WESTERN POCKET GOPHER 



russet brown; warm buff on sides, slaty on nose, blackish 

 about ear, dirty whitish on feet, pale buffy on tail ; under- 

 parts washed with rich buffy over slate-colored underfur. 

 Summer pelage a brighter shade of russet. Total length, 

 males, 8.0 inches; tail vertebrae, 1.9 inches; hind foot, 1.06 

 inches. "Known only from Edmonton and Moose Mountain, 

 Alberta." (Bailey) 



Little-headed Pocket Gopher. — Thomomys fuscus myops 

 (Merriam). 

 Similar to typical fuscus in coloration and character of small 

 ears, but smaller in size. Upperparts (summer) light 

 brownish ; slaty on nose, blackish about ear, whitish on feet 

 and tip of tail; underparts buffy, chin white (usually). 

 Total length, males and females, 7.3 inches; tail vertebrae, 

 2.3 inches ; hind foot, i .0 inch. Found only near Conconully, 

 Okanogan County, Washington. 



West Coast Pocket Gopher. — Thomomys hesperus Merriam. 

 Small in size; ears small and pointed; color rich auburn. 

 Upperparts bright rich auburn; dusky on nose and cheeks, 

 black about ear, whitish on feet and tip of tail ; underparts 

 more nearly ochraceous. Total length, males, 8.4 inches; 

 tail vertebrae, 2.4 inches; hind foot, 1.08 inches. Found in 

 "Coast region of northwestern Oregon." (Bailey) 



Townsendii Group 



Characterized by large size (exceeded only by hulbivorus) ; 

 dichromatic coloration (gray and black phases) ; mammas in 

 four pairs (inguinal, 2-2; pectoral, 2-2). 



Townsend Pocket Gopher. — Thomomys townsendii townsendii 

 (Bachman). 

 Very large in size; ear small and pointed; claws medium; 

 occurring in two color phases, dark gray and black. Upper- 

 parts (gray phase) dark buffy gray to sooty gray; blackish 

 on nose, face, and about ear; lining of cheek-pouches black 

 and white; soiled gray on feet and tail; underparts with 

 washing of rich buff, chin white. Upperparts (black phase) 

 dull slaty black ; underparts like upperparts except for white 

 patch on chin, toes, and generally on lower feet. Summer 

 and winter pelages practically identical. Total length, 

 males, 12.2 inches, females, ii.o; tail vertebrae, males, 4.0 

 inches, females, 3.0; hind foot, males, 1.5 inches, females, 1.4, 

 Found in "Valley of Snake River in southern Idaho, from 

 American Falls to Weiser." (Bailey) 



Nevada Pocket Gopher. — Thomomys townsendii nevadensis 

 (Merriam). 

 Resembling typical townsendii in large size, dichromatic 

 coloration, but more buffy in gray phase and more slaty in 

 black phase. Upperparts (gray phase) light buffy gray; 

 slaty on nose and cheeks, pale buffy gray on feet and tail; 



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