158 CARBONICOLA, AN'THRACOMYA, AND NAIADITES. 
5. West-LancasHire Coal-FreELD—St. HELEn’s. 




Potato Delf 
Earthy Delf 
Main Delf 
Carunel 
4-foot Mine |— 
Pigeon-house Coals { 
Ravenhead Delfs { 
Bastion Delf |- 
Roger Coal 
Flaggy Delf 
Roger of Whiston Main Coal |- 
Cockle-shell Bars }|— With numerous examples of Carhbonicola nucularis. 
Rushey Park 
Arley Mine With Carbonicola robusta. 
