Page:Memoirs on the coleoptera (IA memoirsoncoleopt01case).pdf/31

Rh

This remarkable species can be known at once by the elytra of the male, each having a distinct umboniform tubercle just before the middle and at inner third; the absence of cephalic carinæ and rather wide truncate mesosternal process are also conspicuous distinctive characters.

The elongate form, shining integuments, rather small and transversely oval prothorax, feeble male sexual characters, thick and incrassate antennæ and sternal structure will render the identification of this species comparatively easy.

The following thirteen species are small forms, apparently inhabiting fungi, having pale elytra and legs, the abdomen more of less evidently paler basally, the antennæ moderately stout and subparallel except basally, or, at most, very moderately incrassate, and with the sixth tergite of the male auriculate at the sides of the apex, with the intervening edge in no case crenulate. These are