LIST OF ILLUSTRATIONS 



THE WEYMOUTH ANEMONE, ACTINOLOBA DIANTHUS, AND 

 THE CONTORTED TUBE-WORM SERPULA CONTOR- 

 TUPLICATA ..... Frontispiece 



FIG. PAGE 



1. A PORTION OF THE BRANCHING TUBULAR GROWTH 



FORMED BY R.HABDOPLEURA NORMANI . 5 



2. ONE OF THE POLYPS OF RHABDOPLEURA . . . 7 



3. A PIECE OF THE WHITE BRANCHING CORAL (LOPHO- 



HELIA PROLIFERA) . ... 9 



4. BRITISH MARINE WORMS OR CH^ETOPODS . .78 



5. THE SHELL OF THE HEART-URCHIN (SPATANGUS PUR- 



PUREUS) WITH ITS SPINES RUBBED OFF . . 80 



6. BRITISH SEA- ANEMONES . . . . .85 



7. A COMMON BRITISH JELLY-FISH . . 94 



8. A COMMON BRITISH JELLY-FISH . . .96 



9. THE LARVAL OR YOUNG FORM OF CRUSTACEA KNOWN 



AS "THE NAUPLIUS" .... 105 



10. THE COMMON SHIP'S BARNACLE, LEPAS ANATIFERA . 109 



11. A LARGE BRITISH SEA-ACORN, BALANUS PORCATUS . no 



12. Two STAGES IN THE GROWTH OF THE COMMON 



BARNACLE FROM THE NAUPLIUS STAGE . .112 



13. THE PICTURE OF THE " GOOSE TREE," COPIED FROM 



THE FIRST EDITION OF GERARD'S "HERBAL" . 123 



xiii 



