OCR Text |
Show 812 MR M. JACOBY ON NEW COLEOPTERA. [Dec. 5, Hab. Amazons. The peculiar olive-green colour, as well as the small size and the position of the tubercles on the thorax, will distinguish this species at first sight from others. 10. CHLAMYS PALLIDA, sp. nov. Ovate, narrowed in the middle, above pale testaceous mixed with brown. Head testaceous, with the upper portion of a darker brown closely and rather deeply punctate; flat, without any depressions ; apex of jaws black, labrum brown shining ; antennae entirely ferruginous brown. Thorax mounted at its posterior half by a rather high elevation of a triangular shape very nearly of the same form as in C. bartletti, but divided by a wider channel, the edges of which are strongly sinuate-rugose; a patch on each side below the elevation, as well as seven small spots arranged in a half-circle in the middle of the thorax, dark brown ; the whole surface deeply pitted with brownish punctures , nearly the entire posterior margin dentate, of a black colour; scutellum pale testaceous, with acute posterior angles, impunctate. Elytra deeply punctate, confused-reticulate at their posterior half, the punctures from the base to the middle of a deep brown, from there of a lighter colour; a distinct costa or ridge runs from the base in a curved line towards the apex, not quite reaching the latter, sending off a short branch from the third part of its length towards the base between the shoulder and the first ridge ; another short elevation exists close to and a little beneath the scutellum ; the entire apical region punctate-reticulate, and the sutural margin dentate nearly through its entire length. Body beneath of the same colour as the elytra; a rounded spot of a ferruginous colour is situated on the abdomen close to the margin of the elytra, while the legs in their middle also bear a patch of the same colour, which occupies the tarsi and claws entirely ; the whole under-surface deeply punctured. Length 3 lines. Hab. Amazons. In m y collection. 11. CHLAMYS EXCAVATA, sp. nov. Oblong, subcylindrical, narrowed behind, above entirely ferruginous, below testaceous ; head deeply punctate, the punctures of a more or less dark brown colour, labrum fulvous shining, jaws black; basal joints of the antennae ferruginous, the rest fuscous; thorax raised gradually to a hump-like elevation of a rounded shape, the top of which is divided by a shallow depression, the entire surface closely rugose-punctate, the punctures a little less crowded near the sides ; scutellum bisinuate, smooth. Elytra with an excavated space of a dark fuscous colour reaching from the base near the scutellum to nearly the middle of their disk, the commencement and the end of which is marked by a short pointed tubercle ; exactlv in the middle of each elytron is another fovea of an oblique direction towards the shoulders ; the entire surface confusely punctate-rugose, |