368 



LIST OF FOSSILS FOUND IN THE BUILTH DISTRICT. 

 By Messrs. Powell and Griffiths. 



Llandeilo Flag. 



Ogygia Buchii. 



Portlockii, 

 .A.saphus t>Tannus. 

 Tnnucleus fimbriatus 



,, concentricus. 



Calymene duplicata. 

 Euomphalus perturbatus. 



Lingula Davisii, in additioa to 

 the above 



Trinucleus Lloydii. 

 Theca triangularis. 

 Siphonotreta micula. 

 Lingula attenuata. 

 Ampy.x nudus. 

 Diplograpsus pristis. 

 Agnostus Mc'Coyii. 



Did>-mograpsus Murchisonii. 

 Ogygia Corndensis (A. Powisii.) ? 



Gwernyfydd. 



Wellfield. 

 Wellfield Lodge. 



Pen-cerig. 



Gilwern Hills, near 

 Llandrindod. 



Volcanic Grit Overlying Llandilo. 



Asaph us t},Tannus. 

 Orthis flabellulum. 



Pentamerus oblongus. 

 Petraia subduplicata. 

 Orthis radians. 



Cyathophyllum. 

 Acidaspis Jamesii. 

 Graptolites Ludensis. 

 ,, Sedgwickii. 



Cardiola interrupta. 

 Pterinea Sowerbyi. 

 Lingula plumbea. 

 Rhynchonella. 

 Orbicula. 



Western flank of the 

 Caerneddau Hills. 



Upper Llandovery. 



Wenlock Shale. 



Pen-cerig. 



Builth Bridge. 



