June 1900.] Casey : On North American Coleoptera. 151 



rather broadly, rectilinearly truncate ; legs testaceous, the femora blackish, except 

 toward tip, the hind tarsi shorter than the tibiae ; male antennal club extending 

 three-fifths of the thoracic length, with the second joint three-fifths as long as the 

 first, in the female smaller, with the second joint slightly shorter than the first 

 Length 2.0-2.8 mm.; width 1. 23-1. 8 mm. Oregon, California (Humboldt to 



San Diego) and Nevada (Reno) apicale Mann. 



9— Body broadly oval, the thoracic lobe broadly truncate ; joints of the antennal club 



very unequal 10 



Body more or less narrowly oval, the thoracic lobe much narrower II 



10 — Body deep black throughout, the elytral punctures sparse and coarse, the pubes- 

 cence sparse, fine, blackish in color, uniformly distributed and very inconspicu- 

 ous ; antennal club of the male slender, two and one-half times as long as wide, 

 extending to basal third, its second joint relatively very short, much less than 

 half as long as the first, the litter twice as long as wide, of the female much 

 smaller, extending to the middle, the second joint much shorter than the first. 

 Length 2.1-2.8 mm.; width 1.4-1.8 mm. Arizona... dorcatomoides, sp. nov. 

 Body piceous-brown in color, the elytra coarsely and less sparsely punctured, the 

 pubescence uniform, more abundant, short, coarse, fulvo- cinereous in color and 

 distinct ; male club not extending quite to basal third, the second joint more than 

 half as long as the first, the latter not twice as long as wide. Length 2.5-2.7 



mm.; width 1. 6-1. 7 mm. Texas (Austin) obesulum, sp. nov. 



II — Thoracic punctures sparse, at least toward the middle 12 



Thoracic punctures rather close-set throughout 16 



12 — Elytra coarsely, though rather sparsely, punctate. Sonoran and Pacific re- 

 gions 13 



Elytra very finely and rather less sparsely punctate. Atlantic regions 15 



13 — Pubescence of the elytra longer, coarse, yellowish-cinereous and distinct; body 

 very small, somewhat narrowly oblong-oval, black or piceous-black ; male an- 

 tennal club extending beyond basal third, elongate-oval in form, relatively large, 

 more than twice as long as wide, the second joint three -fifths as long as the first, 

 the latter much longer than all the preceding portion together, the funicle very 

 short, not as long as the two globular basal joints combined. Length 1.65 mm.; 



width I.o mm. Arizona .• granum, sp. nov. 



Pubescence short, fine, dark in color and less conspicuous 14 



14 — Body deep black in color, the elytral pubescence blackish and not at all fulvous ; 

 joints of the antennal club in the female less unequal, the second four-fifths as 

 long as the first. Length 2.3 mm.; width 1.3 mm. Arizona.. .anthrax, sp. nov. 

 Body piceous-black, polished, sparsely punctured and unusually sparsely pubescent, 

 the hairs fulvo piceous in color and more distinct ; joints of the antennal club in 

 the female very unequal, the second about two-thirds as long as the first, the latter 

 longer than the entire funicle; legs ferruginous. Length 2.0-2.6 mm.; width 



1. 25-1. 6 mm. California (Lake and Sonoma Cos.) affine, sp. nov. 



15 — Narrowly oblong-oval, black or piceous-black, shining, the pubescence very short, 

 dark in color and inconspicuous; antennal club pale as usual, large and evenly 

 oval, in the male not twice as long as wide, the second joint very much shorter 

 and narrower than the first. Length 1. 73 mm.; width 1.0 mm. Georgia. 



ruficorne Lee- 



