SIWALIK AND NARBADA CARNIVORA. 
107—284 
far forwards as the blade, — a character of II, crocuta , as distinguished from E. 
striata and II. brunnea. Pm. 3 has likewise a relatively low crown, and a markedly 
convex external vertical contour : it is set obliquely to the molar alveoli, with its 
hinder end obliquely truncated, and has a well-marked hind talon, and an in- 
distinct fore one 1 ; there is a fairly distinct vertical ridge at the hinder border of 
the crown, but none anteriorly : and no trace of a cingulum on the outer surface, 
and no distinct one internally. Pm. 2 is a long narrow tooth, with small but 
distinct fore-and-aft talons ; the latter being considerably the larger of the two. 
It is impossible to say whether pm, 1 existed in this specimen. 
Characters of upper cheek-teeth. — In regard to its upper cheek-teeth, it may be 
affirmed of the species to which the foregoing specimens belonged, that it differed 
both from H. striata , and E. brunnea , in having the 3rd lobe of pm. 4 relatively 
large ; and in the small size of m. 1 ; It also differed from the former by the 
smaller development of the talons of pm. 2 and pm. 3 ; and from both by the less 
oblique position of these teeth, and the absence in them of a distinct cingulum. 
There is, therefore, apart from the cranial differences, no doubt that this form is 
specifically distinct from either of the others. 
The teeth agree more nearly with those of E. crocuta in respect of the form 
of pm. 4 and m. 1 ; but are distinguished by the less specialized character of the 
former, and by the crown of pm. 3 being relatively lower, and its excess in height 
over pm. 2 less marked ; its hind talon is also relatively larger : pm. 2 is both longer 
and narrower : while the long axes of these teeth are continuous, in place of forming 
a well-marked angle at their junction. 2 Pm. 3 is further distinguished by being set 
somewhat obliquely to the molar alveoli ; and by the absence of a ridge at its 
antero-internal angle, which is more or less distinctly marked in E. crocuta. 
Further comparisons will be instituted after the description of the mandible. 
Third upper incisor. — -In figure 3, of plate XXXV, there is represented the 
third left incisor of a large liysena, obtained by Mr. Theobald, from the Siwaliks of 
Asnot, not improbably belonging to the present species. The antero-posterior 
diameter of the base of the crown is 0*66 ; or somewhat larger than that of the 
corresponding tooth of the Dublin cranium. All the other Siwalik hyaenas have 
smaller incisors. The cingulum on the inner side of the specimen is very slightly 
developed. 
Mandible of Dublin specimen. — In the Dublin specimen (woodcut fig. 13) the 
mandible is fairly complete, and of the normal hyaenine form. As in all the 
existing species, pm. 1 is absent, but the interval between the canine and pm72 is, 
as in the upper jaw, relatively small. Regarding the other teeth, pm. 2 has a 
minute fore 3 and a large hind talon ; pmTh has no distinct fore, but a large hind 
talon ; while in pm. 4 there are both large fore-and-aft talons, the latter being the 
1 The talons in the Dublin skull appear slightly more developed than in the present specimen. This character is, how- 
ever, exaggerated in the figure, owing to the former being viewed obliquely, and the latter directly from the outer side. 
2 See De Blainville “ Osteographie,” Genus Hyaena, pi. Ill (palate of JI. crocuta). 
3 The obliquity of the figure causes this talon to appear much larger than it really is. 
