52 



COMPARATIVE ANATOMY. 



FIG. 38. VENTRAL PORTION OF THE PECTORAL ARCH OF Rana 



St, bony, and A"n, cartilaginous sternum (xipliistemum) ; S, scapula; KC, carti- 

 laginous portion between the latter and the clavicle (Cl) ; Co, coracoid; Co 1 , 

 epicoracoid ; m, line of junction K-twpen the two epicoracoids ; fl, glenoid 

 cavity for the humerus ; Fe, fenestra between the coracoid and clavicle ; Ep, 

 omosternum. 



FIG. 39. PECTORAL ARCH AND STKIINUM OF A GECKO 

 (Hemidactylus verrucosus). 



>SV, sternum ; 7?, ril>s ; Si, cartilaginous cornua to which tho ]-.\>{ p; t ir of ribs is 

 attached; ,s'.s', suprascfipula ; S, scapul.-i : Co, rora'-mM : Co*, cartilaginous 

 epicoraeoM ; Ep, iiiti-n-liivii-li- : n, A, c, iiii'inbrniKni 1" nrsln^ in the coracoid ; 

 < 'I, clavicle : '/. glrnoid Cavity for h 



