PLATE 117. 
DIPHYPHYLLUM COALESCENS, Nov. Spec. Devonian. 
1. View of the upper surface of a corallum, from the upper rock strata 
of the Middle Devonian, Falls of the Ohio. 
DIPHYPHYLLUM COAGULATUM, Nov. Spec. Devonian. 
2. View of the upper surface of a corallum, from the horizon and 
neighborhood of the preceding species. 
Collection of the author. 
