DICROSTONYX. GEOMYS. 261 



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



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

 NELSON'S LEMMING. 



Type locality. St. Michaels, Alaska. 

 Geogr. Distr. Range unknown. 



c. Dicrostonyx InulxuiiiuH ri clnirdsoni (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. (iteoiiiyiclfe. Pouched Rats. 



Genus 86. Geomys. Pocket Gophers. 



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



Geomys pinetis Rafin. = Mus tuza Ord. 

 Diplostoma Rafin., Am. Month. Mag!, n, No. i, 1817, p. 44. 

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

 Pseudostoma 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., n, 1815, p. 292. 



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



Geomys tuza Elliot, Syn. N. Am. Mamm., F. C. M. Pub., n, 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. (reoinys tuza florid-anus (Audubon & Bachman). 



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



p. 242. 

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



11, 1901, p. 215. Zool. Ser. 



