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9. 
PLATE III. 
Cladocora arbuscula Milne-Eflw. and Haime, natural size. 
Cladocora arlniscula Milne-Edw. and Haime, with polyps expanded, natural size. 
Cladocora arljuscula Milne-Edw. and Haime, calicle, magnified. 
Cladocora arbuscula Milne-Edw. and Haime, calicle with Iniccal membrane dried, magnified. 
Cladocora arbuscula Milne-Edw. and Haime, vertical and horizontal sections of branches, show- 
ing dissepiments, magnified. 
Cladocora arbuscula Milne-Edw. and Haime, polyp expanded, magnified. 
Cladocora arbuscula Milne-Edw. and Haime, young calicle, magnified. 
Oculina varicosa Lesueur, calicle^ magnified. 
Oculina varicosa Lesueur, section of calicle, magnified. 
Fig. 10. Oculina diffusa Lamarck, calicle, magnified. 
Fi'T. 11 and 12. Oculina difl'usa Lamarck, groups of calicles, slightly magnified. 
Fig. 13. Oculina diffusa Lamarck, transverse section of branch through calicles, magnified. 
Fig. 14 and 15. Oculina pallens Ehr., calicle, magnified. 
Fig. 16. Oculina pallens Ehr., transverse section of branch, magnified. 
Fi*'. 17. Oculina pallens Ehr., longitudinal section of branch, showing also transverse section of throe 
calicles. 
Fi". 18 and 19. Stylaster sanguineus Val., front and side views, natural size. (The researches of Moseley 
have shown the StylasteridiB to be Hydroids. Tliey were drawn on the same jilate witli 
OculinidiB on account of their .supposed relations to that family, according to Sliliie-Edw. 
and Haime. 
Fi<'. 20. Stylaster sanguineus Val., side view of branch, magnified, showing calicles in a row on the side. 
The front of the branch, seen in profile, is .smooth. The back, on the left, shows the ampulla} 
containing the gonophores. 
Fi^'. 21. Stylaster sanguineus Val., Ampulla; containing the gonophores, magnified. 
Fig. 22. Stylaster sanguineus Val., vertical section of calicle and part of a horizontal section below, 
magnified. The small holes surrounding the central opening in the lower section ought also 
to be sho^vn in the intervals between the pseudo septa in the vertical section. The style 
ought to be represented somewhat hirsute. 
Fig. 23. Stylaster sanguineus Val., rear siu'face of branch, magnified. 
Fig. 24. Stylaster sanguineus Val., calicle, magnified. 
