Ochotona minimus Bangs, Proc. New England Zoöl. Club, 1:39, June 5, 1899.
Ochotona fenisex [Osgood], Proc. Biol. Soc. Washington, 26:80, March 22, 1913 (substitute for minimus Lord).
Ochotona princeps fenisex A. H. [Howell], N. Amer. Fauna, 47:28, August 21, 1924.
Type.—Obtained by J. K. Lord at "Ptarmigan Hill," near head of Ashnola River, Cascade Range, British Columbia, in early fall of 1860 (?); type in British Museum.
Racial characters.—Size and color intermediate between brunnescens and cuppes; length about 8 inches; color of upper parts near Pinkish Cinnamon, becoming gray on posterior third of back; underparts washed with buff; skull of medium size and proportions.
Measurements.—Nine males and 5 females from Okanogan and Chelan counties average, respectively: total length 190.0, 197.4; hind foot 31.1, 32.8; ear 21.6, 22.0.
Distribution.—Specimens referable to this race occur from the British Columbian boundary south, through the eastern Cascade Mountains. Along the western border of its range, fenisex becomes larger and darker, merging into the race brunnescens. Marginal records are: Hidden Lakes (U.S.N.M.), Lyman Lake (U.S.N.M.), Mt. Stuart (W.W.D.), Easton (U.S.N.M.), Mt. Aix (U.S.N.M.), Steamboat Mt. (M.V.Z.).
Ochotona princeps brunnescens [Howell]
Ochotona fenisex brunnescens A. H. [Howell], Proc. Biol. Soc. Washington, 32:108, May 20, 1919.