CARYOPHYLLEAD^E. 



33 



Cyathina (Ehr.) = Caryophyllea (Johnst.). Co- 

 rallum simple, or compound only by mutual ad- 

 hesion, cylindrical, or inversely sub-conical, cup- 

 like above, adherent : plates converging, graduated 

 in three series ; a sponge-like mass of contorted 

 plates in the bottom of the cup. Animal actinia- 

 like, with a ribbed mouth, and globose-tipped 

 tentacles. 



C. Smithii. Fig. 50 ; n. s. 

 borealis? 



50 51 



Balanophyllea (Wood). Corallum simple, cylin- 

 drical, adherent ; plates arranged in threes which 

 diverge from the circumference. Animal with a 

 protrusile mouth, not ribbed, and conical tentacles. 



B. regia. Fig. 51 ; n. s. 



Oculina (Lamk.). Corallum branched in a tree- 

 like manner, with long stems, solid, smooth. 

 O. prolifera. Fig. 52 ; n. s. 



