64 



R. LydeMer — On Fossil Mammalia. 



C<Bnotlierinm, 3 cusps on the liinder lobe of m. 3. 

 No diastema. 



1. Ccenotkerium laticurvafum, St. Gerand-le-Puy. 



2. Ceenotherium commune, Cournon, and Quercy Phosphorites. 



3. Ccenotherhtm Geoffroyi, St. Geraud-le-Puy. 



4. Ceenotherium elongalmn, Quercy Phosphorites. 



A diastema usually present between pm. 1 and pm. 2 in both 

 jaws {maxilla unknown in No. 6). 



5. Cmnotherium cadurcense, Quercy Phosphorites. 



6. Ceenotherium gracile, St. Gerand-le-Puy, and Eonzon. 



A diastema between pm. 2 and pm. 3 {maxilla unknown). 



7. CcBnotherium quinquedentatum, Quercy Phosphorites. 

 Mouillactherinm, 2 cusps on the hinder lobe of m. 3. 



A diastema between pm- 2 and pm- 3 (lower jaw unknown) . 



8. Mouillacthermm elegans, Quercy Phosphorites. 



It will be observed that Nos. 7 and 8 agree in the position of the 

 diastema, and, although the latter is a larger species, their generic 

 identity may perhaps be indicated by this character. 



Fig. 1. Cmiotherium Filholi, Lyd. Upper and lower views of the cranium ; from 

 the Upper Eocene of Gaylux. \. (B. M. No. 1399). 



Among a collection of fossils from the Quercy Phosphorites recently 

 acquired by the British Museum, are two skulls of a species belong- 

 ing to the present group, remarkable for their fine preservation, and 

 on this account alone worthy of description. Both specimens are 

 from Caylux (Tarn et Garonne). The first, which is represented in 

 Figure 1, consists of the cranium only, and is almost as perfect as a 



