Lemmus, Dicrostonyx. 
463 
a. — f crassidens, Nehring,S.-B. Ges.Natur. 
Fr. Berl., 1899, p. 55, 56 ; Archiv. Naturg., 
I, 1899, p. 175, 177 et 178, fig. 1. 
4683. obensis, Brants — (3289, exclus. syn.: 
» trimucronatus « ). 
f Pleistocaen. 
Lusitania. 
Europa et Asia Sept., 
a Mari Albo ad 
Kamtsckatka. 
f obensis foss., Nekring — (3289 App.). 
a. — chrysogaster, Allen, Bull. Amer. 
Mus., 1903, p. 151. 
schisticolor, p., Middendorff (uee Lillje- 
borg), Sib. Reis. Saug., 1853, p. 108. 
4684.schisticolor, Lilljeborg — (3290). 
4685. trimucronatus, Richardson — (3289 part .); 
Elliot, 1. e., 1901, p. 207, 208, f. 47 ; Preble, 
N.-Am. Fauna, 22, 1902, p. 54. 
albofjutaris, Wagler, Schreb. Suppi., 1843, 
3, p. 602. 
a. — alascensis, Merriam, Proc. Wasli. 
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. Richardson, Fauna Bor- 
Amer., 1829, p. 128; Elliot, 1. c., 1901, 
p. 208; Allen, Bull. Amer. Mus., 1903, 
p. 5-56. 
4686. nigripes. True — (.72.9/); Elliot, 1. c., 
1901, p. 209. 
f Pleistocaen. 
Europa media. 
Siberia Orient. 
(Gichiga, ad littora 
Occ. Maris Okhotsk). 
Europa Boreali 
(Scandinavia, Fennia, 
nec Siberia Orient). 
America Arctica, 
(Point Lake, 65° lat.), 
Hudson Bay, Kee- 
watin, (ad fl. 
Thlewiaza). 
Alaska 
(S l Michael). 
Reg. fl. Yukon 
(Charlie Creek, Rinlc 
Rapids). 
America Arctica, 
(Alpine Swamps, 
56° lat.), Columbia 
Britann. 
Alaska Occ., 
(I.S* George, 
1. Pribilof). 
715. Dicrostonyx, Gloger, 1841. 
Cuniculus, p., Wagler, 1832; Misothermus, Heusel, 1855; 
Borioikon, Poliakoff, 1881; Tylonyx, Schulze, 1897; 
-j- Myolemmus, Pomel, 1854. 
Gloger, Gem. Hand- und FI ilfsb. der Naturg., 1841, p. 79. 
O 1 
4687. torquatus, Pallas — (3292, 3292, exclus. 
synon.: »hudsonius«, » groenlaudicus < et 
»unffulatus«) ; Allen, Bull. Amer. Mus., 
1903, p. 151. 
-j- torquatus foss., Nehring — (3292 App.). 
Europa et Asia 
Arcticae a Lapponia 
ad Siberiam Or.,Kamt- 
schatka (Gichiga). 
t Pleistocaen. 
Europa media. 
