C26 MONOGRAPHS OF NORTH AMERICAN RODENTIA. 



THOMOMYS TALPOIDES BULBIVORUS, (Rich.) Coues. 



Paciflc Pocket Coplicr. 



DiplostomaT bulbivorum, Rich., F. B. A. i, 1829, 20G, pi. 18 B (lettered douglasii by mistake).— Rich., Zool. 

 Voy. Blossom, 1639, pp. 9 and 13*. 



Ocomys bulbivorus, ElCH., Ann. Eep. Brit. Assoc, for 1836, vi, 18:17, 150.— DbKat, N. Y. Fn. 1842, 92. 

 (Compiled from Richardson.) — Sciiisz, Syn. Mainin. ii, 1845, 135. (Compiled; quotes 1). 

 " bulbij'crum " ; gives wrong locality.) — LeConte, Proc. Acad. Nat. Sci. Phila. 1852, 162. (Com- 

 piled from Richardson.) 



Ascomys bulbivorus, Wagn., Suppl. Schreb. iii, 1843, 387. (Compiled.) 



1'seudostoma bulbivorum, Aud. & Bach., Q. N. A. iii, 1854, 337. (Compiled from Richardson.) 



Geotnys (Ihomomys) bulbivorus, Gieb., Siiug. 1855, 530. (Compiled from Richardson.) 



Tvmomys bulbivorus, Brandt, Beit. Kennt. Siiug. Russl. 1855, 188, pi. 5, tf. 1-9 (skull and teeth). 



Thomomys bulbivorus, Baird, M. N. A. 1857, 389, pi. 50, f. 3 a-g, and pi. 52, f. 1 a-g. (Identifies the com- 

 mon Californian animal with this species of Richardson's, and minutely describes it.) — 

 Baird, 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, pi. 11. (California.) — Gerr., 

 Cat. Bones Brit. Mas. 1862, 223. (California.) 



Thomomys talpoides bulbivorus, Coues, Proc. Acad. Phila. 1875, 136.— Coues, Powell's Rep. Colorado R. 

 1875, 258 (monograph). 



Oryctomys (Saccophorus) botlcr, Fyd & Gerv., Mag. dc Zool. vi, 1836, 23, pi. 21, f. 4 (teeth) ; Voy. Favorite 

 v, 1839, 23, pi. 8, f. 4 (same). 



Thomomys bottle, Less., Nouv. Man. R. Anim. 1842, 119. (Compiled.)— Baird, Proc. Acad. Nat. Sci. Phila. 

 1855, 335. (Subsequently identified the same with bulbivorus.) 



Oeomys fuligiiiosus, Schinz, Syn. Mamm. ii, 1845, 136. (Based on douglasi ; name altered for no good 

 reason.) 



Thomomys laticcps, Baird, Proc. Acad. Nat. Sci. Phila. 1855, 335 ; M. N. A. 1857, 392. (Humboldt Bay.)— 

 Kf.nn., P. R. R. Rep. x, 1859. Whipple's Route, Mamm. 13, pi. 12, f. 1 (by error marked " 2 " 

 in text). (Same as the foregoing.) 



Geomys douglasii, Rich., F. B. A. i, 1829, 200, pi. 18 C, ff. 1-6 (sknll) ; Zool. Voy. Blossom, 1839, 9. (Near 

 mouth of Columbia; Fort Vancouver.) — Rich., Ann. Rep. Brit. Assoc, for 1836, vi, 1837, 

 i:.0.— LeConte, Proc. Acad. Nat. Sci. Phila. 1852, 162. (Compiled from Richardson.) 



Geomys douglasi, DeKay, N. Y. Fn. 1842, 92. (Compiled from Richardson.) 



Ascomys douglasii, Wagn., Suppl. Schreb. iii, 1843, 392. (Compiled.) 



Pseudosloma douglasii, Aud & Bach., Q.N. A. iii, 1853, 24, pi. 105 (altogether too brightly colored). (Mainly 

 compiled from Richardson.) 



Geomys ( Tliomomys) douglasi, Giebel, Siiug. 1855, 531. (Compiled.) 



Thomomys douglassii, Baird, M. N. A. 1857, 394. (Minute description of specimens from Washington aud 

 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 aud mouth-parts dusky, or even 

 «sooty-blackish, contrasting with the white lining of the pouches. No pure 

 white on Ihe under parts. Tail and feet usually incompletely whitish, or 

 quite dusky. If anything, averaging rather larger than true talpoides. Hand 

 rather shorter than the foot, owing to less development of the claws, which 

 are only about 0.40 long. 



