THE CANADIAN ENTOMOLOGIST. 39 



slightly subangiilate before the middle, the surface coarsely, sub- 

 muricately punctate, only slightly more closely toward the sides ; 

 elytra evidently wider than the prothorax, finely, strongly and 

 unevenly tuberculose, the tubercles slightly shining ; prosternum 

 irregularly, closely and muricately tuberculose. Length 16.5 mm.; 



width 7.0 mm. California induratus, Csy. 



Elytra at least twice as long as wide in both sexes 6 



6. Klytra evidently wider than the prothorax, greatly so in the female. 



Rather stout, the prothorax fully as long as wide, very coarsely and 

 strongly ( (;J ) or moderately (9) muricately punctate, the surface 

 ( cJ ) more shining than in the ? , the punctures slightly closer 

 toward the sides, which are rounded, only slightly prominent before 

 ihe middle ; elytra rather finely but very irregularly, closely tuber- 

 culose, the lustre very dull in the $, rather shining in the o , the 

 sculpture transversely and very unevenly rugulose in the latter ; 

 prothorax very unevenly punctato-tuberculose. Length 18. 0-19.0 

 mm.; width 6.9-7.5 ^i""^- California (southern). . .ventriosus^ n. sp. 

 Elytra never distinctly wider than the prothorax in either sex 7 



7. Elytral tubercles larger, strong, approximating half the thickness of 



the femora in diameter, arranged more or less definitely in close 



series 8 



Elytral tubercles minute, sometimes very feeble, confusedly arranged. 9 



8. Form rather slender, dull in lustre, the prothorax nearly as long as 



wide, parallel and broadly rounded at the sides, narrowing toward 

 base, strongly, sparsely, non-muricately punctate, more closely and 

 coarsely toward the sides ; elytra with the tubercles large, strongly 

 convex and less dull, the interstices densely dull and with small, 

 remote and perfectly simple punctures j prosternum coarsely 

 punctato-tuberculose. Length 17.0 mm.; width 6.2 mm. New 



Mexico ; guttulatus, Horn 



Form nearly similar, the pronotum more uneven, with two more or 

 less distinct medial indentations transversely arranged, the punctures 

 coarser nuiricate, still larger toward the sides ; elytra with smaller 

 tubercles, less than half the thickness of the femora in diameter, less 

 opaque than the interstices, which are strongly, muricately punctate; 

 prosternum with small, distinct and sharply elevated tubercles ; 

 abdomen finely, sparsely punctate, more strongly toward base. 

 Length 14.5-16.0 mm.; width 5.3-6.2 mm. New Mexico (Fort 

 Wingate), Schufeldt , otiosus, n. sp. 



