THE COLEOPTERA OF COLORADO. 245 



A. i,ECONTEi Cr. South Fork of San Miguel; Williams River; West Cliff. 



A. GRiSEiPENNis Lee. Colorado Springs; Georgetown; Silver Plume; 

 Leavenworth Valley; Ouray; Red Mountain Road, 10,000 to 11,000 feet. 



A. OBijTERATuS Lee. Southern Colorado and northern New Mexico, Le- 

 conte; West Cliff; Placerville; Rico; Leavenworth Valley, 10,000 to 

 11,000 feet. 



A. TRISTIS Aube. Garland; Rico. 



RhanTus divisuS Aube. Florissant; Rico; Gunnison; Dillon, September, 

 Cockerell. 



R. binotatus Harr. South Park, August, Oslar; Rio Grande, Ulke; Floris- 

 sant; Gunnison; South Fork of San Miguel; Rico; Cochetopa Pass; Den- 

 ver, August; Berkeley, May; West Cliff; Colorado Springs; Fort Collins 

 and vicinity, April, May and August. 



R. BISTRIATUS Berg. Gunnison, Bowditch. 



CoiyYMBETES longulus Lee. Gunnison, Bowditch. 



C. SCUi^PTius Harr. In both Ulke's and Putnam's lists; Fort Garland. 

 DyTiscus marginicollis Lee. Colorado, Putnam and Ulke; Durango, 



July, Oslar; Upper San Juan, Hayward. 



D. dauricus Gebl. Pagosa, Ulke. 



Aciuus SEMISULCATUS Aube. Mountains southwest of Montrose. 



A. FRATERNUS Harr. Alamosa. 



GraphoderES CINEREUS Linn. Fort Collins, July and August. 



GYRINID^E. 



GvrinuS /ENEOI.US Lec. Gunnison, Bowditch. 



G. aouiris Lec. San Luis Valley; Durango, Bowditch. 



G. macuuvenTris Lec. San Juan Valley, Bowditch; Saguache Creek, 



Saguache County, October, Cockerell, determined by Horn. 

 G. canadensis Reg. Durango; Montrose; San Juan Valley; Gunnison; all 



of these records are from Mr. Bowditch. 

 G. affinis Aube. Colorado, Ulke. 

 G. anaeis Say. Dolores, June. 



G. marinus Gyll. Gunnison and Durango, Bowditch. 

 G. boreaus Aube. Alamosa. 

 Dineutes assimius Aube. Colorado, Roberts, Trans. Am. Ent. Soc, XX, 



285. 



HYDROPHILID^e. 



Helophorus OBtONGus Lec. Placerville; Garland; Alamosa; Veta Pass, 



9,500 feet. 

 H. I.ACU3TRIS Lec. Garland; Alamosa; San Luis Valley; Little Willow 



Creek. 

 H. nftiduiajS Lec. Leadville; Leavenworth Valley, 10,000 to 11,000 feet;, 



Montrose; Little Willow Creek. 

 H. linearis Lec. Colorado Springs. 

 H. uneaTus Lec. Arapahoe Peak, 11,000 to 12,000 feet, Packard; Garland; 



Mountains southwest of Montrose; South Fork of San Miguel. 



V-3 4 



