AMERICAN COLEOPTERA. 279 



The three species associated ia the table have very little in commoa 

 except the sinuation of the thorax and the retracted angles, melanop- 

 terus being allied to pal/ipennis, decipiens to discoideua, while the 

 present species stands rather alone, resembling feebly by its shining 

 surface anttquus. 



Occurs in the West Indies, Georgia and Florida. 



C decipiens n. sp. — Oblong oval, depressed, piceous, feebly shining, 

 sparsely pubescent, elytra paler. Head moderately punctured. Thorax one- 

 third wider than long, base slightly narrower than apex, sides moderately 

 arcuate slightly sinuate posteriorly, hind angles distinct but slightly retracted, 

 disc flat, surface not densely but equally punctate. Scutellum sparsely punc- 

 tate. Elytra a little longer than wide conjointly, slightly narrowed toward the 

 apex, surface more finely punctured than the thorax and distinctly alutaceous. 

 Abdomen a little more coarsely punctured than the elytra. Prosternum, body 

 and abdomen beneath moderately densely and equally punctured. Length 

 .12 — .14 inch; 3 — 3.5 mm. 



Sexual characters as in hrachi/pterus. The posterior tibiae are also 

 somewhat stouter in the male. This species resembles discoideus, but 

 is distinct by the more evident punctuation of the surface, the sides 

 of thorax perceptibly sinuate at base, the punctured prosternum, and 

 the absence of discal elytral spot. 



Occurs in California, at Tejon, in Arizon#and Lower California. 



C. niger Say. — Oval, slightly oblong, piceous, subopaque, sparsely pubes- 

 cent. Head densely punctured. Thorax one-half wider than long, narrowed 

 in front, sides regularly arcuate, base slightly narrowed and on each aide 

 sinuate, hind angles moderately prominent, disc slightly flattened, a feeble 

 oblique impression at base each side of scutellum, surface densely punctured. 

 Scutellum moderately densely punctured. Elytra conjointly as wide as long, 

 slightly narrowed posteriorly, humeral angles prominent, disc slightly flattened, 

 surface densely punctured. Abdomen above more finely and rather less densely 

 punctured than the elytra. Surface beneath moderately densely punctate. 

 Length .12— .18 inch; 3—4,5 mm. 



The males have the additional abdominal segment; tibiae similar in 

 the sexes. 



A specimen in my cabinet which I refer to this species as a variety 

 has the elytra rufous in great part, the sides posteriorly, apex and 

 suture being piceous, the legs also are rufous. 



Occurs everywhere in our fauna from Canada to iVrizona, and the 

 variety above in California. 



C marginatum Erichs. — Oval, slightly oblong, sides of thorax and elytra 

 continuous, rufous or rufo-piceous, tip of elytra somewhat darker, surface 

 moderately shining, sparsely pubescent. Head moderately densely punctured. 

 Thorax nearly twice as wide as long, narrowed in front, sides straight, slightly 



