INDEX 



343 



Humble-bees, nests of, 280 



— parasites and insects in nests of, 282 

 Huxley, quoted, 35 



Ifydrocampa, 317 

 Ifydrometridic, 310 

 Hydrophilida, 78, 310, 313 

 Hydropsyekidrs, 1^2 

 Hylurgut, 83 



Hyraenoptera, 53, 59, 90, 1GS, 2G6, 318 

 Hymcnopus, 174 

 Hypermetamorphosis, 27 

 Hyperparasitistn, 331 

 Hypoderraa, 94, 20G, 323 

 Jfypolimnas, 15G, 157 

 Hystrichopsylla, 95 



lASSID.35, 72 



Iccrya, 330 



Ichneumon flies, 96, 98, 163, 185, 264, 



318 

 Idolivm, 175 

 Imagines, 93, 2G5 

 Inquilines, 98, 271, 282 

 Insectivorous animals, 244 

 Insects, aquatic, 310 



— as medicine, 332 



— behaviour of, 118 



— benefits to mankind, 330 



— biting or mandibnlate, 42 



— blood-sucking, 186 



— body-rings of, 31, 33 



— carnivorous, 175 



— carrion-feeding and scavenger, 173, 

 188, 231 



— classification, 57 et seq. 



— coloration, 128, 142, 144. 256, 258, 

 259 



— commercial products of, 332 



— communities, 274 



— courtship of, 252 



— development of young, 14 et seq. 



— dissemination of disease by, 323 



— eaten by man, 332 



— enemies of, 244 



— fecundity of, 171 



— fertilisation of plants by, 215, 218 

 et seq. 



— flight of, 48 



— flower-loving, 214 



— general characters of, 31 



— geographical distribution of, 8, 9, 10 



— hypermetamorphosis of, 27 



— hyperparasitism of, 331 



— in hot springs, 10 



— instincts of, 122 



— mankind in relation to, 319 



— migrations of, 11, 275 



— mimicry by, 144, 148, 149, 152, 156, 

 159, 161, 173 



Insects, numbers of species, 8 



— origin of, 29 et teq. 



— parasitic, 187 



— parenthood of, 206 et seq., 262 



— pests, 319 



— plant-eating, 192 



— protective resemblance in, 128, 247 



— relative sizes of, 1 1 



— scent production by, 254 



— senses of, 101 



— sexual selection in, 256 



— sounds of, 108 et seq. 



— sucking, 42 



— symbiosis among, 206 



— typical characters of, 1 et seq. 



— vision, 106 



— viviparous, 13 



— warning colours and mimicry, 144 



— wood-boring, 193 



— young forms, 13 

 Instincts of insects, 122 



Iris, adjustment for insect visitors, 226 

 Isoptera, 66 

 Ithomiince, 92, 146 



Janet, 296 



Jiggers, 95 



Juguni, 85 



"Jumpers," 73 



" Jumping beans," 198 



" Ked " or " sheep tick," 46, 95, 183 

 Kerner, quoted, 207, 239 

 " King Charles's Apples," 202 

 Kymograph, 50 



Labia minor, 62 



Labium, or second maxillse, 42 



Labrum, 41 



Lac, 334 



Lace-wing flies, 13, 74, 76, 178 



Lacinia, 41 



Ladybirds, 11, 79, 144, 145, 178, 179, 330 



Lcsmopsylla, 329 



Lake pigment produced by insects, 334 



Lampyrida', 80 



Lampyris, 80, 253 



Lang, W. H., 230 



Lankester, Sir E. Ray, 31, 33, 37, 46, 



196, 230_, 318 

 Lantern-flies, 71 

 Larvse, campodeiform, 26 



— development of, 15 



— eruciform, 26 



— form determined by feeding habits, 

 27 



— legs of, 56 

 Lasiocarapid<r, 88 

 Lasioderma, 322 



