PLATE 80.— Continued. 



Cyathophyllum gkeeni, Nov. Spec. Devonian. 



14. View of the calyx of a corallum, from the Middle Devonian, Falls 



of the Ohio. 



s 



Xicholsonia canadensis. Devonian. 



15. Corallets attached to Stromatopora, from the Middle Devonian, 



Falls of the Ohio. 



Nicholsonia angtjlata, Nov. Spec Devonian. 



16. Corallum incrusting Stromatopora texilis, from the blue clay of the 



Middle Devonian, Falls of the Ohio. 



Cyathophyllitm multigemmatum, Nov. Spec. Devonian. 



17. View of confluent calyces of corallets, from the Middle Devonian 



waste, Marion county, Kentucky. 



Zapheentis 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. 



