132 BRITISH SEA- WEEDS. \_Melanos]perme(S . 



that are cast out upon the shore are often hoary with Cr'ma 

 geuicidata , a rare zoophyte, though not showy; somewhat 

 like the very common Crisia ehurnea. 



Genus X. SPOEOCHNUS, Agardh. 



Generic Character. Frond fihform, soUd, celhdar, the axis 

 more dense, fructification lateral, crested, stalked ; receptacles 

 composed of horizontal, branching filaments, whorled round a 

 central axis, and producing obovate spores. — The name is from 

 two Greek words, signifying a seed and wool^ because tufts of 

 fibres accompany the fructification. — Harvey. 



1. Sporochnus peduxculatus, Ag. (Plate Y. fig. 17.) 

 Hab. On submarine rocks in deep water. Rare. Annual. 

 Summer and autumn. Anglesea, Eev. H. Davis; Exmouth, 

 Mrs. Gulson; Piley, Mrs. Gatty; Killiney, Professor Har- 

 vey; Belfast, Mr. \Y. Thompson. Till lately it had been 

 found in Scotland only by Mr. Ilassall at Prestonpans ; but 

 I have before me a finely-tufted specimen, dredged by the 

 llev. Mr. Pollexfen in Kirkwall Bay, Orkney, and several 

 specimens, in different stages of growth, dredged by Major 

 Martin, in Lamlash Bay, Arran. I have learned that beau- 

 tiful specimens of it were dredged lately in Lamlash Bay by 



