FIELD BOOK OF MAMMALS 



Yelm Pocket Gopher. — Thomomys douglasii yelmensis Mer- 

 riam. 

 Resembling typical douglasii, but color duller and darker, 

 ears more pointed and with conspicuous black patches. 

 Upperparts (faded summer pelage) dull hazel ; dusky on nose 

 and sides of face, blackish on ears and about ears, white on 

 feet, tail, and sometimes white spot on breast or on side; 

 underparts buffy, irregularly spotted with white. Total 

 length, males, 8.9 inches; tail vertebrse, 2.7 inches; hind foot, 

 1 .28 inches. Found on "Prairies around south end of Puget 

 Sound, Wash." (Bailey) 



Tacoma Pocket Gopher.' — Thomomys douglasii tacomensis 

 Taylor. 

 "Darker than any others of the "pocket gophers" occupying 

 the lowlands of western Washington. Similar to Thomomys 

 douglasii yelmensis to which it appears to be most closely 

 related, but upperparts and face darker; postauricular black 

 area more extensive ; ..." (Taylor) Upperparts (winter) 

 cinnamon-buff grizzled with blackish; blackish on face and 

 back of ear; underparts pale gray. Total length, males, 

 8.8 inches, females, 8.5 inches; tail vertebrae, males, 2.5 

 inches, females, 2.6 inches; hind foot, males, 1.2 inches, 

 females, i . 1 6 inches. Found in Pierce County, Washington ; 

 limits of range unknown. 



Black-headed Pocket Gopher. — Thomomys douglasii melanops 

 (Merriam). 

 Similar to yelmensis but blacker on nose and head. Upper- 

 parts (summer) dark russet; dusky on nose and face, exten- 

 sively black about ears; white on feet, tip of tail, chin 

 (usually), and wrists; underparts ochraceous. Total length, 

 females, 8.2 inches; tail vertebras. 2.5 inches; hind foot, i.i 

 inches. Measurements of males unknown. Found in 

 "Olympic Mountains, Wash." (Bailey) 



Rainier Pocket Gopher. — Thomomys douglasii shawi Taylor. 

 Resembling limosus but larger, paler, and less intense brown. 

 Upperparts (August) cinnamon-buff, sides pinkish buff ; spot 

 back of ear slaty blackish, inconspicuous; tip of nose 

 usually with white spot; underparts w^hitish with wash of 

 buffy; tops of feet white. Total length, males, 9.1 inches, 

 females, 8.3 inches; tail vertebras, males, 2.9 inches, females, 

 2.4 inches; hind foot, males, 1.3 inches, females, 1.2 inches. 

 Found on the "East side of Mount Rainier National Park; 

 also the Cascade Mountains in the vicinity of Mount Aix, 

 Cowlitz Pass, and Goat Rocks. Life Zone, Hudsonian." 

 (Taylor) 



White Salmon Pocket Gopher. — Thomomys douglasii limosus 

 (Merriam). 

 Resembling typical douglasii, but darker in color and with 

 blackish ear patch. Upperparts (summer) dull chestnut; 

 slaty on nose, blackish about ear; feet and tail dirty white; 

 underparts paler than upperparts, more nearly ochraceous. 



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