CAENIVOEA. 



16584. Distal extremity of the left ramus of the mandible of a 

 (Fig.) ' Hyama, containing the broken base of the canine and the 

 three premolars ; from the Pliocene of the Siwalik Hills. 

 This specimen is figured by Falconer and Cautley in the 

 ' Fauna Antiqua Sivalensis,' pi. M. fig. 3 ; and is alluded to 

 by the present writer in the ' Palaeontologia Indica/ ser. 10, 

 vol. ii. p. 287. Its teeth agree with those of No. 39731, 

 and the two evidently belong to the same species. 



Cautley Collection. Presented, 1842. 



Hyaena colvini, Lydekker 1 . 



This species is distinguished from the preceding one by the 

 larger size of the upper true molar, and by the taller and more 

 slender crown of the third upper premolar, and the shorter crown 

 of the second tooth of the same series ; the first upper premolar is 

 absent. In the lower jaw the premolars are likewise tall and 

 slender, but there is very great difficulty in determining which jaws 

 belong to this specimen and which to the last. It is highly probable 

 that there is in reality an almost, or quite, complete passage from 

 the last to the present species. 



Hob. India. 



M. 1552. Cast of the cranium of an adult individual, containing 

 the third and fourth premolars of the right side, and 

 showing the broken bases of most of the other teeth, but 

 wanting the greater part of the left maxilla. The original 

 of this specimen, which is the type of the species, is from 

 the Pliocene of the Siwalik Hills, and is preserved in the 

 Indian Museum, Calcutta ; a specimen in the Science 

 and Art Museum, Dublin, is believed to be the missing 

 portion of the left maxilla. The cranium is described and 

 figured by the present writer in the ' Palseontologia Indica,' 

 ser. 10, vol. ii. p. 290, pi. xxxv. fig. 2. It shows that 

 pm. 3 is very different from the corresponding tooth of 

 H. felina in No. 37138. Purchased, 1884. 



M. 1551. Cast of the cranium of an immature individual, showing 

 the bases of all the teeth and the complete pm. 2. The 

 original of this specimen is from the Pliocene of the 

 Siwalik Hills, and is preserved in the Indian Museum, 



1 Palaontologia Indica (Mem. Geol. Surv. Ind.), ser. 10, vol. ii. p 290 



(1884). 



