PLATE 133. 



Zaphrentis scutella, Nov. Spec. Niagara. 



1. Left lateral view of a corallum, with calyx filled with rock, from 



the Upper Niagara, near Louisville. Collection of the author. 



2. Similar view of a weathered corallum, from the Upper Niagara 



red clay, near Louisville. 



3. View of the exterior of a corallum, from the Upper Niagara white 



clay, near Louisville. Collection of the author. 



Zaphrentis patula. Niagara. 



4. Right lateral view of a corallum, from the lower strata of the 



Niagara period, near Brunerstown, Jefferson county. Collection 

 of the author. 



5. View of the calyx of a corallum. 



6. Oblique views of inosculated coralla. 



Examples 5 and 6 from the locality of specimen 4. Collection of 

 the author. 



Zaphrentis socialis, Nov. Spec. Niagara. 



7. Right lateral view of a corallum. 



8. 9. Views of the calyces of coralla. 



From the horizon and vicinage of Z. patula. Collection of the 

 author. 



Zaphrentis patens, Nov. Spec. Niagara. 



10. Left lateral view of a corallum. 



11. View of the calyx of a corallum. 



Both from the horizon and vicinage of Z. patula and Z. socialis. 

 Collection of the author. 



Zaphrentis conttlus. Niagara. 



12. Right lateral view of a corallum. 



13. Posterior view of a corallum. 



14. View of the calyx of a corallum. 



From the Upper Niagara ferruginous clay, near Louisville. Col- 

 lection of the author. 



