SIWALIK AND NAEBADA BUNODONT SUINA. 
27—61 
that this tooth was inserted only hy two fangs, and was, therefore, quite unlike the 
corresponding tooth of the mandible figured in plate XI. The vertical height of the 
present specimen, as well as its width, is considerably less than that of the latter. 
The sex of the specimen under consideration cannot be certainly determined, but from 
the characters of a specimen described below it not improbably belongs to a female. 
In figure 1 of plate VIII. there is represented a fragment of the right ramus of 
a similar mandible, collected by Mr. Theobald in the Punjab, containing pm. 4, m. 1, 
and m. 2, in a somewhat less worn condition than in the last specimen. Tlie section 
of the root of the canine in this specimen indicates that it belonged to a male 
individual, like the jaw figured in plate XI.; the true molars are precisely the same 
as in the specimen represented in plate VII., fig. 4, but pm. 4 is rather wider : the 
roots of pmTfi are not exhibited. 
There is a third specimen in the Indian Museum (No. B. 358) precisely similar 
to the one represented in plate VII.; and a fourth in the Museum of the Royal 
College of Surgeons (No. 1805); both of which specimens were collected from the 
Siwaliks of the Punjab by Mr. Theobald. 
From the foregoing comparisons (as well as from the dimensions given below) 
there seems no doubt of the specific distinction of the specimens under consideration 
from the mandible figured in plate XI., irrespective of the question to what species 
that specimen belongs. 
With regard to the crania of S. giganteiis^ it is tolerably clear from the 
considerations advanced under the head of that species that the lower molars were 
probably of the proportions of those of the mandible represented in plate XI., and, 
therefore, that the mandibles under consideration do not belong to that species. 
The first and second molars of these mandibles are of the elongated type of those 
of N. erymanthius and B. major ; and it may, therefore, be inferred that the corresponding 
upper molars were likewise of the type of those of the two last-named species, 
which have already been shown to be narrower than those of B. giganteiis} Since 
m.2 of the present mandibles is about half as long again as m. 2 of B. giganteiis, the 
former specimens indicate an animal of considerably larger size than the latter. 
From these considerations it may be taken that the present form of mandible 
most probably indicates a second sjiecies of large Siwalik Bus, with molars of a simple 
structure. The talon of the last tooth of the specimen represented in plate VII., 
fig. 4, consists of a single median column [a), behind which there is a semicircular 
portion comprising a large outer (h), and a smaller and lower inner column (c). In the 
talon of the corresponding tooth of B. cristatus and B. scrofa there is another column 
behind h and c ; and even in the simpler tooth of B. andamanensis^ the talon is of a 
more complex structm’e. 
The figures in the first column of the following table give the dimensions of 
the mandible represented in jDlate VII., fig. 4 ; those in the second of the one in 
1 Compare Prof. Gaudry’s figures {op. cit.) with plate XI., fig. 2, and witli pi. LXXI., fig. 12, of the “ F.A.S.” 
2 Vide Rolleston, op. cit., pi. XLIII., fig. 8. 
H 
