926 INDEX GENERUM MAMMALIUM. 
GENERA AND SUBGENERA. 
Name, authority, and date. Type or included species, and localities. 
Alcicephalus RopLeR & WerrHorer, Alcicephalus neumayri, A. coelophrys, Maragha, 
1890. Persia. 
Bramatherium FALCONER, 1845...... Bramatherium perimense, Perim Island, India. 
Camelopardalis SCHREBER, 1784 ..... Camelopardalis giraffa (= Cervus camelopardalis), 
Africa. (See Giraffa.) 
Giraffa BRISSON; 0209 e ees Giraffa giraffa ( — Cervus camelopardalis), Africa. 
Helladotheriwim G&^vpRv, 1860. ...... Helladotherium duvernoyi, Pikermi, Greece. 
Hydaspidotherium LYDEKKER, 1876... Hydaspidotherium megacephalum, India. 
Libytherium PowxEr, 1892 ........... Libytherium maurusium, St. Charles, Algeria. 
Okapia @ LANKESTER, 1901.......... Equus? johnstoni, Semliki River, Kongo, Africa. 
Orasius! GO EENDMIGIOS eec ME cS Cervus eamelopardalis, Africa. (See Giraffa.) 
Ovifora HRISCH eli/0 NER Cervus camelopardalis, Africa. (See Giraffa. ) 
Palxotragoceros LYDEKKER, 1891.... Lapsus for Palxotragus Gaudry, 1861. 
Palzotragus Gaupry, 1861 ......... Palxotragus rouenii, Pikermi, Greece. 
Panotherium W AGNER, 1861 ........ Panotherium sp., Pikermi, Greece. 
Samotherium Forsyth Mazon, 1889 . Samotherium boissieri, Samos, Asia Minor. 
Sivatherium CavrLEY & FArc., 1885... Sivatherium giganteum, Siwalik Hills, India. 
Thaumatherium GroGER, 1841 ...... New name for the ‘ill-chosen’ Sivatherium. 
Trachelotherium GisrEL, 1848....... New name for Camelopardalis Schreber, 1784. 
(See Giraffa. ) 
Uriniatherium RopLER, 1888 ........ Urmiatherium polaki, Uditschi, Persia. 
Vishnutherium LYDEKKER, 1876..... Vishnutherium iravadicum, Burma. 
HELOHYIDZE. 
Helohyidx M nsn, 1877. 
GENERA AND SUBGENERA. 
Name, authority, and date. Type or included species, and localities. 
Helohyus Marsu, 1872 -............ Helohyus plicodon, near Fort Bridger, Wyoming. 
T Thinotherium Marsy, 1872 ........ Thinotherium validum, Henry Fork, Wyoming. 
HIPPOPOTAMIDZE. 
Choeropsinae GILL, 1872. Hippopotamide Gray, 1821. 
GENERA AND SUBGENERA. 
Name, authority, and date. Type or included species, and locatities. 
T Choerodes UEipy,1S8o2me ce Hippopotamus liberiensis, St. Paul River, Liberia. 
(See Choropsis and Ditomeodon. ) 
T Cheropotamus Brepparp, 1895 ..... Lapsus for Charopsis ^ Leidy, 1852. 
Onoropsis Gntpys, l859499 52m eee New name for Cherodes Leidy, 1852. 
**Cynos E. L. Grorrroy, 1767" ..... Cynos sp. — Hippopotamus (fide Sherborn). 
T Diprotodon Duvernoy, 1849 ....... Hippopotamus liberiensis, St. Paul River, Liberia. 
Ditomeodon GRATIOLET, 1869........ New name for Cherodes Leidy. (See Cheropsis. ) 
Hexaprotodon FALcoxER & CavrLEv, Hippopotamus sivalensis, H. dissimilis, Siwalik 
1836. Hills, India. 
 Hippopotamodon LYDEKKER, 1877... Hippopotamodon sivalense, Siwalik Hills, India. 
Hippopotamus Linn mus, 1758 ....... Hippopotamus amphibius (type), Nile; H. ter- 
restris, Brazil. 
Hippotamus RAFINESQUE, 1815 ...... New name for Hippopotamus Linneeus, 1758. 
Hyopotamus Kaur, 1844............ Hippopotamus minutus, Paris Basin, France. 
+ Potamotherium GroakERn, 1841...... Hippopotamus sivalensis, Siwalik Hills, India. 
Tetraprotodon Fatconer & CavrLEv, Hippopotamus amphibius, Nile; H. antiquus, H. 
1836. minor, H. medius, H. minimus, Europe. 

* Ocapia LANKESTER, 1901. 
bP'*'The small Liberian hippopotamus has been placed in a distinct genus, Chero- 
potamus." (Brpparp, Text-book Zoogeog., p. 100, 1895.) 
