Page:Memoirs on the coleoptera (IA memoirsoncoleopt01case).pdf/63

Rh differing greatly from the usual conformation in not being free, separated from the rather small but anteriorly projecting metasternum, with its apex narrowly rounded, by a moderate undepressed interval, in which the longitudinal ridge is narrowly convex; hind tarsi slender, the basal joint much longer than the second. This will probably prove to be a true genus.

A very clearly defined species, to be readily known by its coloration, slender form, oval head and short elytra.

This species is allied to the preceding but differs in its larger prothorax, less abbreviated elytra and longer antennæ.

The following species is slightly aberrant in its shorter abdominal segments and minute size; but the head and tarsi are similar, the sterna, from what can be seen in the single type, homologous, and the antennæ of similar organization though shorter, with the second and third joints much more unequal: