60 A CATALOGUE OF THE BRITISH MARINE ALGJE 



Argyle (Machrihanisb Bay) ; Orkney Islands. Ireland : Bantry Bay, 

 Co. Cork ; Balbriggan and Killiney, Co. Dublin ; Downshire coast ; 

 Kilkee and Miltown Malbay, Co. Clare. Channel Islands (Alder- 

 ney). Rather rare. 



Gen. 155. HELMINTHOCLADIA J. Ag. (non Harv.). 



H. pur pur ea J. Ag. (= Nemalion purpureum Chauv.). Coasts of 

 Cornwall (Whitsand Bay) ; Devon (Torquay, Exmouth, Sidmouth) ; 

 Sussex (Brighton) ; Isle of Man (fide Talbot). Ireland: Balbriggan 

 and Ireland's Eye, Co. Dublin ; Kilkee and Miltown Malbay, Co. 

 Clare. Channel Islands (Guernsey). Very rare. 



H. Hudsoni J. Ag. Coasts of Cornwall (Whitsand Bay) and 

 Devon (Exmouth). 



Gen. 156. HELMINTHORA J. Ag. 



H. divaricata J. Ag. (= Dudresnaya divaricata Harv. Phyc. Br. 

 pi. ex.). Coasts of Cornwall (St. Minver, Scilly Islands, Mount's 

 Bay, Falmouth, Pridmouth, Whitsand Bay) ; Devon (Plymouth, 

 Bovisand, Torquay, Sidmouth) ; Dorset (Portland, Weymouth, 

 Swanage, Poole) ; Sussex (Brighton). Wales: Anglesea (Aber- 

 ffraw). Scotland: Kincardine (Bay of Nigg) ; Aberdeen (Peter- 

 head) ; Banff (Gamrie) ; Elgin (Lossiemouth) ; Orkney Islands 

 (Skaill); Argyle (Appin); Bute (Arran); Ayr (Saltcoats, Ardrossan). 

 Ireland: Bantry, Co. Cork; Killiney and Howth, Co. Dublin; 

 Antrim and northern coast generally ; Roundstone, Co. Galway ; 

 Kilkee, Co. Clare. Channel Islands (Jersey, Guernsey, Alderney). 

 Locally abundant, but not generally distributed. 



Farn. CH^ETANGIACE^ Schm. 



Tribe SCINAIE^ Schm. 

 Gen. 157. SCINAIA Bivona. 



S. fnrcellata Bivona (= Ginnania furcellata Mont.). Coasts of 

 Cornwall (Scilly Islands, Mount's Bay, Penzance) ; Devon (Tor- 

 cross, Torquay, Dawlish, Exmouth, Budleigh Salterton, Sidmouth) ; 

 Dorset (Weymouth, Studland) ; Hants (Isle of Wight, Southamp- 

 ton) ; Sussex (Worthing, Brighton) ; Suffolk (Felixstowe, Gorton 

 near Lowestoft); Norfolk (Yarmouth, Sheringham, Cromer). Scot- 

 land: Orkney Islands (Deer Sound); Bute (Isles of Arran and 

 Cumbrae). Ireland : Bantry Bay, Co. Cork ; Howth, Co. Dublin ; 

 Portaferry and Strangford Lough, Co. Down; north side of Belfast 

 Lough and Glenarm Bay, Co. Antrim ; Roundstone Bay, Co. Gal- 

 way ; Quilty Strand, Miltown Malbay, Co. Clare. Channel Islands 

 (Jersey, Guernsey, Alderney). Rather rare. f. snbcostata J. Ag. 

 Coasts of Devon (Sidmouth), Bute (Isle of Cumbrae), and Cork 

 (Bantry Bay). Rare. 



Tribe CH^TANGIEJE Schm. 

 Gen. 158. CHOREOCOLAX Reinsch. 



C. polysiphonm Reinsch. Coasts of Devon (Plymouth) ; Kent 

 (Folkestone) ; Northumberland (Berwick). Scotland : Bute (Isle 

 of Cumbrae) ; Ayr (Fairlie, Saltcoats). Ireland: Dungarvan Bay, 



