PLATE XVI. 
Fig. i. Pachyclavularia erecta Roule. 
Fig. 2. Pachyclavularia erecta Roule. 
Fig. 3. Nephthya gracillima n. sp. 3 Polyps enlarged X 30. 
Fig. 4. Studeriotes debilis n. sp. Polyp enlarged. 
Fig. 5. Stereonephthya imbricans n. sp. Group of polyps X 10. 
Fig. 6. Sarcophytum acutangulum (Marenz.). Young colony X 4-5* 
Fig. 7. Sarcophytum glaucum (Q. & G.). Young colony n. s. 
Fig. 8. Sinularia tentaculata n. sp. 
Fig. 9. Acis squamata Nutt. X 4- 
