SCIURID^ 87 



leg-s and feet to the toes, becoming paler gray on the feet. Ex- 

 amples from northern California and the Sierra Nevada ai^ 

 lighter colored than those from Oregon through greater extern 

 of the white grizzle on the upper surface. 



Length about 560 mm. (22 inches); tail vertebrje 26u 

 (11) ; hind foot 79 (3.10) ; ear from crown 30 (1.18). 



Type locality, near the Columbia River in Oregon or Wasn- 

 ington. (From Lewis and Clark's description.) 



Columbia Gray-Squirrels occur in western Wasnmgron, 

 western Oregon, northern California and through the Sierra 

 Nevada. This seems to be the form along the coast north ot 

 San Francisco. I have taken examples in Mendocino and Plumas 

 Counties and in the southern end of the Sierras that vary no more 

 than individuals do in any of these places. They are all grayer 

 than those from Ol^egon, but not greatly so. 



Sciurus griseus nigripes Bryant. (Black — foot.) 



BLACK-FOOTED GRAY-SQUIRREL. 



Considerably darker than griseus, the white surface grizzl- 

 ing being reduced in amount and the sub-color darker; tail 

 darker; upper surface of feet much darker, slaty or black, the 

 hind feet often black to the toes ; back more or less suffused with 

 umber brown. 



Black-footed Gray-Squirrels occur from San Francisco 

 southward in the Santa Cruz Mountains. I have seen no ex- 

 amples from the Mountains of Monterey County, but probably 

 they would be nearest this subspecies. 



Sciurus griseus anthonyi Mearns. (For A. W. An- 

 thony. ) 



ANTHONY GRAY-SQUIRREL. 



Very similar to griseus; feet darker, intermediate in color 

 between griseus and nigripes. In winter the whitish grizzling 

 becomes more ochraceous on the back, resulting in an indefinite 

 brown band. 



