| OCR Text |
Show 1876.] MR. M. JACOBY ON NEW COLEOPTERA. 809 agrees in size, shape, and coloration above entirely with A. rufus, Lac., but differs in the following particulars : in rufus the entire underside and legs are testaceous, with the exception of a few black spots on the abdomen, while in dubiosus these parts are shining Ijlack, with the exception of the tibiae and tarsi, which are ferruginous ; in rufus the scutellum is of the same colour as the body, while in dubiosus it is entirely black ; and although this species may only be a variety of rufus, I find no mention made of it in Lacoi-daire's description. Two specimens from Mexico in m y collection. Family CLYTHRIN^E, Lac. Genus MEGALOSTOMIS, Lac. 4. MEGALOSTOMIS BASILARIS, sp. nov. Short, ovate, subdepressed, flavous, sparingly pubescent above, strongly beneath. Head black, pubescent, shining, closely punctate, striated near the eyes, leaving only a narrow space in the middle of the vertex smooth, two large depressions divided by a raised middle line in front of the eyes, the latter light-coloured. Antennae dentate from the fifth joint, reaching to the base of the thorax. Posterior angles of thorax indistinct, anterior ones produced, the sides widened from before the middle towards the base, rounded, the median lobe at the base largely rounded ; the entire surface closely punctured and covered with whitish pubescence, sparingly on the disk, closely near the sides ; two large red spots occupy almost the entire sides, but are partially covered with hairs, and therefore only plainly visible near the base, where the pubescence is less dense. Elytra a little wider at the base than the thorax, closely and confusedly punctate, a little finer near the apex, the punctures showing a tendency to arrange themselves in striae near the suture ; the whole surface sparingly covered with stiff whitish hair; exactly on the shoulder of each elytron is a round black spot, the extreme base of the elytra, as well as the sutural line, is also narrowly edged with black. Entire underside reddish, densely covered with white pubescence; femora and tarsi black ; tibiae testaceous. Length 4 lines. Hab. Peru. A single specimen in m y collection. 5. MEGALOSTOMIS AMAZONA, sp. nov. Ovate, of same shape as basilaris, light brownish above, finely pubescent, beneath thickly clothed with yellowish hair; head divided in the middle by a longitudinal raised line, closely punctured and pubescent, posterior margin of epistome dentate, anterior emarginate in middle ; jaws and antennae black, eyes brown ; thorax shaped exactly as in the preceding species, densely covered with golden yellow hair, which also extends to the scutellum ; elytra about two and a half times the length of the thorax, reddish brown, |
