THE SKELETON OF THE FROG. 



51 



Fig. 8. The skeleton of the frog, seen from the dorsal surface ; the left 

 suprascapula and scapula have been removed. 



a, astragalus : c, calcaneum : d, suprascapula : e, exoccipital : /, femur- 

 fp, frontoparietal : gr metarcarpals : h, humerus : i, ilium :k, metatarsals- 

 I, carpus : m, maxilla : 71, nasal : o, pro-otic : p, pterygoid • V7n me- 

 maxilla: q, quadratojugal: r radio-ulna : -s, squamosal: sersphenethmoid: 

 s.v, sacral vertebra : t, tibio-fibula : u, urostyle 



