INDEX. 



Trichogramma pretiosa, 386. 

 Trichoptera, defined, 77. ^ 

 Triphleps insidiosus, 156. 

 Triungulin of meloid larva, 227. 

 Trochanter, defined, 26. 



in parasites, 379. 

 Trogoderma, 179. 

 Trogositidae, 182. 

 Trogus exesorius, 381. 

 Trox, 199. 



Trypeta pomonella, 366. 

 Tryxalinae, 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. 



Under-sprayers, 461. 

 Uroceridae, 371, 374. 



Vagina, described, 46. 

 Valves of the heart, 32. 

 Vanessa antiopa, 244. 

 Vaporer moths, 268. 

 Vapors as insecticides, 450. 

 Vedalia cardinalis, 173. 



versus Icerya, 421. 

 Velvet ants, 400. 

 Venation, defined, 25. 

 Vermipsylla, species of, 329. 

 Vermorel nozzle, 456. 

 Vespa species, 405, 406. 

 Vespidae, 404. 

 Vestiture of bees, 408. 

 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, 433. 

 Wasps are beneficial, 407. 

 Water as an insecticide, 450. 



-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, 445. 

 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 motn, 266. 



-faced wasp, 406, 



-grubs, 196. 



-pine weevil, 230. 

 Whitewash, usefulness of, 422. 

 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, 433 

 Wire netting against borers, 430. 

 W'ire-worms, crane-fly larvae, 331 

 described, 182. 

 remedies for, 184. 

 Woolly apple-louse, 133. 



bears, 265. 



plant-lice, 133. 

 W^orker-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 



