13 



EMYS TERRAPIN.— Schoepf. 



Plate II. 



Characters. Shell oval, nearly entire, slightly emarginate posteriorly; de- 

 pressed; obtusely carinate; dusky olive-green, and marked with darker concentric 

 lines. 



Synonymes. Testudo terrapin, Schoepf, Hist. Test., p. 64, tab. 15. 

 La Terrapene, Lace])., Quad. Ovip., torn. i. p. 129. 

 Testudo centrata, Lair., Hist, des Rep., torn. i. p. 145. 

 Testudo concentrica, Shaw, Gen. Zool., vol. iii. p. 43, pi. ix. fig. 1. 

 Testudo centrata, Daucl., Hist. Nat. des Rept, torn. ii. p. 155. 



La Tortue a lignes concentriques, Bosc, Nouv. Diet. d'Hist. Nat, torn, xxxiv. p. 264. 

 Emys centrata, Merrem., Versuch. eines Syst. der Rept., p. 26. 

 Emys centrata, Schweig., Prod. Arch. Konigb., vol. i. p. 301. 

 Emys centrata, Say, Jour. Acad. Nat. Scien. Phil., vol. iv. p. 205. 

 Emys centrata, Fitz., Neue Class, der Rep., p. 45. 

 Emys centrata, Harlan, Med. and Phys. Res., p. 152. 

 Testudo palustris, Le Conte, Ann. Lye. Nat. Hist., N. Y., vol. iii. p. 113. 

 Emys concentrica, Gray, Synop. Rept., p. 27. 



Emys concentrica, Bum. and Bibr., Hist. Nat. des Rept, torn. ii. p. 261. 

 Salt-water Terrapin, Vulgo. 



Description. The shell is oval, almost entire, or slightly emarginate behind, 

 depressed, and obtusely carinate. The vertebral plates are five in number; the 

 anterior is the largest pentagonal, with its two shortest margins directed forwards; 

 the second, third and fourth are hexagonal, the latter very irregularly so, its pos- 

 terior margin being much the smallest; the fifth is heptagonal: each of these 



