57 
lUlODOPllYClwE (Red Seaweeds). 
Porphijra laciniata, Agardh (sloke, laver).— Abundant at all levels : 
very variable in form. 
Chondrus crispus, Lyngb (Carrageen, Irish moss). — Abundant and 
variable in colour at different levels. 
Gvjartina mamUlosa, J. Ag. — Common on rocks near low water. 
, Fihjdymenia pabnata (L.), Grev (Dulse). — Very common on rocks 
and on stems of laminaria, <fcc. 
Chylocladia arliculata, Grev. — Common on rocks. 
Chyloclodia clavellosa, Grev. — On washed up stems. 
Plocamium coccineum, Lyngb. (Braided Hair). — Very common on 
other algte and on rocks. 
NitophyUmn lacerattm, Grev. — Not common. 
Delesseria sanyuinea Lamour. — Common below low tide-mark. 
Delesserin alata, Lamour. — Principally on other alg.e. 
RItodornela subfusca, Agardh. — Common, but variable in appearance. 
Odonthalia denlata, Lyngb. — Somewliat rare, a peculiarly northern 
species. No specimens brought this summer from Durham 
coast, although it is found in Cullercoats bay. 
Polyuphonia tuceolata, Grev.— Not uncommon between tide-marks. 
Pol ysiphonia fostiyiatu, Grev. — Very common on stems of Fucus 
nodosus. 
Onlf'ithmi setacea, Agardh. — Occasionally washed up. 
Callithmnnion arbuscula, Lyngb. — Not uncommon on rocks and 
shells. 
Ptilota plumosa (L.), Agardh. — Common on laminarian stems. 
Ptilota eleyans, Kiitz.— On rocks, but not on laminaria. 
Ceramium rnbrum, Agardh. — Very common at all levels and variable. 
Ceramitirn acanthonotum , Cam. — Not uncommon at low water. 
Dumontia jUiformis, Grev. — Between tide-marks. 
Iridea edulis Bory, (Dulse). — In the deeper water and washed up: 
not often in pools between tide-marks. 
Pohjides rotundus, Grev. — Rock pools. 
Corallina officbialis, L. — Very common at all levels. 
Melobesia polymorpha, Lamour.— Common on rocks, &c., between 
tide-marks. 
