148 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



Thomomys perpallidus (Merriara). 



1886. Thomomys talpoides perpallidus Merriam, Science, viii, 



p. 588. December 24, 1886. 

 1893. Thomomys p)erpcdlklus Allen, BiUl. Amer. raus. nat. 



hist., V, p. 54. April 28, 1893. 

 Type locality. — Colorado Desert, San Diego County, Cali- 

 * fornia. 



Rhoads (Proc. acad. nat. sci. Phila., 1895, p. 37, March 19, 1895) 

 suggests that this may eventually stand as Thomomys fidvus per- 

 pallidus. 



Thomomys quadratus Merriam. 



1897. Thomomys quadratus Merpjam, Proc. biol. soc. Wash- 

 ington, XI, p. 214. July 15, 1897. 

 Type locality. — The Dalles, Wasco County, Oregon. 



Thomomys rufescens Wied. 



1839. Thomomys rufescens Wied, Xova acta phj's. med. acad. 



caes. Leop.-Carol., xix, pt. i, p. 378. 

 1893. Thomomys rufescens Allen, Bull. Amer. mus. nat. hist., 



V, p. 62. April 28, 1893. 

 Type locality.— Missouri River, exact locality not Icnown 

 (see Allen, Bull. Amer. mus. nat. hist., v, p. 62, April 28, 

 1893). 

 Regarded by Allen (Bull. Amer. mus. nat. hist., v, j). 67, April 

 28, 1893) as questionably distinct from T. talpoides. 



* Thomomys talpoides (Richardson). 



1828. dricttus talpoides Richardson, Zool. journ., iii, p. 518. 

 1857. Thomomys talpoides Baird, Mamm. N. Amer., p. 403. 

 1885. Thomomys talpoides talpoides True, Proc. U. S. nat. 



mus., VII (1884), p. 598. 1885. (Part.) 

 Type locality. — Probably Saskatchewan, Canada (see Allen, 

 Bull. Amer. mus. nat. hist., v, p. 55, Ajjril 28, 1893). 



* Thomomys talpoides umbrinus (Richardson). 



1829. Gtomys umbrinus RicHAKDSON, Fauna Boreali-Ameri- 

 cana, i, p. 202. 



1857. Thomomys umbrinus Baird, Mamm. X. Amer., p. 399. 

 1885. Thomomys talpoides umbrinus True, Proc. U. S. nat. 

 mus., VII (1884), p. 599. 1885. (Part.) 



