LIST OF ILLUSTRATIONS 



FIG. FACE 



1. A fully expanded Carj-ophyllia polyp . . .16 



2. A group of four specimens of Caryophyllia smithii and one 



specimen (black ring) of Balanophvllia regia . 



3. Diagram of a transverse section through the cup of a 



Caryophyllia ...... 



4. Diagram of an external view of a Caryophyllia 



5. Lophohelia prolifera . . . .To face page 28 



6. Diagram of a transverse section of a ]\Iadreporid calvx . 32 



7. Diagram of the mesenteries of the Astraeid polvp Manicina 



8. Diagram to show a stage in the division by fission of the 



Astraeid polyp Manicina .... 



9 and 10. Diagrams of sections of Porites polyps 



11. Diagram to show a stage in the division of a polyp of 



Porites ....... 



12. FlabeUuDi rtibniin ....... 



13. Lower part of figure a branch of Lophohelia, upper part 



Lophohelia in blastogenic fusion with an Amphihelia 



14. Oculina ........ 



44 

 46 



15. Diagrams to illustrate the three princ 



endotheca . 



16. Galaxea caespitosa 



17. Fa via 



18. Goniastraea 



19. DicJwcoenia pulcherrinia 



20. Aleandrina 



21. Euphyllia 



22. Merulina 



pal kinds of 



49 

 51 



To face page 53 



54 

 . 56 

 . 58 



60 



