PEEHI8T0RIC TIMES IN BRITAIN. 533 



of five skulls of modern wild Indian hogs thus sent by Sir Walter 

 Elliot, three show the upgrowth of parietal crests, which Lieu- 

 tenants Baker and Durand had supposed to be characteristic of the 

 fossil animal, and to contribute towards justifying its claim to be 

 considered specifically distinct. These three skulls have the follow- 

 ing labels and histories appended to them by Sir Walter Elliot, 

 which, when coupled with the localities assigned below to the 

 British Museum specimens (specimens not, so far as I can see, 

 different in any essential point from Sir W. Elliot's), bear im- 

 portantly on the question of the unity of Sus cristatus : — 



No. 71. Large boar, killed near Rajkote, in Kattywar, June 4, 1832. He was 

 with a large sounder, and ripped two horses severely. Rajkote is in the ex- 

 tensive open plains of the Kattywar peninsula. 



No. 330. Nilgherry Hills, 1840. 



No. 428. Jaggiapettah, 1851. On the east side of the Madras Presidency, in the 

 Masulipatam district, on the high road from Masulipatam to Hyderabad.' 



These three skulls agree in having their third molars considerably 

 worn and their canines large, their muscular insertion-surfaces 

 marked with polygonal reticulations^ in some places, and with 

 arborescent markings in others, and, thirdly, in the spar-like hard- 

 ness and density of the bones generally; and they must be sup- 

 posed consequently to have belonged to old and powerful male 

 animals. In all of these points they differ more or less from the 

 other two skulls, also of male but of younger and less powerful 

 animals. But such diffbrences as these are far from being of 

 specific value, either in comparison of modern races with fossil ones, 

 or in comparison of modern races infer se. All the five skulls, 

 however, lent to me by Sir Walter Elliot possess the lacry mo- 

 frontal ridge developed into a very considerable prominence ; and 

 though every now and then I have had occasion, in going over the 

 extensive series of skulls of Indian wild hogs which have been 

 available to me, to note an almost, I have never noted an entirely 

 complete disappearance of it. The fronto-lacrymal ridge is not, 

 even in the aged hog, a mere expansion or dilatation of the frontal 

 bone : it is underlain, it is true, by an arm of the frontal sinuses ; 

 but it has thick and independent walls of its own. Though not 

 quite exactly homologous with the supraciliary ridges of human 

 anatomy, it is nevertheless very closely comparable with them. In 



^ For similar reticulation in Bos primigenius, see Riitimeyer, ' Fauna der Pfahl- 

 bauten,' taf. iii. fig. 3. 



