

495 



t, i ;S, * 

 Phylloxi-rti, .$50, 410, : 



Phvln: 



PhytonoHin^. spread oi 



PhytopliaiM. ' i <> 

 Phytophagous. 



I'ii tct. <.n . olormtion 



Piepcrs. 400 



Pierre. 14, 157, 154, }fo ;'S, 375,376, 378, 

 463, 466 



IM of, 100; dispersion, 322; 

 fat odb, *MS; imaginal buds, ' 

 o]f;u -t..r\ organs, *go; scale, *6Q; <//>/: 

 temperature experiments on, 182; pro- 

 lodicc: sexual coloration of, *i84; 

 rupee: androconium of, *;i; developing 

 wing, "163; distribution, 338; eggs, 

 *i4o; food plants, 213; hair, *68; larval 

 tissues, *ii3; pupal coloration, 177; 

 wing vibration, 59; xanthodicc, distri- 

 bution of, 322 



Pigmental colors, 174 



Pigments, of eyes, *g6, '97, *98, *99; nature 

 of, 175; of Pieridae, 175 



Pilifers, *4o 



Pimpla, 274 



Pine, insects of, 212 



Ping, 476 



Pinguicula, 216 



Pink boll worm (see Pectinophora). 



Placodeum, *85 



Plague, 260 



Planta, *228 



Plant lice (see Aphididat). 



Plants, diseases of, 218; insectivorous, 216; 

 insects in relation to, 212 



Plasma, no 



Plasmodium, 248 



Plateau, on color sense, 100; muscular 

 power, 79; respiration, 123; 441, 444, 

 446, 449, 468 



Platephemera, *342 



Plathemis, abdominal appendages of, *66; 

 antenna, *32 



Platygaster, hypermetamorphosis of, 146, 

 *i58 



Plalypsyllns, 234 



Platyptera, denned, 10; origin of, 22, *25 



Plecoptera, defined, 14, "13; nymph, "142; 

 origin, 22, *25 



Pleistocene insects, 341 



Plenties, *45, *47 



Plcuron, 45 

 Ploiniknw, 441 



l'.)di< ,il pi 



'laccous, '270 



I'n-i it. of, IQO 



^97 



Polar Inxlic-;, * r 2Q 



I'olrt.-ijew, 449, 4SS 



Poliomyelitis, 269 



Politics, behavior , 288; 



wing vibration, '58 



Pal Hi's, on Iris, '226 



Pollenizers, insect, 225 



Pollination, 219, 225; of Iris, *22o; milk- 

 weed, 221, *222; orchids, 221; Yucca, 



222, *224 



Pollinia, * 222 



Polybia, 287 



Polyembryony, 136 



Polyergus, 294 



Polygoneutic, 182 



Polygonia, dimorphism of, 180; egg, *i39 



Polymorphism, 289 



Polynema, 158 



Polyphagous, 373 



Polyphemus (see Telea). 



Polyphylla, assembling of, 90 



Polyrhachis, 291 



Pomace flies (see Drosophila). 



Pompilus, behavior of, 316, 319 



Popillia japonica, 418 



Porthetria dispar, damage by, 416; distribu- 

 tion by winds, 368; gynandromor- 

 phism, *i28; tracheoles, *i2i 



Postclypeus, 29 



Postgenae, 29 



Postscutellum, *45, *46 



Potato beetle (see Leptinotarsa). 



Pouchet, 468 



Poulton, on adaptive coloration, 200, 207, 

 209; on colors of larvae and pupa-. 

 454, 457, 458, 459, 460, 461 



Powell, 139, 455 



Pratt, 454, 455 



Precipitation, 366 



Predaceous insects, 233, ".270; in relation 

 to birds, 245 



Prell, 434 



Premandibular. appendage-. *i ;j; segment. 

 *43. 44 



