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GENUS VI. CERIANTHUS (Della Chiaje). 



Tubular ia (Gmelin). 

 Mosckata (Blainville). 

 Edwardsia (Forbes). 



Column lengthened, cylindrical, swollen and bulb- 

 like at the inferior extremity, which is perforated with 

 a distinct orifice ; expanding trumpet - like at the 

 margin, which merges into the tentacles, without 

 parapet or fosse. Surface smooth, without loop-holes, 

 or (apparent) suckers. Usually enveloped in a loose, 

 non-adherent tube, closed at the lower end, of tough, 

 membranous texture, and ragged exterior. 



Disk wider than column, but not over-arching : 

 funnel-shaped, with conspicuous radii. 



Tentacles of two kinds ; the one marginal, the other 

 gular ; both in perfect circles, those of each equal 

 inter sc, moderately numerous, slender • absolutely 

 incapable of retraction. 



There is but one British species as yet certainly 

 assigned to this genus, C. Lloydii. 



