xvi CONTENTS. 



Page 



2, Insects which attend their young ivhen hatched - . . 237 — 321 



Mason Wasp - . . . . 238 



Saw Fly - - - - - - 238 



Wood-boring Beetle - - - . _ 238 



Field Bug ------ 238 



Earwigs - - . - - - - 239 



Spiders --.-.. 239 



Ants ------ 241 



Wasps --_.-. 245 



Bees -.-... 247 



Humble Bees - - - - - 248 



Termites -.--.. 249 



LETTER XII. 



Food op Insects ------ 251 — 261 



Insects which feed on vegetables - - - - 251 



animals . _ . _ 252 



both vegetables and animals - - 253 



Time of feeding - . . - . 256 



Instruments of nutrition ----- 257 



Proportion of food consumed - - - . 258 



Power of abstinence ----.. 259 



LETTER XIII. 



Food of Insects — ■continued - - . - . 262 — 279 



Stratagems emfloyed in procuring it - - - - 262 — 279 



Threads of Spiders ----- 262 



Webs of House Spiders, &c. - - . . 265 



Nets of Geometric Spiders - . - - 266 



Renewal of Geometric nets - - - . 272 



Other Spiders' webs ----- 273 



Spiders which do not form webs or nets - - - 274 



Diving Spider - - . - _ 275 



Ant Lion - - - . - _ 276 



Lrptis Vermileo - . - . . 279 



LETTER XIV. 



Habitations of Insects ----- 280 — 303 



1. Of solitary insects forming them for their young - -280 — 292 



Clothier Bees _ - - - _ 282 



Carpenter Bees - . - . . 282 



Mason Bees - - - - - 283 



Upholsterer Bees - - - ' - - 285 



Leaf-cutting Bees ----- 285 



Mason Wasp ----- 287 



Leaf-rolling Weevils ----- 288 



Gall Flies ------ 289 



2. Of solitary insects forming thc7nfor their oicn use - - 292 — 303 



In tbe interior of leaves - . - - 293 



Of leaves cut off and rolled up - - - - 293 



Silk ------ 295 



Lichen, Stone, &;c. - . - - 296 



Grass, Bark, &c. {Psyche) - - - - 297 



Gummy cement ( Clythra) - - - - 297 



Wax ( Gallcria) ----- 298 



Wool or Hair (Caterpillars of Clothes moths) - - 298 



Cotton - - - - - - . 299 



