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Memoirs on the Coleoptera.
| Atheta (Hilara) pennsylvanica Bernh.—Slender, parallel, rather convex, somewhat shining, the reticulation distinct, coarse but feeble on the abdomen; punctures fine, not dense: head and abdomen black, the latter with the first two segments and apex pale testaceous; prothorax pale flavo-testaceous, the elytra darker, piceo-testaceous, the legs pale; vestiture inconspicuous; head slightly wider than long, slightly inflated basally, the eyes not at all prominent and at very much more than their own length from the base, the carinæ fine, extending scarcely to the middle; antennæ pale brown, short and stout, gradually and distinctly incrassate distally, the basal joint much longer than the second, which is only about one-half longer than wide, much longer than the third, which is constricted basally, the outer joints strongly transverse, separated, the last obtusely ogival; prothorax moderately transverse, widest anteriorly, where it is scarcely evidently narrower than the elytra, distinctly wider than the head, the sides very feebly arcuate, the median line broadly impressed throughout; elytra transverse, the suture impressed, except apically, and only just visibly longer than the prothorax, the apices not sinuate; abdomen rather longer than the fourth, the sixth (♂) broadly arcuate, becoming very feebly and gradually sinuate medially at apex, with the punctures minute and very sparse. Length 1.5 mm.; width 0.3 mm. New York (Catskill Mts.), Rhode Island, Pennsylvania and Virginia. |
Differs from palliola in the much more lateral form, shorter elytra, larger prothorax and wider abdomen.
| Atheta (Hilara) unigena n. sp.—Coloration, lustre and sculpture as in the preceding, the abdomen however testaceous, with a blackish cloud involving the fourth and about basal half of the fifth tergites; form much less parallel; head slightly wider than long, not at all dilated basally, the eyes convex, prominent, at more than their own length from the base, more prominent than the tempora, which are parallel and then broadly rounded to the base, the carinæ as in pennsylvanica; antennæ pale, nearly as in that species though slightly longer; prothorax much smaller and rather more transverse, parallel and more rounded at the sides, similarly notably wider than the head but very distinctly narrower than the elytra, not impressed; elytra much larger, parallel, moderately transverse, truncate at apex, the humeri much more exposed at base, the suture not impressed but very much longer than the prothorax; abdomen distinctly narrower than the elytra, not so parallel, feebly narrowed apically, the fifth tergite much longer than the fourth, the male sexual characters feeble. Length 1.6 mm.; width 0.32 mm. New York (Catskill Mts.). |
Very distinct from the preceding and more nearly of the type of palliola, though differing in its larger and longer antennæ, less parallel abdomen, unimpressed elytral suture and larger size.
| Atheta (Hilara) validiceps n. sp.—Similar in sculpture, lustre and pubescence to the two preceding but larger, more parallel than in unigena, dark rufo-piceous, the head a little darker than the prothorax and elytra, the abdomen |
