NORTHERN BOG LEMMING, Synaptomys borealis 



Range. — Transcontinental south of limit of 

 trees throughout most of Canada. 



Hahitaf. — "Wet tundi"as and sphagnum bogs, oc- 

 casionally in diy or moist meadows. 



Races in AI<iska. — The widespread form in 

 Alaska is daUi (type locality: Nulato, Yukon 

 River) ; icrangeli (type locality: Wrangell, Alex- 

 ander Archipelago) occuisies a few islands and 

 the mainland near the mouth of the Stikine River. 



25 



