CRANIA OR RUMINANTS RROM THE INDIAN TERTIARIES. 63—150 
Genus : AMPHIBOS, Falconer. 
This genus, as I have already stated in the introduetion, was formed by 
Dr. Ealconer upon the evidence of the crania of three species of oxen-like animals 
from the Siwaliks, of which species only one can be now recognised. As in the case 
of the preceding genus, no definition of Amphihos was ever given by Dr. Ealconer ; 
from the characters of the cranium it may be shortly defined as follows : — 
Erontals flat or slightly hollow, broader than long : horn-cores rounded in front, 
angulated behind, long and porrect at first, placed below the plane of the occiput on 
a slight elevation of the frontals ; parietals shorter than in last genus ; facial nearly 
as long as the frontal portion ; teeth of the Bovine type. 
Amphibos acuticobnis, Falconer. PI. 21, f . 1 ; PI. 24. 
Eigures of the cranium of this species have been given in one of the unpub- 
lished plates of the “ Eauna Antiqua Sivalensis,” and a few notes are added in the 
accompanying index. We possess in the Indian Museum several crania which agree 
in form and size with Ealconer’s figures of this species, and which I have accord- 
ingly referred to it ; the specimen of which a frontal view is given (Plate XXIV) 
was collected by Mr. Theobald from the Siwaliks of the Kangra district ; with 
the exception of the greater part of the premaxillse, which have been broken away, 
the whole of the facial and frontal portions of the cranium are complete ; both 
horn-cores have been broken away near to their origin ; the fragment of the horn- 
core remaining on the left side of the specimen has been damaged on its anterior 
surface, so that its true form is not shown ; the occipital and spheno-palatine regions 
could not be cleared from the exceedingly hard matrix in which they are embedded ; 
most of the cranial sutures are obliterated, and the permanent molars are much 
worn, showing that the cranium belonged to an adult animal. 
A profile view of another specimen also from the Siwaliks is given on Plate XXI, 
Eig. 1. In the front view of the cranium the frontal and facial portions of the 
cranium are seen to be of nearly equal length ; the frontals are somewhat broader than 
long, and depressed in the middle line ; the orbits are salient and separated by a deeply 
excavated but short interval from the horn-cores ; inf eriorly the maxillae contract 
suddenly below the orbits (in some specimens, however, this contraction is not so 
marked, and it may probably be a sexual character). The nasals are long and 
rounded ; at their proximal extremity they reach about a third up the orbit ; they 
are widest at their infra- orbital angles ; they contract below this and again expand 
at their distal extremity. The horn-cores are situated on a ridge of the frontals 
above and behind the orbits, but considerably in advance of the plane of the occi- 
put ; they are separated by a moderate interval at their bases, the median line of 
the frontals being hollowed between them ; from the fragments remaining in the 
