114 PROCEEDINGS OF THE ACADEMY OF [April, 



Maoroolemmys Gray (Cat. Sh. Kept., I, p. 48, 1855). 



Monotype Chelonura temminckii Holb. 

 = Macrochehjs Gray (1856). Same type. 



OINOSTERNID^. 



Cinostemum Spix (Spec Nov. Test., p. 17, 1824). 



Founded upon Kinosternon longicaudatum and K. hrevicaudatum. 

 Both being synonyms of Testudo scorpioides Linn., the genus is mono- 

 typic. 



> Thyrosternum Agass. (1857). Type Cinostemum pennsylvanicum. 



> Plafythyra Agass. (1857). Type Cinostemum flavescens. 



Sternothoerus Gray (Ann. of Philo.s., 1825, p. 193). 



Type by ehmination S. odoratus Daudin. Also by designation of 

 Fitzinger {Syst. Rept., p. 29, 1843). 



Stemothceriis as cited by Gray from Bell's manuscript contained S. 

 odorata and S. pennsylvanica. The last belonging strictly to Cino- 

 stemum Spix, odorata becomes the type. This use of the name ante- 

 dates by a short time Sternothoerus Bell (Zool. Jour., 11,305, 1825). 

 Aromochelys Gray (1855) also has odorata for type. 



TESTUDINID^. 



Chrysemys Gray (Cat. Tort., p. 27, 1844). 



Founded on Emys picta Schweig. and E. belli Gray. Gray retained 

 ■picta as the type {Proc. Zool. Soc. Lond., 1869, p. 191). 



> Pseudemys Gray (1855). Type Pseudemys concinna. 



> Ptychemys Agass. (1857). Type Ptychemys concinna. 

 '^ Trachemys Agass. (1857). Type Trachemys scabra. 



> Deirochelys Agass. (1857). Type Deirochelys reticulata, 

 y- CaUichelys Gray (1863) . Type Emys ornata. 



Halaooolemmys^ Gray (Cat. Tort., p. 27, 1844). 



Monotype Testudo concentrica Shaw (= Testudo terrapin SchoepfT). 



> Graptemys Agass. (1857). Type Graptemys geographica. 

 Clemmys Ritgen (Nova Acta Acad. Leop. Car., XIV, pt. 1, 272. 1828). 



Type by elimination Emys punctata ( = Testudo guttata Schn.). 



= Chelopus Rafin. (1832). Same type. 

 = Nanemys Agass. (1857). Same type. 



> Calemys Agass. (1857). Tj-pe Calemys muhlenbergi. 



> Giyptemys Agass. (1857). Type Glyptemys insculptus. 



> Actinemys Agass. (1857). Type Actinemys marmorata. 



Emys Oppel (Ord. Fam. Rept., p. 11, 1811).= 



Oppel cited three species : 



' Written Malaclemys by Gray, but stated by him to be a mistake. 

 ^Emys Dum^ril {Zool. Anal, p. 76, 1806) 'is not used in a properly generic 

 sense and has no standing. 



