490 



INDEX. 



Mytilus, 215, 216 

 Myxinoicls, 4 

 Myxospougiae, 119 

 Myzosto'mea, 305, 450 



Nais, 283 



Nassa mutabilis, 83, 187, 188, 192, 196, 

 216, 230, 231, 238, 269 



Natantia, 404 



Natica, 196, 235 



Nauplius, 4, 185, 380, 381, 383, 384, 385, 

 386, 389, 390, 391, 392, 396, 397, 398, 

 404, 405, 406, 407, 409, 410, 411, 412, 

 413, 414, 415, 416, 417, 418, 419, 420, 

 425, 427, 428, 430, 432, 433, 436, 448 



Nautilus pompilius, 210, 229 



Nebaliadae, 385, 403, 420 



Nematelniintb.es, 307 



Nematoidea, 12, 15, 36, 37, 40, 53, 60, 61, 

 68, 77, 307, 309, 311, 312 



Nernatus ventricosus, 9, 353 



Nemertea, 77, 156, 162, 167, 168 



Nemertines, 24, 25, 26, 76, 112, 161, 272, 

 276, 352 



Nephelis, 67, 286, 289, 290, 291, 292, 293 



Nepthys scolopendroides, 273 



Nereis, 284 



Nereis diversicolor, 264 



Neritina, 189, 196 



Neuroptera, 331, 348, 349 



Neuroterus ventricularis, 355 



Nototrocbaa, 273, 275 



Nudibranchiata, 77, 189, 199 



Ocellata, 151, 152 



Octocoralla, 125, 148 



Octopus, 201, 205 



Odontophora, 186, 212, 213, 224 



Odontosyllis, 275 



Oligochffita, 264, 265, 269, 273, 280, 286, 



289, 291 

 Olynthus, 118 

 Oiiiscus murarius, 88, 89, 99, 429, 430, 



431, 432, 434, 435, 438, 439 

 Opbidia, 51 

 Opbiothrix, 29, 457 

 Ophisthobranchiata, 192, 196 

 Opbiuroidea, 112, 457, 460, 468, 469, 470, 



471, 472, 478, 479, 480 

 Opbryotrocba, 275 

 Ornithodelphia, 90 

 Orthonectidae, 112 

 Orthoptera, 343, 348, 349, 352, 353 

 Ostracoda, 415, 424 

 Ostrea, 215, 217 

 Oxyuridaa, 37, 308, 310 

 Oxyurus ambigua, 310 

 Oxyurus verniicularis, 310 



Paecilopoda, 444 



Paguridro, 395, 432 



Palfcmon, 90, 394, 425, 426, 427, 429, 432, 



434, 436, 438 

 Palajmonetes, 394 



Palasmoninae, 393 



Pallene, 448 



Palinurus, 396, 398 



Paludina, 53, 187, 188, 189, 195, 224, 230, 



232, 235 



Paludiua costata, 189 

 Paludina vivipara, 187 

 Parasita, 406 

 Pauropus, 324 



Pedicellina, 80, 242, 245, 248, 250, 254 

 Pelagia, 137 

 Penseiuaj, 393 

 Penams, 90, 92, 96, 385, 386, 389, 391, 



392, 894, 418, 419, 422, 430 

 Pennatulidaa, 149 

 Pentacrmoid, 476, 478 

 Pentacrinus, 4 

 Pentastomida, 449, 450 

 Pentastomum denticulatum, 450 

 Pentastomum tasnioides, 450 

 Percidaa, 51 

 Perennicbffitse, 277 

 Peripatus, 4, 319, 320, 339, 340, 342, 353, 



451 



Petromyzon, 49, 51, 60, 67, 69 

 Phalangella, 252 

 PhalangidaB, 361 

 Pballusia, 67 



Pbascolosoma, 35, 295, 299 

 Pholcus, 361, 366 

 Phoronis, 77, 259, 263, 299, 301 

 Pboxicbilidium, 448 

 Phoxinus, 173, 313 

 Pnronima, 77 

 Phryganea, 331, 334, 339 

 PhylactoL-emata, 244, 253, 254 

 Phyllobotbrium, 180 

 PbyUodoce, 273 

 Phyllopoda, 12, 380, 381, 382, 384, 385, 



388, 389, 402, 409, 410, 416, 418, 419, 



420, 422, 436 

 Phyllosoma, 396, 398 

 Phylloxera, 355 



Physophoridae, 125, 133, 134, 135 

 Pilidium, 162, 165, 167, 168, 169, 352 

 Pisidium, 214, 215, 217, 219, 238 

 Piscicola, 16, 34 

 Planaria, 159, 161 

 Planorbis, 226, 233, 269 

 Platyelmintbes, 15, 16, 19, 24, 27, 183, 



352 



Platygaster, 345, 346, 348 

 Pleurobrachia, 145, 146, 147, 196 

 Pluteus, 468, 469, 471, 472 

 Pneumoderrnon, 200, 480 

 Podura, 77, 331 

 Poduridse, 336 

 Polychaeta, 34, 254, 264, 265, 269, 280, 



282 



Polydesmus cornplauatus, 320 

 Polygordius, 269, 270, 271, 272, 273, 275, 



281, 295, 319 

 Polynoe, 20, 34, 274 

 Polyopbtbalmus, ~27'2 



