49 



EMYS SERRAT A.— Daudin. 



^ Plate V. 



Characters. Shell sub-round, convex, carinate, longitudinally rugous, deeply 

 serrated posteriorly; dark brown, with sub-radiating yellow lines; jaws entire. 



SrNOPfYMEs. Testudo serrata, Dmidin, Hist. Nat. des Rep., torn. ii. p. 148, pi. xxi. figs. 

 1 and 3. 

 La Tortue a bords en scie, Bosc, Nouv. Diet. d'Hist. Nat, torn, xxxiv. p. 264. 

 Emys serrata, Merrem, Versuch eines Syst. der Amphib., p. 26. 

 Emys serrata, Schtveigger, Prod. Arch. Kbnigsb., vol. i. p. 301. 

 Testudo serrata, Leconte, Ann. Lye. Nat. Hist. N. Y., vol. iii. p. 105. 

 Emys seripta. Gray, Synop. Rept., p. 29. 



Emys serrata, Dumeril et Bibron, Hist. Nat. des Rept, tom. ii. p. 267. 

 Yellow-bellied Terrapin, Vulgo. 



Description. The shell is nearly round, very convex, emarginate in front, 

 and deeply serrated behind, longitudinally wrinkled, of a dark brown colour, 

 almost black, with yellow lines and marks. The vertebral plates are five in 

 number; the first is tetragonal, narrowest in front, with its lateral borders arched 

 outwards, which gives it an urceolate form; the second, third and fourth, are 

 hexagonal, the latter very irregularly so, with its posterior border re-entering; 

 the fifth is triangular, with its apex truncated, and received into the fourth, and 

 its basis rounded and cut into four sides. Each vertebral plate has a marked 

 prominence, elongated in the antero-posterior direction; these protuberances, 

 when united, form a strong carina along the spine; besides these prominences, 

 each plate, lateral as well as vertebral, is strongly marked by longitudinal 

 Vol. I.— 7 



