OCR Text |
Show 446 MR. MARTIN JACOBY ON NEW SPECIES [Nov. 28. Length 6| millim. . Head impunctate, the vertex black, the clypeus flavous, frontal elevations scarcely indicated, eyes widely separated, labrum an palpi flavous; antennae fulvous, the first joint piceous above, third joint shorter than the fourth; thorax strongly transverse, the sides strongly rounded, the anterior angles very prominent and pointed, the lateral sulci narrow, somewhat interrupted anteriorly, not well separated from the discoidal poition, the surface impunctate, flavous, with a transverse short black band at the middle of the anterior margin; elytra with narrowly reflexed margins, extremely minutely punctured when seen under a strong lens, flavous, with two broad transverse black bands, one at the base, the other below the middle, the latter band shorter than the basal one (in a longitudinal sense), neither band extends to the lateral margins and the flavous space separating them is narrow and perfectly regular in shape ; below and the legs black. Hab. Bolivia. The thoracic spot or band placed at the middle of the anterior margin and the regular shape and black colour of the elytral bands distinguish this species, of which I know only a single specimen. O e dio n y ce t s w e is e i , sp. n . Flavous, the base of the head, the antennae, and the breast and legs black; thorax impunctate; elytra finely and closely punctured, the basal margin and a transverse narrow band below the middle dark metallic blue. Length 8 millim. Head with a few fine punctures, black, the clypeus flavous; eyes large, the diameter of each as wide as the intermediate space; frontal elevations oblique, strongly raised, bounded by a deep fovea behind; antennae scarcely extending to the middle of the elytra, black, the third and fourth joints equal; thorax twice as broad as long, somewhat narrowed anteriorly, the lateral margins strongly rounded, the anterior angles distinctly produced into a tooth, the sides deeply sulcate, the surface impunctate, except when seen under a very strong lens, when some minute punctures are visible, flavous; scutellum black ; elytra convex, elongate, but slightly widened at the middle, very finely and closely punctured, the extreme base as far as the shoulders and a narrow band below the middle, not quite extending to the lateral margins, violaceous blue ; below and the legs black, abdomen fulvous. Hab. Colombia. Much larger than 0. colombiana; the bands of the elytra blue, the spot near the scutellum absent, and the thorax of entirely different shape ; the legs black. O e d io n y ch is s e l e c t a , sp . n . Pale fulvous; elytra extremely minutely and closely punctured, |