INDEX TO THE GENERA. 



367 



Ophiomusium, 289 

 Ophiomyxa, 290 

 Ophion, 101 

 Ophionereis, 290 

 Ophiopeza, 289 

 Ophiophorus, ^89 

 Ophiophyllum, 289 

 Ophiopterus, 290 

 Ophiozona, 289 

 Ophisurus, 51 

 Ophryops. 192 

 Opifex, 136 

 Opisthotricha, 327 

 Opomyza, 129 

 Optonurus, 49 

 Orbulina, 338 

 Orchestia 257 

 Orca, 27 



Orectognathus, 97 

 Oreda, 211 

 Oregus, 143 

 Oreocharis, 209 

 Ornithomyia, 138 

 Ornithochiton, 86 

 Orocrambus, 113 

 Orophora, 115 

 Oropterus, 210 

 Orsinome, 241 

 Orthenches, 122 

 Orthocladius, 137 

 Orthodera, 353 

 Orthosia, 104 

 Orygmatobothrium, 311 

 Oscinis, 129 

 Ossifraga, 35 

 Ostenia, 130 

 Ostrea, 93 

 Othius, 183 

 Otiorhynchus, 352 

 Otoclasium, 355 

 Otoconcha, 65 

 Oulactis, 314 

 Owenia, 279 

 Oxycephalus, 257 

 Oxyethra, 229 

 Oxylasma, 156 

 Oxynotus, 54 

 Oxyopes, 244 

 Oxytelus, 351 

 Ozius, 248 



PACHYCHALINA, 324 

 Pachycorinus, 183 

 Pachycotes, 219 

 Pachykellia, 92 

 Pachylopus, 173 

 Pachymorpha, 233 

 Pacbyprypnus, 205 

 Pachyrhamma, 232 

 Pachyrhina, 135 

 Pachytylus, 233 

 Pachyura, 210 



Pactola, 209 

 Paedaretus, 204 

 Paelocharis, 201 

 Pagrosomus, 41 

 Pagurites, 252 

 Pagurodes, 2^2 

 Palsemon, 255 

 Palaeomicra, 125 

 Palaina, 78 

 Pallasia, 282 

 Pallene, 247 

 Palludicella, 344 

 Pandalus, 255 

 Pandrus, 273 

 Pangaeus, 221 

 Pangonia, 132 

 Paniscus, 132 

 Pannichia, 286 

 Panopea, 88 

 Panopeus, 248 

 Panspoeus, 156 

 Pantopsalis, 343 

 Pantosperma, 122 

 Paprides, 233 

 Parabrontes, 167 

 Paracalamus, 269 

 Paracalliope, 259 

 Paracorophium, 261 

 Paracrangonyx, 260 

 Paractis, 314 

 Paracymus, 351 

 Paracypris, 268 

 Paradetis, 107 

 Paradexamine, 259 

 Paradoxa, 134 

 Paraleptamphopus, 259 

 Paramecium, 331 

 Paramecosoma, 166 

 Paramithrax, 247 

 Paranephrops, 253 

 Paranomocerus, 215 

 Paranthura, 262 

 Parapagurus. 252 

 Paraperris, 43 

 Paraphylax, 185 

 Paraponyx, 114 

 Parapronoe, 257 

 Paratanais, 262 

 Pardosa, 244 

 Paresuris, 222 

 Parharpinia, 258 

 Paridotea, 264 

 Parinus, 154 

 Parmipalpes, 178 

 Parmius, 159 

 I'arvicellula, 13.4 

 Paryphanta, 65 

 Passer, 347 

 Patella, 84 

 Patellina, 338 

 Paurocope 272 

 Paupris, 159 

 Paxillus, 78 

 Peachia, 315 



Pecten, 93 

 Pectilabrus, 

 Pectinaria, 280 

 Pectinura, 289 

 Pedalopia, 150 

 Pedicellinopsis, 293 

 Pediculus, 353 

 Pedilophorus, 163 

 Pelagodroma, 34 

 Pelagohydra, 319 

 Pelecanoides, 35 

 Pelodrilas, 284 

 Pelogenia, 277 

 Peloniu n, 159 

 Pelosina, 334 

 Peltidium, 271 

 Peltorhamphus, 48 

 Peltophora, 119 

 Penella, 274 

 Penillia, 267 

 Peniticus 197 

 Pentacheles, 253, 

 Pentacrinua, 291 

 Pentarthrum, 215 

 Perca, 348 

 Percnodaimon, 103 

 Peremptor, 126 

 Periatrium, 185 

 Pericoma, 138 

 Pericoptis, 141 

 Pericrypta, 317 

 Peridimium, 331 

 Peripatoides, 236 

 Periphylla, 317 

 Periplaneta, 354 

 Perisponia, 320 

 Perrierina, 90 

 Petrocheles, 252 

 Petrochelida, 37 

 Petroica, 28 

 Petrolisthes, 252 

 Phacus, 332 

 Phacussa. 64 

 Phii-ophanus, 203 

 Phceosaces, 118 

 Phaethon, 33 

 Phaganophana, 176 

 Phaiussa, 64 

 Phalacrocorax, 34 

 Phania, 127 

 Phanophilus, 183 

 Pharmacus, 233 

 Pharcolodon, 328 

 Pharcolosoma, 285 

 Phasianella, 81 

 Phasianus, 348 

 Phaulacridium, 233 

 Phelerosus, 152 

 I'hcmus, 206 

 Phenacharopa, 61 

 I'henachohelis, 63 

 Pherusa, 259 

 Phialonema, 332 

 Philacta, 206 



