29—170 
SIWALIK SELENODONT SUINA, ETC. 
an animal connecting that somewhat abnormal form with the tetracuspidate selenodont 
Suina : it is, however, distinguished by the form of the external surfaces of the 
outer columns. Irrespective of its considerably smaller dimensions, the tooth 
differs from the upper molar of Hemimeryx (plate XXIII, figure 5), by the much 
greater development of the vertical ridges on the external surfaces of the outer 
columns ; by which means the external surface of the second outer column ( left-hand 
top corner of figure 11) has its middle line as high as its right side, whereas in 
Hemimeryx the corresponding surface (: right-hand top corner of figure 5) is most markedly 
concave. The antero-internal lobe is, moreover, considerably more complex than in 
Hemimeryx. 
From the molars of Merycopotamus, the tooth before us differs very widely, 
not only in size, but also in structure. The outer columns have their external surfaces 
placed less obliquely to the vertical axis of the crown, and their lateral borders are 
not so much produced above the middle line. The loop connecting the outer columns 
is relatively larger and more compressed laterally : the external surfaces of the outer 
columns are wider, and so-to-speak, less squeezed together. 
The tooth is larger than the molars of Cliceromeryx and differs by having the 
valleys wider and more open, by the more compressed form, and less outward 
development of the loop connecting the outer columns, and also by the form of the 
external surfaces of the outer columns, as can be seen by a comparison of the 
figures. The specimen makes some approach to the molars of Dicrocerus, 1 but is 
distinguished by the incompleteness of the inner ‘ crescents,’ by the outward 
extension of the transverse valley, and by the longitudinal valley being quite open. 
The tooth before us does not seem to approach to any other described form, and it 
seems, therefore, necessary to refer it provisionally to a new genus, for which the 
above title, with the specific name of sindiensis may be adopted. 
Other remains. — As is mentioned in the “ Records,” 2 Mr. Fedden has also 
obtained a lower molar, and the hinder portion of a cranium of a small animal allied 
to Merycopotamus , which may not improbably belong to the present species : both 
specimens came from the lower Manchhars of Sind. The tooth is of much the same 
form as the specimen represented in plate XXIII, figure 1 , but is of smaller size : it 
does not present any characters of generic value, and, therefore, is not figured. The 
portion of the cranium comprises only the cerebral box, and as it has been much 
rolled and otherwise damaged, it has not been figured. It agrees in relative size 
with the upper molar, and as far as can be determined, presents a general resemblance 
to the skull of Merycopotamus ; the cerebral box is, however, more compressed laterally. . 
Further comparisons are impossible owing to the imperfect condition of the specimen. 
l “ Les Enchainements du Monde Animal, etc.,” p. 97, fig - . 120. 
2 Vol. 51, pi. 80. 
