IM.I \. 



589 



Monomyn, 335 

 Monostomum capitcllum, 105 



,, mutabilc, 105, 106 



rocha', 330 



-cut a, 160, 163 

 Musca, 396 

 Muscidx, 410, 413 



'. 444. 445 

 Myrianida, 343 



Myria|xxla, 33, in, 113, 387, 394, 395, 

 M 4>458 

 Mynothcla, 155 

 Myrmcleon, 396 



Mysis, 110, 469, 473, 486, 504, 509, 515 

 Mytilus, 160, 761 

 Myxinoids, 5 

 Myxispongia*, 145 

 Myzostomea, 369 



Nais, 341 



Nassa mutahilis, 101, 336, 437, 433, 167, 



178, 379, 388, 314 

 Natantia, 487 

 Natica, 337, 183 

 Nauplius, 5, 16, 460, 461, 463, 465, 466, 



4<*?. 473. 490, 49', 493. 497 

 Nautilus pompilius, 353, 176 

 Nebaliadre, 459, 465, 486 

 Nematoda, 45, 46, 50, 66, 74, 75, 371, 



373. 374. 376 

 Ncmatogens, 131 

 Nematoidea, 18, 84, 94, 371, 374 

 Ncmatus vcntricosus, 13, 417 

 Nemertea, 94, 189, 196, IQJ, 104 

 Nemertines, 30, 31, 33, 93, 136, 195, 



303, 318, 333, 434 

 Nephclis, 8a, 346, 349, 350, 351, 351, 



K*B 



Nereis, 343 



,, diTersicolor, 319 



Dumerilii, 343 

 Ncritina, 779, 737 

 Neuroptera, 396, 401, 470, 491 

 Ncurotcrus vcntricularis, 478 

 Notonecta, 395 

 Nototrochse, 330, 353 

 NudibranchiaU, 739, 341 



Ocellata, 184 



Octocoralla, 157, 179 



Octopus, 748 



Odontophora, 335, 357, 771 



Odontosyllis, 333 



Oedogonium, n 



Oligochaeta, 43, 319, 331, 335, 330, 338, 



346, 35 

 Oiynthus, 144 

 Oniscus murarius, 107, Io8, 109, no, 



516, 530, 538 

 OjH.-rcula, 31 

 Ophiothryx, 36, 549 

 Ophidia, 64 



Ophiuroidea, 136, 544, 553, 567, 563, 



576 



Ophryolrocha: puerilis, 333 

 Opisthobranchiata, 335, 333, 337 

 Ornithodclphia, 109 

 Orthoncctidx, 136 



Orthoptera, 395, 414, 430, 431, 435, 436 

 Ostracoda, 459, 500, 510 

 Ostrea, 359, 360, 363 

 OxyuridiB, 46, 373, 374 

 Oxyurus ambigua, 374 

 ,, vermicularis, 375 



Paccilopoda, 534 

 Paguritlx, 477 

 PaU-muti, no 

 Pal.L-monctcs, 476 

 PaLvmoninx, 476, 511, 513 

 Palinurus, 478, 480 



Paludina, 66, 337, 319, 335, 770, 778, 

 780 



,, costata, 779 



,, vivipara, 776 

 Pandorina, 1 1 

 Parasita, 489 

 Pedalion, 731 



Pedicellina, 98, 397, 796, 799, 307 

 Pelagia, 167, 185 

 Penaeinx, 476 

 Penneus, no, 113, 465, 469, 473, 474, 



54, 5'8 



Pennatulida:, 181 

 Pentacrinus, 5 

 Pentastomida, 539, 540 

 Pcntastomum dcnticulatum, 540, 541 

 ,, t^noides, 539, 540, 541 



Percida?, 64 

 Pcrcnnictuvtx, 335 

 Peripatus, 5, 386, 4 ll, 4 I7, 413, 547 

 Petromyzon, 61, 63, 64, 74, 83 

 Phalangclla, 304 

 Phalangid;v, 436 

 Phallusia, 83 



Pha>colosoma, 44, 355, 356, 361 

 Pholcus, 436, 447 

 Phoronis, 315, 355, 363, 364 

 Phoxinus kevis, 378 

 Phryganea, 396, 401, 409 

 Phylactolxmata, 793, 394, 397, 305, 306 

 Phyllobothrium, 718 

 Phyllodoce, 379 

 Phyllopoda, 16, 459, 461, 505 

 Phyllosoma, 479, 480 

 Phylloxera, 479 

 Physophoridx, 157, 167, 164 

 Pilidium, type of, 196, 700, 7OI, 7O3, 304, 



414 

 Pisces, 5 



>la, 30, 43 



Pisitlium, 359, 360, 363, 364 

 Planaria Ncapolitaoa, 193 

 I'lnnorbis, 373, 381, 335 



