BRITISH MARINE ALGiE. 



103 



Elachistea scutulata. Summer. Parasitical on Hi- 



manthalia Lorea. 

 Elachistea stellulata. Summer. Parasitical on Dicty- 



ota dichotoma. Torquay. 

 Elachistea velutina. Summer. Parasitical on Himan- 



thalia Lorea. 



Enteromorpha clathrata. Summer. Whitsand Bay ; 

 Torquay ; Exmouth. 



Enteromorpha compressa. Spring and summer. Abun- 

 dant everywhere. 



Enteromorpha Oornucopise. Summer. On corallines, 

 &c, in rocky pools left by the tide. Orkney. 



Enteromorpha erecta. Summer. On rocks in the sea. 

 Not uncommon. 



Enteromorpha intestinalis. Summer. Yery common. 



Enteromorpha Hopkirkii. Summer and autumn. 

 Torbay. Carrickfergus. 



Enteromorpha Linkiana. Summer. Appin. 



Enteromorpha percursa. Spring and summer. Tor 

 Abbey. Appin. Clontarf. And on muddy sea- 

 shores. 



Enteromorpha Ealfsii. Summer. Bangor, North 

 Wales. 



Enteromorpha ramulosa. Spring. Rocks and stones 

 between tide-marks. 



