38 MEMOIRS ON THE COLEOPTERA 



pronotum excessively minute and very sparse, the sides of the pro- 

 thorax broadly arcuate and converging from base to apex as usual; 

 elytra barely longer than wide, sculptured nearly as in penicillatus, 

 except that the series postero-laterad become more close-set and 

 composed of punctures which are deeper, though even still less 

 lunate in form, almost rounded; under surface and legs nearly as in 

 the preceding, the metasternal process broad, with the tip broadly 

 rounded and minutely beaded. Length 2.3-2.4 mm.; width 1.5-1.6 

 mm. Wyoming. Two examples rupimontis n. sp. 



7 Head unusually large even for the present genus, more than half as 

 wide as the prothorax. Body very stout, oval, evidently though 

 slightly narrowed behind, the apex broadly obtuse; surface ex- 

 tremely convex, highly polished, beneath black throughout, the legs 

 and antennae concolorous, the club of the latter obscure testaceous; 

 funicle long, much longer than the club; third joint very long, ex- 

 ceeding that of penicillatus and much longer than the next two 

 combined, each of which is more than twice as long as wide; head 

 minutely but distinctly punctate, the pronotum very minutely and 

 sparsely, of the usual outline; elytra as wide as long, less than twice 

 as long as the prothorax; serial punctures as usual, broadly wanting 

 basally, everywhere extremely minute and inconspicuous, those of the 

 intermediate series equal to the others; postero-laterally they are a 

 little less minute and deeper though barely at all dilated; meta- 

 sternal process very long, extending well beyond the coxae, the apex 

 rounded and finely though strongly beaded. Length 2.9 mm.; 

 width 1.9 mm. Southern California, without more accurate record 

 of locality capax n. sp. 



Head relatively less developed, about one-half as wide as the prothorax. . 8 



8 Elytral punctures as in penicillatus, very fine, feeble and widely 

 separated throughout, those of the intermediate series as distinct as 

 the others; postero-laterally they are still very small and barely at 

 all dilated. Form stout, very convex, slightly narrowed posteriorly, 

 with moderately obtuse apex, less so in the female, where the apex 

 is broader; head and pronotum sculptured as usual; antennae rather 

 long, slender, the funicle very much longer than the club; third joint 

 very much shorter than in capax, apparently in the same sex of 

 each, and not longer than the next two, each of which is evidently 

 more than twice as long as wide; scutellum much less transverse 

 than in capax, being only about three-fifths wider than long; elytra 

 (cf ) slightly longer than wide, or much broader and fully as wide as 

 long ( 9 ) ; metasternal process extending slightly beyond the coxae, 

 strongly rounded and with the thick convex bead obsolescent at the 

 sides. Length 1.7-2.8 mm.; width 1.2-1.8 mm. Coast regions of 

 California from San Diego (the type locality) to Sonoma, also one 

 each from the Mojave Desert and San Bernardino Mts. [P. peni- 

 cillatus Csy. nee Say, pars, olim] ovalis Lee. 



Elytral punctures very fine as in the preceding but, postero-laterally, 

 becoming sensibly dilated and lunate, though not so greatly as in 

 the simplex section; metasternum shorter and more truncate 9 



9 Punctures of the intermediate series as large and evident as those of the 



