THE MAMMALS OF NEW JERSEY. (i^ 



the individuals inhabiting the mountains differed shghtly from 

 those of the Atlantic plain and named the latter Synoptomys 

 stonei, but there seems to be no constant difference between the 

 two. 



Coopers' Lemming Mouse is an inhabitant of cold, wet bogs, 

 where it lives in runways through the sphagnum, in company with 

 the meadow mouse, red-backed mouse and long-tailed shrew. 

 It is harder to catch than the other species, which may account 

 for its apparent rarity. We know practically nothing of its habits 

 though it probably feeds on the roots of swamp plants of various 

 sorts. 



Synaptomys cooperi Baird, Mammals of N. America, p. 558. 



Synaptomys stonei Rhoads, Amer. Naturalist, 1893, p. 53. — 

 Bangs, Proc. Biol. Soc. Wash., 1894, p. 99. 



Synaptomys cooperi stonei Rhoads, Proc. Acad. Nat. Sci. 

 Phila., 1897, p. 305 and 392. 



Synaptomys stonei Rhoads, Amer. Naturalist, 1893, P- 53- — 

 Bangs, Proc. Biol. Soc. Wash., 1894. 



Synaptomys cooperi stonei Rhoads, Proc. Acad. Nat. Sci. 

 Phila., 1894, p. 392, and 1897, p. 305. — Rhoads, Mam. Pa. and 

 N. J., 1903, p. 106. 



Synaptomys cooperi Rhoads, Mam. Pa. and N. J., 1903, p. 106. 



Genus Evotomys Coues. 



Red-Backed Mice. 



Evotomys gapperi rhoadsi Stone. 



Rhoads' Red-Backed Mouse. 



Plate 21, Fig. i. 



Length 5.60 inches. Ears just visible above the fur, color red- 

 dish chestnut with numerous black hairs interspersed on the back, 

 sides buffy, below whitish, somewhat suffused with buff, feet light 

 gray, tail brown above, gray below. 



I discovered this interesting mouse in a bog near May's Land- 

 ing, October 25, 1892, securing a specimen in the large runways 



