OCR Text |
Show 1879.J PHYTOPHAGOUS COLEOPTERA. 777 Lac, equally different by its coloration and the deep punctures of the elytra; while L. hypochryseum, Baly, is devoid of the metallic elytral band. Genus CHALCOPLACIS, Chevr. 7. C H A L C O P L A C I S INSTABILIS, sp. nov. Subrotundate-ovate. Above cupreous or dark blue, shining, head cupreous or violaceous blue ; antennse black, their six basal joints fulvous ; thorax finely, elytra more deeply punctate; below and the legs black. Length 2 lines. Hab. Zapote, Guatemala. Head rather deeply punctured, lower part of face more closely punctate than the vertex, clypeus not separated ; jaws very prominent ; antennse subfiliform, third and fourth joints of equal length, seventh and the following joints thickened, black, six basal joints fulvous, the first stained with piceous above. Thorax transversely convex, narrowed from base to apex, anterior angles acute ; surface minutely punctured. Scutellum broad, impunctate. Elytra slightly wider at the base than the thorax, convex, the extreme apex rather acutely produced, surface much more strongly punctured than the thorax, the puncturing arranged in irregular rows, the sutural margin accompanied at its posterior third by an impressed line. The colour varying from purplish cupreous to dark greenish blue. All the latter-coloured specimens have the head igneous or cupreous, while the reverse is the case with the cupreous ones, whose head is violaceous. Underside black, legs with a coppery hue. Genus NODA, Chapuis. 8. N O D A TASMANICA, sp. nov. Oblong-ovate. iEneous ; antennse piceous, their base and the legs entirely fulvous; head and thorax coarsely punctate, elytra each with four smooth longitudinal costse, their interstices deeply punctate. Length 2 lines. Hab. Tasmania. Head with a deep longitudinal groove in middle, deeply and closely punctured ; labrum fulvous, its base piceous ; palpi testaceous, their apex as well as the mandibles piceous; antennse about half the length of the body, second and third joints short, of nearly equal length, the seventh to the eleventh joint thickened and cylindrical, piceous or black, five or six basal joints fulvous. Thorax transversely convex, its sides rounded and widened in the middle, posterior margin broadly produced in middle, surface deeply and closely punctured, interrupted here and there by some smooth semielevated spaces, brownish or greenish seneous. Scutellum as broad as long, in one specimen broader than long, impunctate. Elytra scarcely wider at the base than the thorax, about three times as long, punctured like the thorax the punctures sometimes confluent and interrupted by four 50* |