256 

 Elasmosaurus platyurus, Cope. 



Notes on tlie Geoloj;y iif the Soiilbeiu Division of tbe Pacific Railroad, by .1. Lecontc , 1608, 1 

 1). 08; Extinct Batracbia anil Rcptilia (if Noitb Anicrie.T, etc., 18!i'J, p. -1 1 ; Haydcn, 

 Geological Snrvey of the Tenjtoiies, 1H70, Wyoiiiinf;, p. li'.W. — Hif^cosniinis airi/Ki/iiv, 

 Cope, Lecoute'rt Notes, /. c. 



Niobrara Cretaccoii.s of Kansas. 



PLESIOSAURUS, Conybeare. 

 Plesiosaurus lockwoodii, Cope. 



Extinct Batracbia and Reptilia of North America, IWiO, p. 40. 



Cretaceous clays, No. 1, New Jersey. 

 Plesiosaurus brevifemur, Cope, Jip. nov. 



Ciiiioliasaitnis miifjmis, Leidy, Cope, part ; Extinct Batracbia .and Reptilia of North America, 

 18G9, 11. 43 ; lig.s. 13-15, p. 41. 



Greensand of No. 5, New Jersey. 

 Plesiosaurus gulo. Cope. 



Proceedings of tbe Academy of Philadelphia, 187'2, 128. 



Niobrara Cretaceous of Kansas. 

 Plesiosaurus occiduus, Leidy. 



yothosaurtis occiduus, Leidy, Proceedings! of tbe Academy of Philadelphia, 1870, p. 74 ; 

 Report of tbo Geological Snrvey of the Territories (4t(>), 1873, I, i>. 345, Table. 

 XV, figs. 11-13. 



Lignite Cretaceous of Moreau Eiver, Dakota. 



ISCHYROSAURUS, Cope. 



Extinct Batracbia ami Rcjitilia of Norlli America, \S6'd, p. 38. — hclnirotkcriiim, Loidy, Pro- 

 ceedings of the Academy of Philadelphia, 1850, p. 89 ; Transactions of the American 

 Philosophical Society, 1860, p. 150. 



ISCIIYKOSAIIRUS ANTIQUUS, Cope, /. C. 



Ixchtjrolhcrium aiifiqnum,^Ani\y,h v.; Transactions of tlio American Philosophical Society, 

 1*^(10, Table X, figs. 8-17. 



Liguit(! period l)etwoen Morcan and Grand Rivers, Nebraska. 



TEST UDIN ATA. 



PROTOSTEGA, Cope. 



Proceedings of tln^ American Philosophical Society, 1^71, p. 175 ; /. c, 1872, p. 422. 



Protostega gigas, Cope, /. c. Plates X, XL XIT, XIII. 

 P^rom tlie Niobrara Cretaceous of Kansas. 



