96—30 INDIAN TERTIARY AND POST-TERTIARY VERTEBRATA. 
qua Sivalensis, ” there are represented the anterior extremities of the skull and 
mandible, and the lower milk-molar dentition of a fossil horse from the Narbada, 
under the name of Equus palceonus. As the corresponding parts of the skeleton 
of E. namadicus are not represented in the “ Fauna Antiqua Sivalensis ,” it is now 
impossible to understand what could have induced the authors of that work to separate 
these remains from E. namadicus. Until, therefore, any evidence which should 
lead to the adoption of a contrary view be produced, these remains are, following the 
suggestion of the late M. Lartet, referred to that species. The name of E. palceonus 
must consequently be abolished. The remains above noticed do not present any 
characters requiring special notice. 
Distribution. — Remains of E. namadicus have been obtained from the pleisto- 
cene beds of the Narbada, and if the above determinations be correct, from the 
topmost Siwaliks, in company with Bubalus palceindicus and Camelus sivalensis, 
in beds which are probably high up in the pliocene series, if, indeed, they also do 
not belong to the pleistocene. Remains of a fossil horse have been obtained from 
the older alluvium of the Jamna valley, very possibly belonging to the present 
species, though this cannot be certainly determined. 
If it should turn out that the identification of the second species of Siwalik 
horse with E. namadicus be incorrect, the former remains will have to be referred 
to a new species. 
List of the more important recent works and memoirs on the osteology and palaeon- 
tology of Equus and Hippotherium, consulted in this memoir. 
Baker, W. E. 
“ Selected specimens of the Sub-Himalayan Fossils in the Dadupur Collection.” 1 Fossil 
Horses/ ‘ Jour. As. Soe., Bengal/ Yol. IY, p. 566. 
Burmeister, H. 
“ Los caballos fossiles de la Painpa argentina.” Buenos Ayres. 1875. {Equus neogaus 
E. principalis, E. argentinus, and E. curvidens). 
Falconer, H. 
‘ Letter from — regarding Siwalik fossils/ c Jour. As. Soc., Bengal/ Vol. IV, p. 58 (Hip- 
potherium) . 
„ AND CaTJTLEY. 
“ Fauna Antiqua Sivalensis.” London, about 1846. 
„ and Walker.” 
“ Catalogue of Fossil Vertebrata in Museum, As. Soc., Bengal.” Calcutta, 1859. 
Forsyth — Major, J. C. 
“ Beitrage zur Geschicte der fossilen Pferde, inbesonclere italiens.” “ Aband. d. Schweiz, 
pal. Gesel.” Yols. IV. and VII. 
Georgi. 
‘ Etudes zoologiques sur les Hemiones et quelques autres especes chevaliues.” ‘ Ann. Sci. 
Nat/ Zoologie. Ser 5. Vol XII., p. 5, 1869. 
