xii LIST OF PLATES 



PLATE To face page 



XIX Phyto-Plakkton ; Zoo-Plankton . . . 236 



XX ZoBA Stage of Crab ; Sagitta bipunctata . 238 



XXI Plankton-Net Silk, new and old ; Mixed 



Plankton; Zoo-Plankton .... 254 



XXII BiDDULPHiA ; Naxtplius and Cypris Stages or 



Balanus 256 



XXIII Temora longicosnis 270 



XXrV Large hauls of Calanus finmarchicvs . . 272 



XXV Oyster Culture at Arcachon . . . . 282 



XXVI Mussel Skear in Morecambe Bay ; Oyster 



Culture in the Bay op Spezia . . 286 



XXVII Transplanted Mussels IN Morecambe Bay . 290 



XXVIII Plaice Larva ; Plaice Hatching Boxes at Port 



Erin Biological Station .... 300 



