ii6 



THE MUSEUM. 



Summer Pelage. More olivaceous 

 above and less deeply orange below 

 than either 5. doitglasii or S. d. iiiol- 

 lipilosns, varying from yellowish buff 

 to buffy ochraceous, thus strongly ap- 

 proaching .S'. d. californicns, with 

 which it intergrades to the east and 

 south. 



Geographical range. The Cascade 

 region of Oregon and Washington, 

 north into British Columbia, including 

 also the coast region at the mouth of 

 the Eraser river, and north at least to 

 Rivers Inlet, some 50 miles north of 

 Vancouver Island. In Oregon this 

 form prevails south in the Cascades to 

 the vicinity of Fort Klamath; and, 

 west of the Cascades, to Glendale, 

 Cleveland, Eugene and Sweet Home, 

 and in Washington, to Tenino, Roy 

 and Snoqualmie Falls. 



Sciiirus douglasii californicns, Al- 

 len. California Chickaree. Winter 

 Pelage. Above similar to S. d. cas- 

 cadcnsis, but the median band of a 

 much paler shade of chestnut, and the 

 general color much lighter and grayer 

 in general effect. Tail broad and full, 

 with generally less chestnut at the base 

 of the hairs and the outer white fringe 

 much broader and intense, clear white. 

 Ventral surface grayish white, without 

 fulvous tinge and with little or no ver- 

 miculation, and this mainly at the 

 sides of the ventral area. 



Summer Pelage. Above similar to 

 5. d. cascadciisis, almost indistinguish- 

 able, in fact, but rather lighter and 

 grayer in general effect. Ventral sur- 

 face pale fulvous, varying from cream 

 white to pale fulvous; feet ochraceous, 

 with a conspicuous deep ochraceous 

 band along the front edge of the thigh; 

 fore arm, ochraceous, the inner surface 

 only a little paler than the outer. Tail 

 narrow and slender, usually very little 

 chestnut at base of hairs, and the 

 fringe pure white, as in winter, but 

 narrower. 



The contrast between the coloration 

 of the ventral surface in true S. doug- 

 lasii and typical 5. d. californicns, in 

 both the summer and winter pelages. 



is thus very striking, but in the Cas- 

 cades region of Oregon and Washing- 

 ton, the two completely intergrade 

 through -S. d. cascadciisis. 



Geographical range. The Sierra 

 Nevada region of central and northern 

 California, north in Oregon, east of 

 the Cascades, to the Maury Mountains 

 and Strawberry Butte, over which 

 region it prevails with little change 

 and may be considered typical, and 

 nearly typical californicus prevails 

 westward in Oregon to the eastern 

 base of the Cascades, where it passes 

 into cascadciisis. 



Review of the Sciiirus douglasii 

 Group. 



The present material is greatly inad- 

 equate for a satisfactory study of the 

 5. douglasii group, as developed in 

 California, Oregon, W^ashington and 

 British Columbia. There are appar- 

 ently three forms along the coast one 

 of which the northern, also occurs in 

 the interior, while a fourth is wholly 

 confined to the interior. These are 

 beginning at the south-west: i. 5. 

 douglasii viollipilosus, of the redwood 

 belt, west of the coast range, which 

 extends from Sonoma county, Califor- 

 nia, into Curry county, Oregon, inter- 

 grading with i". d. californicus in the 

 Siskiyou region and with douglasii 

 proper at the northward; 2. 5. doug- 

 ■lasii, of the immediate coast region of 

 Oregon and Washington, being con- 

 fined mainly to within 50 to 100 miles 

 of the coast, but extending also up the 

 Skagit valley and intergrading on the 

 e2.s\.W\ih S.d cascadensis] 3. S.d. cas- 

 cadciisis, of the coast region of south- 

 ern British Columbia, and thence 

 southward through the Cascades, but 

 only in the mountains proper, but to 

 varying distances t© the base, both to 

 the east and west, intergrading to the 

 westward with 5. douglasii, and to 

 the south-eastward with 5. d. califor- 

 nicus ; 4. S. d. californicus, of the 

 Sierra Nevada region of California and 

 southern Oregon, ranging in the inter 

 ior at least to the Maury Mountains 



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