INDEX 
An asterisk * denotes an illustration. 
Abdomen, 65; appendages of, *67, 
*r50, *152; extremity, 68; modifica- 
tions, 66; segments, 65 
Acacia, *272, 273 
Accessory glands, *140, *141, *142 
Achorutes, *9, 10 
Acquired characters, 243 
Acridiide, *1o, 11; moults of, 
spiracles, 66 
Acridium, 27; respiratory muscles of, 
S139 
Aculeata, 21 
Adams, on dispersal, 383 
Adaptations, of larve, 165; of legs, 51, 
*53; of mandibles, 37, *38; origin 
of, 237; protective, 297 
Adaptive coloration, 216; classifica- 
tion, 234; evolution, 236; variation, 
241 
Adelung, von, 428 
Adler, 418, 454 
Adventitious resemblance, 219 
Ageronia, 104 
Aggressive resemblance, 235 
Agrionide, caudal gills of, * 
Air-sacs, 133 
Alary muscles, *125 
Albinism, 201 
Alexander, 450 
Alimentary tract (see Digestive Sys- 
tem). 
Alluring coloration, 235 
Alternation of generations, 256 
Amans, 417, 445 
Amber insects, 385, 389 
Ametabola, 159 
Ammophila, *360, 363 
Amnion, *148, 149. *153 
Amphidasis, 199 
Amphimixis, 243 
Amphipyra, 347 
Ampullaceum, *95, 96 
Anajapyx, *6, 22 
Anal glands, 81, *117 
Anasa, *158 
Androconia, *79, 80 
Anemotropism, 347 
Anergates, 336 
Angrecum, 262 
1653 
134 
Anisota, ™171 
Anisotropic, 87 
Annelids, in relation 
Sen 
Anomma, 335 
Anopheles, 302, 303 
Anophthalmus, 114 
Anosia berenice, 380; plexippus, an- 
tenna of, *34; dispersal, 369; eclo- 
sion, 172; so-called mandibles, 41; 
to arthropods, 
mimicked, *224, 232; pupa, *168; 
pupation, 168; scale, *77; wing, 
*60 
Antecoxal piece, *40 
Antenne, forms of, *34; functions of, 
34; sexual differences in, *35 
Antennal comb, *270, 271 ; neuromere, 
*46; segment, 45; sensilla, 94, *95 
Anthonomus, 397 
Anthrax, 306 
Anthrenus, *77 
Antigeny, 35, 2 
Ant-plants, *272 
Ants, castes of, 330; color sense, 114; 
facets, 32; general account, 330; 
habits, 333; harvesting ants, 340; 
honey ants, 336, *337; hunting ants, 
335; larve, 331; leaf-cutting, 337, 
*338 ; nests, 331 ; slave-making, 336 
Anurida, development of mouth parts, 
*151 ; germ band, *150; habits, 191; 
pigment, 197 
Anus, *72, 121 
AOrLta. sles sear e6 
Apanteles, 310, *311 
Apatetic colors, 234 
Apatura, scales, 193; colors, 195 
Aphaniptera, 19, *21 
Aphidius, 310 
Aphids, galls of, *255; in relation to 
ants, 341 
Apis mellifera, antennal sensilla, *95 ; 
cephalic glands, 122; comb, *322; 
control of sex, 327; determination 
of caste, 327; foot, *54; general 
account, 321; hair, *269; larve, 
*324; legs, *270; mandible, *38; 
mimicry, 225; modifications in rela- 
tion to flowers, *270, 271; moults, 
467 
