2 5 2 



INDEX. 



Organization of Mantidae, as a whole, 12 

 is in conformity with a carnivorous life, 



9, 12, 13 

 is superior, 12 



Organs of flight of Mantidae, 13 

 Ornithoptera, the Bird- winged Butter- 

 flies, 177, 181 



Oviposition in Acridiidae, 94 ; gonapo- 

 physes, deposition of eggs, use of 

 fluid discharged, soil preferred, time 

 required for, extent of period, number 

 of egg-masses, 95, 96 

 in Mantidae, 16 

 in Phasmidae, 53-55 



Pachytylus cinerascens, 107, 108 

 marmoratTiS) 107 

 migratorius, 107, 108 

 Packard, on arrangement of air-sacs in 



Rocky Mountain Locust, 85 

 Pages. See Uraniidae 

 Pamphagides, 135 



Saussure, de, on their geographical 



distribution, 136 

 Paonias and .Calasymbolus, extremely 



beautiful genera, 228 

 Papilio memnon, remarkable variety in 



the form of the females, 181, 182 

 Papilios in Nicaragua, sucking up 



moisture, 178 

 Parasites, of eggs of Mantidae, 21 



of eggs of Acridiidse, 98 

 Peringueyella, its slender stick-like forms, 



155 



Periodicity, no law of, governing de- 

 structive flights of locusts, in 

 Phantasis, absence of elytra in, 43 

 Phasmidae, general peculiarities, 41 

 appearance grotesque, 41 

 distribution of, 76 

 enemies of, 48 



Phasmidse, marvellous imitative resem- 

 blance of vegetative objects, 60 

 modification for aquatic life, 50 

 Phylliides, the tribe, 41, 68 

 Phyllium, moults of, 56-58 

 number of species known, 68 

 seasonal change of colour in, 57, 102 

 specimens exhibited in Paris, 74 

 the genus confined to tropics of Old 



World, 68 



Plant Types of Mantidae, 26 

 their presentment of the phenomenon 

 of Protective and Aggressive Re- 

 semblance, 25-27, 30, 35 

 Pneumorides, 132, 134 



Pneitmora scutellaris, 135 

 Podacanthus, 47, 64, 76 

 Post-embryonic development, of Acri- 

 diidae, 101 ; change of colour in 

 course of development, 101, 102 

 of Phasmidae, 56 ; number of moults, 



56 

 I Poulton on disappearance of beauty of 



male Moths, 214 

 Prisopi, the, aquatic habits of, 50 

 Prochilus australis, resemblance to Phas- 

 midae, 155 

 Proscopides, 132 



Protective and Aggressive Resemblance 

 of Orthoptera, 25, 60, 67, 132, 136, 



139, 153, 154 

 Prothorax of Mantidae, modification of, 



II 

 its development shows its importance, 



12 



its remarkable elongation and mobility, 



I r, 12 ; to what due, 12 

 Psychidae, the Case Moths, 203 



change to imago, 206, 211, 216; sup- 

 posed assistance of long sticks at 

 event, 212 ; subsequent life of male, 

 and general characters, 212, 213 



coming of age of male, preparation for 

 pupal sleep, 211 



