306 ON FOSSIL riSH-TEETH. 



for two thirds of its whole length, when it curves rapidly round to the an- 

 terior horn, or projecting point of the tooth. The bounding ridge behind, 

 also, though sharp, well marked, and high, is less so than in C. Hunterianus. 

 It does not gradually diminish with a continuous slope to the first or an-, 

 terior horn, but at a little more than one third of the distance it drops by 

 a sudden step to nearly the general level of the surface of the tooth. 



These differences appear to be constant in all the specimens we have 

 seen, and to be sufficient to mark a specific difference or at least to be 

 sufficient to justify our separating them under a different name for the 

 present. They may possibly arise from difference of age in the in- 

 dividual, even supposing the supposition, that there was only one tooth 

 in each jaw, be proved tenable. 



In the small collection forwarded by Mr. Hislop, we found a very strong, 

 large, and massive tooth, which on trial was found to fit these teeth with 

 tolerable accuracy. It is a flat five horned tooth, PI. xiv- 8, 10, 

 and, as we suppose, therefore a lower jaw tootli. The general surface of 

 the tooth is flat, or slightly convex, the interior edge, corresponding 

 to the lofty ridge in the upper tooth, being depressed and rounded in 

 this. The ridges and horns are strongly marked and project consider- 

 ably above the general surface, being separated by flatly concave 

 depressions. Besides the fine punctations on the surface, there are 

 numerous irregular pittings, or little depressions. 



The bony layer in this tooth is more massive and stronger than in 

 the others ; its thickness being equal to that of the enamel layer. The 

 lower surface is marked by a long furrow, or curved concavity, and on 

 the outer edge there is a well marked projection, or bony process, similar 

 to that noticed in the other species, PL xvi. Fig. 2. 



The species has been named after the intelligent native Collector, who 

 procured the specimens, forwarded by Mr. Hislop; and who was also the. 

 Collector of many other valuable fossil remains from the district of Nagpur. . 



Found with the last. 



