Single immature taken, with description and measurements. 



Dalquest, W. W. 1948. Mammals ofWashington. University of Kansas Mus. Nat. Hist. Publ. 

 2:1-444. 



Distributional accounts which include brief descriptions and accounts of habits; dot and associated shading on 

 maps; key to spp. SYNAPTOMYS BOREALIS shows known 2 locations and a possible location (later verified 

 by Wilson, Johnson and Reichel 1980). 



Dearden, L. C. 1958. The baculum in LAGURUS and related Microtines. J. Mammal. 

 39:541-553. 



Describes variation in the baculi of LAGURUS. Compares baculi across Microtine genera including LEMMUS, 

 SYNAPTOMYS, DICROSTONYX, CLETHRIONOMYS, PHENACOMYS, and MICROTUS (drawings). 

 SYNAPTOMYS is shown to be most closely related to DICROSTONYX. 



Dice, L. R. 1921. Notes on the mammals of interior Alaska. J. Mammal. 2:20-28. 



Records of unusual specimens taken in Alaska. Two SYNAPTOMYS BOREALIS taken, one in scrub willows 

 and one in horsetails. 



Downing, S. C. 1940. First Ontario record of the subgenus MICTOMYS. Can. Field-Nat. 

 54:109-110. 



One immature male 25 July 1939 at Moosonee, Ontario. Taken on an open bank of a small creek draining a bog. 

 Surrounding area had spruce trees and deep mossy ground cover. Measurements and description. 



Dutcher, B. H. 1903. Mammals of Mt. Katahdin, Maine. Proc. Biol. Soc. Wash. 16:63-72. 



Describes 36 mammals known from Mt. Katahdin. For SYNAPTOMYS BOREALIS, 2 were trapped in balsam 

 scrub by a spring at 4500 ft. during >270 trap-nights. 



Edwards, R. L. 1963. Observations on the small mammals of the southeastern shore of 

 Hudson Bay. Can. Field-Nat. 77:1-12. 



Caught 25 individuals at 5 sites (185 trap-nights); most were caught in open, very wet places. No scat piles or 

 cuttings were associated with this species. Only 2 showed breeding activity, a male with scrotal testes on 23 

 Aug and a female with 3 embryos on 10 Sept. Most mice appeared to be yearlings. There appeared to be t\vo 

 litters per year, with some young breeding the same summer they were bom. Description & measurements. 



Foresman, K. R. and D. E. Pearson. 1990. Ecology of the northern bog lemming [abstract]. 

 Sci. Glacier Natl. Park 1990, Ann. Rep. Coop. Park Studies, p. 41. 



Relocated lemmings at Shoofly Meadows site [Adelman 1979] and found lemmings in Numa Ridge Bog in 

 1990. 



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