COLEOPTERA OF SOUTHERN CALIFORNIA. 213 



are dissimilar. In these two species the disparity is 

 very striking; but Crotch apparently failed to note its 

 existence in numerous others. In C. medialis, C. fra- 

 ternus, C. femoratus and C. nubilus, and perhaps others, 

 the anterior (inner) claw is slightly broader and more 

 strongly bent toward the base than its fellow, but the 

 claws do not differ materially in length. In C. f rater- 

 nus the front tarsi are much more strongly dilated in 

 the male than in the same sex of C. medialis. C. lutes- 

 cens is certainly very close to C. medialis, and I have 

 not discovered any reliable means of separation; my 

 specimens, however, of C. lutescens are all female, and 

 it is possible the male may show good characters for 

 separation. 



10. Ochthebius wickhami, sp. nov. 



Piceo-testaceous, head darker, legs pale; surface shining, feebly bronzed. 

 Sides of thorax arcuate to middle, where they are slightly sinuate and 

 abruptly, deeply emarginate, the angle prominent and acute; transparent 

 border wide behind the sinuation, exceedingly narrow in front, but 

 extending to the apical angles; disk sparsely punctate; median line deep, 

 entire; anterior discal foveae wanting, posterior deep; lateral grooves as 

 in 0. discretus. Elytra broad, sides arcuate; striae feebly impressed, punc- 

 tures not closely placed; intervals much wider than the striae on the disk, 

 where they are nearly flat; toward the sides the striae are deeper and 

 closer, the intervals more convex. 



Length, 2 mm. 



Taken in numbers at Winslow, Arizona, by Mr. 

 Wickham. 



The form of the thorax is very much like that of 0. 

 discretus.* 0. wickhami comes under "4" of Horn's 

 table, and should precede 0. rectus under the caption 

 sides of thorax arcuate in front, transparent border 

 narrowly attaining the front angles. The author dedi- 

 cates the species with much pleasure to its discoverer. 



*See Horn's figure, Trans. Am. Ent. Soc , Vol. XVII, PI. II. 



