142 University of California Publications in Zoology. [Vol. 7 



in the collection of this Museum from the Kenai Peninsula, 

 Yakutat Bay, and other mainland points in Alaska, have the 

 frontal region high and rounded, a form of development that 

 apparently is at its maximum in Ursus altifrontalis Elliot, from 

 the Olympic Mountains, Washington. According to Allen (1. c, 

 p. 5) one of the usual results of age in the black bear is "the 

 marked building up of the frontal region." In these island 

 bear age produces exactly the opposite effect, for through the 

 development of the post-orbital processes and temporal ridges a 

 decidedly more flat-headed appearance is presented in the older 

 skulls. 



In color the island bear secured are all black, and according 

 to the Indians, the brown phase is unknown on the islands. It is 

 not so on the mainland, however, where the cinnamon phase is 

 fairly common, though this fact does not seem to be generally 

 known (cf. Osgood, 1909, p. 3) . At Marten Arm, Boca de Quadra, 

 I examined over twenty bear skins in an Indian camp, all 

 recently killed in the immediate vicinity, and over a third were 

 in the cinnamon phase. The Indians, though they prize them 

 higher than they do the black ones, as they fetch a better price, 

 do not regard them as different species. A young female killed 

 on the Taku River September 7 (no. 8328) is dark cinnamon 

 brown in color, the legs and feet somewhat darker, and the under 

 fur paler, with a white spot on the breast. 



Eleven specimens of the black bear were collected, nine from 

 island localities and two fr^m the mainland, besides a skull 

 picked up on Kupreanof Island. In detail they are as follows : 



No. 8329, $ adult, Kupreanof Island, April 24. Hair very 

 long and thick, as it is in winter pelage throughout. Black 

 everywhere except on the muzzle, which is dark brown. Under 

 fur dark gray, almost black. 



No. 8330, J* young, San Alberto Bay, Prince of Wales Island, 

 May 24. In very worn ragged pelage, the hair on the sides and 

 shoulders being rubbed off to a marked extent. Black, except 

 where the hair is much worn down, these areas having faded 

 to a rusty brown. 



No. 8331, 5 .voung, San Alberto Bay, May 25. Also in worn 

 pelage, though not so much so as the last. Hair largely rubbed 



