3l8 VERTEBRATE ANIMALS OF THE UNITED STATES 



T. talpoides (Richardson) (Fig. 174). Color dark gray or grayish 

 brown; under parts whitish or pure white; tail white tipped or all white; 

 length 214 mm.; tail 60 mm.; hind foot 28 mm.; mamma? 6 pairs: 

 South Dakota, Colorado and Wyoming northward into Canada; 

 8 subspecies. 



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. hullatus 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. pygmaus Merr. Color hazel-brown; length 177 mm.; tail 46 

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

 western W^yoming 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. douglasii (Richardson). Color uniform dull hazel; length 215 

 mm.; tail 64 mm.; hind foot 30 mm.; mammae 4 pairs: western Wash- 

 ington; 7 subspecies. 



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

 212 mm. ; tail 70 mm. ; hind foot 2 7 mm. ; mammae 4 pairs : California and 

 Oregon; 5 subspecies. 



Subspecies of T. monticola 



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

 southward to Mammouth Pass. 



