CLASS OF BEPTILES. 



317 



as in the land tortoise; sometimes they terminate in 

 slender fingers, as in the lizard ; and at other times the ex- 

 tremity of the fingers and toes are broadened out, as in the 

 gecko (Fig. 275) ; and being provided with short cutaneous 



Fig. 274. Skeleton of the Tortoise.* 



folds performing the office of suckers, they enable this hideous 

 animal to creep along the smoothest walls, and even along the 

 ceiling. 



* Skeleton of the Tortoise ; the plastron has been removed : re, cervical 

 vertebrae ; vd, dorsal vertebrae ; c, ribs ; cs, sternal ribs, the marginal 

 bones of the carapace: o, scapula; cl, collarbone; co, coracoid bone ; b, 

 pelvis ; /, the femur ; t , tibia ; p, fibula. 



