PLATE 92. 



Cyathophyllum colligatum. Devonian. 



1. Vertical section of specimen Fig. 2, Plate 91. 



Cyathophyllum halli. Devonian. 



2. Calyx of corallum Fig. 1, Plate 77. 



3. Calyx of a corallum of medium size, bell-shaped, from the red clay of 



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



Cyathophyllum multigemmatum, Nov. Spec. Devonian. 



4. Three small inosculated gems fortuitously detached from the inferior 



corallet; from the Middle Devonian waste, Lincoln county, Ken- 

 tucky. Collection of Mr. Linney. 



