26 



FISHES AND FISHERIES OF THE IRISH SEA. 



Polycera quadrilineata 

 Corbula gibba 

 Mactra stultorum 

 Scrobicularia alba 

 Portunus depurator 

 Corystes cassivela u nits 

 Hyas coarctatus 

 Stenorhynchus phalangiu m 

 Eupagurus bernhardns 

 Crangon vulgaris 

 Psendocuma cercaria 

 Diastylis rathkei 

 D. spinosa 

 Balanus balanoides 

 Paratylus sinammerdam m ii 

 Harpinia neglect a 

 Ampelisca Icemgata 

 Monoculodes longimanus 

 Amphilochns melanops 

 Pariambns typicus 

 Achelia echinata 

 Aphrodite aciileata 

 Nereis, sp. 

 Terebella, sp. 

 (?) Syllis, sp. 

 Serpula, sp. 

 Spirorbis, sp. 

 Cellar ia fistu losa 

 Flu sir a foliacea 

 Ever a tea cJielata 

 Scrupocella rio reph \ux 



Bugula, sp. 

 Cellepora pumicosa 

 C. avicularis 

 Porella compressa 

 Mucronella peachii 

 Membranipora membranacea 

 M. pilosa 



A Icyonidiu m gelatinosum 

 Vesicular ia spinosa 

 Gemmellaria loricata 

 Lichenopora hispida 

 Crisia ebuniea 



C. cornuta 

 Idmonea serpens 

 Aster ias rube us 

 Amphiura squama ta 

 Ophioglypka albida 

 Tealia crassicornis 

 Alcyonium digitatnm 

 Clytia Johns ton i 

 La/oca dumosa 

 Hydrallmania falcata 

 Halecium halecinum 

 Antennnlaria ramosa 

 Coppinia arcta 

 Sertularella polyzonias 

 Sertularia abietina 



S. argenteo, 

 Diphasia rosncea 



D. tamarisca 

 Tubularia indivisa 



This was a haul from very shallow water which combined mere quantity of life, 

 i.e., number of individuals, with variety of life or number of species and genera. The ten 

 species of fish were represented by 879 individuals, and we estimated that there were some 

 hundreds of crabs and of starfishes, and some thousands of shrimps. The numbers of 

 the Molluscs, of the hermit-crabs, of Balanus and of Spirorbis were also very larg-e. 



From these statements it is clear that whether it be a question of mere mass of 

 life or of variety of life, haul for haul, the shallow waters can hold their own against 

 the deep sea, and form in all probability the most prolific zone of life on this globe. 

 And of this zone, as seen in the Irish Sea, two very distinct types of abundance are seen, 

 the Manx waters abounding in species, and the Lancashire in individuals. 



Now all these animals, large or small, bottom-haunting or free-swimming, if not them- 

 selves fish, and edible, are related, directly or indirectly, as food or enemies, or competitors in 

 the struggle for existence, with the subjects of our commercial fisheries. The various fishes 

 move or migrate about the Irish Sea according to the seasons, the temperature, and the 



