146 CALIFORNIA MAMMALS. 



it the nose was kept raised over it, not buried in the earth. 

 The retreat was ahnost instantaneous after the earth was flirted 

 away. 



The following Pocket Gophers I have not seen. I give 

 a summary of the original descriptions. 



Thomomys laticeps Baird. 



BROAD-HEADED POCKET-GOPHER. 



Above yellowish brown, blackish dorsally ; below tinged with 

 reddish; tail about half as long as head and body; feet large; 

 skull very broad; rostrum short. 



Length 178 mm. (7.65 inches) ; tail vertebrae 64 (2.50) ; 

 hind foot 27 ( 1.06). 



Type locality, near Humboldt Bay, California. 



Thomomys leucodon navus Merriam. 



RED BLUFF POCKET-GOPHER. 



Above fulvous brown ; below buff ochraceous ; skull small but 

 very strong and ivory-like in texture; zygomata broadest pos- 

 teriorly; nasals cuneate, usually notched behind; incisors project- 

 ing forward, their faees yellow. 



Length 196 mm. (7.75 inches) ; tail vertebrae 65 (2.55); 

 hind foot 27 (1.06). 



Type locality, Red Bluff, California. 



Thomomys angularis Merriam. 



SAN JOAQUIN POCKET-GOPHER. 



Above fulvous grizzled with black ; below plumbeous strong- 

 ly washed with buffy ochraceous ; feet and tail whitish ; skull large 

 and massive ; braincase broad ; nasals emarginate posteriorly ; in- 

 terorbital region rounded. 



Length 255 mm. (10 inches) ; tail vertebrae 75 (3) ; hind 

 foot 32 (1.25). 



Type locality, Los Banos, Merced County, California. 



