186 TTNOCLATA. 



26802. The astragalus ; from the Upper Eocene of Vaucluse. 



Pomel Collection. Purchased, 1851. 



26803. The navicular ; from the Upper Eocene of Vaucluse. 



Pomel Collection. Purchased, 1851. 



26804. The cuboid ; from the Upper Eocene of Vaucluse. 



Pomel Collection. Purchased, 1851. 

 (See also ADDENDA.) 



Xiphodon gelyensis, P. Gervais 1 . 



This species has been hitherto known only by the imperfect ramus 

 of the mandible figured by P. Gervais, loc. cit. 2nd ed. pi. xv. fig. 4, 

 which was obtained from the Upper Eocene of St. Gely-du-Fesc, near 

 Montpellier (Herault), Prance. The specimen noticed below agrees 

 so closely with the type, that it may be at least provisionally referred 

 to the same species. 



Hob. France. 



M. 1419. The left ramus of the mandible, containing all the cheek- 

 teeth (the last milk-molar being still in position) ; from 

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

 This specimen, which is represented in the accompanying 

 woodcut (fig. 24), from the very elongated form of the 



Fig. 24. 



Xiphodon getyensist The left ramus of the mandible; from the Upper 

 Eocene of Oaylux. \. 



premolars and the apparent absence of a diastema, seems 

 to belong to a true Xiphodon, and is of much smaller size 

 than X. gracilis. The three true molars agree almost 

 exactly with those of the type of X. gelyensis ; but the 

 last milk-molar is rather longer than pm . 4. The length 

 of the space occupied by the seven cheek-teeth is 0,061, 

 and that by the three true molars 0,025 ; the latter dimen- 

 sion in the type specimen being 0,0265. The teeth are 

 very like those of X. gracilis. Purchased, 1884. 



1 Zool. et Pal. Fran9aises, 1st ed. vol. i. p. 90 (1848-52). 



