600 U. S. NATIONAL MUSEUM BULLETIN 205 



Nat. Hist., vol 2, p. 354. Apr. 9, 1948) ; and northward along coast of British 

 Columbia from Fraser River at least to Dean Channel, inland to Alta Lake, 

 Hagensborg, Stuie, and Mount Brilliant, Rainbow Mountains (Anderson and 

 Rand, Canadian Field-Nat., vol. 58, No. 1, p. 19, Apr. 1, 1944). 



Microtus longicaudus halli Hayman and Holt* 



1931. Microtus mordax angustus Hall, Univ. California Publ. Zool., vol. 37, 

 No. 1, p. 13, Apr. 10, 1931. (Not Microtus angustus Thomas, Proc. Zool. 

 Soc. London, 1908, p. 108.) 

 1941. Microtus mordax halli Hayman and Holt, in Ellerman, The families and 

 genera of living rodents, vol. 2, p. 603, Mar. 21, 1941. (Substitute for 

 angustus Hall.) 

 1948. Microtus longicaudus halli Dalquest, Univ. Kansas Publ. Mus. Nat. 



Hist., vol. 2, p. 353, Apr. 9, 1948. 

 Type Locality. — Godman Springs, Blue Mountains, Columbia County, Wash. 

 Altitude, 5,700 feet. Range. — Restricted to Blue Mountains of southeastern 

 Washington. 



Microtus longicaudus vellerosus J. A. Allen* 



1899. Microtus vellerosus J. A. Allen, Bull. Amer. Mus. Nat. Hist., vol. 12, 

 p. 7, Mar. 4, 1899. 



1899. Microtus cautus J. A. Allen, Bull. Amer. Mus. Nat. Hist., vol. 12, p.7, 

 Mar. 4, 1899. (Hells Gate, Liard River, British Columbia, Canada.) 



1944. Microtus longicaudus vellerosus Anderson and Rand, Canadian Field- 

 Nat., vol. 58, No. 1, p. 20, Apr. 1, 1944. 



Type Locality. — Upper Liard River, British Columbia, Canada. Range. — 

 Southern Yukon (Canol Road-Lapie River, Macmillan Pass, Nisutlin River, 

 Ross River, Sheldon Lake) and adjacent parts of Alaska, southwestern Mackenzie 

 District in Northwest Territories, and southward over British Columbia (exclud- 

 ing coastal mountains and interior dry belt) to Pend-d'Oreille, Rossland, and 

 Yahk; on western slope of Rocky Mountains to Fernie and Morrissey and on 

 Alberta side of Mountains to Jasper, Banff, Crowsnest, and Waterton Lakes 

 where it intergrades with mordax; two isolated specimens from Great Plains 

 region in southern Alberta just north of Sweet Grass Hills are somewhat larger 

 and paler but are provisionally referred to vellerosus (Anderson, Nat. Mus. 

 Canada Bull. 102 (1946), p. 159, Jan. 24, 1947). 



Microtus longicaudus littoralis Swarth* 



1933. Microtus mordax littoralis Swarth, Proc. Biol. Soc. Washington, vol. 



46, p. 209, Oct. 26, 1933. 

 1938. Microtus longicaudus littoralis Goldman, Journ. Mamm., vol. 19, No. 



4, p. 491, Nov. 14, 1938. 

 Type Locality. — Shakan, Prince of Wales Island, southeastern Alaska. 

 Range. — Mainland coast and most of the islands of southeastern Alaska; along 

 coast from Yakutat south at least to Bradfield Canal; and most of the islands of 

 Alexander Archipelago that lie east of Chatham Strait and to the southward. 



Microtus coronarius Swarth 



1911. Microtus coronarius Swarth, Univ. California Publ. Zool., vol. 7, No. 

 2, p. 131, Jan. 12, 1911. (See also Swarth, Proc. Biol. Soc. Washington, 

 vol.46, p. 211, Oct. 26, 1933.) 



