THE ALGM OF THE CLYDE SEA AREA. . 178 



Vaucheria spheerospora Nordst. f. dioica Kosenv. Seamill, Holmes. 

 Codium tomentosum Stackh. Little Cumbrae, Cor mack & Rankin. 



Ph^ophyce^:. 



Desmarestia viridis Lam. Little Cumbrae, Barton. Fairlie, 

 King. 



D. aculeatn Lam. Upper Loch Fyne, Turbyne. Ardrossan, 

 King. Heads of Ayr, MacGregor d Mathews. Gare Loch, Pearcey; 



Dictyosiphon fteniculaceus Grev. f. hispida Kjellm. Fairlie, 

 Holmes. 



I), hip pur oides Kiitz. Fintry, Bell, and Karnes Bays, Cumbrae. 

 Fairlie, Holmes. Whiting Bay, Arran, Patterson. 



D. mesogleea Aresch. Kilchattan Bay, Bute. Fairlie, Holmes. 



D. chordaria Aresch. Farland Point, Cumbrae. Fairlie and 



Portincross. 



Stictyosiphon subarticulattis Hauck. Fintry and Karnes Bays, 



Cumbrae. 



Punctaria latifolia Grev. f. laminarioides Holmes & Batt. Fintry 



Bay, Cumbrae. 



Sireblonemafasciculatum Thur. In the fronds of Castagnea zoster® 

 and C. virescens. Karnes Bay. Fintry Bay. 



*S. splurrieum Thur. In the fronds of Mesogleea nrmicularis. 

 Fairlie, Holmes. Karnes Bay, Cumbrae. 



Ectocarpus repens Pike. On Ceramium rubnim. Farland Point. 



E. irregularis Kiitz. Seamill, Holmes. 



F. globifer Kiitz. = E. insignis Crn. On the fronds of Castagnea 

 Griffithsiana. Lamlash Bay. 



E. arctus Kiitz. On Zostera. Karnes Bay, Carruthers. Fintry 

 Bay. Between Saltcoats and Fairlie, Holmes. 



E confervouh's Le Jol. Loch Goil, Pearcey. Little Cumbrae, 

 Barton. 

 ■ E. Landsburgii Harv. Kyles of Bute. 



Pylaiella liioralis Kjellm. Gare Loch, Cormack & Rankin. 

 Rothesay and Ardrossan, King. Loch Goil, Pearcey. 



P. litoralis i. compacta Kjellm. Seamill, Holmes. 



P. litoralis i.ferruginea Kjellm. Farland Point, Cumbrae, Boodle. 



Arthrocladia villosa Duby. Lamlash. 



Myriactis pulrinata Kiitz. On the receptacles of Halidrys sili- 

 qnosa ! Fintry Bay, Cumbrae. 



M. Aresehouqii = Elachista Areschougii Crn. On Himanthalia 



lorea. Farland Point, Cumbrae. 



If Myriactis is retained as a valid genus, characterised by the 

 absence of paraphyses, and the entire or partial immersion of the 

 basal portion of the parasite in the thallus of the host plant, then 

 both Elachista Areschougii Crn. and E. stellulata Aresch. must be 

 removed to it. With regard to the latter species, what Harvey has 

 figured (Phyc. Brit. tab. 261) and described as " paranemata with 

 short articulations" are really gametangia, as there are no true 

 paraphyses in this species. Areschoug correctly figures the spo- 

 rangia, and U. C. Sauvageau, in his very interesting paper, < Sur 



