SIWALIK AND NAEBADA BUNODONT SUINA. 
37—71 
agrees in contour with the type skulls, and shows the elongated m- 2 characteristic 
of young individuals. 
In figure 5 of plate VII. of the present volume there are represented the cheek- 
teeth of one side of the hinder part of a palate of a Siwalik pig in the British 
Museunfi ; in which there is seen a fragment of the well-worn m- 1 , and the complete 
m 2 and m. 3 ; the last is untouched by wear, while m. 2 is in a middle stage of 
detrition. The dimensions of this specimen are as follows, viz. : — 
Length of m. 2 1'4 Length of m. 3 2'2 
Width „ „ 0-83 Width „ „ „ M 
In this specimen m. 2 exhibits very perfectly the extreme complexity of pattern 
characteristic of the present species, and is more elongated than in any other jaw. 
The last molar is also unusually complex ; its length being greater in proportion to 
its breadth than is normally the case with the corresponding tooth of any described 
species of the genus. Although the molars of this specimen are slightly longer than 
those of any of the specimens yet described, the jaw may be safely referred to the 
same species. In figure 8 of the same plate there is represented a fragment of the 
right maxilla of a pig in the Siwalik collection of the Indian Museum, containing 
m. 2 and m. 3 , which present similar characters to the foregoing, although of 
somewhat smaller dimensions^ : both teeth are more worn than in the specimen last 
described, and m. 2 is imperfect anteriorly. Their dimensions are as follows, viz. : — 
Length of m. 2 0‘92 (?) Length of m. 3 1'7 
Width 0-79 Width 0-91 
From their little worn and perfect condition the teeth of these two specimens 
exhibit in the most marked degree the points distinguishing the molars of the 
jDresent species from those of S. gigantcus and S. titan. Thus, if the perfect m. 2 in 
figure 5 be compared with the slightly more worn homologous tooth of the former in 
the jaw represented in fig. 12 of plate LXXI. of the “ F.A.S.,” and with the more 
worn one in plate XI., fig. 2, of this volume, the contrast between the elongated crown, 
with the complex pattern on its worn surface, of the one, and the square crown, with 
its simple pattern, of the other, will be at once perceived. The corresponding upper 
tooth of S. titan., although probably more elongated than that of 8. giganteus, must 
have been much wider than the corresponding tooth in fig. 5, since the dimensions of the 
latter are almost the same as those of the lower tooth of 8. titan represented in fig. 4, 
and upper molars are always much wider than their corresponding lower teeth. 
Similarly if the last molars of the two specimens under consideration be compared 
with the corresponding tooth of 8. giganteus, and that of 8. titan represented in fig. 6 
of tiie same plate, analogous differences will be observed. Thus the hindmost teeth 
of the present species are much longer and narrower ; and their talon, instead of 
consisting simply of one median column [a) with a horseshoe-shaped portion [b) 
behind it, consists of the same median column (a) with a pair of columns (b) behind, 
1 This specimen is also figured in pi. LXXI., fig. 13, of the “ F.A.S.,” under the name of S. giganteus. 
2 This specimen is the one mentioned under the number 318 in the note on page 513 of the first volume of the 
“ Palaeontological Memoirs where it is referred simply to Sus. 
