MADREPORARIA. 

 Fig. 518. 



525 



Madrepore, Madrepora aspera, Dana. Right-hand branches alive. 

 Fig. 519- 



Fig. 520. 



Fig. 521. 



Parties flexuosa, Dana. 



Fig. 522. 



M&andrina gracilis, Dana. 

 Cladocora flexuosa, Ehr. Small piece of a large mass. 



Fig. 523- 



Merulina, speciosa, Dana. Astroides calycularis, Milne-Edw. Coral Polyps in 



various stages of expansion. 



