| OCR Text |
Show 1887.] PHYTOPHAGOUS COLEOPTERA OF CEYLON. 91 punctured ; elytra regularly punctate-striate, the interstices scarcely raised. Length £ line. Rather smaller and narrower than the preceding species; the thorax twice as broad as long, the sides slightly narrowed towards the base, nearly straight, the surface extremely closely and distinctly punctured, the basal groove distinct and placed close to the posterior margin ; elytra rather paler than the thorax, the punctures larger and arranged in regular rows ; all the femora thickened, the posterior ones scarcely more incrassate than the others. SEBAETHE SUTURALIS, sp. nov. Testaceous, terminal joints of the antennae fuscous ; head and thorax impunctate ; elytra very finely and closely punctured, a more or less distinct sutural stripe, narrowed behind, piceous. Length 1-|-2 lines. Head not longer than broad, impunctate ; the frontal tubercles strongly raised, transverse and nearly contiguous ; carina short but distinct. Antennae closely approached, two thirds the length of the body, the first three joints pale testaceous, the rest fuscous, the third joint one half longer than the second, but slightly shorter than the fourth joint. Thorax narrow, three times as broad as long, the sides slightly rounded and narrowly margined, the anterior angles thickened, the surface somewhat convex and entirely impunctate. Scutellum rather broad, impunctate. Elytra slightly widened towards the middle, their apices rounded, the sides with a narrow margin ; the disk very finely and moderately closely punctured, obscure testaceous like the rest of the body, with a narrow posteriorly constricted sutural piceous stripe not extending to the apices; the posterior tibiae longitudinally channelled ; the first joint of the posterior tarsi as long as the two following joints together. Dikoya. Smaller than S. pallida, Jac, the sides of the thorax less strongly rounded, and the surface without depressions ; further distinguished by the sutural stripe; this latter is, however, in some specimens scarcely visible, in others strongly marked. The colour of the antennae and that of the tarsi is also subject to variation, being sometimes obscure piceous and in some instances testaceous ; the impunctate thorax, the coloration of the elytra, in connection with the size, will help to separate 8. suturalis from its allies. SEBAETHE CEYLONENSIS, sp. nov. Oblong-ovate, obscure testaceous ; thorax impunctate, the sides strongly rounded ; elytra extremely closely and finely punctured. Length 2|-3 lines. Head impunctate ; the eyes very large, divided by a space not broader than their diameter; the frontal tubercles broadly trigonate, bounded behind by a deep groove. Antennse two thirds the length of the body, the joints slender and elongate, with the exception of the second, of nearly equal length. Thorax nearly three times as |
