844 INDEX GENERUM MAMMALIUM. 
Hyracodon Tomes, 1863. Marsupialia, Epanorthid:e. 
Proc. Zool. Soe. London, 1863, 50-51, pl. vrir. 
Type: Hyracodon fuliginosus Tomes, from Ecuador, 
Name preoccupied by Hyracodon Leidy, 1856, a genus of extinct Ungulata. 
Replaced by Ctenolestes Thomas, 1895. 
Hyracodon Fiunuor, 1876. Ungulata, Artiodactyla, Anoplotheriid:e. 
Comptes Rendus, Paris, LX XXII, No. 4, pp. 288-289, séance du 24 Jan., 1876. 
Emendation of Hyrocodon Filhol, 1873. Type, Hyracodon prüinzvus Filhol, from 
the Phosphorites of Quercy, near Caylux, Dépt. Tarn-et-Garonne, France. 
Hyracodontherium FiLHor, 1877. Ungulata, Artiodactyla, Anoplotheriid:e. 
Ann. Sci. Géol, Paris, VIII, art. No. 1, pp. 153-156 [pl. 13, figs. 283-284— 
‘Hyracodow ], 1877. 
Hyracodontotherium LYDEKKER, Proc. Zool. Soc. London, 1889, 67-69, 2 figs. in 
text; Nicholson & Lydekker's Man. Paleont., IT, 1382, 1889; Flower & Lydek- 
ker's Mamm. Living & Extinct, 439, 1891. 
New name for /[yracodon Filhol, 1876, which is preoccupied by Hyracodon 
Leidy, 1856, a genus of Perissodactyla; and by Hyracodon Tomes, 1863, a 
genus of Marsupialia. 
Extinct. Based on an upper jaw. 
Hyracodontherium: Hyracodon; 6nptor, wild beast. 
Hyracops Mansu, 1892. Ungulata, Condylarthra, Meniscotheriid:ze. 
Am. Journ. Sci. & Arts, 3d ser., XLIII, 445-448, text figs. 1, 2, May, 1892. 
Type: Jyracops socialis Marsh, from the Lower Eocene of New Mexico. 
Extinct. 
Hyracops: Hyrax; 6b, aspect. 
Hyracotherhyus LrworwE, 1880. Ungulata, Perissodactyla, Equidee? 
Ass. Franc. Avane. Sci., Compte Rendu 8° sess., Montpellier, for 1879, 590, 1880; 
Recherches Oiseaux Toss. Reims, II, 78, 1881 (4. dichobunoides—nomen 
nudum); Bull. Soc. Géol. de France, 3° sér., XIX, for 1890-91, 266, 286, pl. x1, 
fig. 121, May, 1891. 
Type (species not mentioned in first reference): Hyracotherhyus dichobunoides 
Lemoine (1891), from the Lower Eocene in the vicinity of Reims, France. 
Extinct. Based on a lower molar. 
Hiyracotherhagus:: Hyracotheriwm; Uc, ds, hog. 
Hyracotherium Owen, 1840. Ungulata, Perissodactyla, Equidze. 
Proc. Geol. Soc. London, ITI, for 1838-42, No. 66, pp. 162-163, Dec., 1839-Jan., 1840; 
Trans. Geol. Soc. London, 2d ser., VI, pt. 1, pp. 203-206, pl. 21, figs. 1-4, 1841. 
Type: Hyracotheriwum leporinum Owen, from the Eocene London Clay of Studd 
Hill, at the estuary of the Thames, about 1 mile west of Herne Bay, England. 
Extinct. Based on ‘‘asmall mutilated cranium, about the size of that of a hare, 
containing the molar teeth of the upper jaw nearly perfect, and the sockets 
of the canines.”’ 

Hyracotherium: pat, bpakos, shrew mouse, hyrax; §ypior, wild beast. 
Hyrax Hermann, 1788. Ungulata, Hyracoidea, Procaviidie. 
Tabula Affinitatum Anim., 115, 1783; GwELIN, Linn. Syst. Nature, ed. xri, 
166-167, 1788; FLowrr & LvpEkkEn, Mamm. Living & Extinct, 417-418, fig. 
176, 1891. 
Type: Cavia capensis Pallas, from the Cape of Good Hope, South Africa. 
Hyrax: 0pa&, mouse, shrew mouse. 
Hyrocodon FiLHor, 1873. Ungulata Artiodactyla, Anoplotheriide. 
Bull. Soc. Philomathique, Paris, 6° sér., X, 88, July—Dec., 1873. 
Hyracodon FirnoL, Comptes Rendus, Paris, LX XXII, No. 4, pp. 288-289, séance 
du 24 Jan. 1876. 
Type: LHyrocodon primxvus Filhol, from the Querey Phosphorites of Saint- 
Antonin, near Caylux, Dépt. Tarn-et-Garonne, France. 
