SCIURIDA—SCIURUS HUDSONIUS VAR. DOUGLASSI. 679 
of var. hudsonius,—for instance, like No. 2043, from Mount Joy, Pa., 
and quite a number of others from New York, Massachusetts, and Maine. 
The lower surface, however, is rich buff. Other specimens are somewhat 
similar, differing in being darker above and paler below. Specimens from 
Puget’s Sound are profusely annulated below with black, while this feature is 
absent in California specimens. ‘The tail differs as widely in different speci- 
mens as it does in typical examples respectively of varieties hudsonius and 
fremonti, in some examples being gray and black, edged with white, in others 
deep rufous and black, edged with pale yellow. As will be further noticed 
under var. fremonti, some of the Fort Crook specimens are almost exactly 
like Colorado examples of fremonti, while others are intermediate between 
these and the usual southern phase of var. dowglassi. 
In respect to the dorsal surface, varieties douglassi and richardsoni are 
often indistinguishable, the fulvous color of the lower surface in douglassi 
being the only feature that serves to separate them. No. 8777, from the 
Lower Kwichpak, is exactly intermediate between them, while other speci- 
mens still further show a gradual intergradation. Var. doug/assi is merely 
var. richardson with the under parts tawny instead of white. This varies, 
as already noted, in specimens taken at the same locality and season, from 
pale buffy-gray to bright reddish-tawny or orange. In other specimens, the 
tawny is reduced to the faintest shade of fulvous, or is wholly replaced by 
pure white. The median dorsal band is sometimes wholly absent, though 
generally faintly traceable, and at other times is strongly developed. The 
color of the tail varies with the intensity of the tawny of the lower surface 
of the body. In those with a pale shade of tawny below, the hairs of the 
tail are yellowish-gray at the base and tipped with white. In those otter- 
yellow below, the tail-hairs are strongly yellowish at base and tipped with 
yellowish-white. The light ring surrounding the eye similarly varies from 
yellowish-white to tawny. 
In winter, the pelage is much softer and fuller than in summer; the ears 
are then tufted, and the soles densely furred. In summer, the ears are gen- 
erally tuftless, and the soles are more or less naked. 
Var. FREMONTI. 
Frémont’s Chickaree. 
Varierat Cuars.—Length of head and body 7.75; tail to end of vertebree 
4.75; tail to end of hairs6.50. Above dusky yellowish-gray; beneath pure white 
