PLATE 28, 
Favosites munpvs, Nov. Spee. Devonian. 
1. Upper surface of a corallum from the ferruginous clay of the Middle 
Devonian, near Louisville. Collection of the author. 
2. Lateral view of a corallum, the tubes of many of whose corallets are 
closed with opercula; from the blue clay of the Middle Devonian, 
Falls of the Ohio. Collection of the author. 
FavosiITES proximus, Nov. Spec. Devonian. 
3. Lateral view of a sub-ramous corallum, in some of whose tubes 
appear imperfect opercula; a basal expansion of Favosites clausus 
is attached to its upper portion; from the Lower Devonian strata, 
Falls of the Ohio. Collection of the author, 
