HIPPOPOTAMUS. 297 



36832. The first dorsal vertebra ; from the Pleistocene of the Nar- 

 (Fig.) bada Valley. Figured by Falconer and Cantley, op. cit. 



pi. lviii. fig. 5. 



Presented by C. Fraser, Esq. Before 1843. 



36833. The last lumbar vertebra ; from the Pleistocene of the 

 {Pig.) J^arbada Yalley. Figured by Falconer and Cautley, op. 



cit. pi. lvii. fig. 9. 



Presented by C. Fraser, Esq. Before 1843. 



Hippopotamus sivalensis, Falconer and Cautley 1 . 



Syn. Hexaprotodon sivalensis, Falconer and Cautley 2 . 



This species is somewhat smaller than the existing H. ampJiibius, 

 and has three incisors in both jaws, those of the mandible being of 

 subequal size ; the groove in the upper canine is much deeper 

 than in H. ampliibius, and the mandibular symphysis relatively 

 longer. The species has been split up by McClelland 3 , but apparently 

 on insufficient grounds. 



Hab. India. 



All the following specimens, unless otherwise stated, are from the 

 Pliocene of the Siwalik Hills, and belong to the Cautley Col- 

 lection. Presented, 1842. 



M. 2269. The cranium, showing the alveoli of the incisors, the 

 (Fig.) canines, and the whole of the cheek-teeth, in a well-worn 

 condition. This specimen is figured by Falconer and 

 Cautley in the ' Fauna Antiqua Sivalensis,' pi. lix. fig. 1 : 

 and is also figured in ' Falconer's Palseontological Me- 

 moirs,' vol. i. pi. xi., as well as in the accompanying 

 woodcut (fig. 38, a, p. 298). It is noticed by the present 

 writer in the ' Palasontologia Indica,' ser. 10, vol. iii. 

 pp. 38, 39, as var. latidens. 



Presented by Gen. Sir W. E. Baker, K.C.B., 1848. 



16175. The cranium, showing all the dentition except the incisors. 



(Fig.) This specimen is figured by Falconer and Cautley, op. cit. 

 pi. lix. fig. 2, and is noticed by the present writer, loc. 

 cit. It agrees precisely with the last specimen, the den- 

 tition being in a well-worn condition. 



Presented by Dr. Hugh Falconer. 



1 Asiatic Researches, vol. xix. p. 40 (1836). 



2 Loc. cit. 



3 Journ. As. Soc. Beng. vol. vii. p. 1038 (1838). 



