PLATE 80.—Continued. 
CYATHOPHYLLUM GREEN], Nov. Spec. Devonian. 
14. View of the calyx of a corallum, from the Middle Devonian, Falls 
of the Ohio. 
NICHOLSONIA CANADENSIS. Devonian. 
15. Corallets attached to Stromatopora, from the Middle Devonian, 
Falls of the Ohio. 
NIcHOLSONIA ANGULATA, Nov. Spec Devonian. 
16. Corallum incrusting Stromatopora texilis, from the blue clay of the 
Middle Devonian, Falls of the Ohio. 
CYATHOPHYLLUM MULTIGEMMATUM, Nov. Spec. Devonian. 
17. View of confluent calyces of corallets, from the Middle Devonian 
waste, Marion county, Kentucky. 
ZAPHRENTIS IMMANIS, Nov. Spec. Devonian. 
18. Central view and oblique view of calyces of twin coralla, from the 
Middle Devonian clay, near Louisville. 
The examples figured in this plate belong to the collection of the 
author, 
