298 BRITISH sea-tvt:eds. {Bhodospermeoi. 



ramuli, at times straw-coloured, but more generally rosy, 

 becoming purple when dried. Mr. Borrer thinks that it 

 resembles Fol. hyssoides) Mrs. Griffiths considers it as more 

 like Fol. Brodicei, To us it seems, in a young fresh rosy 

 state, to come nearer Poli/sijjJionia elongella, but it loses 

 much of the resemblance when it is dried. It is very com- 

 mon in the island of Arran, and not uncommon on the coast 

 of Ayrshire. 



17. PoLYSiPHONiA YiOLACEA, GrevUU, 



Hab. On rocks and stones and Alg3c near low-water 

 mark. Annual. May and June. Tirst discovered in 

 Britain by Mrs. Griffiths ; Talmouth, Miss Warren ; Car- 

 narvon, Mr. Ralfs ; Plymouth, Mr. EohlofF ; Belfast Lough, 

 Dr. Drummond ; Howth, Miss Gower ; Kerry, Mr. Andrews; 

 Eoundstone, by Mr. M*'Calla. Got occasionally on the 

 coast of Ayrshire. I have some fine specimens from Mrs. 

 Griffiths and Mr. Ealfs. See a beautiful figure of it in 

 ' Phycologia Britannica,' PI. ccix. 



18. PoLYSiPHONiA FiBRATA, llarvey. 



^ Hab. On rocks, shells, and Alga3, near low-water mark. 

 Annual. Summer and autumn. Common. 



It is articulated throughout, and the joints marked with 

 two striae. At Ardrossan it is found abundantly on Chorda 



