PLATE 122. 



Strombodes striatus. Niagara. 



1. View of the upper surface of a corallum, from the Upper Niagara 



white clay, near Louisville. Collection of the author. 



2. View of a vertical section of a weathered corallum, from the Upper 



Niagara red clay, near Louisville. Collection of the author. 



Strombodes quadrangularis, Nov. Spec. Niagara. 



3. View of the upper surface of a corallum, from the lower strata of 



the Upper Niagara red clay, near Louisville. Collection of the 

 author. 



Strombodes iwicus, Nov. Spec. Niagara, 



5. Lateral view of a corallum, from the Upper Niagara red clay, near 



Louisville. Collection of Mr. Nettelroth. 



Strombodes sinemurus, Nov. Spec. Niagara. 



4. View of the upper surface of a corallum, from the Upper Niagara 



white clay, near Louisville. Collection of the author. 



6. View of the upper surface of a corallum, from the red clay of the 



Upper Niagara, near Louisville. Collection of Mr. Nettelroth. 



