SIWALIK SELENODONT SUINA, ETC. 
19—160 
“ Records ” already quoted, and provisionally referred to Hyopotamus palceindicus : the 
specimen was obtained by Mr. Fedden, from the lower Manchhars of Sind. It comprises 
the posterior part of the horizontal ramus, showing the bases of the second and third 
true molars, and the anterior part of the surface for the attachment of the masseter 
muscle. The jaw is slender and elongated, the inferior border of the dentigerous 
portion being nearly straight and inclining rapidly upwards : posteriorly to this 
portion there is a broad open notch, and , then the commencement of a descending 
process. Both the notch and the descending process are much less developed than in 
Mery cop otamus, in which genus the mandible is relatively much stouter and deeper. 
The form of the section of the last true molar agrees precisely with the base of the 
last lower molar represented in figure 3 of plate XXIII., and provisionally referred 
to Hyopotamus palceindicus, and it, therefore, ■ seems almost certain that the two 
specimens belong ,to the same species. The figured jaw agrees very closely with the 
corresponding portion of the mandible of Hyopotamus bovinus figured by Professor 
Owen, in the memoir already quoted but its resemblance to the slender jaw of the 
so-called H. aymardi , 2 in which the descending plate at the angle is largely developed, 
is still more close. The depth of the Sind jaw is 1*3 inches, and the length of the 
last true molar T36 inches. It will thus be seen that the present jaw is of a more 
slender type than that of the small Antkracofherium silistrense described above ; in 
this point, therefore, the two Indian specimens respectively agree with the 
proportionate forms of the jaws of the European species of Hyopotamus and 
Anthracotherium. 
Distribution. — Remains of this species have hitherto been obtained only from 
the lower Manchhar rochs of Sind. 
Species 2. Hyopotamus giganteus. n. sp. Nobis. 
History. — As there seem to be two species of Indian Anthracotherium , the one 
large and the other small, so there appears to have been a large and a small species 
of Hyopotamus, the former forming the subject of the present notice. The only 
previous notice of this species is a statement in the “Records” for 1882, 3 to the 
effect that Mr. W. T. Blanford had in the early part of that year obtained from the 
lower Manchhar rocks of the Bhugti hills, to the north of the Sind frontier, several 
molars of a species of Hyopotamus of larger size than those of any known species of 
the genus. Among these teeth was, however, included the above-described upper 
molar on which Anthracotherium hyopotamoides is founded, and there consequently 
only remain two teeth which can certainly be ascribed to the present species. 
Tipper molar. — In figure 3 of plate XXIV. there is figured one of the two 
molar teeth discovered by Mr. Blanford. The specimen is a last upper molar, 
as is gathered from the absence of a disc of pressure on the posterior aspect of the 
crown, and is in a middle condition of wear : it has lost its two outer angles, and a 
portion of the loop connecting the two outer columns, but is otherwise perfect. 
i ‘ Quar. Jour. Geol. Soc.,’ Vol. IV., pi. VIII., fig. 3. 2 “ Mammiferes Fossiles de Eonzon,” pi. XXI. 
3 Vol. XV., p. 107. 
