204 CLASS III.— ORDER II. 



NET-FORMED. 



15. GoRGONiA verriculata. Reticulated; wide and 

 angular meshes ; branches cylindrical ; reticulations 

 slender ; polypi dispersed, rather projecting, and 

 blackish ; axe solid, ligneous, and whitish ; rind grey- 

 ish ; height about one raetre. 



Coasts of the Island Mauritius. 



FAN- LIKE. 



16. GoRGONiA ventalina. Reticulated ; side branches 

 externally compressed ; rind red, and warty. 



Indian Ocean. 



RETICULATED. 



17. Gorgon lA reticulum. Branches very close, and 

 cylindrical ; rind red, and warty. 



Indian Ocean. 



UMBRELLA-SHAPED. 



18. GoRGONiA umbraculum. Fan-formed, almost 

 reticulated ; branches very close, cylindrical, and di- 

 verging ; polypi warty. 



Indian Ocean. 



LATTICED. 



19. GoRGONiA clathrus. Reticulated ; branches 

 cylindrical ; rind smooth. 



MEALY. 



20. Gorgon I A furfuracea. Semi-reticulated, and 

 inclining to fan-form ; branches cylindrical ; small 

 side branches very short, some of them simple and 

 others anastomosed ; polypi numerous, dispersed. 



