288 JIE. BUSK ON THE REMAINS OF 



sisted of five ridges with front and back talons. From the very nan-ow width in front, 

 and the rapid increase backwards, it is inferred tliat it was a lower milk-molar, and 

 probably the penultimate (m.-m. 3). 



" Fig. 4 represents the crown and side aspects of a beautifully preserved specimen, com- 

 prising nearly the entire length of the cro\vn, of an inferior milk-molar, left side. The 

 crown presents the disks, well worn, of five ridges with a small posterior talon. The 

 disks are wide and open in the antero-posterior direction, and somewhat rhomboidal 

 in outline, as in the African Elephant, and they bear a close general resemblance to 

 those of figs. 2 and 3. A large fang supporting the last three ridges and talon is pre- 

 sent, nearly entire ; but the front fang is broken off, together with a small portion of the 

 anterior talon. The fractured surface from which the fang had been broken off" is 

 distinctly marked below, and shows that the crown is all but complete in length. The 

 anterior part of the crown appears to have been worn down close to the level of the 

 fang. The grinding-plane is slightly concave in the antero-posterior direction, proving 

 it to have been an inferior molar ; and I infer that it is the equivalent tooth of the 

 specimen last described, i. e. the left lower penultimate milk-molar (m.-m. 3), and that 

 when entii-e it was composed of five ridges with front and back talons. The dimensions 

 are : — 



in. 



Extreme length of fragment 1-30 



Width of cro\vn at front ridge 0-57 



Greatest width of front ridge 070 



" The enamel plates in this, as in the two other s[)ecimens above described, are veiy 

 tliin, with no tendency to crimping, the appearance which looks like this being simply 

 the vertical grooves in contact with the cement. It is important to add that there is a 

 broad and well-defined smooth depression upon the posterior end, indicating the pressure 

 of a contiguous tooth bearing against it from behind. 



" Fig. 5 represents, of the natural size, the top and side aspects of a finely preserved 

 milk-molar of the same series, inferred to be the last of the lower jaw, right side 

 (m.-m. 4). Its crown surface is concave from back to front, proving it to be lower; 

 and the oblique direction of the disks of wear determines the side. With the exception 

 of a little damage to the anterior end, which has removed a portion of the front talon, 

 the crown is quite perfect ; and the whole of the fangs are also present, more or less 

 fractured. The crown was composed of eight ridges, all of which have been affected by 

 wear. The disks bear the closest resemblance in form to those of fig. 4 ; and it will be 

 seen by a comparison of the figures, that they were in a nearly corresponding condi- 

 tion of wear. In three of the intermediate disks (viz. 4, 5, and 6) there is a slight 

 tendency to an angular rhomboidal expansion in the middle ; but, as in the teeth above 

 described, the enamel plates are very thin, and the edges in contact with the ivory- 

 depressions are straight and perfectly free from any tendency to plication or crimping. 



