(Heterodon nasicus). Gopher Snake (Pituophis catenifer). Plains Garter Snake (Thamnophis 

 radix), and Western Rattlesnake (Crotalus viridis). 



I searched for suitable habitat for northern bog lemmings while traveling to and 

 conducting reptile and amphibian surveys across the study area. The only site within the study 

 area with even marginally suitable habitat was Blackleaf Swamp. Northern bog lemmings were 

 not captured there, nor at nearby Pine Butte Swamp. At both sites however. 4-5 species of other 

 small mammals were captured, including masked shrews (Sorex cinereus), montane shrews 

 {Sorex monticolus), water shrews (Sorex palustris), meadow voles {Microtus pennsylvanicus), 

 and deer mice {Peromyscits maniculatus). 



The habitat on the study area appears to be very limited for northern bog lemmings; the only 

 suitable site seen was trapped. Trapping intensity was probably sufficient to detect lemmings 

 had they been present; more surveys are not warranted at this time. Additionally, many meadow 

 voles were captured at Blackleaf and bog lemmings have not been found at sites with high 

 numbers of meadow voles also present at any Montana location (Reichel and Beckstrom 1993, 

 1994). It seems unlikely that bog lemmings are actually present, but went undetected at this site. 



IV 



