_Distribution._--The humid coastal belt of western Washington, from the western base of the Cascade Mountains to the Pacific, exclusive of the Olympic Mountains. When A. H. Howell revised the chipmunks in 1929, he employed a concept of a subspecies different from the writer's own. The locality records listed by Howell (1929: 109-112) for _Tamias townsendii townsendii_ and _T. t. cooperi_ are not in agreement with Howell's own distribution map (_op. cit._: 107). When the localities listed by Howell are plotted on a map of Washington, the ranges of the two races overlap in some critical areas. Not all of the material examined by Howell was seen by the writer, and, consequently, the ranges shown in Fig. 83 are plotted, in part, on geographic grounds. Marginal localities on the east, so plotted, for _T. t. townsendii_, are: Hamilton (U. S. N. M.), 5 mi. E. Monroe (W. W. D.), Redmond (W. W. D.), Roy (U. S. N. M.), and Vancouver (U. S. N. M.). =Tamias townsendii cooperi= Baird _Tamias cooperi_ Baird, Proc. Acad. Nat. Sci. Philadelphia, 7:334, 1855. _Tamias townsendii_ var. _cooperi_ Baird, Mamm. N. Amer., p. 737, 1857. _Eutamias cooperi_ Lyon, Smithsonian Misc. Coll., 50:89, June 27, 1907. _Eutamias townsendii cooperi_ Howell, Jour. Mamm., 3:184, August 4, 1922. _Type._--Cotypes obtained at Klickitat Pass, 4,500 ft., Skamania County, Washington, by J. S. Cooper in July, 1853; in United States National Museum. _Racial Characters._--Similar to _T. t. townsendii_ but paler with pale stripes whitish rather than cinnamon. _Measurements._--Ten males and 10 females from the Cascades average, respectively: total length 246.4, 246.8; length of tail 111.7, 107.6; hind foot 35, 35.4; ear 20, 20; weight 77, 89.9 grams. _Distribution._--The higher and eastern Cascade Mountains and the Olympic Mountains. Marginal localities along the Cascades probably include: Swamp Creek (U. S. N. M.), Index (W. S. C.), North Bend (U. S. N. M.), Mt. St. Helens (U. S. N. M.), and Yacolt (M. V. Z.). =Marmota monax petrensis= Howell Woodchuck _Marmota monax petrensis_ Howell, N. Amer. Fauna, 37:33, April 7, 1915. _Type._--Obtained at Revelstoke, British Columbia, by W. Spreadborough on May 12, 1890; type in United States National Museum. _Measurements._--Howell (1915: 33) gives the measurements of an adult male (the type) as: total length 540; length of tail 127; hind foot 76. An adult female from Barkerville, British Columbia, measured: total length 505; length of tail 125; and hind foot 68. _Distribution._--The Pend Oreille Mountains, Pend Oreille County. The woodchuck was seen and positively identified in northeastern Washington but no specimens were collected.