VEETEBEATA 



83 



Subclass II.— AVES. 

 There are two superorders of the birds as follows : 



Metacarpal and carpal bones all distinct, the 

 digits with ungues ; caudal vertebrse 

 numerous, unmodified ; clavicles united ; 

 pelvic elements distinct ; teeth present ; Saururse. 





Via.ZO.—Archceopteryx lUhographica Wagn. From Middle Oolite of Bavaria 

 much reduced. From Dames. 



