OCR Text |
Show 1878.] MR. M. JACOBY O N PHYTOPHAGOUS COLEOPTERA. 983 constricted behind the middle, smooth, impunctate, testaceous ; scutellum subquadrate, black. Elytra strongly and very regularly punctate-striate, the ninth stria entire, the interstices slightly raised towards the apex ; a short longitudinal sutural stripe at the base, another of equal length covering the shoulder and pointed posteriorly, where both stripes finish a little before the middle, a small round spot between these stripes at their end, and another spot at a little distance from the apex of each elytron, shining violaceous black. Abdomen and the legs testaceous. Hab. Volcano of Irazu, Costa Rica. Collected by Mr. Rogers. This species bears a close resemblance to L. bifida, Oliv., and L. semisepta, Lac, in coloration, but is distinguished from the first by the elytra having two spots instead of one, the uniformly coloured antennse and the smooth thorax, while the same differences distinguish it from the latter species. I have seen about a dozen specimens, all of which agree exactly with each other in having the light-coloured antennse and legs and the two spots on each elytron. 2. MASTOSTETHUS SALVINI, sp. nov. Elongate, parallel, testaceous, the sides of the breast and the upper part of the head shining black. Thorax rufous, nitidous. Elytra light testaceous, a large semiquadrate patch from the base to the middle on each, and a broad transverse fascia behind the middle, common to both elytra, black. Length 4\ lines. Head distinctly punctured round the eyes, the other part smooth and shining, lower part of face flavous, upper part black; antennse reaching to the base of the thorax, testaceous, the first to the eighth joint above stained with black, but diminishing towards the apex, and entirely disappearing from the ninth joint. Thorax narrowed from the base to the apex ; surface very minutely and widely punctured, impressed near the hinder angles with a distinct fovea; scutellum black. Elytra subdepressed above, narrowed towards the apex, surface strongly but not very closely punctured ; pale testaceous, a large spot on each elytron from the base to the middle, narrowed towards the suture, and a transverse fascia (neither of which extends quite to the lateral margin), the latter only separated from the former by a narrow interval, with the posterior margin irregular, black ; the apex of the elytra are of the ground-colour to about the same extent as the width of the transverse band. The underside, with the exception of the sides of the breast, the dorsal surface of the four anterior femora, and all the tibia?, which are black, testaceous ; hinder femora and inner side of tibia? of the same colour, the former with a distinct tooth near the apex. Hab. Cache, Costa Rica. Collected by Mr. Rogers. 3. LAMPROSOMA CHAPUISI, sp. nov. Ovate, convex, dark violaceous ; head, lateral and anterior margins 64* |