<.'l]"ULYT)It"rrUR. 



135 



ever, regarded by Boulcuger x as an abnormal and not a generic 

 character. 



Chelydra serpentina. — Carapace and plastron ; reduced. (From Boulenger's 

 ' Catalogue of Chelonians.') 



Chelydra murchisoni 9 Bell 2 . 



Syn. Chelydra ceningensis, Meyer 3 . 

 Clemmys (?) karyi, Fitzinger 4 . 

 Hydraspis (?) ceningensis, Fitzinger 5 . 



Tail long ; carapace widest at a point posterior to its junction 

 with the plastron ; epiplastrals large and slightly divergent : outer 

 extremity of hyoplastral produced anteriorly at its junction with 

 the carapace to an equal extent with that of the hypoplastral ; 

 xiphiplastrals acute. 



Allied to the existing C. rossignonii G of Mexico. 



Hub. Europe (Switzerland). 



1 Catalogue of Chelonians, &c. p. 12, note. 



2 Trans. Geol. Soe. ser. 2, vol. iv. pt. ii, p. 380 (1836). 



3 Fauna der Yorwelt — Saugeth. aus dem Molasse; p. 12 (1845). Quoted as 

 Bell, Proc. Geol. Soc. vol. i. p. 342 (1832), where the name does not occur. 



1 Ann. Mus Wien, vol. i. p. 127 (1835). 5 Loc. tit. 



6 See Boulenger, ' Catalogue of Chelonians,' &c. p. 23. 



