PLATE 116. 



Diphyphyllum conjuxctum, Nov. Spec. Devonian. 



1. View of the upper surface of a corallum, from the Middle Devo- 



nian rocks, Falls of the Ohio. 



2. View of the upper surface of a corallum, showing the up-springing 



of young corallets from the floors of the polygonally compressed 

 older calyces; from the ferruginous clay of the upper strata of 

 the Middle Devonian, Falls of the Ohio. 



3. Vertical section of a fragment, from the horizon and locality of the 



preceding specimen. 



Diphyphyllum bellis, Nov. Spec. Devonian. 



4. Oblique view of the upper surface of a corallum, from the upper 



rock strata of the Middle Devonian, Falls of the Ohio. 



Collection of the author. 



