156 CASEY 



and closer granules on the alutaceous posterior declivity ; pro- 

 sternal process only moderately constricted between the coxae ; 

 abdomen finely but strongly, sparsely punctate, more coarsely, 

 densely so on the last segment. Length 8.4 mm.; width 5.1 

 mm. California (San Pedro) arenarius Csy. 



Body more narrowly elongate-elliptic, strongly convex, polished, black 

 to rufo-piceous in color, the under surface and legs always some- 

 what paler ; head nearly as in arenarius, very coarsely, densely 

 punctate behind the suture, more finely, clearly and densely so on 

 the flattened apical lobes, the median tumescent part of the epi- 

 stoma rugosely but less densely punctate ; prothorax less abbre- 

 viated, the sides less strongly converging, broadly and subevenly 

 arcuate from base to apex, the apical angles more distinct and less 

 rounded ; surface similarly very sparsely punctate, the larger lat- 

 eral punctures less coarse and the sides more broadly declivo- 

 explanate, the bead similar ; elytra not at all wider than the pro- 

 thorax, very slightly longer than wide, the sides converging and 

 rounding from before the middle, the apex obtusely and evenly 

 rounding from above, the surface inflexed near the apex, the 

 apical angle sharply ogival as usual, the sculpture somewhat less 

 coarse than in arenarius; prosternal process very strongly con- 

 stricted between the coxae, the neck scarcely more than half as 

 wide as the dilated and rounded posterior part ; abdomen almost 

 similarly punctate, the last segment relatively less densely. Length 

 8.0-8.6 mm. ; width 4.7-4.815 mm. Sta. Barbara, G. W. Dunn. 



sternalis n. sp. 



9 Body evenly elliptic in form, the prothorax not at all wider than 



the elytral base 10 



Body broadly oblong-suboval, the prothorax more swollen basally, and, 

 at a short distance before the base, distinctly wider than the base 

 of the elytra n 



10 Form rather elongate, black, the antennae and tarsi paler; head 



with irregular, dense, mingled coarse and finer punctures behind 

 the suture, the epistoma but' feebly tumid medially, more or less 

 sparsely punctured; prothorax two and one-half times as wide as 

 long, the sides strongly converging, strongly and very evenly 

 arcuate from base to apex, the angles only very narrowly 

 rounded ; surface rather finely but strongly, sparsely punctate, 

 more coarsely and with admixture of smaller close-set punctures 

 laterally, the sides rather narrowly, subequally explanate, the bead 

 very fine throughout; elytra scarcely visibly longer than wide, 

 evenly rounded behind from above, the sides becoming parallel 

 only toward base, the punctures as usual, the posterior fulvous 

 pubescence conspicuous; prosternal process moderately con- 

 stricted, the neck fully two-thirds as wide as the dilated posterior 

 part ; abdomen finely, sparsely punctate, more strongly and 

 densely on the last segment as usual. Length 6.9 mm. ; width 

 4.15 mm. Los Angeles Co obscurus n. sp. 



