430 



GENERAL INDEX 



Piophila, 242 



planidium, 333 



Platyedra, 165 



Platygaster, 356 ; protopod larva, 57 



Plecoptera, 21, 36 ; fossil forms, 97 



Plesiocoris, 296 



pleuron, 28 



Pleurotropis, 329, 386, 404 



poly em bryony, 353 



Polygnotus, 356 



polypod larvae, 58 



Polysphincta, 60 



Pontania, 295 



PopiUia, 159, 381, 384 



Porosagrotis, 212 



postmentum, 35 



pre-antennse, 12 



prementum, 35 



prepupa, 64 



pretarsus, 23 



prickly pear, biological control of, 413 



Promecotheca , 388 



Prosena, 335, 384 



Protagrion, 80 



Protelytron, 84 



Protelytroptera, 83 



Protereisma, 89 



Protoblattoidea, 76, 95 



Protocoleoptera, 82 



Protocoleus, 83 



Protodiptera, 85 



Protodonata, 79 



Protohemiptera, 81, 97 



" Protohymenoptera," 78 



Protomecoptera, 99 



Protoparce, 231 



Protoperlaria, 80, 97 ; nymph, 81 



Protophasma, 11 



protopod larvae, 56 



Protorthoptera, 75, 95 



Protozoa and termites, 246 ; and 



Cryptocercus, 247 

 Protura, 28, 42 

 Pseudapkycus, 374 

 Pseudococcus, 373 

 Psylla, races of, 290 

 Pteromalus, 386 

 Ptychomyia, 387 

 pupae, 63 



Pyrameis, 133, 137, 138 

 Pyransta, 221, 287, 381, 382 



Quaylm, 379, 398 



ragwort, control of, 418 



rectal papillae or " glands," 229 



respiration in endoparasites, 347 



Rhabocnemis, 372 



Bhacodineura, 332, 334 



Rhagoletis, 296 



Rhodnius, 6, 7, 12, 132, 154, 230, 250 



hormones in, 66, 69, 70 

 Rhyniella, 86 

 Rhyssa, 385 

 Riela, 365 

 Rodolia, see Vedalia. 



Saissetia, 378 



Schistocerca, 304, 308 



Schizaspidia, 334, 365 



Schoenobnis, 165 



Scolia, 373, 405 



scolopale, 105 



Scolopendra, 1, 14, 32 



Scutellista, 378, 399 



Scut ig era, 14 



Scutigerella, 28, 32 



Selenia, melanism, 198 



sense organs, 103 



sense-rods, 105 



sensillse, 103 



sequence theory of parasite control, 401 



shot -hole borer, 271 



sinigrin, 158 



Sitodrepa, 216, 247 



Sitotroga, 230, 408 



Sminthurus, 230, 254, 273 



soil conditions and insect attack, 267 



standard metabolism, 218 



Stenobothrus, 7 



Stenodictya, 76 



Stenoperlidmm, 89, 97 



stimulatory organs, 153 



subcoxa, 27 



sugar cane froghopper, 268 



superparasitism, 325 



symbiosis, 245 



Symphyla, 24, 28 



Tachinidae, parasitism in, 251 



tactile sense, 139 



tarsal perception, 133 



Telea, 222 



temperature, 206 ; alternating, 210 ; 



summation, 216 

 Tenebrio, 47, 131, 209, 219, 228 

 tentorium, 14, 15 



