Littorina littorea, 148 
palliata, 149 
Lobster, American, 83 
spiny, 85 
Loeb, Jaques, 20 
Loligo pealit, 161 
Lumbriconereis opalina, 67 
tenuis, 67 
Lunatia heros, 139 
Macrocheira kiimpferi, 108 
Mactra solidissima, 123 
Marine Life, distribution of, 17 
Marine Zoology, Textbooks of, 23 
Mayer, A. G., 31 
Mead, A. D., 53 
Meckelia ingens, 64 
rosea, 65 
Megalops, 99 
Melampus bidentatus, 148 
Meleagrina margaritifera, 135 
Melicertum campanula, 35 
Membranipora pilosa, 75 
Metridium marginatum, 17, 44 
Microciona prolifera, 28 
Milky cross, 35 
disk, 34 
Mnemiopsis leidyi, 39, 47 
Modiola modiolus, 130 
plicatula, 130 
Molgula manhattensis, 170 
Mollusks, 113 
naked, 151 
Morgan, C. Lloyd, 20 
Moss-animals, 74 
Mussel, bearded, 130 
edible, 129 
fresh-water, 132 
horse, 130 
marine, 129 
ribbed, 130 
rock-boring, 131 
Mussels, 116 
Mva arenaria, 123 
Mysis stenolepis, 92 
Mytilus edulis, 129 
Nagel and Parker, 19 
Nassa obsoleta, 146 
trivittata, 147 
Nautilus, chambered, 154, 157 
paper, 154, 164 
pearly, 157 
pompilius, 157 
INDEX 

Nereis limbata, 66 
pelagica, 66 
virens, 66 
Neverita duplicata, 139 
Nudibranchiata, 151 
Obelia commissuralis, 38 
Octopus, 152 
Octopus americanus, 163 
Octopus bairdu, 164 
Ocypoda arenaria, 105 
Ommastrephes illecebrosus, 161 
Operculum, 138 
Ophiopholis aculeata, 56 
bellis, 57 
Ophiura brevispina, 56 
Orbicella acropora, 40 
Orchestia agilis, 97 
Osphradium, 138 
Ostrea edulis, 121 
virginica, 121 
Oyster, American, 121 
European, 121 
pearl, 135 
Oyster-drill, 146 
Oysters, 116 
Paguridae. 92 
Palaemonetes vulgaris, 90 
Panopeus depressus, 102 
herbstu, 102 
Panulirus argus, 85 
interruptus, 86 
Parchment shell, 73 
Passion- flower hydroid, 37 
Pearls, 136 
Pecten irradians, 133 
islandicus, 134 
Penzeus brazilensis, 91 
setiferus, 91 
Pennaria tiarella, 37 
Pentaceros reticulatus, 55 
| Periwinkle, 148 
Phoxichilidium maxillare, 111 
Physalia arethusa, 31 
Pinna muricata, 131 
Pinnotheres maculatum, 105 
ostreum, 104 
Planes minutus, 102 
Platodes, 62 
Platyonichus ocellatus, 101 
Prawn, common, 90 
snapping, 86 
Prawns, 88 
Polycirrus eximius, 69 
Polyzoa, 74 
179 
