454 CASEY 



the short hairs sparse and subevenly distributed; head much nar- 

 rower than an elytron, rather coarsely but sparsely and evenly 

 punctate, the antennce scarcely longer than the head and prothorax, 

 with the second and fourth joints equal in length and decidedly 

 shorter than the third ; prothorax formed as in rotundiis^ coarsely 

 but very sparsely punctured, becoming very coarsely and densely 

 so in lateral fifth ; elytra almost hemispherical, six times as long 

 as the prothorax and nearly one-half wider, coarsely and deeply 

 punctate, with the punctures separated by notably more than their 

 own widths, the flanks gradually inflexed and a little more coarsely 

 and closely punctate, the interstices not evidently punctate but 

 not smooth ; under surface nearly as in roticndus^ the first and 

 second ventral sutures deeply impressed near the sides, as fre- 

 quently the case and possibly to some extent a sexual character. 

 Length 5.4 mm. ; width 3.7 mm. Colorado (Greeley). 



globosus Csy. 



II — Form rounded, convex, deep black, rather shining, the vestiture 

 apparently sparse, shorter and less conspicuous than usual ; head 

 distinctly narrower than an elytron, more or less coarsely and 

 sparsely punctate, becoming longitudinally rugose or plicato- 

 rugose laterally, the second antennal joint slightly longer and 

 notably thicker than the fourth and much shorter than the third; 

 prothorax of the usual form, between three and four times as wide 

 as its median length, rather coarsely but sparsely punctured, very 

 coarsely and densely so toward the sides ; elytra globose, five or 

 six times as long as the prothorax and nearly one-half wider, very 

 coarsely but not densely impresso-punctate, the punctures separated 

 by twice their own widths or more, the interspaces smooth but 

 more or less convex, with some smaller scattered punctures; 

 under surface coarsely punctured, the abdomen more sparsely as 

 usual. Length 6.6-6.9 ^^^'^' ! width 4.5-4.6 mm. New Mexico 

 and Colorado inflatus n. sp. 



Form rounded, much smaller in size, very convex, moderately shining, 

 deep black, the erect hairs moderately long, the shorter recurved 

 hairs sparse and not very short, the pubescence cinereous, with a 

 very feeble yellowish tinge, not or very indefinitely serial on the 

 elytra ; head coarsely and only moderately sparsely punctured, 

 densely so and still more coarsely toward the sides, the antennse 

 nearly as in inflatus but with the third joint relatively less elon 

 gate ; prothorax formed as in i7ijiatus^ very coarsely, deeply 

 punctate, the punctures separated by about twice their own widths 

 medially, becoming extremely coarse and densely crowded later- 

 ally ; elytra globose, relatively as in inflatus^ the surface coarsely 

 rugose because of the very large deep and impressed punctures 

 and the convex, impunctate and shining though slightly rugulose 

 interspaces, which are but little wider than the punctures ; abdo 

 men very coarsely, rather closely punctured and rugose. Length 

 5.3 mm.; width 3.7 mm. New Mexico puncticeps n. sp 



