carpeted with moss..." Associated species included MICROTUS, PEROMYSCUS, BLARINA, 

 CLETHRIONOMYS, ZAPUS HUDSONICUS, and NAPOZAPUS INSIGNUS. 



Preble, E. A. 1902. A biological investigation of the Hudson Bay Region. N. Amer. Fauna 22. 

 140 pp. 



For SYNAPTOMYS BULLATUS (=BOREALIS): Only trapped 2 specimens, one near Norway House. The 

 other was a female with 6 embryos in a swamp bordering the Echimamish River on June 25. 



Preble, E. A. 1902. Descriptions of new species of SYNAPTOMYS and PHENACOMYS from 

 MacKenzie, Canada. Proc. Biol. Soc. Wash. 15:181-182. 



Description of new species SYNAPTOMYS BULLATUS (=S. BOREALIS) from Great Slave Lake, Canada 

 from a skin and skull of adult male. 



Preble, E. A. 1908. A biological investigation of the Athabaska-Mackenzie Region. N. Amer. 

 Fauna 27. 574 pp. 



For SYNAPTOMYS BOREALIS: took 8 near site (Ft. Franklin) of those originally described by Richardson 

 (1829) and quotes extensively from that paper. Caught one female with 4 embryos. Habitat at various sites 

 where lemmings were captured include: 1) border of a small meadow; 2) wet swamp; 3) near small muskeg 

 ponds; and 4) marsh. Says Loring found SYNAPTOMYS rather common in October in a sphagnum swamp and 

 caught about a dozen. Gives measurements and descriptions and merges S. DALLI with S. BOREALIS as S.B. 

 DALLL 



Prince, L. A. 1942. SYNAPTOMYS BOREALIS from Fort Severn, Hudson Bay, Ontario. J. 

 Mammal. 23:216. 



An immature male SYNAPTOMYS BOREALIS was trapped at Ft. Severn on 1 1 July 1940. Was taken in a 

 "water trap" on alder and willow bordered bank of a stream draining a black spruce bog. Gives measurements of 

 the single specimen. 



Rand, A. L. 1945. Investigations on the Canal Road, Yukon and Northwest Territories, 1944.. 

 Natl. Mus. Can. Bull. 99. 



For SYNAPTOMYS BOREALIS: 7 taken in 400 trap-nights in open, wet moss, sedge, willow and spruce 

 swamp on Lapie River. Also taken were MICROTUS PENNSYLVANICUS. At Mount Sheldon 12 were taken 

 in marshy sedge fringing ponds in a dwarf birch flat 1 1-15 Aug. On 22-25 Aug 7 were taken in a wet grassy 

 glade on the Macmillan River. In all cases the species was very local, with none being caught during extensive 

 trapping in the surrounding area. 



Rand, A. L. 1945. Mammals of Yukon. Natl. Mus. Can. Bull. 100. 93 pp. 



For SYNAPTOMYS BOREALIS: description and measurements. States "...scarce animal, found in grass and 

 sedge areas in bogs and marshes where it makes runways" but no indication this is based on observations or 

 literature or? 



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