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COEALS OF THE LIAS OF ENGLAND AND S. WALES. 195 



EXPLANATION OF PLATS IX. 



Tricycloseris Anyiingi, nat. size, showing the calicular surface 



Cyclolites ctipuliformis, nat. size, showing the corallum. 



Calice of the same, nat. size. 



Thamnastraa Eiheridgei, nat. size. 



Thecosmilia socialis, nat. size. 



The same, nat. size., showing the calicular surface 



Montlivaltia tuberculata, nat. size. 



The same, nat. size, showing the calice. 



Montlivaltia papyracea, nat. size, showing the calice 



Montlicaltia follacea, nat. size. 



