THE GROUND SQUIRRELS OF CALIFORNIA. 



661 



(a) Oregon Ground Squirrel in 

 meadow near Klamath Falls, Oregon. 

 Photographed by H. C. Bryant, May 30, 

 1914. Note uniform coloration with 

 no indication of a reddish brown patch 

 on back. 



(b) Female Belding Ground Squirrel 

 at entrance to burrow ; Tuolumne 

 Meadows, Yosemite National Park. 

 Photographed by T. I. Storer, July 27, 

 1915. Note patch on back rendered 

 photographically nearly black, but 

 which was reddish brown. Compare 

 with a. 



(c) Same squirrel as shown in b 

 standing upright in characteristic 

 "picket-pin" attitude. 



(d) Sierra Golden-mantled Ground 

 Squirrel or "bummer," feeding on 

 scraps from the camp table. Note the 

 distended cheek. Bullfrog Lake, 10,600 

 feet, Fresno County. Photographed by 

 J. Dixon, September 1, 1916. 



FIG. 20. 



