COUES ON GEOMYS AND THOMOMYS G. BUKSAEIUS. 221 
GEOMYS BURSARIUS, (Shaw) Rich. 
Mua bursarius, SHAW, Liuu. Traus. v, 1800, 227, fig. 8; Gen. Zool. ii, 1801, 100, pi. 138 (the plate clearly 
shows the grooved incisors ; the pouches are everted). MITC., Am. Journ. Sci. iv, 1822, 183. 
Cricetits bursarius, DKSM., Nouv. Diet. d'Hist. Nat. xiv, , 177 ; Ency. M6th. Suppl. pi. 10, f. 4 ; Mumm. ii, 
1822, p. 312 (bursareus). F. Cuv., Diet. Sc. Nat. xx, , 257. DESMOUL., Diet. Class, viii, 
, 37. GRIFF., Anim. Kiugd.lti, 1827, 138, pi. ; v, 1827, 235, No. 612. 
Saccophorus bursarius, KUIIL, Beitriige, 1820, 65. Fiscu., Syuop. 1827, 304. 
Pseudostoma bursarius, SAY, Long's Exp. R. Mts. i, 1823, 406 (Ziwraaria). HARLAX, Fu. Amer. 1825, 153. 
LESS., Man. 1827, 259. GODMAX, Ani. Nat. Hist, ii, 1831, 90 (bursarium). DEKAY, N. Y. Fn. 
i, 1842, 92. Aun. & BACH., Q. N. A. i, 1849, 332, pi. 44. 
Gcomys! bursarius, RICH., F. B. A. i, 1829, 203 ; Rep. Brit. Assoc. for 1836, v, 1837, 156 (nee Gray). 
Ascomys bursarius, EYD. & GERV., Voy. Favorite, v, 1839, 23. SCHINZ, Syn. ii, 1845, 132. GIEB., Odon- 
tpg. 53, pi. 23, f. 8. 
Geomys bursarius, Woomi., Zu!ii and Col. R. 1853, 50. PARVIX, Anu. Rep. Smiths. Inst. for 1854, 1855, 
293 (habits). KEXX., Trans. Illinois Agric. Soc. for 1853-'4, 1855, 580. BD., M. N. A. 1857, 
372, pi. 22, fig. 1 a-h, and pi. 50, fig. 2 a-g. MAXIM./ Arch. Naturg. 1861, ; Verz. Reise 
N.-Am. Sang. 1862, 147. GERR., Cat. Bones Br. Mus. 1862, 223. LEIDY, Proc. Acad. Nat. Sci. 
Phila. 1867, 97 (sknll from loess of Missouri). AMES, Bull. Acad. Minnesota, i, 1874, 70. 
Geomys (Saccophorus) bursarius, GIEBEL, Siing. 1855, 529. 
" 1 Mus ludovicianus, ORI>, Gnthrie's Geog. 2d Am. ed. ii, 1815, 292. (Not determinable.)" 
? Diplostoma fusca, RAF., Am. Month. Mag. ii, 1817, 44. DESM., Mamm. ii, 1822, 315. LESS., Man. 1827, 261. 
? Diplostoma alba, RAF., Am. Month. Mag. ii, 1817, 44 ( albino). DESM., Mamm. ii, 1822, 315. LESS., Man. 
1827, 261. 
Saccophorus! albus, Fiscn., Synop. 1827, 305. 
? Geomys cinereus, RAF., Am. Month. Mag. ii, 1817, 45. 
Mus saccatus, MITCH., N. Y. Med. Rcpos. xxi, 1821, 249. 
Ascomys can&densis, LIGHT., Abh. Acad. Wiss. Berl. 1823, 13, fig. BKANTS, Muizen, 1827, 24. WAGX., 
Suppl. Schreb. iii, 1843, 383; Abh. K. Baier. Akad. Munch, xxii, 1846, 327, fig. (skeleton). 
Geomys canadensis, LEC., Proc. Acad. Nat. Sci. Phila. vi, 1852, 158. 
Geomys oregonensis, LEC., Proc. Acad. Nat. Sci. Phila. vi, 1852, 160 (no probability that the assigned local 
ity is correct). 
Geomys breviccps, BD., Proc. Acad. Nat. Sci. Phila. 1855, 334 ; M. N. A. 1857, 378, pi. 52, f . 2 a-g. GERR. 
Cat. Bones Br. Mus. 1862, 223. 
Canada Eat, SHAW, IL cc. 
Canada Pouched Eat, RICHARDSOX, I. c. AUD. & BACH., I. c. 
Hamster du Canada, DESM., I. c. 
Pseudostome a bourse, LESS., I. c. 
Diplostome brun, D. blanche, DESM., LESS., II. cc. 
Canadian Hamster, GRIFFITH, I. c. 
Gofftr, Taschenmaus, SCHIXZ, I. c. 
Pouched Eat, Sand Eat, Camas Eat, Pocket Goplier, Salamander, Valg. 
Gaufre, French (whence English "gopher," and German "goffer"). 
Quid Geomys drummondii, RICH., Rep. Brit. Assoc. v, 1837, 157 (Ascomys drummondii apud Wagn., Suppl. 
Schreb.), species indet. dentibus prim, bisulcatis ? 
DIAGNOSIS. Superior incisors bisulcate, with a fine sharp groove along 
the inner margin, and another much larger bisecting the remaining plane sur 
face. Cheek-pouches ample, extending to the shoulders. Hands (including 
claws) longer than feet. Tail and feet hairy. Pelage soft, sleek, mole-like. 
Color dull reddish-brown, muddy-gray or hoary beneath, the basal portion 
