THOMOMYS. 277 



685. Thomomys douglasi (Richardson). 



Geomys douglasii Rich., Faun. Bor. Amer., i, 1829, p. 200. 

 , Thomomys douglasi ^Wxot, Syn. N. Am. Mamm., F. C. M. Pub., 

 II, 1901, p. 226. Zool. Ser. 

 Douglas' Pocket Gopher. 



Type locality. Near mouth of the Columbia River, Oregon. 

 Geogr. Distr. Lower Columbia River, northward into British 

 Columbia. 



a. Thomomys douglasi yelinensis Merriam. 



Thomomys douglasi yelm^nsis Merr., Proc. Biol. Soc. Wash., xiii, 

 1899, p. 21. Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 

 1901, p. 226. Zool. Ser. 

 Yelm Prairie Pocket Gopher. 



Type locality. Tenino, Yelm Prairie, Thurston County, Wash- 

 ington. 



Geogr. Distr. Washington. Range unknown. 



b. Thomomys douglasi ficscus (Merriam). 



Thomomys clusius fuscus Merr., N. Am. Faun., No. 5, 1891, p. 70. 



Thomomys douglasi fuscus Elliot, Syn. N. Am. Mamm., F. C. M. 

 Pub., II, 1901, p. 226. Zool. Ser. 

 Swarthy Pocket Gopher. 



Type locality. Mountains at head of Big Lost River, Custer 

 County, Idaho. 



Geogr. Distr. Mountains of central Idaho. 



c. Thomomys douglasi fisheri (Merriam). 



Thomomys fuscus fisheri Merr., Proc. Biol. Soc. Wash., xiv, 1901, 

 p. III. 

 Fisher's Pocket Gopher. 



Type locality. Beckwith, Sierra Valley, Plumas County, Cali- 

 fornia. 



Geogr. Distr. California. Range unknown. 



Genl. Char. Similar to T. d. fuscus, but paler; comparative differ- 

 ences in skull. 



Color. Upper parts and beneath grayish brown. 



Measurements. Total length, 191 ; tail vertebrae, 62 ; hind foot, 25. 



d. Thoiriomys douglasi oregonus Merriam. 



Thomomys douglasi oregonus Merr., Proc. Biol. Soc. Wash., xiv, 

 1901, p. 115. 

 Oregon Pocket Gopher. 



Type locality. Oregon City, Willamette Valley, Clackamas 

 County, Oregon. 



