29 



difference in the size of this specimen and the larger 

 specimens described by Filhol in the Ann. Sci. Geol. 

 vol. vii. art. 4, pp. 200-214, viz. : 



Upper teeth : B M . Filhol . 



Length of pm. 1 0,0065 0,0066 



Height 0,004 0,0069 



Interval between pm. 1 and pm. 2 0,006 0,002 



Length of pm. 2 0,009 0,0095 



Height 0,005 0,009 



Length of pm. 3 0,011 0,01 



Height 0,005 0,0089 



Length of pm. 4 0,009 0,0096 



Height 0,006 0,009 



Length of m. 1 0,006 0,009 



Height 0,003 0,007 



Interval between canine and m. 1 .... 0,0475 0,037 



Lower teeth : 



Length of pm. 4 0,015 0,009 



Height 0,008 0,0096 



Length of m. 1 0,006 0,0065 



Height 0,004 0,0065 



Length of m. 2 0,008 0,0085 



Height 0,006 0,0073 



Purcluised, 1859. 



M. 1678. Fragment of the right maxilla, containing the third 

 and fourth premolars and the two true molars ; from the 

 Upper Eocene of Bach. This specimen, with the excep- 

 tion of being slightly smaller, is very similar to the corre- 

 sponding portion of a cranium figured by Filhol in the 

 Ann. Sci. Geol. vol. vii. pi. xxxiv. fig. 170 ; but the last 

 premolar is relatively smaller. Purchased, 1884. 



M. 1679. Fragment of the right maxilla, containing the four pre- 

 molars and the alveolus of the canine; from the Upper 

 Eocene of Bach. This specimen is of the same size as the 

 last, but corresponds otherwise to the cranium figured by 

 Filhol (loc. cit.). Purchased, 1884. 



M. 1680. The symphysis and part of the left ramus of the mandible, 

 showing the premolars and the first true molar ; from the 

 Upper Eocene of Bach. This specimen is rather larger 



