29 



the other cycles unite, with beautiful regularity, in such a wny as to form 

 scries of deltas in each of the six principal chambers. Those of the first three 

 cycles are in the form of large upstanding leaves, and though their surfaces 

 are regularly wrinkled like cockle-shells, their free edges are entire. 



Synapticula in ten to twelve zones, which though forming fairly regularly 

 concentric series, do not at once arrest the eye by this character. 



Columella distinct. Corallum brilliant white : soft parts mauve. 



Bay of Bengal, off the Kistna Delta, 678 fathoms, and off Trincomalee, 

 800-636 fms. 



The form and structure of the septa in this species is much like that of 

 the Stephanophyllia imperialis figured by Michelin (Icon. Zoophytol. pi. viii. 



Calcutta: Baptist Mission Press, 1898. 



