AMERICAN COLEOPTERA. 281 



C discoi<lens Lee. — Oval, slightly oblong, depressed, color variable, 

 elytra i^ith discal paler spot more or less evident, surface moderately shining, 

 very sparsely pubescent. Head sparsely, rather finely punctate. Thorax one- 

 half wider than long, as wide at apex as at base, sides moderately arcuate, 

 hind angles distinct, surface moderately coarsely and densely punctate, not 

 more densely at the sides, intervals obsoletely alutaceous. Scutellum sparsely 

 punctate. Elytra longer than wide conjointly, slightly broader behind, sur- 

 face punctured similarly to the thorax but more obsoletely near the apex. 

 Abdomen above more sparsely and finely punctured than the elj'-tra. Pro- 

 sternum nearly smooth, body sparsely punctate, abdomen more distinctly 

 punctate, more densely on the last two segments. Legs piceo-testaceous. 

 Length .10— .12 inch; 2.5—3 mm. 



The males are as in hracliypterus. 



The color is variable from rufo-piceous to piceous, in the latter 

 forms the elytra have a large discal pale spot on each, which is move 

 or less distinct on all specimens. 



The paler varieties of this species might readily be mistaken 

 for decipiens, but the thoracic and prosternal characters will dis- 

 tinguish them. 



Occurs from Tejon to Mariposa, California. 



C antiquum Mels. — Oblong, piceous, moderately shining, base of elytra 

 rufous gradually passing to piceous. Head rather sparsely punctate. Thorax 

 one-third wider than long, base and apex equal, sides feebly arcuate, hind 

 angles rectangular, surface sparsely punctured at middle, more finely and 

 densely at the sides. Scutellum sparsely punctate. Elytra longer than wide 

 conjointly, slightly narrower toward apex, surface rather coarsely but sparsely 

 punctate. Abdomen a little more densely punctured than the elytra. Pro- 

 eternum and metasternum at sides coarsely and moderately densely punc- 

 tured, abdomen less densely and more finely punctured. Legs rufous. Length 

 .10 inch; 2.5 mm. 



The males have the usual inflexed pygidial segment, and in addition 

 the hind tibiae are slender at base and suddenly broader at apical half 

 as in Epurxa luteola. (PI. Ill, fig. 21). 



The color of this species is dark piceous, the anterior margin of the 

 head and the sides of the thorax inclining to rufous. The basal half 

 of the elytra is usually rufous, sometimes a narrow basal border only 

 which extends along the sides and suture. 



Occurs in the Middle and Southern States. 



C01.ASTUS Erichs. 

 Our species are few in number and apart from the usual specific 

 differences present no marked peculiarities. Their form is either 

 broadly oval or oblong, usually much depressed, the surface punctured 

 and sparsely pubescent. The prosternum at tip is very distinctly 

 broader behind the coxae, but in truncatus the anterior coxEe are very 



TRANS. AMER. ENT. SOC. VII. (36) JULY, 1879. 



