Page:Memoirs on the coleoptera (IA memoirsoncoleopt01case).pdf/57

Rh

The rather depressed form, very fine sculpture and swollen tempora, which however are not at all as in Amischa, will render the identification of this species comparatively easy. The abdomen differs from anything in the preceding subgenus in being evenly though not densely asperulato-punctulate throughout, and the sixth ventral segment is much narrower.



Body very small in size, the eyes less developed than in more typical forms of Atheta, the middle coxæ well separated, the long ridge between the mesosternum and short angulate metasternum scarcely at all depressed and broadly convex, the mesosternal process short, with its apex very broad and truncate, nearly as in Stethusa. Additional characters of subgeneric import are mentioned in the course of the following descriptions. The species are rather numerous and appear to associate with ants but probably as mere casual guests:

Prof. Wickham, who sent me my only example of this distinct species, has labeled it “Nest 3,” but without further note. T. L. Casey, Mem. Col. I, Sept. 1910.