OCR Text |
Show 1906.] COLEOPTERA OF THE GENUS SCIOBIUS. 267 not elevated, narrowed from middle to apex, jointly subacuminate at apex, five times as long as the thorax; upper surface strongly convex, moderately declivous behind, sub-sulcate, the sulci with obsolete punctures ; all the intervals elevated, convex, and with distinct remote tubercles posteriorly; entirely ferruginous, variegated with grey and fuscous scaling. Body obsoletely punctulate beneath, piceous, with sparse grey scaling. Legs elongate, stout, ferruginous, with sparse grey scaling and pubescence; femora moderately clavate, unarmed; tibia? straight; tarsi moderately dilated, spongy and grey beneath. " C A P E O F G O O D H O P E (Drege)." T Y P E missing ; in Drege's collection. This description is a translation of that given by Boheman, as I have failed to recognise the insect among the species which I have examined. *30. SCIOBIUS ANGUSTUS, sp. nov. (Plate XIX. fig. 2.) Long. 6, lat. 2± m m . Head moderately transverse, slightly convex, evenly coriaceous and with sparse pale scaling which is denser round the eyes ; forehead scarcely impressed in middle ; eyes convex but not prominent. Rostrum longer than broad, basal margin obtusely angulate, sides parallel to near apex, gena? rounded and slightly dilated ; upper surface plane, rugulose, tricarinate, the outer carina? straight and parallel throughout. Antennce elongate, but comparatively stout, piceous, with thin grey pubescence ; scape compressed, moderately curved and gradually thickened to apex; funicle with the first and third joints equal. Prothorax moderately transverse, truncate at base and apex, sides straight from base to well beyond middle, thence rapidly narrowed to apex ; upper surface somewhat convex, coriaceous, sparsely set with small granules and without distinct impressions ; colour black, with fairly dense greenish-grey scaling. Elytra elongato-ovate, truncate at base, shoulders subrectangular, scarcely prominent but with a faint humeral tubercle, sides gently rounded, broadest about middle ; upper surface convex, with rather shallow stria? containing rows of strong punctures separated by small granules, the intervals rather narrow, of equal width, coriaceous and devoid of granules; colour black, fairly densely covered with fine greenish-grey scaling ; in perfect specimens this is probably uniform throughout, but in the type the discal portion is somewhat abraded. Legs moderate, piceous, with thin grey scaling; anterior tibiae straight externally, the first tarsal joint elongate, longer than either of the next two. TYPE O* m the South African Museum. T R A N S V A A L : Shilouvane (Rev. II. Junod). A rather small, very narrow species belonging to the group represented by marginatus Fahr., from which latter it may be distinguished by the more prominent central carina of the rostrum, the fine and sparse granulation of the thorax, and the narrower and more convex elytra, as well as by the very different coloration. |