PLATE 123. 
STROMBODES PYGMEUS. Niagara. 
1. View of the upper surface of a corallum, from the white clay of 
the Upper Niagara, near Louisville. Collection of the author. 
STROMBODES INCERTUS, Nov. Spec. Niagara. 
2. View of the upper surface of a corallum, from the Upper Niagara 
red clay, near Louisville. Collection of the author. 
STROMBODES SINEMURUS, Nov. Spec. Niagara. 
3. View of the upper surface of a corallum, from the Upper Niagara 
red clay, near Louisville. Collection of Mr. McConathy, 
STROMBODES MAMILLARIS. Niagara. 
4. View of the upper surface of a small corallum, from the Upper 
Niagara red clay, near Louisville. Collection of the author. 
