208 CONTRIBUTIONS TO THE NATURAL HISTORY OF ALASKA. 



Putorius vulgaris Linn6. Least Weasel. 

 All the mainland of Alaska. 



Putorius erminea (Linn6) Griffith. Ermine; Stoat. 

 This species has the same range as the preceding. 



Genns Mustela. 



Mustela pennanti Erxleben. Pelian ; Pennant's Marten; Fisher. 

 Occurs sparingly in the upper Yukon Valley ; rather more abundant in the heavier timbered 

 regions to the south. 



Mustela Americana Turtou. Marten ; American Sable. 

 Yery plentiful in the wooded areas; occasionally venturing to the rocky, barren tracts of the 

 mainland only. 



Family OANIDJ3. The Dogs. 



Genus Vulpes. 



Vulpes fulyus pulvus (Desmarest). Bed Fox. 

 All the mainland, excepting the immediate north coast; Saint Lawrence Island; Aleutian 

 Islands as far west as Umnak. 



Vulpes fulyus argent atus (Shaw) Aud. and Bach. Silver Fox; Black Fox. 

 All of Alaska, excepting the extreme western Aleutian Islands, Pribylof Group and Saint 

 Mathew's Island. 



Vulpes fulyus decussatus (Desm.). Cross Fox. 

 All of Alaska, excepting certain islands to the extreme west of the chain, the Pribylof Group 

 and (?) Saint Mathew's. 



Vulpes lagopus (Linn6) Gray. White Fox ; Arctic Fox ; including the Blue Fox. 

 The White Fox occurs only in the more northern portions of the mainland ; occasionally car- 

 ried to the more northern islands of Bering Sea by means of ice fields. The Blue Fox occurring 

 on the mainland south of the Arctic circle and on all of the Aleutian islands, attaining best con- 

 dition on the Pribylof Group and the western Aleutian Islands. At the latter place it is the only 

 terrestrial mammal. 



Oanis lupus griseo-albus (Linn). Sabine. Gray Wolf. 

 This wolf ranges over all the mainland of Alaska. On the Aleutian Islands it occurs only 

 on Unimak ; attaining that locality bj T crossing on the ice, from the north, jamming into "False", 

 or Isanotsky, Pass, separating that island from Aliaska. 



Family FELID^B. The Cats. 

 Genus Lynx. 



Lynx borealis canadensis (Gray) Mivart. Canada Lynx. 



Wooded portions of the mainland; rarely wandering on the treeless areas. 



(Future investigations into the natural history of Alaska and its neighboring waters will cer- 

 tainly reveal many additional species to be added to the list given in this connection and may re- 

 quire a revision of some of those already listed.) 



