304 A LIST OF FRESH-WATEE ALG.E COLLECTED 



Zygogonium ERICETORUM, KiitZ. 



Mosses about Crag Lake and Haltwhistle. 



Vesiculifera Eothii, Hass. 

 Very common. 



BULBOCHET^ SETIGERA, Ar/. 



Pools near Crag Lake, &c. 



Cladophora glomerata. 



Common, chiefly in streams. 



Cladophora Brownii, Dillw. 



A plant, which I believe to be referable to this species, occurs 

 on damp rocks at the side of Hareshaw Burn. 



Cladophora flavescens, Roth. 

 Brockley Whins. 



Cladophora fracta, Fl. Dan. 

 Frequent. 



Coleochjete scutata, Breh. 



On submerged leaves, &c., Crag Lake, August, 186K 



Lyngbya zonata, [Web <& Morh.) 

 Ditch south of Crag Lake. 



Lyngbya muralis, Ag. 

 Common everywhere. 



Tolypothrix distorta, KiitZ. 



Abundant in the " stells" on Morden Carr. 



Oscillatorl^ tenuis, Ag. 



Ashburn and Hylton : Hareshaw. Probably common. 



