268 



CLIDASTES STENOPS, Cope. Plates XIV, figs. 4, 5; XVII, figs. 7, 8: XVIII, figs. 

 1-5; XXXVI, fig. 4; XXXVII, fig. 3; XXXVIII, fig. 3. 



Edestosaurus stenops, I. c, Hayden's Annual Report of the United States Geological Survey, 

 1871, p. 330. 



Niobrara Cretaceous of the Smoky Hill River. 

 Clidastes rex, Marsh. 



American Journal of Science and Arts, 1872, June. 



Niobrara Cretaceous of Smoky Hill River. 

 Clidastes affinis, Leidy. 



Report of the Uuited States Geological Survey of the Territories, I, p. 281, Table XXXIV, figs. 

 6-9 and 11. 



Niobrara Cretaceous of Smoky Hill Riven 



III. Dorsal vertebra!, with depressed centra; frontal bones unknown: 

 Clidastes dispar, Marsh. 



Edestosaurus dispar, Marsh, American Journa.1 of Scienco and Arts, 1871, June. 



Niobrara Cretaceous of the Smoky Hill River. 

 Clidastes velox, Marsh. 



L. c. (Edestosaurus). 



Niobrara Cretaceous of the Smoky Hill River. 



Clidastes vymanii, Marsh, /. c. 



Niobrara Cretaceous of the Smoky Hill River, Western Kansas. 



Clidastes pumilus, Marsh, /. c. 



Niobrara Cretaceous of the Smoky Hill River. 



Clidastes iguanavus, Cope. 



Proceedings of the Academy of Philadelphia, 1868, p. 223; Extinct llatrachia and Reptilia 

 of North America, 1870, p. 220, Plate V, (jg. 3. 



Greensand, No. 4, of New Jersey. 



IV. Centra of dorsal vertebra compressed: 

 Clidastes cineriarum, Cope. Plate XXI, figs. n-17. 



Proceedings of the American Philosophical Society, 1870, 583. 



Niobrara Cretaceous of the Smoky Hill River. 



