GREENLAND COLLARED LEMMING, Dicrostonyx groenlandicus 



(Kilakmiutak) 



Range. — ^Coastal and adjoining Arctic areas, 

 Alaska to Labrador and Greenland. 



Tlnhifaf. — Tundra and zone beyond tree line, 

 usually in soils with some plant cover ; dry uplands 

 in Brooks Range, wet habitats on Arctic coastal 

 plain. 



Races in Alaska. — The mainland races are rubri- 

 catus (type locality: American side of Bering 

 Strait) ; nelsonl (type locality: St. Michael, Nor- 

 ton Sound) ; and peninsulas (type locality : Urilia 

 Bay, Unimak Island) . Two Aleutian Island forms 

 are unalascensls (type locality : Unalaska Island) 

 and stevensoni (type locality: Umnak Island), 

 both restricted to the type localities; these are 

 regarded by some as a full species, lonaUiscemi-s. 



Related species. — Dicrostonyx exsul (type lo- 

 cality: St. Lawrence Island) is known only from 

 this site; it differs only slightly from the miiinliiud 

 forms. 





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