PREPACE. 
xvn 
buffaloe, Bu-ffelus mdicus : this name is, of course, synonymous with the name Bubalus 
buff elm adopted by Gray,^ and B. arm, adopted in tbis volume, after Jerdon.^ 
Professor Riitimeyer also mentions another, apparently Indian species, under 
the name of Buffelus sondaicus. 
The genus Bibos, according to Professor Riitimeyer, includes the domestic In- 
dian cattle, B. indicus, the Gour, B. gaurus, a doubtful species named B. gavceus, 
and B. sondaicus {banting of Gray and this work). Bibos frontalis (the Mithun or 
Gayal) of Lambert and Hodgson is omitted from the list, unless it be B. gavceus. 
Whether or no the Mithun occurs now in the wild state or not, it appears to me to 
be a distinct species, though there are some skulls in the Indian Museum which 
bridge over the gap between this animal and the typical Gour. 
Cee-vtjs. — A palatal portion of a skull containing teeth similar to those 
figured on Plate VIII, fig. 3, under the name of Cervus simpUoidens, seems to 
confirm the generic identification of those teeth. Of Cervus trijplidens (figs. I, 2, 
Plate VIII) I have not obtained any additional specimens, but I think the generic 
identification is here also correct. One of the Siwahk deer had flattened and 
branching antlers much like those of Cervus duvaucellii, indicating the high state 
of evolution of the group in Siwahk times. 
The Indian Museum has lately obtained a complete maxilla, containing molars 
like the one tooth drawn in figs. 7 and 10 of Plate VIII. I had some hesitation, 
as noticed in the text, in referring the figured tooth to Cervus, and I still am not 
quite sure whether such reference is correct, though I think it very possibly is. 
The amount of variation in the form of the molars of the Gervidee is so great that 
it is very difficult to say, in the case of isolated teeth, how far this variability may 
extend. I have, on account of the possibility of doubt, not included Cervus latidens 
in the list of ruminants given on page ISO. I hope eventually to obtain materials 
which will decisively indicate the genus of the teeth in question. 
The lower molars of a Cervus drawn in fig. 5 of Plate VIII, which I thought 
might possibly belong to G. simplicidens, I now find, from the character of their 
enamel, belong, in all probability, to a new species, which I propose, on a subse- 
quent occasion, to call G. sivalensis. 
Pal^omertx. — A single tooth of a ruminant from the Siwaliks, lately presented 
to the Indian Museum by the Roorkee (Rurki) Museum, seems to belong to 
Balceomeryx, and to have been about the size of P. bojani : this tooth seems to 
have come from the lower Siwaliks (Nahans), and a lower molar from probably 
the same horizon in Sind, not impossibly belongs to the same genus. 
Camelopardalis. — A more complete lower jaw of Camelopardalis sivalensis 
than the one of which the molars are drawn in fig. 5 of Plate VII of this 
volume has lately been acquired by the Indian Museum ; the new specimen is 
Brit. Mus. Cat. 
2 Mammals of India, p. 370, 
