180 
Porifera, 25 
Porpita linneeana, 32 
Portuguese Man-of-War, 31 
Portunus sayi, 101 
Purpura lapillus, 144 
Pyenogonidee, 111 
Radula, 137 
Rathbun, Mary J., 102 
Red crust, 76 
Rhodactinia davisii, 47 
Sagartia leucolena, 10, 45 
lucie, 47 
Salpa, 167 
Sand-bug, 94 
Sand-dollar, 60 
Sand-fleas, 96 
Saville-Kent, W., 121 
Seallop, Arctic, 134 
common, 133 
Sea-anemones, 40 
brown, 44 
cake, 48 
crimson, 47 
orange streaked, 47 
parasitic, 47 
passion-flower, 46 
sand, 46 
white-armed, 45 
Sea-arrows, 159 
Sea-blubber, 33 
Sea cucumber brittle, 60 
+»  erimson, 61 
red, 61 
Sea cucumbers, 49 
Sea fans, 44 
Sea-flower, 70 
Sea-mouse, 65 
Sea-plume, 38 
Sea-slugs, 151 
Sea-spiders, 111 
Sea-squirts, 165 
Sea urchin, green, 52, 59 
purple, 58 
stinging, 59 
Sea urchins, 49 
Serpula dianthus, 69 
Shell, boat, 149 
jingle, 134 
parchment, 7 
razor, 132 
Ship-worm, 128 
Shrimp, common, 89 
coral, 91 
INDEX 



edible, 91 
feather-footed, 92 
mantis, 95 
Shrimps, 88 
Siliqua costata, 126 
Siphon, 115 
Slipper limpets, 149 
Slugs, 137 
Smith, H. M., 28 
Snail, floating, 149 
mud-flat, 146 
rock, 144 
salt-marsh, 148 
sand-collar, 139 
sand-flat, 147 
sea-weed, 149 
ten-ribbed, 145 
Snails, 137 
Solenomya velum, 127 
Spider crabs, 108 
Spirobranchus tricornis, 70 
Spirula, 154 
Spongia, agricina, 27 
equina gossypina, 27 
equina meandriformis, 27 
graminea, 27 
officinalis tubulifera, 27 
Sponge, boring, 23 
finger, 29 
glove, 26 
grass, 27 
red, 27 
sheepswool, 27 
sulphur, 29 
urn, 29 
velvet, 27 
yellow, 27 
Sponges, 25 
commercial, 26 
Squid, blunt-tailed, 161 
short-tailed, 161 
giant, 161] 
Squids, 152 
Squilla empusa, 95 
Starfish, blood, 54 
brittle, 56 
common, 50 
giant, 55 
mud, 55 
serpent, 56 
Starfishes, 49 
Staurophora laciniata, 35 
Stebbing, Thomas R. R.. 80 
Stenopus hispidus, 91 
Stoichactis helianthus, 48 
Strongylocentrotus drobachiensis, 59 
Suberites compacta, 29 
