PLATE 11. 



LTASSIC CORALS FROM THE SUTTON STONE. 



TJiecosmilia ritgosa, Laube. (P. 13.) 



Its calice, magnified. 



A fissiparoiis calice, magnified. 



A corallite, magnified. 



Part of the wall, some septa, and some dissepiments, magnified. 



A deformed corallite. 



Rhahdopht/llia recondita, Laube. (P. 17.) 



Part of its transverse section, highly magnified, to show the septal arrangement. 



The costse, magnified. The corallite has Astrocoenia 2Jarasitica upon it. 



ThecosmUia mirabilis, Duncan. (P. 12.) 



A caKce, highly magnified. 



Montlwaltia pedmiculata, Duncan. (P. 10.) 



Its costse and epitheca, magnified. 



) Peduncles of ThecosmilicB. 



