246 NATURAL HISTORY BULLETIN. 



Ochthebius discretus Lee. A variety of this species is reported by Mr. 

 Schwarz from Veta Pass, 9,200 feet. 



O. cribricolus Lee. Garland. 



O. HOLM B ERG 1 Maekl. Alamosa; Garland. 



O. uneatus Lee. Colorado, Horn. 



O. INTERRUPTUS Lee. Colorado, Horn; Canon City, Wickham. 



Hydr^na pennsylvanica De Geer. Buena Vista; Colorado Springs. A 

 new species of this genus was found by Mr. Schwarz, "everywhere." 



Hydrophilus Triangularis Say. Poncha Springs, July; Denver, August; 

 Buena Vista. 



Tropisternus dorsaus Brulle. Fort Collins; Denver; Sloan's Lake; Colo- 

 rado Springs; Buena Vista. 



T. glaber Hbst. Berkeley; Denver; Colorado Springs. 



T. caufornicus Lee. Colorado, Horn; Fort Collins. 



T. subl^Evis Lee. Colorado, Ulke. 



T. ellipticus Lee. Pagosa Springs, Bowditch. 



T. STRiOLATUS Lee. Ouray. 



Hydrocharis obTusatus Say. Berkeley, one specimen, May. 



Berosus stylifertjs Horn. Denver, Packard. 



B. infuscaTus Lee. Colorado, Horn. 



B. striaTus Say. Garland; Colorado Springs; Buena Vista; Gunnison, 



Bowditch. 



Limnocharis piceus Horn. Canon City, determined by Dr. Horn. 



Laccobius agiuS Rand. West Cliff; Garland; Florissant; Colorado Springs. 



Philydrus diffusus Lee. Gunnison; Alamosa; Garland; Berkeley; West 

 Cliff. 



P. PERPLEXUS Lee. Garland, Bowditch. 



Hydrocombus n. sp. Pagosa Springs, Bowditch. 



Cymbiodyta moraTA Horn. Canon City; Colorado Springs, June, not un- 

 common. 



Hydrobius scabrosus Horn. Veta Pass, 9,350 feet; San Luis Valley; Up- 

 per San Juan; Mountains southwest of Montrose. 



H. FUSCIPES Linn. Colorado Springs; Leadville; Garland; Veta Pass; 

 Georgetown; Leavenworth Valley; Silver Plume; Ouray. 



Creniphilus subcupreus Say. Garland; West Cliff. 



Cercyon pygm^eus 111. Buena Vista. 



C. Tristis 111. Ouray. Mr. Schwarz reports finding an unnamed species at 



Garland, La Veta and Veta Pass. 



SILPHIDvE. 



Necrophorus marginatus Fab. Fort Collins; Golden; West Cliff; Colo- 

 rado Springs; it is known to occur from July to October. 



N. GUTTULA Mots. Recorded from West Cliff; Little Willow Creek; George- 

 town; between Fort Garland and Costilla; Fort Collins; all except the 

 first and third of these records are for the variety hecate Bland. 



N. pustulaTUS Hersch. The variety mehheimeri Kirby, is known from 

 Montrose and Little Willow Creek, Bowditch. There are several state 

 records without definite locality. 



