PLATE II. 



Fig. 1. Oculina robusta Pourtales (Illiist. Cat. Mas. Comp. Zobl. No. IV.), natural size. 



Fig. 2. Oculina robusta Pourtales, calicle, magnified. 



Fig. 3. Oculina varicosa var. Lesueur, natural size. Bermudas. 



Fig. 4. Ocnlina varicosa Lesueur, calicle, magnified. 



Fig. 5. AstroccDnia pectinata Pourtales (Illust. Cat. Mus. Comp. Zool. No. IV.), natural size. 



Fig. 6. Astrocoonia pectinata Pourtalfes, calicles, magnified. 



Fig. 7. AstrocoDuia pectinata Pourtales, section of calicle, magnified, showing columella and pectinated 

 septa. 



