SIWALIK AND NARBADA CARNIVORA. 
129—306 
place of convex. The occipital crest is smaller in the fossil, but in another specimen 
is as well developed as in the living species. Allowing for this difference, the 
occipital surfaces of the two are also very similar. 1 On the inferior aspect the 
opening of the posterior nares has the same shape in both ; and the general form of 
the palate is also very similar, although owing to the position of m. 1 in the fossil the 
extension of the palate behind pm.' 4 is greater than in the recent species. The 
postglenoid process of the former extends farther forwards. 
Second cranium. — In the British Museum there is another cranium of a small 
Siwalik hyaena (No. 37,136), represented (-|) in plate K, figs. 4, 4a, 4b, of the 
“ F.A.S.,” agreeing in all respects with the specimen described above. It has been 
somewhat damaged by rolling, and comprehends the greater part of the skull as far 
back as the middle of the brain-case, where it is broken off by an oblique fracture. 
The teeth are much worn and broken, but the whole of the four premolars are 
present ; and the left pmj exhibits clearly the sub-equality in size of its three lobes. 
The superior aspect is extremely like that of the skull of II. striata ; and the large 
postorbital processes of the frontals are well displayed, and in conjunction with the 
opposite zygomatic processes, enclose a large portion of the hinder border of 
the orbit. 
Third cranium. — In figures 3, 3a, 3b, of the plate last quoted there is represented 
(£) the hinder half of a third skull of a small Siwalik hysena, also in the British 
Museum (No. 37,134) : this specimen agrees precisely in size and general form with 
the two skulls noticed above, and doubtless belongs to the same species. It exhibits 
the sagittal crest more fully developed than in the type skull ; and is therefore 
nearer to II. striata. 
Mandible. — In plates XXXVIII., fig. 5, and XXXIX., fig. 7, there, are given 
two views of a nearly complete left ramus of the mandible of a Siwalik hysena in 
the British Museum, 2 differing from the mandibles of either of the three preceding 
species. The specimen is complete, with the exception of the summit of the 
coronoid process ; and shows the whole of the dentition ; the cheek-teeth being 
much worn, and the greater part of the crown of the canine broken away. A 
fragment of the right ramus is attached to the symphysis ; while the condyle is still 
clasped by the glenoid fossa, which has been torn away from the skull. 
In figures 2 and 5 of the two plates mentioned above there is represented the 
hinder portion of the right ramus of a precisely similar mandible, collected by 
Mr. Theobald in the Siwaliks of Asnot, Punjab. It contains two teeth, — viz., pm. 4 
and m. 1, which being but slightly worn are in a better condition for comparison 
than those of the first specimen, and it will accordingly be better to describe the 
two specimens together. 
In the British Museum specimen there are four cheek-teeth ; namely, pin. 2, 
pm. 3 , pm. 4 , and m. 1 : there being no trace of pm. 1 or m. 2 ; and the number of 
1 Compare the figures in the “ F.A.S.,” or “ Pal. Mem.” 
2 This specimen is also represented in F.A.S.,” plate M, figs 2, 2a. 
F 2 
