Microtus longicaudus littoralis Goldman, Jour. Mamm., 19:491, November 14, 1938.
Specimens examined.—Total 29, as follows: Alaska: E side Chilkat River, 100 ft., 9 mi. W and 4 mi. N Haines, 9; 1 mi. S Haines, 5 ft., 20.
Remarks.—In comparison with the series of M. l. vellerosus from the Liard River area, the long-tailed meadow mice from near Haines are more reddish brown, have a longer tail, and have a smaller skull with smaller auditory bullae. This subspecies is restricted to the coastal area, and as noted under the account of M. l. vellerosus, intergradation between these two forms occurs a relatively short distance inland.
Microtus oeconomus macfarlani Merriam
Tundra Mouse
Microtus macfarlani Merriam, Proc. Washington Acad. Sci., 2:24, March 14, 1900. (Type from Fort Anderson, Anderson River, Mackenzie district, Northwest Territories, Canada.)
Microtus oec[onomus] macfarlani Zimmerman, Archiv f. Naturgesch., 11:187, September 12, 1942.
Specimens examined.—Total 70, as follows: Alaska: Circle, 664 ft., 1; Chatanika River, 700 ft., 14 mi. E and 25 mi. N Fairbanks, 13; Twelve Mile Summit, 3225 ft., Steese Highway, 6; 1 mi. SW Fairbanks, 440 ft., 3; N side Salcha River, 600 ft., 25 mi. S and 20 mi. E Fairbanks, 28; Yerrick Creek, 21 mi. W and 4 mi. N Tok Junction, 9; Fish Creek, 3400 ft., 5 mi. N and 1 mi. E Paxson, 3; Glenn Highway, 6 mi. WSW Snowshoe Lake, 1. Yukon Territory: Jct. Grafe and Edith Creeks, 1; 6 mi. SW Kluane, 2550 ft., 2; SW end Dezadeash Lake, 1. British Columbia: Stonehouse Creek, 5½ mi. W jct. Stonehouse Creek and Kelsall River, 2.
Remarks.—Alcorn found the tundra mouse in many of the localities at which he trapped in east-central Alaska. Specimens were taken above timberline, along roads, in grassy areas which had been cleared of timber, and in low vegetation bordering streams. On August 17 at Fish Creek, 5 miles north and 1 mile east of Paxson, Alaska, Alcorn obtained one of these mice in a tree in the daytime. Immature specimens taken at Stonehouse Creek are, to my knowledge, the first records for this species in British Columbia.
Mus musculus Linnaeus