52 REPTILES. 



a. Stuffed, adult. England ; coast of Dorsetshire. 



b. Stuffed, adult, (not good state). West Indies ; Nevis. Pre- 



sented by W. Cottle, Esq. 



c. In spirits, young. Thorax covered with a rather cracked skin, 



fore feet nearly as long as the shell. 



Test, tuberculata, Gravenh. Delic. t. — Phil. Trans, lxi./. 

 4, 5. Schoepf. t. 29. Dermatochelys porcata, Wagler, Syst. 

 133, t. 1,/. 1,23. 



2. Caouana, Gray. Thalassochelys, Fitz. 



Thorax ovate, cordate, covered with 15 thin, truncated, not 

 imbricated shields, which are keeled in the young. Head large. 

 Jaws slightly curved towards each other at the tip; side of the 

 lower jaws covered with angular plates. Marginal plates 27 (rare- 

 ly 25). Carnivorous, eating Mollusca and Crustacea. 



The additional pair of discal shields occupies the side of the 

 narrow first vertebral shields, the three covering the space occupi- 

 ed by the broad front vertebral shield of Chelonia. 



The Caouanne or Loggerhead. Caouana Caretta. Testudo 

 Caretta, Linn. S. N. 351. Walb. Chelon. 4, 95. Schoepf. t. 16, t. 

 16 B. Shaw, Zool. ii. t. 23—25. Schoepf. L 17, f. 3. T. cephalo, 

 Schn. Schildk. 303. Tern. F. Japon. 25, t. 4, /. 1, 2, t. 6, /. 3. 

 T. Caouana, Bechst. in Lacep. i. 110. Daud. Rept. ii. 54, t. 16./. 

 2. Schiveig. Prod. 292. Wagler, Syst. 133, 1. 1, /. 1, 23. Gray, 

 Syn. R. 53. Dum. et Bib. E. G. ii. 544. Ch. virgata, Wagler, 

 Icon. t. 29, (not Cuv.) Ch. pelagiorum, Vallenc. Rept. Morea, t. 

 10. Testudo corticata, Rondel. T. marina Caouanna, Ray, Qu. 

 257. The loggerhead turtle, Brown, Jam. 465. Catesby, Carol, ii. 

 40, t. 40. La Caouanne, Labat, Voy. Amer. i. 184, 311. Lacep. 

 Q. O. i. 96. Test, nasicornis, Lacep. Edw. Birds, t. 206. Rhi- 

 nocerus turtle, Shaw, Zool. t. 14, very young. 



Claws two on each foot ; back convex, rounded, toothed be- 

 hind; vertebral plates 6-sided, keeled, rather longer than wide; 

 caudal plate squarish, longer than broad, hinder marginal plate 

 rather wider than the rest; costal shields of young keeled above. 



a. In spirits, half grown. Costal shield keeled above, margin 



toothed. 



b. Back shield, half grown animal. Costal shield smooth. 



c. Adult, stuffed. Back covered with Chelonobia : hinder margi- 



nal plates less acute, caudal plate elongate, subtriangular. At- 

 lantic Ocean. 



d. Half grown, stuffed. Hinder marginal plates acute, rather 

 produced, caudal scarcely elongated. Atlantic Ocean. 



