SIWALIK AND NAEBADA BUNODONT SUINA. 
33—67 
Museum type skull of the first of those species ; but the proportions of the two 
skulls are very different. Thus while in S. giganteiis the vertical height of the 
cranium at the infra-orbital foramen is 5’4, and at pm. 4 4*3 inches, in the present 
specimen these dimensions are only 4-3 and 2‘9 inches : the width across the jDarietals 
between the temporal fossae in the present specimen is, moreover, nearly twice that 
of S. giganteiis. The protuberance above the canine in the present specimen is also 
extremely large and elongated, whereas it is' comparatively small and short in the 
cranium of S. titan (pi. IX.), which is probably that of a male : the large size of 
this protuberance and of the alveolus of the canines indicates that the present 
specimen likewise belongs to the male sex. The present specimen also differs from 
the cranium of S. giganteus by the narrower and less prominent zygomatic arches, as 
well as by the more anterior direction of the axis of the orbit. 
The present cranium is indeed of a longer and lower form than that of S. 
cristatuSj and comes nearest in this respect to the cranium of the existing 8. 
harhatus^ of Borneo ; in which the facial portion is very long and low, with a 
marked rise above the orbit towards the occij)ut. The fossil and recent crania 
also agree in possessing a long protuberance above the canine, extending 
backwards as far as m. 1 , instead of stopping at pm. 2 as in other living 
8. titan, and probably. 8. giganteus ; and in having the extremity of the muzzle 
much elongated and deflected considerably below the j)lane of the grinding surface 
of the cheek-teeth ; this character being, however, most marked in the fossil. The 
two crania also resemble one another in the form of the pre-orbital concavity, and 
in having the anterior border of the orbit placed considerably behind ; although 
this character also is most strongly developed in the fossil. In all these respects 
the latter differs very widely from 8. giganteus \ in which the infra-orbital sulci are 
shallower and less curved ; their form being unknown in 8. titan. Other comparisons 
will be made in the description of the next specimen ; but it may be mentioned 
here that the skull of 8. harhatus is readily distinguished from the present specimen 
by the much greater production of the palate behind m. 3 . In the following table 
the teeth of the present specimen are compared with those of 8. eristatus, viz . : 
Specimen. 
S. cristatus. 
Length of three true molars 
3-55 
2-9 
„ ,, pm. 4 
. 
0 54 
0-52 
Width ,, ,, ,, . . 
0*65 
0-55 
Length ,, m. 1 
0-68 
0-62' 
0 
0-94 
0-84 
Width 
0-9 
0-7 
Length „ 3 . 
1-94 
1-51 
Width 
1T4 
0-82 
Long diameter of canine 
IT 
10 
In the present specimen the length of ^ considerably exceeds the united 
length of the two preceding teeth : but this appears to be in great part due to the 
much worn condition of the latter, as it is not the case with little worn specimens 
1 The skull of this species is figured hy Rollcston, ‘ Trans. Linn. Soc.,’ Zool., ser. 2, vol. I., pi. XLIII., fig. 7. 
