100 
Number in a litter not learned. No females taken carrying young, 
though a specimen taken July 14 had mammae plainly in use and abdominal 
tissue showed usual distention during nursing. Indicated a late arrival 
for young and same borne out by fact that not until July 25 juveniles 
recorded as numerous about burrows. 
Useless to lay a trap-line for mice above timber-line in vicinity of 
ground squirrel burrows. Ground squirrels invariably sprung them. 
On August 9, on a rock above timber-line, fresh fur of one of these 
animals found with a large, disgorged gob of fur beside it. Some raptor 
judged to be killer. 
Specimens: Four, from Chitina River glacier. 
May 21, No. 5618, 9 315-106-51. Still in winter coat. Back greyish with very little 
tinge of yellowish, some pale yellowish red on shoulders. Face and crown, dusky tawny 
reddish. Tail blackish above with conspicuous white edging; some dull, tawny below, 
particularly distally. Feet, pale buffy. Underparts greyish white, slightly mixed with 
yellowish along median line. 
June 3, No. 5632, d 5,000 feet altitude, 337-100-55. Winter coat. Back mostly 
greyish, with mottled appearance due to whitish sub-terminal portions of hairs, which are 
blackish-tipped. Very little yellowish on shoulders. Face and crown reddish. Under- 
parts whitish with traces of yellowish along median line. Tail blackish above, white- 
edged; median portion of tail reddish below. 
June 7, d No. 5635, 325-95-53. Colour similar to No. 5632, but with some irregular 
areas of reddish on underparts; going into summer coat. Tail blackish above; median 
portion of tail reddish below. 
June 14, No. 5641, 9 325-88-51. Weight slightly over one pound. Colour similar 
to No. 5635, but with whitish spots on back less distinct. Reddish areas below smaller and 
paler. 
These specimens in winter coat noticeably grey or hoary in colour, and have a silvery 
coat on neck and shoulders. Specimens of this subspecies from Teslin Lake region, Yukon, 
in late summer and autumn, noticeably much yellower above, and underparts almost 
entirely reddish or rusty. A similar condition found in Citellus parryi parryi and its 
synonyms ( phaeognathus , kennicottii, and barrowensis ) , which have been much confused 
in their extremely variable summer, winter, and mixed pelages. 
6. Scrums hudsonicus petulans Osgood White Pass Red Squirrel 
Very abundant in woods from river-level to timber-line and inhabiting 
even burns where new willow growth afforded cover in summer. Tre- 
mendous heaps of cone scales of white spruce ( Picea canadensis ) , sometimes 
20 feet in diameter and a foot or two in depth, told of activity of these 
animals in getting a liviug. Secured most of their food from this source 
and it is noteworthy that though they once raided camp and carried off 
much pilot biscuit, did not pick up oats left behind by pack train. Mice 
about camp also left grain where it fell. 
In May and early June families of young commonly met around 
larger cone-heaps, and as early as June 2, two-thirds grown, taken remote 
from nest. By about June 7 families oegan to break up. At this date, 
during an all-day absence from tent, several of these little pirates carried 
off contents of a large carton of biscuit. From this time a pest of mild 
nature about camp. Red squirrel here chief source of food supply for 
goshawks, Harlan’s hawks, and hawk owls, and perhaps coyote and lynx 
also levied toll. 
Specimens, five, all from Chitina River glacier, May 21, No. 5619, 9 344-138-49. 
No. 5620, 9 322-132-50. Still with traces of winter coat; obscure red stripe along middle 
of back and tail; no red on under side of tail. 
May 31, No. 5624, d 325-128-50. In summer coat; no red stripe on back, tail red 
above, bordered with black and with edges yellow- tipped; some red on tail below near tip. 
No. 5625, 9 338-130-49, and No. 5626, d 330-127-48, in similar summer coat. This sub- 
species fairly well defined, being larger and darker than S. h. hudsonicus , more reddish 
