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 5| lines 

 long; the crown-like portion is 3^ lines long, with the breadth at base 2^ 

 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. 



SPHYR^NIDiE. 



ENCHODUS. 



Enchodus Shumaedi. 



Leidy : Pr. Ac. Nat. Sc. 1856, 257. 

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

 Cretaceous of Sage Creek, Dakota. 



PHASGANODUS. 



Phasganodus dieus. 



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. I 



CLADOCYCLUS ? OCCIDENTALIS. 



Leidy : Pr. Ac. Nat. Sc. 185G, 25G. 

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

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



CLUPEIDiE. 



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. 



