PLATE 108. 



Eridophyllum sentum, Nov. Spec. Niagara. 



1. Upper surface view of a corallum, from the Upper Niagara red 



clay, near Louisville. Collection of the author. 



Diphyphyllum bellis, Nov. Spec. Devonian. 



2. Upper surface view of a corallum, from the Middle Devonian red 



clay, near Louisville. Collection of the author. 



Diphyphyllum archiaci. Devonian. 



3. Lateral view of a corallum, from the dark-red clay derived from 



the encrinal limestone of the Upper Devonian, near Louisville. 

 Collected by Mr. Goodwin. 



