PLATE XIII. 



CORALS FROM THE LOWER LIAS. 



Fig. 



1. The corallum of Imstraa Stricklandi, Duncan. (P. 54.) 



2. A calice, magnified. 



3. The dentations of a septum, magnified. 



4. The strong dissepimental endotheca, magnified. 



5. Part of the coralhim of Sepfastnea JSveshatni, Duncan. (P. 52.) 

 0. A calice, magnified. 



7. An irregular and contorted calice, magnified. 



8. The corallum of Cyathocoenia glohom, Duncan. (P. 55.) 



9. Calices of Cyathocmnia globosa, magnified. 



10. Part of the corallum oi Isastrcea wMvyw/s, Duncan. (P. 54.) 



11. A system of four cycles of septa, magnified. 



