RODENTIA: CASTORIDAE 427 



(V. Bailey, North Amer. Fauna No. 53 (December 1931), pp. 211-212, Mar. 

 1, 1932) . 



Castor canadensis repentinus Goldmanf* 



1932. Castor canadensis repentinus Goldman, Journ. Mamm., vol. 13, No. 3, 

 p. 266, Aug. 9, 1932. 



Type Locality. — Bright Angel Creek, Grand Canyon of Colorado River, 

 Coconino County, Ariz. Altitude, 4,000 feet. Range. — In Nevada, probably 

 formerly Virgin and Muddy Rivers (Hall, Mammals of Nevada, p. 488, July 1, 

 1946) ; in Arizona, vicinity of Colorado River from Grand Canyon to delta 

 (Goldman, loc. cit.) ; in California, Colorado River from Nevada line near 

 Needles, San Bernardino County, to Mexican border, below Fort Yuma, Imperial 

 County (Grinnell, Univ. California Publ. Zool., vol. 40, No. 2, p. 167, Sept. 26, 

 1933), along Alamo River and larger distributory canals from Colorado River 

 in Imperial Valley (Dixon, Journ. Mamm., vol. 3, No. 3, p. 140, Aug. 4, 1922) ; 

 eastward to drainages of Colorado and Green Rivers south of Tavaputs Plateau 

 in Utah (Durrant, Univ. Kansas Publ. Mus. Nat. Hist., vol. 6, p. 291, Aug. 10, 

 1952). 



Castor canadensis subauratus Taylor* 



1912. Castor subauratus Taylor, Univ. California Publ. Zool., vol. 10, No. 7. 

 p. 167, May 21, 1912. 



1933. Castor canadensis subauratus Grinnell, Univ. California Publ. Zool., 

 vol. 40, No. 2, p. 166, Sept. 26, 1933. 



Type Locality. — Grayson, San Joaquin River, Stanislaus County, Calif. 

 Range.- — Lower courses of San Joaquin and Sacramento Rivers, and lower 

 portions of larger tributaries of these main rivers, from Tulare Lake (formerly), 

 Kings County, and from Kings River, near Sanger (formerly) and at Mendota, 

 in Fresno County, north to Sacramento River and Butte Creek, north of Marys- 

 ville Buttes, and at one time to McCloud and upper Sacramento Rivers, in 

 Shasta County; vertical range, below 1,000 feet; zonal range, Lower and Upper 

 Sonoran (Grinnell, loc. cit.) . 



Castor canadensis shastensis Taylorf * 



1916. Castor subauratus shastensis Taylor, Univ. California Publ. Zool., vol. 

 12, No. 12, p. 433, Mar. 20, 1916. 



1933. Castor canadensis shastensis Grinnell, Univ. California Publ. Zool., vol. 

 40, No. 2, p. 166, Sept. 26, 1933. 



Type Locality. — Cassel, on Hat Creek, near Pit River, Shasta County, Calif. 

 Range. — Pit River basin in northeastern California: recorded from Pit River, 

 above Narrows, north to Willow Creek and Steele Meadow, near Clear Lake, and 

 east to Lassen Creek, east of Goose Lake, and to North Fork of Pit River above 

 Alturas; vertical range, 3,000 feet (on Pit River, Shasta County) up to between 

 6,000 and 7,000 feet (on Lassen Creek, west slope of Warner Mountains) ; zonal 

 range, chiefly Upper Sonoran (Grinnell, Univ. California Publ. Zool., vol. 40, 

 No. 2, p. 166, Sept. 26, 1933) ; in Oregon, from Thomas Creek, a small branch 

 of Cottonwood Creek, which flows into northwestern corner of Goose Lake, and 

 probably Klamath section, Lost River, Sprague River, and Yamsay Mountains 

 (V. Bailey, North Amer. Fauna No. 55 (June), pp. 222-223, Aug. 29, 1936). 



