PLATE 71, 
DRYMOPORA NOBILIS. Devonian. 
1. Lateral view of a corallum from the Lower Devonian rocks, Falls 
of the Ohio. 
2. Upper surface of a corallum, from the same horizon and place. 
3. Upper surface of a corallum of procumbent habit; from the same 
place. 
4, Basal corallets of a young community, attached to Cyathophyllum 
halli; from the ferruginous clay of the Lower Devonian, near 
Louisville. 
Examples from the collection of the author. 
