46 'HE SKELETON OF THE FROG. 
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ae 
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Fig. 7. The skeleton of the frog, seen from the dorsal surface: the left 
suprascapula and scapula have been removed. 
a, astragalus: c, caleaneum: d, suprascapula; e, exoccipital: f, femur: 
fp, frontoparietal: g, metacarpals: h, humerus: 7, ilium: k, metatarsals : 
l, carpus: m, maxilla: n, nasal: 0, pro-otic: p, pterygoid: pm, premaxilla : 
q, quadratojugal: 1, radio-ulna: s, squamosal: se, sphenethmoid: s.v, 
sacral vertebra: ¢, tibio-fibula : uw, urostyle. 
