228 TRANSACTIONS, NATURAL HISTORY SOCIETY OF GLASGOW. 



species, whose life-history I had previously worked 

 out,* and was able to confirm my previous account 

 in all particulars. 



U. flacca, Holm, et Batt. (Lynghya flacca et 

 L. Carmichaelii, Phyc. Brit). — This species, wliich I 

 found in rock-pools and on old Fiicus-ironds, has 

 been placed by Holmes and Batters provisionally 

 in the genus Urospora, Aresch I am able to con- 

 firm this location of the species, for I found that 

 it also produced tailed zoospores, although I was 

 unable, owing to an insufficiency of material in the 

 spore condition, to trace the life-history of these. 

 The species had also been found by Carmichael at 

 Appin. 



Chsetomorpha linum, Kiitz. — A few filaments of 

 this species were found in deep rock-pools near the 

 Falls of Lora. 



Ch. tortuosa. Kiitz. — On Corallina officinalis near 

 the Falls of Lora. 



Ch. litorea, Holm, et Batt. {Conferva litorea, 

 Phyc. Brit.).— Rare, in Loch Etive. "On sand and 

 mud, Appin" (Carmichael). 



Ch. melagonium, Kiitz. — A few filaments of this 

 large species were found in rock-pools in the Sound 

 of Kerrara. 



Rhizoclonium riparium, Harv.— " Appin " (Car- 

 michael). Common in the district generally. 



Rh. arenosum, Kiitz. — " On sand, Appin " 

 {Carmichael). 



Cladophora rupestris, Kiitz. — Abundant on rocks, 

 passim. 



C. utriculosa, Kiitz., var laetevirens, Hauck. 

 (Cladophora Icetevirens, Phyc. Brit.). — Abundant in 

 Loch Etive. 



C. lanosa, Kiitz., var. uncialis, Thur. — On Poly ides 

 7-otundus from islands near Lismore. 



C. arcta, Kiitz. — Fairly common at Ardchattan 

 and elsewhere. 



• Revised List of the Marine Algie of the L. M. B. C. District, in Trans. 

 Biol. Sac., Liverpool, vol. v. 



