ILLUSTRATIONS. 



203 

 204 



208 

 210 



215 

 216 

 218 

 219 

 219 

 221 

 224 

 226 

 227 



97. Bibionidfe 



98. A Sand-fly {Simulium rcptans) 



99. Crane-fly (Tipvla oleracea) 205 



100. Winter Gnats {Trichocera) . ^07 



101. Head and Proboscis of Tabanus autumnalis 208 



102. Ox Gad-fly (Tahanus hovinus) 



103. Hover-flies (Syrphidce) 



104. Ox-warble {Ilypoderma hovis) 211 



105. Ox-bot . . 212 



106. Horse-bot Fly (Gastrophilus equi) 214 



107. Larva of Horse-bot Fly 



108. Onion Fly (Phorhia cepetorum) 



109. Root-eating Flies 



110. Wheat-bulb Fly . 



111. Mangold Fly (Clwrtophila hctce) 



112. Gout Fly (Chlorops tosniopius) 



113. Carrot Fly (Psila rosce) 



114. Celery Fly {Tephritis onopordinis) 



115. Head of Stomoxys 



116. Sheep-tick (Mdophagus ovinus) . 229 



117. Larva and Pupa of Hen-flea {Pulex avium) , 232 



118. Tlirips . 233 



119. Proboscis of a Hemipteron 235 



120. Hop damaged by Hemiptera-heteroptera . 235 



121. Cherry Aphis (Myzus cerasi) , , , 237 



122. V\u.m X\ih\?i [Aphis pruni) 241 



123. Female San Jos^ scale 242 



124. Male San Jos^ and Mussel scale . . 243 



125. Apple-sucker (Psylla mail) 245 



126. Needle-nosed Hop-bug (CaZococJs/uZiWjMcu&iius) . . 248 



127. Louse of the Ox {Hcematopinus curystcrnus) . 250 



128. Migratory Locust {Jidipoda migratoria) 251 



129. Female and Male common Cockroach {Blatta oriejitalis) 253 



130. Mole Cricket {Gryllotalpa vulgaris) 254 



131. Trichodcctcs spharocephalus of Sheep . 256 



132. Mallophaga or Bird-lice . . 256 



133. Lace-wing Fly 257 



134. Dragon-flies {^Sschna grandis) , 259 



