DICROSTONYX. GEOMYS. 261 



Dicrostonyx httdsoniiis nelsoni Elliot, Syn. N. Am. Mamm., F. C. M. 

 Pub., II, 1901, p. 210, fig. 48. Zool. Ser. 

 Nelson's Lemming. 



Type locality. St. Michaels, Alaska. 

 Geogr. Distr. Range unknown. 



0. Dicrostonyx hinlsonins Ticharclgoiii (Merriam). 



Dicrostonyx richardsoni Merr., Proc. Wash. Acad. Scien., n, 1900, 



p. 26. 

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

 F. C. M. Pub., II, 1901, p. 211. Zool. Ser. 

 Fort Churchill Lemming. 



Type locality. Fort Churchill, west shore of Hudson Bay, Kee- 

 watin, Canada. 



Geogr. Distr. Hudson Bay region. Range unknown. 



Family V. <ii<M»iii,vi<I:i'. l*4nu*lMMl KatK. 



Genus 86. (icoiiiys. I*<u*ket (iophers. 



Qeomys Rafin., Am. Month. Mag., 11, No. i, 1817, p. 45. Type 

 Geomys pinetis Rafin. = ^^liis tuza Ord. 

 Diplostoma Rafin., Am. Month. Mag., 11, No. i, 181 7, p. 44. 

 Saccophorus Kuhl, Beitr. Zool. und vergl. Anat., 1820, p. 65. 

 Psendostoma Say, Long's Exped. Rocky Mts., i, 1823, p. 406. 

 Ascomys Licht., Abhand. K. Akad. Wiss. Berl., 1825, p. 20, fig. 2. 



633. Geomys tuza (Ord). 



Mus tuza Ord, Guthr. Geogr., 2d Amer. ed., 11, 1815, p. 292. 



Geomys pinetis Rafin., Am. Month. Mag., 11, No. i, 1817, p. 45. 



Geomys tuza Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 1901, 

 p. 215, fig. 50. Zool. Ser. 

 Pine Barrens Pocket Gopher. 



Type locality. Pine barrens near Augusta, Richmond County, 

 Georgia. 



Geogr. Distr. Pine barrens of Georgia, and possibly northern 

 Florida. 



a. (rpoiiry.^ hiza flnvuhniJis (Audubon & Bachman). 



Pseudostoma floridana Aud. & Bachm., N. Am. Quad., iii, 1854, 



p. 242. 

 Geomys tuza floridanus Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 



II, 1901, p. 215. Zool. Ser. 



