

134 : LIVERPOOL BIOLOGICAL SOCIETY. 
C. tetragonum, Ag., var. genuinum. 
Coast generally (M). Puffin I. (G). 
C. tetragonum, Ag., var. brachiatum. 
Callithamnion brachiatum, Harvey. 
Coast generally (M). Puffin I. (G). 
C. corymbosum, Ag. 
Locality not recorded (M). Rather plentiful at 
jepianm Jl (Ep) 
C. byssoidewm, Arn. 
Hilbre I. (M). 
C. seirospermum, Griff. 
Setrospora griffithsiana, Harvey. 
Hilbre I., parasitic on Sphacelaria scoparia (M). 
C. granulatum, Ag. 
C. spongiosum, Harvey. 
Coast generally (M). 
C. brodiei, Harv. 
Isle of Man and coast generally (M). 
C. rosewm, Lyngb. 
Not rare, but locally not recorded (M). 
C. hookeri, Ag. 
Not uncommon in pools at New Brighton (M). 
C. daveswi, Lyngb. 
On Ceramium rubrum at Rock Ferry, and on Clado- 
stephus spongiosus on North shore (M). 
Pleonosporium borreri, Nag. 
Callithammion borrert, Harvey. 
Common on the South shore, and at Hilbre I. and 
New Brighton (M). Puffin I. (G). 
Grifithsia barbata, Ag. 
New Brighton (M). 
G. setacea, Ag. 
Isle of Man and Puffin and Hilbre Is., at low water 
(M and G). 
artis 5 
