OCR Text |
Show 202 MR. MARTIN JACOBY ON N E W SPECIES [Mar. 4, OREPIDODERA (OHALCOIDES ?) ERICHSONI, sp. n. Greenish-aeneous, above metallic greenish-cupreous, antennae flavous; thorax convex, finely and closely punctured, the basal sulcus indistinct, the lateral grooves deep; elytra with deep basal depression, distinctly and regularly punctate-striate, tibiae more or less fulvous. Length 3 millim. Of rather broadly ovate and convex shape, the head impunctate, with the exception of a few fine punctures near the eyes, the latter with oblique grooves from the inner margin to the middle of the head, the frontal tubercles obsolete, the carina strongly raised, terminal joint of the palpi acute and slender ; the antennae rather long, flavous, the third joint very slightly shorter than the second, the fourth and following joints more elongate, terminal ones slightly thickened ; thorax transversely convex, the sides nearly straight, the anterior angles oblique, slightly thickened, the basal margin sinuate near the scutellum, rather broadly produced at the middle, the basal sulcus feeble at the middle, more deeply impressed at the sides, slightly sinuate, limited laterally by deep, somewhat curved, perpendicular grooves, the disc strongly convex, closely and finely punctured; scutellum small, blackish ; elytra scarcely wider at the base than the thorax, the basal portion rather strongly raised, bounded by a transverse depression, the disc convex, subcylindrical, finely and regularly punctate-striate, metallic green with coppery reflections ; below greenish-aeneous, distinctly punctured, the legs piceous, the tibiae obscure fulvous at the base, tarsi blackish, the first joint of the posterior tarsi as long as the following two joints together; pro-sternum rather broad ; coxal cavities closed. Hab. Peru. The single specimen of this species contained in m y collection does not quite agree with any of the genera allied to Crepidodera, on accountof the produced median lobe of the thorax, which gives the latter quite a different appearance from that of the other species; this lobe is not pointed but strongly rounded, and the species ought perhaps to be placed in a special genus, but this may be deferred until more similarly structured species turn up. CREPIDODERA MAGISTRALIS, sp. n. Rufous, the antennae (the basal joints excepted) and the tibiae and tarsi black ; thorax transverse, impunctate, with deep basal sulcus; elytra metallic greenish, very closely semi-punctate-striate. Length 7 millim. Head impunctate, frontal tubercles acute, carina short; antennae extending to about the middle of the elytra, black, the lower three joints fulvous, the third joint shorter than the fourth ; thorax about two-thirds as broad as long, the sides rounded, the anterior angles slightly thickened and produced, the basal sulcus deep and slightly sinuate, bounded at the sides by a perpendicular |