480 INDEX GENERUM MAMMALIUM. 
Oreomys (Avwanp) TROUESSART, 1881. Glires, H ystricidze. 
'TRovEssART, Cat. Mamm. Viv. et Foss., Rodentia, fasc. 2, p. 106, 1881. 
Misprint for Orenomys Aymard, 1855, which led Trouessart to suppose that 
Aymard's name was preoccupied and in need of a new name. 
Oreopithecus Gervais, 1872. Primates, Cercopithecidee. 
Comptes Rendus, Paris, LX XIV, 1217-1223, Jan.-June, 1872; Coccut, Boll. R. 
Comitato Geol. d’ Italia, Firenze, III, Nos. 3-4, pp. 64-68, tav. 1, figs. 1-2, 
Mar.—Apr., 1872. 
Type: Oreopithecus bambolii Gervais, from the Miocene lignites of Monte Bam- 
boli, near Livorno, Tuscany, Italy. 
Extinct. Based on a jaw. 
Oreopithecus: opos, Opeos, mountain; zí65«os, a long-tailed monkey. 
Oreotragus A. SurrH, 1834. Ungulata, Artiodactyla, Bovidze. 
[^H. Smrru,’* Aaassiz, Nomenclator Zool., Mamm., 23, 1842. ] 
** A. SurrH, S. African Quart. Journ., II, 212, 1834" (fide ScLater & THOMAS, 
Book of Antelopes, II, pt. v, 3-11, pl. xxv, Feb., 1896). 
Oritragus GroaER, Hand- u. Hilfsbuch Naturgesch., I, pp. xxxiii, 154, 1841; 
Tomas, Ann. & Mag. Nat. Hist., 6th ser., XV, 191, 193, Feb. 1, 1895. 
Type: Oreotragus saltator ( Boddaert, 1785 ) — Antilope oreotragus Zimmermann, 
1783, from South Africa. 
Oreotragus: Opos, mountain; rp«y OS, goat 

in allusion to its habitat in moun- 
tainous and rocky districts. 
Orias (‘Drsmarest’) LypEKKER, 1894. Ungulata, Artiodactyla, Bovidee. 
LypEKKER, Royal Nat. Hist., II, 267-273, 1894; Geog. Hist. Mamm., 247, 1896. 
Emendation of Oreas Desmarest, 1822. **'The name is usually spelt Oreas, but as 
itis derived from ópe:«z, the proper orthography is Orias." (1. c., 1896.) 
Orias: 6peics, an Oread, a mountain nymph. 
Oritragus Grocer, 1841. Ungulata, Artiodactyla, Bovidee. 
Hand- u. Hilfsbuch Naturgesch., I, pp. xxxiii, 154, 1841; THomas, Ann. & Mag. 
Nat. Hist., 6th ser., XV, 191, 193, Feb. 1, 1895; SctATER & THomas, Book, of 
Antelopes, II, pt. v, 5, Feb., 1896 (in synonymy). 
Species: South African antelopes ‘‘ with straight, pointed horns, which the Dutch 
call * Klippspringer. " Type, Oritragus oreotragus Thomas. 
Oritragus: opeios, of the mountains; rp«&y os, goat. 
Ormenalurus JourDAN, 1866. à; Fere, Felidee. 
‘Bull. Acad. Sci., Belles-Lettres et Arts de Lyon, 1866" (fide Grrvats, Bull. 
Soc. Géol. de France, 2° sér., XXVIII, 300, 1871); Journ. de Zool., I, 256 1872. 
Type: Ormenalurus gracilis Jourdan, from France. 
Extinct. 
Ormenalurus: Óóputvoc, stem; aidoupos, cat. 
Ornithorhynchus Biumensacn, 1800. Monotremata, Ornithorhynchid:e. 
Gottingische Gelehrte Anzeigen, I, 609-610, Apr. 19, 1800; Voigt's Magazin 
Naturkunde, II, 205-214, 1800; Abbild. Naturhist. Gegenstünde, 5tes Heft, 
Nr. 41, pl. with 2 pp. text, 1800. 
Ornithorinchus RAFINESQUE, Analyse de la Nature, 57, 1815. 
Ornithorhyncus CuvrER, Dict. Sci. Nat., LIX, 503, 1829. 
Type: Ornithorhynchus paradoxus Blamenbach, from Botany Bay, New South 
Wales. 
Ornithorhynchus: Ópvis, bird; AUyyos, snout, bill—in allusion to the duck-like 
bill. 
Orochilus (see Prochilus). Fer, Urside. 

*H. Smith, in Griffith’s Cuvier, Animal Kingdom, 1827, gives only *Oreotragine 
group’ (IV, p. 245), and Antilope oreotragus (V, p. 340). 
