LIST OF ILLUSTRATIONS. 



HOMES UNDER THE SEA .... Frontispiece 



GLASS-ROPE SPONGE 6 



EUPLECTELLA ASPERGII.LUM, OR VENUS's SEA-BASKET . . 9 



SPICULES OF GLASS-SPONGES, UNDER THE MICROSCOPE . 15 



EUPLECTELLA CuCUMER 17 



ROSSEILA VELATA 23 



THE OCTOPUS . ... 32 



EXTREMITY OF ARM . 35 



THE COMMON SEPIA 38 



CUTTLE BONE ... . . 39 



EGGS OF SEPIA .... ... 41 



FlVE-FlNGERED STARFISH 46 



UNDER-SURFACE OF STARFISH . . ... 48 

 STARFISH REPRODUCING MISSING PORTIONS . . . .51 



ENCRINITES, OR LILY-STONES 55 



COMATULA, OR FEATHER STAR . . ... 57 



GORGONOCEPHALUS, OR GORGON'S HEAD .... 59 



BRITTLE STARS, OR SNAKE- TAIL ..,.,. 61 



