60 PROCEEDINGS OP THE GEOLOGICAL SOCIETY. [Dec. 3, 



is separated from the latter and from the fourth, by spaces about 

 three-quarters of an inch wide. The fourth tooth, broken short off, 

 must have been a very large one, being not less than three-fourths 

 of an inch in diameter at the base. It is separated by a deepish 

 fossa, 0*7 inch wide, from the succeeding tooth. This, the fifth, is 

 close to the sixth, and both are small, the base of neither attaining 

 more than 0-3 inch in diameter. The seventh and eighth teeth, 

 rather large, are situated at tolerably equal intervals from one an- 

 other, and from their predecessors and successors, in the interspace 

 of about 2 inches which separates the sixth from the ninth tooth. 

 There are marked fossae, as if for the reception of the points of man- 

 dibular teeth, between them. The bases of the ninth and tenth teeth, 

 close together, occupy 0*7 inch. They are separated by a space of 

 about half an inch from the eleventh tooth, and this by a somewhat 

 smaller interval from the twelfth, which is close to the thirteenth. 

 The bases of these last-mentioned teeth do not exceed 0*4 inch in dia- 

 meter. The last tooth is nearly on a level with the anterior margin of 

 the palato-temporal foramen. There is a fossa of nearly the same size 

 as its base behind it, but no trace of the attachment of any other tooth. 



The premaxillary and maxillary teeth on the right side by no means 

 exactly correspond, either in position or in size, with those on the left. 



The tooth nearest the middle line in the right premaxilla is six- 

 tenths of an inch in diameter, and its base and its several fragments, 

 when put together, show that it had a length of at least an inch and 

 three-quarters. The two succeeding teeth are about half an inch in 

 diameter at the base, and are not more than a quarter of an inch apart. 

 Then follows an interspace of 0-9 inch, in which I think I can trace 

 the remains of the attachment of a great tusk. Then comes a large 

 tooth, 0-7 inch in diameter at the base ; and then four small ones, none 

 of which exceed 0-3 inch. The crowns of the succeeding teeth are all 

 broken off, and lie with their points inwards upon the matrix, which 

 covers this region and obscures their broken roots. None of them, 

 however, have a basal diameter of more than 0-35 inch, and the last 

 measures hardly more than 0-2 inch at the base. The anterior of 

 these teeth are about 1-3 inch in length, while the hinder ones 

 become shorter, until the last was probably not more than half an 

 inch long when entire. The right vomer gives attachment to an im- 

 mense tusk, 0*8 inch in diameter at the base. It could hardly have 

 been much less than 3 inches long, but it is unfortunately broken 

 short off. The left vomer presents the surface for the attachment 

 of a similar tusk, but the tooth itself is entirely detached. There is 

 not the least trace of the existence of any other vomerine teeth besides 

 these. 



On the left side, the palatine bone, eight-tenths of an inch behind 

 the posterior nasal aperture, supports a tusk 0-6 inch wide at the 

 base, which, when entire, was very nearly 2 inches long. The pala- 

 tine bone is raised up into a ridge, so as to form a sort of alveolar 

 wall on the outer side of this tusk, and the wall is continued back- 

 wards as a thin plate of bone directed almost horizontally inwards (/). 

 At a distance of three-quarters of an inch from the great anterior 



