Mammals of Washington, Volume 2 / University of Kansas Publications Museum of Natural History

by Walter Woelber Dalquest

Distribution.—Lowlands near the mouth of the Columbia River. Specimens from Puget Island (U. S. N. M.) have been examined.

Onychomys leucogaster fuscogriseus Anthony
Northern grasshopper mouse

Onychomys leucogaster fuscogriseus Anthony, Bull. Amer. Mus. Nat. Hist., 32: 11, March 7, 1913.

Type.—Obtained at Ironside, Malheur County, Oregon, by H. E. Anthony, in 1912; type in American Museum of Natural History.

Measurements.—Nine males and 5 females from Franklin, Benton, and Walla Walla counties, Washington, average, respectively: total length 132.3, 133.0; length of tail 35.8, 35.6; hind foot 19.2, 19.6; ear 17.6, 17.6; weight 23.3, 24.1 grams.

Distribution.—The Columbian Plateau, southeastern Washington, and the Yakima Valley, ranging north to Douglas ([Taylor] and [Shaw], 1929: 21), west to Yakima (M. V. Z.), east to Asotin ([Taylor] and [Shaw], 1929: 21) and south to Wallula ([Taylor] and [Shaw], 1929: 21).

Fig. 104. Distribution of the northern grasshopper mouse, Onychomys leucogaster fuscogriseus, in Washington.