132 CLASS II.— ORDER II. 



PROLIFEROUS. 



19. CoRALLiNA prolifera. Small ramifications im- 

 planted on the surface of the articulations ; the 

 articulations resembling the cells of bees, com- 

 pressed, and near two millemetres in breadth ; colour 

 very white by desiccation ; height one decimetre. — 

 Plate 10. fig. 5. 



Oriental India. 



PINNATED. 



20. CoRALLiNA pinnata. Branches pinnated, ap- 

 proximate ; colour inclining to yellow. 



Ck>asts of the Bahamas. 



CYMOPOLIA. 



PoLYPiDOMS plant-like, necklace-formed, and di- 

 chotomous ; articulations cylindrical and separated 

 from each other ; polypean pores almost visible to 

 the naked eye. 



Two species alone have served me to establish this 

 genus, which differs from that of the Corallinas by the 

 dichotomous ramifications, from that of the Galax- 

 aura by the thickness of the cretaceous rind, and the 

 smallness of the interior tubular axe ; it also difiers 

 from the Amphiroas by the regularity of its divisions : 

 which peculiarities distinctly separate them from any 

 of these genera. They are easily recognized by the 



