PLATE 97. 
BLoTHROPHYLLUM LIRATUM, Nov. Spec. Devonian. 
1. Left lateral view of a weathered corallum, with epitheca denuded, 
showing the ridge along the line of the apertural gap; from 
the blue clay of the Middle Devonian, Falls of the Ohio. 
AULACOPHYLLUM CONIGERUM, Nov. Spec. Devonian. 
2. Calyx of a corallum from the dark-red clay derived from the 
encrinal limestone of the Upper Devonian, near Louisville. 
ACROPHYLLUM CLARKI, Nov. Spee. Devonian. 
3. Right lateral view of a corallum of medium size, with flattened 
apex. 
4, Left lateral view of a large corallum with flattened apex. 
5. Posterior view of a corallum, with apex taking shape from the 
object to which the corallum attached in the early stages of 
growth. s 
6. Posterior view of a corallum from which the epitheca has been 
removed by weathering. 
Examples 3-6 are from the horizon and vicinage of A. conigerum, 
Fig. 2. 
CYATHOPHYLLUM INFOVEATUM, Nov. Spec. Devonian. 
7. View of the calyx and oblique anterior view of a corallum, from 
the Lower Devonian red clay, near Louisville. 
8. Similar view of a corallum, from the Upper Devonian encrinal 
limestone dark-red clay, near Louisville. 
ZAPHRENTIS GALLICALCAR, Nov. Spec. Devonian. 
9. Posterior view of a corallum of adult size. 
10. Anterior view of a corallum. . 
11. Right lateral view of a corallum. 
12. 13. Views of calyces of coralla. 
14. Left lateral view of a young specimen. 
15. Left lateral view of a jejune corallum of irregular growth. 
From the horizon and vicinage of A. conigerum. 
