304 GCERNSE Y. 
Symploca hydnoides, Kutz. (Calothrix semiplena.) 
Fermain : common on corallines near high-water mark. Grandes 
Rocques. Cobo, frequent. 
Calothrix confervicola, C. Ag. 
Parasitic on filamentous algae. Common in autumn on all parts 
of the coast. 
Calothrix scopulorum, C. Ag. 
Lihou Island. Cobo. Bec du Nez. 
Isactis plana, Thur. (Avularia, Harv.) 
Vazon Bay. 
Rivularia Biasolettiana, Meneg. (Schizosiphon Warreniae.) 
Rock pools at high-water mark, Fermain Point. Dripping cliff, 
Petit Port. 
Rivularia atra, Roth. 
Common on rocks: resembling black pellets of shot. 
Rivularia nitida, C. Ag. (2. plicaza.) 
On wet rocks in a cave, Petit Port. 
Rivularia bullata, Berk. (2. n7tida.) 
Common all round the coast. 
Anabaena torulosa, Lag. (Sphaerozyga Carmichaelit.) 
Cobo : frequent in pools at half-tide level. 
CHLOROPHYCEAE. 
Enteromorpha clathrata, J. Ag. 
Belgrave Bay. Bordeaux. St. Martin’s Point. Grandes 
Rocques. 
Enteromorpha percursa, C. Ag. 
In a brackish pool at Pulias. 
Enteromorpha ramulosa, Harv. 
Bordeaux, scarce. 
Enteromorpha compressa, Grev. 
Very cominon everywhere near high-water mark, 
Enteromorpha Linza, J. Ag. (U/va.) 
Found all round the coast: often abundant where it occurs, as 
at Belgrave Bay. 
