A CATALOGUE OF THE BRITISH MARINE ALG^E 53 



combe, Plymouth, Torbay, Sidmouth, Salcombe) ; Dorset (Wey- 

 mouth) ; Sussex (Bognor, Brighton) ; Norfolk (Yarmouth) ; Durham 

 (Seaton Carew) ; Northumberland (Cullercoats). Scotland: Edin- 

 burgh (Joppa) ; Fife (Kinghorn, Kirkcaldy) ; Aberdeen (Peterhead) ; 

 Orkney Islands (Skaill) ; Argyle (Toward) ; Bute (Isle of Cumbrae) ; 

 Ayr (Saltcoats). Ireland: Bantry Bay and Cove of Cork; Howth 

 and Malahide, Co. Dublin ; Strangford Lough, Co. Down ; Carrick- 

 fergus, Co. Antrim ; Roundstone, Co. Galway. Channel Islands 

 (Jersey, Guernsey). Rare, but widely distributed. 



Gen. 139. HAPLOSPORA Kjellm. 



H. ylobosa Kjellm. emend. Breb. (= H.ylobosa Kjellm. et Scapho- 

 spora speciosa Kjellm.). S.W. coast of Scotland : Bute (Isle of 

 Cumbrae). Very rare. 



Gen. 140. ACHINETOSPORA Born. 



A. pusilla Born. (= Ectocarpus pusilius Harv.). Coasts of Corn- 

 wall (Laud's End, St. Michael's Mount, Mount's Bay, Cawsand 

 Bay) ; Devon (Ilfracombe, Plymouth, Paignton, Torquay, Teign- 

 mouth, Sidmouth, Firestone Bay) ; Dorset (Swanage) ; Sussex 

 (Brighton). Scotland : Haddingtou (Dunbar) ; Bute (Isles of 

 Arran and Cumbrae). Ireland: Helvick Point and Dungarvan 

 Bay, Co. Waterford. Channel Islands (Guernsey). Rather rare. 

 (3 crinita Batt. ( = Ectocarpus crinitus Carm.). Coast of Devon 

 (Ilfracombe, Water mouth, Torbay, Firestone Bay). Scotland: 

 Edinburgh (Joppa, Caroline Park); Aberdeen (Peterhead) ; Argyle 

 (Appin) ; Bute (Isles of Arran and Cumbrae) ; Renfrew (Gourock) ; 

 Ayr (Girvan) ; Shetland Isles. Rare. 



Suborder DICTYOTE/E Thur. 







Fam. DICTYOTACE.E J. Ag. 

 Gen. 141. DICTYOTA Lamour. 



D. dichotoma Lamour. Coasts of Cornwall (St. Minver, Trevoue, 

 Scilly Islands, Mount's Bay, Falmouth, Fowey, Looe) ; Devon 

 (Plymouth, Torbay, Teignrnouth, Sidmouth) ; Dorset (Portland, 

 Weymouth, Swanage) ; Hants (Isle of Wight) ; Sussex (Brighton); 

 Essex (Walton) ; Suffolk (Felixstowe) ; Norfolk (Yarmouth, Cromer); 

 Yorks. (Whitby) ; Northumberland (Cullercoats, Alnmouth). Isle 

 of Man. Wales : Anglesea (Puffin Island) ; Carnarvon (Swillies). 

 Scotland: Haddington (Dunbar) ; Edinburgh (Newhaven, Leith) ; 

 Fife (Elie, Aberdour) ; Orkney (Kirk wall, Skaill) ; Argyle (Loch 

 Etive, Forth of Lome, Mull of Kintyre, Castle Toward) ; Bute 

 (Isles of Cumbrae and Arran) ; Ayr (Ayrheads) ; Renfrew (Cloch). 

 Ireland generally. Channel Islands (Jersey, Guernsey, Alderney). 

 Common and abundant on the southern and western shores of England 

 and Ireland ; much less abundant, and local, on the east coast of 

 England and of Scotland generally. /? implexa J. Ag. (= var. 

 intricata Ag.). Coasts of Cornwall (St. Minver, Falmouth, Talland 

 Bay); Devon (Torquay, Plymouth, Sidmouth); Dorset (Swanage); 

 Hants (Isle of Wight) ; Anglesea (Puffin Island) ; Carnarvon 

 (Criccieth) ; Orkney Islands (Kirkwall) ; Argyle (Castle Toward) ; 



