OCR Text |
Show 1906.] COLEOPTERA OF THE GENUS SCIOBIUS. 273 • and moderately slender, piceous and with fine grey pubescence; the scape not much curved, rather compressed and gradually clavate; the first joint of the funicle thickened, as long as the third. Prothorax rather transverse, gently rounded at the base, narrower and truncate at the apex, sides gradually dilated from base to beyond middle, thence rapidly narrowed to apex; upper surface convex, closely set with low rounded granules, but with a more or less distinct smooth central line; colour black, the granules bare, the interstices with fine grey pubescence which is denser at the sides. Elytra elongato-ovate, scarcely broader in the 2 > jointly sinuate at base and a little broader than the prothorax, shoulders very oblique, sides not much rounded, broadest about middle; upper surface convex, with distinct stria?, which appear to contain rows of deep punctures or rows of small distant granules according to the incidence of the light; the intervals convex, the first, third, and fifth more raised and rather narrower than the others, especially near the base, impunctate and without granules; colour black, with very fine short recumbent grey pubescence. Legs moderately long and slender, black with fine pale pubescence ; the anterior tibia? in the o* dilated internally in the middle and with a very deep sinuation near the apex, the first joint of the tarsi broad but scarcely as long as the next two together; the anterior tibia? much less sinuate in the 2 • TYPE, S in the British Museum, 2 in the Oxford Museum. N A T A L : Oharlestown. Nearly allied to S. pollinosus Fahr., but it is a larger and narrower insect. It differs also in the deeper and closer punctuation of the head, the broader and more gradually dilated scape, the shorter third joint of the funicle, the slight elevation of the alternate intervals of the elytra, the greater sinuation of the anterior tibia? in the S> and finally the first joint of the tarsus is less elongate. The only three specimens which I have seen were kindly sent me by Dr. Walther Horn, of Berlin. Unfortunately they are evidently much rubbed, and probably in fresh examples the pubescence would bear some powdering similar to that of pollinosus. 39. SCIOBIUS WAIILBERGI Boh. S. wahlhergi Boh. Schijn. Gen. Cure. viii. Mantissa, p 438 (1845). Long. 6-84, lat. 3-4 m m. Head moderately transverse, black, with fine close punctuation which is often more rugose near the eyes, and densely covered with metallic green scaling, there being usually three subdenuded lines corresponding with the rostral carina?; forehead scarcely impressed ; eyes not at all prominent. Rostrum distinctly longer than broad, its sides subparallel to beyond middle, the gena? only slightly and roundh dilated in both sexes ; upper surface shallowly impressed, with three distinct narrow and evenly raised carina? the |