PLATE XVI. 



Figure 1. Montlivaltia Lynyani, Duncan. The corallunij side view, natural size. 



2. Costae and epitheca, magnified. 



3. TuRBiNOSEKis ELEGANS, Duncan. The corallum, side view, natural size. 



4. Septa, magnified. 



5. Plocophyllia flabellata, Eeuss. The corallum, side view, natural size. 



6. The costse, magnified. 



7. Cyclosbris Peeezi, M. Edw. & Haime. The calice, natural size. 



8. Showing the everted margin and costte, magnified. 



9. Trochocyathus Nariensis, variety. The calice, natural size. 



10. Septa and pali, magnified. 



11. Cyclolites Altavillbnsis, Defr. The corallum, side view, natural size. 



