in zoology, a genus of insects belonging to the order of coleoptera. The feelers are setaceous; the elytra are shorter and narrower than the wings; the tail is simple. There are 11 species, chiefly distinguished by the size and figure of their elytra. Barbut says, "Its head is black, eyes are large and prominent, jaws are of a dark brown. The antennæ placed on the top of the head between the eyes have their first articulation long and raised upright, the rest bent and turned aside. The antennæ vary as to length and colour. In individuals whose thorax is yellow, they are brown, and equal only to two-thirds of the body in length. On the contrary, in those whose thorax is black, they are likewise black, and somewhat longer than the body. The thorax is margined; in some it is yellow and longer; in others it is black, shorter, and edged only with a little yellow. The elytra are blackish, something clearer in the middle, and terminating in a lemon coloured spot. The wings are rather black, something longer than the body, exceed the clytra by one-third, and are crossed one over the other. In those that have their thorax yellow, the legs and under part of the belly are so likewise. In individuals with a black thorax, the legs are black as well as the belly, which has only a little yellow on the sides. I suspect the latter to be the males. The larva is as yet unknown."