(00 INDEX GENERUM MAMMALIUM. 
Uintatherium—Continued. 
Extinct. Based on ‘many fragments of a skeleton . . . including a whole 
humerus, portions of jaws, and a much crushed and distorted cranium.’ 
Uintatherium: Uinta, the Uinta Mountains; 67píov, wild beast—from the type 
locality. 
Ulias Corr, 1895. Cete, Baleenide. 
Proc. Am. Philos. Soc., XXXIV, No. 147, pp.141-143, pl. vr fig. 1, May 29, 1895; 
Am. Naturalist, X XIX, No. 342, p. 573, June 3, 1895. 
Type: Ulias moratus Cope, from the Yorktown (Middle) Neocene beds of Mary- 
land, Virginia, and North Carolina. 
Extinct. 
Ulias: obAov (pl. obAa), the gums; + suffix -ias, denoting possession—in allu- 
sion to the alveolar groove, which is continuous with the dental canal and per- 
manently open. ‘‘It is probable, then, that this genus possessed teeth during 
a longer period than the existing Balzenidze, and that they were retained in 
place by a gum so long that the canal could not close, as is the case in the 
latter." (Copr. ) 
Ultrapithecus AmeGcuino, 1901. Primates, Archzeopithecidee. 
Bol. Acad. Nac. Cien. Córdoba, XVI, 359-360, July, 1901 (sep. pp. 13-14). 
Species: Ultrapithecus rutilans Ameghino, and U. rusticulus Ameghino, from the 
‘Cretaceous’ of Patagonia. 
Extinct. 
Ultrapithecus: Lat. ultra, beyond; + Pithecus. 
Unaüs RariNEsQUE, 1815. Edentata, Bradypodid:e. 
Analyse de la Nature, 57, 1815; GRAv, London Med. Repos., XV, 305, Apr. 1, 
1821. ; 
Type: ‘Bradypus sp.,’ possibly Bradypus unau Link, from tropical America. 
Gray's genus has for type Bradypus didactylus Linnzeus, from Brazil. 
Unaiis: Unau, native name of the sloth on the Amazon, adopted by Buffon 
(Hist. Nat., XIII, p. 34, 1765). 
Uncia Gray, 1854. Fer, Felide. 
Ann. & Mag. Nat. Hist., 2d ser., XIV, 394, Nov., 1854; Srverrzow, Revue et Mag. 
de Zool. 2° sér., X, 387, 390, Sept., 1858; Gray, Proc. Zool. Soc. London, 
1867, 262, fig. 1; Cat. Carn., Pachyderm., & Edentate Mamm. Brit. Mus., 8-9, 
fig. 1, 1869. 
Species, 5: Felis irbis Ehrenberg ( — Felis uncia Schreber, type), from Tibet; F. 
inacroscelis Horsfield, from Sumatra; £F. macrosceloides Hodgson, from India; 
F. marmorata Martin, from Penang; and F. charltoni Gray, from India. 
Uncia: From the specific name of the type. 
Unicornus RariNEsqQUE, 1815. Ungulata, Perissodactyla, Rhinocerotid:e. 
Analyse de la Nature, Addendum, 219, 1815. 
New name for Monoceros Rafinesque, 1815 (Analyse, p. 56), which is preoecupied 
by Monoceros Meusch, 1787, a genus of Mollusca. 
Name preoccupied by Unicornus Montfort, 1810, a genus of Mollusca. (See 
Rhinoceros Linn:eus, 1758.) 
Unicornus: Lat. unicornuus, unicorn—in allusion to the single tusk or ‘horn’ of 
the male. 
Uperoodon (see Hyperoodon). Cete, Physeterid:e. 
Uphelognatos FrirLnor, 1888. Ungulata, Artiodactyla, Anoplotheriide. 
Bull. Soc. Philomathique, Paris, 7* sér., XII, No. 4, pp. 143-147, 1888. 
Uphelognathus LvpEKKER, Zool. Record for 1888, XXV, Mamm., p. 53, 1890. 
Type: Uphelognatos quercyi Filhol, from the Phosphorites of Quercy, France. 
Extinet. ‘‘Connu seulement par une portion de mandibule inférieure portant 
la quatriéme prémolaire et les trois molaires.’’ 
