260 

 PERITRESIUS, Cope. 



Extinct Batrachia and Reptilia of North America, 1870, p. 150. 



Pekitresius oenatus, Leidy, Cope. 



L. c, Leidy, Cretaceous Reptiles of the United States, p. 303, Plato XVIII, fig. 10. 



Greensand No. ? of New Jersey. 



PNEUMATARTHRUS, Cope. 



Proceedings of the American Philosophical Society, 1870, p. 416. 



Pneumatarthrtjs peloreus, Cope, /. c. 



Young IHadrosaurus, Leidy, Cretaceous Reptiles of the United States, p. 100, Plato XIII, figs. 

 27-28. 



Greensand ?No. 4, Monmouth County, New Jersey. 

 TOXOCHELYS, Cope. 



Proceedings of the Academy of Natural Sciences, Philadelphia, 1873, p. 10. 



Toxocfielys latiremis, Cope, I. c. Plate VIII, flgS. 1, 2. 



^Cynocercus incisus, Cope, I. c, 1872, p. 129 ; Leidy, Report of the United States Geological 

 Survey of the Territories, I, p. 279, Table XXXVI, figs. 17-21. 



Niobrara Cretaceous of Kansas. 



CYNOCERCUS, Cope. 



Proceedings of the American Philosophical Society, 1872, 308. 



Cynocercus incisus, Cope, /. c. Plate VIII, figs. 3-5. 

 Niobrara Cretaceous of Kansas. 



TRIONYX, Geoifr. 

 Trionyx foveatus, Leidy. 



Proceedings of the Academy of Philadelphia, 1850, 73 ; Transactions of the American Philo- 

 sophical Society, 1800, 148, Table XI, figs. 1-2. 



Fort Union epoch of Judith River, Montana. 

 Trionyx vagans. Cope. Plate VI, figs. 13, 14. 



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



Fort Union epoch of Colorado, Montana, and Nebraska. 

 Trionyx priscus, Leidy. 



Proceedings of the Academy of Natural Sciences, 1851, p. 329; Cretaceous Reptiles of tho 

 United States, 1S65, 113, Plate XYIII, fig. 9. 



Greensand, No. 4, of New Jersey. 



