XX11 



ORDER. 



5 NATATORES 

 (Swimmers) 



Classified List of 

 TRIBE. 



FAMILY. 

 34 Anatidce. Ducks 





35 Colymlidce. Divers. 



36 Alcadw. Auks 



37 Pelicanidce. Pelicans 



38 Laridce. Gulls. 



