578 



PERIPATUS MYRIAPODA INSECTA 



Ophiouides, 557 



Opisthocosmia cervipyga, 215 



Opisthopatus, 24, 24 n. 



Orders, 172 



Drientation, 112 



Origin of wings, 206 



Orl-riy, 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. 

 viaculatus, 466 



Osten Sacken on similar gall-flies, 532 



Ostia, 48 f., 133, 435 



Oudemans on Thysanura, 182 



Oustalet on Odonata, 422, 423 



Outer margin of wing, 108 



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

 Oedipoda, 283, 284 ; of Ferla, 404 ; of 

 Thysanura, 188 



Oviduct, 139, 392 



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

 of Agriotypus, 557 ; of Cynipidae, 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 ; 

 ot Locusta, development, 314, 315 



Owen, Ch., 40, 78 



Oxyethira, 484 ; 0. costalis, larva, 485 



Oxyhaloides, 234, S4I 



Oxyura, 533, 634 



Pachycrepis, 550 



Pachytylus cinerascens, 293, 297, 298, 299, 

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

 ioides, 298 ; P. migratorius, 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 Boinhus, 497 ; on scales, 397 ; 

 on spiral fibre, 129 



Pad, 105 



Paedogenesis, 142 



Pagenstecheron development of i1/a7i^i5, 247 



Palaeacrididae, 309 



Palaeoblattariae, 239 



Palaeohlattina douvillei, 238 f. 



Palaeocampa, 73 



Palaeodictyoptera, 486 



Palaeomantidae, 259 



Palaeontology, 178 



Palaeophlebia superstes, 427 



Palaeozoic, Myriapods, 76 ; Insects, 343, 4? 



Palenarthrus, 80 



Palingenia bilineata, 430 ; P.feistmantelii, 

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



Palmen, on dragon-fly iiymphs, 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 centaur us, 276 



Palpares, 454 



Palpiger, 95 



Palpus, 95 ; of Pieris brassicae, 122 



Pambohis, 561 



Pamphagides, 303, 310 



Panchlora viridis, 229 



Panchlorides, 24I 



Panesthiides, 24I 



Paniscus virgatus larva, 555 f. 



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

 munis, 449 ; larva, 452 



Panorpatae, 175, 453 



Panorpidae, 449, 451 



Pantel on phonation of Cucullinera, 304 



Papiriidae, 191 



Paraderm, 164 



Paraglossa, 95, 96, 96 



Paraperipatus, 24 n. 



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, 80 ; structure, 62 



Pauropxis, 47 



Pazlavsky on bedeguar, 527 



Pedicellate, 519 



Peduncidate body, 495 



Pelecinidae, 563 



Pelecinus polyturator, 563 



Pelopaeus spinolae foot, 1 05, 106 



Perez on Termes, 366, 382 



Perga lewisii, 517 



Periblast, 149 



Pericardial septum, 134 ; sinus, 13^ 

 tissue, 135 



Peringueyella jocosa, 325 



