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Show 452 MR. MARTIN JACOBY ON NEW SPECIES [Nov. 28, Head with some punctures at the vertex, black, the eyes more or less margined with flavous within and with some distinct punctures; antennae not extending to the middle of the elytra, black, third and fourth joints equal; thorax scarcely twice as broad as long, the lateral margins straight at the base, rounded in front, the anterior angles produced into a tooth, the sides broadly flattened, flavous, the middle of the disc in shape of an anteriorly narrowed broad band, black, impunctate ; elytra rather broad, very closely and finely but distinctly punctured, black, the lateral margins narrowly flavous, this colour widened at the apex into a spot which does not quite extend to the suture ; under side and legs black or piceous. Hab. Espirito Santo, Brazil. Distinct in its coloration from any other species of the genus known to me ; two specimens are before me. Elytra pale, with small black spots. O e d io n y ch is b ip u n c t u l a t a , sp. n. Testaceous above, the under side and legs darker ; thorax impunctate, with broadly flattened sides; scutellum piceous; elytra very finely and closely punctured, each with a small black spot below the middle. Length 6 millim. Vertex of the head stained with piceous, with a central groove and bilobed in front, frontal tubercles short and broad; clypeus convex ; antennae with the lower three joints flavous, the following four black, the rest wanting ; thorax strongly transverse, of very even width, the sides straight at the base, rounded anteriorly, broadly flattened, anterior angles thickened, oblique but scarcely produced outwards, the disc impunctate, testaceous, obsoletely depressed in front of the scutellum, the latter triangular, nearly black; elytra strongly convex, nearly parallel, with a short row of deeper punctures within the shoulders, the rest very finely and closely punctured, below the middle a small black spot is placed, halfway between the lateral and sutural margins ; under side and femora fulvous; prosternum narrowly elongate, rather convex. Hab. Prov. Tucuman, Argentine Rep. (C. Bruch). In the markings of the elytra and general coloration this species resembles 0. cornplanata Suff., from Cuba, but the latter is smaller, much more depressed in shape, and has impunctate elytra. O e d io n y ch is t r il o b a , sp. n. Elongate, testaceous ; head and thorax impunctate, the latter with two trilobed black spots; elytra not perceptibly punctured, each elytion with three black spots, two at the base and one at the middle, the extreme sutural margins from the middle to the apex black. r Length 6 millim. |
