PLATE II. 



Fio-. 8. Ceratotrochus (Phlceocyathus) hospes, x 3. 



Fig. Sa. Ceratotrochus (Phloeocyathus) hospes, x 4. 



Fig. 9. Lochmeeotrochus oculeus : natural size. 



Fio-. ga. Lochmseotrochus oculeus. x 4. 



Fig. 10, 10a. Trochocyathus caryophyllioides. x 2. 



Fig. 11, ii«. Trochocyathus pileus. x 3. 



Fio-. 12. Trochocyathus (Thecocyathus) rhombocolumna. x 4. 



Fio-. 13. Trochocyathus (Thecocyathus) virgatus. x 4. 



Fio-. 14, 14a. Trochocyathus (Tropidocyathus) Lessoni. x 2 1 /,. 



Fig. 15, 15^. Deltocyathus fragilis. > 2 1 . 



Fig. 16, \6a. Deltocyathus lens. 6. 



