OCR Text |
Show 548 MR. M. JACOBY ON THE [May 18, Length 3^-4 lines. d1. Head remotely and strongly punctured; the clypeus separated from the face by a strongly rugose groove, its surface more finely punctured; labrum, mandibles, and palpi black; antennae extending beyond the middle of the elytra, robust, black, the basal joint more or less metallic, terminal joints strongly widened; thorax more than twice as broad as long, the sides but slightly rounded, narrowly margined, the surface subremotely impressed with large round punctures, which are much more separated near the base, the interstices smooth; scutellum with a few fine punctures ; elytra without basal depression, the shoulders rather prominent, the punctures finer than those of the thorax and arranged in somewhat irregular, not very closely approached rows, they get still finer towards the apex, the interstices slightly wrinkled here and there below the shoulders ; underside scarcely pubescent or punctured, coloured like the upper surface as well as the legs ; the anterior femora with a more or less distinct tooth at the middle. Hah. West Africa, Cameroons. This Colasposoma is one of those in which the thorax is strongly and not closely punctured, the opposite being the case in many of the African representatives of this genus ; the colour is very variable, as is so often the case in these insects, but the black antennae, labrum. and palpi seem constant; there seems scarcely any difference in regard to the elytral punctuation of tbe two sexes. C. abdomlnale, Baly, is a closely allied species, but differs principally in the colour of the abdomen. I have received most the specimens before m e from Dr. Kraatz, w h o informs m e that they were obtained by Herr Conradt. COLASPOSOMA FOVEATUM, n. sp. Dark greenish-aeneous, pubescent above, the labrum and the antennae fulvous; thorax strongly and subremotely punctured ; elytra with deep transverse sub-basal depression, finely punctured, the sides transversely rugose. Length 3 lines. Head finely longitudinally strigose at the sides of the vertex, sparingly pubescent; the clypeus not distinctly separated from the face ; labrum fulvous ; antennae slender, filiform, entirely fulvous ; thorax nearly three times broader than long, the sides rounded, the disc subremotely and strongly punctured, the punctures round, the interstices clothed with whitish pubescence, the middle with a narrow, smooth space ; scutellum broader than long; elytra with a deep transverse fovea below the shoulders, very finely punctured in irregular rows, clothed with rather long silvery pubescence, the interstices at the sides transversely rugose ; underside and legs aeneous with a slight purplish gloss, finely pubescent. Hab. Delagoa Bay. There are three specimens of this species (probably all females) in m y collection; they are closely allied to C. pubeseens, Lefev., |