632 U. S. NATIONAL MUSEUM BULLETIN 205 



p. 81, Feb. 14, 1949) ; and through Yukon to northern Alberta, Canada; speci- 

 mens from northern Alberta (Wood Buffalo National Park) and from southern 

 Yukon (Pelly River, Canol Road, Mile 95; Lapie River, Mile 132; and Teslin 

 Lake) appear to show intergradation with dorsatum, and presumably likewise 

 do porcupines occurring in extreme northern British Columbia and southwestern 

 Mackenzie District. Northwest Territories (Anderson, Nat. Mus. Canada Bull. 

 102 (1946), p. 173, Jan. 24, 1947). Recorded north to Chandler Lake and 

 John River, Alaska (Rausch, Journ. Mamm., vol. 31, No. 4, p. 466, Nov. 21, 

 1950) . 



Erethizon dorsatum nigrescens J. A. Allen* 



1903. Erethizon epizanthus [sic] nigrescens J. A. Allen, Bull. Amer. Mus. 

 Nat. Hist., vol. 19, p. 558, Oct. 10, 1903. 



1943. Erethizon dorsatum nigrescens Anderson and Rand, Canadian Journ. 

 Res., Ottawa, vol. 21, sect. D, p. 293, Sept. 6, 1943. 



Type Locality. — Shesley River, British Columbia, Canada. Range. — British 

 Columbia from Telegraph Creek south in Coast Mountains to New Westminster 

 District (Alta Lake), in interior to Chilcotin, Okanagan, Rossland (near Wash- 

 ington boundary), Yahk (near Idaho-Montana corner) ; and Jasper and Water- 

 ton Lakes in Rocky Mountains of southwestern Alberta, Canada (Anderson, Nat. 

 Mus. Canada Bull. 102 (1946), p. 173, Jan. 24, 1947) ; and forested parts of 

 Washington, exclusive of Blue Mountains, although extremely rare west of Cas- 

 cades, but occasionally reported as far west as Olympic Peninsula (Dalquest, 

 Univ. Kansas Publ. Mus. Nat. Hist., vol. 2, p. 376, Apr. 9, 1948) . 



Erethizon dorsatum bruneri Swenk* 



1916. Erethizon epixanthum bruneri Swenk, Univ. Stud., Nebraska, vol. 16, 

 p. 117, Nov. 21, 1916. 



1947. Erethizon dorsatum bruneri Anderson, Nat. Mus. Canada Bull. 102 

 (1946), p. 173, Jan. 24, 1947. 



Type Locality. — Three miles east of Mitchell, Scotts Bluff County, Nebr. 

 Range. — From southern Saskatchewan, Canada (Anderson, loc. cit.) southward 

 to western Oklahoma (McMurry, Journ. Mamm., vol. 25, No. 4, p. 413, Dec. 12, 

 1944) ; west to Weld County, Colo. (Warren, The mammals of Colorado, . . . , 

 p. 244, 1942). 



Erethizon dorsatum epixanthum Brandt* 



1835. Erethizon epixanthus, Brandt, Mem. Acad. Imp. Sci., St. Petersbourg, 



ser. 6, Sci. Math. Phys. et Nat. vol. 3, p. 390. 

 1884. Erethrizon [sic] dorsatus epixanthus True, Proc. U. S. Nat. Mus., vol. 



7 (App., Circ. 29), p. 600, Nov. 29, 1884. 

 1943. Erethizon dorsatum epixanthum Anderson and Rand, Canadian Journ. 



Res., Ottawa, vol. 21, sect. D, p. 293, Sept. 6, 1943. 

 Type Locality. — California (see Hollister, Canadian Alpine Journ., Special 

 Number, p. 27, Feb. 17, 1913). Range. — Mountains of northern part of Cali- 

 fornia interiorly of humid coast belt from Sequoia National Park and Whitney 

 Creek, 10,850 feet, in Tulare County northward along Sierra Nevada; reported 



