126 EXPLANATION OF THE PLATES. 



PLATE XX, 



Figures half the diameter of nature. 

 Tcstudo licrnhplierica. 

 Fig. 1. Dorsal view of the carapace. 

 Fig. 2. View of the sternum. 



Figures half the diameter of nature. 

 Testudo OiBcnL 



Fig. 1. Dorsal view of the carapace. 

 Fig. 2. View of the sternum. 



PLATE XXI. 



PLATE XXII. 



Figures one-third the diameter of nature. 

 Testudo Culhertsonii. 

 Fig. 1. Dorsal view of the carapace. 

 Fig. 2. View of the sternum. 



PLATE XXIII. 



Figures one-fourth the diameter of nature. 

 Testudo lata. 



Fig. 1. Dorsal view of the carapace. 

 Fig. 2. View of the sternum. 



PLATE XXIV. 



Fig. 1. One-fourth the diameter of nature; the remaining figures one-third. 

 Fig. 1. View of the left side of the carapace of Testudo lata. 

 Fig. 2. View of the left side of the carapace of Testudo CuJbertsonii. 

 Fig. 3. View of the left side of the carapace of Testudo hemispherica. 

 Fig. 4. View of the left side of the carapace of Testudo Oweni. 



PUBLISHED BY THE SMITHSONIAN INSTITUTION, 

 WASHINGTON, D. C. 



JUNE, 1853 . 



