160 LAND MAMMALS IN THE WESTERN HEMISPHERE 



Fig. 72. — Boreal Mammals. A. Black-footed Forret {Mustela nigripes). B. Otter 

 (Lutra canadensis). C. Jumping Mouse {Zapus hudsonius) . — A and B by permis- 

 sion of the N.Y. Zoolog. Soc. C, by permission of W. S. Berridge, London. 



