PLATE VIII. 
Fig. 1. Colpophyllia gyrosa Milne-Ed w. and Haime, horizontal section, natural size. 
Fig. 2. Colpophyllia gyrosa Milne-Edw. and Haime, part of a waterwom specimen showing the double 
wall separating the sinuses. 
Figs. 3-5. Colpophyllia gyrosa Milne-Edw. and Haime, vertical sections. 
