11 



Mux agrarius, Godnian, Am. Nat. Hist. i. 3d ed. 1860, 316 (also in the 



earlier editions). 

 Gricetus myoides, Gapper, Zool. Journ. v. 1830, 204, pi. 10 (Canada). 

 Hei^peromys myoides, Baird, M. N. A. 1857, 472 (Vermont, based on 



Gapper"). 

 Arvicola emmoimi, DeKay, Rep. Quad. Mass. 1840, 61. 

 Musciilus Iciicojrus, Rat'., Amer. Month. Mag. iii. 1818, 446. 

 Mm leucojms, Desm., Mamm. ii. 1822, 807 ; and of authors. 

 Hesperomyii leucopm, Le C, P. A. N. S. P. vi. 1852, 413, and of authors. 

 Ilesperoi/iys maniculutus, Wagn., Wieg. Arch. ii. 1843, 141, and ii. 



1845, 148; Abh. Akad. Wissen., v. 1848, 316 (Labrador). 

 Hesperomys polio notus, Wagn., Wieg. Arch. ii. 1843, 52 (Georgia). 

 Hesperomys camj}estris, Le C, P. A. N. S. P. vi. 1853, 413 (New 



Jersey). 

 Eeaptermys texanus, Woodh., P. A. N. S. P. vi. 1853, 242 (Texas). 

 Heffperomys cognutm, Le C, P. A. N. S. P. vii. 1855, 442 (Southern 



States). 

 ITesperomys gracilis, Le C, P. A. N. S. P. vii. 1855, 442 (Northwest 



States). 

 Hesperomys austerus, Bd., P. A. N. S. P. vii. 1855, 336 (Washington 



Territory). 

 Hesperomys boylii, Bd., P. A. N. S. P. vii. 1855, 335 (California). 

 Hesperomys gamheli, Bd., M. N. A. 1857, 464 (Pacific Coast, U. S.). 

 ? Hesperomys indianus, Maxim., Arch. f. Naturg. xviii. 1862, 111 {fide 



Alleri). 

 [Ifofe. — The above synonymy is exclusive of the several geographical 

 varieties of this species which may be recognized.] 



Hab. North America generally. 



la. Hesperomys (Vesperimus) leucopus gossypinus (Le C). 

 Syn. Hesperomys gossypinus, Le Coute, P. A. N. S. P. vi. 1853, 411 

 (Georgia). 

 HypudcEus gossypinus, Le C, McMurtrie's Cuvier, i. 434, App. 



Hab. South Atlantic States. 



1^. Hesperomys (Vesperimus) leucopus sonoriensis (Le C). 

 Syn. ? Mu,s leucopus. Rich., Zool. Journ. iii. 1818, and F. B. A. i. 1829, 

 142. 



Hesperomys sonoriensis, Le C, P. A. N. S. P. vi. 1853, 413 (Sonora). 



Hesperomys sonoriensis, var. nebrasccnsis, Bd. M. N. A. 462, in text. 



Hab. Interior of North America, west of the Mississippi, from 

 Arctic Regions to Mexico (usually occupying this range to the 



' The presence of cheek pouches, supposed to remarkably distinguish 

 this animal, I have determined in all the species of Vespierimus examined. 

 It is an interesting question whether they also occur in South American 

 forms. 



