and nearly parallel, instead of gradually widening from base to apex as is 

 usual. Length 4.5 mm. ; width 2.2 mm. 



The type is a male, collected at Albuquerque New Mexico, by Prof. 

 Wickham. A second example, taken at same place is a female and is 

 probably correctly associated ; it is slightly larger, and noticeably duller 

 than the male. 



C. fraternus Lee. 



Rather broadly oval, pale flavo-testaceous above, black beneath ; males shining, 

 females dull. Antennae scarcely at all infuscate at tip. Head with or without 

 a small occipital spot; prothorax with small median spot, and middle of base 

 narrowly darker, both, however, sometimes obsolete; elytra with small discal 

 markings, mostly behind the middle. Punctuation of elytra rather close and 

 even, the series of larger punctures scarcely evident. Beneath coarsely closely 

 punctate. Front and middle tarsi of male widely dilated, the second joint per- 

 ceptibly wider than the first and third, anterior claw of front tarsus more 

 strongly curved but not much thicker than the posterior one. Length 3.4 to 

 3.95 mm.; width 1.9 to 2.2 mm. 



California ("New River, Colorado Desert") (type) ; Mokelumne Hill 

 (Blaisdell) ; Arizona (Phoenix, Palomas.) 



This species seems quite characteristic of the arid and semi-arid 

 regions of Arizona and contiguous territory. Its occurrence at Moke- 

 lumne Hill on the western side of the California Sierras was hardly 

 to be expected. The species is most likely to be confounded with the 

 paler forms of medialis, which occur in the same region; the latter 

 however is rather narrower in form, with broader elytral clouds, the 

 tarsi of the male less dilated and with somewhat differently shaped 

 anterior claw, the females, as a rule, more shining. All females of 

 fraternus that I have seen are alutaceous and dull. 



C. tumidiventris sp. nov. 



Oval, moderately convex ; head, thorax and legs rufotesiaceous, elytra pale 

 flavotestaceous to dull yellow, body beneath black. Head black or fuscous at 

 sides and vertex ; prothorax with basal and apical margins sometimes narrowly 

 infuscate, a small fuscous discal spot, rarely lacking; elytra with variable 

 blackish or fuscous markings, which in the type consist of four well defined 

 vittae on each, the two inner ones entire, the two outer interrupted; but in the 

 greater number of specimens the vittae are more or less completely fused 

 posteriorly or even throughout. Antennae with the outer joints lightly in- 

 fuscate at their apices. Integuments polished in the male, in the female the 

 surface may be either shining like the male or finely alutaceous and dull both 

 above and beneath. Head and thorax finely sparsely punctate, elytra with 

 intermixed fine and coarser punctures, the sutural and two discal series of 

 coarser punctures distinct as far as the middle. Beneath moderately punctate ; 

 last ventral obtusely tumid each side, the tumidity stronger and more punctate 

 in the male. Front and middle tarsi of male rather strongly dilated, the second 

 joint widest, but less conspicuously so than in the three preceding species. 

 Length 4.2 to 4.5 mm.; width 2.15 to 2.4 mm. 



16 



