PLATE 8. 
FAVOSITES FAVOSUS. Niagara. 
1. Upper surface of a fragment from the ferruginous clay, near Louis- 
ville. Collection of Mr. Nettelroth. 
2. Longitudinal section of an example whose corallets are smaller, found 
in the same horizon and locality. Collection of the author. 
FAVOSITES NIAGARENSIS. Niagara. 
3. Upper surface of a corallum, composed of very small corallets, show- 
ing spinulous walls; near Louisville. Collection of the author. 
4. Upper surface of an example, composed of the largest sized corallets, 
with smooth walls; near Louisville. Collection of the author. 
Favosites FORBESI. Niagara. 
5. Upper surface of a large corallum found near Louisville. Collection 
of Mr. McConathy. 
6. View of epithecated under surface of a corallum of average size; near 
Louisville. Collection of the author. 
FAVOSITES SPONGILLA. Niagara. 
7. 8. 9. Lateral views of coralla found near Louisville. Collection of 
the author. 
