152 . [LeOonte. 



9. C. carinicollis, n. sp. 



Black, pubescence short and dense, gray. Beak shorter than the pro- 

 thorax, stout, a little thicker at the tip, coarsely punctured, not strongly 

 carinate for more than half its length, carina terminating at each end 

 in a puncture, with a broad groove each side extending from the tip about 

 one-fourth the length. Prothorax longer than wide, narrowed in front, 

 sides broadly rounded, base oblique, broadly angulated and rounded at the 

 middle, densely punctulate, sparsely and irregularly coarsely punctured, 

 basal excavation feeble, Y-shaped, medial carina strong, extending from 

 tip nearly to base. Elytra a little wider than the prothorax, broadly im- 

 pressed around the scutellum and also near the humeri, which are oblique 

 and less rounded than usual, sides straight, then obliquely narrowed, tip 

 obtusely rounded, not acuminate ; strise composed of deep separate, but 

 not very distant punctures, first and second, sixth, seventh, and eighth in- 

 terspaces less mottled with pubescence than the others. Hind tarsi with 

 the first jo'int longer and narrower than the second, third wider, broadly 

 bilobed, all of them spongy beneath, with a narrow median groove. Length 

 13.5mm.; .53 inch. 



One specimen collected by me in Colorado. This species is of nearly the 

 same form as C. trimttatus, but the elytra are more obliquely narrowed 

 near the tip, and the other characters are very different. The hair seems 

 to be abraded from the head and prothorax. The scutellum is narrow but 

 more obvious in this than in the other species. 



10. C. vittatus Kirby, Fauna Bor. Am. iv, 199. 



Black, clothed with very fine short pruinose pubescence ; beak stout, a 

 little wider at tip, feebly carinate for more than half its length, with a 

 broad frontal concavity, densely punctured above, sparsely and more 

 coarsely at the sides. Prothorax longer than wide, sides nearly parallel, 

 suddenly rounded and narrowed near the tip, base emarginate each side, 

 middle lobe prominent, rounded, side angles acute; disc densely punctured 

 and cribrate, basal excavation narrow, deep, medial carina distinct, ex- 

 tending from the tip to the excavation; sides and two dorsal vittse which 

 are broad at base and narrow in front, pubescent. Elytra with rows of 

 deep, rather approximate punctures, interspaces flat, third and seventh less 

 pubescent, and therefore darker; base flattened around the scutellum, and 

 again near the humeri, which are rounded ; sides parallel, then obliquely 

 narrowed, tips obtusely rounded. Hind tarsi with the first joint a little 

 longer, second and third spongy beneath, the latter broader and bilobed. 

 Length 8 mm. ; .32 inch. 



One specimen from Oregon, and two from California. 



11. C. sparsus, n. sp. 



Black, pubescence less fine, yellowish-gray. Beak cylindrical, not very 

 stout, not wider at tip, punctured, scarcely carinate, with a broad frontal 

 impression. Prothorax a little longer than wide, very slightly narrowed in 

 front except near the tip, where it is suddenly rounded and narrowed and 



