PLATE VII. 



LIASSIC CORALS FROM BROCASTLE. 



Fig. 



1. Isastraa Sinemuriensis, E. de From. (P. 30.) 



2. The upper part of its corallum. 



3. The caHces shghtly magnified to show the marginal gemmation. 



4. Another view. 

 5-1 



^ I Cahces, magnified. 



7. Septa, magnified. 



8. A corallum with larger calices than is usual. 



9. Calices, magnified. 



10. Thecosmilia Michelini, Terquem et Piette. (P. 14.) A large variety. 



11. Its calice. 



12. A corallum bifurcating. 



13. Its calice, magnified. 



14. Montlivaltia polymorpha, ei YxqWq. (P. 8.) A fractured corallum. 



15. A transverse section, magnified. 



