366 PROCEEDINGS OF THE ACADEMY OF [1896. 



Habitat. — Hiding by day in rock piles on the coasts of Cumber- 

 land Gulf. Starting up out of range and running up the mountain 

 sides to escape the hunter. — Kumlien. High rocky hills of New- 

 foundland, descending in severe winters to lower grassy levels, but 

 never in woodland. Hiding by day among rocks or under a bush. 

 — Doane. 



Color. — Adult summer pelage: entire back and upper sides, in- 

 cluding neck, shoulders and outer surfaces of thighs, uniform, dark, 

 grizzled gray, faintly suffused with tawny. A pinch of hairs from 

 near the middle of back shows the following color pattern : under 

 fur fine, tawny-white basally, becoming tawny at distal end ; over- 

 fur white or black at base in about equal proportions, the coarser 

 black-based hairs black throughout, the finer white-based hairs 

 with terminal half, black, interrupted by a subterminal band of 

 white or pale tawny. Lower head (including chin), lower neck, 

 nape, forebreast to forelegs, lower sides, edges of thighs and rump, 

 dark, pluhibeous gray, flecked with very long, slender, white hairs. 

 Lower breast, belly, vent and tail white, bordered by a nearly clear 

 plumbeous edging which separates the ventral from the abdominal 

 regions and joins the dark rump along the inside of thighs. Inner 

 anterior border of hams, sides of hind feet and toes, and lower sur- 

 faces of forelegs, white, thinly intermixed with leaden. Outer sur- 

 faces of fore and hind legs and superior surfaces of the feet, tawny 

 gray. Ears and space between them, black, becoming grayish at 

 base and with a narrow, whitish outer posterior margin from near 

 base to tip. Upper head, including cheeks and nose, grizzled huffy 

 gray, appreciably lighter than the gray shades of the back. Eye- 

 lids wliitish, edged with black. Whiskers weak and sparse, white 

 and black in equal proportions, the longer black hairs tipped with 



white. 



Winter pelage: entire fur, exclusive of ears, white. Extreme 

 tips of ears, black, the median anterior borders of ears, grayish ; in- 

 side of ears, blackish. 



Summer young, two-thirds grown, very similar to adults of same 

 season but more fulvous above, the ears grayer, the basal half of 

 back hairs leaden, their terminal half tawny brown with gray and 



black tips. 



Cranial characters.— '^ ot distinguishable from those already given 



for arcticns. 



Measyrementi^ (taken in flesh) : average of four adults; total 



26 



For measurements of type hangsi see table, pp. 374, 375. 



