1913. _Ochotona fenisex_ Osgood, Proc. Biol. Soc. Washington, 26:80, March 22 (substitute for _minimus_ Lord, type from 7000 ft., Ptarmigan Hill, near head of Ashnola River, Cascade Range, British Columbia). 1924. _Ochotona princeps fenisex_, A. H. Howell, N. Amer. Fauna, 47:28, September 23. 1863. _Lagomys minimus_ Lord, Proc. Zool. Soc. London, p. 98. (Not of Schinz, 1821.) 1899. _Ochotona minimus_, Bangs, Proc. New England Zool. Club, 1:39, June 5. _Marginal records._--British Columbia: Okanagan (A. H. Howell, 1924:30). Washington: Horseshoe Basin, "near" Mt. Chopaka (_ibid._); mts. near Wenatchee (_ibid._); Steamboat Mtn. (Dalquest, 1948:380); Easton (_ibid._); Lyman Lake (_ibid._); Barron (A. H. Howell, 1924:30). British Columbia: Tulameen (_ibid._); 2500 ft., mts. W Okanagan Lake (_ibid._). _Ochotona princeps figginsi_ J. A. Allen. 1912. _Ochotona figginsi_ J. A. Allen, Bull. Amer. Mus. Nat. Hist., 31:103, May 28, type from Pagoda Peak, Rio Blanco County, Colorado. 1924. _Ochotona princeps figginsi_, A. H. Howell, N. Amer. Fauna, 47:21, September 23. _Marginal records_ (A. H. Howell, 1924:22).--Wyoming: Bridger Peak, Sierra Madre. Colorado: Mt. Zirkel; Trappers Lake; _Crested Butte_; Irwin; type locality; Sand Mtn., 9 mi. SW Hahns Peak P. O. OCHOTONA PRINCEPS FUMOSA A. H. Howell. 1919. _Ochotona fenisex fumosa_ A. H. Howell, Proc. Biol. Soc. Washington, 32:109, May 20, type from Permilia Lake, W base Mt. Jefferson, Linn County, Oregon. 1924. _Ochotona princeps fumosa_ A. H. Howell, N. Amer. Fauna, 47:33, September 23. _Marginal records_ (A. H. Howell, 1924:34).--Oregon: About 900 ft., 15 mi. above Estacada; Paulina Lake; _Three Sisters_; Lost Creek Ranger Station, 10 mi. SE McKenzie Bridge. OCHOTONA PRINCEPS FUSCIPES A. H. Howell. 1919. _Ochotona schisticeps fuscipes_ A. H. Howell, Proc. Biol. Soc. Washington, 32:110, May 20, type from Brian Head, Parowan Mts., Iron County, Utah. 1941. _O[chotona]. p[rinceps]. fuscipes_, Hall and Hayward, The Great Basin Naturalist, 2:108, July 20. _Marginal records._--Utah: type locality; 9000 ft., Duck Creek (Durrant, MS). OCHOTONA PRINCEPS GOLDMANI A. H. Howell. 1924. _Ochotona schisticeps goldmani_ A. H. Howell, N. Amer. Fauna, 47:40, September 23, type from Echo Crater, Snake River Desert, 20 mi. SW Arco, Idaho. 1938. _Ochotona princeps goldmani_, Hall and Bowlus, Univ. California Publ. Zool., 42:337, October 12. _Marginal records._--Idaho: _S base Grassy Cone_ (Davis, 1939:350); type locality; _Fissure Crater_ (A. H. Howell, 1924:41); _Great Owl Cavern_ (Davis, 1939:350). OCHOTONA PRINCEPS HOWELLI Borell.