Collected 1 SYNAPTOMYS DALLI (=BOREALIS) a small peat bog near Hope. Gives description and 

 measurements. 



Osgood, W. H. 1907. Some unrecognized and misapplied names of American mammals. Proc. 

 Biol. Soc. Wash. 20:43-52. 



Redescribes Type specimen and gives some of original description of ARVICOLA (=SYNAPTOMYS) 

 BOREALIS from Richardson (1828). 



Osgood, W. H. 1909. Biological investigations in Alaska and Yukon Territory. N. Amer. Fauna 

 30. 86 pp. 



For SYNAPTOMYS BOREALIS: "Rather rare, only 4 specimens taken" in E Central AK. 1 taken in a "grassy 

 swamp" other 3 near timberline at the head of Seward Creek. In the Ogilvie Range 2 were taken in "cold 

 Swamps." In the MacMillan region 5 were taken in a sphagnum swamp near mouth of Russell Creek. 



Pearson, D. E. 1991. The northern bog lemming in Montana and the contiguous United States: 

 Distribution, Ecology and relic species theory. Unpubl. Senior Thesis, Univ. Mont., 

 Missoula. 33 pp. 



SYNAPTOMYS surveys were conducted with Sherman live traps at 16 sites. Describes 4 new lemming capture 

 sites in Glacier National Park (McGee Meadows (1 animal), Little McGee Meadows (2), Numa Ridge Bog (1), 

 and McDonald Creek (1)) and a new specimen from the known Shoofly Meadows site [see Adelman 1979]. 

 The McDonald Creek site was part of a general small mammal project and has been surveyed on multiple 

 occasions but only a single lemming has been captured. This site is in old-growth western hemlock (TSUGA 

 HETEROPHYLLA) without typical bog/fen habitat (includes plant list). The other sites are all typical bog/fen 

 habitat with thick sphagnum moss mats and are structurally described in some detail with vegetation mentioned 

 to the generic level. Other small mammals captured at lemming sites included: CLETHRIONOMYS 

 GAPPERI, PEROMYSCUS MANICULATUS, SOREX spp., MICROTUS spp, TAMIAS spp. Trapping 

 yy success w?s 1 lemming per 806 Sherman live trap-nights (16 sites with 4030 TTM). Mortality rate for lemmings 



was 60%(9!3 of 5). Tracking board sampling was tried, but lemming dropping could not be differentiated from 

 MICROTUS (CLETHRIONOMYS and SOREX could be). Includes a summary of most of the specimens taken 

 in the lower 48 states. Good discussion of research methodologies and distribution. 



Peterson, R. L. 1966. The mammals of eastern Canada. Oxford University Press. Toronto, 

 Canada. 465 pp. 



Good general reference; body measurements; references. For SYNAPTOMYS BOREALIS: rarest rodent in 

 collections for eastern Canada. Description. Notes that 2 specimens taken in mid-January and mid-April at 

 Indian House Lake, Quebec, showed extreme enlargement of 2 middle claws on the front feet; it is unknown if 

 this is normal since only 2 specimens have ever been taken during this season. A series of 6 specimens taken in 

 northern Quebec were from a dry, partly wooded habitat. Specimens of three pregnant females in the Royal 

 Ontario Museum taken in June had 4, 4, and 7 embryos. 



Preble, E. A. 1899. Description of a new lemming mouse from the White Mountains, New 

 Hampshire. Proc. Biol. Soc. Wash. 13:43-45. 



Description of the subspecies SYNAPTOMYS BOREALIS SPHAGNICOLA based on one specimen trapped at 

 Fabyans (1600') near the base of Mt. Washington on 29 June 1 898. Habitat "is swampy and quite densely 



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