HY^ENODOlfTIDJE. 33 



France and the Upper Tertiaries of India of this peculiar 

 form of tooth is a very interesting and noteworthy circum- 

 stance, and affords a well-marked instance of the survival 

 in India and other eastern regions of forms which dis- 

 appeared at a much earlier period in Europe. 



Purchased, 1884. 



Genus PTERODON, Blainville l . 



Dentition 2 : I. ^, C. -J, Pm. -~^, M. |. Cope places this genus 

 and Oxycena in a distinct family Oxyasnidce. 



Pterodon dasyuroides, Blainville 3 . 



Syn. Pterodon parisiensis, Blainville 4 . 

 (?) Pterodon cuvieri, Pomel 5 . 

 (?) Pterodon coquandi, Pomel 6 . 



Hob. Europe. 



M. 1361. Fragment of the right maxilla, containing the first and 

 second true molars, in an almost unworn condition ; from 

 the Upper Eocene of Caylux (Tarn-et-Garonne), France. 

 These teeth are rather larger than those of a fine cranium 

 figured by Filhol in the Ann. Soc. Sci. Phys. Nat. Toulouse, 

 1882, pi. ii. Purchased, 1884. 



27579. Fragment of the right maxilla, containing the last premolar 

 and the three true molars, in a partially worn condition ; 

 from the Upper Eocene of Debruge, near Apt (Vaucluse), 

 France. The teeth of this specimen (which apparently 

 corresponds to P. cuvieri, Pomel) are considerably smaller 

 than those of the last specimen, but do not present any 

 structural difference, and seem to belong to a smaller race 

 of the same species. Bravard Collection. Purchased, 1852. 



M. 1689. Part of the left maxilla, containing the three true molars ; 

 from the Upper Eocene of Bach, near Lalbenque (Lot), 

 France. The teeth of this specimen are slightly smaller 



1 Ann. Fr. et Etr. d'Anat. et de Physiol. vol. iii. p. 23 (1839), teste P. Gervais. 



2 Cope (Amer. Nat. 1884, p. 481) gives the number of the cheek-teeth simply 

 as Pm. , TVI. f . There are, however, seven of these teeth in typical examples 

 of P. dasyuroides ; vide Filhol, Ann. Soc. Sci. Phys. Nat. Toulouse, 1882, pi. ii. 



3 Loc. cit. * Osteographie, genus Subursus, p. 48 (1841). 



5 Bull. Soc. Geol. France, ser. 2, vol. iv. p. 392 (1846). 



6 Catalogue Methodique, p. 117 (1853). 



