689 INDEX GENERUM MAMMALIUM. 
Tomiopsis Corr, 1893.* Edentata, 1 
Proc. Am. Philos. Soc., XX XI, No. 142, pp. 317-318, Dec. 7, 1893; Hav, Cat. 
Foss. Vert. N. Am., Bull. 179, U. S. Geol. Surv., 581, 1902. 
Type: Tomiopsis ferruminatus Cope, from the Neocene (?) beds on Lapara Creek, 
western Texas. 
Extinct. Based on a tooth. 
Tomiopsis: rouía, a cutting, division; ovs, appearance. 
Tomitherium Corr, 1872. k Primates, Notharctidze. 
Paleont. Bull., No. 3, pp. 2-3, Aug. 7, 1872; Proc. Am. Philos. Soc., XII, for 
July-Dec., 1872, 470-471, Jan., 1873; Ann. Rept. U. 8. Geol. & Geog. Surv. 
Terr., for 1872, 546, 1873; Ossorn, Bull. Am. Mus. Nat. Hist., N. Y., XVI, 197, 
June 28, 1902. 
Type: Tomitherium rostratum Cope, from the Eocene in the vicinity of Blacks 
Fork of Green River, Wyoming. 
Extinct. 
Tomitherium: topos, cutting, sharp; §7ptov, wild beast—from the transverse cut- 
ting edges on the middle incisors. 
Tomodus AMEGHINO, 1886. Ungulata, Toxodontia, Toxodontide. 
Bol. Acad. Nac. Cien. Córdoba, IX, 111-112, 1886. 
Type: Tomodus elautus Ameghino, from the older Tertiary formations of Paraná, 
Argentina. 
Extinct. Based on a left lower incisor. 
Name preoccupied by Tomodus Trautschold, 1879, a genus of Pisces. Replaced 
by Eutomodus Ameghino, 1889. 
Tomodus: rojtóc, cutting, sharp; 6400's, tooth—in allusion to the lower incisors. 
Tomolabis Corr, 1892. Ungulata, Perissodactyla, Equide. 
Proc. Am. Philos. Soc., XXX, 125 footnote, Mar. 30, 1892; ibid., XX XIV, for 
1895, 466, Feb. 21, 1896. 
Type: Equus fraternus Leidy, 1889, from Florida (not E. fraternus Leidy, 1858, 
from Charleston, South Carolina). 
Tomolabis: rouós, cutting, sharp; Aafis, forceps, tongs—in allusion to *'the 
posterior wall of the cup of the incisor teeth [which] is extensively interrupted, 
so as to reduce the triturating surface to a single crescent." (CoPE.) 
Extinct. 
Tomomys (see Thomomys). Glires, Geomyid:e. 
Tomopeas Mirrzn, 1900. Chiroptera, Vespertilionide. 
Ann. & Mag. Nat. Hist., 7th ser., VI, 570-574, fig. in text, Dec., 1900. 
Type: Tomopeas ravus Miller, from Yayau, Cajamarca, Peru. 
Tomopeas: rou?) stamp; Oózeac, awl—‘stump awl,’ in allusion to the short, 
blunt tragus. 
Tonatia Gray, 1827. Chiroptera, Phyllostomatidee. 
Gray, in Griffith's Cuvier, Animal Kingdom, V, 71 footnote, 1827; BunNETT, 
Quart. Journ. Sci., Lit. & Art, XX VII, 269, Apr.-June, 1829; PArLwER, Proc. Biol. 
Soc. Wash., XII, 110, 111, Apr. 30, 1898 (name revived) ; ALLEN, ibid., XIV, 184, 
Dec. 12, 1901; THomas, Ann. & Mag. Nat. Hist., 7th ser., X, 53-54, July 1, 1902. 
Type: Vampyrus bidens Spix, from Brazil. 
** Vampyrus, it is understood, was long ago appropriated by M. Geoffroy (in a 
MS. communication to Dr. Leach) as a generic name to V. spectrum of Lin- 
neeus; but Spix, in his splendid work on the animals of Brazil, now publishing, 
has adopted it for three species there described, the Cirrhosus, Soricinus, and 
sidens. . .. Mr. Gray proposes . . . to divide the three species of Spix's 
genus Vampyrus above mentioned into two genera, the one under the name 
Istiophorus, including Cirrhosus and Soricinus, and the other under that of 
Tonatia including Bidens only." (Gray.) 

* Erroneously given as ‘1891’ by Trovessart, Cat. Mamm., new ed., fasc. v, 1154, 1898. 
