OCR Text |
Show 272 MR. G. A. K. MARSHALL ON THE [Mar. 20, 37. SCIOBIUS ARROWI, sp. nov. (Plate XIX. fig. 10.) Long. 6f, lat. 3|- m m . Head transverse, black, coriaceous, with dense brown scaling; forehead scarcely impressed ; eyes moderately prominent. Rostrum distinctly longer than broad, sides subparallel, gena? scarcely dilated; upper surface deeply impressed, with three narrow carinae, the outer pair parallel to near apex, thence divergent, very finely aciculate, and with dense brown scaling. Antennce long and slender, piceous, with pale pubescence ; scape strongly curved, slender, subcompressed and abruptly clavate; first joint of the funicle longer than the third. Prothorax rather broader than long, truncate at base and apex, the latter a little narrower than the former, sides slightly rounded, broadest about middle; upper surface convex, with depressed and rather distant granules, except along the central line which is smooth and coriaceous ; colour black, the central portion almost bare, the sides with dense brown scaling which almost conceals the granules. Elytra broadly ovate, acuminate posteriorly, truncate at base, shoulders oblique, sides strongly rounded, broadest before middle; upper surface with the anterior portion of the disk quite flat, but rising posteriorly to beyond middle, the posterior declivity being much longer and more steep than usual, with fine stria? containing rows of shallow punctures separated by minute granules, the intervals almost plane, very finely aciculate, with a few scattered minute granules, mostly hidden by the scaling and more noticeable on the declivity ; colour black with brown scaling on the disk, but paler towards the sides and apex, and with a conspicuous pale common V-shaped mark having its apex on the summit of the declivity, the intervals with distant pale setrc, which are longer and suberect on the disk, and shorter and depressed on the declivity. Legs slender, piceous, with uniform fine pale scaling, the anterior tibia? slightly incurved at the apex. T Y P E in the British Museum. N A T A L [coll. Pascoe]. I have seen only the type of this species, which was erroneously referred to Phlyctinus callosus Boh. by Pascoe. The shape of the elytra is unusual and gives the insect a distinctive facies. The specimen is probably a female. 38. SCIOBIUS IIORNI, sp. nov. (Plate XIX. fig. 11.) Long. 71-8, lat. 3-34 m m . Head rather shorter than its width at base, black, with distinct close punctuation and fine grey pubescence* the impressed line dividing it from the rostrum very sharply angulate; eyes moderately prominent. Rostrum distinctly longer than broad, its sides subparallel, the gena? only slightly and roundly dilated in both sexes; upper surface slightly impressed, tricarinate, the carinae straight and parallel, the punctuation and pubescence as on the head, the central carina bare and impunctate. Antennce lorn? |