ACTINIADiE. 



173 



with the beautiful representatives of the northern form, — 

 Actinia tabella, and A. graminea of Dana. 



ANALYSIS OF THE GENERA. 



Skin smooth. 



Possessing acontia {Not British) Nemactis. 



Destitute of acontia Actinia. 



Skin warted {Not British) Pkymactis. 



