PLATE VII. 



CORALS FORM BROCKENHURST. 



Balanophyllia granulata, Duncan. (P. 47.) 

 Fig. 



1. The corallum fixed to a shell. 



2. General view of the costse, magnified. 



3. Larger or inferior end of the costse, magnified. 



4. Costae higher up, magnified, to show their granules. 



5. The rough and elevated granular surface of the smaller costse, magnified. 



Lobopsammia cariosa, Goldf., sp. (P. 48.) 



6. Lateral view of a corallum. 



7. Costae, magnified. 



8. A corallum with fissiparous calices. 



9. A fissiparous calice, magnified. 



10. The base of a corallum. 



Axopora Michelini, Duncan. (P. 50.) 



11. Corallum. 



12. Magnified view of calices, with the columella and coenenchyma. 



13. Magnified view of corallites in longitudinal section. 



14. Columella, tabulae, and ccenenchyma, highly magnified. 



15. Longitudinal view of corallites in longitudinal section, magnified. (Figs. 13 and 15 



are from a variety.) 



Litharcea Brockenhursti, Duncan. (P. 49.) 



16. Calices, magnified. 



17. A calice, highly magnified. 



