26
Memoirs on the Coleoptera.
This species may be known readily by its short and transverse prothorax, virtually as wide as the elytra and by the antennal structure, the second and third joints being shorter than in any of the preceding. It is very abundant in individuals like nearly all of this group.
| Atheta elota n. sp.—Small, barely convex, somewhat shining, the abdomen strongly so, pale piceo-rufous, the elytra albido-flavate, the abdomen clouded subapically; antennæ brown, testaceous basally; punctuation very fine, close, scarcely at all rough; head transversely orbicular, the eyes well developed, at much less than their own length from the base, the carinæ distinct, entire; antennæ notably short, stout, slender basally, joints five to ten strongly transverse, second and third as in gnoma; prothorax rather flat, strongly transverse, parallel and rounded at the sides, not much wider than the head and only slightly narrower than the elytra, not impressed; elytra moderately transverse, much longer then the prothorax; abdomen parallel, narrower than the elytra, the fifth tergite very distinctly longer than the fourth, the sixth (♂) truncate, the truncature feebly sinuate medially, the edge thin and even, the adjoining surface transversely even to the lateral carinæ, which are straight and fine, with no appearance of auriculiform process; sterna as usual in this group, the hind tarsi with the first four joints equal, the first not evidently shorter then the second. Length 2.2 mm.; width 0.55 mm. New York (Catskill Mts.). |
Distinguishable by its small size, rather flat surface, pale coloration, short antennæ with strongly transverse joints and by the male sexual characters.
| Atheta insidiosa n. sp.—Parallel, rather depressed above, moderately shining, except the abdomen which, as usual, is strongly shining and minutely, sparsely punctulate, the punctures elsewhere very fine, rather close but not strongly asperate; vestiture very short, not conspicuous; coloration as in the preceding species, the dark areas piceous and not black; head well developed, transverse, the eyes rather prominent, at much less than their own length from the base, the carinæ entire; antennæ as in elota, the second and third joints similar though a little longer, five to ten distinctly though not quite so strongly transverse; prothorax similar; elytra a little more transverse, more evidently wider and very much longer than the prothorax; abdomen nearly similar, except that the sixth tergite (♂) is broadly sinuato-truncate, the short straight fine carinæ limiting the apical surface laterally a little stronger and gradually sensibly reflexed, and the edge has, medially, two very feeble rounded subtumid lobes, mutually separated by one-half more than either from the rounded side angles of the apex; sterna as usual in this group, except that the mesosternal process is less acutely acicular. Length 2.6 mm.; width 0.63 mm. New York (Catskill Mts.). |
Closely allied to elota but larger, stouter, with slightly less abbreviated antennæ, more prominent tempora and differently de-
