PLATE XIX 



PAGE 



Figs. 1-4. ZAPHRENTIS KEYSERENSIS Swartz n. sp 201 



1. Side view of type. 



2, 3. Transverse sections. 



4. Longitudinal section of a small individual. 



Helderberg formation, Keyser member, Keyser, W. Va. 



Pigs. 5-9. CYATHOPHYLLUM CLARKI Swartz n. sp 201 



5. Side view of type. 



6. Interior of calyx of same. Martin Mountain, Allegany County. 



7. Transverse section. X 2. Cumberland. 



8. Longitudinal section. Martin Mountain, Allegany County. 



9. Side view of corallum showing deep annular constrictions. Same 



locality. 

 Helderberg formation, Keyser member. 



Figs. 10, 11. CYATHOPHYLLUM OHERNI Swartz n. sp 203 



10. Side view of two individuals. The corallum on right side is in- 



complete. 



11. Interior of calyx of one of preceding. 



Helderberg formation, Martin Mountain, Allegany County. 



Figs. 12-17. CYATHOPHYLLUM RADICULUM Rominger ? 202 



12-14. Side views of three coralla. 

 15-17. Calices of same individuals. 



Helderberg formation, Keyser member, Cumberland. 



to 



