MEETCOPOTAMID^:. 211 



most of the teeth hammered off ; from the Pliocene of the 

 Siwalik Hills. This specimen is figured by Falconer and 

 Cautley, op. cit. pi. lxvii. fig. 4. The interval between the 

 canine and the hinder border of m. 3 is 0,198 ; and the 

 antero-posterior diameter of the base of the canine 0,029. 

 Cautley Collection. Presented, 1842. 



18444. The left half of the symphysis of the mandible of a female, 

 {Fig.) showing the alveoli of the incisors and the broken base of 

 the canine ; from the Pliocene of the Siwalik Hills. This 

 specimen agrees with 18442 in its wide symphysis and 

 the deep fossa on the outer side, behind the canine. The 

 antero-posterior diameter of the latter is 0,018. The 

 specimen is figured by Falconer and Cautley, op. cit. 

 pi. lxviii. fig. 18. Cautley Collection. Presented, 1842. 



18443. The greater portion of the mandible of a young male, with 

 (Fig.) the milk-teeth, of which the crowns are wanting ; from 



the Pliocene of the Siwalik Hills. This specimen is figured 



by Falconer and Cautley, op. cit. fig. 17. 



Cautley Collection. Presented, 1842. 



17002. The anterior portion of the right ramus of the mandible of 

 a young animal, probably belonging to the present species, 

 with the crowns of the teeth hammered off; from the 

 Pliocene of the Siwalik Hills. 



Cautley Collection. Presented, 1842. 



Merycopotamus nanus, Lydekker 1 (ex Falc. MS.). 

 Syn. Merycopotamus dissimilis, Falconer and Cautley (in parte). 

 The distinctive characters of this smaller species are noted under 

 the head of M. dissimilis. 

 Hah. India. 



16551. The cranium of a male ; from the Pliocene of the Siwalik 

 (Fig.) Hills, India. This specimen is figured by Falconer and 

 Cautley in the ' Fauna Antiqua Sivalensis,' pi. lxvii. fig. 3, 

 under the name of M. dissimilis, var. major. The whole 

 of the dentition is shown, although the crowns of the earlier 

 premolars are broken off; all the true molars are well 

 worn. The cusps of these teeth are lower than those of 

 M. dissimilis ; the length of the space occupied by the 

 three true molars is 0,0655, as against 0,082 in M. dis- 

 similis (No. 18441) ; the interval between the canine and 



1 Geol. Mag. dec. 3, vol. i. p. 545 (1884). 



p2 



