PLATE 81. 



Cyathophyllum rociLLUM, Nov. Spec. Dewnian. 



1. Central view of a rapidly expanding corallum. Collection of Mr. 



McConathy. 



2. Central view of a corallum of typical size and shape. Collection 



of the author. 



3. Calyx of a corallum. Collection of the author. 



5. Corallum of gigantic dimensions, with oblique section of the calyx- 

 wall, showing the sub-vesicular cellulose tissue of the interloculi. 

 Collection of the author. 

 Found in the red clay of the Middle Devonian, near Louisville. 



Blothrophyllum corium, Nov. Spec. Devonian. 



4. Right lateral view of corallum, with ai)ex flattened by attachment 



to an extraneous object, from the Middle Devonian red clay, 

 near Louisville. Collection of the author. 



