168 



other shells, as Ghemnitzia, Nerincea, and other Ptramidalid^, 

 which had made their home in the lagoon. It is truly 

 astonishing to observe the immense masses of nodulated 

 Crystalline Limestone, formed entirely of Corals, that are raised 

 and sent out of these old reefs for road material; the Clay 

 parting at intervals of about 16 to 18 inches, is a remarkable 

 character in these Yorkshire reefs. 



In the Museum of the Yorkshire Philosophical Society, I was 

 fortunate in finding Mr. Dallas at home, and he kindly opened 

 the glass cases to enable me to examine the specimens of all 

 the Corals that had been found in the Coralline Oolite of 

 Yorkshire: I was delighted to discover some fine specimens 

 of all the species collected in Wiltshire. The following is the 

 Hst I made out : — 



Corals pkom the Coralline Oolite op Yorkshire. 



Montlivaltia dispar, Phill., Malton 

 Bhabdophyllia Phillipsii, Ed. and Haime, Malton 



Thecosmilia annularis, Flem., Malton 



Thamnastrcea concinna, Goldf., Malton 



arachnoides, Park., Malton 



Stylina tubulifera, Phill., Malton 



Isasi/rcea explanata, Goldf., Malton 



Comoseris irradians, Ed. and Haime, Malton 



Isastrcea inoequalis, Phill., Malton 



In Dorsetshire we find evidence of the same Coral formation 

 in the Coral Rag near Osmington Mills, where TJiamnastrcea 

 arachnoides, Park., and Thecosmilia annularis, Elem., are 

 sometimes found. 



ZOANTHARIA, FROM THE CoRAL EaG AND CoRALLINE OoLITE. 



Stylina tubulifera, Phill. and 1 other sp. 

 Montlivaltia dispar, Phill. 

 Thecosmilia annularis, Flem. 

 Rhabdophyllia Phillipsii, Ed. and Haime 

 Calamophyllia Stokesi, Ed. and Haime 

 Cladophyllia Gonybearii, Ed. and Haime 



