228 



OSTEICHTHYES 



\ Polypterim. 



V CoeiacanrhmT 

 Qsteolepidori; ; 



Teleosromi* 

 Osfeichrhyes " 



DIAGRAM III. 



Diagram illustrating the Phylogeny of the Osteichthyes, and the distribution of the 

 Families in the geological strata. 



