OCR Text |
Show 570 MR. M. JACOBY ON N E W [Nov. 1, obsoletely depressed transversely below the base, rather strongly punctate-striate, the punctures much finer posteriorly, the disc violaceous, the extreme apex fulvous ; underside and legs fulvous; femora unarmed; claws bifid ; prosternum dilated posteriorly. This small species is principally distinguished by the colour of the antennae and that of the elytra; the varieties do not show any differences except in the colour of the upper surface; the unarmed femora do not agree with the definition of Rhembaslus, but neither this genus nor Ivongius are well defined by the author, who has said nothing about the sulcus at the sides above the eyes, nor does M . Lefevre mention this character in his diagnosis of the genus. On the other hand, Ivongius, which agrees in the unarmed femora with the present species, is described by von Harold as having the clypeus separated from the face, which is not the case in the insect described here. Ivongius antennarius, Har., agrees very nearly with it (to judge from a three-line description), but is described with a smooth thorax. R. pusillus, Har., seems to be another closely allied species, but differs in the colour of the antennae and of the head and thorax. RHEMBASTUS ANTENNATUS, n. Sp. Reddish fulvous; antennae flavous, the sixth, seventh, and apical two joints as well as the tarsi black ; thorax sparingly punctured ; elvtra finely and distantly punctate-striate. Length 1| line. Head impunctate, the eyes surrounded with a distinct sulcus, the vertex with a longitudinal groove, clypeus not separated from the face ; jaws black ; antennae extending to half the length of the elytra, flavous, the third and fourth joints equal, the sixth and seventh and apical two joints black, the latter distinctly thickened ; thorax one half broader than long, the sides straight, the surface sparingly and finely punctured at the disc, the sides impunctate; elytra convex, without basal depression, finely punctate-striate, more distinctly anteriorly than posteriorly, the shoulders with a deep depression within; femora dentate, tarsi black, claws bifid. Principally distinguished from other nearly similarly coloured species by the colour of the antennae. EURYDEMUS METALLICUS, 11. Sp. Obscure piceous, the antennae and legs fulvous ; above metallic greenish or cupreous; the head and thorax nearly impunctate, the elytra deeply punctate-striate, the interstices more or less longitudinally convex, femora dentate. Length If-2 lines. Of rather elongate and parallel shape ; the head metallic greenish with a few punctures at the vertex ; the eyes large, rather closely approached, their inner margin sinuate; clypeus transverse, fulvous, its surface rather depressed, its upper margin separated from the face by a narrow transverse groove; antennae long and slender, fulvous, the basal joint stained with piceous, the second joint half |