LOPHIODONTID^I. 9 



figured by Gervais in the Zool. et Pal. Franchises, 2nd ed. 

 pi. xvii. figs. 3-5, but are rather smaller. No history. 



M. 2427. The first or second right tipper true molar ; from the 

 Calcaire Grossier (Middle Eocene) of the Paris Basin. 

 This tooth is larger than the second molar of the last 

 specimen. Purchased, 1885. 



26827. The first or second right upper true molar ; from the Middle 

 Eocene of Paris. The length of the outer border is 

 0,028. Pomel Collection. Purchased, 1851. 



M. 2428. Two upper premolars ; from the Middle Eocene of Paris. 



Purchased, 1885. 



29629. Cast of the mandible of a subadult individual, showing the 

 nearly complete dentition. The original is from the 

 Middle Eocene of Nanterre, near Paris, and is figured in 

 De Blainville's ' Osteographie,' Genus Lophiodon, pi. ii., 

 under the name of " Lophiodon de Nanterre " ; it is 

 preserved in the Paris Museum of Natural History. 

 There are six cheek-teeth. 



Presented by the Paris Museum of Natural History. 



26825. Fragment of the left ramus of the mandible, with m. 2 and 

 m7~3; from the Lower Eocene of Cuyse-la-Motte. The 

 last tooth agrees very closely with the one figured by 

 Gervais, op. cit. fig. 6. 



Pomel Collection. Purchased, 1851. 



Lophiodon, sp. a. 



Gervais (Zool. et Pal. Frangaises, 2nd ed. p. 124, pi. xxxv. fig. 17) 

 indicates a second form from the Middle Eocene of the Paris Basin, 

 smaller than L. parisiensis. The length of the external border of 

 the type m- 2 is 0,020. The species may perhaps be identical with 

 one of those already named. 



Hob. France. 



M. 2429. The first right upper true molar, probably belonging to 

 this form ; from the Calcaire Grossier (Middle Eocene) of 

 the Paris Basin. The length of the external border is 

 0,0185. Purchased, 1885. 



M. 2426. Two upper premolars, probably belonging to the same 

 form ; from the Middle Eocene of Paris. Purchased, 1885. 



