Vol. 34, pp. 121-122 June 30, 1921 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



THOMOMYS DOUGLASII SHAWI, A NEW SUBSPECIES 



OF POCKET GOPHER FROM MOUNT 



RAINIER, WASHINGTON. 



BY WALTER P. TAYLOR. 



Investigations by the U. S. Biological Survey and the State 

 College of Washington in Mount Rainier National Park, Pierce 

 County, Washington (1919), and in the Cascade Mountains of 

 western Yakima County, Washington (1917), have disclosed 

 the existence in the high mountains of that region of an unde- 

 scribed subspecies of pocket gopher, belonging to the douglasii 

 group. I take pleasure in naming this form in honor of Professor 

 William T. Shaw, Zoologist of the State College of Washington, 

 Pullman, Washington, a leader in distributional and ecological 

 studies of the higher vertebrates of the State. 



Thomomys douglasii shawi, new subspecies. 



RAINIER POCKET GOPHER. 



Tijpe. — From Owyhigh Lakes, 5,100 feet, Mount Rainier, Washington; 

 No. 232,807, U. S. National Museum, Biological Survey collection; adult 

 male, skin and skull; collected by George G. Cantwell, August 9, 1919; 

 collector's number 1464. 



Diagnostic characters. — Similar to Thomomys douglasii limosus^ but 

 tending to be larger, paler, and less intense brown. Zygomata narrower 

 and mastoid width tending to be less. 



Geographic range. — 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. 



Color. — Above (in August specimens) cinnamon-buff or clay color, paling 

 to pinkish buff on sides; the postauricular spot blackish plumbeous, 

 inconspicuous; fore part of face varying between deep and light mouse 

 gray, tip of nose often with white spot ; underparts whitish, lightly washed 

 with buffy, and with whitish areas on chin and occasionally on the middle 

 of the breast or in the inguinal region ; top of both fore and hind feet white ; 



1 Specimens from localities intermediate between the type localities of Thomomys 

 douglasii douglasii and T. d. limosus indicate intergradation between them. 



24— Proc. Biol. Soc. Wash., Vol. 34, 1921. (121) 



