xii LIST OF PLATES 



PLATE To face page 



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



XX ZoEA Stage of Cbab ; Sagitta bipunctata . 238 



XXI Plankton-Net Silk, new and old ; Mixed 



Plankton; Zoo-Plankton .... 254 



XXII BiDDULPEiA ; Nauplius and Cypris Stages of 



Balanus 256 



XXIII Temoea longicornis 270 



XXIV Large hauls of Calanus finmarceicus . . 272 



XXV Oyster Culture at Arcachon . . . .282 



XXVI Mussel Skear in Morecambe Bay ; Oyster 



Culture in the Bay of Spezia . . 286 



XXVII Transplanted Mussels in Morecambe Bay . 290 



XXVIII Plaice Larva ; Plaice Hatching Boxes at Port 



Erin Biological Station .... 300 



