SEA WEEDS. 307 
Asperococcus echinatus, Grey. 
Belgrave Bay, plentiful. 
Asperococcus bullosus, Lam. (4. Zurnevi.) 
Rocquaine Bay, in pools near the Trinity Houses. 
Streblonema fasciculatum, Thur. 
Parasitic on Castagnea virescens, Fermain Point. 
Streblonema velutinum, Thur. (£/achista.) 
Cobo. 
Streblonema Zanardinii, Crn. 
Parasitic on Chylocladia kaliformis. Belgrave Bay, not uncom- 
mon  Fermain, one specimen. When I discovered this species in 
1894 it was new to Britain. 
Ectocarpus pusillus, Harv. 
Petit Port. 
Ectocarpus virescens, Thur. 
In several places between Fermain Point and Jerbourg. 
Ectocarpus secundus, Kutz. 
Cobo. 
Ectocarpus confervoides, Le Jol. (£. szliculosus.) 
Common on all parts of the coast. 
Ectocarpus fasciculatus, Harv. 
Cobo. Fermain. Bordeaux. Petit Bot. 
Ectocarpus granulosus, C. Ag. 
Petit Port. 
Ectocarpus tomentosus, Lyng. 
Not uncommon all round the coast. 
Pylaiella litoralis, Kjell. (Zctocarpus.) 
Common on Fuci between tide-marks. 
Myriactis pulvinata, Kutz. (£/achista attenuata.) 
Bordeaux. Fermain Point. Lihou Island. 
Elachista stellulata, Aresch. 
Fermain, growing on Dictyota. 
Elachista scutulata, Duby. 
Fermain. Grandes Rocques. Bordeaux. 
Elachista flaccida, Aresch. 
’ Grandes Rocques. Petit Port. 
