Page:Memoirs on the coleoptera (IA memoirsoncoleopt01case).pdf/40

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Memoirs on the Coleoptera.
Atheta brumalis n. sp.—Stout, not parallel, moderately convex, somewhat shining, the abdomen polished, the punctures fine, asperate and close-set; color black or blackish, the elytra dark piceo-luteous, the legs pale, the antennæ black, piceous basally; head moderately small, the eyes at nearly their own length from the base, the carinæ very fine, not quite entire; antennæ long, rather stout but subparallel, the outer joints moderately transverse, the second a little shorter than the third; prothorax rather small, transverse, parallel but only very moderately rounded at the sides, much wider than the head and correspondingly markedly narrower than the elytra, the latter larger, only moderately transverse, very much longer as well as wider than the prothorax; abdomen parallel, slightly narrowing apically, much narrower than the elytra, the fifth tergite barely as long as the fourth, the sixth (♂) with a small and narrow, internally concave auricula at each side, projecting behind very slightly, the apex between them broadly, evenly and very feebly sinuate throughout the width and scarcely at all modified; mesosternal process projecting rather unusually far between the coxæ and drawn out but not very finely aiculate at tip, approaching the triangular metasternal projection rather closely. Length 2.8 mm.; width 0.77 mm. British Columbia (Metlakatla),—J. H. Keen.

The sexual characters seem to distinguish this species from the very inadequately described metlakatlana, of Bernhauer.

Atheta carlottae n. sp.—Resembles the last very closely but with a larger prothorax and tapering abdomen, stout, subfusoid, similar in coloration, the fine speculate sculpture denser, the lustre duller; head moderate, the eyes at evidently less than their own length from the base, the carinæ fine but virtually entire; antennæ a little longer, moderately stout, the second joint distinctly shorter than the third, which is notably larger than in brumalis, the outer joints but slightly transverse; prothorax moderately transverse, parallel, more rounded at the sides, much wider than the head but only a little narrower than the base of the elytra, the latter larger, moderately transverse, much longer than the prothorax; abdomen gradually feebly tapering and with nearly straight sides from base to apex, at base much narrower than the elytra, the fourth and fifth tergites equal in length, the sixth (♂) with a small narrow auricle at each side of the apex, scarcely at all projecting posteriorly, the apex broadly and feebly emarginate from side to side in an even and very obtuse angle, the edge nearly even but the adjoining surface feebly and briefly fluted, giving a slight appearance of crenulation; sterna nearly as in brumalis but with the metasternum rather shorter and more obtusely angulate; basal joint of the hind tarsi a little shorter than the second. Length 2.7 mm.; width 0.8 mm. Queen Charlotte Islands (Massett),—Keen.

Distinguishable from brumalis, to which it is rather closely allied, by the more elongate antennæ, larger and more laterally rounded prothorax, tapering abdomen and sexual, and, to some extent, the sternal characters.

Atheta blandita n. sp.—Moderately stout and convex, not parallel, shining,