Lemmus, Dicrostonyx. 



463 



a. — t crassidens, NehriDg,S.-B. Ges.Natur. 

 Fr. Berl., 1899, p. 55, 56 ; Archiv. Naturg., 

 I, 1899, p. 175, 177 et 178, fig. 1. 



4683.obensis, Braiits — (3289, exclus, syn.: 

 »tnmucw)iatHS«y 



j obensis foss., Nehring — (3289 Apj^.). 



a. — chrysogaster, xlUen, Bull. Amer. 



Mus., 1903, p. 151. 



schisticolof, p., Middendorff (nec Lillje- 

 borg), Sib. Eeis. Saug., 1853, p. 108. 

 4684.schisticolor, Lilljeborg -- (3290). 



4685.trimucronatus, Richardson — (3289 part.); 

 Elliot, 1. c, 1901, p. 207, 208, f. 47; Preble, 

 N.-Am. Fauna, 22, 1902, p. 54. 



albogularis,Wa,g[ei\ Schi'eb, Suppl., 1843, 

 3, p. 602. 



a. — alascensis, Merriam, Proc. Wasb. 

 Acad.. 1900. p. 26 ; Osgood. N.-A. Fauna, 

 19, 1900, p. 37. 



b. — yukonensis, Merriam, 1. c, 1900, 

 p. 27; Osgood, 1. c, 1900, p. 38; Elliot, 

 1. c, 1901, p. 208. 



c. — helvolus, Eicbardsou. Fauna Bor.- 

 Amer... 1829, p. 128; Elliot, 1. c, 1901, 

 p. 208; Allen, Bull. Amer. Mus., 1903, 

 p. 556. 



True — (3291); Elliot, 1. c, 

 209. 



4686. nigripes. 



1901, p, 



f Pleistocaen. 

 Lusitania. 



Europa et Asia Sept., 



à Mari Albo ad 



Kamtscbatka. 



I Pleistocaen. 

 Europa média. 



Siberia Orient. 



(Gicbiga, ad littora 



Occ. Maris Okhotsk). 



Europa Boreali 



(Scandinavia, Fennia, 



nec Siberia Orient). 



America Arctica, 



(PointLake, 65Mat.), 



Hudson Bay, Kee- 



watin, (ad fl. 



Thlewiaza). 



Alaska 

 (S* Michael). 



Reg. fl. Yukon 



(Chàrlie Creek, Rink 



Rapids). 



America Arctica, 



(Alpine Swamps, 



56" lat.), Columbia 



Britann. 



Alaska Occ, 



(I.S^ George, 



I. Pribilof). 



715. Dicrostonyx, Gloger, 1841. 



Cnniculus, p., Wagler, 1832; MisotJiermus, Hensel, 1855; 



Borioikon, Poliakoff, 1881; Tylonyœ, Schulze, 1897; 



f Myoleïnmtis, Pomel, 1854. 



Gloger, Gem. Hand- und Hilfsb. der Naturg., 1841, p. 79. 



4687.torquatus, Pallas — {3292, 3292, exclus, 

 synon. : »hudsomus«, ^groenlmtdicus^ et 

 y>ungulatHs«); Allen, Bull. Amer. Mus., 

 1903, p. 151. 



f torqiiatusfoss., Nehring — (3292 App-). 



Europa et Asia 



Arcticae à Lapponia 



ad Siberiam Or.,Kamt- 



schatka (Gichiga). 



f Pleistocaen. 



Europa média. 



