PLATE 124. 
CYSTIPHYLLUM NIAGARENSE. Niagara. 
1. Left lateral view of an adult corallum. 
2. Anterior view of a gemmiferous corallum. 
3. Anterior view of a small corallum. 
Examples 1, 2, 3, are from the Upper Niagara red clay, near 
Louisville. 
4. View of the calyx and oblique anterior view of a small corallum. 
5. View of the calyx of an adult corallum, in which three of the 
four foveal gaps proper ¢. © yathophylloidea are conspicuous. 
Specimens 4 and 5 are from the white clay of the Upper Niagara, 
near Louisville. 
CYSTIPHYLLUM INCURVUM, Nov. Spec. Magara. 
6. Left lateral view of a small corallum, with denuded epitheca, from 
the Upper Niagara white clay, near Louisville. 
7. Posterior view of an adult corallum, from the Upper Niagara red 
clay, near Louisville. Collection of Mr. McConathy. 
8. Anterior view of a corallum, from the horizon and neighborhood of 
the preceding example. From the collection of Mr. McConathy. 
CYsTIPHYLLUM AMERICANUM. Devonian. 
9. Posterior view of a corallum of robust habit, with warped apical 
scar of attachment; from the encrinal limestone clay of the 
Upper Devonian, near Louisville. 
10. Right lateral view of a corallum, from the Lower Devonian rocks, 
Falls of the Ohio. 
11. Right lateral view of a corallum, from the blue clay of the Middle 
Devonian, Falls of the Ohio. 
The specimens figured in this Plate, with the exception of Figs. 
7 and 8, belong to the collection of the author, 
