261 



Tkionyx iialophilus, Cope. 



Proceedings of the Academy of Natural Sciences, 18G9, p. 12; Extiuct Batrachia and Kept ilia 

 of North America, 1870, p. 151, Plate VII, fig. 15. 



Greensand, No. 4, of Delaware and New Jersey. 

 PLASTOMENUS, Cope. 



Annual Iieport of the Uuited States Geological Survey of Montana, Wyoming, etc., 1872, p. 017. 



Plastomenus coalescens, Cope. Plate VIII, figs. 6, 7. 



Supra, p. 93. 



Fort Union epoch of Milk River, Saskatchewan, British North America. 

 Plastomenus costatus, Cope. Plate VIII, fig. 8. 



Supra, p. 94. 



Fort Union epoch of Milk River, Saskatchewan, British North America. 

 Plastomenus insignis, Cope. Plate VI, fig. 10. 



Haydon's Bulletin of the United States Geological Survey, No. 2, 1874, p. 29. 



Fort Union epoch of Colorado. 

 Plastomenus punctulatus, Cope. Plate VI, fig. 9. 



Hayden's Bulletin of the United States Geological Survey, 1874, p. 29. 



Fort Union epoch of Colorado and Nebraska. 



COMPSEMYS, Leidy, Cope. 



Supra, p. 91. 



Compsemys ogmius, Cope. 



Supra, p. 91. 



Fort Union epoch of Milk River, British North America. 

 Compsemys victus, Leidy. Plate VI, figs. 15, 16. 



Proceedings of tbe Academy of Natural Sciences, Philadelphia, 185G, p. 312 ; Transactions 

 of the American Philosophical Society, 1800, p. 152, Plate XI, fig. 557. 



Fort Union epoch of Nebraska, Colorado, and !Milk River. British North 

 America. 



Compsemys obscurus, Leidy. 



Emys obscurus, Leidy, Pro 

 obscurus, Cope, Extii 



Fort Union epoch of Long Lake, Nebraska 



Emys obscurus, Leidy, Proceedings of the Academy of Philadelphia, 1850, 312. — Compsemys 

 ooseurus, Copo, Extiuct Batrachia and Eeptilia of North America, 1870, 124. 



