PLATE 94 



AcROPHYLLUM ONEiDAENSE. Devonian. 



1. (Oblique) anterior, or central-gap view of a corallum of average 



size, with calyx wall broken so as to show the cone-shaped 

 diaphragm ; from the Lower Devonian, Falls of the Ohio. 



2. Right lateral view (prostrate) of a small corallum, more conical 



than the typical specimens. From the horizon and locality of 

 the preceding example. 



AcROPHYLLUM ELLiPTicuM, Nov. Spcc. Devonian. 



3. Anterior, or central-gap view of a corallum, with wall removed so 



as to show the bottom of the calyx; from the horizon and place 

 of C. oneidaense. 

 The specimens belong to the collection of the author. 



