184 BRITISH SEA- WEEDS. [^RhoclospermecB. 



the braiichlcts of an obovate shape, though on the whole 

 the plant is well marked by a level top or corymbose ap- 

 pearance of the branchlets. The capsules generally on the 

 sides of the ramuli, the favella3 binate and large in the axils ; 

 the colour rose-red. It is a very handsome plant, adhering 

 well to paper, and having, when dried, a glistering appear- 

 ance. The finest specimens I have seen were got by j\Iajor 

 Martin and myself, some of them on the wooden pier at 

 Ardrossan, and others on numerous specimens of Ascidia 

 riLst'icaj which had attached themselves to the walls of the 

 wet dock. It is found floating in the sea in Arran in 

 September. 



20. Callith AMNION SPONGIOSUM, Harvef/. 



Hab. On rocks and Algse. Annual. Summer. In Eng- 

 land, by Mrs. Griffiths, Miss "Warren, Mrs. Wyatt, Rev. Mr. 

 Horn, Mr. RoliloS", Mr. Ralfs, Mrs. Gulson, and Dr. Cocks; 

 in Ireland, by Mr. Templeton, Dr. Drummond, Professor 

 Harvey ; in Scotland, by Major Martin, West Kilbride ; at 

 Saltcoats and Largo in Fife, by D. L.; by Miss AVIiite in 

 Jersey. 



This is dark-coloured and closely matted, and not very 

 interesting in the state in which it is generally got by us in 

 the west, but I have good specimens from Mrs. Griffiths. 



