27 



blastematic clavioular formation with the scapiila-coiacoid. Otliers 

 again of the results found in Lacerta could not he further veritied, 

 namely, the formation of each episteriuim half connected with the 

 formation of the homolateral clavicula. 



After the casuistic description in the above lines, I shall now 

 with the help of figs. 5 and 6 sumiiiaiize the development of the 

 skeleton parts. 



In Lacerta, as well as in Gongylus and Ptj'chozoon the cora- 



Clo-i/Ct"^"'- 



\ Coracoidtam 

 "^ brtmitivum. 



Cla^'itoVor 





Kc-ïcorac. 



\ I 



Fig. 5. Lacerta agilis. Schemata of the development of the coracoid. 



Claviculc 



CLclvlcwI 



!.lavtci.i.lc 



Fig. 6. Lacerta agilis. Schemata of the development of the secondary shoulder-girdle. 



