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ALPHABETICAL INDEX OF THE 



Ectocarpus Hincksii. Summer. Plymouth ; Torbay ; 

 Torquay. Aberdeen. Mount's Bay. 



Ectocarpus Landsburgii. Summer. Dredged in deep 

 water. Isle of Arran. Roundstone Bay. 



Ectocarpus littoralis. Spring and summer. Abun- 

 dant everywhere. 



Ectocarpus longifructus. Summer. Parasitical on 

 Algao. Skaill, Orkney. 



Ectocarpus Mertensii. Spring. Firestone Bay; Whit- 

 sand Bay ; Salcombe ; Torbay ; Ilfracombe. 



Ectocarpus pusillus. Summer and autumn. Parasiti- 

 cal on the smaller Algae. Plymouth; Land's End ; 

 Torquay. 



Ectocarpus siliculosus. Spring and autumn. Parasi- 

 tical on other Algae. Plymouth ; Torquay ; Jersey. 



Ectocarpus sphaerophorus. Spring. Parasitical on 

 other Algae. Plymouth ; Torquay ; &c. 



Ectocarpus tomentosus. Spring. Parasitical on Fuci. 

 Firestone Bay ; Mount Edgecumbe ; Torquay ; &c. 



Elachistea curta. Summer. On Fuci. Swansea. 



Elachistea flaccida. Summer and autumn. Parasiti- 

 cal on Cystoseira fibrosa. Plymouth ; Torquay. 



Elachistea fucicola. Summer and autumn. Parasitical 

 on Fuci. 



Elachistea pulvinata. Summer and autumn. Parasi- 

 tical on Cystoseira ericoides. 



