Contents 



CHAPTER IV 



PAGE 



The Orders of Insects .... i6o 



Discussion and Summary of the Orders, 160-165 ; 

 Collembola (Spring-tails), 165-168; Thysanura (Bristle- 

 tails), 168-170; Dermaptera (Earwigs), 170-172; Orthop- 

 tera (Cockroaches, Grasshoppers, etc.), 172-176; Platyp- 

 tera (Bird-lice, Termites, Stoneflies, etc.), 176-183 ; 

 Thysanoptera (Thrips), 183-184; Hemiptera (Bugs, Lice, 

 Cicads, Plantlice, etc.), 184-197; Plectoptera (Mayflies), 

 197-199; Odonata (Dragonflies), 199-202; Neuroptera 

 (Antlions, Lacewing-flies, etc.), 202-205 ; Coleoptera 

 (Beetles), 206-225; Trichoptera (Caddis-flies), 225-227; 

 Lepidoptera (Moths and Butterflies), 227-250 ; Diptera 

 (Two-winged Flies), 250-268 ; Hymenoptera (Saw-flies, 

 Gall-flies, Ichneumon-flies, etc.. Ants, Wasps, Bees), 268- 

 280. 



CHAPTER V 



Insects and their Surroundings . . . ; 



Abundance of Insect-life, 281-285; Insects creatures ot 

 the Land and the Air, 285-286; Cave Insects, 286-288; 

 Fresh-water Insects, 288-294; Marine Insects, 294-296; 

 Geographical Distribution, 296-299 ; Vegetable-feeders, 

 299-304; Scavengers, 304-305 ; Insects of Prey, 305-307 ; 

 Parasites, 307-310 ; Inquilinesand Abnormal Feeders, 310- 

 311 ; Protection by Foreign Objects and Secretions, 311- 

 315; Protective Resemblance, 315-320; Warning Colour, 

 320, 321; Mimicry, 321-324; Sexual Modifications, 324- 

 328 ; Family and Social Life, 328-340 ; Insects in relation 

 to Man, 340-343. 



