1883.] 



217 



Lacertilia. 



Sp. indet 1 



Testudinata. 



Trionyx, sp . 

 Trionyx, sp. . 

 Stylemys, sp. 



RODENTIA. 



Castor, sp 2 



Carntvora. 



Galecynus gregarius 



Hoplophoneus, sp 



? Hoplophoneus 



Perissodactyla. 



Aceratherium, sp 



Aceratherium, sp )- 3 



Anchitherium, sp 



Artiodactyla. 



Elotherium ramosum 



Hyopotam is sp 



Oreodon, sp 



Oreodon, sp 



Oreodon, sp 



Leptomeryx, sp 



Hypertragulus, sp 



Total species 21 



"Interesting features of the above catalogue are : The absence of Hyra- 

 codon and Poebrotherium, so abundant in the beds of this age elsewhere ; 

 the presence of fishes, not hitherto detected in them ; and the presence of 

 the genius of tortoises, Trionyx. The latter genus has not hitherto been 

 found in our Western lacustrine beds of later than Eocene age ; while they 

 are abundant in our modern rivers. This discovery partially bridges the 

 interval. The same is true of the fishes mentioned, which represent the 

 order Nematognathi." 



PROC. AMER. PHILOS. SOC. XXt. 114. 2b. PRINTED OCTOBER 30, 1883 



