PLATE 26. 



Fayosites eximius, Nov. Spec. Devonian. 



1. Upper surface of a corallum from the dark red encrinal limestone clay 



of the Upper Devonian, near Louisville. Collection of the author. 



Favosites fustiformis, Nov. Spec. Devonian. 



2. Lateral view of a corallum, showing the tubes of some corallets in 



section and the epithecal secretion on the outside of walls where 

 new departures of growth occur; from the Lower Devonian, Falls 

 of the Ohio. Collection of the author. 



3. Lateral view of a corallum, with base incrusting a fragment of a 



frond of Cladopora expatiata; from the horizon and locality of 

 example 2. Collection of the author. 



