1931. _Ochotona princeps howelli_ Borell, Jour. Mamm., 12:306, August 24, type from 7500 ft., near head of Bear Creek, summit of Smith Mtn., S end Seven Devils Mts., Adams County, Idaho. _Marginal records._--Idaho: _½ mi. E Black Lake_ (Davis, 1939:350); type locality. OCHOTONA PRINCEPS INCANA A. H. Howell. 1919. _Ochotona saxatilis incana_ A. H. Howell, Proc. Biol. Soc. Washington, 32:107, May 20, type from 12,000 ft., Pecos Baldy, Santa Fe County, New Mexico. 1924. _Ochotona princeps incana_ A. H. Howell, N. Amer. Fauna, 47:25, September 23. _Marginal records._--Colorado: Medano Creek (A. H. Howell, 1924:25). New Mexico: Wheeler Peak (V. Bailey, 1932:64); type locality. OCHOTONA PRINCEPS JEWETTI A. H. Howell. 1919. _Ochotona schisticeps jewetti_ A. H. Howell, Proc. Biol. Soc. Washington, 32:109, May 20, type from head of Pine Creek, near Cornucopia, S slope Wallowa Mts., Baker County, Oregon. _Marginal records_ (A. H. Howell, 1924:42).--Oregon: Wallowa Lake; Cornucopia, near head East Pine Creek; _Anthony_; Strawberry Butte; Austin. OCHOTONA PRINCEPS LEMHI A. H. Howell. 1919. _Ochotona uinta lemhi_ A. H. Howell, Proc. Biol. Soc. Washington, 32:106, May 20, type from Lemhi Mountains, 10 mi. W Junction, Lemhi County, Idaho. 1924. _Ochotona princeps lemhi_ A. H. Howell, N. Amer. Fauna, 47:16, September 23. _Marginal records._--Idaho: Elk Summit, about 15 mi. SE Warren (A. H. Howell, 1924:18); mts. E of Leadore (_ibid._); mts. E of Birch Creek (_ibid._); Ketchum (_ibid._); _Stanley Lake_ (_ibid._); 5 mi. W Cape Horn (Davis, 1939:348). OCHOTONA PRINCEPS LEVIS Hollister. 1912. _Ochotona levis_ Hollister, Proc. Biol. Soc. Washington, 25:57, April 13, type from Chief Mountain [= Waterton] Lake, Alberta. 1924. _Ochotona princeps levis_, A. H. Howell, N. Amer. Fauna, 47:16, September 23. _Marginal records_ (A. H. Howell, 1924:16).--Alberta: type locality. Montana: Little Belt Mts.; Belt Mts.; Chief Mountain Lake. OCHOTONA PRINCEPS LUTESCENS A. H. Howell. 1919. _Ochotona princeps lutescens_ A. H. Howell, Proc. Biol. Soc. Washington, 32:105, May 20, type from approximately 8000 ft., Mount Inglismaldie, near Banff, Alberta. _Marginal records._--Alberta: Mistaya Creek, Banff-Jasper Highway (Anderson, 1947:96); Canmore (A. H. Howell, 1924:15); Mt. Forget-me-not, 50 to 75 mi. SW Calgary (_ibid._). OCHOTONA PRINCEPS MOOREI Gardner. 1950. _Ochotona princeps moorei_ Gardner, Jour. Washington Acad. Sci., 40:344, October 23, 1950, type from 10,000 ft., 1 mi. NE Baldy Ranger Station, Manti Nat'l Forest, Sanpete County, Utah. Known from type locality only. OCHOTONA PRINCEPS MUIRI Grinnell and Storer.