218 FAUNA ANTIQUA SIVALEXSIS. 



of Plate XVII. Tlie inner conicle tubercle is retained on 

 to the anterior tooth, with but an inconsiderable modifica- 

 tion of the character which it shows in the back molar, 

 and separated by an intervening valley from the outer 

 lobe. There is no trace of a rudimentary first molar in any 

 of the fragments. In the Dadoopoor specimen the alveolar 

 border falls off in an abrupt step upon the diasteme in front 

 of the anteror tooth. 



The molars and premolars of the upper jaw of C. Goldfussi 

 agree in form and proportions so nearly with those of G. 8i- 

 valense that it is not necessary to do more than refer to 

 Kaup's figures. The crown ridges and principal points are 

 less elevated, and the dividing vallies more open and shal- 

 lower. The tooth which Kaup figures and describes as the 

 middle lower incisor of the left side is here regarded as the 

 penultimate upper premolar of the right side. 



Inferior Molars. — The molars in the lower jaw, like those 

 above, were limited to six, viz. three true molars and three 

 premolars. 



The Dadoopoor specimen, Plate XYII. figs. 3 and 4, shows 

 on the left side the anterior four of these teeth entire, and the 

 front half of the fifth, in apposition with the upper jaw, 

 while the detached left ramus (figs. 6 and 7) presents the last 

 four molars in situ, together with the empty alveoli of the two 

 first. This fragment had belonged to a young animal which 

 had just acquired its permanent teeth, the last premolar being 

 fully protruded but tmworn, while the last true molar is in the 

 germ state, and had not entirely pushed through the gum ; the 

 crown of its posterior half is broken oft'. The teeth and the 

 form of the jaw are so much alike in the two specimens, 

 that there cannot be a doubt of their having belonged to the 

 same species of animal. 



The inferior molars of Chalicotherium Sivalense differ more 

 from those of Anoplotherium commune than the upper, and 

 the points in which they diff'er constitute characters of resem- 

 blance to Palceotherium, while at the same time they are 

 marked by some peculiarities which are not met with in either 

 of those genera. These teeth have the general form of those 

 of Palceotherium, consisting of two semi-cylindrical lobes ; 

 and they further agree with the latter genus, in the two last 

 l)remolars being double-barrelled, like the three true molars ; 

 while in Anoplotherium the premolars differ very materially in 

 form from the back teeth. The convexity of the lobes is less 

 uniform and cylindrical than in Palceotherium ; as in Anoplo- 

 therium they contract upwards to a small pyramidal point at 

 the outer side, but without bulging into convexities below, as 

 in the latter genus ; while at the same time they hardly ex- 



