306 GUERMNSE Y. 
Cladophora refracta, Phyc. Brit. 
All round the coast. 
Cladophora arcta, Kutz. 
Bec du Nez. Cobo. 
(Cladophora lanosa, Kutz., occurs in Alderney.) 
Bryopsis hypnoides, Lam. 
Occurs all round the coast, but not very commonly. 
Bryopsis plumosa, C. Ag. 
Moulin Huet. Bordeaux. Spur Point. 
Codium adhaerens, C. Ag. 
Saints Bay, spreading over the vertical face of a rock at low- 
water mark. 
Codium tomentosum Stack. 
Very common. 
PHAEOPHYCEAE 
J.—EcTOCARPINAE. 
Desmarestia aculeata, Lam. 
Specimens washed up all round the coast. 
Desmarestia ligulata, Lam. 
Rather common. Grows luxuriantly at Cobo and Petit Bot 
Desmarestia viridis, Lam. 
Noted in Greville’s list. 
Dictyosiphon foeniculaceus, Grev. 
Noted in Greville’s list. 
Litosiphon pusillus, Harv. 
Parasitic on Chorda filum. Fermain. Belgrave Bay. Bordeaux. 
(Stictyosiphon Griffithsianus, Holm. & Batt. (Zctocarpus brachiatus), 
occurs in Alderney.) 
Punctaria plantaginea, Grev. 
Cobo. 
Punctaria latifolia, Grev. 
Petit Bot. 
Myriotrichia filiformis, Phyc. Brit. 
Parasitic on Scytosiphon lomentarius ; rather common. 
