124 AMERICAN COLEOPTERA. 



male, those of the hind feet curved in a plane transverse to 

 the body, their inner face denticulate. Pygidium of female 

 a little concave longitudinally, the tip prolonged and pointed. 

 Length about 3i mm. Sharp gives 4 mm. 



C. ignobilis n. sp. 



Moderately elongate oval, subdepressed, piceous, legs and antennae 

 rufous, club of latter a little darker ; upper surface moderately shin- 

 ing, with recumbent fuscous pubescence ; punctuation close and mod- 

 erately coarse throughout, the punctures on the disk separated as a 

 rule by less than their own diameters. Head § as wide as the pro- 

 thorax. Prothorax slightly more than f as long as wide, the apical 

 width equal to the length, sides broadly arcuate, just visibly rounded 

 in at base, not sinuate before the base angles, which are rather sharply 

 defined and somewhat obtuse ; disk with a very narrow median im- 

 punctate line in basal half. Elytra just perceptibly wider than long, 

 at sides j longer than the prothorax, the sutural length about I the 

 lateral length. Pygidium and propygidium more finely punctate 

 than the elytra. Beneath less shining and rather densely punctate, 

 the abdomen less coarsely and closely so. Length, 3.5 mm. ; width, 

 1.6 mm. 



Santa Rita Mountains, Arizona. 



A single female specimen sent by Prof. Snow is all I have 

 seen of this species, which while quite surely disctinct from 

 any of our described species, seems to possess no characters 

 of special interest. It is apparently nearest niger, differing 

 from that in its narrower form, narrower prothoracic side 

 margins, and entire lack of pronotal impressions. 



C. rickseckeri n. sp. 



Rather broadly oblong oval, convex, sparsely pubescent, black or 

 nearly so, elytra with a small basal pale spot within the humeri, legs 

 rufous or rufo-piceous, antennae rufous, the club piceous. Upper sur- 

 face strongly shining, polished, without trace of alutaceous sculpture 

 except feebly toward the sides and apex of the elytra. Above quite 

 coarsely punctured, more coarsely and closely so toward the sides of 

 the prothorax, more sparsely at the middle, where the punctures are 

 separated by from one to two times their own diameters. Beneath 

 less shining and rather densely punctate throughout. Head a little 

 more than half as wide as the prothorax. Prothorax slightly more 

 than one-half wider than long, arcuately narrowed in front, subparallel 

 basally, not at all sinuate before the hind angles, which are not re- 

 tracted, fairly well defined, a little obtuse. Elytra not apparently 

 wider than the prothorax, \ wider than long, the lateral length about ', 



