PLATE XII. 



CORALS FROM THE LOWER LIAS. 

 Fig. 



1. Thecosmilia Martini, E. de Fromentel. (P. 45.) 



2. Part of its epitheca magnified. 



3. Montlivaltia Ruperfi, Duncan. (P. 46.) 



4. Its calice. 



5. The calice, magnified. 



6. A young specimen oi Montlivaltia Guettardi, Blainville. fP. 51.) 



7. The calice, magnified. 



'»■) 



11. ^ A full-grown specimen. (P. 51.) 

 12.) 



13. Its calice, magnified. 



14. The septa, magnified. 



8. The calicular surface of a young Thecosmilia Martini. 



9. The same, magnified. 



15. Lepidophyllia Stricklandi, Duncan. (P. 53.) 



16. A cast of Thecosmilia Michelini, Terquera. (P. 51.) 



17. Part of the corallum of Isastrcea endothecata, Duncan. (P. 53.) 



18. A regular calice, magnified. 



19. A side view of a magnified calice, showing the endothcca in the calice. 



20. Obhque view of some calices, magnified. 



21. Endothecal dissepiments connecting the septa, magnified. 



A 



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