Bulletin American Museum of Natural History. [Vol. XX, 



rest of lower surface dark rufous, the fur blackish basally along the 

 median line. Ears larger, and tail shorter than in alascensis, but 

 much fuller. 



19. Ursus dalli gyas Merriam. ALASKA PENINSULA BEAR. 

 One specimen, a very old male, skin and skeleton, Muller 

 Bay, May 29. 



The ten fine specimens of large brown bears taken by 'Mr. 

 Stone at Muller Bay throw much light on the question of the 

 number of species of bears on the Alaska Peninsula. Of 

 these specimens 9 belong to the form I recently described 

 (this Bulletin, XVI, 1902, pp. 141-143, pll. xxx, xxxi) as 

 Ursus merriami and one to Ursus dalli gyas Merriam, based 

 on specimens from Pavlof Bay, on the opposite side of the 

 peninsula from Muller Bay. The two species prove to be 

 readily distinguishable by both cranial and external charac- 

 ters. With the material now in hand it is evident that the 

 type of U. merriami (skull) is a middle-aged male, and that 

 the ' topotype' (skin) is an old male U. gyas, this skin agree- 

 ing in coloration and character of pelage with the present old 

 male skin of gyas, and not with the series "of skins of merriami. 



The collector's measurements of the gyas specimen are as follows: 

 Total length, 2057; tail vertebrae, 127; hind foot, 349; height at 

 shoulder, 1068. Approximate weight, 1600 pounds. Skull, greatest 

 length (front of premaxillaries to end of occipital crest), 447; zygo- 

 matic breadth, 260; mastoid breadth, 250. (For further skull meas- 

 urements, see table, p. 290.) 



Pelage short, coarse and harsh; general coloration very dark brown; 

 claws heavy, but little curved, rather light brown, with a strongly 

 denned longitudinal whitish streak on the convex surface. 



20. Ursus merriami Allen. MERRIAM'S BEAR. Nine speci- 

 mens, skins and skulls, Muller Bay, May 24-June 12. Of 

 these, two are adult males and four are adult females, two of 

 which are very old; the other three are yearlings. 



The pelage is very long, soft, and woolly; color of dorsal area light 

 yellowish brown, sides and limbs dark brown. Claws short and much 

 curved, dark brown, the color varying somewhat in different specimens. 



The collector's measurements are as follows: 



