THE ALG^E OF GUERNSEY. 379 



Plocamium eoeeineum, Lyng. Occurs in all parts, but not commonly. 



Nitophyllum uneinatum, J. Ag. Bordeaux. 



N. laeeratum, Grcv. Bather common. 



N. reptans, Cm. Petit Port, growing on Lithothamnion polymorphum. 



N. punetatum, Grcv. Cobo. Var. ocellatum. Petit Bot. Cobo. Moulin 



Huet, 

 N. Hillise, Grev. Fermain, at extreme low water mark. 

 Delesseria alata, Lam. Frequent. 

 D. hypoglossum, Lam. Here and there all round the coast, but not common. 



Usually a pale narrow form. 

 D. PUSCifolia, Lam. Common. 

 D. sinuosa, Lam. Petit Bot. Vazon. L'Ancresse Bay. Cast up at Moulin 



Huet in great abundance. 

 D. sanguinea, Lam. Frequently washed up ; growing specimens mostly 



small. 

 BonnemaiSOllia asparagoid.es, C Ag. A small specimen washed in at 



Petit Bot Bay. 

 Rhodomela SUDfusea, C. Ag. Fermain. Bordeaux. Grandes Eocques. 

 Laureneia Obtusa, Lam. Cobo. Bocquaine. Bordeaux. Fermain. 

 L. hybrida, Lcnorm. (L. csespitosa). Common. 

 L. pinnatifida, Lam. Very common. 

 Chondria tenuissima, C. Ag. (Laureneia). Belgrave Bay, plentiful. 



Cobo. 

 C dasyphylla, C. Ag. Fermain. Petit Bot. Vale coast. Cobo. 

 Polysiphonia sertularioides, /. Ag. (P. pulvinata). Petit Port. Spur 



Point. 

 P. fibrata, LLarv. Common. 

 P. UPCeolata, Grcv. Petit Bot. 

 P. Violaeea, Wyatt. Eather common. 

 P. opaea, Zan. Petit Port, in sand at mid-tide level, (f. simplicior). New 



to Britain. 

 P. fastigiata, Grcv. Common. 



P. simulans, Saw. Fermain. Moulin Huet. Spur Point. 

 P. atPO-rubeseens, Grev. Petit Port. Vazon. 



P. SUbulifera, LLarv. Belgrave Bay, in considerable quantity. Petit Bot. 

 P. Obseura, •/. Ag. Vazon Bay, in crevices of rocks at low water mark. 

 P. nigreseens, Grcv. Cobo. Petit Port. Fermain. 

 P. byssoides, Grev. Frequent all round the coast. 

 P. BPOdisei, Grev. Petit Bot. Cobo. Fermain. 

 P. thuyoides, LLarv. (Eytiphlaea). Moulin Huet. Fermain. Petit Port. 



Vazon. 

 P. fPUtieulosa, Spreng. (Eytiphla?a) . Common. 

 Dasya arbuseula, 0. Ag. Fermain. Bec-du-Nez. Cobo. 

 D. eoeeinea, G. Ag. Eather common. 

 Sphondylothamnion multifidum, Nag. (Wrangelia). Here and there 



all round the coast. 



SpePmothamnion Turneri, Aresch. (Callithamnion). Eocquaine. Bor- 

 deaux. Fermain. Grandes Eocques. 



Ptilothamnion pluma, Thur. (Callithamnion). Petit Bot, on Laminaria 

 stem-;. 



