382 MEMOIRS ON THE COLEOPTERA 



arcuately narrowed from apex to base. Length (9 ) 15.0-16.0 mm.; 

 width 5.7-6.0 mm. California (locality not recorded). 



sublaevis n. sp. 



Body much smaller, strongly shining, deeper and bright red, the under 

 surface densely clothed with very fine slaty-blue hairs; legs black, the 

 femora all red, the knees black; vestiture above very fine, cinereous 

 and inconspicuous, the erect black hairs rather long and distinct; 

 antennae short, three-fourths as long as the body, black, the annu- 

 lations very much narrower than usual as in the preceding, the 

 three basal joints with but few cinereous hairs, the scape rufous, 

 tipped with black to gradually black almost from the base; prothorax 

 distinctly wider than long and arcuate at apex, the lateral prominences 

 very moderate and broadly obtuse, the umbo abruptly, moderately 

 elevated, with evenly arcuate sides and strong scattered punctures, 

 the median line not only without vestige of impression but, as a 

 remarkable exception, tumid at base; elytra short, but little more 

 than one-half longer than wide, the punctures distinct and moderately 

 sparse, much stronger than in the preceding, the spots moderate, the 

 post-humeral always wanting; male with the fifth ventral slightly 

 longer than the fourth, its apex unusually deeply sinuate medially, 

 or ( 9 ) much longer than the fourth, with the apex truncate medially; 

 female of the two type specimens much smaller than the male. 

 Length (cf 9 ) 10.5-12.0 mm.; width 3.7-4.7 mm. California 

 (Siskiyou Co.), Koebele obsoletus n. sp. 



Body nearly similar but more elongate, with longer though otherwise 

 similar antennae and different male sexual characters, similar in 

 coloration, sculpture and vestiture above but beneath having the 

 dense vestiture paler, more ashy and notably longer and coarser; 

 prothorax and elytra nearly similar in sculpture, shining lustre and 

 maculation; male with the fifth ventral segment but just visibly 

 longer than the fourth, with its apex feebly sinuato-truncate, the 

 truncature about half as wide as the base; tarsi larger and longer, 

 the basal joint especially much longer and, on the anterior, more 

 inflated. Length (d 71 ) 12.0-12.6 mm.; width 4.5-4.7 mm. Cali- 

 fornia (without indication of locality) coccineus n. sp. 



22 Vestiture of the under surface cinereous to ochreo-cinereous; upper 

 surface generally pale red to yellowish-red 23 



Vestiture beneath cinereous-blue to deep slaty-blue; upper surface 

 generally deep red, the body stouter and larger 25 



23 Thoracic umbo broadly and deeply impressed in almost basal half. 

 Body strongly convex, rather shining, pale red, the cinereous ves- 

 titure above not at all conspicuous, the erect hairs rather short, 

 cinereous; antennae black, rather thick, not quite as long as the body, 

 strongly annulate, the basal joint bright red; prothorax moderately 

 transverse and protuberant at the sides, the umbo very strongly 

 elevated and extremely abrupt, flattened above and coarsely punc- 

 tate; elytra oblong, the four black spots distinct, subequal among 

 themselves, the punctures unusually coarse, deep and rather close-set, 

 fine but distinct apically; under surface black, densely clothed with 

 coarse ochreo-cinereous vestiture, the fifth segment (cf ) not longer 



