344 



INDEX AND GLOSSARY 



Warning colors, 214, 216. 



Wasps, 85-88 ; friends of horti- 

 culturists, 132; solitary, 291; 

 social, 291; thread-waisted, 

 291. 



Water scavenger beetle, 189, 

 289. 



Water-striders, 292. 



Water-boatmen, 293. 



Water scorpions, 293. 



Wheat, insect enemies of, 330. 



Whirligig beetles, 289. 



" Wigglers," 154. 



Weevils, 290. 



Williston, S. W., quotation 



from, 66. 

 Worker bee, 77-79. 



White ants, 169, 172, 286, 287, 

 330. 



Wire worms, 331. 

 Wood-boring beetle, 190. 



Yellow-jackets, 85, 8'6. 

 Yucca lily, fertilization of, 112- 

 118. 



Zonal map of United States, 

 210. 



Zones of life, 208. 



