SIWALIK AND NARBADA PROBOSCIDIA. 
51—232 
In fig. 2 of Plate XL of the “ Pauna Antiqua Sivalensis,” there is repre- 
sented a small upper tetralophodont tooth of Mastodon latidens, which is doubtfully 
described as the third milk-molar. That tooth, though unfortunately represented on 
a very small scale, seems to correspond in every particular with the tliird upper 
milk-molar described above (in comparing these teeth, allowance must of course be 
made for the fact that our specimen is much worn, while Palconer’s is an unworn 
germ), and I have no doubt but that they are the corresponding teeth. Ealconer’s 
specimen is, however, somewhat smaller than Mr. Theobald’s, which may very pro- 
bably be accounted for by the one tooth having belonged to a female and the other 
to a male individual. The length of Ealconer’s specimen is 3 inches, and its width 
1-8 inches. 
In figs. 3 and 3a of Plate XXXI of the “ Eauna Antiqua Sivalensis,” there 
is represented a fragment of the right maxilla of a young individual of M. latidens 
containing two teeth, which were doubtfully considered by Dr. Ealconer as being the 
third milk-molar and the first true molar. The most anterior of these teeth (remem- 
bering that the two specimens belong to opposite sides of tlie jaw) will be found to 
agree very closely in all respects with the third upper milk-molar from the Punjab, 
described above ; the only difference between the two being that the hind-talon is 
rather less developed in Ealconer’s specimen. The length of the latter specimen is 
3‘7 inches, and its width 2-6 inches. This length agrees precisely with that of our 
Punjab specimen, but Ealconer’s specimen is rather the wider of the two. There 
seems, however, to be no doubt but that the two teeth correspond in relative position. 
Third loiver milk-molar . — Of the third lower milk-molar, a nearly perfect speci- 
men is represented in fig. I of Plate XXXVII. This specimen was formerly in 
the collection of the Asiatic Society of Bengal, and was from thence transferred to 
the collection of the Indian Museum ; it is described by Dr. Ealconer at page 206 of 
the Catalogue of the Eossil Vertebrata in the Museum of the Asiatic Society. It 
is uncertain whence this tooth came, but Ava seems to be the most probable locality. 
The tooth is implanted in a fragment of the right ramus of the mandible ; in front 
of this tooth there is the remnant of a smaller tooth ; the jaw is very small and 
narrow. In describing this specimen. Dr. Ealconer considered it as being probably 
the first true molar, but the jaw is much too small to have carried three teeth in 
front of this tooth, while the proportion of this tooth to the last upper milk-molar 
represented in fig, 8 of Plate XXXVII is very much the same as exists between 
the lower and upper second milk-molars represented in figs. 2 and 4. I, therefore, 
think it probable that the specimen represented in fig. I is really the third 
lower mil k-molar of Mastodon latidens, and I shall accordingly so consider it. The 
anterior ridge and talon are a good deal damaged, but the tooth when complete 
carried four transverse ridges and a large hind-talon. The charaeters of the tooth 
are so essentially those of the second lower milk-molar represented in fig. 2 of 
the same plate that no further description is necessary. The length of the tooth is 
4-1 inches, and its greatest width 2*2 inehes. 
