SUBJECT INDEX. 



473 



Xoctitiiai, 27 



Nuclein, 22 



Nucleolus, 403, 407 



Nucleus, 22, 24, 180, 310, 401, 407 



Nutrition, types of, 21 



2s!/ctiribia, 359 



Obisiuiit, 442 



Ocelli, 329, 359, 361 



Ocitus brunneuii, 221 



Oculina corontiUs, 253 



Odopoda, 72, 367 



Octopus, 72, 105, 142, 144, 168, 179, 



202, 234, 239, 286 

 OdoidopUora, 70 

 Odontophore, 69, 72 

 (Esophageal glands, 38 

 CEsophagus, 34-36, 38-44, 47, 49-52, 



55-60, 65, 70, 87, 92 

 Olfactory organs, 349, 351, 352, 356, 



361, 363. 366, 367 

 OUtjochcctu, 37, 38, 87, 90, 223, 256, 



257, 321, 388, 424 

 Omentum, an, 60 

 OiniiuiatnphcH, 370 

 OnchUlutn, 237 

 Oiiiscits, 57, 396 

 Oiujchophorcu 40, 429 

 Onychoteiithis, 370 

 Operculum, an, 155, 157, 45° 

 Ophiuctis i-ireiis, 220 

 Ophiolepis ciliata, 416 



squamata, 415 

 Ophiura, 385 

 Uphiuridea, 34, 352, 380, 3S3, 386, 



415, 416,418 

 < >2>/ti'!/di(im, 81 

 (frr/u'stia, 243 

 Organ of Bojanus, 68. 143, 202, 204, 



243, 276, 282, 283 

 Organ of Semper, 366 

 Organs of special sense, 345-373 

 Orf/i/ia ((utitjua, 262 

 pudihuiida, 262 

 Orlbdtc'f, 440 

 Origin of life, 456 

 OrUiopteru, 41, 42, 46, 63, 194, 327, 



357, 394, 433. 435 

 Orijctes nasicoriii.s, 135, 136 



Oscula, 31, 243, 408 

 nstracodu, 55, 63, 192, 442, 443 

 Ostrea, 67, 69, 104, 105, 234, 237, 



238, 283, 397, 448 

 Ovipositor, a modified, 45 

 Ovipositors, 356, 438 

 Oxychlorocruorin, 154 

 Oxy haemoglobin, 131 

 OjcyurU ambiyua, 427 



F(((/aru8,2^i, 412, 446 



Fa<juridii\, 58, 446 



PaUiiodiciiioptent, 43 



Pakemon, 59, 104, 39O 



Pallium, 66, 70, 365 



Pulinurus quadrlcoriiift, 234 

 ruhjaris, 138, 178 



Palpi,4'2-45. 67, 361, 441 



PaludiceUa, 66 



Pulmlina vivipera, 169, 170, 237-239 



Pdiitphayus, 25 

 ' Pancreas, the Invertebrate, 35, 38, 

 40, 49-51. 55-58, 60, 64, 67, 72, 73, 

 76, 88, 91, loi, 103-108, III, 116, 

 238 



Pancreatiu, 82, 89, 96 



Pandora, 448 



Pantostomate being, a, 26 



Papilla feronia, 392 

 Machaon, 162 



Paraglossae, 45 



Paramoida, 28, 30, 81, 1 20, 207, 240, 



346, 375, 407, 408 

 Parapodia, 224, 388, 426 

 Parenchyma cells, 265 

 Parthenogenesis, 401, 415, 419, 43^1 



436, 437, 447 

 Patelhi vidijata, 72, 105, 108, 237, 238, 



239, 284, 285 

 Pearls, formation of, 277 

 Pecten, 67, 104, 368, 448 

 Pectostrai-a, 50, 56 

 Pedicelliiia, 447 

 Pedicidida; 359 

 Pelagic organisms, 250, 251 

 Pelodtjtes, 426 

 Penelliiia, 363 

 Pentacrinin, 216 

 Pentastoiiiida, 439 

 Pent a stoma III, 47, 439 

 Peptones, 93 

 Perforata, 25 



Pericardium, a, 191, 193, 282 

 Peridinec', 347, 376 

 Peripatus, 40, 260, 322, 324, 429 

 Periplaneta, 265, 325, 326, 327, 431, 



432 . 

 Peritricha, 377 

 Perivisceral cavity, 122, 127, 128 



129, 189, 200, 224, 236, 256, 276 

 Perlidd', 394 

 PItidlnsia nientula, 76 

 Pharynx, a, 35 40, 48-50, 65, 87, 236, 



239, 387. 388 

 Phascolo-sma elonyatum, 130 

 Pldoyopitora nieticidosa, 158-16 1 

 Phofa-f, 69 

 Pliolciis rioulutus, 49, 166 



