OCR Text |
Show 1881.] PHYTOPHAGOUS COLEOPTERA. 449 Length 3 lines. Hab. Java. Var. Elytra bluish black ; a transverse band before the middle, deeply 3-dentate at its anterior margin, flavous. Head elongate, scarcely narrowed towards the apex; space between the eyes obsoletely, transversely, and longitudinally grooved; eyes rounded, entire ; vertex and entire face impunctate, shining fulvous ; anterior margin of epistome emarginate. Antennse as long as the body, fulvous, first joint club-shaped, second joint very short, moni-liform, third elongate, subquadrate, greatly dilated and deeply foveolate at its outer surface, fourth to the eleventh gradually lengthened, cylindrical and elongate, apex with a short but distinct twelfth joint. Thorax nearly square-shaped, sides widened towards the middle, but constricted near the base, surface with two small round fovese behind the middle, finely punctured, fulvous. Scutellum black. Elytra distinctly transversely depressed below the base, more deeply punctured than the thorax, with indistinct traces of longitudinal costse, metallic bluish black; the extreme base, anterior lateral and sutural margins, and a large round apical spot of each elytron fulvous. Below black, anterior half of the elytral epipleurse fulvous; femora and part of the tarsi flavous, first joint as long as the two following united. The variety does not differ in any way except that of colour. Genus CHTHONEIS, Baly. 20. C H T H O N E I S MARGINICOLLIS, sp. nov. Elongate, slightly widened behind. Black, sides of the thorax and the femora testaceous; elytra dark violaceous, extreme lateral margins anteriorly flavous. Var. Elytra entirely unicolorous. Length 4 lines. Hab. Peru. Head impunctate, deeply transversely grooved, space immediately above the antennse with two distinct callosities ; clypeus wedge-shaped, its anterior margin straight. Antennse incomplete, joints second and third very small; the following joints elongate, dilated and compressed, the fourth joint the longest. Thorax nearly three times as broad as long, posterior margin rounded and produced in the middle, lateral margin much widened at the middle, distinctly mar-ginate, anterior angles slightly thickened, rounded and oblique; surface very minutely punctured, 3-foveolate (one at each side and one near the middle of the base), black, the sides broadly flavous. Scutellum large, black, impunctate. Elytra rather convex, closely and distinctly punctured, dark violaceous, extreme lateral margin from the base to behind the middle flavous. Underside and legs black, femora flavous ; claws rather largely appendiculate. Two specimens are contained in m y collection. Although this species is more robust and of larger size than the others belonging to this genus, the general characters agree well |