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ANALYSIS OF THE BRITISH FAMILIES. 



Without a corallum. 



Simple Capneadcs. 



Compound Zoanthidce. 



With a corallum. 



Substance of corallum solid. 



Interseptal chambers free Turbinoliadce. 



Interseptal chambers crossed by dissepiments . 



Cavity gradually filling up Oculinadce. 



Cavity permanently open Anyiadce. 



Substance of corallum porous Eupsammiadce. 



