121—34 CRANIA OP RUMINANTS PROM THE INDIAN TERTIARIES. 
Height from palate to centre of nasals . . . . . ... .5-3 
„ from posterior extremity of palate to f rentals . . . . . . 7‘8 
Interval between outer surfaces of second molars ...... 6 0 
Width of palate at second molars . . . . . . . .36 
Length from posterior extremity of palate to muzzle . . . ... . 12 0 
„ of six molars .......... 6'0 
Width of maxillae at diastema ......... 4‘6 
The characters by which the skull agrees with Bos are as follows : — 
The flatness of the frontals between the orbits, and the presence of the 
ridge between the frontals and the nasals. 
The shortness of the nasals. 
The unbroken posterior border of the palate. 
The low position of the apex of the nasals. 
The Bubaline characters are — 
The width of the nasals at their lower end, (being wider below than above). 
The height from the palate to the frontals. 
Comparing the figure of this cranium with that of Bos namadicus, the present 
specimen is distinguished from the latter by the premaxillse reaching up to the 
nasals, and by the apex of the nasals not reaching to the lower border of the orbit ; 
the nasals of the two are very different ; the widest part of the nasals of Bos 
namadicus is at their infra-orbital angle, while those of Bos platyrhimis are far wider 
at their distal extremity than at this angle. The angle between the orbit and the 
nasals is more marked in the present species than in Bos namadicus, wliile, as noticed 
above, the height from the palate to the frontals is much greater in this species. 
Comj)aring the present figure with the skull of Bos acutifrons on Plate 13, we 
find only a small portion of the cranium common to the two, viz., that immediately 
between and below the orbits ; this is, how^ever, amply sufiicient to distinguish 
between the two. The apex of the nasals reaches to the lower border of the orbit in 
Bos acutifrons, and the median line of these and the frontals is elevated far above 
the margin of the orbits, the lateral surfaces sloping away from this line ; moreover, 
the supra-orbital sulci have their lower portion extending down between the orbit 
and the nasals, and there would be no prominent angle between the frontals and the 
lachrymals. In Bos platyrhinus, on the other hand, the apex of the nasals does not 
reach upwards to the orbit, consequently the supra-orbital sulcus lies altogether 
above the nasals ; the frontals, between the lower angles of the orbits, are perfectly 
flat, the margins of the orbits being on a level with the plane of the frontals : and 
there is a most marked angle between the frontals and the lachrymals ; and no trace 
of the deep and wide channel between the orbits and nasals that occurs in Bos 
acutifrons. 
In Bos planifrons, again, the apex of the nasals reaches upwards to the middle 
of the orbits, which last are somewhat depressed below the level of the frontals ; 
the median line of the frontals being very prominent. The inclination of the frontals 
to the basis of the cranium in this species and in Bos acutifrons is so sharp that the 
