SIWALIK AND NARBADA PROBOSCIDIA. 
15—196 
agrees so closely in size with the Perim tooth, and also with the upper molars of 
the same species in the thickness of the enamel, I have referred it to the same 
species. 
The first lower molar of D. indicwm agrees with the other remains of the same 
species in being slightly larger than the correspondmg tooth of D. giganteum. 
The presence of the large cingulum on the former distinguishes it from the latter. 
Distribution,— The, distribution of Dinotherium indicum now extends from 
Perim Island through Sind to the north-western Punjab. 
Characters . — The species is still very imperfectly known. It appears to he the 
largest known species of the genus, and is mainly characterized by its thick enamel. 
Dr. Palconer thought from the study of the jaw, that he could trace indications of 
a closer affinity with the Mastodons, than exists in other species of the genus. 
It is much to be hoped that we may eventually discover the skull of tliis and the 
other Indian species. 
Species 3 : Dinotherium sindiense, n. sp. nobis. PI. XXXI, fig. 4. 
Besides the two foregoing species of Dinotherium, we have one specimen of a 
lower jaw in the Indian Museum, which indicates the existence of a thud Indian 
species of the genus, which must have been of very small size, and which I propose 
to call Dinotherium sindiense, as the specimen in question was obtained in Sind by 
Mr. Pedden. A notice of the discovery of this specimen has been previously given 
in the “ Records.”^ The specimen is represented of the natural size in fig. 4 of 
Plate XXXI, and will he seen to consist of a fragment of the hinder part of the right 
ramus of the mandible, carrying two broken molars. Although these molars are 
considerably damaged, enough of them remains to determine their serial position. 
The tooth on the left side of the figure will be clearly seen to be a molar, which 
originally carried two ridges and a large hind talon, and in fact corresponded in 
form to the molar on the right hand of the jaw represented in Plate XXX, the 
two specimens belonging to opposite sides of the mandible. This tooth therefore 
is the last lower true molar, and the preceding more broken tooth (on the right side 
of the figure) will consequently he the second true molar. The position of these 
teeth being determined, it follows that the jaw belonged to a fully adult animal, and 
that it cannot be a young specimen with the milk-dentition, in which case the 
last tooth would have had three ridges. 
Although the teeth of this specimen are considerably smaller than the corre- 
sponding teeth of Dinotherium pentajpotamice, I should not, probably, on these 
grounds alone, have referred the Sind mandible to a different species. The form of 
this new lower jaw is, however, so totally different from the lower jaw of D. penta- 
potamice, of which the teeth are represented in Plate XXX, that there can be no 
' Eec. Geol. Surv. of India, Vol. XII, p. 43. 
