Amnion, 166. Ancestral forms, 151. Andrena, 31, 45, 192. Angle worms, 189. Annelida, 161, 170. Anopheles, 189. Ant, 217. Antenna, origin of, 174. Antherophagus, 49. Ant lion, 115, 182. Ants, 189. Anura, 136, 145, 147. Anurida, 146. Apathus, 47. Aphis, 151, 203. Aphis eater, 75. Aphis of grain, 209. Apple borer, 208. Apple insects, 83. Apple tree borer, 187. April, insects of, 187. Agonum, 191. Aquarium, 195. Arachnida, ancestry of, 189. Archetype, 186. Archetypes in Insects, 150. Arctia, 197. Argas, 123. Argynnis, 193, 197. Army worm, 55. Arrhenodes, 206. Arthropoda, 166. Aspidiotus, 203. Assmus, Edward, on parasites of honey bee, 39. Astoma, 122, 159. August, insects of, 209. Band, primitive, 163, 167. Bark borer, 188, 216. Bark louse, 203. Barnacle, 155. Bed bug, 96, 183. Bees, 17, 168, 206. Bee louse, 41. Beneficial insects, 190. Billings on Eophyton, 158. Bird tick, 84. Black fly, 73. Blight insect, 203. Bombardier beetle, 191. Borer, 187. Bot fly, 77. Botrytis, 47. Brachinus, 191. Brauer, F., on ancestry of insects, 157. On two larval forms, 175. Braula, 41. Breeze fly, 74. Brephos, 189. Bristle tail, 127. Bruchus, 188. Buprestis, 206. Cabbage butterfly, 55, 207. Caddis fly, 153. Caddis fly larva, 178. Caddis worm, 195. Calendar, Insect, 187. Caloptenus, 211. Calosoma, 190. Campodea, 133, 159, 170, 178. Campodea-stage of insects, 157. Canker worm, 187, 201. Carabidae, 189, 190. Carabus, 191. Carboniferous insects, 158. Myriopods, 158. Scorpion, 158. Carpenter bee, 192. Carpet fly, 75. Case worms, 195. Casnonia, 191. Caterpillar, origin of, 175, 179. Cecidomyia, 168, 196, 203. Cecidomyia tritici, 197. Centipede, 149. Ceratina, 24, 192. Ceresa, 209. Cestodes, 162. Cheese maggot, 83. Cheese mite, 124. Cheyletus, 119. Chigoe, 86. Chinch bug, 55, 203. Chionea, 85. Chironomus, 168, 189. Chloeon, 170, 180. Chrysobothris, 206. Chrysopa, 171, 182, 208. Chrysophanus, 193, 207. Cicada, 212. Cicindela, 189. Clothes moth, 64, 188. Coccinella, 204. Coddling moth, 188. Coleopterous larvae, 175. Collembola, 133, 159. Comprehensive type, 154. Compsidea, 90. Conotrachelus, 194. Copepoda, 167. Corydalus, mandibles of, 182. Crab, 155, 156. Crustacea, differences of from insects, 157. Currant borer, 204. Currant worm, 202. Cut worm, 197. Cyclops-like stage, 162. Cynips, 193. Daddy-long-legs, 194. Dawson's discovery of fossil myriopods, 159. Dawson on fossil land plants of Upper Silurian, 158. Degeeria, 143. Demodex, 125, 148, 160. Devil's darning-needle, 106. Devonian formation, insects in, 158. Diabrotica, 194. Dicerca, 206. Dicyrtoma, 142. Diplax, 113, 154.