PLATE XI. 



{Nummulitic and Miocene Series.) 



Figure I.'Hemiaster carinatus, Duncan and Sladen (page 35). The test, from the side. 



2. Abactinal view. 



3. Actinal view. 



4. Tubercle on actinal surface, magnified. 



5. TiioscHELiA TUBERCULATA, Buncan and Sladen (page 67). Part of the apical system^ 



showing the diminished size of the pairs of pores, magnified . 



6. Arachniopleurus retictjlatus, Duncan and Sladen, variety (page 11). Part of 



an interambulacrum and poriferous zone, magnified. {Nummulitic form.) 



7. Temnechinus Rousseaui, d'Archiac and Haime, sp. (page 57) . The test, natural size. 



8. Apical system, magnified. 



9. Part of an interradium and a poriferous zone, magnified. 



10. Part of an ambulacrum (worn), magnified. 



11. Part of a perfect ambulacrum, magnified. 



