DICROSTONYX. GEOMYS. 261 



Dicrostonyx hudsonius 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. 



c. Dicrostonyx hudsonius richardsoni (Merriam). 



Dicrostonyx richardsoni Merr., Proc. Wash. Acad. Scien., ii, 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. ^ireoiiiyidie. Pouched Rati«. 



Genus 86. Geoiiiys. Pocket (iopherH. 



Qeomys Rafin., Am. Month. Mag., 11, No. i, 181 7, p. 45. Type 

 Geomys pinetis Rafin. = Mus tuza Ord. 

 Diplostoma Rafin., Am. Month. Mag., 11, 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., i8'25, p. 20, fig. 2. 



633. Qeomys tura (Ord), 



Mus tuza Ord, Guthr. Geogr., 2d Amer. ed., 11, 181 5, 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. (reoDii/s tuza florid (ivr(s (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., 



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



