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Show 438 MR. MARTIN JACOBY ON NEW SPECIES [Nov. 28, O e d io n y ch is info rmis (MS. Clark), sp. n. Testaceous, the head, breast, and abdomen (partly) black; thorax impunctate, scutellum black; elytra minutely punctured each with three transverse black bands ; legs testaceous, the apex of the posterior femora and the base of the tibiae black. Length 6 millim. Head narrow, dark piceous, impunctate, eyes large; two basal joints of the antennae testaceous, the others wanting; thorax with the lateral margins strongly rounded, the sides very broadly flattened, anterior angles not produced into a tooth, the disc impunctate, testaceous ; scutellum black; elytra with rather broadly reflexed lateral margins, extremely finely and closely punctured, testaceous, with three transverse black short bands abbreviated at each end, the basal one in shape of a large subquadrate patch placed on the shoulders, the second one, the narrowest, placed at the middle, and the third near the apex ; under side black, the last three abdominal segments and the legs testaceous, the extreme apex of the posterior femora and the base of their tibiae black. Hab. Rio de Janeiro. O e d io n y ch is g r a y i , sp. n. Dark fulvous below; clypeus and thorax flavous, base of the head black, anterior angles of thorax mucronate, the latter impunctate ; elytra very finely and closely punctured, flavous, a broad transverse band at the base and another below the middle, not extending to the margins, dark violaceous, posterior edge of the second band rounded. Length 6| millim. Head impunctate, the vertex black, frontal tubercles narrowly transverse, flavous, as well as the clypeus, labrum, and the palpi; antennae short, not extending to the middle of the elytra, dark fulvous, the basal joint thick, subcylindrical, widened at the apex, the third joint twice as long as the second but shorter than the foui'th joint, the following joints about as long as the third ; thorax narrowed anteriorly, about twice and a half broader than long, the sides nearly straight, the lateral sulci not deeply separated from the disc, anterior angles mucronate, the surface convex, impunctate, flavous ; scutellum blackish ; elytra rounded and widened towards the middle, narrowly margined, the shoulders with a short, moderately deep impression within, the surface finely but distinctly and very closely punctured, the dark bands very wide, the dividing spaces narrow, the lateral margins likewise narrowly flavous, the posterior band rounded at its apical margin, leaving the suture for a little way upwards and the apex of the elytra somewhat more broadly flavous; under side and legs fulvous. Hab. Amazons (Bates). The single specimen coutained in my collection was obtained by Bates, but bears no special locality. The species differs from |