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.
Description.—The woodchuck is the smallest member of the genus Marmota that occurs in Washington. Adults are about 22 inches in length, of which the tail comprises 5 inches. The body is stout and plump. The legs are short. The ears are low and rounded. The eyes are large but not prominent. The fur is rather stiff but dense. The upper parts are cinnamon, frosted with white-tipped guard hairs. The underparts are tawny. There is no white bar across the nose.
Woodchucks occur from Alaska to Idaho and eastward to the Atlantic, extending southward in the eastern United States. [Miller] (1924: 173-175) lists seven subspecies, one of which enters the extreme northeastern corner of Washington.