INDEX 



723 



Nymphalid pupae, 631. 



Nymph, 706; stage, 593, 600, sub-, 701. 



Occipital foramen, 46. 



Occiput, 48, 53. 



Ocellus, 249; development of, 507. 



Ockler, on feet of insects, 115. 



Odonata, 53; embryology of, 540; la- 

 bium of, its mode of origin, 549; lat- 

 eral gills of, 4<>8 ; lingua of, 73 ; number 

 of moults of, 610 ; nymphs, 4(iO, 4ti3. 



Odors, 3(38. 



(Ecanthus, 476; embryology of, 541, 544, 

 549, 551, 573. 



CEceticus, 634. 



OEnocytes, 423. 



OEsophageal valve, 311 ; valvule, 312. 



(Esophagus, 303. 



(Estridre, 618. 



Oken, on homology of maxillre with legs, 

 39. 



Olfactory organs, 264. 



Oligonephria, 354. 



Oligoneuria. 466. 



Ommateum, 250. 



Onychium, 97. 



Oo'lemma, 520. 



Ootheca, 517. 



Operculum, 181. 



Optic nerves, 050. 



Optic tract, 253. 



Opticon, 253. 



Oral appendages, 549. 



Orchelimum, .">:;(. 



Organ, dorsal, 535, 556. 



Organs, sensory, 249; of smell, 264. 



Orgyia, 377, 618 ; poisonous hairs of, 

 192. 



Orgyia antiqua, number of moults of, 

 618. 



Orthoptera, foetid glands of, 369; num- 

 ber of moults of, 616; phagocytes in, 

 421; salivary glands of, 331; tongue 

 of, 70. 



Orya, 424. 



Osmeterium, 377. 



Osten Sacken, on holoptic heads of Dip- 

 tera, and on running flies, 98. 



Ostia, 397, 400. 



Otiocerus, 58. 



Oudemans, on relation of myriopods to 

 insects, 17. 



Oustalet, on rectal respiration, 46,'!. 



Ovarian tubes, 501 ; formation of, 578. 



Ovaries, 500, 502; formation of, 578; 



groups of, 502. 

 Oviduct, 500, 503; double openings of, 



486; origin of, 578, 579. 

 Oviducts, seginental arrangement of, 



486. 



Oviposition, 518, 520. 

 Ovipositor, 167; germinal buds of, 665; 



imaginal buds of, 666; origin of, 551. 

 Ovum, 515, 521, 524. 



Packard, A. A., on muscular power of 

 insects, 219; use of air-sacs, 457. 



Pad, peripodal, 653. 



Panlogenesis, 708. 



Paleacrita vernata, maxilla of, 66. 



Paleolepidoptera, 628. 



Palmen, on double sexual openings, 490, 

 492; on tracheal gills, 459, 466; on 

 the tentorium, 50. 



Palmula, 97. 



Palpifer, 63, 68. 



Palpus, first maxillary, 63, 64, 67 ; sec- 

 ond, (18; in Hemiptera, 68. 



Palpi, labial, imaginal buds of, 658. 



Pancritius, on wing-germs, 130, 143. 



Paniscus, 517. 



Panorpa, abdomen of, 162 ; maxilla of, 

 65; number of moults of, 616. 



Panorpida?, 602. 



Papiiio, 377. 



Paraglossa, 54, 68. 



Parapodial glands, 444. 



Paraptera, 89. 



Paruassius, 381. 



Paronychium, 97. 



Paraponyx, 470. 



Passalus, 61 : rectal glands of, 318. 



Pasteur, on the spectrum of the light of 

 the firefly, 426. 



Patagia, 89. 



Patten, on embryonic abdominal appen- 

 dages, 550 ; on the homologies of the 

 trachea', 444; salivary glands, 337. 



Patula, 391. 



Pauropus, 18. 



Paussus, 57. 



Pawlowa, on blood-vessels in the head, 

 405. 



Pedicel, 57. 



Pediculina, embryology of, 541. 



Pelidnota, moulting of, (511. 



Pellicle, subimaginal, 613. 



Pelobius, 461, 475. 



