68—34 INDIAN TERTIARY AND POST-TERTIARY VERTEBRATA. 
described below. The structure of the molars of the present specimen is much 
more complex than in 8. giganteus or 8. titan ; but these characters are better 
exhibited by less rvorii sj^ecimens described in the sequel. The last upper molar of 
8. harhatus is much simpler than that of 8. cristatus, and is, therefore, quite unlike 
the corresponding tooth of the fossil. 
Cranium of female. — In plate X. of the present volume there is represented (!■) 
the skull of a female pig from the Siwaliks, which from its general agreement with 
the last specimen may be referred to the same species : the right upper cheek-dentition 
of this cranium is represented of the full size in plate VIE, fig. 7. This specimen is 
preserved in the Science and Art Museum, Dublin (No. C. 27), and is one of those 
figured and described by Baker and Durand.^ It is nearl}^ complete and has suffered 
but slightly from crush : all the teeth, with the exception of the canines and outer 
incisors, are in position ; all the true molars are very much worn ; and the alveoli 
of the canines and outer incisors are filled with matrix. In general form this skull 
agrees very closely with the male specimen ; being distinguished only by the small 
size of the canines, and the absence of the overhanging protuberance. These two 
characters clearly indicate the female sex of the present specimen. 
The more perfect preservation of the present specimen permits of fuller 
comparisons than were possible with the male skull. Thus it is seen that the length 
of the nasals^ considerably exceeds the length of the fronto-parietal region ; and it 
is, therefore, evident that the present species has no affinity Avith 8. titan., 8. 
giganteus., and the 8. cristatus group, in which the reverse is the case. The present 
specimen also shows the AAude and flattened fronto-parietal region, the narrow nasals, 
and the deflected muzzle ; as Avell as the advanced position of m. 3 in regard to the 
orbit ; in all of which characters it differs from 8. giganteus and 8. titan.^ The 
extension of the palate behind the last-named tooth is intermediate between the 
condition prevailing in 8. giganteus and 8. cristatus. The zygomatic arches are Avider 
in the middle than posteriorly ; Avhich is a character given by Rollestoir* as distinctive 
of 8. harhatus : the pre-orbital concavity is also deep as in that species, instead of 
Avide and shalloAV as in 8. scrofa. 
As it is apparently only in /?. scrofa and 8. harhatus among living pigs that the 
length of the nasals largely exceeds the length of the fronto-parietal portion of the 
skull,^ it is evidently only Avith those two that the fossil is allied. It is distinguished 
from the former by the greater deflection of the muzzle, the flattened frontals, 
the form of the pre-orbital concaAuty and of the zygomata, and the large protuberance 
over the canine of the male. It agrees, however, Avith that species in the fact that 
1 Two views (J- nat. size) are given on plate XXXA^. of Baker and Durand’s memoir ; while the dentition of the left 
side is represented of the full size on plate XLIV., fig. 3, of the same memoir. The latter figure is reproduced on a smaller 
scale by De Blainville (“ Osteographie,” Genus Sus, pi. IX.) under the name of S. sivalensis. 
2 The length of these hones can be estimated from that of the premaxiUm. 
3 The width of the parietals at the teniporal fossm has not been determined in this species. 4 Op. cit., p. 265. 
5 Vide Rollcston, op. cit. 
