344 
GENERAL INDEX 
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plankton — Continued. 
general discussion — Continued. 
Copepoda 141 
Crustacea 139 
Cumacea 152 
Diatoms and other plants 104 
Echinodermata 138 
Fish 164 
Macrura 155 
Mollusca _ 136 
Ostracoda 140 
Phyllopoda 139 
Protozoa 121 
Pycnogonida. 161 
Schizopoda_ 152 
Stomatopoda 152 
Vermes 130 
Xiphosura 161 
influence, salinity ___ 175 
temperature.. 175 
neritic 101 
oceanic 101 
planorbis, Skenia. 137 
plateada 240,244 
plateado 246 
platessoides, Hippoglossoides _.. 165,170,172 
Platyhelminthes 135 
Platynereis megalops. . - 131, 133 
Platypoecilus mentalis 255 
tropicus 255 
Pleurobrachia 124, 125 
pileus 128-130 
occurrence. Woods Hole, 1893-1907.- 128 
Podarke obscura 131-133 
Podocoryne carnea_. 123, 125, 129 
fulgurans. 123-125,129,130 
Podon finmarchichus 139 
intermedius 138-140 
leuckarti 139 
polyphemoides 140 
Po3cilia boucardi 255 
salvatoris 240,255 
sphenops 255 
tenuis _ 255 
PceciliidsB 243,254 
Mollienesia 255 
Priapichthys 258 
poikilothermal vertebrates, digestive enzymes 181-200 
animals used in investigation 182 
carbohydrate-splitting enzymes 192 
conclusions 198 
digestion, ereptic 190 
peptic 184 
tryptic 188 
digestive tract, reaction 184 
discussion, general 197 
inverting enzymes 195 
methods, description 183 
results - 184 
polita, Diastylis 152 
PoUachius virens.- 172 
occurrence, 1893 to 1907, Woods Hole.. 169 
Polydactylus approximans 284 
Polynemidas... 284 
Polynemus approximans 284 
Polynemus approximans 284 
Polyonyx macrocheles 159,160 
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polyphemoides, Podon 140 
polyphemus, Limulus 161 
PomadasidEe _ 286 
Anisotremus dovii- 287 
pacific! 287 
Orthopristis chalceus 286 
Pomadasis panamensis 286 
Pomolobus pseudoharengus 168,172 
Pomoxis sparoides. 182 
Pontella meadii... 102,143-146 
pennata 143,146 
Pontellidas _. 146 
Pontogenia inermis _ 150,151 
Poronotus triacantlius. 165, 106, 168, 170, 172 
Priapichthys 258 
fosteri.__ 241,242,267,260 
letonai 241,242,256-258 
panamensis _._ 261 
Prionotus carolinus 105, 166, 170, 172, 173 
occurrence. Woods Hole, 1893 to 1907 173 
Pristipoma chalceum 286 
chalceus 286 
dovii 287 
kneri 286 
producta, Syncoryne 123,129 
Profundulus 253 
punctatus 241,253 
prolifer, Hybocodon 123-125,129,130 
Proteus anguineus 184 
Protozoa _. 121-123 
occurrence. Woods Hole, 1922 and 1923 121, 122 
Pseudocalanus elongatus 103, 143-140, 170 
occurrence. Woods Hole, 1922 and 1923.. 144 
Pseudodiaptomus coronatus 103, 141, 142, 145, 146 
occurrence. Woods Hole, 1922 and 1923 142 
pseudoharengus, Pomolobus 168,172 
Pseudopleuronectes americanus 133, 166, 168, 172 
Pseudosquilla ciliata 155 
Pteronotus 251 
pteropods- 137 
Ptilocheirus pinquis 150,151 
puffer _ 170 
pugilator, Uca 159,160 
pugnax, Uca 159,160 
punctatus, Fundulus 253 
Labrus 272 
Profundulus _ 241,253 
Pycnogonida 161,162 
quadracus, Apeltes _._ ._ 167,172 
quadrispinosa, Diastylis 152 
quahog _ 214 
quelen, Pimelodus... _ 251 
Querimanna 266 
quinquecirra, Dactylometra _ 127,129,130 
Rana.. 184 
rapax, Ichthyobdella... 131,133 
rastralis, Anchovia _ 284 
Stolephorus 284 
razor clam. Pacific 201-230 
adult, growth _ 216 
age, determination.. 216 
anatomy 204 
digestive system 207 
ner vous system 207 
