_Distribution._--From the British Columbia boundary south to the Columbia River and from the western Cascades east to the area of intergradation with _fenisex_. Marginal occurrences are: Whatcom Pass (U.S.N.M.), Stevens Pass (W.W.D.), Keechelus (U.S.N.M.), Cowlitz Pass (U.S.N.M.), Tumtum Mountain (M.V.Z.). =Lepus townsendii townsendii= Bachman White-tailed jack rabbit _Lepus townsendii_ Bachman, Jour. Acad. Nat. Sci. Philadelphia, 8 (pt. 1):90, pl. 2, 1839. _Lepus campestris townsendi_ Merriam, Proc. Biol. Soc. Washington, 17:132, July 14, 1904. _Lepus townsendii townsendii_ Hollister, Proc. Biol. Soc. Washington, 28:70, March 12, 1915. _Type._--Obtained by J. K. Townsend at old Fort Walla Walla (present town of Wallula), Walla Walla County, Washington; type in Philadelphia Academy of Natural Sciences. _Measurements._--A male from Miller's Island, Klickitat County, in the Columbia River, measured: total length 564; length of tail 117; hind foot 156; ear 110; weight 337.5 grams. _Distribution._--Previously found over the grasslands of eastern Washington. Now restricted and scarce except in the Okanogan Valley. _Remarks._--The white-tailed jack rabbit is the largest rabbit in the state, adults measuring 24 or more inches in length. The long legs and long ears accentuate the impression of large size. Its body is more bulky than that of its relative, the black-tailed jack rabbit. In summer the pelage of the upper parts is dark gray and in winter it is white over nearly the entire body. The white-tailed jack rabbit occurs from southern Saskatchewan south to extreme northern New Mexico, and from eastern Washington east to Wisconsin. A single race occurs in Washington. In eastern Washington "whitetails" favor the hilly, bunchgrass territory of the arid subdivision of the Transition and Upper Sonoran life-zones. In winter they descend to the lower sagebrush valleys. The principal enemies of the white-tailed jack rabbit are the eagle, coyote, and bobcat. Of 1,186 stomachs of coyotes from Washington, Sperry (1941: 11) found that 27 percent contained rabbits, including jack rabbits, snowshoe hares, and cottontails. In the daytime, white-tailed jack rabbits hide in forms which consist of shallow holes dug at the bases of bushes or beside rocks. They feed in the morning, evening, and in the night along wide, well-defined trails through the bunchgrass. If startled from their forms they dash off in bounding, erratic leaps, skimming away until lost to sight. A whitetail has been timed at a speed of 34 miles per hour (Cottam and Williams, 1943: 262).