586 INDEX GENERUM MAMMALIUM. 
Prototapirus Ponuric, 1888. Ungulata, i 
Nova Acta Acad. Cws. Leop.-Caro! , LIII, Nr. 1, p. 257, 1888 (nomen nudum). 
Hypothetical genus, perhaps Cretaceous, supposed to be the common ancestor of 
the Ungulata and Sirenia. 
Prototapirus: mp@ros, first; + Tapirus. 
Prototherium Zicno, 1887. Sirenia, Halitheriid:ze. 
Bull. Soe. Géol. de France, 3° sér., XV, No: 8, p. 731, pl. xxvii fig. 1, Dec., 1887. 
Type: Halitherium veronense Zigno, from the Eocene of Mont Zuello, near Ronca, 
Verona, Italy. 
Extinct. 
Prototherium: z ros, first; Oypiov, wild beast. 
Prototomus Copr, 1874. Creodonta, Proviverridze. 
Rept. Vert. Fossils New Mexico, 13-14, Nov. 28, 1874; Ann. Rept. Chief of 
Engineers, U. 8. A., App. F F 3, pp. 601-602, 1874; Hav, Cat. Foss. Vert. N. 
Am., Bull. 179, U. S. Geol. Surv., 751, 1902 (type fixed). 
Species, 3: Prototomus viverrinus Cope (type), P. insidiosus Cope, and P. jarrovü 
Cope, from the Eocene of New Mexico. 
Extinct. 
Name preoccupied by Prototoma Heer, 1852, a genus of Coleoptera. 
Prototomus: 2p@vos, first; rouós, cutting—probably in allusion to the slight 
sectional edge of the posterior tubercle of the first and second upper molars. 
Protoxerus (subgenus of Yerus) ForsyraH Masor, 1893. Glires, Sciuridee. 
Proc. Zool. Soc. London, June 1, 1893, 189, pls. vir figs. 7-8, 1x figs. 7-8; TRovEs- 
SsART, Cat. Mamm., new ed., fasc. 11, 403—404, 1897; THomas, Proc. Zool. Soc. 
London, 1897, 933 (type fixed). 
Species, 3: Sciurus stangeri Waterhouse (type), S. ebii Temminck, and S. aubinnii 
Gray, from West Africa. 
Protoxerus: mp@ros, first; + Xerus. 
Protoxodon AMEGHINO, 1887. Ungulata, Toxodontia, Nesodontidee. 
Obs. Gen. sobre Mamif. Estinguidos llamados Toxodontes, 62, May, 1887. 
Type: Toxodon patagonensis Moreno, from the barrancas of the Rio Santa Cruz 
(above the middle of its course), southern Patagonia. 
Extinct. Based on two or three molars. 
Protoxodon: T0, before; + Toxodon. 
Protragelaphus Dawrs, 1883. Ungulata, Artiodactyla, Bovid:e. 
Sitzungs-Ber. Gesellsch. Naturforsch. Freunde Berlin, Nr. 6, pp. 97-97 (Sitzung 
June 19), 1883. 
Type: Protragelaphus skouzesi Dames, from the Pliocene, Pikermi beds, of Greece. 
Extinct. 
Protragelaphus: po, before; —+- Tragelaphus. 
Protragocerus DrrÉnET, 1887. Ungulata, Artiodactyla, Bovide. 
Comptes Rendus, Paris, CIV, No. 6, p. 381, Jan.-June, 1887; Bull. Soc. Géol. 
de France, 3° sér., XV, No. 6, pp. 509, 511, Oct., 1887. 
Protragoceros DEPÉRET, Archiv. Mus. Hist. Nat. Lyon, IV, 248-253, pl. xn, figs. 
2-9, 11, 12, 1887; ibid, '*V, 90, 1892;" NicHoLsoN & LyDEKKER, Man. 
Paleeont., II, 1348, 1889. 
Type: Protragocerus chantrei Depéret, from the Miocene of the valley of the 
Rhone, near Grive Saint-Alban (Isóére), France. 
Extinct. Based on numerous remains. 
Protragocerus: 2p06, before; + Tragoceros. 
Protroglodytes AMEGHINO, 1884. Primates, 5 
Filogenia, 384, 1884; Cont. Conocimiento Mamíf. Fósil. Repüb. Argentina, in 
Act. Acad. Nac. Cien., Córdoba, VI, 98-99, 1889. 
Hypothetical genus: ‘Antecesor del gorilla y el chimpancé.’ 
Protroglodytes: 00, before; +-Troglodytes. 
