PLATE XVI. 



CORALS I'ROM THE LOWER AND MIDDLE LIAS. 



Fig. 



1. Lejy'idophyllia Tlebridensis, Duncan. Natural size. (P. 62.) 



2. Calices, magnified, showing calicular gemmatioii. 



3. Side view of corallites, showing the epitheca. 



4. Septa, magnified. 



5. 1 



6. L, „ „ \MQnUivaltia rugosa, Wright, sp. (P. 58.) 

 „ )Common lorms oi ■^ ^, ,, -.ht • w ajo 



7. [ YThecocyathus rugosus, Wright, Mo. 



9. 

 10. 

 11. 



12. JUniisiial and young forms of the same species. 



13. 



14. 



8. Septal ends (external) and intermediate endotheca (magnified). 

 15. A section magnified, showing the strong and arched endotheca between the 

 septa. 



