16 THE BEAVER 
RACES OF THE BEAVER 
As practically always occurs when an animal’s habitat 
includes a considerable territory, especially when the cli- 
mate and other features are greatly varied, as is the case 
with the beaver, this animal has developed into a number of 
geographic races, whose names, with their type localities! 
are given below. No attempt is made to give descriptions 
of these forms. It is sufficient to say here that they differ 
in size, proportions, color, and in the characteristics of the 
skull. 
Castor canadensis canadensis Kuhl, Canadian Beaver. Hudson Bay. 
Castor canadensis leucodonta Gray, Pacific Beaver. Vancouver Island. 
Castor canadensis frondator Mearns, Sonora Beaver; Broad-tailed Beaver. 
San Pedro River, Mexico, near Mexican Boundary Monument No. 98. 
Castor canadensis carolinensis Rhoads, Carolina Beaver. Dan River, near 
Danbury, Stokes County, North Carolina. 
Castor canadensis pacificus Rhoads, Washington Beaver. Lake Kichelus or 
Kecheelus, Kittitas County, Washington. 
Castor canadensis texensis Bailey, Texas Beaver. Cummings Creek, 
Colorado County, Texas. 
Castor canadensis phaeus Heller, Admiralty Beaver. Pleasant Bay, 
Admiralty Island, Alaska. 
Castor canadensis mexicanus Bailey, Rio Grande Beaver. Ruidoso Creek, 
6 miles below Ruidoso, New Mexico. 
Castor canadensis michiganensis Bailey, Woods Beaver. Tahquamenaw 
River (5 miles above falls), Luce County, Michigan. 
Castor canadensis beluge Taylor, Cook Inlet Beaver. Beluga River, Cook 
Inlet region, Alaska. 
Castor subauratus subauratus Taylor, Golden Beaver. Grayson, Stanislaus 
County, San Joaquin River, California. 
Castor subauratus shastensis Taylor, Shasta Beaver. Cassel, (Hat Creek) 
Pit River, Shasta County, California. 
Castor cacaetor Bangs, Newfoundland Beaver. Near Bay St. George, 
Newfoundland. 
1 The type locality is the locality from which came the specimen from 
which the first description of a species was made. 
