Coleopterological Notices, V. 421 



and unevenly punctate ; front broadly, strongly rounded ; eyes large, at the 

 base ; tempora nearly obsolete ; nuchal constriction immediately behind the 

 ejes, extending transversely across the head ; ocelli large, separated by two- 

 fifths the total width, on the edge of the nuchal depression ; third joint of the 

 maxillary palpi small, not longer than wide, fourth fusiform, pointed toward 

 apex, in the middle wider than the third, about three times as long ; antennae 

 stout, not quite as long as the head and prothorax, basal joint cylindrical, 

 twice as long as wide and as long as the next two, the latter equal in length, 

 third narrow, obconical, nearly twice as long as wide, six to eleven gradually 

 strongly incrassate and more densely pubescent, forming a six-jointed club, 

 seven to ten strongly transverse ; minute impressions before the ocelli scarcely 

 distinct. Prothorax nearly one-half wider than long ; sides parallel and broadly, 

 evenly arcuate ; base truncate, scarcely wider than the feebly arcuate apex ; 

 disk transversely convex, nearly even but with two obsoletely flattened median 

 areas ; punctures fine, deep, very sparse and rather unevenly distributed. 

 Elytra but very slightly wider than the prothorax and twice as long, about as 

 long as wide ; sides straight, scarcely divergent ; punctures somewhat coarse, 

 deep, not very dense, forming indistinct longitudinal rugulations. Abdomen 

 shining, minutely, sparsely punctate, as long and wide as the elytra ; border 

 moderate. Legs short and rather stout ; tibiae strongly spinulose externally 

 and with an internal row of slender bristles which are very short on the 

 anterior ; hind tarsi nearly four-fifths as long as the tibiae, the last joint barely 

 as long as the four preceding together, the fourth distinctly shorter than tVie 

 third ; anterior feebly dilated in the male. Length 2.9 mm. ; width 1.0 mm. 



California (Sta. Cruz Co.). 



Related to Jior ale (= rufipes Fourc.) but much smaller, with the 

 elytral punctures much coarser and not joined by anastomosing im- 

 pressed lines as they are in that species. 



O. paciflcum n. sp. — Narrow, moderately convex, feebly narrowed ante- 

 riorly, intense black throughout; legs and base of the antennae rufescent ; pubes- 

 cence in the form of minute but distinct erect stiff setae. Head three-fourths 

 as wide as the prothorax, in form as well as structure of the palpi and antennae 

 nearly as in ater, the basal joint of the latter however not as long as the next 

 two and the second longer as well as thicker than the third, outer joints 

 strongly incrassate and transverse. Prothorax three-fifths wider than long ; 

 sides nearly parallel, broadly, evenly arcuate ; base transversely truncate, 

 very slightly wider than the apex ; disk evenly, transversely convex, with 

 scarcely any trace whatever of central flattening, finely strongly and densely 

 punctate. Elytra toward apex slightly wider than the prothorax, nearly two 

 and one-half times as long as the latter ; sides straight, just visibly divergent ; 

 disk finely, deeply, extremely densely punctate, the sculpture feebly rugulose, 

 longitudinally substriate near the middle. Abdomen fully as wide as the elytra 

 and rather shorter. Legs short and stout, the tibite spinulose externally. 

 Length 2.3 mm. ; width 0.75 mm. 



