626 MONOGRAPHS OF NORTH AMERICAN RODENTIA. 
THOMOMYS TALPOIDES BULBIVORUS, (Rich.) Coues. 
Pacific Pocket Gopher. 
Diplostoma? bulbivorum, Ricu., F. B. A. i, 1829, 206, pl. 18 B (lettered douglasti by mistake).—Ricu., Zool, 
Voy. Blossom, 1839, pp. 9 and 13*. 
Geomys bulbivorus, Ricu., Ann. Rep. Brit. Assoc. for 1836, vi, 1837, 150.—DrEKay, N. Y. Fn. 1842, 92. 
(Compiled from Richardson.)—Scnrxz, Syn. Mamm. ii, 1845, 185. (Compiled; quotes D. 
“ bulbiferum” ; gives wrong locality.)—LECOnTE, Proc. Acad. Nat. Sci. Phila, 1852, 162. (Com- 
piled from Richardson.) 
Ascomys bulbivorus, WAGN., Suppl. Schreb. iii, 1843, 387. (Compiled.) 
Pseudostoma bulbivorum, AuD. & Bacu., Q. N. A. iii, 1854, 337. (Compiled from Richardson.) 
Geomys (Thomomys) bulbivorus, GreB., Siiug. 1855, 530. (Compiled from Richardson.) 
Tomomys bulbivorus, BRANDT, Beit. Kennt. Siiug. Russl. 1855, 188, pl. 5, ff. 1-9 (skull and teeth). 
Thomomys bulbivorus, Barrp, M. N. A. 1857, 389, pl. 50, f.3 a-g, and pl. 52, f. 1 a-g. (Identifies the com- 
mon Californian animal with this species of Richardson’s, and minutely describes it.)— 
Barrp, P. R. R. Rep. x, 1859, Williamson’s Route, Mamm. 82. (Fort Tejon, Cal.)—Ken- 
NERLY, P. R. R. Rep. x, 1859, Whipple’s Route, Mamm. 13, pl. 11. (California.)—Grrr., 
Cat. Bones Brit. Mus. 1862, 223. (California. ) 
Thomomys talpoides bulbivorus, Cours, Proc. Acad. Phila. 1875, 136.—CovurEs, Powell’s Rep. Colorado R. 
1875, 258 (monograph). 
Oryctomys (Saccophorus) bottea, Eyp. & GERV., Mag. de Zool. vi, 1836, 23, pl. 21, f. 4 (teeth) ; Voy. Favorite 
v, 1839, 23, pl. 8, f. 4 (same). 
Thomomys botta, Lress., Nouv. Man. R. Anim. 1842, 119. (Compiled.)—Barrp, Proc. Acad. Nat. Sci. Phila. 
1855, 335. (Subsequently identified the same with bulbivorus.) 
Geomys fuliginosus, SCHINZ, Syn. Mamm. ii, 1845, 136. (Based on douglasi ; name altered for no good 
reason.) 
Thomomys laticeps, BAIRD, Proc. Acad. Nat. Sci. Phila. 1855, 335; M. N. A. 1857, 392. (Humboldt Bay. )— 
Kenn., P. R. R. Rep. x, 1859, Whipple’s Route, Mamm. 13, pl. 12, f. 1 (by error marked “2” 
in text). (Same as the foregoing.) 
Geomys douglasii, Ricu., F. B, A.i, 1829, 200, pl. 18 C, ff. 1-6 (skull); Zod]. Voy. Blossom, 1839, 9. (Near 
mouth of Columbia; Fort Vancouver.)—Ricu., Ann. Rep. Brit. Assoc. for 1836, vi, 1837, 
150.—LEConrTE, Proe. Acad, Nat. Sci. Phila. 1852, 162. (Compiled from Richardson.) 
Geomys douglasi, DiKay, N.Y. Fn. 1842, 92. (Compiled from Richardson. ) 
Ascomys douglasii, WAGN., Suppl. Schreb. iii, 1843, 392. (Compiled.) 
Pseudostoma douglasii, AUD. & Bacu., Q. N. A. iii, 1853, 24, pl. 105 (altogether too brightly colored). (Mainly 
compiled from Richardson. ) 
Geomys (Thomomys) douglasi, GYEBEL, Siiug. 1855, 531. (Compiled.) 
Thomomys douglassti, BAiRD, M.N. A. 1857, 394. (Minute description of specimens from Washington and 
Oregon Territories.)—SucKL., P. R. R. Rep. xii, 1860, pt. ii, pp. 100, 126. 
VARIETAL CHARS.—Coloration heavier than in the foregoing ; general cast 
reddish-brown, lined with dusky on the back; the head usually darker than 
the rest of the upper parts; on the sides, the color giving way to a clearer 
tawny-brown, which occupies the belly also, there overlying the plumbeous 
roots of the fur as a strong wash. Face and mouth-parts dusky, or even 
sooty-blackish, contrasting with the white lining of the pouches. No pure 
white on the under parts. Tail and feet usually incompletely whitish, or 
quite dusky. If anything, averaging rather larger than true ta/poides. Wand 
rather shorter than the foot, owing to less development of the claws, which 
are only about 0.40 long. 
