BRITISH MARINE ALGiE. 



Ill 



Nitophyllum Bonnemaisoni. Summer. On the stems 



of Laminaria digitata. Torquay and Ilfracombe. 



Youghal. Bute. 

 Nitophjllum Gmelini. Summer. Under the Hoe ; 



Beggar's Island ; Mount Edgecumbe ; Plymouth. 

 Nitophyllum Hilliae. Summer. Under the Hoe ; 



Mount Edgecumbe ; Firestone Bay ; Plymouth. 

 Nitophyllum laceratum. Summer and autumn. Bo- 



visand ; Mount Edgecumbe ; Beggar's Island ; 



Plymouth. 



Nitophyllum punctatum. Summer. Mount Edge- 

 cumbe ; Redding Point ; Plymouth ; Torquay and 

 Sidmouth. 



Nitophyllum versicolor. Summer. Ilfracombe; Mine- 

 head. 



Ochlocelete Hystrix. Summer. On stems in a lake 



of brackish water, Waxeham, Dorset. 

 Odonthalia dentata. Summer. On rocks in the sea. 



On the shores of the north of England, Scotland, 



and Ireland. 



Oscillatoria insignis. Summer. In a brackish ditch, 

 Shirehampton, Bristol. 



Oscillatoria littoralis. Summer. With the preceding. 



Oscillatoria nigro-viridis. Summer. With the preced- 

 ing. 



