FIGURES IN THE TEXT 



1. Common Dinoflagellates of the Plankton 



2. Floating larva of an annulate Sea-water Worm 



3. Floating larva of a snail-like mollusc of the genus 



Rissoa ....... 



4. Floating larva of the common edible Sea-urchin 



5. Floating larva of Crustacea 



6. Venus's Girdle . 



7. Venus's Shoe 



8. Phosphorescent Jellyfish 



9. Sail-bearing Jellyfish . 



10. Transverse section of a Tunny's trunk 



11. Stages in the movements of the pectoral fins of a 



Skate swimming 



12. The Loggerhead Turtle 



13. Beroe .... 



14. Mailed Gurnard . 



15. Fossil Armoured fish . 



16. Fossil Gill-breathing Sea Scorpion 



1 7. Fossil Trilobite . 



18. The King-crab . 



19. Jaw-bones of a large Shark . 



20. The Basking Shark 



21. Head of a John Dory (mouth closed) 



22. Head of a John Dory (mouth open) 



23. Sand Smelt. .... 



24. Weever ..... 



25. The Gofu 



vi 1 



