Metazoa Rana. 303 



as carrying teeth. In front of the two nasals are two small 



FIG. 165. SKELETON OF FROG (DORSAL VIEW, WITH LEFT SCAPULA AND 

 SUPRA-SCAPULA REMOVED). (Milnes Marshall.) 



a, astragalus (tibiale) ; r, calcaneum (fibulare) ; d, suprascapula ; e, ex- 

 occipital ; f, femur ; fp, parieto-frontal ; g, metacarpals ; h, humerus ; 

 z", ilium; k, metatarsals ; /, carpus; ;, maxilla; , nasal; 0, prootic; 

 p, pterygoid ; /;//, premaxilla ; q, quadrato-jugal ; r, radi -ulna ; .<, 

 squamosal ; se, sphenethmoid ; sv, sacral vertebra ; t, tibio-fibula ; 

 , urostyle. 



bones, the premaxillge, which form the most anterior part 

 of the upper jaw. The premaxillse articulate with two bent 



