1880.] 



History of the Fossil Vertehrata of India. 



27 



Tertiaries : o£ Hippothcrium, there are two Siwalik species, H. antilopinum 

 and H. theobaldi* : remains of the genus have also been obtained from 

 Tibet. M. Gaudry remarksf that the Siwalik Hippotheria have no lateral 

 digits ; this may possibly be the case with II. antilopinum, but it is 

 certainly not so with the larger S. theobaldi, of which there is a nearly 

 comjilete tridactyle foot in the Indian Museum. H. theobaldi has not 

 yet been fully described ; it is very like 11. gracile, to which species some 

 Siwalik molars were referred by H. von MeyerJ under the name of Fqims 

 primiijenius. 



Of the artiodactyle modification of the Ungulata, there is a still longer 

 list in the Indian Mio- Pliocene. In the bunodont sub-division, we have 

 Ilippopotamus represented by two species (H, iravadicus and H. sivalen- 

 sis), both belonging to the hexaprotodont sub-genus. A Siwalik bunodont 

 (Tetraconodon magnum)^ is noticeable for its enormous conical premolars ; 

 this genus is probably related to Entclodon (Elotherium) of the Ter- 

 tiaries of Europe and America. The true pigs {Sus") are represented by 

 three species, S. giganteus, S. hysudricus, and S. punjabiensis ; the two 

 former were named by Falconer and Cautley, while the last name was applied 

 by myself. II Sanitherimn is a small suine animal, only known by the lower 

 molars. Hippohyus is a genus of suine animals whose molars jsresent a pecu- 

 liar complexity of pattern, recalling that of the molars of the horse ; the 

 genus is peculiar to the Siwaliks, where it appears to have been repre- 

 sented by two species.^ The European Miocene genus Hyotherium is 

 represented in the Tertiaries of Sind and Perim Island by a species which I 

 have jDrovisionally named S. sindiense.** Of the suine animals with sele- 

 nodont teeth, we have, among the forms with five cusjis on the molars, a 

 species of Anthracotherium (A. silistrense)\-\ from Sind, the Punjab, and 

 Sylhet, and a species of Eyopotamns (H. sindiense) IX from Sind: among the 

 forms characterized by having only four cusps on the molars, we have four 

 genera, Merycopotamus, Ghceromeryx, Hemimeryx, and Sivameryx,§§ all 

 peculiar to the Sind and Punjab Siwaliks, and each known only by a single 

 species :|| || the two last genera are at present undescribed. 



* Milk-molars of this species were at fli'st referred to a new genus, Sivalhippus, 

 by myself (11. G. S. I. vol. X. pp. 31. 82). 



f " Animaux Fossilos and Geologie de I'Attique" p. 231. 

 J Palaaontograpliica, Vol. XV, p. 17. 

 § Pal. Ind. Ser. X, Vol. I, 



II R. G. S. I. Vol. XI, p. 81. A suine animal has been named by myself HijipO' 

 potamodon, but I am now not certain of its generic distinctness, 

 f Ibid, p 82. ** Ibid p. 77. 



ft Ibid. p. 78, a jaw of this species was described by me as A. punjahicnse. 

 XX Ibid Vol. X, p. 77. Ibid. Vol. XI, pp. 78, 80. 



II II Falconer in a MS. note described some teeth of Dorcatherium, under the namo 

 ot Merycopotamtts nanus. (Pal. Ind. Scr. X, Vol. I.) 



