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ALPHABETICAL INDEX OF THE 



Rhodomela lycopodioides. Summer. On the stems of 



Laminaria digitata. 

 Rhodomela subfusca. Spring and summer. On stones 



in pools, at low-water mark. Abundant. 

 Rhodymenia bifida. Summer. Mount Edgecumbe ; 



Whitsand Bay ; Torquay ; Exmouth. 

 Rhodymenia ciliata. Autumn and winter. Mount 



Edgecumbe ; under the Hoe ; Plymouth ; Torquay ; 



Exmouth. 



Rhodymenia crista ta. Summer. Parasitical on Lami- 

 naria digitata. Caithness. 



Rhodymenia jubata. Summer. In rocky and gravelly 

 pools. Very abundant. 



Rhodymenia laciniata. Summer and autumn. On 

 rocks and stones. Under the Hoe ; Bovisand. 

 Mewstone. 



Rhodymenia palmata. Summer. On rocks, and on 

 the stems of Laminaria digitata. Common. 



Rhodymenia Palmetta. Summer and autumn. Bovi- 

 sand ; Whitsand Bay ; Torquay. On the stems of 

 Laminaria digitata. 



Rivularia applanata. Summer. On rocks and stones 

 between tide-marks. 



Rivularia atra. Summer. On rocks and corallines. 



Rivularia nitida. Summer and autumn. South of 

 England and West of Ireland. 



