OCR Text |
Show 540 MR. M. JACOBY ON T H E [May 18, colour, and the general shape of the insect is more elongate and cylindrical. EHEMBASTUS GERSTAEKERI, n. sp. Bluish black, the basal joints of the antennae and the legs fulvous, above metallic dark blue; thorax closely and finely punctured ; elytra strongly punctate-striate, the interstices slightly convex. Length 1^ line. Head with a very few fine punctures at the vertex and a central longitudinal ridge; eyes with a narrow sulcus near the inner margin; the clypeus separated from the face by a semicircular groove, with a few punctures, its anterior margin fulvous ; palpi slender, fulvous ; antennae rather long, extending below the middle of the elytra, the six or seven lower joints fulvous, the others fuscous, basal joint short and thick, the second scarcely one-half shorter than the third, the following joints more elongate ; thorax nearly twice as broad as long, the sides straight and obliquely narrowed in front, the surface impressed with distinct round punctures, not very closely and irregularly placed, the sides nearly smooth ; elytra strongly punctate-striate, the punctures closely placed, the interstices slightly convex, broad, impunctate, the shoulders prominent : underside blackish, the breast with a bluish gloss; legs reddish fulvous, the femora with a minute tooth, tarsi obscure piceous. Hah. Ashanti. Larger than R. pusillus, Har., the thorax much more strongly punctured, and the punctuation of the elytra distinct to the apex. R. punctato-sulcatus, Fairm., is larger still (5 millim.), the underside is described as rufous, and the elytral punctuation obsolete posteriorly. EHEMBASTUS APICICORNIS, n. sp. Oblong-ovate; below black, antennae (the last joint excepted) and the legs fulvous ; above metallic dark green or aeneous ; thorax closely and distinctly punctured; elytra strongly punctate-striate, the interstices convex at the sides. Fern. Elytra with an acutely raised sharp costa from the shoulder to the apex. Length f line. Head remotely but distinctly punctured, the sides forming a ridge or narrow groove at the inner margin of the eyes, clypeus not separated from the face ; antennae two-thirds the length of the body, fulvous, the last joint black, the second joint thickened like the first and but little shorter, third and fourth joints slender, equal, terminal joints slightly thickened, the last ovately widened; thorax one-half broader than long, subcylindrical, the sides straight, gradually narrowed in front, the basal margin broadly rounded and produced at the middle, the surface closely and rather strongly punctured, the punctures crowded at the sides; scutellum not |