NOTES ON THE ALG^ OF THE KILDONAN SHORE, ARRAN. 171 



Comparing this part of the coast of Arran with 

 the west coast about Blackwater-foot and Druma- 

 doon-point, I found at Kildonan a much larger 

 quantity of some of the more deHcate species, but 

 not so great a variety. They grew more abundantly 

 at Kildonan and could be more easily collected, but 

 some species may be found at Drumadoon which 

 are not found at Kildonan ; and although Kildonan 

 is a splendid field for the study of marine objects, 

 both animal and vegetable, yet a visit to Drumadoon, 

 after a strong south-west gale, would well repay the 

 trouble by the greater variety likely to be found 

 there. 



The following is a list, arranged in the usual 

 order of classification, of those Algce seen or collected : 



MELANOSPERME^. 



Halidrys siliquosa. — Abundant, and varying much in size. 



Fucus vesiculosxis. \ —These species are abundant, as on 



F. serratiLS. f nearly all our coasts, and very prominent 



F. nodosiis. ( from their luxuriant growth, some of 



F. canal iculat us. ) the air-cells of F. nodosus being as large 

 as a hen's ef^g. 



F. cerano ides.— Not common. I may remark that this species 

 is found abundantly at Fairlie, on the Ayrshire coast. 



Desinarestia aculeata. — Frequent. 



Alaria esculenta. — Frequent, and in good condition for show- 

 ing the spore-bearing parts of the fronds. 



Laminarla digitata. \ 



L. hulbosa. > — Common, and of large size. 



L. saccliarina. ' 



Chorda flluni. — Abundant. 



Dlctyota dicliotoma. — Frequent, but not well-grown. 



Dlctyosiphon fceniculacexis. — Frequent. 



AsperococciLs compressits. — Common. 



A. ecJimatus. — Common. 



Chordarla flag ell ifor mis. — Common. 



Mesogloia verniicularis. — Common. 



Cladostephus verticillatus. — Frequent. 



C. sporigriosjts.— Frequent; may be mistaken for Codimn, 



Sphacelaria cirrhosa. — Frequent, appearing as round balls 

 floating in the sea. 



Ectocarpus. — Several species of this genus abundant. I 

 collected some of them, but did not name them. 



