PLATE 74, 
AULOPORA SERPENS. Devonian. 
1. (Upper left-hand specimen.) Corallets incrusting under surface of 
Stromatopora texilis, from the Lower Devonian rocks, Falls of the 
Ohio. ‘ 
2. Cornilets incrusting a fragment of Favosites, from the Lower Devo- 
nian red clay, near Louisville. 
DRYMOPORA INTERMEDIA. Devonian. 
3. View of the corallum figured in Plate 72. 
4. Basal corallets attached to a fragment of Favosites canadensis, from 
the Lower Devonian rocks, Falls of the Ohio. 
RoMINGERIA INCRUSTANS, Nov. Spec. Devonian. 
5. Corallets incrusting a frond of Cladopora cryptodens, from the Lower 
Devonian, Falls of the Ohio. 
Diorycuorora (Nov. Gen.) TENUIs, Nov. Spec. Niagara. 
6. Corallum (inverted) from the Upper Niagara white clay, near Lou- 
isville. 
DRYMOPORA FASCICULARIS. Devonian. 
7. Fragment from the Lower Devonian, Falls of the Ohio. Collected 
by Dr. Theiss. 
CLADOPORA FRANCISCI. Devonian. 
8. Upper fronds of a corallum from the Lower Devonian, Falls of the 
Ohio. 
The specimens herein figured are from the collection of the author. 
