173—2 
SUPPLEMENT TO CRANIA OE RUMINANTS. 
Family — B 0 VTT} /R . 
Genus: BOS. 
Species : Bos planifrons & Bos acutifrons, Lyd. Plates XII, XIII, XVI, 
figs. 2, 4, pp. 109, 112.^ 
Professor Riitimeyer ^ considers that both these forms are closely related to, 
if not varieties of, the European Bos primige^iius, and that they both belong to the 
same species, the differences in the form of the skulls and horn-cores being merely in- 
dividual or sexual varieties. With regard to the latter hypothesis, I may mention 
that we have other imperfect frontlets of these forms in the Indian Museum, showing 
that the cranial characters of the figured specimens are constant. Erom the great 
differences in the form of the two skulls, already sufficiently pointed out in my 
descriptions, I cannot but adhere to my opinion that these two skulls belong to per- 
fectly distinct species. I have already pointed out the resemblance of the skull of 
B. planifrons to that of B. primigenius ; Bos acutifrons, on the other hand, appears 
to me to be so widely different in the form of its occiput, frontals and horn-cores 
from B. primigenius^ that I cannot consider them even closely allied, much less as 
belonging to the same species. Professor Rutimeyer does not mention that both the 
Indian species are certainly not newer than the Pliocene, while the European species 
is of Pleistocene age. 
Bubalus platyceros, Lyd. Plate XVIII, p. 127. 
Synonym : Bubalus sivalensis, Rut. 
Professor Rutimeyer® mentions that Bubalus platyceros belongs to the same 
species as a cranium in the British Museum, which he has described and figured 
under the name of Bubalus sivalensis.^ My own name was first applied to the 
species in 1877,^ while Professor Rutimeyer’ s description did not appear till the 
following year, after my figm^e and full description were published; my name has, 
therefore, the right of priority. Even apart from this, since the name of Bison 
sivalensis has been applied to one of the Siwalik Bovidse, it would not be desirable 
to have the same specific name for another species which by many naturalists 
would be included in the same genus. 
* The references here given to the “ Crania of Ruminants” refer to the volume paging. 
^ loc. cit., p. 184. 
® Ibid, p. 186. 
^ Ibid. PI. II, figs. 4, 5, p. 138. 
‘ Rec. Geol. Surv. India, Vol. X, p. 31. 
