ANALYSIS OF THE BRITISH FAMILIES. 
Without a coralluvi. 
Simple 
Caimeadce. 
z/f 
Compound 
Zoanthidcc. 
With a corallum. 
Substance of corallum solid. 
Interseptal chambers free 
Turhinol'iadoc. 
30'-! 
Interseptal chambers crossed by dissepiments . 
Cavity gradually filling up 
Oculinadce. 
Cavity permanently open 
Angiada. 
Substance of corallum porous 
Eupsammiadcc. 
