126 ME. Q. BUSK ON THE ANCIENT OR 



it will be seen that they are of very large size and furnished with a very strong and 

 prominent simple columella. I am unable to distinguish between these teeth and those 

 of £os primigenius, with which they agree in all particulars. 



The portion of cannon bone, which consists merely of the articular end, measures 

 1"'8 X 3"'5, and is therefore of a size commensurate with the teeth. 



It is, of course, impossible from such scanty materials to come to any definite opinion 

 as to the species ; but it is clear from these relics that an Ox equal to Bos primigenius 

 in size formed part of the fauna of the Rock at a time when its bones were exposed to 

 the gnawing of the Hyena. 



XII. Sus. 

 The upper chamber of the Genista cave afforded numerous relics of a small Pig, 

 consisting for the most part of fragments of the skull and jaws, and more especially of 

 the lower jaw, intermixed with those of man, fragments of pottery, &c., and imbedded 

 in the loose dark mould with which that chamber was occupied. But below the 

 stalagmite floor, at the depth of 24 feet, a few remains were met with of a much 

 larger form, consisting of portions of the right and left rami of the mandible of a young 

 animal, and in which the third molar has not yet made its appearance. Both the other 

 molars are in situ; having apparently just come into wear. The empty alveolus of the 

 third deciduous molar is shown ; and in firont of it the second (]) permanent premolar is 

 just making its appearance ; and in front of that again are the fangs in the alveolus of 

 the first deciduous molar (•32 X "2). The dimensions of the two molars are : — 



S71 •75X-48. 



mT^ -Qx -6. 



The vertical height of the ramus at the second molar is l"-3, and its thickness "9. 

 The only other specimens from below the stalagmite in the Genista cave are : — 



1. Portions of two canines incrusted with stalagmite, but not dendritic ; the greatest 

 diameter of the largest at about 3"-5 from the point is "8, and the radius of the curve 8"-4. 



2. A detached lower third molar, or rather the crown portion in germ and quite 

 perfect, measm-ing l"-5x"8. 



With respect to these relics it cannot be said with any certainty that they belong to 

 the more ancient fauna of the Rock. Their appearance and mineral condition would 

 rather lead to the supposition that they belong to a much more recent period, though 

 perhaps, as it would seem, not immediately associated, like those of the smaller Pig, 

 with man. 



Evidence, therefore, was wanting in the Genista cave and fissure of the actual exis- 

 tence of a species of Sus in the true ancient breccia. But conclusive proof of this has 

 been afforded from another part of the Rock, and which leaves no room for doubt that 

 a species, to judge from the teeth, of the same size as that to which the larger Genista- 

 cave remains belonged really did form part of the ancient fauna. 



