398 



INDEX 



Phormia, antenna of, *26; eyes, *25; meta- 

 morphosis, *i2j; phototropism, 290 



Phosphorescence, 105 



Photinus, luminosity of, *io5, 106 



Photogeny, 105 



Photopathy, 287 



Photophil, 287 



Photophob, 287 



Phototaxis, 287 



Phototropism, *286 



Photuris, 106 



Phragmas, *4o 



Phthirius, 216 



Phyciodes, coloration of, 164, *i6j 



Phylloxera, 325, 328 



Phylogeny, 4, *6, 17, *2o, 323 



Physopoda, *i2, 18; origin of, *2o 



Phytonomiis, legs of, 43; spread of, 316 



Phytophaga, 16, *ij 



Pictet, on coloration, 162, 164 



Piepers, 374 



Pieris, color sense of, 91; dispersion, 300; 

 fat-cells, *iO4; imaginal buds, *i4g; ol- 

 factory organs, *8i; scale, *6i; napi, 

 temperature experiments on, 168; proto- 

 dicc, sexual coloration of, *i6g; rapce, 

 androconium of, *63; developing wing, 

 *i5o; distribution, 316; eggs, *i2g; food 

 plants, 196; hair, *6o; larval tissues, *io3; 

 pupal coloration, 163; wing vibration, 51; 

 xanthodice, distribution of, 300 



Pigmental colors, 160 



Pigments of eyes, *87, *88, *89, *9o; nature 

 of, 161; of Pieridae, 161 



Pilifers, *33 



Pimpla, 257 



Pine, insects of, 195 



Pinguicula, 199 



Placodeum, *~j6 



Plague, 245 



Planta, *2io 



Plants, insectivorous, 199; insects in relation 

 to, 195 



Plasma, 101 



Plasmodium, *235 



Plateau, on color sense, 91; muscular power, 

 70; respiration, 112; 345, 351, 354, 356, 

 358, 361, 381 



Plate phemera, *3ip 



Plathcmis, abdominal appendages of, *58; 

 antenna, *4i 



Plainer, 360 



Platygaster, hypermetamorphosis of, 135, 

 *i' 4 6 



Platypsyllus, 216 



Platyptera, defined, 8; origin of, 18, *2o 



Plecoptera, denned, 10, *n; nymph, *i3i; 

 origin, 18, *2o 



Pleistocene insects, 319, 323 



Pleurites, 38, *3Q 



Pleuron, 37 



Plotnikow, 351 



Pocock, 341 



Podical plate, *s8 



Podisiis, egg of, *i28; predaceous, 



Paecilocapsus, color changes of, 177 



Pogonomyrmex, 279 



Polar bodies, *n8 



Poletajeff, N., 352 



Poletajew, O., 361, 369 



Poletajewa, 358 



Poliomyelitis, 252 



Polistes, behavior of, 294, 299; habits, 271; 

 wing vibration, *5o 



Politcs, on Iris, *2o8 



Pollenizers, insect, 207 



Pollination, 201, 207; of Iris, *2O3; milk- 

 weed, *204; orchids, 203; Yucca, *205, 



*206 



Pollinia, *2O4 



Polybia, 270 



Polyembryony, 125 



Polyergus, 276 



Polygoneutic, 168 



Polygonia, dimorphism of, 166; egg, *i28 



Polymorphism, 166, 271 



Polynema, 146 



Polyphemus (see Tdea) 



Polyphylla, assembling of, 82 



Polyrhachis, 273 



Pompilus, behavior of, 294, 298 



Porthctria d is par, damage by, 328; herma- 



phroditism, *ii7; tracheae, *ui 

 Post-genas, 22 

 Postscutellum, *38 

 Potato beetle (see Leptinotarsa) 

 Pouchet, 361, 380 

 Poulton, on adaptive coloration, 189, 190, 



192; on colors of larvae and pupae, 162, 



163; 368,370,371,372,373,374 

 Powell, 369 

 Pratt, 368 

 Predaceous insects, 215, *253; in relation to 



birds, 226 

 Premandibular, appendages, *i2i; segment, 



36 



Pricer, 380 



Primitive insects, 17, 18 

 Primitive streak, 119 

 Primordial insect, 17 

 Prionus, assembling of, 82; eggs, 130 

 Proboscis, *33 



Procephalic lobes, *i2o, *i2i, *i22 

 Proctodasum, 93, 95, 120 

 Proctotrypidae, 21, 256 

 Prodoxus, 207 

 Prodryas, *323 

 Prognathous, 9 

 Promdhea (see Callosamia) 

 Pronotum, *38 

 Pronuba, *205, *2o6 

 Propodeum, 37, 52 

 Propolis, 266 

 Protapteron, 5 

 Protective, adaptations, 231; mimicry, *i84, 



191; resemblance, *i78, 181 

 Prothorax, 37 

 Protocerebrum, 71, 124 



