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ANALYSIS OF THE BRITISH FAMILIES. 



Without a corallum. 



Simple Capneada. 



Compound Zoanthidce. 



With a corallum. 



Substance of corallum solid. 



Interseptal chambers free TarbinoUada. 



Interseptal chambers crossed by dissepiments . 



Cavity gradually filling up Oculinada. 



Cavity permanently open Angiada. 



Substance of corallum porous Eupsammiada. 



