CRANIA OR RUMINANTS RROM THE INDIAN TERTIARIES. 15—102 
Transvei-se diameter of left orbit ........ 2'2 
Length of temporal fossa . . . . . . . . . 5'3 
Interval between base of bom-core and orbit . . . . . . .34 
Height fi'om lower border of foramen magnum to occipital crest .... 4 o 
Interval between occipital crest and intercornual ridge ...... 2’0 
Length of intercornual ridge ......... 6 2 
Interval between exterior angles of occipital condyles . . . . . .38 
Width of occiput between temporal fossae . . . . . . . 4'7 
Antero-posterior diameter of base of born-core . . . . . . ' . 2 5 
Transverse ditto ditto . . . . . . . 2'4 
Circumference of ditto ........ 6'0 
Width of palate ... ........ 3'8 
Interval between outer surfaces of second molars ..... • 5‘2 
Length of six molars .......... 5‘5 
„ of last molar .......... 1'4 
The frontals of the above specimen differ from those of the larger crania by 
being rather more concave in the middle line, and by having a sharp ridge nearly 
half an inch in height running along the frontal suture for the attachment of the 
frontahs muscle. The intercornual ridge forms a high convex arch overhanging 
the plane of the occiput, when the skull is placed horizontally ; the horn-cores 
have an almost completely circular cross-section ; the general form of the whole 
occipital surface agrees exactly with that of the large Nerbudda specimen described 
above ; the line of the molar series is nearly straight ; the costse on the external 
surfaces of the molars are prominent and of nearly equal height ; the accessory 
column on the inner side of the molars is large, with a constricted neck. The 
dimensions of a detached horn-core of the female from the Nerbudda valley are as 
follows : — 
Circumference at base .......... 9'5 
Length along upper curvature ......... 10'4 
This horn-core is perfeetly cylindrical, is greatly curved, and tapers very 
rapidly from base to tip another fragment of a larger horn-core in the Indian 
Museum has a deep and wide groove running along the concave curvature, and 
continuing almost to the tip ; I have not seen a similar groove in any other 
specimen. 
Eragments of the cranium and teeth of this species have been brought by 
Mr. Eedden from the older alluvium of the Perim-ganga River in the Hyderabad 
distriet ; remains of the species were also determined by Dr. Ealconer from the 
older alluvium of the Jumna ; both deposits being probably near the horizon of 
the Nerbudda gravels. 
Dr. Ealconer suggested that the cranium of the typical Bos namadicus bore a 
considerable resemblance to that of the European Bos prbnigenius ; a comparison 
of the two crania, however, shows considerable differences ; for this comparison we 
may refer to a figure of the frontal aspect of the cranium of Bos primigenim 
given in Professor Owen’s “British Eossil Mammals and Birds” ( p, 498, ed, 1847), 
