MARINE ALGA OF THE L.M.B.C. DISTRICT. 5 
Leicester, 24 are mentioned by Marrat. In the present 
report seven species are recorded as occurring in the 
district, though not included, so far as I am aware, in 
previous catalogues, published or unpublished. 
Species recorded by Marrat, or mentioned in his lists as 
having been found by others, are distinguished by having 
(M) appended to them after the locality; those found by 
Leicester and by myself by (L) and (G) respectively. 
Series A. RHODOPHYCES. 
Order I. FLORIDEA. 
Family. PORPHYRIDZ. 
Bangia fusco-purpurea, Lyngb. 
At the roots of Polysiphonia and Ceramium (M). 
Not uncommon at the north end of Puffin Island (G). 
Porphyra laciniata, Ag. 
P. vulgaris, Harvey. 
Plentifully distributed (M). P. luciniata has been 
considered as a variety of P. vulgaris. Marrat, who 
records both P. vulgaris and P. laciniata, mentions 
. having found the latter occasionally as much as half 
an inch wide. Puffin I., 1865 (M), 1889 (G). 
Family. SQUAMARIDA. 
Peyssonnelia dubyt. Crouan. 
Locality not recorded (L). 
Petrocelis pellita, J. Ag. 
Cruoria pellita, Harvey. 
South shore, Hilbre I. and New Brighton (M). 
Family. WRANGELID. 
Chantransia virgulata, Thur. 
Callithamnion virgulatum, Harvey. 
On Cerannuwm rubrum, Eastham (M). Puffin I. (G). 
