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PLATE 24. 



Favosites frutex, Nov. Spec. Devonian. 



1. Lateral view of a corallum from the Lower Devonian strata, Falls of 



the Ohio. Collection of the author. 



2. Upper portion of a frond from the same place and horizon. Collec- 



tion of the author. 



Favosites cristatus, varietas major. Niagara. 



3. Lateral view of a fragment with squamous walls, from the white clay 



of the upper Niagara strata, near Louisville. Collection of Mr. 

 ^McConathy. 



Favosites impeditus, Nov. Spec. Devonian. 



4. 5. Lateral views of coralla from the Lower Devonian strata, Falls of 



the Ohio. Collection of the author. 



Favosites clelandi, Nov. Spec. Devonian. 



6. View of a portion of the upper surface of a corallum from the Lower 

 Devonian, Falls of the Ohio. Collection of the author. 



