1911] Swarth: Alaska Expedition of 1909. 119 



spent on them, but I should think it very possible that they 

 occurred on the two latter. On the mainland, red squirrels or 

 signs of their presence, were seen at practically every point w^e 

 visited. (See text figure 1, page 153.) 



Specimens were collected as follows : Kupreanof Island, 

 eight (nos. 8761-8768), Kuiu Island, five (nos. 8769-8773) 

 Revillagigedo Island, one (no. 8780), Etolin Island, two (nos 

 8781, 8782), Mitkof Island, two (nos. 8784, 8785); and from 

 mainland points: Chickamin River, six (nos. 8774-8779), Brad- 

 field Canal, one (no. 8783), Thomas Bay, one (no. 8786), and the 

 Taku River, two (nos. 8787, 8788), a total of twenty-eight. 



Those from Kupreanof and Kuiu, taken in April, are in 

 winter pelage throughout. After leaving these islands no 

 squirrels were secured until we arrived at the Chickamin River, 

 the middle of June. Of the four adults secured here, three were 

 molting from winter to summer pelage; the fourth (no. 8778) 

 has completed the change, but is abnormal in coloration, having 

 a tendency to albinism, evinced by small, scattered spots of pure 

 white on the back, head and under tail surface. Two juvenals 

 were taken here (nos. 8775, 8776), about two-thirds grown. The 

 single specimen from Revillagigedo Island, shot July 4, is still 

 in the winter coat, the new summer hair just beginning to appear 

 upon the toes and feet. Of the two from Etolin Island, a female 

 taken on July 6 (no. 8781) is largely in the winter pelage, while 

 a male secured July 11 (no. 8782), is in summer pelage through- 

 out. All collected later are in summer pelage. 



On the islands inhabited by them these squirrels are quite 

 numerous, apparently much more so than on the adjacent main- 

 land, where the individuals are probably more widely distributed. 

 On Kupreanof and Kuiu islands their shrill bark was frequently 

 heard in the woods, but they were quite shy, and kept well out 

 of sight. At this time they were feeding largely on various fungi 

 and on buds and green stuff. Later in the summer, at the 

 Chickamin River, Bradfield Canal, etc., they appeared to be 

 living mainly on the spruce cones, the stripped scales of which 

 formed large mounds under some of the trees. One shot on 

 ]\Iitkof Island was busily engaged in tearing strips of bark from 

 some dead brush, possibly as material for a nest, as his 



