FIELD BOOK OF MAMMALS 



along west side of Sacramento Valley, Cal., from Sisson 

 south to South Yolla Bolly Mountain." (Bailey) 



Deschutes Pocket Gopher. — Thomomys monticola nasicus 

 (Merriam). 

 Like typical monticola in size, with conspicuous large ears, 

 and brighter color. Upperparts (summer) bright yellowish 

 hazel; slaty on nose and about ears, whitish on feet, tail, and 

 chin. Winter pelage not quite as bright as summer. Total 

 length, males, 8.5 inches; tail vertebrae, 2.8 inches; hind foot, 

 I.I inches. Found in "West-central Oregon (east of the 

 Cascades), from Farewell Bend, Deschutes River, south to 

 the Yamsey Mountains." (Bailey) 



Heller Pocket Gopher. — Thomomys monticola helleri (Elliot). 

 Resembling mazama but darker in color. Upperparts 

 (winter) dull chestnut; ochraceous on sides, blackish on nose 

 and face, intense black about ears; whitish on feet (some- 

 times mottled with white) and tip of tail. Total length, 

 males, 8.1 inches, females, 7.8; tail vertebras, males, 2.2 

 inches, females, 2.3; hind foot, males, 1.16 inches, females, 

 1. 10. Found in "Coast region of southwestern Oregon." 

 (Bailey) 



Fuscus Group 



Characterized by ears relatively small and pointed ; mammae 

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



Brown Pocket Gopher. — Thomomys fuscus ftiscus (Merriam). 

 Small in size ; ears slender, pointed ; feet slender ; color light 

 brown. Upperparts (summer) light brownish; slaty on 

 nose, blackish about ear, dirty whitish on feet and tail; 

 underparts buffy. Winter pelage duller in tone than sum- 

 mer. Total length, males and females, 8. i inches ; tail verte- 

 brae, 2.2 inches; hind foot, 1.08 inches. Found in "South- 

 eastern British Columbia, greater part of northern and 

 central Idaho and western Montana, northwestern Wyom- 

 ing, and parts of eastern Washington and Oregon." (Bailey) 



Coeur D'Alene Pocket Gopher. — Thomomys fuscus saturatus 

 Bailey. 

 Larger "and darker than typical fuscus. Upperparts (sum- 

 mer) dark rich hazel; yellowish on sides, slaty on nose, black 

 about ear, buffy gray on feet and tail; underparts washed 

 with buffy, occasionally a small patch of white on chin or 

 throat. Winter pelage unknown. Total length, males, 9.0 

 inches, females, 8.6; tail vertebras, males, 3.1 inches, females, 

 2.9; hind foot, males, 1.20 inches, females, 1.16. Found in 

 "Higher parts of the Coeur d'Alene Mountains in Idaho and 

 Montana." (Bailey) 



Alberta Pocket Gopher. — Thomomys fuscus loringi Bailey. 

 Resembling typical fuscus, slightly larger in size and duller 

 in color, ear small and pointed. Upperparts (winter) dull 



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