PLATE XT. 



LIASSIC CORALS FROM LUSSAY, IN SKYE, AND MARTON, NEAR GAINSBOROUGH. 



Fig. 



1. Isastraa Murc/tisoni, Wright. (P. 41.) 



2. Calices, magnified. 

 8. A calice, magnified. 



4. A septum, magnified. 



5. Scpffistreea Fromenteli, Terquem et Piette, (P. 87.) Some fissiparous calices, 



slightly magnified. 



