| OCR Text |
Show 458 MR. MARTIN JACOBY ON NEW SPECIES [Nov. 28, O e d io n y ch is to r q u a t a , sp. n. Testaceous, the terminal joints of the antennae and the breast piceous; head strongly punctured; thorax impunctate; elytra distinctly punctured, with three small black spots, two at the base and one at the middle of each elytron. Length 6 millim. Rather flattened above, the head very strongly and deeply punctured; frontal elevations transverse, strongly raised, nearly contiguous; carina short and rather broad; antennfe testaceous, the terminal joints more or less piceous, third and fourth joints equal, apical joints shorter; thorax twice as broad as long, the sides rounded and broadly flattened, anterior angles not produced outwards, the surface impunctate, obsoletely transversely grooved at each side near the base; elytra slightly widened towards the middle, very closely and distinctly punctured at the base, rather more finely so below the middle, the spots placed as in 0 . hume-ralis Fab., one at the shoulders, one near the scutellum, and the third of oblique shape at the middle ; the breast nearly black; legs testaceous, as well as the abdomen. Hab. Brazil. I must separate this species from 0. humeralis Fab., 0. 4-jmnctata Schauf., and several others with nearly similar elytral markings, on account of the strongly punctured head and the black breast; the eyes are moderately large and widely separated. O e d io n y ch is decor a, sp. n . Narrow and subdepressed, testaceous ; antennfe black, the basal and the terminal three joints pale; thorax impunctate, the anterior and posterior margins fuscous at the middle; elytra nearly impunctate, each with two basal elongate spots, a transverse band at the middle, and another spot near the apex, fuscous. Length 5-6 millim. Head impunctate, testaceous or pale fuscous ; eyes very lar°-e ; frontal tubercles trigonate, nearly joined; antennfe scarcely extending to the middle of the elytra, black, the basal joint testaceous, the terminal three joints obscure flavous, third and following joints equal; thorax flattened, rather more than twice as broad as long, the sides rounded, broadly flattened, the base (in one specimen) with an obsolete transverse groove, the disc impunctate, testaceous, the anterior and posterior margins fuscous at the middle, anterior angles acute but scarcely produced ; elytra not perceptibly punctured, testaceous, with four fuscous or piceous marks-an elongate one on the humeral callus, a rounded spot near the scutellum, a short transverse band at the middle, and another largei rounded spot neai the apex ; under side and legs testaceous. Hab. Amazons ; also Peru. I may add that the suture of the elytra is sometimes also narrowly marked with fuscous, and that the central band has a short and narrow stripe attached to its outer end, pointino-downwards. 6 |
