INDEX 



[Illustrative figures will be found on the pages indicated in italics.} 



ABDOMEN, 18 



of aphid, 74 



of bristle-tail, 168, 170 



ot caddis larva, 122 



of caterpillar, 58-9 



of dragon-fly, 41 



of Dyticus larva, 102 



of grasshopper, 18 



of ground -beetle larva, 100, 101 



of mayfly, 92 



of spring-tail, 171 



of Termitoxeniidae 166 



of Thrips, 84 

 Abdominal limbs, 95, 170, 253. 



See also " Proleg, abdominal" 

 Abraxas, 233 

 Acanthosoma, 236 

 Achorutes, 172 

 Adephaga, 102 

 Agriotes, 108, 109 

 Air-tubes, 19 



of dragon-fly, 42, 47 



of grasshopper, 19, 21 



relation to wing-nervures, 17, 68, 



154. See also " Respiratory 



System " 



Alder-fly See "Sialis," 

 Aleyrodidae, 86-8, 258 

 Ambrosia beetles, 236 

 Ametabolous insects, 66 

 Amnion, 31, 32 



of dragon-fly, 44 



of locust, 34, 

 Anapterygota 256 

 Anastatus, 226-7 

 Anopheles larva, 198, 199 



pupa, 198, 200 



Anoplura, 155-6, 159, 180, 256 

 Ant, social life, 240-3 



larva, 241-3 



pupa, 242 



Antenna. See" Feeler" 

 Ant-lion, 121 

 Apanteles, 224-5 

 Aphaniptera, 161, 186, 256 

 Aphididae, 70-7, 72-3, 266 



apple-tree species, 207-8 



18 



Aphididae communities, 235-6 

 parthenogenesis, 30, 71-2 

 young, 74-6 



Apis. See " Bee " 



Apocrita, 187, 270 



Apple, insects of, 204-8 



Apterococcus, 91 



Apterygota, 168-73, 176-7, 261 



Aquatic insects, 42-52, 93-7, 121-3, 

 189-203, 265 



Arachnida, 175, 247 



Archepsychops,{267 



Archotermopsis, 81, 83 



Arctia, 232 



Arthropoda, 5, 8, 174-5, 246 



Athous, 109 



Atropos, 158 



BARK-BEETLE. See " Scolytidae " 

 Bed-bug. See " Cimicidae " 

 Bee, bumble-, 238, 239 



honey-, 726, 238, 239 



leaf-cutter, 237 



mason, 237 



parental care, 237-8 



social life, 238-40 



solitary, 238 

 Beetle larvae, 98-116. 



See also " Coleoptera " 

 Belmontia, 267, 268 

 Belostomidae, 266 

 Bembex, 228 

 Bibio, larva, 127-8 

 Biting-louse, 157-8 



See also " Mallophaga " 

 Black-fly. See "Bibio" 

 Blastodacna, 205 

 Blastoderm, 31, 145 

 Blatta, 70, 71 

 Blennocampa, 231 

 Blepharipa, 221-3, 22 5 

 Blood system, 20 



changes during pupation, 148 

 "Blood-worm." See " Chironomus " 

 Blow-fly. See "Calliphora" 

 Blue-bottle. See " Calliphora " 

 Book-louse. See " Corrodentia " 



273 



