OF THE SIVALIK HILLS. 



45 



most contracted. This curving outwards is most shewn towards the front 

 where the lines of molars appear to attempt a parallelism with the outer line 

 of the maxillary bone, instead of running parallel to each other. The space 

 between the most advanced molar and the canine is very much smaller in 

 the fossil than in the existing animal, a point that may depend perhaps on 

 the substitution of the six small incisors requiring but small alveoli, for the 

 large ones (especially the two centrical) require a much larger surface and 

 a much greater depth to admit of their being securely fixed. The palate 

 is, as in the living animal, marked by a deep fissure in front, between the 

 incisive bones ; and the suture appears similar ; but this is not very dis- 

 tinct in the fragment from which we draw our comparisons ; the two incisive 

 holes are very distinct, but those referred to by Cuvier as commencing on 

 the edge of the maxillaries in a small channel and terminating on the inci- 

 sives by another hole, are not so distinctly marked, although it is by no 

 means improbable that in clearing the fossil which is imbedded in a hard 

 and crystalline sandstone, the two holes have been made into one ; we 

 have before noted the fissure separating the incisive bones, and those (not so 

 strongly marked but equally open outwardly) of the junction between the 

 incisives and maxillaries, or that space between the canine and the third 

 incisive. The extremity of the muzzle in front of the two canines, forms part 

 of a circle ; if this segment be divided into seven equal parts, and one part 

 given to each echancrure (of which there are three), and two parts to each of 

 the incisive bones containing the alveoli of the incisors ; a tolerable idea 

 of the proportions of this region will be obtained. The incisors of the upper 

 jaw as before remarked are in diameter smaller than those of the lower; 

 they project but slightly from the alveoli, are directed downwards, and 

 obliquely truncated on their internal faces. 



It now merely remains with us to compare the occipital face with that 

 of the African animal which may be best done by a reference to our table of 

 measurements. We note however the great difference in the proportions in 

 breadth to height, which in the above animal are as 2 to 1, whereas in the 



M 



