Acorn-shell, 106. 
Actinia, 69. 
Aleyonidium, 112. 
Amorecium, 58. 
Amphitrite, 108. 
Angler, 128. 
Anomia, 47. 
Arbacia, 77. 
Argonaut, 15. 
Ark-shell, 50. 
Asterias, 73. 
Astrangia, 72. 
Auger-shell, 29. 
Aurelia, 66. 
Balanus, 106. 
Barnacles, 102. 
Batrachus, 122. 
Beach-flea, 95. 
Belone, 125. 
Birgo, 85. 
Boltenia, 56. 
Bopyrus, 96. 
Botryllus, 57. 
Brittle-stars, 75. 
Buccinum, 20. 
Bugula, 112. 
Calamary, 9. 
Callinectes, 85. 
Campanularia, 62. 
Cancer, 85. 
INDEX. 
Caprella, 96. 
Carcharias, 121. 
Caudina, 80. 
Cerianthus, 71. 
Chalina, 115. 
Chilomycterus, 126. 
Cirratulus, 108. 
Clam, 82. 
Cliona, 115, 
Corals, 71. 
Coronula, 107. 
Crabs, 81. 
Crangon, 94. 
Crepidula, 30. 
Crisia, 113 
Crucible-shell, 32. 
Ctenophora, 67. 
Cuttle-fishes, 8. 
Cyanea, 65. 
Cynthia, 56. 
Dactylometra, 64. 
Diodon, 126. 
Diplothyra, 40. 
Dog-whelk, 21. 
Dollar-fish, 124. 
Donax, 44. 
Drill, 30. 
Echinarachnius, 75. 
Egg-fish, 125. 
KEscharina, 111. 
