



MARINE ALG OF THE UL.M.B.C. DISTRICT. 153 
C. litorea, Harv. 
South shore and Eastham (M).. 
C. sutoria, Berk. 
Hilbre I. (M). 
C. youngana, Dilln. 
Bromborough and Wallasey Pools, and the life-boat, 
New Brighton (M). 
[The genus Conferva is one into which many dubious 
forms have been placed from time immemorial. I insert 
the above mentioned species here because they have been 
recorded by Marrat; and while they may be good species, 
there is the possibility that some of them may be merely 
varieties of one species under different conditions. | 
Series D. CYANOPHYCEA. 
Order VI. SCHIZOPHYCEA., 
Family. Nostocipa. 
Calothrix confervicola, Ag. 
_ Common on species of Ceramiwm (M). 
C. scopulorum, Ag. 
Generally distributed (M). 
Riwwularia plicata, Carm. 
/ Generally distributed (M). 
R. atra, Roth. 
Generally distributed at Hilbre I. and South shore 
(M). 
fi. hiasolettuana, Menegh. 
Schizosiphon warrene, Harvey. 
On mud-covered rocks (M). 
Spherozyga carmichelu, Harv. 
Eastham (M). 
