MILLER AND REHN : NORTH AMERICAN MAMMALS. 135 
1897. Dic7'ostonyX, hudsoniics Bangs, Proc. biol. soc. Wash¬ 
ington, XI, p. 237. September 17, 1897. 
Type locality.— Labrador. 
Dicrostonyx hudsonius alascensis Stone. 
1900. Dicrostonyx hudsonius cdascensis Stone, Proc. acad. 
nat. sci. Phila., p. 37. March 24,1900. 
Type locality.— Point Barrow, Alaska. 
* Dicrostonyx nelsoni Merriam. 
1885. Cwiiculus torquatus True, Proc. P. S. nat. mus., vii 
(1884), p. 596. 1885. (Part.) 
1900. Dicrostonyx nelsoni Merriaji, Proc. Washington 
acad. sci., ii, p. 25. March 14, 1900. 
Type localital— St. Michael’s, Alaska. 
Dicrostonyx richardsoni Merriam. 
1900. Dicrostonyx richardsoyd Merriam, Proc. Washington 
acad. sci., ii, p. 26. March 14, 1900. 
Type localital— Fort Churchill, west shore of Hudson Bay, 
Kewatin, Canada. 
Dicrostonyx unalascensis Merriam. 
1900. Dicrostoyiyx uncdascensis Merriam, Proc. Washing¬ 
ton acad. sci., ii, p. 25. March 14, 1900. 
Type localital —Unalaska, Alaska. 
Family GEOMYIDAE. 
Genus GEOMYS Rafinesque.^ 
1817. Geomys Rafinesque, Amer. monthly magazine, ii, p. 45. 
November, 1817. Type.— Geomys qnnetis Rafinesque (= JSIus 
tuza Ord ). 
1 Revised by Merriam, North Amer. fauna, no. 8, pp. 109-145. January 31, 1895. 
