INDEX TO PLATES. 



A {Front.) 



1. Chylocladia articulata. 



2. Ectocarpus siliculosus. 



S. Padina pavonia. — (Peacock's- 

 tail.) 



4. Porphyra laciniata. — (Purple 



Laver, or Sloke.) 



5. Dictyota dichotoma. 



B 



1. Trochus ziziphinus. — (Pearly 



Top.) 



2. Littorina littoralis. — (Peri- 



winkle.) 



3. Patella vulgaris. — (Limpet.) 



Ditto, showing under-side. 



4. Purpura lapill us. 



5. Scalaria communis. — (Com- 



mon Wentletrap.) 



6. Cardium edule. — (Common 



Cockle.) 



7. Solen ensis. — (Razor-shell.) 



8. Mytilus edulis.— (Mussel.) 



9. Pholas dactylus. 



C 



1. Corallina officinalis. — (Com- 



mon Coralline.) A portion 

 of frond, with terminal 

 ceramidium. 



2. Cladophora arcta. 



3. Enteromorpha compressa. — 



(Sea Grass.) 



4. Iridaea edulis. — (Dulse, or 



dillosk.) 



5. Nitophyllum punctatum. 



D 



1. Laminaria digitata. — 



(Tangle.) 



2. Fucus serratus. — (Notched 



wrack.) 



3. Bryopsis plumosa. 



4. Delesseria hypoglossum. 



E 



L Sertularia filicula. 



2. Flustra foliacea. 



3. Coryne pusilla. 



4. Actinia mesemhryanthe- 



mum. 



5. Ditto. 



6. Lepralia ciliata. 



7. Cellularia avicularis, 



8. Alcyonium digitatum. 



9. Bimodes crassicornis. 



F 



1. Serpula contortuplicata. 



2. Tube of Terebella. 



3. Teredo navalis. — (Ship- 



worm.) 



4. Aphrodite, or Halithea acu- 



leata. — (Sea-mouse.) 



5. Sabella. 



6. Holothuria. — (Sea - cucum- 



ber.) 



G 



Dunlin — See p. 9. 



