Page:Memoirs on the coleoptera (IA memoirsoncoleopt01case).pdf/26

18 short metasternal projection by a notably extended interval, the coxæ contiguous, the first four joints of the hind tarsi subequal, the infra-lateral cephalic carinæ fine but subentire, the eyes moderate and the antennæ are strongly incrassate, with transverse penultimate joints. The type is the following:

This species is chiefly remarkable in its very exceptional sexual modifications of the head, which, in the male, is opaque by reason of extremely small strong reticulation, rather flattened above and feebly impressed along the median line; in the female it is more convex, even, shining and very much more feebly and less minutely micro-reticulate.



The species here assigned to typical Atheta, although exhibiting much diversity of structure, agree tolerably well among themselves in the small or very moderate size of the body, in having the abdomen parallel or virtually so, the eyes moderate in size, generally at their own length from the base, the antennæ moderate in length and gradually incrassate, the mesosternal process acute, the metasternal short, the coxæ approximate and the basal joints of the hind tarsi subequal among themselves, although the basal joint is occasionally a little shorter or longer than the second. In the descriptions the infra-lateral carinæ of the head are alluded to simply as carinæ.