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261 



261 



Fig- 



206 Broad-shouldered Water-strider, Hebrus americanus . Author's original, from life 



207 Broad-shouldered Water-strider, Rhagovelia collaris 



208 Water-strider or Skater, Hydometra lineata . . 



209 Marsh-treader, Limnobates lineata 



210 Aquatic Plant-louse, Rhopaksiphus nymphcete . 



211 Helgramite, larva of the Dobson 



212 Horned Dobson, Ceryalis corinita 



213 Simuliidae. Caddice-May-Stone-Black and BuiFalo-flies 



Author's original, from life 

 ZI4 Larva-of a Dragon-fly, Gomphus exilis . . . 

 Author's original, from life 



215 Nymph of a Dragon-fly, j^»/;;vya»w 



Author's original, from life 



216 Dragon-flies and Damsel-flies, ^chna heros, L. puuhella, G. exilis and A. violacea 262 



Author's original, from life 



21 7 Water-springtail, Podurus aquaticus . . . .■ 264 



Author's original, from life 



218 Long-beaked Mosquitoes, Culex pungens 265 



After Howard 



219 A Malaria Mosquito, Anopheles quadrimaculatus 266 



After Howard 



220 Mosquito-boat and larvas . 266 



After Howard 



221 Larva and Pupa of Culex pungens . .... .... 267 



After Howard 



222 Water-tiger, Larva of the Predaceous Diving-beetle ... 268 



Author's original, from life 



223 Predaceous Diving-beetle, Acilius fraternus 269 



Author's original, from life 



224 Predaceous Diving-beetle, Dydiscus fasciventris 269 



Author's original, from life 



225 Water Scavenger-beetle or Great Water-beetle /^</rfl/iAi/4:.r ^/d^^r 269 



Author's original, from life 



226 Water Scavenger-beetle, Female attached to Egg-pouch and Predaceous larva or 



Spear-mouth 270 



Author's original, from life. Cut reversed in printing 



227 Whirligig-beetle, Gyrinus affinis 271 



Author's original, from life 



228 Whirligig-beetle, Dineutus vittatus . . .... 271 



Author's original, from life 



229 Whirligig-beetle larva, Dineutus vittatus 271 



Author's original, from life 



230 Pond-beetle or Haliplid, Haliplus ruficollis 271 



Author's original, from life 



231 A Smaller Water-beetle, Psephemus lecontii .... 272 



Author's original, from life 



232 Water-moths, phina-moth, Hydrocampa obliteralis; and China-mark, Cataclysta 



fulicalis 272 



Author's original, from life 



233 Aquatic Spider, Argyroneta aquatica. Author's original, from life 273 



234 Water-mite, Hydrachna geographica " " " " . ... 274 



235 Three Aquaria of equal Superficial area but different Surface area 277 



After Bateman 



236 Dredge net for nature study collecting 3^+ 



237 Buckland collecting can . 3^4 



238 Open Aqua-terrarium or Swamp Aquarium 332 



After Zernecke 



239 Metamorphosis of the Toad, Bufo lentiginosis 336 



From Teacher's Leaflets 



375 



