ILLUSTRATIONS xv 



209. Frit-fly 190 



210. The Wheat-head Army Worm '. 191 



211. Diseased Chinch Bug 192 



212. A Grasshopper Ovipositing 193 



213. Details of Construction of Hopperdozer 194 



214. Spraying for Grasshoppers 195 



215. Alfalfa-seed Chalcis My 197 



216. A Blister Beetle 199 



217. The Corn Leaf-aphis 202 



218. The Sugar-cane Beetle 203 



219. The Western Corn-root Worm 204 



220. The Erratic Army Worm 205 



221. Wire Worm and "Click Beetle" 206 



222. Wire Worms 207 



223. Two Different Species of Corn Bill Bugs -. 209 



224. Details of Injury to Corn Plant by Bill Bugs 210 



225. May Beetle or "June Bug" 211 



226. Eggs of May Beetle 212 



227. The Onion Maggot 213 



228. Tritoxa flexa 213 



229. Hop-plant Louse 214 



230. The Rice Water-weevil 216 



231. TheSo-called "Suck Fly" 219 



232. Cotton Boll-weevil 222 



233. Cotton Plant in Advanced Stage of Infestation by Hod Spider 223 



234. A Severe Example of Red-spider Work in Cotton Field 224 



235. Portable Barrel Pump for Spraying Weeds 224 



236. The Colorado Potato Beetle 227 



237. External View of Potato, Showing Work of Potato- tuber Moth.. . . 228 



238. Work of Potato-tuber Moth 228 



239. Stages of the Imported Cabbage Butterfly 230 



240. Cabbage Maggot 231 



241. Cabbage Maggot Fly, Female (Enlarged) 232 



242. Work of Cabbage Maggot 233 



243. Tarred Paper Disks Applied to Plants 234 



244. The Harlequin Cabbage Bug 236 



245. The Striped Flea-beetle 236 



246. The Striped Cucumber Beetle 237 



247. Melon Leaves Curled by Attack of Lice 239 



248. The Cucumber Flea-beetle 240 



249. The Twelve-spotted Diabrotica, Different Stages 241 



250. Squash Bug 242 



251. The Bean Maggot Fly 243 



252. Bean Weevil and Pea Weevil 244 



253. The Asparagus Beetle 246 



254. The Destructive Mealy Bug 252 



255. The Mealy Bug with Long Threads, Male 253 



256. The Mealy Bug with Long Threads, Female 253 



257. White Scale 254 



258. Common Black Ant 256 



259. Tip of Golden Glow Plant, Wilting as Result of Attack of Stalk Borer 257 



260. Moth of one of the Stalk Borers 258 



261. Box-elder Bug 261 



262. Insect-made Galls on Box Elder 262 



263. Imperfect Galls on Leaves of Maple 263 



264. Fly Raised from Galls on Maple 263 



