578 



PERIPATUS MYRIAPODA INSECT A 



Orders, 172 



Orientation, 112 



Origin of wings, 206 



Orl-fly, 445 



Ormerod, Miss, on importation of locusts, 

 299 



Ornament, 200, 215, 233 f., 243, 244, 

 282, 302, 313, 339 



Orphania denticauda, 321 



Orthodera ministralis, 249 



Orthoderides, 251, 259 



Orthophlebia, 453 



Orthoptera, 172, 198-340, 407 



Oryssidae, 506 



Oryssus abietinus, 506 ; 0. sayi, 506 



Osborn on Menopon, 350 



Osmylides, 466 



Osmylina, 466 



Osmylus chrysops, 341 ; larva, 466 ; 0. 

 maculatus, 466 



Osten Sacken on similar gall-flies, 532 



Ostia, 48 f., 133, 435 



Oiulemans on Thysanura, 182 



Oustalet on Odonata, 422, 423 



Outer margin of wing, 108 



Ovaries, 137, 138 ; of earwigs, 211 ; of 

 Oedipoda, 283, 284 ; of Perla, 404 ; of 

 Thysanura, 188 



Oviduct, 139, 392 



Oviposition, 229, 246, 265, 290, 291, 440 ; 

 of Agriotypus, 557 ; of Cyuipidae, 527 

 f., Adler on, 529 ; of Encyrtus, 545 ; 

 of Ichneumon, 555 ; of inquiline gall- 

 flies, 532 ; of Meconema, 321 ; of Pele- 

 cinus, 564 ; of Pimpla, 553 ; of Poda- 

 grion, 546 ; of sawflies, 513 ; of Sirex, 

 509 ; of Xiphidium, 321 



Ovipositor, 110, 552, 554 ; Cynipid, 524 ; 

 of Locusta, development, 314, 315 



Owen, Ch., 40, 78 



Oxyethira, 484 ; 0. costalis, larva, 485 



Oxylmloides, 234, %41 



Oxyura, 533, 534 



PACHYCREPIS, 550 



Pachytylus cinerascens, 293, 297, 298, 299, 

 308 ; P. marmoratus, 298 ; P. migrator- 

 ioides, 298 ; P. migralorius, 298, 299, 

 308 ; P. nigrofasciatus, 285, 298 



Packard, on cave-Myriapods, 34 ; on air 

 sacs of locusts, 283, 294 ; on classifica- 

 tion, 173 ; on development of Diplax, 

 419 ; on may-flies, 430 ; on metamor- 

 phosis of Bombus, 497 ; on scales, 397 ; 

 on spiral fibre, 129 



Pad, 105 



Paedogenesis, 142 



Pagenstecher on development of Mantis, 

 247 



Palaeacrididae, 309 



Palaeoblattariae, 239 



Palaeoblaltina douvillei, 238 f. 



Palaeocampa, 73 



Palaeodictyoptera, 486 



Palaeomantidae, 259 



Palaeontology, 178 



Palaeophlebia superstes, 427 



Palaeozoic, Myriapods, 76 ; Insects, 343, 

 486 



Palingenia bilineata, 430 ; P.feistmantelii, 

 443 ; P. papuana, 441 ; P. virgo, 431 



Palmen, on dragon-fly nymphs, 423 ; on 

 Ephemeridae inflation, 439 ; on gills of 

 Perlidae, 402 ; on rectal gills, 422 ; on 

 tracheal system of immature Ephe- 

 meridae, 436 



Palmon, 546 



Palmula, 105 



Palophus centaurus, 275 



Palpares, 454 



Palpiger, 95 



Palpus, 95 ; of Pieris brassicye, 122 



Pambolus, 561 



Pamphagides, 303, 310 



Panchlora viridis, 229 



Panchlorides, 241 



Panesthiides, 841 



Paniscus virgatus larva, 555 f. 



Panorpa, 450, 453 ; leg, 104 ; P. com- 

 munis, 449 ; larva, 452 



Pauorpatae, 175, 453 



Panorpidae, 44$i 451 



1'antel on phonatiou of Cuculligera, 304 



Papiriidae, 191 



Paraderm, 164 



Paraglossa, 95, 96, 96 



Parapteron, 100, 101, 102 



Parasites, 540 f., 543 ; external, 555 



Parasitica, 520, 521 



Parasitism, 521 f., 535, 559, 560 



Parthenogenesis, 141, 481, 497, 516 f. 

 530 f., 547 ; utility, 517 



Passalidae, mandibles, 95 



Patagia, 102, 103 



Patagonia, 459 



Paunch, 348, 360, 446, 448 



Paurometabola, 158, 199 



Pauropidae, 33, 42, 47 



Pauropoda, 47, 57, 77, 79 ; structure, 62 



Pauropus, 47 



Pazlavsky on bedeguar, 527 



Pedicellate, 519 



Pedunculate body, 495 



Pelecinidae, 563 



Pdecinus polyturator, 563 



Pelopaeus spinolae foot, 105, 106 



Perez on Termes, 366, 382 



Perga lewisii, 517 



Periblast, 149 



Pericardial septum, 134 ; sinus, 134 ; 

 tissue, 135 



Peringueyella jocosa, 325 



Peripatus, 1, 6, 23, 77, 79 ; tracheae, 3, 

 14, 15 ; affinities, 4 ; external features, 



