OCR Text |
Show 254 MR. M. JACOBY ON PHYTOPHAGOUS COLEOPTERA [Mar. 6, joints equal, rather short, terminal joints rather thick ; thorax more than twice as broad as long, narrowed in front, the sides feebly rounded, the surface remotely and strongly punctured; elytra widened towards the middle, the punctures about the same size as those on the thorax and arranged in irregular, very closely approached rows, distinct to the apex; below and the legs coloured like the upper surface ; the posterior tibiae strongly widened at the apex, with their edges serrate, the emarginate spur at the apex fulvous, as well as the claws. Hab. Nairobi, 5500 ft., Kikuyu Forest, Brit. East Africa (Mr. Mackinder). (Type in the Oxford M u s . Collection.) Of rather more robust appearance than D. trimeni Baly, and much more strongly puuctured than that species. Differing from D. intermedia Baly in the metallic green legs and the black antennae. CH.ETOCNEMA SUBATERRIMA, Sp. n. Black, the antennae, the anterior and posterior tibiae and tarsi flavous ; head impunctate, deeply foveolate near the eyes ; thorax extremely finely and closely punctured ; elytra deeply punctate-striate, the interstices longitudinally convex. Length 2 millim. Head entirely impunctate, blackish, opaque, with a deep longitudinal fovea near the eyes ; clypeus separated from the face by a deep groove, very broad, nearly subquadrate, its lower portion furnished with some grey hairs ; antennae extending to the middle of the elytra, entirely flavous, the third to the sixth joints slender, the following joints slightly thickened but elongate, basal joint about one-half longer than the second; thorax about one-half broader than long, the sides slightly rounded, the anterior angles strongly thickened, the surface very minutely, evenly, and closely punctured, the basal margin not accompanied by an impressed line, but with some large punctures at each side; scutellum extremely short, transverse; elytra very convex, subcylindrical, strongly narrowed and pointed posteriorly, the punctures deep, closely placed and regular, distinct to the apex, the interstices convex, especially so near the sides and apex, impunctate, the fourth, fifth, and sixth interstices shortened and joined at the end, from thence to the apex continued into a single costa; the anterior legs flavous, as well as the rest of the tibiae and tarsi; the femora blackish, the posterior ones very greatly incrassate : underside scarcely punctured ; prosternum rugose-punctate. Hab. Malvern, Natal (67. Marshall). This is one of the few species which show no trace of a metallic gloss, being nearly entirely black; the very convex, posteriorly strongly pointed elytra and their costate interstices, together with the entirely impunctate head, will assist in the recognition of the species. |