MAMMALIA. 17 



GLIRES. SIMPLICIDENTATA. 



MURIDAE. 



42. P'iBER ziBETHicus (Linne.) Cuvier. 



Muskrat ; Musquash. 



Castor zibethicus Linne, Syst. nat., ed. 12, 1766, vol. 1, p. 79. 

 " Canada." 



Fiber zibethicus (Linne). Elliot, Field Columb. mus., zool. ser., 



1901, vol. 2, p. 212-213, fig. 49. 



Fiber zibethicus Linne. Stone & Cram, Araer. animals, 1902, 

 p. 121-126, 1 pi. 



Along streams and lakes, and in marshes. 

 Me. to Conn. 



43. Synaptomys cooperi Baird. 



Cooper's lemming mouse ; Bog lemming. 



H'ijnaptomys cooperi Baird, Pacific Railway rept., 1857, vol. 8, 

 p. 558. " Probably prom the New England States, or New 

 York." 



Synaptomys cooperi Baird. Merriara, Proc. biol. soc. Wash- 

 ington, 1896, vol. 10, p. 58, fig. 2. 



Synaptomys cooperi Baird. Stone & Cram, Amer. animals, 



1902, p. 107-108, fig. 6 on pi. facing p. 110. 



Sphagnum bogs and swampy woods. 



Me. — Mt. Katalidin. 



Mass. — Plymouth; Wareham. 



44. Synaptomys fatuus Bangs. 



Northern lemming mouse. 



Synaptomys fatuus Bangs, Proc. biol. soc. Washington, 1896, 

 vol. 10, p. 47-48. "Lake Edward, Quebec." 



Sphagnum bogs and damp forests of Hudsonian zone. 

 Me. — Eagle Lake, Aroostook County ; Mt. Katahdin (inter- 

 mediate ?). 

 N. H.— Mt. Moosilauke (4,800 ft.). 



