LIST OF ILLUSTRATIONS. 



XIX 



195. Scale - like secretion of 



Aleurodes on leaf of 

 tomato . . . 204 



196. Female scale of A. spidiotus 206 



197. Male scale of Aspidiotus . 206 



198. Female scale of Diaspis . 207 



199. Male scale of Diaspis . 207 



200. Female scale of Chionaspis 



and Mytilaspis . . 207 



201. Male scale of Chionaspis . 207 



202. Pygidium, or anal seg- 



ment, oi Mytilaspis pom- 

 orum, showing dorsal 

 and ventral parts, &c. . 208 



203. Male scales of Chionaspis 



solids .... 209 



204. Female scales of Chion- 



aspis salicis . . 209 



205. Life-history of Chionaspis 



salicis . . . .210 



206. Scales of Aspidiotus on 



leaf of Lapageria . 217 



207. Scale of Aspidiotus on leaf 



of Stephanotis . .217 



208. Scale of Aulacaspis rosai 



on dog-rose . .217 



209. Female scales of Lecanium 



caprece, " brown scale," 



on sycamore . .219 



210. Adult female Lecanium 



after treatment with 

 potash x 20 . . . 220 



211. Typical antennae of female 



Lecanium . . . 220 



212. Male and female scales of 



Pulvinaria . . . 224 



213. Male of Pulvinaria, species 



found on currant . . 224 



214. Male of Lecanium, species 



found on sycamore . 227 



215. Scales of Physokermes 



abietis . . . 228 



216. Depressions on twigs of 



oak caused by Astero- 

 hcanium variolosum . 231 



217. Pseudococcus cm'sonbark 



of hornbeam . . 232 



2 IS. Antenna of Pseudococctis 



aceris .... 233 



2 1 9. Leg of Pseudococcus aceris 233 



220. Rostrum of Pseudococcus 



aceris . . . .233 



221. Cryptococcus facji on beech 235 



222. Apterococcus fraxini . 238 



LEPIDOPTERA (Moths). 



223. Smerinthus populi . . 243 



224. Smerinthus ocellatus . 244 



225. Timber of goat willow in- 



jured by larvae of Tro- 

 chilium bembeciformis . 245 



226. Pupal case of Trochilium 



bembeciformis . . 245 



227. Trochilium bembeciformis 245 

 22S. Oak plank injured by 



larvre of goat moth . 246 



229. Cossus ligniperda . . 246 



230. Larva of Goat Moth . 247 



231. Pupa of Goat Moth . 247 



232. Zeuzera azsculi . . 248 



233. Orgyia antiqua . . 249 



234. Pupa of Puss Moth on 



twig of birch . .251 



235. Dicranura vinida . .251 



236. Pygiera bucephala . . 252 



237. Larva? of Bufi'-tip Moth 



on twig of oak . . 252 



238. Larva of Bordered White 



Moth .... 254 



239. Pupa of Bordered White 



Moth .... 254 



240. Fidonia piniaria (male) . 254 



241. Fidonia piniaria (female) 254 



242. Foliage of lime-tree eaten 



by larvae of Winter Moth 255 



243. Leaf of wych elm eaten by 



larvse of Winter Moth . 255 



244. Foliage of sycamore eaten 



by larvae of Winter Moth 256 



245. Winter Moth : male, fe- 



male, and caterpillar . 256 



246. Trachea piniperda . . 258 



247. Cone of silver fir parti- 



ally eaten by larvas of 

 Dioryctria abietella . 258 



248. Dioryctria abietella . . 259 



249. Foliage of oak destroyed 



by larvae of the Green 

 Tortrix Moth . .261 



250. Foliage of hazel injured 



by larvae of Tortrix 

 ribeana . . . 264 



251. Leading shoot of poplar 



injured by larva of 

 Hedya ocellana . . 265 



252. Shoots of English yew 



injured by larvae of 

 Batodes angustiorana . 266 



