SIWALIK AND NARBADA CARNIVORA. 
115—292 
marked resemblance, though they are broadly distinguished by the one being set 
obliquely and the other parallel to the molar alveoli ; as well as by the squared 
hinder end of this tooth in II. crocuta. The profile of this skull is very similar to 
that of H. felina. 
Second specimen . — In figures 1 of plates XXXV., XXXVI., there are given two 
views of another cranium of a Siwalik hyaena, also formerly in the collection of the 
Asiatic Society of Bengal, and now in the Indian Museum : it was presented by Col. 
Colvin and bears the number S. 847 in Drs. Falconer and Walker’s catalogue of the 
Society’s collection, where it is alluded to 1 as u cranium, nearly entire, deficient only 
in the right zygomatic arch, and in the basal part of occiput, but covered with 
matrix, and the teeth so mutilated that only the second premolar is distinctly seen ; 
the incisors and canines in situ , but broken off.” It has now been cleaned from 
matrix, and exhibits 2 the six incisors (i) with their summits broken off ; the bases of 
the canines (c), which are not fully protruded, and, therefore, indicate that the skull 
belonged to an adolescent animal ; the complete pm. 2 of the left side, which by its 
proximity to the canine, indicates the absence of pm. 1 ; the base of the right pm. 3 • 
the alveoli of the carnassials ( pm. 4 ), filled with matrix ; and the complete m. 1 of 
either side. In the following table the dimensions of this specimen are compared 
with those of the last : — 
First specimen. 
Width, of palate at pm. 4 . , . . 3*55 
Interval between posterior border of palatines and anterior border of incisive alveoli 4 - 52 
,, ,, post-orbital process of frontal and same ..... 4 - 35 
,, ,, hinder border of carnassial and hinder border of canine . . 3'0 
Space occupied by incisors . . . I - 36 
Length of pm. 2 0-61 
„ „ „ 3 0-85 
„ „ „ 4 . 1-5 
Transverse diameter ofm.l 059 
Antero-posterior diameter of third incisor 0 - 49 
Interval between m. 1 and middle line of palate 0-96 
Second specimen. 
3- 54 
4- 55 
4-75 
2-9 
1-46 
0-67 
0- 85 
1- 45 (?) 
. (left) (right) 
0-48 0-45 
0-52 
0-99 
These measurements show that the skull under consideration agrees with the 
first specimen in the width and length of the palate, in the spaces occupied by the 
cheek-teeth and the incisors, and, approximately, in the size of the former : it also 
agrees in the width between the true molars and the median line of the palate, and 
in the absence of pm. 1 ; as well as in the oblique position of pm. 2 and pm. 3 . It 
differs, however, slightly from the first specimen by the greater length of the interval 
between the post-orbital process of the frontal and the incisive border, but this 
cannot be considered 'more than an individual variation. The most important 
difference between the two skulls is the smaller size of m. 1 in the second specimen ; 
— a difference so great that it was originally considered as indicating a complete 
transition from II. felina to H. sivalensis of Mr. Bose ; the great differences between 
2 See “Palaeontological Memoirs,” vol. I., p. 343. 
3 In tbe palatal view, owing to the imperfection of the occiput, the specimen is only drawn as far back as the post- 
glenoid process. 
