PART III: UNGULATA, PERISSODACTYLA. 937 
GENERA AND SUBGENERA. 
Name, authority, and date. Type or included species, and localities. 
Acoessus CoPE, 1881....... e Hyracotherium siderolithicum, Mauremont,Switz- 
erland. 
Anchilophus GERvAIS, 1848-52 ...... Anchilophus desmarestii, near Paris, France. 
PANCHIPNUSMEIRID. 808-5 e.c Anchippus texanus, Washington County, Texas. 
Anchitherium MxvzRn, 1844 ......... Anchitherium ezquerre, Cerro de San Isidro, 
Madrid, Spain. 
A imussE;EISCHo D ee ese. ose ee = “Der Esel, Asia. 
Caballus RaFINESQUE, 1815 ......... New name for Equus Linneeus, 1758. 
DESMAvIDDUSISCOLT, 893s. ee - Desmatippus crenidens, Deep River Valley, Mont. 
Ho Muppus NCARSH, 187072. 12. --45-- Eohippus validus (type), New Mexico; E. per- 
nir, Wyoming. 
Epihippus Mansng, 1877 ..-...:..... ? Epihippus wintensis, E. gracilis (type), Utah. 
Equus) Linnmus, 1758 .-------2---2- Equus caballus (type), Eurasia; EH. asinus, Asia; 
KE. zebra, Africa. 
Helohippus MaAnsH, 1892 ........... Lophiodon pumilus, Marsh Fork, Wyoming. 
** Hipparion Curistou, 1882?" ....... ? Equus gracilis, Europe. 
Hipparitherium Cnumisror, 1847 ..... Palxotherium hippoides, France. 
** Hipphaplous AMEGHINO, 1885" .... Hipphaplous bravardii, H. darwinii, Argentina. 
Hippidion OwEn, 1869 ............. Equus neogeus (type), JE. principalis, Brazil; 
KE. arcidens, Uruguay. 
Hippodactylus Corr, 1888 .......... Hippotherium antelopinum, Siwalik Hills, India. 
EHippodon: Lgipy, 1854.-.-.......... Hippodon speciosus, Bijou Hills, South Dakota. 
2 Euppops MARSH; 1892. : 5.22. = 3. ** Oldest ancestor of the horse, as yet undiscov- 
ered.”’ 
SEI POS GRAY, 18692-.----2. 52 eet Nomen nudum. 
Hippotherium Kavp, 1833 .......... Equus gracilis, E. nanus, Eppelsheim, Germany. 
Hippotigris H. SwrrH, 1841 ......... Equus zebra (type), Hippotigris antiquorum, 
Equus burchelli, Hippotigris quacha, H. isabel- 
linus, Africa. 
Hypohippus Lerpy, 1858............ Anchitherium affinis, Niobrara River, Nebr. 
? Hyracotherhyus LEMOIN®, 1880. - - - - Hyracotherhyus dichobunoides (1891), Reims, 
France. 
Hyracotherium OWEN, 1840 ......... Hyracotherium leporinum, estuary of the Thames, 
England. | 
Lophiotherium Gervais, 1849 ....... Lophiotherium cervulum, Alais, France. 
Merychuppus Erpy, 1857 ---2---—---- Merychippus insignis, Bijou Hills, South Dakota. 
Mesohippus Marsu, 1875 ........... Anchitherium bairdi, South Dakota. 
Miohippus Marsu, 1874 ............ Miohippus annectens, Oregon. 
Neohipparion Giwiey, 1905......... Neohipparion whitneyi, Little White River, South 
Dakota. 
jGigotomus Corr, 1873 .--.-.-..-.- Oligotomus cinctus, Cottonwood Creek, Wyo. 
Onohippidium Moreno, 1891........ Onohippidium munizi, La Loberia, Province of 
Buenos Aires, Argentina. 
Orohippus MarsH, 1872 ............ Orohippus pumilus, Grizzly Buttes, Wyoming. 
T Orotherium Marsu, 1872.......--- Orotherium uintanum, Henry Fork, Wyoming. 
Pachynolophus PowEgr, 1847......... Lophiodon | duvalii, L. parvulum, .L. wismei, 
France. 
Porahippus Lemmy, 1858.---.--.--.- Anchitherium cognatus, Niobrara River, Nebr. 
Pliohippus MAnsH, 1874 ............ Pliohippus pernix (type), P. robustus, Niobrara 
River, Nebraska. 
Pliolophus OwEN, 1858 ............. Pliolophus vulpiceps, Harwich, England. 
