PLATE 76. 



RoMiXGERiA UMBELLiFERA, Devonian. 



1. Rl^ui" lateral view of verticillate umbels, showing spinulous inner- 



Avalls, from the Lower Devonian, Falls of the Ohio. Collection 

 of the author. 



RoMiNGERiA INCRUSTANS, Xov, Spec. Devonian. 



2. Corallum iiicrustiiig Zaphrentis gregaria, fi^om the Middle Devonian, 



Falls of the Ohio. Collection of Mr. Gaines. 



AuLOPORA EDiTHANA. Devonian. 



3. Corallum attached to Favosites hemisphericus, from the Middle 



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



Syringopora hisingeri. Devonian. 



4. Lateral view (inverted) of example figured in Plate 68, Fig. 1. 



Syringopora straminea, Nov. Spec. Devonian. 



5. Upper surface of corallum, from the Lower Devonian rocks, Falls of 



the Ohio. Collection of the author. 



Cladopora desquamata, Nov. Spec. Devonian. 



6. Corallum j)artly imbedded in m.atrix, from the LoAver Devonian 



rocks. Falls of the Ohio. Collection of the author. 



