CHECK LIST OF PISHES OP THE DOMINION. 101 



444. Cottus seniiscaber Cope. 

 Rocky Mountain Bull-head. 

 Fluviatile: in clear streams. 



Both slopes of the Rocky Mountain region: ranging from the Fraser River system, British 

 Columbia, southward to New Mexico: "its eastern and northern limits not well ascer- 

 tained" (Jordan and Evermann). 



445. Cottus ictalops Rafinesque. 

 Blop. 



Lacustrine and fluviatile: clear lakes and rocky brooks, and lime-stone springs: enters 



caves. 

 Provinces of New Brunswick, Quebec, and Ontario: St. Lawrence River and Great Lakes 



region: extending in the United States from the eastern States to the Dakotas and 



southward to southern States. 



446. Cottus ricei Nelson. 

 Lacustrine. 



Recorded from Lakes Ontario and Michigan. 



447. Cottus onychus* Eigenmann and Eigenmann. 

 Fluviatile. 



Recorded from Bow River, Calgary, Alberta. 



448. Cottus pollicaris Jordan and Gilbert. 

 Olivaceous Miller's Thumb. 

 Lacustrine. 



Recorded from Manitoba (Prince, 1909); and from off Racine, Lake Michigan, Wisconsin 

 (Jordan and Gilbert, 1882, as Uranidea pollicaris). 



449. Cottus cognatus Richardson. 

 Great-Bear-Lake-Bullhead. 

 Lacustrine. 



Great Bear Lake, Mackenzie District (Richardson, 1836): Lake Bennett, British Columbia 

 (Evermann and Goldsborough, 1907): Labradorf (Kendall, 1909). 

 * 



450. Cottus aleuticus Gilbert. 

 Fluviatile, and in brackish water. J 



Recorded from Departure Bay, Vancouver Island, and " very abundant in the small streams 

 passing through the village of Iliuliuk, Unalaska" — "probably the Uranidea micro- 

 stoma of Lockington, based on specimens collected near St. Paul, Kadiak" — "extends 

 southward in the Coast Range to Monterey" (Jordan and Evermann). 



*"Not seen by us and perhaps not different from Cottus pollicaris." Jordan and Evermann. 



+"Two specimens collected in North West River, July 27, are doubtfully identified as this species." Kendall. 

 Recorded also from Labrador by Bowdoin in 1891, but queried by Kendall. 



J"A specimen transferred to the salt water aquarium on the Albatross seemed to suffer no inconvenience from 

 the change of water and lived for several days." Jordan and Evermann. 



