THOMOMYS. 278 



Uinta Mountains Pocket Gopher. 



Type locality. Uinta Mountains, Summit County, Utah. Alti- 

 tude, 10,000 feet. 



Geogr. Distr. Uinta Mountains.  Range unknown. 



Gent. Char. Nasals short, faintly notched behind, not so long as 

 premaxillae; interparietal large, pentagonal; no temporal ridges; audi- 

 tory tubes conspicuous; bullae large. 



Color. Above grayish brown suffused with fulvous and mixed 

 with black tipped hairs; cheeks and sides of neck grizzled bister; 

 sides grayish brown; nose, ear patch, and throat dusky; fore legs and 

 feet grayish dusky; hind feet whitish; tail above dark. 



Measurements. Total length, 220; tail vertebrae, 68; hind foot, 30. 



673. Thomomys leucodon Merriam. 



Thomomys leucodon Merr., Proc. Biol. Soc. Wash., xi, 1897, p. 215. 

 Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 1901, p. 223. 

 Zool. Ser. 

 White-toothed Pocket Gopher. 



Type locality. Grant Pass, Rogue River Valley, Josephine 

 County, Oregon. 



Geogr. Distr. Oregon. Range unknown. 



a. ThoinoDiys leucodon naiuos Merriam. 



Thomomys leucodon navus Merr., Proc. Biol. Soc. Wash., xiv, 

 1901, p. 112. 

 Active Pocket Gopher. 



Type locality. Red Bluff, Tehama County, California. 



Geogr. Distr. Range unknown. 



Genl. Char. Similar to T. leucodon; size smaller; incisors yellow; 

 nasals cuneate, notched behind. 



Color. Above pale fulvous ; under parts buffy ochraceous. 



Measurements. Total length, 200; tail vertebrae, 67 ; hind foot, 27. 



674. Thomomys operarius Merriam. 



Thomomys operarius Merr., Proc. Biol. Soc. Wash., xi, 1897, P- 215. 

 Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 1901, p. 223. 

 Zool. Ser. 

 Working Pocket Gopher. 



Type locality. Keeler, east side of Owens Lake, Inyo County, 

 California. 



Geogr. Distr. Eastern California, apparently restricted to the 

 vicinitv of Owens Lake. 



