394 



INDEX 



Dragon-flies, 328 

 Dragon-fly larvae, 385 



Escape from larval skin, 



340 



Dyschirius, 379 

 Dytiscus, 39, 89, 384 



EGGS OF AQUATIC INSECTS, 



146, 326, 360 



Ephemera, De Geer on, 318 

 Ephemeridas, 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 



IMAGINAL 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, 

 22; 



LAKER ON HYDROPHILUS, 86 

 Lepidoptera, Aquatic, 226 

 Libellulidce, 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, in 



Moult of Insects, 134 



Miiller, G. \V., on Hydrocampa, 

 229 



Muscidre, 139, 197 



Myrmeleon, 44, 45 



NEFA, 353 



Nepidse, 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 



P^EDOGENESIS, 23 



Palmen on Perla, 283, 284 

 Palingenia, 285 

 Paraponyx, 124, 231 

 Parthenogenesis, 23 

 Peri coma, 92, 218 

 Perla, 279 



Phantom Larva, 114 

 Pictet on Ephemeridse, 322 



