ILLUSTRATIONS 



floor of long island sound .... Frontispiece 



FACING PAGE 



THE ANGLER-FISH l6 



THE FLOUNDER 17 



HYDROIDS 3 2 



CLOSE-UP OF A SEA-SPIDER 33 



COLLECTING AT LOW TIDE 33 



SWIMMING-CRABS 4-0 



SEA-SPIDERS 48 



BIVALVE MOLLUSKS 49 



ISOPODS 64 



AMPHIPODS 64 



EGGS OF A PLANARIAN FLATWORM 65 



HYDROIDS 65 



ECHINODERMS 80 



SERPENT-STARS 8l 



ECHINODERMS 9^ 



MADREPORITE OF THE COMMON STARFISH • • • 97 



MADREPORITE OF THE SERPENT-STAR 97 



GHOSTS AND HOBGOBLINS OF THE SEA .... IO4 



THE SKELETON SHRIMP 112 



RADIOLARIA 113 



[xi] 



