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Show 450 MR. MARTIN JACOBY ON NEW SPECIES [Nov. 28, scutellum black ; elytra of elongate shape, minutely and obsoletely punctured, flavous; the suture and a discoidal longitudinal stripe, both abbreviated near the apex, black; under side obscure blackish, the legs dark fulvous, the tibife rather darker, prosternum pale. Hab. Tasco, Mexico. Of this species, one of the most elongated of the genus, I received a single specimen from M. Donckier of Paris; the elytral sutural stripe is of narrower shape than the discoidal one. Elytra blue or black, with flavous lateral and apical margins. O e d io n y ch is c in c t ip e n n is , sp. n. The head, breast, and legs black ; thorax fulvous, impunctate; elytra convex, widened posteriorly, metallic blue, closely and distinctly punctured, the lateral and apical margins fulvous; abdomen partly flavous. Length 7 millim. Strongly convex and widened posteriorly ; the head black with bluish gloss, with a few punctures near the eyes ; antenna: black, the lower three joints fulvous below, third and fourth joints equal; thorax with the lateral margins strongly rounded anteriorly, the sides broadly flattened, the disc convex, impunctate, fulvous; scutellum black; elytra widened below the middle, with a short but deep depression within the shoulders, very closely and rather strongly punctured, metallic blue, the lateral margins narrowly and the apex rather more broadly so, fulvous; under side and legs black, the sides of the abdomen more or less fulvous or flavous. Hab. Peru. From other similarly coloured species, the present one is distinguished by the posteriorly widened shape and the distinct and close punctuation of the elytra ; the latter have in some specimens a very small fulvous spot placed near the suture at the middle, the fulvous margin widens slightly and gradually near the apex, the latter part is also entire, not serrulate as in 0. sagulata Erichs. O e d io n y ch is p a l l id ic in c t a , sp. n . Obscure piceous below, the thorax and legs flavous ; tibia? and tarsi and the apex of the posterior femora black ; thorax impunctate ; elytra black, entirely impunctate, the extreme lateral and the apical margins more broadly, flavous. Length 5| millim. Of rather flattened shape; the head nearly black, impunctate, deeply transversely grooved between the eyes, the latter very large, frontal elevations broad, transverse ; antenna? rather robust, black, the lower two joints and the last one fulvous, third and fourth joints equal; thorax twice as broad as long, the sides rather rounded, deeply sulcate, with strongly reflexed and thickened margins, the anterior angles not produced, the surface |
