1908.] NATURAL SCIENCES OF PHILADELPHIA. 115 



"Sterno antice mobile — E. lutaria." 



''Sterno cmciforme j '^'P'^'f,^;; ^^f ^/'" ^^ ^^^^^ 

 ( longicoUis < Chelodina Fitz., 1826. 



Emys lutaria was also designated as the type by Fitzinger in 1843, 

 under the name of Emys europcea Schw. 



= Ermjdoidea Gray (1870). T>T)e Emys Blandingii. 

 Ttrrapene Merrem (Tent. Syst. Amph., p. 27, 1820). 



Type T. clausa Merr. ( = Testudo Carolina Linn.). By designation of 

 Gray (Ann. of Philos., X, 1825, p. 192). 



Cistudo Fleming (Phil. ZooL, II, p. 270, 1822), often used for these 

 turtles, is wanting in definition and in any case is an exact synonym 

 of Terrapene Merrem, two years its senior, both being founded on 

 Cuvier's "tortues a boite." 



Didicla Rafin. (Atl. Journal, 1832, p. 64) has T. dmisa for type and is 

 also a synonym. 



Testudo Linn. (Syst. Nat., Ed. X, p. 197, 1758). 



Type Testudo graeca Linn. By designation of Fitzinger (Syst. 

 RepL, 29, 1843). 



> Gopherus Rafin. (1832). Type Testudo polyphemus. 



> Xerobates Agass. (1857). Type Testudo herlandieri. 



CHELONID^. 



Chelonia Latreille (Hist. Nat. Kept., 1, p. 22, 1802). 



Type Testudo mydas Linn. By original designation. This genus is 

 often attributed to Brongniart (Bull. Soc. Philom., 11, p. 89, 1800). 

 In that place, however, it rests upon these words onl)% "G. Chelone- 

 Chelonia (ce sont les tortues de mer)," and is a nomen nudum. 



Caretta Rafin. (SpeccioSci. (Palermo), 11, 66, 1814). 



Monotype C. nasuta Raf. (= T. caretta Linn.). 

 Rafinesque's words are "Caretta nasuta Raf., Testudo caretta Linn." 

 = ThalassochelysY'iiz.{\S'ib). Same type. 

 Eretmoohelys Fitz. (Syst. Rept., p. 30, 1843). 



Type Chelonia imhricata Cuv. By original designation. 



TRIONYOHID^. 



Platypeltis Fitz. (Ann. Wien Mus., 1, pp. 120, 127, 1835). 



Type Platypeltis ferox Schweig. 



The two species named by Fitzinger, Trionyx brongniartii Schw. and 



T. ferox Schw. are identical, and the genus is therefore monotypic. The 



same species was designated by Fitzinger (Syst. Rept., 30, 1843). 



Amyda Oken (1816). Type Trionyx euphraticus. 

 Aspidonectes Wagl. (1830). Type Trionyx cegypticus. 



