296 



INDEX. 



Order III., Odonata, 73. 

 IV., Plecoptera, 90. 

 v., Platyptera, 92. 

 VI., Dermaptera, 100. 

 VII., Orthoptera, 102. 

 VIII., Thysanoptera, 113. 

 IX., Hemiptera, 115. 

 X., Coleoptera, 145. 

 XI., Neuroptera, 170. 

 XII., Mecoptera, 176. 

 XIII., Trichoptera, 178. 

 XIV., Lepidoptera, 185. 

 XV., Hymenoptera, 223. 

 XVI., Diptera, 248. 

 Origin of structures, 225. 



wings, 41, 56, 57. [See Wings.] 



Orthoptera, 29, 30, 62, 68, 102, iio- 



112, 142. 

 Orthorhapha, 257. 

 Osage-Orange, 138. 

 Ova, 136, 137. [See Eggs.] 



protection of, iii. 



Ovary, 37. 

 Oviduct, 37, 273. 



Ovipositor, 107, 109, 164, 231, 232, 

 236, 237, 251, 259. [See Descrip- 

 tions of types and Sting.] 



P. 



Packard, 22, 23, 38, 39, 46, 48-50, 52, 

 54, 56, 57, 59, 61, 62, 80, 82, 94, lOI, 

 114, 129, 138, 142, 143, 175, 183, 

 225, 244, 254, 281, 282. 



Paleacrita yernata, 205. 



Palmen, 250. 



Palpi, 109, 158, 260. [See Descrip- 

 tions of types.] 



functions of, 25. 



Panorpa, 176, 177. 



Panorpidse, 176. 



Papilio, 214. 



(Ageronia) feronia, 190. 



ajax, 216. 



Papilionidae, 212, 214, 216. 



Papillae, 24. 



Paraglossse, 226. 



Parallel forms, 141, 175. 



series, 62. 



Parasites, 52, 53, 98, 99, 126, 128- 

 130, 157, 161, 168, 169, 233, 256, 

 267, 271, 272, 279, 283, 285, 286, 

 288. 



position of, 52, 99. 



Parasitica, 128. 



Parasitic Coleoptera, 157. 



Parthenogenesis, 136. 



Patagia, 187. [See Shoulder lappets.] 



Patten, 20. 



Pauropus, 48. 



Pear-slug, 231. 



Pediculidse, 129. 



Pediculina, 129. 



Pediculus capitis, 129. 



vestimenti, 129. 



Pedunculated abdomen, 17, 238, 250. 



[See Abdomen.] 

 Pentatomidae, 126. 

 Periplaneta orientalis, 102. 

 1 Perlidse, 51, 90. 

 Pezotettix, 45. 

 Phalaenidse, 203, 205. 

 Pharjmgeal sac, 189. 

 Pharynx, 261. 

 Phasmidse, 105, in. 

 Philadelphia, 207. 

 Phosphorescence, 152. 

 Photuris Pennsylvanica, 151. 

 Phryganeidae, 178, 179. 

 Phyllocnistis, 183, 202. 

 Phylloxera, 138. 

 Phylogeny of insects, 104. 

 Physical causes, 226. 



conditions, 88. 



surroundings, 218. 



Physopoda, 113. 

 Pieris, 22. 



oleracea, 215. 



rapae, 186, 214, 237. 



Pine-cone galls, 263. 

 Plan adopted in Guide, 13. 

 Plant-lice, 136, 285. [See Aphides.] 



Plate I., 



II., 



III., 



Figs. 

 Figs. 



[3, 15-20, 22-26, — 38. 



Figs. 29-32, 34, 35, 37-41 

 73- 



IV., Figs. 52-60, — 102. 



v.. Figs. 63-67,-115. 



VI., Figs. 84-90, — 145. 



VII., Figs. 97-113, — 158' 



VIII., Fig. 119, — 170. 



IX., Figs. 134-140,142-148, — 186. 



X., Figs. 176-181, — 224. 

 XI., Figs. 186-192,-238. 

 XII., Figs. 196-205,-248. 

 XIII., Figs. 207-213, — 260. 

 Plateau, 21-23, 25, 26, 40, 102. 

 Platyptera, 68, 91-93, 98. 

 Platysamia Cecropia, 208. 

 Plecoptera, 70, 90. 

 Plectoptera, 70. 

 Plectrocnemia, 181. 

 Podical plates, 18. 

 Podisus spinosus, 126. 



