394 



INDEX 



Drai^on-llies, 32S 

 Dra'gon-tly larvje, 385 



Escape from larval skin, 



340 

 Dyschirius, 379 

 Dytiscus, 39, 89, 384 



Eggs of Aquatic Insects, 



146, 326. 360 

 Ephemera, De Geer on, 318 

 Eohemeridre, 285 

 Pictet on, 322 

 Vayssiere on, 325 

 Equilibrium of Aquatic Insects, 



15 

 Eristalis, 198, 383 



Flies, Aquatic, 97 



Ganin on Development of 



polynema, 222 

 Gerris, 349, 382 

 Gnat, 97, 145 

 Great Water-beetle, 61 

 Gyrinus, 30 



H.EMONiA, 93 

 Halobates, 380 

 Halobatodes, 380 

 Helophorus, 89 

 Hemerobius, 44, 45 

 Hurst on Gnat pupa, 104, 144 

 Hydrobius, 87 

 Hydrocampa, 227 

 Hydrometra, 349 

 Hydrophilus, 61 

 Hymenoptera, Aquatic, 219 



Imaginai. Folds, 135 



Insects, Dominance of, 8 

 in Brine, 2, 372 

 of the sea-shore, 370 

 originally terrestrial, 4 

 variety of habitat of, 7 



Invasion of the Waters by In- 

 sects,, 3 



Isotoma, 366 



Klapalek on Agriotypus, 

 223 



Laker on Hydrophilus, 86 

 Lepidoptera, Aquatic, 226 

 Libellulidx, 331 

 Live Natural History, 24 

 Lowne on Suckers of Dytiscus, 



55 

 Lubbock on Polynema, 219 



Lyonnet on Hydrophilus, 64 



Life of, 62 



May-Flies, 205 



McLachlan on Caddis-worms, 



257 

 Meinert on perforated mandi- 

 bles, 45 



on Dixa, 159 



on Tanypus, 155 

 Micralymma. 379 

 Micropteryx, 269 

 Miger on Hydrophilus, 73, 84 

 Mochlonyx, 121 

 Mosquito, 109, III 

 Moult of Insects, 134 

 Mtiller, G. W., on Hydrocampa, 



229 

 Muscidae, 139, 197 

 Myrmeleon, 44, 45 



Nefa, 353 



Nepidte, 353 



Nitzsch on Hydrophilus, 75 



Notonecta, 383 



Notonectidte, 355 



Odonata, 328 



Osten Sacken on Oxen-born 



Bees, 215 

 on Eristalis in America, &c., 



218 

 Oxyethira, 379 



F.^DOGENESis, 23 

 Palmen on Perla, 283, 284 

 Palingenia, 285 

 Paraponyx, 124, 231 

 Parthenogenesis, 23 

 Pericoma, 92, 21 8 

 Perla, 279 



Phantom Larva, 114 

 Pictet on Ephemeridae, 322 



