311 



Gnats, 260 



House, 263 



King-footed, 263 



Wood, 263 

 Gobio fluviatilia, 120 

 Golden Apple Beetles, 226 



Carp, 111 



Orfe, 134 



" Pippins," 164 



SoMei, 128 



Tench, 128 

 Gold-fish, 111 

 Gordius aquations, 281 

 Gravel for aquaria, 32, 43 

 Great Water-Newt, 98 



Water-Plantain, 81 

 Green Hydra, 297 

 Grooves in slate for tank, cutting, 



15 

 Gryates nigricans, 140 

 Gudgeon, the, 120 

 Gyrinidse, 200, 215 

 Gyrinus, 215 



bicolor, 118 



natator, 217 



H. 



Hsemonia, 226 

 Hsemopsia sanguisuga, 280 

 Hair Worm, 281 

 Haliplides, 202, 213, 214 

 Haliplus, 213 



lineatocollis, 214 



rufioollis, 213 

 " Harmless Water-beetle, 218 

 Helophorus grandia, 222 

 Heteromera, 198 

 Heteroptera, 228 

 Hippurua vulgaris, 67 

 Hirudo medicinalis, 279 

 Hogg, Dr., quoted, 298 

 Hoop-iron, cutting grooveain slate 



with, 16 

 Hornwort, Common, 76 

 Horae Leech, 280 



" Stinger," 247, 248 

 Hottonia palustris, 80 

 "Hot-water" Gold-fish, 112 



House Gnat, 263 

 Hydaticus, 202, 210 



transversalis, 211 

 Hydra, Brown, 297 



fusca, 297 



Green, 297 



Orange-brown, 297 



viridia, 297 



vulgaris, 297 

 Hydrachna, 275 



globulus, 205 

 Hydrachnidae, 275 

 Hydradephaga, LOO, 215 

 Hydra, 297 

 Hydraena, 224 



riparia, 224 

 Hydrobius fusoipes, 222 

 Hydrocampa stagnalia, 260 

 Hydrocampidae, 260 

 Hydrocharidese, 59 

 Hydrooharis moraus-ranse, 59, 63 

 Hydroohus, 224 



angustatus, 224 

 Hydrocoriase, 228, 232 

 Hydrometra, 229 



stagnorum, 229 

 Hydrometridse, 229 

 HydrophilidaBi 198, 218, 225 

 Hydrophilus, 218 



piceus, 218 

 Hydroporides, 202, 214, 215 

 Hydroporus, 214 



palustris, 215 



rivalis, 215 



12-pu3tulatus, 214 

 Hydrous, 221 



caraboides, 221 

 Hyphydrua, 214 



ovatus, 214 



Ilybius, 202, 210 



ater, 210 



fuliginosua, 210 

 Implements for collecting, 34 

 Inaect aquarium, 18, 27, 30 

 Italian Water- weed, 59 

 Ivy-leaved Crowfoot, 72 



