98 A CATALOGUE OF THE BRITISH MARINE 



Gen. 253. PHYMATOLITHON Fosl. 



P. polymorphism Fosl. (= Melobesia polymorpha Harv.). Not un- 

 common on the British coasts. 



P. IcBvigatum Fosl. Coast of Northumberland (Berwick), and 

 west coast of Ireland. Not common. 



Gen. 254. CORALLINA Lamour. 



C. ojjicinalis L. Common almost everywhere on the British 

 coasts. Var. /? compacta Batt. ( = C. compacta Crn. Fl. Finst. 

 p. 151). Coasts of Devon (Torquay, Sidmouth), and Dorset (Port- 

 land, Swanage). Bare. 



C. elongata Johnst. Br. Spoug. et Corall. e spec. auth. in Herb. 

 Batt. (= C. mediterranea Aresch.). Coasts of Cornwall (Lizard, 

 Falmouth, St. Michael's Mount, Pridrnouth, Fowey). Ireland: 

 Ballydonegan Bay, and Baltimore, Co. Cork. Channel Islands 

 (Jersey). Eare. 



C. squamata Ellis. Coasts of Cornwall (Mount's Bay, Lizard, 

 Falmouth, Fowey) ; Devon (Plymouth, Paignton, Torquay, Sid- 

 niouth) ; Dorset (Swanage) ; Hants (Isle of Wight). Scotland : 

 Bute (Arran) ; Ayr (Portincross). Ireland: Cork (Youghal) ; Clare 

 (Malbay) (" Not uncommon all round the coast," Johnston & Hens- 

 man). Channel Islands. Not uncommon on the south coast of 

 England and the Channel Islands. 



C. virgata Zan. Coast of Northern Ireland : Bangor, Co. Down. 

 Very rare. 



C. rubens Ellis & Solan. (= Jania rub ens Lam.). Coasts of 

 Cornwall, Devon, Dorset, Hants, Sussex, Kent, Essex, Suffolk, 

 Norfolk, Durham (Eoker, Marsdeu), Northumberland (Whitley), 

 Isle of Man. Wales (Anglesea). Scotland: Fife (E lie) ; Aberdeen 

 (Peterhead); Orkney (Kirkwall) ; Argyle (Lismore) ; Bute (Cum- 

 brae) ' Ayr (Saltcoats, Girvan, Ballantrae). Ireland: All round 

 the coast. Channel Islands. Common on the southern shores of 

 England, Ireland, and the Channel Islands ; rarer in Scotland. 

 Var. ft curnicidata Hauck (= Jania curnicttlata Lamour.). Coasts 

 of Cornwall (Falmouth, Looe, Fowey) ; Devon (Plymouth, Torquay, 

 Sidmouth); Dorset (Weymouth); Sussex (Worthing, Brighton); 

 Essex (Dovercourt). Not uncommon on the southern coasts of 

 England, Ireland, and the Channel Islands. 



GENERA OF DOUBTFUL AFFINITY. 

 Gen. 255, PORPHYRODISCUS Batt. 



P. simiilans Batt. Coast of Northumberland (Berwick). Very 

 rare. 



Gen. 256. H^EMATOCELIS J. Ag. 



H. rubens J. Ag. (= H&matophloea Crouani Crn., non J. Ag.). 

 Coasts of Cornwall (Trevone Bay, Penzance) ; Northumberland 

 (Berwick). Very rare. 



Gen. 257. EHODODERMIS Crn. 



R. elegans Crn. Coasts of Cornwall (Scilly Islands) ; Devon 

 (Plymouth, Wembury). Var. ft polystromatica Batt. Coasts of 



