84 CARNIVORA. 
16584. Distal extremity of the left ramus of the mandible of a 
(fig.) Hyena, 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,’ pl. M. fig. 3; and is alluded to 
by the present writer in the ‘ Palzeontologia Indica,’ ser. 10, 
vol. u. p. 287. Its teeth agree with those of No. 39731, 
and the two evidently belong to the same species. 
Cautley Collection. Presented, 1842. 
Hyzena colvini, Lydekker’. 
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 isin reality an almost, or quite, complete passage from 
the last to the present species. 
Hab. 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 ‘ Paleontologia Indica,’ 
ser. 10, vol. 11. p. 290, pl. 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, 
? Palezontologia Indica (Mem. Geol. Surv. Ind.), ser. 10, vol. ii. p 290 
(1884). 
