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 A HISTORY OF KENT GigartinacEjE {continued) Phyllophora rubens, Grev. Folkestone, Dover, S. Fore- land, Deal, Ramsgate — membranifolia, J. Ag. Folkestone, Deal, Dover ; a narrow form occurs at Deal Gymnogongrus GrifEthsiE, Mart. Sandgate (E. M. H.) — Norvegicus, J. Ag. Dover, S. Foreland, Deal Ahnfeldtia plicata, Fries. Folkestone, Deal, Chatham Actinococcus peltaeformis, Schmitz. Deal Colacolepis incrustans, Schmitz. Deal Callophyllis laciniata, Kiitz. Deal Rhodophyllidace^ Cystoclonium purpurascens, Kiitz. Dover, Deal Catenella Opuntia, Grev. Dover Rhodophyllis bifida, Kiitz. Deal — appendiculata, J. Ag. Deal Sphaerococcus coronopifolius, Grev. Deal Gracilaria confervoides, Grev. Deal Calliblepharis ciliata, Kiitz. Dover, Deal, Folkestone, Ramsgate — jubata, Kiitz. Folkestone Rhodymenia palmetta, Grev. f. typica, Batt. Deal f. flabelliformis, Kiitz. Deal — corallicola, Ardiss. Deal — palmata, Grev. Folkestone, Sandgate, Deal Cordylecladia erecta, J. Ag. Folkestone Lomentaria articulata, Lyngb. Dover, Deal, Folkestone, Sandgate — clavellosa, GaiO. Deal — rosea, Thur. Ramsgate (T. H. B.) Chylocladia kaliformis, Grev. Folkestone Plocamium coccineum, Lyngb. Folkestone, Dover, Deal, Chatham Nitophyllum laceratum, Grev. Deal Rhodophyllidace^ (continued) Nitophyllum Gmelini, Harv. Deal Gonimophyllum Buffhami, Batt. Deal Delesseria alata, Lamour. Folkestone, S. Foreland, Chatham — Hypoglossum, Lamour. Folkestone, Deal — ruscifolia, Lamour. Dover, Deal ■ — sinuosa, Lamour. Folke- stone — sanguinea, Lamour. Folke- stone, Deal, Chatham RH0D0MELACE.ffi: Rhodomela subfusca, C. Ag. Folkestone, S. Foreland, Chatham Laurencia caespitosa, Lamour. Folkestone, Sandgate — pinnatifida, Lamour. Folke- stone, Dover, S. Foreland Halopithys pinastroides, Kiitz. Deal, Folkestone Chondria dasyphylla, C. Ag. Folkestone, Dover, Deal Polysiphonia elongata, Grev. Deal — fibrillosa, Grev. N . Fore- land — fastigiata, Grev. Deal, Folkestone, Sandgate — atrorubescens, Grev. Deal — nigrescens, Grev. Folke- stone, Dover, S. Foreland, Ramsgate var. affinis, J. Ag. Rams- gate — violacea, Grev. Kent — Brodisi, Grev. var. typica. Holmes and Batt. Folkestone Brongniartella byssoides, Bory. S. Foreland Heterosiphonia coccinea, Schmitz. Folkestone, Deal CeRAMIACEjS Spermothamnion Turneri, Aresch. var. monoica, Schm. Deal — strictum, Ard. Sandgate Griffithsia barbata, C. Ag. Folkestone — corallina, C. Ag. Folkestone — setacea, C. Ag. S. Foreland, Folkestone Ceramiace^ {continued) Halurus equisetifolius, Kiitz. Folkestone, Deal Rhodochorton floridulum, Nag. 5. Foreland Callithamnion polyspermum, C. Ag. Folkestone — granulatum, C. Ag. Folke- stone — roseum, Harv. Folkestone — corymbosum, Lyngb. Kent (E. B.) Plumaria elegans, Schm. Folke- stone, Dover, S. Foreland Antithamnion Plumula, Thur. Folkestone Ceramium rubrum, C. Ag. Folkestone, Sandgate, Deal, Chatham — diaphanum, Roth. S. Fore- land — Deslongchampsii, Chauv. Deal — flabelligerum, C. Ag. Folke- stone, Dover, S. Foreland — cihatum, Ducluz. Chatham — gracilUmum, Harv. Folke- stone Cryptonemiace^ Gloiosiphonia capillaris, Carm Sheerness Dumontia filiformis, Grev Folkestone, Deal Dilsea edulis, Stackh. S. Fore land Furcellaria fastigiata, Lamour Folkestone, Dover, Deal Chatham Rhizophyllidace^ Polyides rotundus, Grev. Folkestone, Dover, Deal Petrocelis cruenta, J. Ag. Folkestone Hi LDEN BRAN DTIACEjE Hildenbrandtia prototypus, Nardo. Deal CoRALLINACEiC Melobesia zonalis, Fosl. Deal — corticiformis, Kiitz. Deal, Folkestone Lithothamnion polymorphum, Aresch. Folkestone, Sand- gate, Deal Corallina officinalis, Linn. Folkestone, Sandgate, Dover, Deal, Chatham, — rubens, Ellis et Sol. Folke- stone CHARACE^. Chara fragilis Desv. type has been noted in four localities, and var. Hedwigii Kuetz. in three. C. hispida, L. is not uncommon near the sea and tidal waters ; what we believe to be the var. rudis (Braun) was found by Mr. Dowker at Ham Ponds. C. vulgaris, L., by far the most frequent species in the county, has occurred in every district, either as the type or var. longihracteata Kuetz. or the submaritime var. -papillata Wallr. The only known stations 76