EOHIPPUS—EOMORPHIPPUS. 263 
Eohippus Mansu, 1876. Ungulata, Perissodactyla, Equide. 
Am. Journ. Sci. & Arts, 3d ser., XII, 401-402, Nov., 1876; Hay, Cat. Foss. Vert. 
N. Am., Bull. 179, U. S. Geol. Surv. 608, 1902 (type fixed). 
Species: Eohippus validus Marsh (type), from the lowest Eocene Coryphodon beds 
of New Mexico; and FE. pernix Marsh, from the Coryphodon beds of Wyoming. 
Extinet. 
Eohippus: 76s, dawn; Zzzos, horse—i. e., an Eocene horse. 
Eohyrax AmEGHINO, 1901. Ungulata, Hyracoidea, Archzeohyracide. 
Bol. Acad. Nac. Cien. Córdoba, XVI, 363, July, 1901 (sep. p. 17). 
Species: Eohyrax rusticus Ameghino, and EF. strangulatus Ameghino, from the 
‘Cretaceous’ of Patagonia. 
Extinct. 
Eohyrax: 7s, dawn; J- Hyrax—i. e., an Eocene Hyrax: ‘“‘cegenre . . . c’est la 
souche des Archaeohyracidés." (AMEGHINO. ) 
Eohyus Mansu 1894. Ungulata, Condylarthra, Phenacodontide. 
[Am. Journ. Sci., 3d ser., XIV, 362, Nov., 1877 (nomen nudum); Proc. Am. 
Assoc. Adv. Sci., XXVI (for Aug., 1877), 240, 1878 (sep. p. 36—nomen nudum ]. 
Am. Journ. Sci., 3d ser., XLVIII, 259-260, fig. 1, Sept., 1894; MarrHEw, Bull. 
Ames SNAU Elst. Ne Yeu Xe 92, 1899: 
Type: olus distans Marsh (1894), from the Eocene (Coryphodon beds) of New 
Mexico. 
Extinet. Based on a last upper molar. 
Eohyus: nos, dawn; vs, 60s, hog—i. e., an Eocene hog. 
Eolicaphrium AmeEGHINO, 1902. Ungulata, Litopterna, Proterotheriide. 
Bol. Acad. Nac. Cien., Cordoba, X VII, 18, May, 1902 (sep. p. 11). 
Type: Kolicaphrium primarium Ameghino, from the upper Notostylops beds of 
Patagonia. 
Extinct. 
KEolicaphrium: 96$, dawn; +- Licaphrium—i. e., an Eocene Licaphriwn. 
Eomannodon AmeEGHINO, 1902. Allotheria, Plagiaulacid:e ( Neoplagiaulacidz). 
[Anal. Soc. Cien. Argentina, LI, 77, Mar.-Apr., 1901—nomen nudum]; 
Bol. Acad. Nac. Cien. Córdoba, XVII, 119, May, 1902 (sep. p. 51). 
Type: HKomannodon multituberculatus Ameghino, from the Eocene (Patagonian 
beds) of Patagonia. 
Extinct. Based on the posterior part of the right mandible. 
Eomannodon: 76$, dawn; + Mannodon—i. e., an Eocene Mannodon. 
Eomeryx MamsH, 1894. Ungulata, Artiodactyla, Agriochceridee. 
[Am. Journ. Sci., 3d ser., XIV, 364, 365, Nov., 1877 (nomen nudem); Proc. 
Am. Assoc. Adv. Sci., XXVI (for Aug., 1877), 242, 243, 1878 (nomen nudum) J. 
Am. Journ Sci., 3d ser., XLVIII, 266-267, fig. 18, Sept., 1894. 
Type: Agriocherus pumilus Marsh (1875), from the Eocene of the Uinta Basin, 
Utah. 
Extinct. 
Eomeryx: nes, dawn; oypvé, a ruminant—i. e., an Eocene ruminant. 
Eomorphippus Amecuino, 1901. Ungulata, Litopterna, Notohippidee. 
Bol. Acad. Nac. Cien., Córdoba, XVI, 373-374, July, 1901 (sep. pp. 27-28). 
Species: HKomorphippus obscurus Ameghino, and E. rutilatus Ameghino, from the 
‘Cretaceous’ of Patagonia. 
Extinct. 
Eomorphippus: 7s, dawn; +- Morphippus—i. e., a primitive Morphippus. 
