INDEX. 



475 



Trichogramma pretiosa, 386. 

 Trichoptera, defined, tj. 

 Triphleps insidiosus, 156. 

 Triungulin of meloid larva, 227. 

 Trochanter, defined, 26. 



in parasites, 379. 

 Trogoderma, 179. 

 Trogositidae, 182. 

 Trogus exesorius, 381. 

 Trox, 199. 



Trypeta ponionella, 366. 

 Tryxalinse, described, 87. 

 Tubulifera, 390. 

 Tumble-bugs, 198. 

 Turkey-gnat, 340. 

 Turkeys versus grasshoppers, 427. 

 Tussock moths, 268. 

 Twig-girdlers, 207, 210. 

 Two-striped tortoise beetle, 222. 



Uroceridae, 371, 374. 

 Urticating hairs, 273. 



Vagina, described, 46. 

 Valves of the heart, 32. 

 Vanessa antiopa, 244. 

 Vaporer moths, 268. 

 Vedalia cardinalis, 173. 



versus Icerya, 421. 

 Velvet ants, 400. 

 Venation, defined, 25. 

 Vermipsylla, species of, 329. 

 Vermorel nozzle, 456. 

 Vespa species, 405, 406. 

 V'espidae, 404. 

 Vestiture of bees, 408. 

 Vitriol, lime and sulphur, 443. 

 Viviparous plant-lice, 123. 



scale insects, 114. 

 Vision of insects, 41, 42. 



Walking-leaves, life history, 85. 



-sticks, life history, 85. 

 Washing trees in winter, 432. 

 Wasps are beneficial, 407. 

 Water as an insecticide, 452. 



-beetles, 169. 



Water-boatman, 150. 



-scavengers, 170. 



-striders, 151. 

 Wavy-striped flea-beetle, 221. 

 Waxy scales, 108, 112. 

 Web-worms, 266, 311, 317. 

 Weevils, defined, 228. 

 Whale-oil soap, 447. 

 Wheat-head army-worm, 296. 



Hessian fly in, 336. 



-midge, 338. 



saw-fly borer, 376. 



stalk-borer, 299. 

 Wheel-bug, described, 152. 

 White ants, life history, 64. 



ermine moth, 266. 



-faced wasp, 406. 



-grubs, 196. 



-pine weevil, 230. 

 Whitewash, usefulness of, 432. 

 Whirligig beetles, 169. 

 Willow saw-fly, 374. 

 Window flies, 371. 

 Winglet, defined, 366. 

 Wings, number and location, 12. 



structure of, 25. 

 Wings of the heart, 33. 

 Winter washing of fruit-trees, 432. 

 Wire netting against borers, 430. 

 Wire-worms, crane-fly larvas, 331 

 described, 182. 

 remedies for, 184. 

 Woolly apple-louse, 133. 



bears, 265. 



plant-lice, 133. 

 Worker-ants, 391. 

 Wrigglers, 332. 



Xiphidium species, 96. 

 Xylina antennata, 300. 



species, 300. 

 Xylocopa virginica, 412. 

 Xyloryctes, 203. 



Yellow-jackets, 405. 



-necked caterpillar, 275. 



Zeuzera pyrina, 287. 



31 



