A CATALOGUE OF THE BRITISH MARINE ALG 57 
Yorks. (Scarborough, weve Whitby) ; Durham (Sunderland) ; 
Northumberland (Cullercoats, Alnm outh, Holy Island, Berwick) ; 
Isle of Man; Cheshire (Hilbre Island). Wales: Anglesea (Hilbre 
Island). Scotland: Berwicks. (Burnmouth, Eyemouth); Had- 
dington (Dunbar, North Berwick); Edinburgh (Jo f 
(Kinghorn, Elie, Earlsferry); Forfar (Arbroath); Kincardine 
(Stonehaven) ; Aberdeen (Peterhead) ; is le { orne, 
Co. C 
Balbriggan, &e., Go. "Da blin ; Seaman ea Belfast ere 
0. Down; Antrim coast; Roundstone, Co. Galway; Kilkee, Co. 
Clare. Channel Islands (Jersey, ce anes ey, Sark). 
Common and abundant everywhere on the rocky parts of the 
British ence — Var. umbilicalis J, Ag. Coasts Cornwall (Fal- 
mouth); Devon (Torquay, Sidmouth); Dorset (Swanage) ; Kent 
y» 
(Sheerness) ; abeitant getup ad Island, Berwick). Scotlan 
Orkney Islands. Ireland: ae Bay, a ong el Jelacits 
P. amethystea Kiitz. on ashi; Edin 
burgh (Joppa) ; hg fe ees (Arbroath). Coast of 
Ireland. Very ra 
gripeie Dretoperma Roseny. 
P. a Ag. a typica Rosenv. ‘Coasts of Northumberland 
(Bervic) “Bute (Isle of Cumbrae); Orkney pee Figs pate 
eland : Murlough Bay and Cushendall, Co. Ant Locally 
osm n spring and early summer, but hitherto rare from 
only a few localities in Scotland and Northern England and Ire- 
and.—8 amplissima Roseny. (= Diploderma amplissimum Kjellm.). 
Coast of Bute (Isle of Cumbrae). Ireland: Clontarf, Co. Dublin. 
y Yare.—y tenu mca 4 Rosen = nae tenuissimum Strémf.). 
Coast of Bute (Isle of Cumbrae). Viay e. —? abyssicola Rosenv. 
(= Porphyra abyssicola Kj ‘ellm m.). Coasts cal "Bute (Isle of Cumbrae) 
and the Orkney Islands (Kirkwall). Locally abundant. 
Suborder HurLoripEz. 
Series Nemationin2 Schm. 
Fam. Heiuinrnociapiacez Schm. 
Tribe AcRocHETIER. 
Gen. 152. Cotaconema Batt., non Schm. 
C. Bonnemaisonie Batt. Coasts of Devon (Plymouth) and 
Northumberland (Berwick). bist oy and always parasitic in 
a onds of Bonnemaisonia aspara 
C. reticulatum Batt. Coasts of eek (Plymouth) and Donegal 
St Pay): Very rare. Parasitic in the fronds of Desmarestia 
Wek: or Botany, Oot. 1902.] 
