198 CALIFORNIA ACADEMY OF SCIENCES. 



These species, with exception of the first, which was 

 described by Dr. Le Conte from Vancouver Island, were all 

 taken in wet moss at the bottom of ravines near the sea- 

 coast, and within a very limited area. I have met with 

 them in no other locality. 



0. COnvexuS n. sp.— Form rather robusf, convex, dark rufo-castaneous; 

 elytra scarcely perceptibly paler, dark rufous; legs and antennae slightly paler, 

 rufoup; pubescence coarse, rather long, not rery dense; integuments polished. 

 Head roi ust, much wider than long; eyes moderate, prominent, at their own 

 length from the base; sides behind them strongly convergent and arcuate to 

 the base, which is about one-half as wide as the width at the eyes; impressed 

 groove strongly arcuate; occiput with a narrow canaliculation in the mid- 

 tile at base; autennse robust, short, as long as the head and prothorax to- 

 gether; basal joint robust, longer than wide, distinctly narrowed toward base, 

 «tcond slightly narrower, cylindrical, as long as wide, three to eight slightly 

 narrower than the second, gradually slightly shorter, third slightly wider 

 than long, ninth and tenth abruptly much wider, short, transverse, the tenth 

 slightly the larger, eleventh distinctly wider than the tenth, conoidal, acutely 

 pointed, as long as the four preceding joints together. Prothorax widest 

 tiliohtly before the middle, where it is scarcely visibly wider than the head 

 and nearly as wide as long; sides here very strongly rounded, thence rather 

 strongly convergent and distinctly sinuate to the base; the latter broadly 

 arcuate, two-thirds as wide as the disk, one-third wider thnu the apex; the 

 latter feebly arcuate; sides toward the apex slightly sinuate, basal angles 

 prominent, slightly obtuse, not at all rounded; disk broadly convex; canalicu- 

 lation terminating at one-sixth the length from the apex, slightly dilated in 

 the middle in the form of a small puncture, continued toward base beyond 

 the transverse groove nearly one-half the distance between the latter and the 

 base; transverse groove deeply impressed, very feebly posteriorly arcuate, at 

 one-third the length from the base; lateral fovejB deeply impressed, spougiose; 

 disk between transverse groove and base strongly convex; surface finely, 

 sparsely punctate. Elytra at base slightly narrower than the prothorax, at 

 apex one-half wider than the latter; sides rather strongly and nearly evenly- 

 arcuate; disk broadly and rather strongly convex, as long as wide; humeri long- 

 itudinally prominent but not carinate; sutural striae very deeply impressed, 

 entire, slightly arcuate, two and three equal, fine, strongly impressed, two- 

 thirds as long as the disk, four short, arcuate, terminating slightly before the 

 middle, fine, strongly impressed; surface rather finely, feebly and sparsely 

 punctate. Abdomen slightly shorter and narrower than the elytra; border 

 inclined, strong and conspicuous; surface broadly convex, very minutely, 

 sjmrsely punctate. Legs moderate in length, slender; femora slender, very 

 slightly clavate; posterior tibiae nearly twice as long as the tarsi, very feebly 

 dilated toward tip. Length 1 9-2.0 mm. 



