178 
Corals, 40 
Coronula diadema, 82 
Crab, blue, 99 
edible, 99 
fiddler, 106 
ghost, 105 
green, 100 
gulf-weed, 101 
horseshoe, 52, 110 
Jonah, 104 
lady, 101 
mud, 102 
orchid, 108 
oyster, 104 
robber, 93 
rock, 78, 102 
spider, 108 
toad, 110 
Crabs, 98 
Crangon vulgaris, 89, 91 
Cray-fishes, 87 
Crepidula, 149 
convexa, 15] 
fornicata, 150 
plana, 151 
Cribrella sanguinolenta, 54 
Crustaceans, 77 
relation to insects, 77 
Ctenodiscus crispatus, 55 
Cuvieria squamata, 61 
Cyanea arctica, 33 
Dactylometra quinquecirra, 34 
Danais archippus, 19 
Darwin, Charles, 24 
Davenport, C. B. and G. C., 23 
Davenport, Mrs. Gertrude C., 47 
Decker shell, 149 
Devil-fish, American, 163 
Diadema setosum, 59 
Discosoma nidita, 76 
Echinarachnius parma, 60 
Edwardsia leidyi, 39, 47 
Eel-grass hydroid, 37 
Ensis americana, 125 
Epizoanthus americanus, 93 
Escharella variabilis, 76 
Euglycera americana, 68 
Eupagurus bernhardus, 94 
longicarpus, 94 
pollicaris, 94 
Evolution, law of, 21 
Flat-worms, 62 
Flukes, 62 
INDEX 
Fulgur canaliculata, 141 
carica, 141 
perversa, 143 
| Gasteropoda, 137 
| Gastrula, 23 
| Gecarcinus laterallis, 108 

Gonionemus murbachii, 35 
Goode, G. B., 24 
Gould, A. A. and Binney, W. G., 116, 152 
Grantia, ciliata, 29 
| Gribble, 97 
| Haeckel, Ernst, 31 _ 
| Halcampa producta, 46 
| Hammatt, Mrs. M. L., 45 
| Hargitt, C. W., 31 
Herdman, W., 169 
Hermit crab, 92 
Herrick. Francis H., 85 
| Hertwig, Richard, 23 
| Hippa talpoida, 94 
Holothuria, 49 
Homarus americanus, 83 
Huxley, Thomas H., 88 
| Hyas coarctatus, 110 
Hyat, Alpheus, 25 
Hydroid, eel-grass, 37 
passion-flower, 37 
Hydroids, 30 
Instincts of animals, 19 
Janthina fragilis, 149 
Jellyfishes, 30 
development of, 31 
rain-bow, 39, 47 
star-spangled, 170 
speckled, 34 
thimble, 35 
| Jingle shell, 134 
| Kingsley, J. S., 23, 80, 157, 169 
Korschelt and Heider, 23, 139 
Kraken, the, 163 
| Lace coralline, 75 
Lambe, Lawrence M., 25 
Lamellibranchiata, 116 
Lang, Arnold, 24, 120 
Lepas anatifera, 83 
fascicularis, 83 
| Libinia dubia, 109 
emarginata, 109 
Limnorea lignorum, 97 
Limulus polyphemus, 110 
Lithophagus, 131 
