PLATE 70. 



Drymopora (Nov. Gen.) fascicularis. Niagara and Devonian. 



1. Lateral view (inverted) of a fragment from the Upper Niagara white 



clay, near Louisville. 



2. Base of a corallum attached to Stromatopora concentrica; from the 



Upper Niagara red clay, near Louisville. 



3. Portion of a corallum invested by Stromatopora, from the ferruginous 



clay of the Lower Devonian, near Louisville. 



4. Portion of a corallum similarly inclosed, from the manganese lime- 



stone of the Lower Devonian, Falls of the Ohio. 



Drymopora commensalis, Nov. Spec. Devonian. 



5. Vertical section of a corallum growing in commensality with Stro- 



matopora texilis, as it is the habit of the species to do with some 

 form of Stromatopora ; most of the corallets appear larger than 

 their proper size because of their investiture ; from the manganese 

 limestone of the Lower Devonian, Falls of the Ohio. * 



6. 7. Upper surfaces of coralla, the orifices of the corallets showing at 



the surfaces of the sarcodemes; from the ferruginous clay of the 

 Lower Devonian, near Louisville. 

 All from the collection of the author. 



