THE COLEOPTERA OF COLORADO. 243 



A. RUSTicus Dej. Colorado, Tike; Bellevue, May. 



A. carbonarius Say. Colorado, Horn. 



A. harrisii Lee. Fort Collins, April. 



A. nigriTa Dej. Cottonwood Gulch, Saguache County, Cockerell. 



A. baltimorensis Say. Fort Collins, April; Alamosa. 



A. piTvchrous Lee. Colorado, Horn. 



A. TERMINATUS Say. Colorado, Ulke. 



A. LUGUBRIS Dej. Colorado, Snow. 



AMPHIZOID.E. 



Amphizoa LECONTEi Matth. Glenwood Springs, at the junction of the 

 Roaring Fork with Grand River, Hubbard; Georgetown, one specimen, 

 Wickham; Mr. Hay ward reports that he and Mr. Bowditch found a 

 specimen floating down stream in the canon of the Big Blue, and about 

 a dozen others under stones at the edge of the river along the Upper 

 San Juan, at an altitude of about 8,000 feet. 



HALIPLID^E. 



Haliplus cribrarius Lee. Garland; Ouray. 



H. RUFICOLUS De Geer. Gunnison, Bowditch; West Cliff; Alamosa; Gar- 

 land. 



CnemidoTUS edentulus Lee. "Kansas, near the Rocky Mountains,"' 

 Leconte. 



DYTISCID^E. 



Laccophilus maculosuS Germ. In the Putnam list; vicinity of Fort Col- 

 lins, March, April and August. 



L. DECIPIENS Lee. Gunnison, Bowditch; Alamosa; West Cliff; Fort Col- 

 lins, August; Denver; Buena Vista. 



L. QUADRIEINEATUS Horn. Colorado, Crotch. 



BiDESSUS affinis Say. Durango and Gunnison, Bowditch; San Luis Val- 

 ley; West Cliff; Garland; Alamosa; Mr. Schwarz reports the variety 

 obscurellus from Garland and I have the form macularis from Colorado 

 Springs. A species of Bidessus closely allied to affinis, if not identical 

 with it, was taken at Ouray. 



B. lacustris Say. Fort Collins, August, in stagnant water. 

 CcEeambuS in^Eouaus Fab. Garland. 



C. PATRUEUS Lee. Mr. Hayward records this species, with a mark of doubt, 



from Horsefly Peak Divide. 

 C. SUTUraus Lee. Fort Collins, August; Placerville, Bowditch. 

 C. SELEATUS Lee. Gunnison, Bowditch; Denver, Packard; Alamosa. 

 C. mediaus Lee. Colorado Springs, June; Buena Vista. 

 C. nubieus Lee. Buena Vista; Colorado Springs, June; Fort Collins, 



August; Florissant, Bowditch. 

 C. impressopunctaTUS Sch. Placerville, Bowditch. A species of this 



genus was taken by Mr. Bowditch at Rico and Alamosa, which he thinks 



may be new. 



