OCR Text |
Show 1887.] PHYTOPHAGOUS COLEOPTERA OF CEYLON. 97 labrum piceous ; palpi long aud slender. Antennas inserted close to the inner margin of the eyes, scarcely extending in length to the base of the thorax, the second joint short and thickened, the third more slender and longer, the rest gradually widened and transversely shaped; black, the four basal joints fulvous. Thorax at least three times broader than long, pale fulvous, the sides straight and forming a distinct angle before the middle, the posterior margin evenly and moderately rounded ; the surface without depressions, smooth and nearly impunctate. Scutellum broadly ovate, black. Elytra convex, subcylindrical, closely and distinctly punctured, fulvous, each elytron with a broad black band commencing at the middle of the base and extending below the middle, the outer margin deeply concave at the middle. Legs fulvous, the posterior femora piceous as well as the sides of the breast. The elytral band is slightly widened at the apex, and approaches gradually towards the suture without, however, touching the latter. TEGYRIUS (gen. nov. Halticinorum). Ovate, subcylindrical. Antennse slender, filiform, the third joint slightly longer than the second. Thorax transversely subquadrate, the surface transversely but obsoletely grooved near the base. Elytra convex, broader than the thorax, without depressions, finely and semiregularly punctured. Posterior femora strongly incrassate, their tibiae dilated and longitudinally channelled, their apices with a small spine ; the first joint of the posterior tarsi as long as the three following joints together. Claws appendiculate. Prosternum broad, subquadrate. Mesosternum broader than long, its base concave-emarginate. Anterior coxal cavities open. Tegyrius has the general shape and appearance of Philogeus, but differs in the filiform antennse, the much longer metatarsus of the posterior tarsi, and in the appendiculate, not bifid, claws. From Longitarsus the genus may be distinguished by the transverse sinuate groove of the thorax and the broad prosternum. TEGYRIUS METALLICUS, sp. nov. Black; antennae, legs, the posterior femora excepted, testaceous ; above metallic greenish aeneous ; head and thorax impunctate; elytra very finely semipunctate-striate. Length 1 line. Head impunctate; the frontal tubercles and the carina very narrow and rather indistinct. Antennse nearly as long as the body, the fourth joint one half longer than the third, the second thickened. Thorax scarcely twice as broad as long, the sides straight, the anterior angles obliquely truncate and slightly thickened, the basilar transverse groove sinuate, not very deep and not extending to the sides • the disk entirely impunctate. Elytra convex, subcylindrical, without basal depression, the shoulders not prominent, the apices rounded ; surface very closely and minutely punctured, the punctuation arranged in semiregular rows; the anterior tarsi, the posterior femora and the inner side of the posterior tibise blackish. ' PROC. ZOOL. Soc-1887, No. VTT. 7 |