SIWALIK AND NARBADA BUNODONT SUINA. 
19—53 
S. cristatus. No specific name was, however, assigned to either form, although both 
were considered specifically distinct from the living swine of India. A large 
number of the remains of Siwalik swine were subsequently figured by Falconer and 
Cautley in the “Fauna Antiqua Sivalensis”“ and were referred to three species, 
namely, S. gfiganteus, jS. hysiidrictis, and S. (BippoJnjus) sivalensis. No descriptions of 
these species were, however, ever published, and their identification accordingly rests 
solely on the figures. The remains figured in that work under the first name belong 
to at least two species ; and it appears that the first published occurrence of the 
name is in that work. A skull of a large pig from the Siwaliks was briefly mentioned 
at a later date by the present writer under the first name, but is referred below to a 
new species. 
Type cranium. — The specimen which the writer thinks it best to take as the type 
of the present species is the very perfect cranium from the Siwalik Hills represented 
(I-) in plate LXIX., figs. 1, la, lb, Ic, of the “ F.A.S.,” and now preserved in the 
British Museum (No. 15,385). It is noticed in the description of the plate in the 
following words, viz. : — “ The zygomatic arches are perfect. There are three molars 
on either side, and also the last premolar. The specimen is broken off in front of 
the last premolar. The extreme distance between the zygomata is much greater 
than in B. cristatus. The sub-orbital foramina are large, and the bone is deeply 
channelled in front.” The most striking feature in the skull, which is considerably 
larger than that of 8. cristatus, is the excessive width of the zygomatic arches ; the 
anterior root of which bends out very suddenly from the maxilla. The vertical 
height above m. 3 , and at the occiput, is considerably greater than in 8. cristatus and 
8. scrofa ; and the facial profile is straighter than in the former, and ascends more 
rapidly towards the occiput than in either. The temporal fossae encroach much 
more extensively on the parietals, making the superior surface of those bones at the 
pre-occipital contraction much narrower. The orbits are relatively smaller ; and 
the palate extends much farther behind m. 3 than in either of the two living species. 
The fronto-parietal region is markedly convex, the concavity in front of the 
orbit being dee23 and broad behind : and the complete skull must evidently have been 
relatively short, and, therefore, very different from that of 8. scrofa. The molars 
of this specimen are much worn ; and their distinctive characters will be noticed 
below. The great zygomatic width of this specimen indicates that it probably 
belonged to a male ; while the worn condition of the molars shows that it belonged 
to a very old individual. It probably indicates a full-sized example of the species. 
Second specimen . — In figs. 2, 2a of the same plate of the “ F.A.S.” there is 
represented (|-) the anterior portion of another Siwalik cranium in the British Museum 
(No. 16,166), showing the last five cheek-teeth in a less worn condition. This 
specimen agrees very closely in general contour with the last : the zygomatic arches 
are, however, slightly less prominent, and the molar series somewhat longer : the 
latter point causing the prolongation of the palate behind m. 3 to be somewhat less. 
1 Plates LXIX. -LXXI. 
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