12 LIVERPOOL BIOLOGICAL SOCIETY. 
Family. DELESSERIIDZ. 
Nitophyllum punctatum, Harv. 
Rarely at New Brighton (M). 
N. laceratwm, Grev. 
Generally (M). 
Delesseria hypoglossum, Lamour. 
Hilbre and Puffin Is., Isle of Man, Welsh coast (M). 
D. ruscifolia, Lamour. 
Isle of Man (M). 
D. alata, Lamour. 
Hilbre I., Hoylake, Isle of Man, and Anglesey (M). 
Very plentiful at Puffin I. (MandG). Marrat notes 
the finding of a green variety; but I have found 
many specimens with some fronds green and others 
intermediate between that and the natural colour on 
the same plant, the variation in the colouring being 
obviously due to decay, disease or bleaching. 
D. sinuosa, Lamour. 
Holbre f(s. Putin {G). 
Family. SPHAROCOCCIDA. 
Gracelaria confervoides, Grev. 
Hilbre I., Welsh coast, Isle of Man (M). Puffin I. 
(M and G). 
Spherococcus coronopifolius, Stackh. 
Isle of Man (M). 
Family. SOLIERIIDA. 
Catenella opuntia, Grey. 
Hilbre I., Eastham, New Brighton, Puffin I., on the 
rocks very common (M). This species is also recorded 
by Leicester, although the locality is not stated. I 
searched for it at Puffin I., but was unable to find 
