260 LEMMUS. DICROSTONYX. 



631. Lemmus nigripes (True). 



Myodes nigripes True, Proc. U. S. Nat. Mus., xvn, 1894, p. 242. 



Lemmus nigripes Elliot, Syn. N. Am. Mamm., F. C. M. Pub., n, 



1901, p. 209. Zool. Ser. 

 BLACK-FOOTED LEMMING. 



Type hh'dlity. St. George Island, Pribilof Islands, Bering Sea. 



Geogr. Distr. Known only from the type locality. 



Genus 85. Dicrostoiiyx. Forked-claw Lemmings. 



Dicrostonyx (Hog., Gem. Hand- u. Hilfsb. Naturg., 1841, pp. xxxi, 



97- Type M its hudsonius Pallas. 

 Cunicnlns Wagl., Nat. Syst. Amph., 1830, p. 121. 

 Myolemmus Pomel, Cat. Me"th. Vert. Foss. Bass. Loire, 1854, p. 27. 

 Misothermus Hensel, Zeitsch. Deutsch. Geol. Gesellsch., vn, 1855, 



p. 492. (Part.) 

 Borioikon Poliakoff, Ann. au tome xxxix, Mem. Acad. St. Pe"tersb., 



No. 2, 1881, p. 35. 



Tylonyx Schulze, Mamm. Europ. Hel. Abhandl. u. Vortrage 

 Gesammtg. Naturw., Berlin, xiv, 1897, P- 8 3- 





 632. Dicrostonyx hudsonius (Pallas). 



M us hudsonius Pall., Nov. Spec. Quad. Glir. Ord., 1778, p. 208. 

 Dicrostonyx hudsonius Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 



n, 1901, p. 209. Zool. Ser. 

 HUDSONIAN LEMMING. 



Type locality. Labrador. 



Geogr. Distr. Labrador. Range unknown. 



a. DicroxftHi ij.v Innlxoniiix n inilnxn-iixix (Merriam). 



Dicrostonyx unalascensis Merr., Proc. Wash. Acad. Scien., n, 



1900, p. 25. 

 Dicrostonyx hudsonius unalascensis Elliot, Syn. N. Am. Mamm., 



F. C. M. Pub., n, 1901, p. 210. Zool. Ser. 

 UNALASKA LEMMING. 



Type locality. Unalaska, Alaska. 

 Geogr. Distr. Range unknown. . 



I). Diri-oxlninj.v li n <l HIHI i n H iirlxnni (Merriam). 



J Dicrostonyx nelsoni Merr., Proc. Wash. Acad. Scien., n, 1900, 



P- 25- 

 Dicrostonyx hudsonius alascensis Stone, Proc. Acad. Nat. Scien. 



Phil., 1900, p. 37. 



