PLATE 19. 



Favosites quercus, Nov. Spec. Devonian. 



1. Lateral view of a coralluin of medium size from the Lower Devonia i, 



Falls of the Ohio. Collection of the author. 



Favosites ramulosus, Nov. Spec. Devonian. 



2. Views of two fronds from the upper portion of coralla from the Lower 



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



Favosites tuberosus. Devonian. 



3. Lateral view of a corallum of bacillate shape from the upper strata 



of the Lower Devonian, Falls of the Ohio. Collection of Mr. Net- 

 telroth. 



