THE ALG^E OF GUERNSEY. 377 



HalopteriS filieina, Kutz. (Sphacelaria). Moulin Huet. Petit Bot. 



Vazon. Petit Port. L'Ancresse Bay, washed up. 

 Stypoeaulon SCOparium, Kutz. (Sphacelaria). Common. 

 Myrionema strangulans, Grev. Common. 



M. punctiforme, Harv. On Ceramium rubrum. Belgrave Bay. Eocquaine. 

 Aseoeyelus Leelaneherii, Mag. (Myrionema). Eather common. 

 Ralfsia elavata, Cm. Fermain, on limpets. Bordeaux. L'Ancresse Bay. 



Yazon. 

 R. verrucosa, Aresch. (E. deusta). Moulin Huet. Cobo. Grandes 



Eocques. Petit Bot, with plurilocular sporangia. 

 Stilophora rhizodes, /. Ag. Cobo. Grandes Eocques. 



Chordaria flagelliformis, c. Ag. Cobo. Lihou island. 



MeSOgloea vermieulata, Le Jol. Petit Bot. Cobo. Fermain. Bordeaux. 

 Liebmannia Leveillei, J. Ag. Bordeaux, one specimen. New to Britain. 

 Castagnea Vireseens, Thur. (Mesogloia). Fermain. Cobo. Eocquainc. 



Yale coast behind Eousse Tower. 

 Petrospongium Berkeleyi, Nag. (Leathesia). All round the coast at 



extreme low water mark. 

 Leathesia difformiS, Aresch. (L. tuberiforaais). Common. 

 Phyllitis Faseia, Kutz. (Laminaria). L'Ancresse Bay, in shallow rock 



pools at mid-tide level. 

 SeytOSiphon lomentarius, J. Ag. (Chorda). Generally distributed but 



rather rare. 

 Chorda filum, Stack. Common. 

 Laminaria saceharina, Lam. Common. 

 L. digitata, Edm. Common. 



SaCCOrhiza bulbosa, Be la Fgl. (Laminaria). Common. 

 Aglaozonia reptans, Kutz. (Zonariaparvula). Bordeaux. Vazon. 

 Zanardinia COllaris, Cm. (Zonaria). Yazon. 

 FUCUS vesiCUloSUS, Linn. Frequent. 

 F. serratUS, Linn. Common. 

 Aseophyllum nodosum, Le Jol. (Fucus). Generally distributed and 



common. 



Pelvetia eanalieulata, Bene. (Fucus). Common. 



Bifurearia tubereulata, Stack. (Pycnophycus). Frequent all round the 



coast. 



Himanthalea lorea, Lyng. Common. 



Halidpys siliquosa, Lyng. Common. 



Cystoseira erieoides, C. Ag. Occurs all round the coast in rock pools, but 



not very commonly. 

 C. granulata, C. Ag. Cobo. L'Ancresse Bay. 

 C. diseors, C. Ag. (C. fceniculacea). Fermain. Bordeaux. Lihou Island. 



L'Eree. Cobo. 

 C fibrosa, C. Ag. Common. 

 Dietyota diehotoma, Lam. Common. Var. implexa, /. Ag. (intricata, 



Ph. Br.) Bordeaux. Moulin Huet. Petit Port. 

 Padina pavonia, Gail. Cobo. Grandes Eocques. Eocquaine. 

 Dictyopteris polypodioides, Lam. (Haliseris). Fermain. Coast by 



Eousse Tower. 

 ErythrotPiehia earnea, /. Ag. (Bangia ceramicola). Near Bec-du-Ncz 



on a plant of Ceramium ciliatum at extreme low water mark. 



