f Gkeat Britain. 



[To face page 42. 



IV. 



, Orders, &c. 



Typical Localities. 





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Upper 



Middle 



Asteroidea, 



T ppoda. 



Lower -anchiata. 



(Dol 



Belt) 



Middle 



(Ffes 

 Belt) 



ia. 



OQ 



Lower 

 Maer 

 Belt) 



Menevifcraca 



Longm 

 lech I 



nts (?) 



da. 



raca(?). 



). Brachiopoda 



?). Annelida. 



Portmadoc and Dolgelly, in 

 North Wales. 



Tremanhire, Ramsey Island, 

 and Llanveran, near St. Da- 

 vid's, in South Wales. 



Malvern, Dolgelly, and near 

 Portmadoc. 



Maentwrog, Dolgelly, and at 

 Ramsey Island, near St. 

 David's. 



Neighbourhood of Maentwrog, 

 Dolgelly, and St. David's. 



St. David's, in South Wales ; and 

 neighbourhood of Maentw- 

 rog, and Dolgelly, in North 

 Wales. 



St. David's, in South Wales; 

 Harlech, Bangor, &c, in 

 North Wales ; Longmynd, 

 in Shropshire ; and Bray 

 Head, in Ireland. 



St. David's. 



