A CATALOGUE OF THE BRITISH MARINE ALG 79 
Dorset (Portland, Weymouth); Hants (Christchurch, Isle of Wight); 
Sussex (Brighton) ; Kent (Dover, Deal); Essex (Harwich) ; Suffolk 
(Felixstowe, Corton) ; Norfolk (Yarn mouth, Cromer, Sheringham) ; 
Wales (near Swansea). Scotland: Aberdeen (Peterhead); Elgin 
(Lossiemouth) ; oes Islands (Skaill); Bute (Isles of Arran, 
Cumbrae, and Bute); Ayr (Ardrossan). Ireland: Generally dis- 
tributed. Channel ‘lands .—Var. 8 squarrosa. Devon (Plymouth) ; 
Dorset (Weymouth) ; ease (Brighto n). 
. cerulescens J. Ag. Coasts of Sussex (Hastings); Suffolk 
(Felixstowe). Rare 
Gen. 200. Potysrpxonia Grev. 
P. macrocarpa Harv. (= P. pulvinata Phye. Br. and P. sertulari- 
oides Holm. & Batt. Rev. List). Coasts of Cornwall (Padstow, 
Mount’s Bay, Salen Cove, Falmouth, Fowey); Devon (Ilfracombe, 
hawt Torbay) ; Dorset (Portland, Swanage); Hants (Isle of 
Wight); Sussex oo saa Northumberland (Berwick); Cheshire 
(Hilbre Island). es (Angles ea). Scotland: Orkney Islands 
(North Ronaldsay) ; Bate (isle of Cumbrae); Ayr (Ardrossan, Salt- 
coats). Ireland: Dublin (Balbriggan); Londonderry (Port Stewart) ; 
ree (Miltown Malbay). Channel Islands. Not uncommon. 
. Rhunensis ari eo (Trevone Bay); Devon (Ilfra- 
ae Plymouth). 
P. fibrata Harv. Coasls of Cornwall, Devon, Dorset, Hants, 
Sussex, Kent, Northumberland, Cheshire (Hilbre Island), Isle of 
Man, oti Scotland, Ireland, and the Channel Islands. Not 
uncomm 
Fi aie Grev. a typica J. Ag. Coasts of Cornwall, Devon, 
Dorset, Hants, Sussex, Kent, Norfolk, Yorks., Durham, North- 
umberland, Cheshire (Hilbre Island), Isle of Man, Wales, wae 
Ireland, and the Channel Islands. Common.—Var. £ patens J. Ag. 
Cor nwall, Devon, Cheshire (Hilbre Island), K ccthiavedand (Aln- 
mouth, Berwick), Orkney Islands, Bute (Isles of at and 
Arran). — Var. y formosa J. Ag. (= P. formosa Suhr). Coasts of 
Cornwall, Devon, Dorset, Hants, Sussex, Norfolk, et cabeland, 
Scotland : Haddington, Edinburgh, Fife, Orkney and Shetland 
Islands, Bute, Ayr. Ireland: Dublin (Malahide, Croutse); “Pe 
(Strangford Lough, Belfast Lough). Not un . 0 
comosa J. Ag. (= P. stricta Grev.). Deyon Btyssoat uth, ioaes, 
cease Dorset (Studland) ; Northumberland (Berwick). Not 
mmon. 
"P. divaricata Kitz. Joppa, near Edinburgh; and Murlogh Bay, 
Rare. - 
P. subulata J. Ag. B Grigithsiana J. Ag. (= P. Griffithsiana 
Harv.). Coasts of Devon (Torquay); Dorset (Isle of Portland). 
re. 
P. Richardsoni Hook. Coast of Kirkeudbright (Colvend). Very 
e. 
FP; oe Grev. Coast of Argyle (Appin). Very r 
Var. B major J. Ag. (= P. Carmichaeliana Harv.). Coasts of Argyle 
(Appin) ; Bute (Little Cumbrae); Orkney (Skaill). Very rare 
