283 



ITonagria. 164, 165, 166. 

 ■Notonecta, 156. 

 NymphfiBa, 152. 

 Nymphesella, 166. 



dispar, 167. 



maculalis, 167. 



Odonata, 163. 

 CEdogonium, 152. 



Odontomyia, 157, 247, 248, 250, 253, 

 254, 271. 

 key to itnagos, 255. 



Iarv88, 254. 

 binotata, 255,262. 

 cincta, 250, 253, 254, 255, 256, 



262,264,265,266,271, 280. 

 extremis, 254, 255, 256. 

 hieroglyphica, 256, 266. 

 Intermedia, 255, 256. 

 megacephala, 255, 262. 

 pilimana, 255, 256. 

 plebeja 255, 256. 

 pubescens, 255 256. 

 snowl, 256, 266. 

 vertebrata, 253, 254, 255, 262, 



271, 28J. 

 willistoni, 254, 255, 262. 

 Oligostigma, 174, 175. 

 Operculate univalves, 157. 

 Orthorhapba, 150, 184, 185, 186, 188, 

 267. 

 key to families : laiTBB, 186. 

 pup8B, 183. 



Pachyrhina, 206. 



ferniginea, 210, 216, 217, 218, 

 219. 

 Pangonia, 225, 226. 



rasa, 226. 

 Paraponyx, 165, 166,167, 174,175, 

 177. 

 albalis, 173. 

 allionealis, 173. 

 obscuralis, 167, 173, 278. 

 iplenilinealis, 173. 

 stratiotata, 171, 173. 

 Parasitica, 270. See Hymenoptera, 

 parasitic. 



Pedicia, 196. 

 Perlid, 159. 

 Phalacrocera, 190. 

 Phanurus, 274, 275, 276. 



tabani, 276. 



tabanivorus, 245, 272, 274, 280. 

 Philhydrus, 163. 



Phryganeidee, 162. See case-flies. 

 Plecoptera, 163. 

 Poduta, 156. 

 Polynema natans, 270. 

 PompilidflB, 157,272, 



biguttatus, 272. 



n.sp?, 272. 



philadelphicus, 272. 

 Poplar, 267. 

 Potamogeton, 152, 168. 



nutans, 167,176, 179,270. 

 Proctotrypidee, 271, 274, 275. 

 Psychodidee, 184, 186, 188. 

 PyraUdse, 164, 165,166. 

 Pyra'hausta, 164, 180. 



nelumbialis, 165, 166, 180. 



penitalis, 183. 



Ehipidia, 197. 



Kbyphidee, 187, 189. 



Rushes, 154, 190, 197, 221, 227, 268. 



Sagittaria, 190, 254. 



Sand wasps, 157 273. 



Scirpus, 153. 



SialidsB, 160. 



Sialis, 228. 



Simuliidee, 184, 187, 189. 



Smicra, 157, 250, 253. 



microgaster, 253, 254, 264. 271. 

 lufofemorata, 250, 253, 271. 



Snipe-flies, 188. See Leptidee. 



Soldier-flies, 150, 155, 156, 157, 188. 

 See Strati omyi id 89. 



Sparganophilus eiseni, 157. 



Spiders, 157. 272. 



Spider-wasps, 157. See PomplUdfiB. 



Spring-tails, 156, 161, 163. 



Stone-flies, 163. 



Straight-seamed flies, 150. See Or- 

 thorhapba. 



