66 



GENERAL ZOOLOGY 



composed of three bones, the scapula, clavicle, and coracoid, 

 which meet at the shoulder. The scapula extends dorsally from 



prcmaxillary 

 mento-Meckelian 

 vomer 

 palatine 

 dentary 

 Sphen- ethmoid 

 parasphenoid 

 Squamosal 

 anguloire 

 pterygoid 

 exoccipilal 

 Suprascapula 

 scapula 

 clavicle 

 glenoid- fossa 

 - coracoid 

 sternum 

 xiphiiternum 



'hum. 



CCtrpals, 



uro style 



acetoibulum. 



-pubis 



ischium 



calcaneum 



Fig. 40. — Skeleton of Rana catesbeiana, ventral view. A lateral view of the 

 left half of the pelvic girdle is shown on the right. 



the shoulder and at its distal margin is attached to the broad and 

 flat cartilaginous swprascapula, most of which is calcified. The 



