Coleopterological Notices. 105 



testaceous. Head excessively finely, feebly and rather sparsely punctate ; 

 antennje moderate, third joint not quite as long as the next two, club robust, 

 compact, very strongly compressed, ninth joint slightly wider than long, ninth 

 and tenth slightly more developed on the anterior side, nine to eleven increas- 

 ing gradually in width, the latter fully as long as the two preceding, with the 

 apical process well developed. Prothorax feebly lobed in the middle of the 

 base ; basal bead distinct in the middle ; surface extremely sparsely minutely 

 and feebly punctate. Scutellum wider than long, ogival. Elytra nearly three 

 times as long as the prothorax ; sutural bead very fine, disappearing at basal 

 third ; discal striae fine but distinct, almost exactly as in LeContei; surface not 

 reticulate, having rows of very fine punctures accompanied by the feeblest trace 

 of fine impressed lines ; alternate series more distinct, the intermediate series 

 of finer punctures almost completely obsolete toward suture. Abdomen minutely 

 and rather strongly reticulate and alutaceous except as usual along the apices 

 of the segments, where it is polislied, coarsely and rather sparsely pubescent, 

 and subasperately punctate. Leys nearly as in LeContei. Length 2.2 mm. 



New York. 



The metasternura is polished, not perceptibly punctate, the iew 

 sparse hairs entirely filling the punctures, the process is broader 

 than usual, broadly, evenly rounded at apex, projecting but slightly 

 beyond the middle coxae, the mesosternura being reduced to a very 

 fine apical bead which is only slightly wider at the extreme sides 

 of the apex. 



The vittse of the elytra are extremely diffused, and in some lights 

 become almost invisible; the punctures of the elytra are rather 

 more distinct than in LeContei, and the form is slightly more elon- 

 gate-oval and less attenuate behind than in that species, 



O. nigricollis Lee— Trans. Am. Ent. Soc, 1868, p. 50.— Evenly, rather 

 broadly elliptical, strongly convex, polished; head and pronotum blackish- 

 piceous ; elytra rufo-testaceous, the lateral margins narrowly, more feebly and 

 indefinitely, and a broad, more definite and darker sutural, vitta piceous, the 

 latter gradually attenuate from base to apex ; under surface piceous-brown, 

 the legs and antennae flavate. Head strongly, sparsely punctate ; eyes small. 

 Prothoi-ax more than twice as wide as long ; basal lobe very broadly, feebly 

 arcuate"; basal bead fine, flat, strongly marked, obsolete at lateral fourth ; 

 disk very minutely, sparsely punctate, the punctures rather denser and more 

 distinct laterally ; marginal bead very fine ; apical angles right, very narrowly 

 rounded. Scutellum two-thirds wider than long ; apex rounded ; sides arcuate. 

 Elytra about three times as long as the prothorax, not narrowed behind ; apex 

 very broadly rounded ; sides coarctate with those of the prothorax ; basal 

 stria very fine, reflexed along the scutellum and obsolete opposite the apex of 

 the latter ; sutural bead very fine, attaining the apex of the scutellum ; two 

 discal striae very fine but distinct, the first continuous from the suture at the 

 apex and obsolete at basal fourth, the second approaching very near the first 



