PLATE X. 



(Miocene Series.) 



■Figure 1. Breynia carinata, d'Archiac and Haime (page 66). Abactinal surface. 



3. Posterior view, slightly magnified. 



3. Abactinal view of a large specimen. 



4. Apical system, magnified. 



5. Clypeaster depressus, Sowerby (page 58). Abactinal view. 



6. Poriferous zone, magnified. 



7. Actinal view. 



8. Longitudinal section. 



9. Large specimen, showing needle-pillars between the roof and base of the test. 



