1903.] Allen, Mammals from Northern British Columbia. 535 



fore limbs, sides of the shoulders, sides of body and ventral 

 surface grayish white with a faint yellowish tinge, with a 

 tendency to yellowish rust-color on the chest and mid-line of 

 the ventral surface, in part due apparently to the coming in 

 of the new fall coat; tail above gray, broadly fringed with 

 yellowish white, and with a broad subapical bar of black; 

 below, the central area is dull chestnut brown, fringed and 

 tipped as above; upper surface of fore and hind feet pale 

 yellowish gray. 



Young specimens, one-fourth to one-half grown, taken at 

 the same place and date, are strikingly like the above-de- 

 scribed females, except that the pelage is finer and more 

 woolly ; the dorsal area is a little darker or more dusky, with 

 no rufous tinge; the sides of the neck, shoulders, and fore 

 limbs are washed with pale buff; the ventral surface is almost 

 wholly dusky gray, the hairs being for the most part dusky 

 plumbeous, lightly tipped with soiled whitish; tail and feet 

 as in the adults ; top of head and nose similar in respect to the 

 extent of the brown area, but the colors are paler. 



In the series taken at the same locality August 9 (ten days 

 later) the pelage is much fuller and the colors are much 

 brighter, and the average size of the young-of-the-year has 

 greatly increased. Some of the old males appear to have 

 nearly acquired the full post -breeding dress, at least as re- 

 gards coloration, though the pelage would still doubtless have 

 appreciably increased in length and fulness. The ground 

 color of the whole dorsal area is now dark iron-gray, or dusky 

 gray, prominently blotched with small squarish spots of white, 

 the hairs individually being dusky at base, centrally ringed 

 with ashy, subapically with black, and tipped with whitish, 

 with which are interspersed many longer wholly black hairs. 

 The top of the nose, as far back as the middle of the eyes, is a 

 bright rusty chestnut; the sides of the neck, shoulders, fore- 

 arms and thighs and the whole ventral surface extending well 

 up on the sides, are deep rusty ochraceous; the upper surface 

 of the fore and hind feet is deep ochraceous, and the central 

 area of the lower surface of the tail is a much deeper, richer 

 chestnut brown than in the breeding specimens. The larger 



