INDEX 



557 



Xemura, J/Jfl 



Xepa, Jf^O 



Nephelis, ISl ; vascular system, 249 



Nephridia, 235 ; as ducts for sexual pro- 

 ducts, 243 ; excretory organs, 243 ; per- 

 manent, 239 ; phylogenetic origin of, 

 247 ; provisional or embryonic, 237, 

 238 



Nephroblasts, 279 



JS'ephrops, 29S 



Kephthys, ISS 



„ scolopendroides, 251 ; section, 

 252 



Xereidce, 182 



Nereis cultrifera, 239 



Xerocila, '295 



Neural plate, 167 



Neurilemma, 52 



Neuroblasts, 278 



Neurochord (Vermes), 222 ; (Crustacea), 

 351 



Xeuroptera^ J^41 



NicoUtia, 439 



Noctiluoa, 8 



,, miliaris, 9 



Xoctuifonnes, 443 



Noctuina, 44'2 



Kon-Calcarea, 60 



Notodelpliys, 291 ; trunk feet, 316 



agilis, anterior maxilte, 312 

 ,, Almannii, mandibles, 311 



Notodontidce, 44^ 



Xotojnastiis, 181 



Sfotmnrruita, 185 



Notonecta, 440 



Xotopoda, 299 



Xotopygos, 182 



Nucleus, 1 



Nuda, 72 



Nycterihia, 443 



Nymphalidm, 44^ 



Nymphon, 4^4 



,, hispidum, 423 



Obelia geniculata^ 68 

 Obisium, 509 



,, silvaticum, heart, 527 

 OceUata, 97 

 Ocelli, 469 



Ocneria, mouth parts, 448 

 Octocorcdlia, 70 

 Ocypoda, 300 

 Odonata, 439 

 Odontoblasts, 45 

 (Ecanthus, 454 

 CEdemeridce, 441 



(Edipoda, 439 ; sexual organs, 485 

 CEslridce, 443 

 Olenus, 415 



Oligoclmta, 181 ; nephridia, 240 

 Oligocladus, 146 

 Olindias MilUeri, 69 

 Olynthus, 60, 62 



Ommatidium, 353, 471 

 Orecia, 264 

 Ootype, 159 

 Oniscidce, 295 

 Onyc/wphora, 4^7 

 Operculum, 417 

 Opheliacea, 181 

 Ophiusidm, 44^ 

 Ophrydmm, 11 

 Opisthotrema, 162 

 OrhUelarice, 510 

 Orchestia, 296 



,, caviinana, 294 



Oribatidm, 510 

 OHhezia, 463 

 Orthonectidw, 58 

 Ortlwptera, 439 ; sexual organs of larva 



485 

 Oscarella, 61 



,, lobularis, section, 65 



Osculosa, 7 

 Osteoblasts, 45 

 Ostia, 358 

 Ostracoda, 290 

 Oxycephalus, 296 

 0:cyrhyncha, 299 

 Oxystmnata, 299 

 Oxytficha, 9 

 Oxyuris vermicularis, 180 



Pachydrilus, 181 

 Pedogenesis, 502 

 Faguridce, 298 

 I'aliBmon, 298 



,, • Squilla^ eyes, 354 

 Palceone7nertina, 178 

 Palingenia, 439 

 Palingenesis, 118 

 PalinuHdcs, 298 

 Palinurus, 298 ' 



, , Phyllosoma of, 395 



Pallene, 424 

 Palpons, 112 

 Paludicella, 184 

 Pandorina, 8 

 Panorpata, 441 

 Pantopoda, 422-425 

 Paradesmus gracilis, 459 

 Paradoxides, 415 

 Paraguatha, 315 

 Paramwciuvi, 9 



,, aurelia, 17 



Paranebalia, 293 



,, longipes, anterior maxillae, 



312 ; posterior maxillae, 



313 

 Parapodia, 188 

 Parasitism, 172 

 Parthenogenesis (Vermes), 266 ; (Insecta), 



501, 502 

 Parthenogonidia, 21 

 Pauropoda, 438 

 Pedicellina, 184 ', larva, 271 



