3o8 VERTEBRATE ANIiLA.LS OF THE UNITED STATES 



M. minor (Merr.). Size very small; length 120 mm.; tail 30 mm.; 

 hind foot 16 mm.; color peppery gray above, buff below: northern 

 border of the Great Plains from Minneapolis to eastern North Dakota 

 and Alberta. 



M. californicus (Peale). Color dull buff or brownish; belly whitish; 

 tail bicolor, dark brown and gray; length 171 mm.; tail 49 mm.; hind 

 foot 21 mm.; mammae 8; fur coarse: Pacific slope; in dry meadows. 



Subspecies of M. californicus 



M. c. californicus (Peale). Coastal region of central California. 



M. c. constrictus Bailey. Smaller and grayer: northwest coast of 

 California, near Cape Mendocino. 



M. c. eximius Kellogg. Tail black: coastal region of northern 

 California and southern Oregon. 



M. c. (Bstuarinus Kellogg. Size large; color dark: San Joaquin and 

 Sacramento valleys. 



M. c. vallicola Bailey, Larger and darker: Owens Valley region, 

 California. 



M. c. sanctidiegi Kellogg. Color brown or buff; size large: San 

 Diego region; north to the San Bernardino Mountains. 



M. c. kernensis Kellogg. Color lighter; size large: Kern River 

 basin; west to Bakersfield, California. 



M. townsendii (Bachman). Color dark brown; belly grayish; tail 

 black; length 226 mm.; tail 66 mm.; hind foot 26 mm.; ears conspicuous: 

 region west of the Cascades from British Columbia to Yaquina Bay, 

 Oregon; Transition zone. 



M. mordax (Merr.). Color dark gray; belly w^hitish; tail long; 

 feet small; length 185 mm.; tail 70 mm.; hind foot 22 mm.: Rocky 

 Mountains from latitude 60 to New Mexico and the eastern slopes of 

 the Cascades and Sierras; common on the banks of mountain streams; 

 Hudsonian and Canadian zones. 



Subspecies of M. mordax 



M. m. mordax (Merr.). Eastern Oregon and northern and central 

 Nevada. 



M. m. sierrcB Kellogg. Color darker : northern and eastern California 

 and Oregon. 



M. m. bernardinus Merr. San Bernardino Mountains. 



M. m. abditus Howell. Size very large; color darker: coastal region 

 of Oregon. 



