and the second longer as well as thicker than the third, outer joints

strongly incrassate and transverse. Prothorax three-fifths wider than long ;

sides nearly parallel, broadly, evenly arcuate ; base transversely truncate,

very slightly wider than the apex ; disk evenly, transversely convex, with

scarcely any trace whatever of central flattening, finely strongly and densely

punctate. Elytra toward apex slightly wider than the prothorax, nearly two

and one-half times as long as the latter ; sides straight, just visibly divergent ;

disk finely, deeply, extremely densely punctate, the sculpture feebly rugulose,

longitudinally substriate near the middle. Abdomen fully as wide as the elytra

and rather shorter. Legs short and stout, the tibite spinulose externally.

Length 2.3 mm. ; width 0.75 mm.

422 Coleopterological Notices, V.

California (Siskiyou Co.).

This species is allied to ater and megarthroides, differing greatly

from the former in its still smaller size, narrower form, more dis-

tinct setie and much finer, denser sculpture, and from the latter in

coloration and in its more parallel and less anteriorly attenuate

form. In pacificuin, ater and probably generally throughout the

genus, there is a transverse row of longer erect setae near the

middle of each abdominal segment and the minute erect setae of

the elytral punctures are replaced at wide intervals by longer setae ;

the small and ordinary elytral setae in ater are very much more

minute than in pacificuin and can scarcely be discerned under com-

paratively high power. The type appears to be a female.

Oi megarthroides I have many examples of all degrees of color

and immaturity. The measurements given by Fauvel seem to be

a little too great, my series of thirty-one specimens, taken in nume-

rous localities from Los Angeles to Yictoria, give as extremes of

length 1.75-2.6 mm. ; megarthroides appears to be extremely

closely allied to humile Makl.

O. lacustre n. sp. — Narrow, elongate, subparallel, feebly convex, pol-

ished, rufo-testaceous throughout, the head and abdomen, especially toward

apex, rather darker and more plceous ; pubescence consisting of extremely

minute suberect scarcely visible setse, denser and much longer on the aluta-

ceous under surface of the abdomen. Head distinctly but not greatly nar-

rower than the prothorax, wider than long, triangular, with the epistoma

truncate and one-half as wide as the base ; eyes moderate, at one-half their

length from the base ; the tempera parallel, nearly sti-aight and almost as

prominent a^the eye; base truncate, the constriction extending transversely

and deeply across the dorsal surface ; ocelli separated by two-fifths the entire

width, on the edge of the constriction ; occiput not impressed before them ;

surface finely, rather closely but unevenly punctate, very feebly biimpressed

between the antennje, the latter pale, yery short, one-third longer than the

width of the head, subcylindrical, scarcely visibly incrassate, outer joints

transverse ; last joint of the maxillary palpi subbulbose toward base, gradu-

ally finely attenuate and feebly arcuate thence to the apex, nearly three times

as long as the third but scarcely as thick. Prothorax one-half wider than

long, widest before the middle ; sides broadly rounded, becoming rather more

convergent and straighter toward base; disk finely, rather closely punctate,

without anastomosing impressed lines, with two elongate subobsolete median

impressions and another scarcely visible between them near the apex. Elytra

but just visibly wider than the prothorax, quadrate, as long as the head

and prothorax, scarcely as long as wide, finely, very densely punctate and

obsoletely, longitudinally substriolate. Abdomen a little narrower and rather

longer than the elyti-a, subparallel ; border rather wide. Legs short ; poste-

ColeopterologicaV Notices, V. 42

rior tarsi slender, very nearly as long as the tibife ; fourth joint shorter than

tlie third, first three somewhat elongate, first four together much longer than

the fifth. Length 2.75 mm. ; width 0.75 mm.

Michigan.

The single specimen is a male and has the anterior tarsi very

feebly dilated ; the sixth ventral is broadly, feebly arcuate at apex.

This species closely resembles longidum, but differs in its much

shorter and more densely punctate elytra, smaller and less incras-

sate antennae, in the absence of anastomosing fine lines on the

shorter pronotum, and, radically, in the structure of the posterior

tarsi, which in longulum have the first four joints short, thick,

oblique, equal and together rather shorter than the fifth.

O. capito n. sp. — Elongate, parallel, feebly convex, polished, black ;

antenna}, legs and elytra paler, castaneous ; pronotum piceous-black ; setae

extremely minute, sparse and scarcely discoverable, on the abdomen longer

and distinct but sparse above and beneath, the venter shining. Head large,

not as long as wide, much longer and only slightly narrower than the protho-

rax, finely, sparsely punctate, scarcely percej^tibly biiuipressed between the

antennse ; eyes feebly convex; tempora subparallel, straight, nearly as long

and prominent as the eye ; base transverse and strongly constricted, the ocelli

on the edge of the constriction, very feeble, separated by barely one-third of

the width ; antennae stout, feebly incrassate, as long as the head and protlio-

rax, third joint rather longer than wide, constricted and strongly compressed

toward base. Prothorax two-thirds wider than long, widest before the middle ;

sides feebly convergent and just perceptibly sinuate toward base ; disk scarcely

visibly flattened in the position of the usual impressions, evenly convex, finely,

sparsely punctate. Elijtra about as long as wide, a little longer than the head

and prothorax, very slightly wider than the latter, strongly, broadly impressed

along the elevated suture, finely, very sparsely punctate, the punctures feebly

lineate in arrangement toward the middle of each. Abdomen a little narrower

and rather shorter than the elytra, minutely sparsely and indistinctly punc-

tate, shining, just visibly alutaceous. Legs short; posterior tarsi very long

and slender, as long as the tibiae, the first three joints elongate, oblique at

apex, second nearly twice as long as the first, two to four decreasing rapidly

in length, first four together much longer than the fifth. Length 3.0 mm. ;

width 0.9 mm.

Wisconsin.

Allied to lacvsfre, having nearly the same peculiar structure of

the tarsi and also similar in the form of the body and oral organs.

It differs notably in the larger head, longer, stouter antennas with

compressed third joint, more approximate ocelli, longer tempora,

longer elytra and much sparser punctuation throughout. The

single specimen is a male, having the sixth ventral feebly arcuate

424 Goleopterological Notices, V.

at apex and the anterior tarsi feebly dilated and denselj^ pubescent

beneath. If the usual definition of the genus is to hold, these two

species will have to be separated because of the marked tarsal dif-

ferences.

The following species have the body slender, parallel, subimpunc-

tate and opaque or alutaceous, with the fourth joint of the maxil-

lary palpi slender, cylindrical, much narrower than the third and

somewhat more or less than twice as long; they constitute the

subgenus Phloeonomus of Heer: —

Fourth palpal joint shorter, one-half longer than the third. Arctic.

lapponiciiiu

Fourth palpal joint twice as long as the third or very slightly longer.

Posterior tarsi distinctly more than one-half as long as the tibiae.

Surface opaque, strongly granulato-reticulate ; prothorax very nearly as

wide as the elytra. European subarctic pusillum

Surface much more shining, alutaceous, more coarsely and feebly reticu-

late ; prothorax much narrower than the elytra ; setsB of tl)e latter

longer and more visible. American subarctic laBSicolle

Posterior tarsi not more than one-half as long as the tibiae ; legs longer ;

body much broader, feebly shining, alutaceous. American subarctic.

suffusiim

Pusillum is simply included for comparison ; it is closely allied

to Isesicolle but is distinct and does not appear to inhabit North

America.

O. Slllfusuni n. sp. — Suboblong, depressed, feebly shining, black, the

legs and elytra rufous, the latter suflfnsed with black near the scutellum and

each external apical angle ; antennae fuscous, pale in basal half; integuments

subglabrous ; elytral setae minute, erect, distinct under a power of 80. Uead

small, wider than long, three-fourths as wide as the prothorax; eyes large,

convex ; tempora feebly arcuate, short, strongly convergent to the nuchal

constriction ; ocelli distinct, on the edge of tlie constriction, separated by

scarcely more than one-fourth of the total width ; surface impressed before

each, also broadly, strongly impressed at each side of the large rounded

clypeus ; antennae a little longer than the head and prothorax, outer six joints

abruptly stouter, six to ten strongly transverse. Prothorax four-fifths wider

than long ; sides subparallel, feebly arcuate, slightly convergent and scarcely

sinuate toward base ; disk subimpunctate, explaiiate at the sides, more broadly

toward base, also with two broad strong median impressions extending but

slightly beyond the middle and a very feeble median impression at the apex.

Elytra quadrate, one-fourlh wider tlian the prothorax and twice as long, nearly

as long as wide, much longer than the head and prothorax ; humeri extremely

narrowly exposed ; sides parallel ; disk very sparsely and obsoletely punc-

tate. Abdomen as wide as the elytra and rather shorter, somewhat strongly

Coleopterological Notices, V. 425

shining, feebly pubescent ; border moderate. Legs slender, rather short ;

four basal joints of the hind tarsi together barely three-fourths as long as the

last. Length 2 0 mm. ; width 0.7 mm.

Alaska (Hunter's Bay, Prince of Wales Island). Mr. Wickham.

Much broader and rather more convex than IsesicoUe, to which it

is allied. In Isesicolle the fifth abdominal tergite is nearly two and

one-half times as wide as long, while in the present it is scarcely

more than twice.

O. qiiadripeiine n. sp. — Oblong, feebly convex, black with a feeble

piceous tinge except on the abdomen ; legs rufous ; antennje fuscous, paler

toward base ; integuments polished, subglabrous, the abdomen finely, strongly

reticulate and alutaceous. Head strongly, closely punctate, wider than long,

fully two-thirds as wide as the prothorax ; neck narrow, one-half the total

width ; eyes moderate, near tlie base ; ocelli separated by scarcely more than

one-fourth the total width ; surface with a deep puncture before and exterior

to each ocellus, also broadly impressed at each side of the large and broadly

rounded clypeus ; antennje as long as the head and prothorax, gradually and

moderately incrassate ; fourth palpal joint as wide as the third and about

three times as long, very feebly narrowed, the tip obtuse. Prothorax strongly

transverse, four-filths wider than long ; sides broadly, evenly rounded, feebly

convergent and nearly straight toward base, the basal angles obtuse ; disk

transversely convex, feebly explanate near the hind angles, with three dis-

tinct median impressions, the intermediate near the apex. Elytra parallel,

quadrate, slightly wider than the prothorax and barely twice as long, very

little longer than the head and prothorax, not quite as long as wide, strongly,

very densely' pimctate and obsoletely, longitudinally rugulose. Abdomen as-

wide as the elytra and a little shorter ; segments very short ; border ample.

Legs short, slender ; four basal joints of the hind tarsi together scarcely more-

than two-thirds as long as the fifth. Length 1.8 mm. ; width 0.7 mm.

Virginia (Fredericksburg).

Allied rather closely to forominosum, but abundantly distinct ini

its broader form, larger protborax, shorter elytra, much denser

punctuation, shorter, broader abdominal segments and many other-

characters; from cribr-um it may be known at once by the rounded

sides of the prothorax.

In this and many other species there is a deep wide and oblique

antennal groove on the upper surface of the head near the eye, the

inner margin of which is frequently cariniform. It seemed at first

as though this might serve to define the genus Omalium better than

the variable posterior tarsi, but I find that it disappears in some

species such as lapponicuvi and laesicoUe, and moreover exists iu.

some other genera such as Lathrimaeum.

Amnals N. Y. Acad. Sci., VII, Nov. 1893.— 28

426 Coleopterological Notices, V.

0. rtigipenne Csy. is a very aberrant form in its small short ely.

tra and large rounded abdomen, but belongs to the genus by all of

its structural characters. 0. algarnm Csy. (^^fucicola \\ Csy.) is

closely allied to theveneti Fvl., but differs in its much larger size

and relatively shorter antennae. Of exsculptum Makl. I took a

single specimen in Humboldt Co. California; the sculpture of the

pronotum reminds us somewhat of Lathrimaeum, but it is a true

Omalium.

ANTHOBIUM Steph.

The species of Anthobium are really very numerous in America,

especially in the regions near the Pacific Ocean, but had not been

collected to any extent at the time Mr. Fauvel wrote upon them

(Not. Ent., 7, 1818). During a four or five days collecting trip to

Lake Tahoe in June 1886, I took four species in an area notexceed-

iing several hundred yards in extent bordering this pretty little

■mountain sea. Omalini of several genera are especially abundant

-in those regions, which will yield many more interesting forms

-when the numerous secluded valleys can be carefully explored.

At the present time I have selected a number of the more distinct

and interesting new species for description ; these may be identified

among themselves as follows : —

Elytra with tiie outer angle at apex moderately broadly rounded, the apex

subtruncate.

Head black.

Entire upper surface intense black nigerrimilin

Upper surface black, the pronotum and elytra dark piceous ; sutural

angles not prolonged in the female ; prothorax in the male much

larger than in the female....' divei'SiCOlle

Black, the pronotum slightly paler especially toward base ; elytra pale

fiavate gilvipeiine

iHead testaceous.

Pronotum with a feeble subobsolete median impressed line, at least in the

male.

Elytra transversely truncate or evenly arcuate at apex, in the female

not in the least modified at the sutural angle ; pronotum polished,

very coarsely, deeply punctate piinctatum

■Elytra with the sutural angles abruptly and strongly produced in the

female ; prothorax in the male much more elongate than in the

female tibiale

Pronotum without vestige of an impressed median line.

Sides of the prothorax broadly subangulate at basal third ; large stout

species, strongly punctate SUlianglllatuill

Coleopterological Notices, V. 427

Sides of the prothoi-ax very evenly rounded ; small species.

atriventre

Elytra with the outer angle very broadly rounded, the apex conjointly semi-

circular in the male or gradually acutely pointed in the female ; prothorax

relatively smaller fraterniim

As several species, such as fi^nelariiim, segmentarmm and mar-

ginatum are unknown to me, and rugulosum doubtfully determined,

I am not able at present to give a complete statement of our species ;

sorbi is somewhat doubtful as an American species.

A. nigerrimilin. — Elongate, parallel, polished, the pronotum and

abdomen reticulate and alutaceous, the abdomen finely, sparsely pubescent ;

legs and antennae pale rufo-testaceous, the latter iufumate near the tip. Head

transverse, two-thirds as wide as the prothorax, very finely, sparsely punctate,

feebly and longitudinally impressed near the sides ; eyes large and prominent ;

ocelli small, separated by less than one-third the width ; antennae short,

scarcely as long as the head and prothorax, outer joints gradually rather

strongly incrassate, sixth longer than wide, seven to ten similar in form and

a little wider than long. Prothorax three-fourths wider than long, the sides

evenly and continuously arcuate, feebly divergent to beyond the middle, then

very broadly rounded and strongly convergent to the apex which is scarcely

three-fourths as wide as the base ; disk evenly, transversely cenvex, very

feebly subexplanate at the sides just behind the middle, without trace of

median impressed line, the punctures fine but strong and distinct, rather

sparse. Elytra a little longer than wide, more than twice as long as the

prothorax and scarcely visibly wider, the sides straight and subparallel ;

apex broadly feebly and very evenly arcuate ; disk unusually coarsely deeply

confusedly and rather closely punctate. Abdomen as wide as the elytra, with

four exposed segments. Length 2.2 mm. ; width 0.9 mm.

Southern California. Mr. H. C. Fall.

The single male in my cabinet is related to californicum but

differs in its intensely black and more coarsely sculptured elytra.

The anterior tibise are simple and the median elevated plate of the

sixth ventral segment is very large, transverse, twice as wide as

long, extending to the apex and with its apex transversely truncate

and its sides parallel.

The nuchal constriction throughout Anthobium is completely

obsolete on the dorsal surface, and by this character the species

can be distinguished from all the forms of Omalium which I have

seen, although the constriction becomes very feeble in several

species of the latter genus, such as hamatum and megarthroides,

these also approaching Anthobium in general habitus as well.

428 Coleopterological Notices, V.

A. diversicolle. — Subparallel, convex, subalutaceous, the elytra pol-

ished, black, the proiiotum and elytra piceous-black ; legs and anteunse pale

flavate, the latttr toward apex and the posterior femora toward base dusky.

Head two-thirds as wide as the prothorax, broadly, longitudinally biimpressed,

minutely, sparsely punctate ; ocelli small, separated by more than one-third

of the width ; eyes rather small ; antennae much shorter than the head and

prothorax, strongly incrassate toward apex. ProtJiorax large, rectangular,

one-third wider than the length ; sides parallel, broadly, feebly and evenly

arcuate ; apex broadly, very feebly arcuate, but slightly narrower than the

base ; disk strongly convex, even, impressed at the sides behind the middle,

very minutely feebly and rather sparsely punctate. Elytra about as long as

veide, just visibly wider than the prothorax and distinctly less than twice

as long ; humeri not exposed ; sides straight and subparallel ; apex broadly,

evenly, feebly arcuate ; disk not very coarsely but strongly, rather sparsely,

confusedly and subrugosely punctate. Abdomen with more than three exposed

segments. Length 1.7-2.3 mm. ; width 0.8-0.95 mm.

California (Lake Tahoe) ; Nevada (Reno); Utah (southern).

A verv abundant species, remarkable because of the great sexual

disparity in the form of the prothorax. The description is drawn

from the male which has the sixth ventral strongly, transversely

convex but scarcely visibly elevated or thicker in the middle, and

the anterior tibiae prominent within at the middle and thence nearly

parallel to the apex and gradually strongly narrowed to the base.

The female has the prothorax nearly twice as wide as long and

more shining, the elytra broadly arcuate at apex and transversely

impressed before the tip of each, the sutural angles not visibly

modified. In califormcum, of which I have a large series from

Lake Co., corresponding protboracic differences are observable but

not so marked. The present species is allied to lihiale, but difi'ers

in its smaller size, in coloration and in its much sparser punctuation.

A. gilTipenne. — Narrow, parallel, convex, black, the pronotnm piceous,

sometimes decidedly paler at base; elytra and legs flavate; antennae pale,

dusky in outer half; surface strongly shining, the pronotum not distinctly

alutaceous. Head transverse, large, five-sixths as wide as the prothorax,

rather strongly, longitudinally biimpressed, minutely, sparsely punctate ; eyes

large and prominent ; ocelli separated by more than one-fourth of the width ;

antennae rather feebly incrassate in apical half, about as long as the head and

prothorax, the sixth joint quadrate, seventh similar but a little larger, eighth

slightly wider than long, the tenth distinctly transverse. Prothorax trans-

versely rectangular, two-fifths wider than long ; sides parallel, nearly straight,

convergent and rounded in apical third ; base slightly wider than the apex ;

basal angles slightly blunt ; disk transversely, strongly convex, with feeble

traces of an impressed median line, feebly impressed laterally behind the

Coleopterological Notices, V. 429

middle and obsoletely in the middle before the base; punctures fine, feeble

and sparse. Elytra one-fourth longer than wide, the sides subparallel and

nearly straight ; apex transverse ; humeri not exposed ; disk scarcely visibly

wider than the pronotum but nearly two and one-half times as long, coarsely

strongly confusedly and not very densely punctate. Abdomen with nearly

four exposed segments, shining, subimpunctate and not distinctly pubescent.

Length 1.7-1.9 mm. ; width 0.7-0.8 mm.

California (Sta. Cruz Co.).

The two specimens are males, having the median elevated plate

of the terminal ventral segment large, trapezoidal in form, twice

as wide as long with the apex transversely truncate ; anterior tibiae

simple. In the female the pronotum will probably prove to be

distinctly shorter, as in californicum, tibiale and diversicolle.

A. piinctatum. — Rather broad and cuneiform, pale rufo-testaceous,

the elytra more flavate, the abdomen sometimes feebly clouded with darker ;

integuments glabrous and very highly polished, the pronotum without trace

of reticulation or alutaceous lustre. Head four-fifths as wide as the protho-

rax, the eyes very prominent ; surface obsoletely, longitudinally biimpressed,

rather coarsely sparsely and unevenly punctate ; ocelli large and separated

by fully one-third of the width ; antennae as long as the head and prothorax,

outer six joints gradually thicker, tenth one-third wider than long and twice

as wide as the third. Prothorax three-fourths wider than long; sides sub-

parallel, feebly arcuate, a little more convergent anteriorly ; base distinctly

wider than the apex ; disk highly polished, very coarsely deeply and some-

what closely punctate, feebly impressed near the sides behind the middle and

obsoletely and unevenly along the median line. Elytra about as long as wide,

at the obliquely rounded and scarcely exposed humeri barely wider than the

prothorax but one-half wider near the apex, two and one-half times as long ;

sides divergent and nearly straight ; apex broadly, evenly rounded through-

out the width ; disk broadly impressed along the suture; punctures coarse,

deep, confused and rather close. Abdomen with three or four exposed segments,

shining, flat, scarcely perceptibly and remotely punctulate. Length 2.0-2.5

mm.; width 1.1-1.2 mm.

California (Sta. Cruz Co.).

This Rpecies is allied in general form and more distant ocelli to

pothos, but differs much in its more convex and polished, less trans-

verse and very coarsely punctate pronotum. It is represented by

four females.

A. ti1>iale« — Subparallel, rather convex, shining, subglabrous, pale rufo-

testaceous, the antennae dusky toward tip ; elytra more flavate, the abdomen

piceous-black ; head and pronotum alutaceous. Head three-fourths as wide

as the prothorax ; eyes moderately prominent; ocelli distant by one-third the

width ; surface perfectly flat and unimpressed, minutely, rather closely punc-

430 Goleopterological Notices, V.

tate ; antennae much shorter than the head and prothorax, moderately in-

crassate. Prothorax large, subrectangalar, one-third wider than long ; sides

subparallel, very feebly arcuate, a little more convergent anteriorly ; base

distinctly wider than the apex ; basal angles slightly obtuse and blunt ; disk

strongly, evenly convex, minutely but strongly, evenly, rather sparsely

punctate, very feebly impressed near the sides behind the middle and also

extremely obsoletely and narrowly along the median line. EUjtra rather

longer than wide, twice as long as the prothorax, and, near the apex, almost

one-third wider ; sides feebly divergent, nearly straight ; humeri not exposed ;

apex broadly, evenly arcuate throughout the width ; disk rather finely but

strongly, confusedly and closely punctate. Abdomen with about four exposed

segments. Length 1.8-2.1 mm.; width 1.0-1.1 mm.

Arizona.

The description is taken from the male, in which sex the sixth

ventral is abruptly thickened and transversely more convex in the

middle, with the very short apex of the segment beyond thinned

and transparent, and the apical margin of the thickened part bearing

long stiff setas ; the anterior tibiae are widest and obtusely prominent

within at the middle, thence rapidly narrowed to the base and

broadly sinuate to the apex. The female is quite different, the

prothorax being very much shorter and more transverse as in

diversicolle, and the elytra larger, fully three times as long as the

prothorax, covering the entire abdomen, with the sutural angles

very strongly and abruptly prolonged behind. Six specimens.

A. Sllliailglllatllin. — Robust, subparallel, convex, rufo-testaceous and

polished throughout, the abdomen black. Head large, four-fifths as wide as

the prothorax, nearly as long as wide, scarcely at all impressed, finely but

strongly, rather closely punctate; ocelli all but completely obsolete; eyes

smaller than usual, the terapora distinct behind them ; antennae longer than

usual, longer than the head and prothorax, sixth joint longer than wide, not

wider than the preceding, seven to elevbn forming a long loose five-jointed

club, tenth but slightly wider than long. Prothorax transverse, fully four-

fifths wider than long; apex truncate, fully as wide as the base; sides very

broadly subangulate just behind the middle, thence feebly convergent and

nearly straight to the distinct but rounded apical angles, more convergent and

somewhat sinuate to the base, the basal angles obtuse and blunt; disk rather

coarsely deeply and closely punctate, just visibly impressed before the scutel-

lum and strongly so along the sides behind the middle. Elytra about as long

as wide, near the apex slightly wider than the prothorax, more than twice as

long ; sides just visibly divergent, nearly straight ; humeri slightly exposed ;

apex broadly, evenly subtruncate ; punctures distinct, deep, subequal to those

of the pronotnm and rather less approximate, confused. Abdomen with about

three exposed segments. Length 2.3-3.0 mm. ; width 1.0-1.25 mm.

Coleopterological Notices, V. 431

California (Lake Tahoe).

Described from the male, which has the sixth ventral broadly,

feebly sinuate throughout at apex, with the surface not modified,

the median segment of the seventh acutely parabolic, as long as

wide, polished, with a few erect setae ; anterior tibite not modified,

the tarsi distinctly dilated The female is almost perfectly similar

in general structure to the male, but has the head a little smaller

and the sides of the elytra a trifle more divergent.

This is an interesting aberrant type of the genus, having longer

antennae, and differing also in male sexual characters and in tarsal

structure; the first four joints of the stout posterior tarsi are to-

gether much longer than the last, with the second joint nearly

twice as long as the first and as long as the next two together.

The subobsolete ocelli makes the transition to the complete absence

of them in Vellica, a comparatively easy one and also detracts

somewhat from the importance of that character.

A. atriTentre. — Subparallel, convex, sliiniiig, the pronotum but very

feebly reticulate and alutaceous, pale rufo-testaceous, the abdomen black ;

anteniiffi darker at apex. Head fully three-fourths as wide as the prothorax,

tiat, minutely, sparsely punctate, very obsoletely biimpressed between tlie

eyes and between the antennae ; ocelli large, diffuse, separated by fully one-

third the width ; eyes large, prominent ; antennse scarcely as long as the head

and prothorax, moderately incrassate, the last five joints gradually larger.

Prothorax transverse, fully three-fourths wider than long ; sides broadly,

evenly arcuate, much more convergent in apical half, the base truncate and

nearly one-half wider than the apex ; basal angles obtuse but not appreciably

blunt ; disk strongly, transversely convex, even, minutely but distinctly,

sparsely punctate. Elytra distinctly longer than wide, more than twice as

long as the prothorax, and, near the apex, one-third wider ; sides feebly

divergent, nearly straight ; humeri slightly exposed at base ; apex broadly,

feebly arcuate, with a small notch at the suture ; punctures strong confused

and rather dense. Abdomen half exposed behind the elytra. Length 1.7 mm. ;

width 0.75 mm.

California (Los Angeles).

This species is allied to gilvipenne, resembing it in general form,

but differs in its shorter, more transverse prothorax, which is much

more narrowed toward apex, in its larger, more distant ocelli, and

in coloration and size. The single male has the sixth ventral thin

and transparent, broadly lobed in the middle, the surface before the

lobe abruptly elevated, flat, transverseh'^ trapezoidal, with the apex

of the thickened part not quite attaining the apex of the segment

432 Coleopterological Notices, V.

and broadly sinuate in the middle, not truncate as in gilvipenne ;

anterior tibiae simple.

A. f raterniim. — Broad, cuneiform, convex, pale rufo- testaceous through-

out, alutaceous, the elytra polished. Head three-fourths as wide as the pro-

thorax, the surface perfectly flat, minutely, sparsely punctulate ; eyes large ;

ocelli large, separated by one-third the width, each immediately beliind a

small deep impressed fovea ; antennje as long as the head and prothorax,

gradually and rather strongly incrassate from the middle. Prothorax trans-

verse, not quite twice as wide as long ; sides feebly rounded, slightly conver-

gent in basal and strongly so in apical half; apical angles obtuse but visible;

base two-fifths wider than the transversely truncate apex ; disk evenly con-

vex, broadly, feebly impressed at the sides behind the middle, very widely so

toward base ; punctures very minute but rather close. Eljtra large, longer

than wide, transversely convex, one-half wider than the prothorax and nearly

three times as long, semi-circularly rounded behind, covering all but the acute

tip of the abdomen, finely but strongly, distinctly confusedly and not very

densely punctate. Length 2.2-2.6 mm. ; width 1.1-1.25 mm.

California (Hoopa Valley, Humboldt Co.).

The male, from which the above outline is drawn, has the tibiae

simple and straight, the posterior tarsi long, stout, with the second

joint notably longer than the first and almost as long as the next

two — nearly as in subanguJatum — the first four together much

longer than the fifth, the fifth ventral broad, transverse at apex,

with a deep abrupt parallel-sided median fissure nearly four times

as deep as wide, the sixth short, broadly sinuate throughout, and

the median ligula of the seventh large, longer than wide, convex

and acutely triangular. The female is similar but larger, the elytra

more oval, more than three times as long as the prothorax, covering

the entire abdomen, slightly dehiscent at apex, and arcuately nar-

rowed and conjointly acutely ogival from posterior third.

This species with the eastern convexum and the Californian

auTifiuum of Fauvel, constitutes a peculiar group of the genus,

differing in the nature of the male sexual characters, in the larger

oval and more convex elytra, and in tarsal structure.

Aiirifiuum, of which I took a large series at Lake Tahoe, is

a small species, 1.5-2.0 mm. in length, having the anterior and

middle tibias flattened within and strongly arcuate throughout the

length, the posterior tarsi shorter and more nearly normal, the fifth

ventral unmodified and the sixth longer, narrower, trapezoidal,

with the apex narrowly truncate. In the female the elytra pro-

Coleopterological Notices, V. 433

ject far beyond the abdomen, are dehiscent in apical fourth, and

obliquely narrowed from just behind the middle.

In the male of convexum the fifth segment is transverse and

unmodified, the sixth very short, transverse at apex, with a small

feeble median sinuation, the posterior tarsi somewhat as in fra-

ternum. The elytra in the female are nearly as \n f rater num but

have the sides more parallel.

PSELAPHIDiE.

On recently arranging my long-neglected material in this remark-

able family, I found so much to correct and explain in my earlier

work and, incidentally, so many undescribed and interesting spe-

cies, which had been gradually acccumulating, that it seemed to

me a few notes might not be unacceptable to general students of

the famil3\ In the arrangement of the tribes I have followed the

order proposed by Mr. A. Ralfray, in his valuable revision published

a few years since in the " Revue d'Entomologie."

The mode of antennal insertion in this family does not seem to

have been dwelt upon thus far in systematic works. The first joint

is attached to the under part of the sides of the front by the upper

part of its base, the basal parts being, as it were, turned upward to

the point of attachment. This structure, which is of course not

essentially different from that seen elsewhere in the Coleoptera ex-

cept in degree, is best displayed in such genera as Pselaphus and

Tychus ; but at the same time it is a constant peculiarity of the

family ; it restricts the motion of the antennae almost to a hori-

zontal plane.

Faronini.

The general form of the body in this tribe resembles that of the

Euplectini, but many features, and especially the tarsus of Faronus

and its immediately i-elated genera, show that it is also very closely

allied to certain Staphylinidae. The tarsus of Faronus is exactly

similar in structure to that of many Oxytelini, and the transverse

pubescent line of the first visible dorsal segment, a very important

and characteristic modification in the true Faronini, is frequently

seen in the Omalini. The tribe is thus truly intermediate between

the Staphylinidae and Pselaphidae, but these remarks apply fully

only to the small group having staphylinide tarsi referred to above.

434 Coleopterological Notices, V.

The second section of Raffray, having the tarsi normally pselaphi-

dous in structure, should constitute a distinct tribe, intermediate

between the Faronini and Euplectini, for, in the present family, a

difference in tarsal structure such as this, is of far greater impor-

tance than any possible modification of the ungues.

At the same time, an extraordinary character, hitherto escaping

record as far as I can discover, shows that the tribe Faronini, in

its limited sense, is in reality very isolated. The sexual modifica-

tions at the apex of the venter are bilaterally asymmetric. Whether

or not this occurs in Faronus I am unable to state at present, but

it is a common condition in both of our genera, and is confirmed by

large series of several species in my cabinet.

The genera of this tribe thus far known are as follows, those not

occurring within the limits of the Unites States being distinguished

by an asterisk : —

Tempora obsolete, the eyes very large, extending to the base.

^Faioiiidius

Tempera large and long behind the eyes, the latter smaller.

Tempora angulate ; intermediate coxae not separated by a mesosternal pro-

cess ; metasternum short *FaroniIS

Tempora not angulate ; intermediate coxae separated by a narrow meso-

sternal lamina.

Metasternum and elytra rather short (types of genus misella and parva

Shp.) ; front narrowed, tlie antennal prominences approximate, sepa-

rated by a longitudinal sulcus which is expanded behind the frontal

margin ^Sagola

Metasternum long, in a longitudinal line through the acetabula about

twice as long as the intermediate coxae ; front wide, not tuberculiform,

the antennal prominences widely distant, separated by a non-sulciform

depression, having a very large, isolated, extremely deep and sensitive

pit at some distance behind the apical margin ; nuclial constriction

simple beneath ; elytra long ; first visible dorsal segment very short,

transversely lineate with minute pubescence Sonoiua

Metasternuxn short, in the line of the acetabula scarcely at all longer

than the intermediate coxae ; head as in Sonoma, but with two sensi-

tive patches in the nuchal constriction beneath ; eyes rather more con-

vex and prominent ; elytra short ; first visible dorsal nearly as long as

the second and entirely similar to it, completely devoid of the pubes-

cent line RafoilUS

Metasternum and elytra very short, the latter scarcely as long as the pro-

thorax ; front broad, the antennae widely separated ; vertex with two

foveas, not isolated from the frontal pit but joined by a foveiform chan-

nel ; basal segment of the abdomen without the transverse subpu-

bescent line ^Deleilda.

Coleopterological Notices, V. 435

Delenda Croiss. (^Eusonoma Reit.) has been recently proposed

(Coleopterologiste, 1891, p. 152) for a small species from Asia Minor.

It is closely related to Rafonus but appears to differ decidedly in the

structure of the upper surface of the head.

SONOm A Casey.

In this genus the head is generally small, the eyes well developed,

the tempora somewhat variable, generally rapidly convergent and

rounded to the neck, sometimes rounded and about as prominent

as the eye, never in the least angulate. Upper surface constantly

with two small nude post-median fovetfi, and a large extremely deep

abruptly excavated subapical pit, which is always more acutely

rounded behind and with its anterior margin more transverse. On

the under surface there is a deep transverse sulcus just behind the

mentum and maxillae, the plane of these parts sloping rapidly up-

ward from the base, the base of the maxillary cardo greatly ex-

posed ; there is also a deep transverse and perfectly simple nuchal

constriction. The under surface never has anj sign of the singular

and complicated excavations and caringe so common in Sagola.

The maxillary palpi have the first joint minute, simple and

scarcely more than one-third as long as the second, otherwise

nearly as in Sagola. Antennaj submoniliform, with the joints

loosely connected throughout, as usual in the tribe, gradually

thicker toward apex and with the basal joint much thicker and

longer than the second. The antennae are more clavate than in

Sagola, but much less so and shorter than in Rafonus. The pro-

notum has constantly two small discal fovese at the middle, besides

the complex subbasal impressions, and the metasternum a long

broad deep canal extending posteriorly from the outer side of the

middle acetabula.

The remarkable asymmetric modifications of the sixth ventral

segment of the female and the ventral pygidium of the male have

been alluded to above. They are present in both of our genera,

and probably constitute one of the most characteristic distinguish-

ing features of the tribe. The asymmetry affects very different

forms in the various species of the same genus, as may be seen

from the few examples figured on the plate.'

^ Tlie staphylinide genus Palamhius is also remarkable in having asym-

metric male sexual characters at the ventral apex.

436 Coleopterological Notices, V.

I cannot entirely agree with Mr Raflfray in considering the head

in Sonoma as even broadly tuberculate. If the front in this genus

has an antennal tubercle, it is difficult for me to conceive of any

method of distinguishing between the presence or absence of a

tubercle. Probably there is no such line of demarcation, but

assuredly if the front in Sonoma is tuberculate, there are very

few genera known to me which might not be forced by effort of

the imagination into this same condition. In my own opinion,

the tuberculate condition can only obtain when the front is strongly

narrowed and more or less prolonged, with the antennae approxi-

mate at base, the two supra-antennal prominences then come to-

gether, or nearly so, to form the tubercle.

My reasons for maintaining the validity of this genus, which is

said by Mr. Raffray (Rev. d'Ent., 1898, p. 15) to be identical with

Sagola, are several. In the first place, the genus Sagola as consti-

tuted in the interesting work of Raffray, is evidently composite,

and the cephalic chai-acters alone of such species as excavata and

snlcata of Broun, show that these at least are very aberrant and

in all probability generically distinct. The peculiar frontal pit in

Sonoma is such a constant and characteristic feature, that any

decided modification of it is almost sure to be accompanied by other

striking differences. Again, the fact that in our own fauna we have

two distinct genera of this tribe, both conforming to the general

organization of Sagola, tends still further to indicate that neither

of them can be identical with that genus. Finally, the fact that a

considerable number of Californian species, all indeed known from

that region, have certain characters, previously disregarded but

here assumed to be of generic value, perfectly and completely con-

stant, tends to show that the genus Sagola as now organized is

really a group of genera, perhaps as truly so as the old genus

Euplectus. This will I think be admitted if, as in the present case,

the newly discovered species range themselves into groups having

certain peculiarities of abdominal, cephalic or thoracic structure in

common. The generic value of these characters will depend solely

upon their constancy throughout groups of species, and not upon

any previously assumed criterion of their relative importance.

Our species are well characterized and may be distinguished as

follows : —

Black or piceous-black, the elytra rufous ; antennae rather stout but of the

usual length isabellae

Coleopterological Notices, V. 437

Rufous or flavo-testaceous in various shades, never in the least black or

piceous.

Terupora as prominent as the eye, rounded COrticiiia

Tempora always less prominent than the eye.

Head as wide as the prothorax ; tempora parallel but less prominent than

the eye ; prothorax hexagonal grandiceps

Head invariably distinctly narrower than the prothorax.

Prothorax about as long as wide longicollis

Prothorax more or less strongly transverse.

Elytra fully twice as long as the prothorax ; frontal margin much

narrower than the neck.

Head larger ; tempora at first moderately convergent, then strongly

rounded to the neck Slllisiniilis

Head very small, much narrower than the prothorax ; tempora

extremely convergent and broadly, feebly rounded from the eye

to the neck rilbida

Elytra distinctly less than twice as long as the prothorax ; frontal

margin subequal in width to the neck.

Prothorax widest before the middle parTicepS

Prothorax widest at about the middle; smaller species, 1.6 mm.

in length, paler in color, the head relatively larger, with the

tempora more strongly convergent and broadly rounded from the

eye ; elytra shorter, more abruptly expanded and rounded at

the sides behind Cavifrons

S. grandiceps n. sp. — Slender, parallel, polished, subimpunctate, pale

rufo-testaceous, the pubescence coarse and sparse. Head large, as wide as the

prothorax, wider than long, the frontal margin bisinuate and as wide as the

neck, equalling three-fifths of the maximum width ; eyes well developed,

moderately convex ; tempora parallel behind the eyes but not quite as promi-

nent, then strongly rounded to the neck ; subapical fovea very large, deep,

nearly as wide as long, triangular, with the apex behind ; foveas of the vertex

as usual ; antennae slender, as long as the head and prothorax, the outer

joints incrassate. Prothorax hexagonal, but slightly wider than long, widest

and narrowly rounded at the middle, the sides almost equally, strongly

convergent and nearly straight thence to base and apex, the latter but very

slightly narrower than the base ; large subbasal impression as usual, punc-

tate in the middle and just behind each lateral extremity, also prolonged

anteriorly at the sides, each spur extending to and including one of the usual

discal punctures ; lateral subbasal fovese isolated. Elytra fully as long as the

head and prothorax and one-half wider than the latter, rather longer than

wide, the sides nearly straight, feebly divergent, broadly, feebly arcuate near

the apex, the discal stria excavated beyond the middle. Abdomen rather

longer than the elytra but scarcely as wide, parallel, the border relatively not

quite as wide as usual ; structure throughout normal, the fourth visible dorsal

nearly one-half longer than the third. Length 1.4 mm. ; width 0.35 mm.

438 Coleopterological Notices, V.

California (Sta. Cruz Co.).

The male of this remarkably isolated species has the venter

abruptly and strongly, subcircularly concave near the apex, the

sides of the concavity on the disk of the fifth segment acutely ele-

vated, the cusp-like elevation with a tuft of long stiff setae. In the

female the transverse apex of the sixth segment is a little more

emarginate on the right, the middle produced as an abrupt rounded

cusp. A single pair.

This is the smallest, narrowest and most parallel species of the

genus.

S. loiigicollis 11. sp. — Moderately stout, depresseri, polished, impnnctate,

rufo-testaceous and coarsely, very sparsely pubescent throughout. Head about

four-filths as wide as the prothorax, distinctly wider than long, the frontal

margin feebly arcuate, equalling one-half the maximum width and as wide as

the neck ; eyes rather large, moderately prominent ; tempora to the neck as

large as the eye, strongly rounded, not at all prominent ; frontal pit large,

oval, more acutely rounded behind, abrupt, extremely deep and cavernous,

with the bottom spongy ; fovese of the vertex small, nude, situated behind

the middle and distant by less than one-third of tlie total width ; anlennje a

little longer than the head and prothorax, gradually slightly thicker toward

tip, eighth joint subglobular, ninth and tenth transverse. Prothorax very

nearly as long as wide, widest before the middle where tlie sides are strongly

rounded, very strongly convergent anteriorly, sinuate near the apex, the latter

feebly subtubulate, convergent and nearly straight in basal half ; discal fovefe

minute, at the middle, separated by one-fourth the width ; transverse impres-

sion just behind basal third straight, abruptly, minutely foveate at the middle

and just behind each end ; lateral foveas at basal fourtVi large, nude and free.

Elytra subquadrate, two-thirds longer than the prothorax and, near the apex,

nearly twice as wide ; sides more inflated and arcuate posteriorly ; sutural

striae coarsely punctate near the base, discal very coarsely, deeply impressed

and coarsely punctate in basal half, continued very feeldy and indefinitely

by a series of feeble punctures nearly to the apex, approaching the suture;

intermediate region with a series of two or three coarse subbasal punctures.

Abdomen about as long and wide as the elytra, the first visible dorsal scarcely

more than one-half as long as the second, with the interrupted pubescent line

broad. Length 1.6 mm. ; width 0.6 mm.

California (Sta. Cruz Co.).

The single male before me has the abdomen deflexed behind, the

venter broadly, indefinitely impressed near the apex but without

further modification, except a very feeble transverse tumidity near

the anterior margin of the sixth segment. Seventh or anal seg-

ment of the usual structure, with the oblique asymmetric median

portion rounded throughout behind.

Coleopterological Notices, V. 439

The unusually elongate prothorax will readily distinguish this

species.

S. Stllisimilis n. sp. — Rather wide, feebly subcuneiforin, polished, im-

puiictate, rufo-testaceons throughout ; pubescence very sparse. Head wider

than long, slightly though distinctly narrower than the prothorax, the frontal

margin arcuate, much narrower than the neck ; eyes well developed, convex ;

tempora moderately convergent, broadly rounded to the neck ; subapical pit

large, very deep, abrupt, but slightly longer than wide ; two punctures behind

the middle separated by much less than one-third the width ; antennse two-

fifths as long as the body, slender, last three joints gradually larger, basal

joint thick, elongate, cylindrical, nearly as long as the next two. Prothorax

one-third wider than long, widest at the middle where the sides are strongly

rounded, strongly convergent anteriorly, more feebly so in basal half and

feebly sinuate ; base two-thirds wider than the apex ; median punctures

faint ; subbasal excavation large, deep, transversely lunate, with a deeper

punctiform fovea at the middle and each end ; lateral subbasal fovese isolated,

large, deep. Elytra as long as the head and prothorax, two-thirds wider than

the latter, about as long as wide ; sides feebly divergent, broadly arcuate ;

discal punctate stria deeply excavated before the middle ; the other punctures

and sutural stria as usual. Abdomen about as long and wide as the elytra,

the first visible dorsal short, with the usual pubescent line ; fourth nearly one-

half longer than the third. Legs slender. Length 1.7 mm. ; width 0.65 mm.

California (Sonoma Co.).

In the single male the abdomen is deflexed toward apex, the

venter broadly, indefinitely impressed behind, the fifth segment not

modified but having the pubescence erect, with a very wide area in

apical half completely glabrous, impunctate and highly polished,

the posterior edge even throughout; sixth with a transverse, feebly

tumid line behind the anterior margin, bearing a fringe of erect

setae. Anal segment with the unevenly oval included segment far

to the left of the center.

This species is allied to parviceps, but differs in its larger head

with relatively much narrower frontal margin, and in the male

sexual characters.

S. rilbida n. sp. — Broader, feebly subcuneiform, polished, impunctate,

sparsely pubescent, deep rufo-testaceous throughout, the elytra paler. Head

small, scarcely more than two-thirds as wide as the prothorax, wider than

long ; eyes large, convex, the tempora very rapidly convergent and broadly

rounded to the neck, the latter distinctly wider than the truncate frontal mar-

gin and rather more than one-half as wide as the maximum width ; frontal

pit deep, abrupt, acutely rounded behind ; fovese small, behind the middle,

distant by nearly one-third the width ; antennae two-fifths as long as the body,

440 Coleopterological Notices, V.

gradually and distinctly incrassate toward apex. Prothorax fully one-lialf

wider than long, widest at the middle where the sides are very strongly

rounded, thence very rapidly convergent and broadly sinuate to the neck,

less convergent and just visibly sinuate to the base, which is about twice as

wide as the apex ; median fovese very feeble, separated by rather more than

one-fourth the width ; impression at basal fourth broadly, evenly arcuate,

minutely foveate in the middle and at each end ; lateral impressions large,

disconnected. Elytra confusedly sparsely and very feebly punctulate, rather

longer than wide, fully twice as long as the prothorax and two-thirds wider;

sides very feebly, gradually divergent from base to apex and just visibly

arcuate; discal stria deeply, coarsely impressed in basal half. Abdomen fully

as wide as the elytra but barely as long ; border strongly inclined, one-fifth

as wide as the disk ; first exposed dorsal one-half as long as the second, with

the usual fine pubescent line ; two to four gradually increasing in length.

Legs moderate, slender. Length 1.6-2.1 mm. ; width 0.6-0.7 mm.

California (San Francisco and Sta. Cruz).

The male has the abdomen more deflexed at apex, the venter

broadly, indefinitely impressed near the tip, but not otherwise at

all modified ; the anal segment has a cuneiform, anteriorly pointed

and submedian part, nearer the left than the right side and gradu-

ally flexed to the right anteriorly. This median part is probably

homologous with the flat enclosed pygidium of certain Euplectini,

but in the latter group it is bilaterally symmetrical. The female

has the transverse apex of the sixth ventral modified in a feeble but

complicated and indescribable manner, the anal segment behind it

broadly angulate and slightly but acutely produced at tip.

Not closely allied to any other species, the largest of the genus,

about equal to Rafonus tolulse. It is represented before me by a

large and homogeneous series.

S. parTiceps Makl.— Bull. Mosc, 1852, ii, p. 372 (Euplectus) ; Brendel :

Bull. Univ. Iowa, 1890, p. 79 (Faronus) ; Raffray ; Rev. d'Ent., 1893, p. 30

(Sagola).

Rather broad, deep rufo-testaceous, polished, impunctate and

sparsely pubescent throughout. Head small, transverse, fully

three-fourths as wide as the prothorax, with the usual sculpture ;

tempora nearly straight behind the eye but distinctly convergent,

then more strongly rounded to the neck, the latter but slightly

wider than the apical margin. Prothorax rather large, about one-

fourth wider than long, widest and strongly rounded distinctly

before the middle, the sides convergent and deeply sinuate thence

to the base, the latter two-thirds wider than the apex ; sculpture

Coleopterological Notices, V. 441

nearly as in suhsimilis. Elytra longer than the head and protho-

rax, fully three-fourths wider than the latter, nearly as long- as

wide, with the usual sculpture. Abdomen rather longer than the

elytra and fully as wide, of normal structure. Length 2.0 mm.;

width O.V mm.

The male in the LeConte cabinet from which I have taken these

characters, is in an imperfect condition, lacking the antennae; it is

one of the original Frankenhseuser types. The fifth ventral is

broadly, feebly emarginate almost in median two-fifths, the surface

bordering the emargination feebly concave, polished and glabrous ;

sixth broadly, feebly lobed anteriorly, the lobe fitting the emargina-

tion of the fifth, the surface along the edge of the lobe thrown up

in a distinct acute and arcuate ridge, bearing an erect fringe of

setae, and, behind the ridge, feebly impressed, glabrous and pol-

ished. Anal segment with the usual median piece far to the left

of the center.

RAFONUS n. gen.

This genus resembles Sonoma in general organization and form

of the body, but differs greatly in many points, the generic value

of which it is difficult to overlook. The head is smaller than the

prothorax, the frontal m'argin broadly augulate, subequal in width

to the neck and rather less than one-half as wide as the width

across the eyes, the antennal prominences strongly elevated, widely

distant and separated by a broad rounded depression, which is not

at all sulciform. Immediately behind the line of the antennae there

is a very large and extremely deep pit, as in Sonoma, abruptly de-

fined throughout its circumference, more acutely rounded behind

and subtruncate anteriorly ; there are also two distant nude foveae

on the vertex. The maxillary palpi have the first joint very small.

The antennae are slender, moniliform, one-half as long as the body,

the last three joints abruptly wider, forming a loose, but distinct

club. Prothorax slightly transverse, with the usual complex trans-

verse, subbasal impression and isolated lateral foveae, without discal

foveffi. Elytra much shorter than wide, but slightly longer though

much wider than the prothorax, the sides strongly divergent. Ab-

domen at least three-fourths longer than the elytra, the four first

visible dorsal segments gradually increasing in length.

Annals N. Y. Acad. Sci., VII, Nov. 1893.— 29

442 CoJeopferological Notices, V.

The single species was described by LeConte under the name

Faronus tohdee. It occurs in Pennsjivania and Georgia and ap-

pears to be rare.

EUPLECTINI.

The tribes or groups Euplectini and Trichonyni of Reitter and

Raffray, cannot be maintained as distinct and natural aggregates

of genera, and should be united to form the single tribe Euplectini.

The auxiliary tarsal claw varies by successive degrees in different

genera and species otherwise closely related, so that it is impossible

to draw any line of demarcation between two groups founded upon

this character, or any other which it seems possible to discover.

The second tarsal claw is distinctly visible as a minute hair-like

appendage in at least several species of European Euplectus, in

Trimiopsis, and also in Actium, which was recently re-described by

Mr. Raffray under the name Proplectus and placed in the "Tricho-

nyni." I have seen the second rudimentary claw plainly in Bihlo-

porns bicanalis and Euplectus californicus. Finally in Eujjlectus

crinitiis the auxiliary claw becomes as large, conspicuous and fully

formed as in Trichonyx itself, and yet in general habitus and details

of structure crinitus is urimistakably very closely allied to Euplectus,

and should not be widely separated from that genus.

The so-called second claw is always in the nature of an appendage,

even in Trichon3'x, Oropus and other typical trichonychide genera.

That is to say — the large claw is in every case perfectly in the

plane of the axis of the tarsus, the auxiliary claw projecting laterally

from its base.

In view of the great diversity in the relative size and distinctness

of the second tarsal claw, in pronotal structure and in the general

type of male sexual characters among our species of Euplectini, a

revision of them from a generic standpoint seems imperative. This

I have attempted in the following table, it being unnecessary in

treating a single limited fauna to indicate groups or subtribes by

special designation : —

Antennae inserted at the inferior apical angles of an extremely narrow advanced

and porrect frontal process, the tubercle formed by a complete amalgama-

tion of the antennal prominences without trace of dividing sulcus ; basal

joint of the antennae elongate-oval ; ungual appendage not distinct.

Rliiiioscepsis

Goleopterological Notices, V. 443

Antennje sliglitly less approximate, the frontal tubercle shorter and wider but

very pronounced, with the sides behind it constricted, the antennal

prominences narrowly separated by a very deep sulcus ; antennse as in

Oropus ; ungual appendage visible but exceedingly minute 9lorius

Antennae not inserted on a frontal tubercle, more or less widely distant at

base 2

2 — Antennae geniculate, the basal joint elongate ; prothorax bilobed ; appen-

dage of the tarsal claw distinct Rliexilis

Antennae not geniculate, the basal joint normal 3

3— Ungual appendage long and conspicuous, approaching one-half the length

of the principal claw 4

Ungual appendage more or less minute, but generally visible, in some cases

apparently obsolete 5

4— ^Prothorax with an acute marginal tooth at each side near the base ; first

dorsal segment longer than the second ; male sexual modifications afl'ect-

ing the fourth dorsal segment OropiIS

Prothorax without lateral sj^ines, but frequently minutely and unevenly

crenulate along the sides in basal half; first dorsal not distinctly longer

than the second.

Head more transverse ; body shorter ; pronotum with a fine subentire median

groove ; secondary male sexual characters aflecting the fourth tergite.

Rliexidius

Head less transverse ; body longer, more parallel ; pronotum without discal

impression; male characters near the apex of the abdomen beneath, or

near the middle of the lateral edges ; maxillary palpi partially received

in deep sublateral fossae, which ai'e separated from the cardo of the max-

illae by minute slender porrect processes Railiecia.

5 — Antennal club gradually formed, the last joint relatively moderate in

size 6

Antennal club consisting almost entirely of the larger abrupt terminal joint ;

pronotum without discal impressions ; first dorsal segment subequal to

the second 12

G — Prosternum not carinate along the middle 7

Prosternum finely but strongly carinate in the middle throughout the length ;

antennae less distant than in Eiiplectus 11

f — Prosternum with two distant diverging longitudinal carinae ; elytra with

two discal striae and three basal foveae ; abdomen without trace of basal

impressions or carinae, the segments equal in length Oropodes

Prosternum without diverging lines ; abdomen at least impressed at the middle

of the first two or three dorsal segments 8

8 — First dorsal not longer than the second ; palpal fossae wide, shallow, more

inferior and posterior, and not separated from the maxillae by porrect

processes 9

First dorsal much longer than the second 10

9 — Eyes large, bordered above and beneath by a broad abrupt channel ; pro-

notum with three very large, feebly connected, subbasal excavations,

without discal impression ; elytra and sexual characters as in Euplectus.

Acolonia

444 Coleopierological Notices, V.

Eyes normal.

Proiiotum with a subcentral discal impression ; elytra with a discal stria.

Head large, truncate, the antennae very remote ; abdomen with distinct

basal carinse ; male with a transversely subrhomboidal and longitudi-

nally carinate terminal segment of the venter EuplectllS

Head generally smaller, the front always more abruptly and strongly

narrowed ; antennae less distant ; abdomen without basal carinas ; male

with the flat oval subenclosed ventral pygidiura of Ramecia and Actium ;

species in general decidedly more minute than in Euplectus.

Tliesiastes

Pronotum without a discal impression ; elytra without a discal stria.

Bibloplectiis

lO — Pronotum without a discal impression Triluioplectll»

11 — Pronotum with the three subbasal fovese, not transversely connected ;

each usually prolonged forward in an impressed line BibloporilS

Pronotum having the subbasal foveas connected by a transverse sulcus.

Antennae moderately distant at base ; eyes rudimentary in the female ;

presternum long before the coxae ; tenth antennal joint normal ; pronotum

with an elongate discal sulcus ; male with feeble abdominal characters.

£utyp]ilUH

Antennae somewhat less distant at base ; eyes nearly similar in the sexes ;

prosternum short ; tenth antennal joint larger than usual ; pronotum

with a small subapical discal impression ; body shorter, convex ; male

with a small flat subcircular and enclosed pygidium at the ventral apex.

Tliesium

12 — Prothorax with rather well-defined edges at the sides toward base, and

with two distinct latero-subbasal foveae on the disk ; elytra with a discal

stria Actium

Prothorax without lateral edges or sublateral foveae, the transverse sulcus

continued on the flanks ; elytra without discal stria, the latter replaced

by a larger deep and subelongate basal impression Triniiopsis

Distinguishing peculiarities in thoracic structure both pronotal

and prosternal, it will be noticed, have been freely used in the above

table in defining the genera. I am quite convinced that this is the

proper course to take in dealing with the genera, at any rate in

some parts of this particular tribe : first, because every distinct

peculiarity in the structure of this part of the body, appears to be

accompanied by radical divergencies in other important features.

Taking the old genus Euplectus as represented within our faunal

limits, for example, we find that all of those species without the

discal pit of the pronotum are distinguished either (Ramecia) by a

formation of the tarsal claws identical with that of Trichonyx, or

(Bibloplectus) by an extremely minute size of body and more

Goleopterological Notices, V. 445

approximate antennae, or (Acolonia) by a peculiar structure of the

lateral parts of the head near the eyes.

Secondly, because we find these differences accompanied in every

instance by radical divergencies in the type of male sexual manifes-

tation, a feature which in the Pselaphidae possesses an importance

which has not always been duly appreciated. In many parts of

this family the developmental energy, so to speak, or the energy

expended in differentiating species, seems to have been exerted

solely upon the males, the females remaining mutually almost

similar. This is a familiar fact among the species of lleichenbachia

and Batrisus. Types of male sexual modification have therefore

great importance, and, when the same type pervades a number of

species otherwise allied, we are frequently even compelled to sepa-

rate and define genera by such characters alone, as has beeu done

by Reitter in the case of Ctenistes and Sognorus and as I have

already tried to demonstrate in regard to the allies of Bryaxis (Bull.

Cal. Acad. Sci., II, p. 179).

MORIITS 11. gen.

This remarkable genus occupies a position with respect to Oropus

nearly corresponding with that of Rhinoscepsis to Euplectus. The

head is strongly but gradually narrowed before the eyes, forming

at apex a wide but strong antennal tubercle, rendered still more

prominent by lateral constrictions immediately behind it, the very

pronounced antennal prominences separated by a coarse, deeply ex-

cavated fossa, which behind them becomes shallower and bifurcates,

sending a feeble oblique sulcus to each of the vertexal fovese. The

antennae are almost exactly as in Oropus though very narrowly

separated at base. The under surface is smooth and without trace

of caringe or palpal fossae, but has in the middle just behind the

mentum, a very abruptly and strongly elevated, broad and parallel

elevation which terminates abruptly midway to the neck. Maxil-

lary palpi well developed, sparsely pubescent ; first joint small ;

second finely pedunculate in basal half, the apical half abruptly and

strongly claviform ; third smaller than the clava of the second, sub-

globular; fourth nearly as long as the preceding together, stouter,

fusiform, twice as long as wide, with a long slender terminal pro-

cess. The other oral organs are normal in structure, the mentum

small, the labial palpi minute and slender. Frosternum long, ob-

liquely, feebly biimpressed, the mesosternum with two anteriorly

44G Coleopterological Notices, V.

convergent carinae and three pubescent foveas, and the metasternuni

in the middle one-half longer than the intermediate coxae. The an-

terior coxa3 are long' and conical, the intermediate narrowly sepa-

rated by the meso- and metasternal processes which meet just before

their median line, the posterior transverse, contiguous, moderately

prominent internally. Abdomen with six dorsal and seven ventral

segments, the first ventral unusually long, greatly visible behind

the coxte throughout, and, in the middle, nearly one-half as long as

the second, the latter very large, as long as the entire remainder ;

first dorsal covered, the second much longer than the third, with a

deep, transversely oval and pubescent excavation at the middle of

the base ; margin moderately wide, inclined.

There appears to be but one species as follows: —

M. OCCidens n. sp. — Moderately stout and couvex, polished, dark rul'o-

testaceous tliroughout, subimpuiictate, ttie elytra coarsely sparsely and very

feebly rugoso-pnnctate ; pubescence long, coarse, erect, not very abundant

except at the autero-lateral and under surfaces of the head where it is; erect

bristling and very dense. Head as wide as the prothorax, as long as wide ;

eyes small, just behind the middle ; outline behind them almost semi-circu-

lar; fovese on a line through the eyes, distant by one-half the total width ;

antennae a little longer than the head and prothorax, stout, first joint cylin-

drical, longer than wide, second a little narrower, globular, three to eight still

slightly smaller, transverse, five and seven larger than six and eight, ninth

and tenth larger, transverse, eleventh subquadrate, broadly conical at apex.

Prothorax nearly as wide as long, widest at apical third, the sides thence feebly

convergent and straight to the base but with a shallow emargination midway,

strongly convergent and sinuate anteriorly to the neck, the latter two-thirds

as wide as the base ; disk with a strong transverse excavation at basal third

from side to side, divided into three parts by two cariniform elevations, the

lateral portions irregular and continued to the base, the median consisting of

three large coaleacent fovese, the middle one more posterior, continued forward

beyond the center of the disk by an almost imperceptible impression ; surface

just before the basal margin divided into five nearly equal deep impressions

by four short longitudinal carinse, the lateral communicating with the irregu-

lar lateral impressions as before mentioned, and the middle one similarly with

the median discal impression, the two others deeper and more foveiform.

Eljjtra short, two-fifths wider than long, one-half longer than the prothorax

and fully twice as wide, one-half wider near the apex than at base ; sides

strongly oblique and nearly straight ; humeri obsolete ; disk with the single

arcuate sutural stria only, also with a deep stria and post-humeral fovea on

the flanks, each with four basal fovese, the two infra-humeral coalescent and

prolonged posteriorly for a very short distance as a broad gradually evanes-

cent impression ; intermediate fovea isolated, without trace of stria. Abdomen

fully as wide as the elytra and distinctly longer. Legs slender ; posterior

Goleopterological Notices, V. 447

tarsi long and slender, the third joint a little longer than the second, with a

rather long single claw, having an exceedingly minute basal appendage as in

Euplectus. Length 1.6 mm. ; width 0.6 mm.

California (Sta. Cruz Co.).

Tiie unique type is unfortunately broken into a number of pieces

from which the measurement has been compounded ; it is apparently

a female.

OROPUS Casey.

The median thoracic sulcus, which is so characteristic a feature

of Oropus and Rhexidius, is subject to sing'ular malformation in

both of these <?enera, being sometimes completely interrupted or

irregularly broken up, apparently by reason of accidental circum-

stances attending- emergence from the pupa, when the integuments

are in a plastic condition. I have figured one of these malforma-

tions in a species described under the name interruptus, and Dr.

Brendel has recorded another case in his description of Rhexidius

intermedins.

The species of Oropus are readily divisible into two groups as

follows : —

First dorsal segment relatively shorter ; eyes in the female much smaller

than in the male, the latter with the fourth dorsal not greatly modified,

having simply a transverse subbasal line of minute pubescence ; females

very rare in proportion to the males ; species generally larger.

Head small, much narrower than the prothorax StriRtus

Head much larger, equal in width to the jjrothorax or extremely nearly so.

Head and 2)rothorax relatively smaller, the thoracic teeth exceedingly

minute COllvexiIS

Head and prothorax larger ; thoracic teeth larger, more distinct.

Male with the fourth dorsal unimpressed, having a long very fine,

transversely arcuate line of minute pubescence iiitemiptlis

Male with the fourth dorsal impressed along the broader and shortei-,

nearly straight subbasal line of pubescence ; elytral striae more

abbreviated ; size smaller abbreviatllS

First dorsal relatively much longer ; eyes in the female only slightly smaller

than in the male, but with the facets smaller and mutuallj'' much more

distant ; male with the fourth dorsal broadly concave, the upper margin

produced posteriorly and closing inferiorly the produced median lobe of

the third ; males rare, the females abundant ; size generally smaller ;

elytra more abbreviated.

Larger species ; pronotum sparsely and simply punctate throughout.

nioiitantis

Small species ; pronotum densely and strongly granulose between the trans-

verse sulcus and tlie basal margin Cavicailda

448 Goleopterological^ Notices, V.

Among the fifteen representatives of the first group in my cabinet

there is only one female, while among the sixteen specimens of the

second group there are only three males. This indicates without

doubt a difference in the life habits of the species composing the

two sections of the genus, which should perhaps be treated as sub-

genera. The peculiar conformation of the elytral striae mentioned

by me in the description of montanus (Bull. Cal. Acad., II, p. 4'79)

is a malformation ; it is not observable in any other of the nume-

rous examples in my cabinet, many of which are from Sta. Cruz Co.

O. cavicailda n. sp. — Moderately stout, convex, shining, dark rufo-

tcstaceous throughout ; pubescence moderate in length, rather abundant.

Head much wider than long, very slightly narrower than the prothorax, sub-

hexagonal, the eyes small, much nearer the base than the apex, the tempora

strongly convergent, rather longer than the eye and nearly straight ; fovese

deep, widely separated, connected by the usual deep parabolic groove ;

antennal tubercles strong, each with a deep rounded fovea immediately above

and behind the point of antennal insertion ; surface polished, subimpunctate,

beneath minutely punctate and finely, densely setose; antennse short, stout,

the, tenth joint fully twice as wide as long, eleventh stout, conoidal, as long

as the preceding four. Prothorax about as long as wide, widest at the middle ;

sides convergent and rounded to the apex, convergent and straight to the

base ; apex narrower than the base, subtubulate ; lateral teeth small but well

formed and distinct ; disk with the usual fovese and sulci, rather coarsely

feebly and sparsely punctate, the punctures becoming granuliform near the

base. Elytra not as long as wide, one-half longer and fully three-fourths

wider than the prothorax, the three discal striae deep, rather short, none ex-

tending much beyond the middle. Abdomen scarcely longer but a little nar-

rower than the elytra, the first dorsal constituting one-half its total length

from above, tlie basal impression two-thirds of the total width, not carinate.

Length 1.4 mm. ; width 0.5 mm.

California (Marin Co.).

A single male, having the third dorsal acutely produced in a tri-

angular lobe, the fourth vertical, concave, not visible from above,

glabrous, polished, impunctate throughout except abruptly, densely

so along the lower margin. With the male type is associated a

female from Siskiyou, which agrees very well. This is by far the

smallest known species of the genus.

In all of the species of this genus the elytra have, along the apical

margin, an even row of small slender porrect and strigose scales.

Coleopterological Notices, V. 449

RHEXIDIVS Casey.

This genus is closely allied to Oropus, but differs in the absence

of well-defined and acute marginal thoracic teeth, in the more minute

size and shorter, more robust form of the body, and in the shorter

first dorsal segment. This latter character, however, in view of the

variation seen in the two groups of Oropus, may not be of decisive

value. Although the different habitus of the two genera prompts

me to believe that they are really distinct, there are two characters,

in addition to general organization, which serve to show further

how closely they are really allied, viz. : the presence of the peculiar

granuliform sculpture of Rhexidius in Oropus cavicavda, and the

fact that the part of the body subject to sexual modification is the

fourth dorsal segment.

I have not seen the eastern species recently described by Brendel,

but Euplectus canalictdatus Lee. appears to be congeneric, although

differing in having but three basal foveae and obsolete discal striae,

instead of the four basal foveas and three short striae of the two Cali-

fornian representatives; even here however there is considerable

variation in this respect, the two outer foveae being much more

approximate or semi-coalescent in granulosus than in asperulus.

The basal foveae will be shown to be without value as a generic

character also in several other parts of the Euplectini. E. canali-

culatus was recentl}^ redescribed by Mr. Raffray under the name

Prorhexius sylvalicus (Rev. d'Ent., 1890, p. 191).

The two known Californian species are the following: —

Elytra short, transverse, but slightly longer than the prothorax, the head and

prothorax relatively large ; pubescence coarse, longer and sparser.

granulosus

Elytra large, about as long as wide, subequal in length to the head and pro-

thorax together, the latter both smaller ; pubescence shorter, denser and

more decumbent asperuluS

Both of these species are represented by large series in my

cabinet, •

R. asperulus n. sp. — Rather stout, convex, shining, dark rufo-testace-

ous throughout, noticeably pubescent, the head and pronotum covered with

small sparse granuliform puuctures. closer on the head, the elytra and abdo-

men rather strongly, sparsely punctate, the punctures feebly asperate. Head

transverse, thick, just visibly narrower than the prothorax, with two small

deep nude and very remote foveae which are entirely isolated, also, just behind

450 Coleopterological Notices, V.

the frontal margin, a long deep abrupt evenly and feebly arcuate groove, not

connected in any way with the fovese but flexed obtusely outward at the sides,

crossing the antennal tubercles; eyes moderate; tempora convergent behind

them ; antennae nearly as long as the head and prothorax, with the last joint

subequal to the five preceding; under surface with rather dense erect setse.

Prothorax but slightly wider than long, widest and rather strongly rounded at

the middle, the sides convei'gent and straight thence to the base ; apex broadly

and feebly subtubulate; median sulcus not quite attaining the apex, the

transverse line beyond basal fourth. Elytra subquadrate, the humeri much

more rectangular and wide exposed than in granulosus, nearly twice as wide

as the prothorax ; three discal striae distinct, the outer very short. Abdomen

scarcely as long as the elytra — viewed vertically — and but slightly narrower,

the first dorsal not in the least longer than the second. Length 1.2 mm. ;

width 0.45 mm.

California (San Francisco and Sta. Cruz Cos.).

The male sexual characters are feeble, the fourth dorsal being

broadly impressed at each side of the base, each impression extend-

ing from near the middle to near the lateral margin and having its

posterior limiting line posteriorly arcuate, the impressed surface

glabrous polished and impunctate; the punctures of the third dorsal

become very dense along the apical margin, the latter not otherwise

abnormal. In the male of granulosus the tw^o basal impressions

are almost contiguous. The sculpture of the head in both of these

species is altogether different from anything known in Oropus.

In canaliculatus the general features of cephalic sculpture are the

same, but in the male of that species the transverse frontal marginal

ridge is tuberculate in the middle, and, further, the fourth dorsal is

not modified, the venter having a broad shallow lunate impression

near the apex. These differences, taken in connection with elytral

structure, may be of subgeneric value.

R^IMECIA n. gen.

The true affinities of this genus are rather difficult to state, for,

in spite of its great similarity to Euplectus, it has the second tarsal

claw well developed, and differs considerably besides in the struc-

ture of the mouth and palpal fossae. The species also differ much

among themselves, especially in general appearance, but are suffi-

ciently homogeneous in oral and pronotal structure, as well as other

essential points of organization.

The most variable of the minor structural features is perhaps the

abdominal carinas. The.se are short in all, and, in one at least, be-

Coleopferological Notices, V. 451

come completely obsolete ; in crinifa, however, the}^ are distinct

and finely cariniform on the first three terfjites. In decora they

become very widely separated. The discal stria of the elytra is

also very inconstant in form, and there may be three basal foveas,

although tvvo appears to be the general rule.

The known species are only six in number and may be thus dis-

tinguished : —

Head smaller tliaii the prothorax.

Body elongate, depressed and .subparallel, the punctures dense and asperu-

late criiiita

Body shorter, convex, smooth and polished, the pubescence much less con-

spicuous ; integuments subimpunctate Capitllllllll

Head as wide as the prothorax ; body shorter, compact and more or less con-

vex.

Elytra with two basal foveae ; abdominal carinse minute.

Discal stria of elytra coarsely impressed, gradually dilated toward base;

pubescence longer, distinct; basal carina? of abdomen less distant.

The stria very short, vanishing far before the middle ai'CIiata,

The stria long, extending far behind the middle discreta

Discal stria very fine, arcuate, extending fully to apical fourth, more

abruptly dilated and foveate at base ; pubescence sparse and exces-

sively minute ; carina of abdomen minute and unusually distant, sepa-

rated by fully one-half the discal width decora

Elytra with three basal fove?e ; basal impression and carinas of abdomen

completely obsolete dentiventris

The finely subgranulate punctures of the anterior parts of the

body in criyiita, is interesting and significant in view of the preva-

lence of this type in Rhexidius.

In arcuata there seem to be two very short triangular abdominal

carinse ; I cannot discover any however in discreta, but the type of

this species is not in entirely perfect condition.

R. discreta n. sp — Subparallel, moderately convex, polished, dark rufo-

testaceous ; the abdomen somewhat more piceous ; integuments subimpunc-

tate ; pubescence coarse, stiff, rather abundant and semi-erect. Head fully

as wide as the prothorax, rather wider than long, the apex truncate and two-

thirds as wide as the maximum width ; fovese distinct, separated by nearly

one-h-alf the total width, connected by a deep entire and impressed parabolic

sulcus ; antennal prominences crossed by a tine shallow groove ; eyes small

but prominent, much shorter than the tempora, the latter large, convergent ;

base very broad, sinuate; antennae one-half longer than the head, normal in

structure : under surface with a few widely scattered short erect and coarse

capitulate setae. Prothorax very slightly wider than long, widest at tlie middle,

the sides thence convergent and broadly, evenly arcuate to the apex, also

452 Coleopterological Notices, V.

abruptly convergent and just visibly sinuate thence to the base, the latter

wider than the apex ; disk even, with a transverse impressed biarcuate sulcus

and two sublateral fovese at basal third, the sulcus dilated in the middle.

Elytra relatively small, one-half longer and wider than the prothorax, the

humeri very oblique and subdentate behind the base, this appearance being

due to the deep post-humeral fovea ; disk with a deep coarse stria. Abdomen

a little longer and slightly narrower than the elytra ; dorsal segments equal,

not perceptibly carinate, the fifth tumid in the middle. Legs short. Length

1.2 mm.; width 0.3 mm.

Pennsylvania.

A single female specimen, having the venter unmodi6ed, the ter-

minal segment large, nearly flat, and posteriorly produced at the

middle in a rounded lobe.

R. dentiventris n. sp. — Moderately stout, convex, polished, paler,

rufo-ferruginous througiiout, impunctate, the vestiture rather long, coarse

and somewhat abundant. Head large, rather wider than the prothorax, a

little wider than long, the foveje distant by nearly one-half the total width,

connected by a coarse deep impressed semi-circular and entire sulcus ; trans-

verse frontal ridge very long, scarcely more than one-half as wide as the

maximum width ; eyes moderate, prominent, not longer than the tempora,

the latter feebly convergent and nearly straight : base broadly sinuate ;

antennae scarcely more than one-third longer than the head; under surface

with a few widely scattered erect setse. Prothorax a little wider than long,

widest rather before the middle, the sides there evenly and not very narrowly

rounded, gradually convergent and broadly sinuate thence to the base,

strongly convergent near the apex, the latter much narrower than the base ;

transverse biarcuate sulcus at basal third deep and well developed. Elytra

moderate in size, two- thirds longer and three- fourths wider than the protho-

rax, not quite as long as wide, convex, with a deep coarsely impressed, gradu-

ally attenuate discal stria, extending behind the middle. Abdomen not longer

and distinctly narrower than the elytra, the segments equal. Length 1.15

mm. ; width 0.4 mm.

Virginia.

The male has the anterior and intermediate legs shorter and

stouter than the posterior as usual, the venter broadly, feebly im-

pressed near the apex, with the sixth segment large, deeply sinuate

at apex, receiving a nearly circular flat pygidium, and the third

strongly obliquely toothed at the sides, the teeth prominent also

from a dorsal point of view at the sides of the apparent second

segment. This is a very distinct and interesting species, repre-

sented before me by a single male.

In the only antenna remaining, the sixth and seventh joints are

Coleopterological Notices, V. 453

completely anchylosed, but this may possibly be a deformity. The

second tarsal claw is distinct as in the other species, and nearly one-

half as long as the principal.

OROPODES n. gen.

The body in this genus resembles Euplectus in general outline,

but the head is smaller, more orbicular and with less distant an-

tennae ; the elytra have two distinct though short discal siriae, and

the abdomen is completely devoid of basal impression or carinse.

The prosternum is rather long before the coxse, and has a fine im-

pressed and carinate line extending from each ante-coxal fovea to

the apical margin, where it is met by the similar fine raised line

separating the prosternum proper from its parapleurse. The dorsal

segments are equal, the first ventral extending beyond the coxae

and greatly exposed throughout the width. Legs rather slender ;

hind tarsi more than one-half as long as the tibiae, with the second

joint a little longer than the third ; claw well developed, the appen-

dage not visible in the type.

The single species has a facies which is somewhat intermediate

between Euplectus and Oropus: —

O. orlJiceps n. sp. — Elongate, subparallel, feebly convex, polished, sub-

impunctate and dark rufo-testaceous in color throughout ; pubes^cence ratlier

long but sparse. Head slightly narrower than the prothorax, nearly as long

as wide; eyes small, slightly prominent, the tempora large and long, at first

feebly convergent, then broadly rounded to the neck which is not wider than

the apex ; occiput with a feeble tumor at the middle of the posterior declivity ;

fovese small, deep, perforate, nude, distant by one-third the total width, situ-

ated distinctly behind the middle, each continued forward by a deep oblique

sulcus, the two coalescent anteriorly in a large flat depressed area separating

the large and prominent antennal tubercles ; antennae widely separated, stout,

rather longer than the head and prothorax, the club gradual, eleventh joint

subquadrate, obtusely pointed ; under surface smooth, polished, subimpunc-

tate, with fine sparse subrecumbent hairs, entirely devoid of erect capitulate

setae, but having the usual deep rounded impression near the neck ; maxillary

palpi nearly as in Euplectus but stouter. Prothorax distinctly wider than

long, widest just before middle, where the sides are broadly rounded and

convergent to the neck, less strongly convergent and nearly straight in basal

half, the base much wider than the apex ; disk with a deep transverse pit

at basal fourth, feebly connected with two large deep sublateral fovese, also

with a large feeble median impression between the subbasal pit and the basal

margin, and another subinterrupted extending between this and each basal

angle ; also with a narrow, very feebly impressed, siibentire median sulcus.

454 Coleopterological Notices, V.

Elytra as long as the head and prothorax, one-lialf wider than the latter and

fully as long as wide, the sutural stria deep and entire, the discal short, the

outer terminating at basal fourth, the inner at basal two-fifths. Abdomen about

as wide as the elytra and scarcely as long ; border broad, one-fourth as wide

as the disk. Ventral segments two to four decreasing almost imperceptibly

in length ; hind coxae contiguous, the abdominal process short and acutely

triangular. Length 1.5 mm.; width 0.45 mm.

California (Los Angeles Co.).

The unique specimen has no striking sexual modifications, and is

apparently a female.

ACOLOi\IA n. gen.

The form in this genus is shorter and more convex than in

Euplectus and the eyes are larger. The infraocular channel be-

comes narrowed anteriorly and communicates with the antennal

excavation. The prosternum is long, not carinate, the first three

dorsal segments equal, the first two each with two long strong

divergent carinse, the fourth much longer than the preceding.

First ventral extending beyond the coxae ; two to five rapidly de-

creasing in length. Male with the large convex rhoraboidal and

carinate ventral pygidium of Euplectus. Legs rather short and

stout, the tarsi shurt and compressed, the third joint of the poste-

rior rather longer than the second ; claw long, arcuate, with a very

minute internal basal appendage. The pronotum has no discal im-

pression, and each elytron has at base two pairs of deep foveae.

Our species has been described under the name Euplectus caci-

collis Lee.

EUPLECTUS Leach.

The somewhat numerous species within our boundaries agree

satisfactorily with the European, but are probably more hetero-

geneous. Among those in my cabinet three subgeneric groups are

readily observable : —

Head not quite so large, sometimes very slightly narrower than the prothorax,

with two larger widely distant fovefe situated behind the middle, the inter-

mediate surface of the vertex strongly convex ; body less slender, more

convex I

Head larger, Hatter above, frequently mucli larger than the prothorax, with

two smaller, more anterior and much more approximate fovefe ; body

smaller, narrower and more depressed.

Coleopierological Notices, V. 455

Anteiinse louger, the club normally small ; eyes more or less prominent ;

elytra much wider than the head II

Antennae short, the clnb larger and thicker, as long as the preceding six

joints ; eyes more inferior, scarcely visible from above ; elytra parallel,

not appreciably wider than the head Ill

Group I is represented by difficilis, congemer, sexualis, spinifer,

linearis, hudsoniciis, interrupt us and probably longissimus ; group

II by longicollis, confluens, elongaius, californicus and ioivensis

and group III by perfenuis. Group II is apparently homologous

with European species of the honiundoiri type.

The true position of planipennis and rotundicollis of Brcndel

cannot be definitely stated at present ; they are apparently both

peculiar, not only in the smaller head but in other features also,

and in the subjoined catalogue I have placed them at the end as

requiring further investigation.

The name longicollis is preoccupied by Reitter for a New Zealand

species, but as the two may in reality belong to different genera it

is not advisable to change the name just now. The same remark

applies to linearis Lee. and lineaiHs || King and rotundicollis Reitt.

and 7-otundicolhs |] Brend.

The following species seem to be undescribed : —

E. IllldsonicilS n. sp — Slender, somewhat convex, polished and pale

rul'o-testaceous throughout ; pubescence short, coarse and rather dense ; head

and pronotum with very coarse feeble punctures, which can scarcely be indi-

vidually defined but which give a feebly asperate and uneven appearance ;

elytra and abdomen subimpunctate. Bead about as wide as the prothorax,

a little wider than long, broadly truncate at apex, the foveffi distant, behind

the middle, the middle of the vertex strongly convex ; parabolic sulcus very

deep ; antennae nearly as long as the head and prothorax, normal ; eyes small

but prominent, the tempora slightly convergent, nearly straight and a little

longer than the eye. Prothorax distinctly wider than long, widest just before

the middle where the sides are broadly rounded to the apex, convergent and

unevenly serrulate to the base, somewhat prominent opposite the foveae ; disk

with an elongate pit extending from near the apex to the middle, also with