112—14 INDIAN TERTIARY AND POST-TERTIARY YERTEBRATA. 
shown that a second species indicated by myself in the “ Records ” 1 on the evi- 
dence of a last lower molar mnst also he merged in C. sivalensis. It was thought 
in the same notice 2 that a third species was indicated by a last lower premolar, 
but this specimen now turns out to belong, to Hydaspitlierium . 
Genus II : YISHNUTHERIUM 3 , Nobis. 
This genus was established by myself in 1876, on the evidence of a portion of 
the lower jaw of a giraffe-like ruminant : as the genus only contains one species its 
history may be given with that of the latter. The placing of this genus next to 
Camelopardalis is only provisional, and depends on the correctness of the determi- 
nation of certain limb-bones to be noticed below. The skull is unknown. 
Species : Yishnutherium iravadicum, Nobis. 
History. — The first notice of the lower jaw on which this genus is founded ap. 
peared in the “Records of the Geological Survey of India ” for 1876 \ The speci- 
men, which is the only one known, is described, and the teeth figured, in the first 
volume of this work 5 : it was obtained from the Siwaliks of Burma, by Mr. W. T. 
Blanford. 
The jaw is characterised by its slender form, and the true molars are construct- 
ed after the type of those of the giraffe, and have the same rugose enamel, but are 
of considerably larger size. They are further distinguished by the presence of a 
distinct ‘ cingulum ’ on the outer surface, and of a relatively large tubercle in the 
‘ median valley ’ of both the first and second true molars : the tubercle in the first 
true molar is the larger of the two, and thus shows an analogy with the lower 
molars of the giraffe. 
The above specimen is the only one which can be undoubtedly assigned to the 
genus, the reference to it of the other remains described below being merely provi- 
sional. 
Upper true molars. — In figure 7 of plate XYI of this memoir are represent- 
ed the second and third right upper true molars of a large ruminant, collected by 
Mr. Theobald in the Siwaliks of the Punjab near the village of Asnot. These 
teeth are but slightly worn, and in beautiful preservation, their • enamel presenting 
the finely reticulate or rugose structure .so characteristic of the giraffes and siva- 
theres. The ‘ lobes 5 on the outer sides of the teeth are placed obliquely to the long 
axis of the latter, so that the posterior overlaps the anterior * lohe ; ’ the central 
pits are very deep, and extensively connected with each other. The external or 
dorsal, surface of each tooth is noticeable for the comparatively slight development 
1 Vol. XI, p. 86. 
2 P. 87. 
3 The name of this genus is taken from the third god of the Hindu trinity, Vishnu, and was applied to it .as 
being analogous to Falconer’s names Sivatherium and Bramatherium, from Brama, and Shiva (Siva), the other 
members of this trinity. > 
4 Vol. IX, p. 103. 
5 P. 55, pi. VII, figs. 1 & 2. 
