664 Fossil Remains of the Dddupur Collection. [Oct. 



the occiput to the anterior extremity of the intermaxillaries to be pro- 

 portionately greater than in the fossil. 



It will be observed, that the male, with exactly the same space 

 occupied by its molars as by those of the sow, has a greater frontal and 

 parietal breadth of upper plane of the head. In both fossils there is, 

 in the frontal plane, a total absence of convexity : as this plane 

 ascends, there is a tendency to concavity, in consequence of the parie- 

 tal crests being more strongly marked than in the existing species, 

 and thus producing the appearance of a gentle hollow where in the 

 common wild hog there would be a gentle swell. 



The orbits are in the fossil proportionately less, situated higher, 

 and more forward in the head ; their horizontal is greater than their 

 perpendicular diameter, whereas in the existing species these are nearly 

 equal : the post, orbital apophyses of the frontals are not so salient, 

 and those of the jugal bones are less distant from the anterior of the 

 orbit than is the case in the existing species. 



Considering the sex of the fossil cranium, the saliency of the zygo- 

 matic arches correspond in the two species. 



On reference to the table of measurements, it will be seen that the 

 occiput of the specimen third in the table is, in consequence of hav- 

 ing belonged to a male, larger than that of fig. 1, Plate XXXIV. The 

 specimen here alluded to possessing only one molar, could not be 

 introduced into the foregoing table of proportions : supposing, how- 

 ever, the space occupied by its molars to have been equal to that of 

 fig. 1, Plate XXXIV. and fig. 5, Plate B, the height of this occiput 

 yields a proportion of 1.071, which is very similar to that obtained for 

 the existing species. The breadth across the condyles is comparatively 

 less in the fossil ; but the transverse breadth of the occiput at the 

 broadest part is more developed than in the existing species. 



No sutures can be traced in the fossils. From the foregoing re- 

 marks it is evident that in several respects the species differ. We shall 

 now proceed to examine the dentition, which presents a few modifi- 

 cations worthy of notice. 



Upper jaws. The plane of the palate extends backwards behind 

 the seventh molars, even further than in the common hog. 



The teeth correspond in number with those of the existing species, 

 the incisors being | canines ^ — |, molars y — f . 



With exemplars of the earlier stages of the dentition in the upper 

 maxillaries, we are not well provided : a small fragment containing 

 the 3rd and 4th molars but slightly worn, shows that the 4th milk 

 tooth resembled that delineated by Cuvier in his Plate 1, fig. 6 ; 

 but the 3rd molar, though composed of similar parts, is a little longer 



