ACTIXI/E. 



485 



vessels placed along the edges of the folds, and the vesi- 

 cles disappeared when the animal was touched." 



Pig. 237. —Actinotoa. 



I, Fungia agariciformis. 2, Alcyoniitm, Cydonium Mulleri. 3, CydoniwB^ 

 polypes protruding and tentacles expanded, others closed. 4, Znantharia 

 viewed from above. 5, Madrepore Abrotanoide. 6, Madrepore, cell slightly 

 magnified, showing internal structure. 7, Corallidm ; Coral, 8, Coral, polypes 

 protruding from the cells. 9, Gnrgonia nobiUs, polypes expanded. 10, Tubi- 

 pora rtmsica. 11, a tubo of same, with polype expanded, and one cut longi- 

 tudinally to show internal structure. 12, Sertidaria, polypes protruded ; and 

 Others withdrawn into polypidoms. 



