3 



11 



FIG. 106. Skeleton of Frog. Natural size. (After Duges) 



1, skull; 2, vertebral column; 3, urostyle; 4, scapula; 5, hmnerus; 6, radius and 

 ulna; 7, carpus; 8, metacarpals ; 1), phalanges of fore leg; 10, pelvic girdle; 

 11, femur; 12, tibia and fibula; 13, tarsus; 14, metatarsals ; 15, phalanges of 

 hind leg ; 16, rudimentary toe 



332 



