PLATE VIII. 
JRALS FROM THE UPPER GREENSAND. 
Fig. 
LS 
3. 
4.) Corallites of Onchotrocus Carteri, Duncan. (P. 20.) 
D. 
tle 
13. 
6. A worn calice, magnified. Fossilization has produced a faise union of the septa, 
and a central space. 
8 } Sections of the same specimen. ‘The central tissue is due to fossilization. 
9. A normal calice, magnified. 
10. 
12. ‘The costal and epithecal structures of three different specimens. 
14. 
15. The corallum of Cyathophora monticularia, D’Orb., sp. (P. 21.) 
16. A portion, magnified. 
A 
| Sections magnified, showing the endotheca, and in fig. 18 one of the tablule. 
