PLATE XIV. 



CORALS FROM THE LOWER LIAS. 



Fig. 



1 . A calice of Montlwaltia rugosa, Wright, magnified. (Pp. 58.) 



2. An oblique view of some dentate septa of the same species, magnified. 



3. A portion of a worn calice, magnified, showing the irregular septal arrangement of 



some specimens of this species. 



4. A young specimen of Montlwaltia mucronata, Duncan. (Pp. 59.) 



5. A variety oi Montlwaltia mucronata. 



6. One of its septa, magnified, showing the mucronate processes and the granular 



ornamentation. 



7. One of the processes, magnified. 



8. A side view of the corallum of a full-grown individual, rather enlarged. 



9. A calice of a full-grown Montlivaltia mucronata, magnified. (Pp. 59.) 



10. A deformed specimen of a variety of Montlivaltia mucronata. 



11. A conical variety of Montlivaltia mucronata. 



14. A variety of Montlivaltia mucronata, Avith a deeper calice than the ty[)e. 



15. The calice, magnified. 



16. One of its septa, magnified. 



17. A process, magnified. 



18. A variety of Montlivaltia mucronata. 



12. The corallum qI Montlivaltia nummiformis, Duncan. (P. 60.) 



13. The basal epitheca and projecting septa, magnified. 



