332 U. S. NATIONAL MUSEUM BULLETIN 205 



Thomomys simulus parviceps Nelson and Goldmanf * 



1934. Thomomys simulus parviceps Nelson and Goldman, Journ. Mamm., vol. 

 15, No. 2, p. 121, May 15, 1934. 



Type Locality. — Chacala, western Durango, Mexico. Altitude, 3,000 feet. 

 Range. — Subtropical western slope of Sierra Madre in western Durango and 

 probably adjoining parts of Sinaloa, Mexico. 



Subgenus MEGASCAPHEUS Elliot 



1903. Megascapheus Elliot, Field Columb. Mus. Publ. 76, Zool. Ser., vol. 3, 

 No. 11 (May) , p. 190, July 25, 1903. (Type Diplostoma bulbivorum Rich- 

 ardson.) 



Thomomys bulbivorus (Richardson)* 



1829. Diplostoma bulbivorum Richardson, Fauna Boreali-Americana; . . . , 



vol. 1, p. 206. 

 1858. Thomomys bulbivorus Baird, Mammals, in Rept. Expl. Surv. Railr. to 



Pacific, vol. 8, pt. 1 (Washington, 1857) , p. 389, July 14, 1858. 

 1893. Thomomys bulbivorus Miller, Bull. Amer. Mus. Nat. Hist., vol. 5, p. 57, 



April 28, 1893. 

 Type Locality. — Banks of the Columbia River, probably near Portland, Multno- 

 mah County, Oreg. Range. — Willamette Valley, Oreg., from Portland and 

 Forest Grove south to Eugene, and west to Grand Ronde Valley (V. Bailey, 

 North Amer. Fauna No. 55 (June) , p. 249, Aug. 29, 1936) . 



Genus GEOMYS n Rafinesque 

 1817. Geomys Rafinesque, Amer. Monthly Mag., vol. 2, No. 1, p. 45, Novem- 

 ber 1817. (Type Geomys pinelis Rafinesque = Mus tuza Barton.) 



pinetis — group 

 Geomys pinetis pinetis Rafinesque* 



1806. Mus tuza Barton, Mag. neuest. Zust. Naturk., vol. 12, p. 488, November 

 1806. (Restricted to pine barrens near Augusta, Richmond County, Ga., by 

 Bangs, Proc. Boston Soc. Nat. Hist., vol. 28, No. 7, p. 175, March 1898. Re- 

 garded as unavailable by Harper, Proc. Biol. Soc. Washington, vol. 65, p. 36, 

 Jan. 19, 1952) . 

 1817. Geomys pinetis Rafinesque, Amer. Monthly Mag., vol. 2, No. 1, p. 45, 

 November 1817. (Regarded as identical with tuza by Merriam, North 

 Amer. Fauna No. 8, p. 113, Jan. 31, 1895.) 

 1875. Geomys tuza Coues, Proc. Acad. Nat. Sci. Philadelphia, vol. 27, p. 132. 

 1884. Geomys tuza True, Proc. U. S. Nat. Mus., vol. 7 (App., Circ. 29) , p. 



599, Nov. 29, 1884. 

 Type Locality. — Georgia, in the region of the pines (restricted to Screven 

 County, Ga., by Harper, loc. cit.). Range. — Pine woods of eastern Georgia, 

 from Savannah River south at least to Sterling, Glynn County, and west to west- 

 ern Georgia, where it begins to merge with mobilensis (Bangs, loc. cit.). 



Geomys pinetis mobilensis Merriamf * 



1895. Geomys tuza mobilensis Merriam, North Amer. Fauna No. 8, p. 119, 

 Jan. 31, 1895. 



w Revised by Merriam, North Amer. Fauna No. 8, pp. 109-145, Jan. 31, 1895. 



