ARCTIC GROUND SQUIRREL, Citellus parryi 



(Sikrik) 



Range. — Arctic North America from Alaska to 

 Hudson Bay. 



Habitat. — Well-drained soils in tundra, from 

 sea level to the uplands. 



Races in Ala^ska. — Along the Arctic coast from 

 Point Hope eastward is barroive^isis (type local- 

 ity : Point Barrow) ; the race plesius occurs in east- 

 central Alaska and widely in the Alaska Range; 

 ahli(.siis (type locality: Nushagak) occupies west- 

 central Alaska to the tip of the Alaska Peninsula, 

 mainly south of tlie Yukon; nebulicola (type lo- 

 cality : Nagai Island) occurs only on the Sliumagin 

 Islands of Nagai, Simeonoff, and Koniuji ; lyratu-s 

 (type locality: Iviktook [now Ivectok] Lagoon, 

 St. Lawrence Island) is known only from that 

 island. 



Related forms. — Described as full species, but 

 probably only races of parryi, are Citelht.s kodi- 

 acensis (type locality: Kodiak Island), known 

 only from the type locality, and Citellus osgoodi 

 (type locality: Fort Yukon) from the Yukon 

 Valley. 



Introductions. — The Arctic ground squirrel (6'. 

 p. ablusus) has been introduced on Umnak, Una- 

 laska, and Kavalga Islands of the Aleutians. 



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