INDEX. 



293 



232, 233, 245, 246, 262, 269, 276, 



277, 280. [See Structure.] 

 Habits, social, 92, 216, 229, 239. 



of observation, 221. 



Hadena, 207. 



Hagen, 11, 56, 96, 99, 132, 179. 



Hair-streaks, 218. 



Halteres, 140, 141, 143, 162, 168, 253, 



272. 

 Hammond, 232, 250, 253. 

 Harpalus caliginosus, 156. 

 Harris, 243. 



Harvest-fly, 8, 118, 131. 

 Hawk-moth, 188, 208. 

 Head, 47, 97, 102, 106, in, 122, 127, 



131, 142, 151, 158, 161, 162, 172, 174, 



200, 233, 239, 240, 259-261, 263, 265, 



267, 271, 272. [See Descriptions 



of types.] 

 Heart, 35, 38. 

 Heliozela, 202. 

 Hemerobidse, 172, 174. 

 Hemiptera, 8, 60, 62, 68, 115, 118, 142, 



166, 245, 275, 285, 286. 

 Hemipterous organs, 122. 

 Henslovv, 224, 225. 

 Heodes Hypophlseas, 218. 

 Heredity, laws of, 54, 55, in, 280. 

 Hermit crab, 180. 

 Hesperidae, 212. 

 Hessian-fly, 263. 

 Heteroctra, 196. 



Heteroptera, 115, 121, 142, 143, 166. 

 Hickory-tree borer, 163. 

 Hickson, 20. 

 Hippobosca equina, 273. 

 Hippoboscidse, 272, 273. 

 Holland cloth, 31. 

 Home, 252. 



Homoplastic forms, 141. 

 Homoptera, 115, 131, 141-143. 

 Honey-bee, 223. 

 Honey-dew, 136. 

 Hornets, 241. 

 Hornia minutipennis, 159. 

 Horntails, 232, 244. 

 Horse-flies, 248, 263. 

 Horse-tick, 273. 

 House-fly, 248, 254, 265. 

 Humble bees, 244. 

 Humming-bird, 210. 



moth, 208. 



Huxley, 104, 137. 



Hyatt, 225, 284. 



Hydrophilidse, 156. 



Hymenoptera, 21, 47, 51, 68, 92, 223, 



227, 244, 287. 



Hymenoptera Aculeata, 17, 230, 232, 

 238, 247, 258, 274. 



Terebrantia, 230, 231. 



Hypermetamorphoses, 159, 168, 280. 

 Hypodermis, n. 

 Hypopharynx, 260, 261. 



I. 



Ichneumon-flies, 235, 237. 



Ichneumonidse, 233, 235, 237. 



Ileum, 35. 



Illinois, 207. 



Incisalia irus, 203. 



Indirect metamorphosis, 44. 



j development, 283. 



! Infra-oesophageal ganglion, 37, 261. 



Insecta, 8, 62, 123, 281. 



Insect migrations, 215. [See Migra- 

 tions.] 



Instinct, 227, 236. 



Internal anatomy, 35. 



Intestine, 35. 



Ithycerus noveboracensis, 164. 



Japyx, 61. 



Jaws, vertical motion of, 24. 



Johnson, 116. 



Kangaroos, 28. 

 Katydids, 9, 108. 

 King and queen caste, 94. 

 Kingsley, 64. 

 Kirby, 70, 100. 



and Spence, 259. 



Kraepelin, 265. 



Labrum, 23, 77, 117. 



Labrum-epipharj'nx, 261. 



Lac-insect, 141. 



Lace-winged flies, 170, 172, 175. 



Lachnosterna fusca, 145. 



Lacinia, 24. 



Lacteal vessels, 35. 



Lacunae, 38. 



Lady-birds, 155, 166 



Lake Winnipeg, 71. 



Lamellicorns, 147, 151, 166, 167. 



Lampyridae, 151, 152, 167. 



Lampyris, 152. 



Land-snails, pulmonary sacs of, 59. 



Larva, aquatic, 57, 58, 91, 156. 



caterpillar, 68, 153, 174, 177, 221, 



