OREGON: _Baker Co._: East Pine Creek, 2-1/2 mi. NE Cornucopia, 6 (USBS); McEwen, 2 (USBS); _Bourne_, 7 (USBS). _Clackamas County_: _Marks Creek, 12 mi. N of Howard_, 2 (USBS); Howard, 2 (USBS). _Crook County_: _Ochoco R. S., 4000 ft._, 4 (MVZ). _Grant Co._: _Austin_, 2 (USBS); _Cold Spring, 4900 ft., 8 mi. E Austin_, 4 (MVZ); Beech Creek, 1 (USBS); _Strawberry Mts._, 6 (USBS); _north fork Malheur River, 21 mi. SE Prairie City, 5000 ft._, 21 (MVZ). _Harney Co._: 10 mi. N. Harney, 1 (USBS); _Steen Mts., Keiger Gorge, 6900 ft._, 6 (USBS); Diamond, 4300 ft., 2 (USBS). _Jefferson Co._: Foley Creek, 12 mi. E Hay Creek, 1 (USBS). _Klamath Co._: Fort Klamath, 1 (USBS). _Lake Co._: Silver Creek, 7000 ft., Yamsey Mts., 1 (USBS); _2 mi. E Lakeview, 5200 ft._, 3 (MVZ). _Malheur Co._: Jordan Valley, 4200 ft., 1 (USBS). _Umatilla Co._: Meacham, 1 (USBS). _Union County_: Elgin, 2 (USBS). _Wallowa Co._: Paradise, 10 mi. N Horse Creek, 7000 ft., 1 (USBS); _Minam Lake_, 1 (USBS); _16 mi. S and 3 mi. E Lostine, 5500 ft._, 9 (MVZ); _west fork Wallowa River, 5000 ft., 2-1/2 mi. above Wallowa Lake_, 1 (FM); _near Wallowa Lake, 4500 ft._, 3 (FM). _Wheeler County_: 11 mi. W and 7 mi. S Mitchell, 4850 ft., 20 (MVZ). WASHINGTON: _Asotin Co._: Anatone, 3300 ft., 1 (USBS). _Columbia County_: Twin Buttes, 25 mi. SE Dayton, Blue Mts., 2 (MVZ); _Stayawhile Spring, 5150 ft._, 4 (MVZ). _Marginal records._--Washington: Anatone, 3300 ft. Oregon: East Pine Creek, 2-1/2 mi. NE Cornucopia. Idaho: 1 mi. NE Heath, SW slope Cuddy Mtn., 4000 ft.; Bald Mtn., R. S., Boise Nat'l Forest, 10 mi. S. Idaho City, 7400 ft.; Trail Creek, Boise Nat'l Forest. Nevada: Harrison Pass R. S., Ruby Mts.; Steel Creek, 7000 ft.; Wisconsin Creek, 7000 ft.; 13 mi. N Paradise Valley, 6700 ft. California: Lassen Creek; Buck Creek R. S. Oregon: Fort Klamath; Howard; Meacham. Washington: Twin Buttes, 25 mi. SE Dayton, Blue Mts. =Zapus princeps pacificus= Merriam _Zapus pacificus_ Merriam, Proc. Biol. Soc. Washington, 11:104, April 26, 1897; Preble, N. Amer. Fauna, 15:30, August 8, 1899. _Jaculus hudsonius_, Baird, Repts. Expl. and Surv. 111 8 (pt. 1):433, July 14, 1858 (part--the part from Canoe Creek, California). _Zapus alleni_ Elliot, Field Columbian Mus., publ. 27, zool. ser., 1:212, April 19, 1898, type from Pyramid Peak, Lake Tahoe, El Dorado County, California. _Zapus trinotatus alleni_, Elliot, Field Columbian Mus. Publ. 91, zool. ser., 3:315, July 5, 1904; Preble, N. Amer. Fauna, 15:27, August 8, 1899. _Zapus pacificus alleni_, Howell, Univ. California Publ. Zool., 21:232, May 20, 1920. _Zapus trinotatus pacificus_, Bailey, N. Amer. Fauna, 55:233, August 29, 1936. _Zapus princeps alleni_, Hall, Mammals of Nevada; Univ. California Press, Berkeley, California, 579, July 1, 1946.