34 REPTILES. 



a. Dry animal and much eroded shell. N. America. 



g. Shell and stuffed animal. Presented hy H. Doubleday, Esq. 



b. Shell only, wanting hind lobe of sternum. 



e. d. In spirits. Young. Shell black, white-spotted beneath. Ani- 



mal grey-brown, white-dotted, head white-lined. East Florida. 

 Presented by Edward Doubleday, Esq. 

 e.f In spirits. Like c and d. Presented by Capt. Sir Edward 

 Belcher, R.N., C.B. 



The Stink-Pot. Kinosternon odoratum, Gray, Syn. R. 35, 

 t. 6,/. 1. Bonap. Osser. 168. Testudo o. Latr. R. i. 122. Duud. 

 R. ii. 189, t. 24, /. 3. Say, J. Acad. N. S. Phil. iv. 206, 216. Bell, 

 Zool. Journ. ii. 299. Ho'lbrook, N. A. Herpet. iii. 29, t. 4. Tes- 

 tudo Pennsylvania, var. Schoepf. 110, t. 24, /. B. T. glutinata, 

 Daud. R. ii. 194, t. 24, /. 5? Terrapene Boscii, Merrem, Tent. 23? 



Shell ovate, keeled, sides sloping, pale brown, gular plate mi- 

 nute ; sternum very narrow, truncated behind, symphysis elongate 

 very narrow ; " head with a brown lateral line ; chin with several 

 small warts, neck and throat papillary ; tail simple ; fore arm with 

 three folds or large scales in front." 



a. Shell only. N. America. 



c. Sternum very narrow, cross -shaped, acute behind and before, 

 front lobe mobile. Staurotypus, Wagler. 



The Cross Emys. Kinosternon triporcatum, Gray, Syn. R. 

 76. Terrapene t. Weigm. Ms, 1828, 364. Wagler, Syst. 137, t. 5, 



f. 44,45. Icon. t. 23. bum. et Bib. E. G. ii. 356. 



Shell oblong, convex, brown, three-keeled, the central one ve- 

 ry large, high and cultrate behind, side ones highest in front; ver- 

 tebral plates long, imbricate, nuchal plates short, broad ; edge in- 

 dented on the side, expanded and toothed behind; head depressed 

 spotted and lined with white, chin 2-bearded ; neck thick. 

 a. Young, in spirits. Pale brown varied with black. Mexico. 



7. Chelydra, Schw. Emydosaura, Dum. et Bib. 

 Head very large rugose covered with a hard skin ; chin 2-beard- 

 ed ; neck very thick, tubercular. Limbs large and strong, tuber- 

 cular. Tail long, large, with a central longitudinal series of rather 

 compressed tubercles. Shell depressed, toothed behind. Sternum 

 slender, cross-like, acute at each end, centre coriaceous. Sternal 

 plates 5 pair, very thin, skin-like, the narrow lateral prolongation 

 of the sternum covered by a peculiar plate, (perhaps the removed 

 abdominal). America. 



The Alligator Terrapin. Chelydra serpentina, Gray, Syn. 

 R. 36. C. Lacertina, Schweigr. 293. Testudo serrata, Penn. {not 

 Shaw). Cat. Liverpool Mus. t. T. Serpentina, Linn. S. N. 351. 

 Schoepf. t. 6, (young). Daud. R. ii. 98, t. 20, /. 2. Shaw, Zool. I. 



