347 



mens I have supposed to indicate a genus closely related with Tautoga, and 

 have named it Protautoga. 



The more complete specimen contained a row of eight teeth in a space of 

 an inch and a quarter from the symphysis. The first large tooth is 5J lines 

 long: the crown-like portion is 3J lines long, witli the breadth at base 2i 

 lines. The second tooth is 4.4 lines long; the crown-like portion is 2 lines 

 long and 1.6 lines in diameter at base. The other teeth range from 2 lines 

 to a line in length. 



SPHYEiENID^. 



ENCHODUS. 



Enchodus Shumarui. 



Leidy : Pr. Ac. ^^at. Sc. 1856, 257. 

 Described page 289, and represented by Fig. 20, Plate XVII. From the 

 Cretaceous of Sage Creek, Dakota. 



PHASGANODUS. 



Phasganodus oirus. 



Leidy : Pr. Ac. Nat. Sc. 1857, 107. 

 Described, page 289, and represented by Figs. 23, 24, Plate XVII. From 

 the Cretaceous of Cannon Ball River, Dakota. 



CLADOCYCLUS. ? 



ClaDOCYCLUS 1 OCCIDENTALIS. 



Leidy : Pr. Ac. Nat. Sc. 1856, 256. 

 Noticed page 288, and represented by Figs. 21, 22, Plate XVII, and Fig. 

 5, Plate XXX. From the Cretaceous of Sage Creek, Dakota. 



Clupeid^. 



CLUPEA. 



ClUPEA HUMILIS. 



Leidy : Pr. Ac. Nat. Sc. 1856, 256. 

 Page 195, and represented by Fig. 1, Plate XVII. From the Eocene 

 shales of Green River, Wyoming. 



Clupea alta. 



Described page 196, and represented by Fig. 2, Plate XVII. From the 

 Eocene shales of Green River, Wyoming. 



