PLATE X. 



CORALS FROM THE UPPER GREENSAND OF HALDON. 



Tig, 



1. The corallum of Placosmilia ciineiformis^ Ed. and H. (P. 27 ) 



2. Part of a septum, magnified. 



3. The costse, magnified. 



4. ObHque view of the costae, magnified. 



5. The caUce, magnified. 



6. The corallum Placosmilia Parkinsoni, Ed. and H. (P. 28.) 



7. The calice, magnified. 



8. The corallum of Peplosmilia depressa, E. de From. (P. 29.) 



9. The costae, magnified. 

 10. The calice, magnified. 



12. [-The corallum of Placosmilia ma(jnijica, Duncan. (P. 28.) 



13.; 



