| OCR Text |
Show 112 MR. M. JACOBY ON THE [Feb. 1, 3. Elytra with an oblong fovea below the scutellum, the anterior part of which is tuberculiform. 2 • Elytra simple. Length 2 lines. Head impunctate ; palpi robust, the terminal joint thickened. Antennse filiform, entirely flavous, the third joint slightly longer than the following ones. Thorax transverse, the sides straight at the base, slightly rounded before the middle, the anterior and tbe posterior margins perfectly straight, as well as the transverse groove at the middle of the disk, the latter impunctate. Scutellum flavous. Elytra slightly widened posteriorly, the punctuation arranged in rows, which are more distinct anteriorly and at the sides than towards the apices ; the latter with a more or less distinct flavous margin or spot, the rest of the surface black, shining. Underside and legs flavous; elytral epipleurae continued below the middle. Apical abdominal segment of the male trilobate, the intermediate lobe slightly prolonged. Balangoda. This species will enter the present genus, established by myself, on account of the prolonged elytral epipleurae and the punctate-striate elytra. The male has the elytra deeply impressed below the scutellum (as is the case in P. buquetti) ; the anterior portion of this depression is raised in the shape of two tubercles. In P. buquetti these latter are placed within the fovea. The general aspect of P. bicolor is that of a species of Aulacophora. LUPERUS NIGROMARGINATUS, Sp. nOV. Black ; thorax obsoletely impressed, impunctate ; elytra extremely finely punctured, pale yellowish white, the margins narrowly black. Var. a. Femora pale testaceous. Var. b. Elytra black, the disk obsoletely paler. Length If-2 lines. Head impunctate, transversely grooved between the eyes, the frontal tubercles scarcely divided. Antennse black, nearly as long as the body, the third joint more than twice as long as the second. Thorax about one half broader than long, the sides straight, the posterior margin slightly rounded and sinuate; surface impunctate or extremely finely punctured, with a depression at each side. Scutellum black. Elytra slightly more distinctly punctured than the thorax, nearly white, the sutural and lateral margins narrowly black. Tibiae mucronate ; the first joint of the posterior tarsi longer than the three following joints together. The anterior coxal cavities open. L. nigromarginatus seems subject to a good deal of variation in regard to colour; and it is probable that the form with pale elytra margined with black is the normal one, as even in the black specimens a faint paler disk of the elytra indicates the white portion of the type. In one specimen the rare instance of part colouring occurs, the left elytron being black, and the right one white with the black lateral margin. |
