222 BULLETIN 79, UNITED STATES NATIONAL MUSEUM. 



t*Microtus mordax bernardinus Merriam. 



1908. Microtus mordax bernardinus Merriam, Proc. Biol. Soc. 



Washington, vol. 21, p. 145. June 9, 1908. 

 Type Locality.-s-DiT Lake, San Bernardino Mountains, Cal- 

 ifornia. Altitude, 9,000 feet. 



t*Microtus macrurus Merriam. 



1898. Microtus macrurus Merriam, Proc. Acad. Nat. Sci. Phil- 

 adelphia, p. 353. October 4, 1898. 



Type Locality. — Lake Cushman, Olympic Mountains, Wash- 

 ington. 



Range. — The typical form: Olympic Mountains. With slight 

 variation along the coast strip of British Columbia and Alaska 

 north to Yakutat. 



Microtus coronarius Swarth. 



1911. Microtus coronarius Swarth, Univ. Calif. Publ. Zool., vol. 7, 



p. 131. January 12, 1911. 

 Type Locality. — Egg Harbor, Coronation Island, Alaska. 



t*Microtus angusticeps Bailey. 



1898. Microtus angusticeps Bailey, Proc. Biol. Soc. Washington? 

 vol. 12, p. 86. April 30, 1898. 



TiPE Locality. — Crescent City, Del Norte County, California. 



Range. — Coast region or northwestern California and south- 

 western Oregon. 



t*Microtus alticola alticola (]\ierriam). 



1890. Arvicola (Mynomes) alticolus Merriam, North. Amer. 

 Fauna No. 3, p. 67. September 11, 1890. 



1895. Microtus alticolus Allen, Bull. Amer. Mus. Nat. Hist., 

 vol. 7, p. 219. June 29, 1895. 



Type Locality. — Little Spring, San Francisco Mountain, Coco- 

 nino County, Arizona. Altitude, 8,200 feet. 



Range. — Boreal zone of San Francisco Mountain, from 8,200 

 feet altitude up to timber line at 11,000 feet. 



Microtus alticola leucophaeus (Allen). 



1894. Arvicola leucophseus Allen, Bull. Amer. Mus. Nat. Hist., 



vol. 6, p. 320. November 7, 1894. 

 1900. Microtus alticolus leucophseus Bailey, North Amer. Fauna, 



No. 17, p. 53, June 6, 1900. 

 Type Locality. — Graham Mountains, Graham County, Arizona. 

 Range.— Known only from the type locality. 



