INDEX 



Sinuate pear borer, 254 

 Skin of insects, 16 

 Smell, sense of, 13 

 Smilia misella, 106 

 Snout -beetle injury, 67 

 Soaps as insecticides, 278 

 Soldier beetles, 108 

 Soluble oils, 288 

 Squash borer, 72, 302 

 Structure of insects, 9 

 Stable flies, 171 

 Staphylinidae, 187 



habits of, 102 



Stegomyia and yellow fever, 

 206 



habits, 210 

 Stem borers, 265 

 Stone flies, 87 

 Stylops, habits of, 96 

 Sulphur as an insecticide, 285 



soap, 285 

 Syrphids vs. plant lice, 1 1 1 



Tabanidae, no, 169 

 Tachinid flies^as parasites, 113 

 Tactile structures, 14 

 Taste, sense of, 13 

 Temperature, effect of, 140 

 Termites in house, 222 

 Thalessa, habits of, 121 

 Thripids and dry weather, 142 

 Thysanura, 17 



feeding habits, 40 

 Thysanurids in house, 219 

 Time of planting, 301 

 Tobacco, 277 

 Tracheae, 10 



Transformations, 15 



Trap crops, 302 



Tree -hoppers, injury by, 52 



protectors, 298 

 Trichoptera, habits, 91 

 Tsetse flies, 207 

 Tumble-bugs, 189 

 Typhoid fever and flies, 200 



Vedalia cardinal! s, 105, 253 

 Vertebrate enemies of insects, 

 130 



Walking sticks, 53 

 War on insects, 271 

 Warbles, 180 

 Warning colors, 132 

 Wasps, predatory, 115 



social, 118 



solitary* 115 

 Weather vs. insects, 138 

 Whale-oil soap, 279 

 Wheel-bug, 94 

 White ants in house, 222 



fly in California, 141 



grubs, 63 

 Winter, effect of on insects, 



M3 



Wire -worms, 59 

 Wood-boring beetles, 60 



-leopard moth, 73 

 Woolly apple louse, 257 



Yellow fever and mosquitoes, 



206 

 Yucca pollination, 23 



