A CATALOGUE OF THE BRITISH MARINE ALG.E 99 



Devon (Plymouth, Sidmouth) ; Dorset (Chapman's Pool) ; Sussex 

 (Bognor) ; Northumberland (Berwick). Bare. 



R. parasitica Batt. Coasts of Devon (Plymouth) ; Northumber- 

 land (Berwick); Haddington (Dunbar) ; Fife (Kincraig); Forfar 

 (Arbroath). Ireland : Antrim coast. Common on the coasts of 

 Scotland, Northern England, and Ireland. 



Gen. 258. RHODOPHYSEMA Batt. 



R. Georgii Batt. Coasts of Cornwall (Scilly Islands) ; Devon 

 (Torquay) ; Dorset (Weymouth). Very rare. 



Gen. 259. ERYTHRODERMIS Batt. 



E. Alleni Batt. Coast of Devon (Plymouth). Very rare, and 

 only obtained by dredging. 



EXCLUDED SPECIES. 

 WAIFS. 



Cystoseira barbata Ag. San/assum bacciferum Ag. S. vulgar e Ag. 

 Dasya Mulleri Ag. Plocamium biserratum Dickie. Hypnaa musci- 

 forrnis Lam. Gelidium cartilagineum Gaill. Suliria vittata J. Ag. 



DOUBTFUL SPECIES. 



Cladophora Gattya, Harv. Hamatocelis fissurata Crn. (=the 

 basal disc of Dumontia filiformis Grev. ?). 



CHANGES OF NOMENCLATURE. 



Phaophila Floridearum Hauck = P. dendroides Batt. 

 Epicladia Flustra, Bke. = Endoderma Flustra Batt. 

 Pogotrichum Jiliforme Rke. Litosiphon ftliformis Batt. 

 Desmotrichum balticum Kiitz. = Punctaria baltica Batt. 

 Phycolapathum crispatum Kiitz. = Punctaria crispata Batt. 

 Endodictyon infestians Gran. = Streblonema infestians Batt. 

 Ectocarpus virescens Thur. = E. Mitchell a Harv. 

 Ascocyclus globosus Rke. = Hecatonema ylobosum Batt. 

 Myrionema Liechtensternii Hauck = H. Liechtensternii Batt. 

 Carpomitra Cabrerce Kiitz. = C. costata Batt. 

 SSaccorhiza bulbosa De la Pyl. = 5. poly ~sc hides Batt. 

 Dictyopteris polypodioides Ag. = D. inembranacea Batt. 

 Callithamnion lepadicola J. Ag. = Erythrotrichia Welwitschii Batt. 

 Chantransia trifila Buffh. = Acrochatium trijiluin Batt. 

 Chantransia corymbifera Thur. = Acrochatium corymbiferum Batt, 

 Nemalion lubricum Duby = N. elmintlioides Batt. 

 Gigartina mamillosa J. Ag. = G. stellata Batt. 

 Phyllopliora rubens Grev. = P. epiphylla Batt. 

 Cystocloniitm purpurascens Kiitz. C. purpureum Batt. 

 Catenella Opuntia Grev. = C. repens Batt. 

 Calliblepharis Jubata Kiitz , = (7. lanceolata Batt. 

 Chylocladia ovalis Hook. = C. ovatus Batt. 

 Nitophyllum laceratum Grev. = N. ramosum Batt. 

 Delesseria sinuosa Lam. = Phycodrys rubens Batt. 

 Halopithys pinastroides Kiitz. = H. incurvus Batt. 



