Page:Memoirs on the coleoptera (IA memoirsoncoleopt01case).pdf/23

Rh

Very distinct from bicariniceps in the formation of the sterna and abdomen; the infra-lateral carinæ of the head are similarly entire but are finer and not so elevated.

This is the largest Athetid known to me from North America and is very distinct from the two preceding. The basal joint of the hind tarsi is similarly elongate.



The following species agrees very well with subplana in all its structural characters, including nearly obsolete infra-lateral carinæ of the head, short basal joint of the hind tarsi and approximate middle coxæ, with very short metasternal projection, but the mesosternal process is noticeably longer. Granulata Mann., (Elytrusa Csy.) is closely allied but larger and with a notably larger head and still longer and stouter antennæ; I do not think that granulata can be the same as the European graminicola Grav.