

GENUS II. ANTHEA (Johnston). 



Actinia (Ellis). 

 Aiiemmila (Risso). 

 Entacmcea (Ehrenb.). 



Base slishtlv adherent : broader than the column : 

 its outline irregularly undulate. 



Column forming a low thick pillar; the summit 

 expanding ; the margin notched, and bearing budding 

 tentacles, with no distinct parapet, or fosse. Surface 

 cancellated by the intersection of longitudinal furrows, 

 and transverse wrinkles. No suckers, warts, nor 

 loop-holes. Substance pulpy. 



Bisk membranous, very expansile, undulate at the 

 margin. 



Tentacles numerous in several rows, sub-marginal, 

 very long, lax, irregularly flexuous ; scarcely retractile. 



Mouth elevated on a low cylindrical wart, 



Acontia wanting. 



The genus contains but one British species, A. cerens. 



