OCR Text |
Show 456 MR. MARTIN JACOBY ON NEW SPECIES [Nov. 28, strongly produced, the sides broadly sulcate, the surface impunctate, whitish-testaceous; scutellum black ; elytra widened towards the middle, rather broadly margined, especially so at their greatest width, not perceptibly punctured, with two bioad, transverse, sometimes very obscure dark bands one at the base, containing two black spots, of which one is placed on the shoulders, the other near the scutellum, the second band below the middle, thin which a single larger subtriangular black spot is placed ; der side and legs black ; metatarsus of the posterior legs rather shorter than the following two joints together ; claw-joint strongly swollen. Hab. Bolivia. The ground-colour of the elytra is but little lighter than the bands, except when these are well marked: in this case there is only the single spot visible near the scutellum-that is, in a specimen before me ; in the others the black spots are well marked, but the bands are obscure. O e m o n y c h is a t r o p u n c t a t a , sp. n. Testaceous, the breast more or less black ; thorax impunctate, the sides broadly flattened ; elytra finely and closely punctured, each with five black spots (2.1.2). Length 5-6 millim. Head impunctate, with a deep triangular fovea between the eyes, the latter large, rather closely approached ; frontal elevations contiguous, distinct; antennae flavous, the 6th, 7th, and 8th joints more or less piceous, 3rd and 4th joints equal; thorax with broadly flattened sides, the lateral margins rather evenly rounded, the posterior angles produced into a small tooth, the surface impunctate ; elytra with rather broadly flattened margins, finely but distinctly and closely punctured ; a spot on the shoulders, one near the scutellum, a third at the middle, and two others placed transversely near the apex, black ; under side (the black breast excepted) and the legs testaceous; last abdominal segment of the male rather deeply sinuate at each side. Hab. Brazil. The number and position of the elytral spots distinguish this species, of which I received a specimen from Mr. 0. Bruch, of the La Plata Museum ; two others I subsequently obtained from M. Clavareau, who likewise got them from the same gentleman, without indication of a more exact locality. O e d io n y ch is a r g e n t in e n s is , sp. n. Black; above testaceous, the apical joints of the antennse fuscous, the knees and the tarsi black ; thorax impunctate ; elytra finely punctured, somewhat flattened, each elytron with six small black spots (2.2.2) placed transversely, the last two pairs oblique. Length 4^-5 millim. |