PLATE 12. 
FAVOSITES EPIDERMATUS. Devonian. 
1. Upper surface of a corallum from the ferruginous clay of the Middle 
Devonian, near Louisville. Collection of the author. 
FAVOSITES RADIATUS. Devonian. 
2. Upper surface of a corallum from the Lower Devonian strata, Falls 
of the Ohio. Collection of the author. 
FAavVOSITES EMMONSI. ; Devonian. 
3. Lateral view of a corallum from the Lower Devonian, Falls of the 
Ohio. Collection of the author. 
4. Upper surface of a corallum from the same horizon and locality. Col- 
lection of the author. 
