Summer Pelage. Above dark olivaceous, sides of shoulders and 

 edge of thighs reddish fulvous; feet above ochraceous; lateral line 

 obscure; tail like winter but reddish, central area not well defined. 



Measurements. Total length, 300-350; tail vertebrae, 121-145; 

 hind foot, 49-55. 



g.—richardsoni. (Sciurus), Bachm., Proc. Zool. Soc, 1838, p. 100. 



Ty/>e locality. Columbia River, Oregon. 



Geogr. Distr. Western border of northern Montana, central 

 and northern Idaho, northeastern Washington and Oregon, north- 

 ward into British Columbia. 



Genl. Char. Upper surface of tail mostly black; size large. 



Color. Winter Pelage. Upper parts, limbs and feet, brownish 

 gray; dorsalb and chestnut rufous; tail on basal half dark rufous in 

 center grizzled with black, remainder all black fringed with yellowish 

 for two-thirds the length; black lateral line present; beneath, yellow- 

 ish gray in center, rest black; under parts white vermiculated with 

 black; ears tipped with black. 



Summer Pelage. Above rufous olivaceous; fore arm to shoulder, 

 hind limbs to thighs, and feet ochraceous orange; beneath white; 

 black lateral line conspicuous; tail above deep red for two-thirds the 

 length, rest black with rufous fringe on sides, beneath grizzled gray 

 washed with fulvous. 



Measurements. Average total length, 333; tail vertebra-, 125; 

 hind foot, 51.7. 



h.—streatori. {Sciurus), Allen, Bull. Am. Mus. Nat. Hist., N. Y., 

 1898, p. 267. 



Type locality. Ducks, British Columbia. 



Geogr. Distr. Northern Washington from Columbia River to 

 central British Columbia. 



Genl. Char. Apical third of tail black; size large. 



Color. Winter Pelage. Similar to S. h. richardsoni, but tail less 

 black. Dark chestnut dorsal band; beneath grayish white. Tail 

 above four-fifths its length rufous chestnut grizzled with black, 

 with the usual black border and pale yellow fringe; apical portion 

 black; below grizzled gray tinged with pale rufous. 



Summer Pelage. More olivaceous, less rufous; lateral line broad 

 and black; black on tail much reduced; yellow fringe broadened. 



Measurements. Total length, 280-355; *^'l vertebra;, 105-144; 

 hind foot, 47-54. 



i. — Vancouver ensis. (Sciurus), Allen, Bull. Am. Mus. Nat. Hist., 

 1890, p. 165. 

 Type locality. Duncan Station, Vancouver Island. 



