PLATE 76. 



Romingeeia umbellifera. Devonian. 



1. Real' lateral view of verticillate umbels, showing spinulous inner- 



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

 of the author. 



Romingeria ixcrustaxs, Nov.'Spec. Devonian. 



2. Corallum incrusting Zaphrentis gregaria, from the Middle Devonian, 



Falls of the Ohio. Collection of Mr. Gaines. 



Aulopora edithaxa. Devonian. 



3. Corallum attached to Favosites hemisphericus, from the Middle 



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



Syrixgopora hisixgeri. Devonian. 



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



Syrixgopora stramixea, 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 partly imbedded in matrix, from the Lower Devonian 



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



