Page:Memoirs on the coleoptera (IA memoirsoncoleopt01case).pdf/50

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 * Atheta nympha n. sp.—Rather slender, moderately convex, shining and somewhat feebly micro-reticulate throughout, the punctures very fine, rather close and asperulate; coloration throughout as in the preceding; head moderate, the eyes not quite their own length from the base, the carinæ all but obsolete and not entire; antennæ nearly as in citata but with the outer joints more transverse, the last larger, pointed and decidedly longer than the two preceding, the second and third moderately elongate, subsimilar; prothorax shorter, strongly transverse, not quite as wide as the elytra and very much wider than the head, shining, parallel and rounded at the sides, not impressed; elytra less transverse, very much longer than the prothorax; abdomen nearly similar, the sixth tergite (♂) broadly, feebly arcuato-truncate and evenly, rather coarsely and strongly crenulate throughout; mesosternal process extending two-thirds the length of the coxæ, rather wide, gradually and sinuously narrowed to the rounded apex, which is separated by a considerable distance from the strongly angulate metasternum, the intervening ridge not much sunken and broadly convex; hind tarsi slender, the first four joints nearly equal, the first scarcely visibly shortet. Length 2.3 mm.; width 0.48 mm. New York (Catskill Mts.).
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Related to citata but abundantly distinct in its larger terminal joint of the antennæ, shorter, shining and unimpressed pronotum and other characters.

Resembles nympha but differs in its stouter form, shorter antennæ, with more transverse outer joints and relatively still longer eleventh and different second and third joints; also in its strong and entire infra-lateral carinæ, larger prothorax and elytra and narrower abdomen.