OCR Text |
Show 424 MR. MARTIN JACOBY ON NEAV SPECIES [Nov. 28, O ed io n y ch is p a l lesc en s, sp. n . Pale flavous, the antennae (the basal joints excepted), the knees, and the anterior and intermediate tibife and tarsi black ; thorax impunctate ; elytra exceedingly minutely punctured. Length 4-4^ millim. Head impunctate, deeply grooved between the eyes, the latter very large but well separated, frontal elevations transverse, strongly raised, carina linear, palpi flavous ; antennae extending to the middle of the elytra, black, the lower three joints flavous, third joint very slightly shorter than the fourth; thorax one half broader than long, slightly narrowed anteriorly, the sides narrowly flattened, the lateral margins rounded, anterior angles produced into a small tooth, the disc impunctate ; elytra slightly widened towards the middle, narrowly margined, the base not depressed, the surface very minutely and closely punctured; the knees, the anterior and intermediate tibiae and tarsi black (but not always) ; the rest of the legs and the under side flavous, the posterior femora sometimes with a piceous spot near the apex. Hab. Peru. Principally distinguished by the colour of the legs and its small size. O e d io n y ch is in co n sp ic u a , sp. n. Testaceous, the intermediate joints of the antennae black ; eyes closely approached ; thorax impunctate ; elytra finely and closely punctured. Length 5 millim. Head impunctate, deeply grooved between the eyes, the latter very large, each broader than the space dividing them ; clypeus short and thick ; antennae not extending to the middle of the elytra, black, the lower three and the apical two joints testaceous, third and fourth joints equal; thorax twice as broad as long, the sides rounded, broadly flattened, the anterior angles slightly produced but blunt, the surface impunctate ; elytra rather convex, nearly parallel, extremely minutely punctured ; below and the legs testaceous, the breast more or less pale piceous; first joint of the posterior tarsi as long as the following two joints together, claws strongly swollen. Hab. Amazons. Larger than 0. pallescens; the antennae of different colour, the eyes larger and more closely approached, the metatarsus of the posterior legs rather longer than usual, but not so pronounced as in Asphcera, and the thorax typical of the genus. There are four specimens before me. O e d io n y ch is h e r b a c e a , sp. n. Black, head finely punctured ; thorax testaceous, the sides strongly rounded, finely wrinkled; elytra convex, testaceous, strongly and closely punctured, the extreme basal and sutural margins black); abdomen testaceous. |