A CATALOGUE OF THE BRITISH MARINE ALGJE 7 



C. Crustacea Thur. Coasts of Devon (Salcombe, Sidmouth, 

 Torquay), Dorset (Swanage), and Northumberland (Berwick). Not 

 uncommon. 



G. fasciculata Ag. Coasts of Dorset (Swanage) and Northumber- 

 land (Berwick, Holy Island) ; Scotland (Cumbrae, Lismore, Elie, 

 Fife) ; Ireland (Miltowii Mai bay). 



C. vivipara Harv. Nereis Boreali- Americana, iii. p. 106 (1858). 

 Arbroath, May, 1893 ; J. Jack. 



Gen. 24. DICHOTHRIX Zan. 



D. gypsophila Boru. & Flah. in Ann. So. Nat. vii. ser. Bot. 

 vol. iii. p. 377. On rocks near high- water mark. Weymouth, 

 Aug. 1900; and Sidmouth, Aug. 1901 ; E. A. B. 



Subtribe KIVULARIACE^E Kiitz. 

 Gen. 25. ISACTIS Thur. 



I. plana Thur. (= Rividaria plana Harv.). Coasts of Devon- 

 shire (Sidmouth), Hants (Ventnor, I. W.), Sussex (Bognor), Essex 

 (Blackwater), Dorset (Swanage, Weymouth), and Northumberland 

 (Berwick). Not uncommon. /3 Jissurata Born. & Flah. Coast 

 of Northumberland (Berwick). 



Gen. 26. BIVULARIA Ag. 



R. Biasolettiana Menegh. (= Schizosiphon Warreni Casp.). 

 Coasts of Devon (Sidmouth, Plymouth), Cornwall (Falmouth, 

 Penzance, Wadebridge), Yorkshire (Scarborough), Northumberland 

 (Berwick)) and Dorset (Weymouth) ; N. Wales (Hilbre I., Point of 

 Ayr) ; Scotland (Cumbrae) ; Ireland (Torr Head, Antrim). Not 

 uncommon. 



E. atra Both. Common on the shores of England, Scotland, 

 Ireland, and the Channel Islands. /3 hemispharica Born. & Flah. 

 With the type. - -y confluens Farlow. Coasts of Devon (Sidmouth) 

 and Northumberland (Berwick). Kather rare. 



R. nitida Ag. (= E. plicata Carm.). Coasts of Devon (Torbay) 

 and Cornwall (Mounts Bay, Saltash, Trevone) ; Scotland (Appiu, 

 Ballantrae, Eyemouth) ; Ireland (Innischerig Island, Malby). Not 

 uncommon. 



R. bullata Berk. (= R. nitida Desmaz.). Coasts of Devon (Tor- 

 quay, &c.) aud Cornwall (Looe, Fowey, St. Minver, Mounts Bay); 

 Ireland, South and West ; Channel Islands (Guernsey). Bare. 



R. mesenterica Thur. (= R. polyotis Holm. & Batt. Rev. List, non 

 Born. & Flah.). Coast of Devon (Torquay). Rare. 



R. australis Harv. Coast of Devon (Torquay). Rare. 



Gen. 27. BRACHYTRICHIA Zan. 



B. Balani Born. & Flah. Coasts of Dorset (Bournemouth, 

 Swanage) and Devon (Sidmouth). Very rare. 



Tribe II. SIROSIPHONIACE^E Rabenh. 

 Gen. 28. MASTIGOCOLEUS Lagerh. 



M. testarum Lagerh. Not uncommon on the shores of England and 

 S. Scotland; Ireland (Belfast Lough); Channel Islands (Guernsey). 



