THE CANADIAN ENT(JMOLOGIST. 43 



Creviastochilus quadratics^ n. s p. 



Black, subopaque, above with very sparse short brownish erect or 

 suberect hairs which become on the pronotal disk distinctly squamiform, 

 varying from two to three times as lotig as wide ; hairs beneath sparse and 

 very short, stiff and setiform. Mentum deeply and regularly cupuliform, 

 the margin entire. Head as in schaiimii and westwoodi. Prothorax 

 nearly one-half wider than long, widest across the hind angles which are 

 not at all retracted, sides very broadly and just visibly sinuate before the 

 hind angles, arcuately narrowed in front, the apex 35 as wide as the 

 base ; front angles foveate, hind angles rectangular, triangularly smooth 

 above, not limited within by an impression ; disk broadly convex, median 

 line impressed, punctures coarse and shallow, dense at sides, well separated 

 toward the middle. Elytra moderately flattened, rather more so than in 

 westwoodi, sculpture as in the latter species. Pygidium coarsely cribrate 

 punctate. Body beneath coarsely moderately closely punctate. Tibise 

 distinctly less broad than in westwoodi ; front tarsi short, passing the apex 

 of the tibiae by only the terminal joint, or slightly more ; middle tarsi sub- 

 equal in length to the tibiae ; hind tarsi a little shorter than the tibiœ. 

 AU the tarsal joints are concavely compressed laterally, more strongly so 

 basally, so that when viewed from above the joints appear much narrower 

 at base. 



Length 12.5-14 mm.: width 5-5.8 mm. 



Described from three examples sent by Mr. Junius Henderson, of the 

 University of Colorado, who took them at Ft. Mojave on the Colorado 

 River in Western Arizona, March 16, 1911. 



As indicated in the descrption, this insect is most nearly related to 

 C. westwoodi, to which the student would be led by attempting to identify 

 it by Horn's table of the genus. It differs markedly from that and other 

 allied species, however, by the thorax not being narrowed behind ; the 

 pronotum is also more coarsely and less closely punctured toward the 

 middle, the erect hairs are here more truly scales, the pygidium is more 

 coarsely punctured, the tibiae less stout, the front tarsi shorter and the 

 mentum more deeply concave. The peculiar concave compression of the 

 tarsal joints is not closely approached by any other species known to me. 



Lachnosterna Carolina, n. sp. 



Moderately elongate, cylindrical, entirely rather pale rufo-testaceous, 

 surface moderately shining. Clypeus broadly feebly emarginate, moderately 

 reflexed, surface closely punctate, the front a little less densely so. 



