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GENUS II. ANTHEA (Johnston). 



Actinia (Ellis). 

 Anemonia (Eisso). 

 Entacmcea (Ehbenb.). 



Base slightly 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. 



Disk 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. cereim 



