110 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Polysiphonia sertularioides, J. Ag. 

 (P. jpulvinata, Eeport I.) 



Puffin I., Eastham, New Brighton, Hilbre I. 



All these localities are on Marrat's authority, 



but I have not been able to confirm his record. 

 P. fibrata, Harv. 



Puffin I. !, Hilbre I. !, I. of Man. 

 P. urceolata, Grev. 



Puffin I.!, 1. of Man. 

 var. patens, J. Ag. 



Puffin I. ! 

 var. formosa, J. Ag. 



Puffin I. ! 

 P. elongella, Harv. 



Puffin I. !, Anglesea, I. of Man. 

 P. elongata, Grev. 



Puffin I. !, I. of Man ! 

 P. violacea, Wyatt. 



Carnarvon, I. of Man. 

 P. fibrillosa, Grev. 



Anglesea!, I. of Man. 

 P. fastigiata, Grev. 



Puffin I.!, Hilbre I.!, Anglesea!, I. of Man! 



Mersey ! 

 This species is an almost constant epiphyte on 

 Ascophyllum nodosum ; I have found it however more than 

 once on Fucus vesiculosus. Some notes of observations 

 which I made on the minute structure of the frond and 

 on the origin and development of the tetraspores will be 

 published in an early number of the Journal of Botany. 

 P. atroruhescens, Grev. 



I. of Man. 



