78—44 INDIAN TERTIARY AND POST-TERTIARY VERTEBRATA. 
Asiatic pigs. In the specimen figured by Baker and Durand the canine is of large 
size, indicating a male individual : and from the width of the nasals it is inferred that 
this cranium was relatively shorter than that of S. cristatus. There is an imperfect 
cranium in the British Museum (No. 37,267) from the Siwaliks of Perim Island, in 
which the crowns of the teeth are broken off, exhibiting very similar characters. 
In plate LXXI., fig. 5, of the “ F.A.S.” there is represented the left half of a 
jialate of the same species, now in the British Museum, from Perim Island, showing 
the two last premolars and the three true molars, the last of which is unworn. A 
specimen of a fragment of the right maxilla, from the Siwalik Hills, represented in 
fig. 7 of the same plate, shows m. 2 and ni. 3 in a well-worn condition. The specimen 
of a portion of the right maxilla represented in plate VIII., fig. 10, of the present 
volume was collected by Mr. Theobald in the Siwaliks of the Punjab, and exhibits 
the hinder portion of m. 1 , and the complete m. 2 and ui. 3 ; the latter being in an 
unworn condition. In fig. 11 of the same plate there is represented a fragment of 
the left maxilla, from the same region, showing the last premolar, and the first and 
second true molars ; all in a well-Avorn condition. In the following table the dimensions 
of the four specimens mentioned above, taken in the same order, are conij)ared with 
those of the corresponding teeth of a male of S. andamanensis, viz . : — 
S. hysudricus. 
S. andamanensis. 
/' — 
Length of pm. 3 . . . . 
0-5 
0 4 
AVidth ,,,,,, 
0-35 
0-33 
Length ,, ,, 4 
0-5 
0-5 
0-44 
Width ,,,,,, 
0-53 
0-56 
0-45 
Length ,, m. 1 
0-6 
0-64 
0-67 
AVidth ,,,,,, 
0-58 
0-6 
0*48 
Length ,, ,, 2 
0-8 
0-68 
0-8 0-84 
0-7 
AVidth ,,,,,, 
0-71 
0-7 
0-72 0-73 
0-58 
Length 3 
1-1 
0-85 
1-2 
0-95 
AVidth ,,,,,, 
0-71 
07 
0-72 
0-61 
dimensions of the sjAecimen 
figured by Baker and Durand, and those of 
the one represented in plate LXXI., fig. 9, of the ‘‘ F.A.S.,” are comprised within 
the same limits, it may be taken for granted that the foregoing dimensions indicate 
the average size of the species. The length of ni.JL in the third and fourth columns 
is practically the same as that of the corresponding tooth of the cranium of S. 
cristatus measured on page 55, but its Avidth is greater. The last molar of the 
fossil is, hoAvever, Amry much shorter than in the last-named species ; its length being 
less than that of the two preceding teeth. These tAvo specimens indicate, therefore, 
an animal nearly as large as 8. cristatus ; but the specimen in the second column is 
more nearly the size of /?. andamanensis. The extreme shortness of Jn. 3 distinguishes 
the fossil species from typical examples of 8. scrofa, 8. verrucosus, and 8. cristatus ; 
and allies it Avith 8. harhatus, tlie typical form of 8. vittatus, the 8. andamanensis group, 
and the African river-hogs. The form of the cranium indicates that the fossil has 
no affinity Avith 8. harhatus. In vioAV of the uncertainty existing as to the relations 
of 8. vittatus to the 8. andamanensis group, it is almost impossible, Avhen dealing with 
