SUBDIVISIONS OF ACTINOID POLYPS. 63 
in another species described by the author, rather awkwardly 
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ANTIPATHES ARBOREA, 1D}: 
The number is commonly sza ; but 
handled by the polyp. 
in one genus, Gerardia, it is as great as twenty-four. 

POLYP OF A. ARBOREA, MUCH ENLARGED, 
