MAMMALS 327 



Subspecies of T. talpoides 



T. t. talpoides (Rich.). Western Montana into Canada. 



T. t. rufescens Wied. Size large; length 240 mm.; color dark gray: 

 North and South Dakota and Manitoba. 



T. t. clusius Coues. Size small; color hazel gray: eastern Colorado 

 and Wyoming. 



T. t. hidlatus Bailey. Color pale and bright: eastern Montana and 

 Wyoming and western South Dakota. 



T. ocius Merr. Color very pale buffy gray, whitish underneath; 

 length 204 mm.; tail 60 mm.; hind foot 26 mm.; mammae 7 pairs: 

 Green River basin in Wyoming, Colorado and Utah. 



T. pygmcBiis Merr. Color hazel-brown; length 177 mm.; tail 46 

 mm.; hind foot 22 mm.; the smallest species; mammae 6 pairs: south- 

 western Wyoming and southeastern Idaho; Transition zone. 



T. fossor Allen. Color dark brown; length 221 mm.; tail 63 mm.; 

 hind foot 29 mm.; mammae 5 pairs: mountains of Colorado and Utah; 

 Boreal zone. 



T. quadratus Merr. Color light russet; length 210 mm.; tail 64 

 mm.; hind foot 27 mm.; mammae 5 pairs: northern California, eastern 

 Oregon and Nevada. 



Subspecies of T. quadratus 



T. q. quadratus Merr. Eastern Oregon and northern California. 



T. q. fisheri Merr. Color paler; size smaller: northern Nevada. 



T. douglasi (Richardson). Color uniform dull hazel; length 215 

 mm.; tail 64 mm.; hind foot 30 mm.; mammae 4 pairs: northwest 

 Washington. 



T. monticola Allen. Color dull hazel above, buff beneath; length 

 212 mm.; tail 70 mm.; hind foot 27 mm.; mammae 4: California and 

 Oregon. 



Subspecies of T. monticola 



T. m. monticola Allen. Sierra Nevada of California and Nevada; 

 southward to Mammouth Pass. 



T. m. mazama Merr. Color darker and richer: Cascade and Sis- 

 kiyou Mountains; southward to the Trinity Mountains; northward 

 to the Columbia. 



T. m. pinetorum Merr. Nose and cheeks conspicuously gray: 

 mountains on the west side of Sacramento Valley. 



