INDEX 



abdomen, 3, 26, 29; Figs. 14-16 



acalyptrate fly. Fig. 54 



acquired characteristics, inheritance of, 



no 

 Aculeata, 22 

 adaptation, no 

 adult insect, emergence of, 7 

 air-bubble, in aquatic insects, 39^ Figs. 



19, 21 

 alderflies, 16 



alimentary canal, 30; Fig. 16 

 anatomy, 26 

 Anisoptera, 13 

 Annelida, 3 

 Anoplura, 15 



antennae, 3, 26j Figs. 14-16 

 ant-hills, 14, 97 

 anticoagulin in saliva, 127 

 ant-lions, 16; Fig. 26 



larvae of, 94 

 ants, 21, 22, 104 



social life of, 104 - 

 'ants, white', 14 

 aphids, 16, 92; Figs. 13, 20 



as pests, 120, 122 

 Apis mellifera, 103 

 Apocrita, 21, 22 

 apodeme, 72 



apodous larvae, 56 j Fig. 33 

 appendages, i 

 Apterygota, 4, 9 

 aquatic insects 25, 39, 76, 115 

 Arachnida, 3 

 Arachnocampa luminosa, 95; Figs. 75, 



76 

 Anxenia, 12 

 Arthropoda, i 

 Ascalaphidae, Fig. 18 

 Asilidae, in; Figs. 50, 72 

 asparagus-beetles. Figs. 67, 68 

 Atherix ibis, clusters of, 95 



back-swimmers, 16, 76, 115 

 Bald-Faced Hornets, 100 

 barklice, 141 Fig. 6 

 Batesian mimicry, 116 



bats, 



earwigs parasitic on, 12 

 flies parasitic on, 20 

 Bed Bug, 15, 128 

 bee-fly; Fig. 47 

 bees, 21, 22; Figs. 256, 61 



habits of, 10 1 



swarms of, 89 

 beetles, 25; Frontispiece; Figs. 25, 17b, 

 d, 64-68 



flight of, 81 

 Belostomatidae, 115 

 beneficial insects, 130 

 biological control, 120, 122 

 Bird Lice, 15 

 bites, effect of, 127 

 'black-beetles', 10 

 blood, of insects, 34 

 blood-gills, 41 

 bloodsucking flies, 21 

 bloodsucking insects, 46, 127 

 blood-system, 30 

 bloodworms, 41 

 bluebottles, 7, 20; Fig. 52 

 boll- weevil of cotton, 122 

 boll- worm of cotton, 122 

 Bombyliidae, Fig. 47 

 booklice, 14 

 bot-flies, 128 

 Brachycera, 20 

 breathing, 34 



tubes, 38; Fig. 17 

 bristle-tails, 9 

 Bug, Bed, 15 

 bugs, 15 



bumblebees, 100, nesting habits, 103 

 butterflies, 19; Fig. 71 



caddisflies, 19 

 Campodea, 9 



campodeiform larvae, 9, 55; Figs. 33, 65 

 carpenter-bees, 117 

 cases of caddisfly larvae, 19 

 castes of social insects, 14, 97 

 caterpillars, 20, 56, 119; Figs. 33, 39 

 crawling of, 73; Fig. 48 



133 



