286 



VERTEBRATE ANIMALS OF THE UNITED STATES 



boundary; westward to the Rockies and into California, British Colum- 

 bia and Alaska; along watercourses, where they feed on all kinds of 

 small animals. The nest is in a hollow log or a hole in the ground, and 

 as many as 1 2 young may form the Utter. 



Fig. 158. — Skull of Putorius vison {from Elliot). 



Subspecies of P. vison 



P. V. vison (Scherber). Boreal forests of northern North America; 

 southward to Pennsylvania; Lower Arctic, Hudsonian and Canadian 

 zones. 



