PLATE 50, 
CLADOPORA ASPERA. Devonian. 
1. Front lateral view of a corallum from the Lower Devonian rocks, 
Falls of the Ohio. -Collection of the author. ' 
CLADOPORA EXPATIATA. Devonian. 
2. Portions of fronds with part of pedicle, from the ferruginous clay of 
the Lower Devonian, near Louisville. Collection of the author. 
3. Front lateral view of a corallum (prostrate) from the Lower Devo- 
nian, Falls of the Ohio. Collection of the author. 
