182 



TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



April. 









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02 



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O* 



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Chaetoceros 



Biddulphia 



Rhizosolenia 



Coscinodiscus 



Ceratium fusus 



Pleurobrachia pileus 



Medusoid gonophores 



Alcyonium eggs 



Sagitta bipunctata 



Autolytus prolifer 



Larval Polychseta 



" Mitraria " 



Pasiphaea sivado 



Meganyctiphanes norvegica. 



Mysis stage of Crangon 



Calanus helgolandicus 



Pseudocalanus elongatus 



Paracalanus parvus , 



Temora longicornis 



Acartia clausi , 



Acartia discaudata , 



Centropages hamatus 



Centropages typicus 



Anoraalocera patersoni 



Oithona similis 



Alteutha interrupta 



Copepod nauplii 



Barnacle nauplii 



Barnacle ostracod stage .... 



Crab zoea 



Podon intermedium 



Podon leuckartii 



Oikopleura 



Ascidian eggs 



Fish eggs , 



Fish larvae 



Eurydice 



Idotea linearis 



Idotea marina 



20 



10 



19 



20 



17 



L3 



