XIV 



ILLUSTKATIONS. 



97. Bibionidse .... 



98. A Sand-fly (Smmlium rcptwns) . 



99. Crane-fly (Tipvla oleracea) 



100. Winter Gnats {Trichocera) 



101. Head and Proboscis of Tabanus autmnmaXis 



102. Ox Gad-fly (^Tabanus hovmus) . 



103. Hover-flies (Syrphidw) . 



104. Ox-warble (Hypoderma hernia) 



105. Ox-bot ..... 



106. Horse-bot Fly (Gastrophilus equi) 



107. Larva of Horse-bot Fly . 



108. Onion Fly (Pliorbia cepetorum) . 



109. Root-eating Flies 



110. Wheat-bulb Fly . 



111. Mangold Fly {Chortophila betce) . 



112. Gout Fly {OfiZorops tceniopus) 



113. Carrot Fly {Psila rosce) . 



114. Celery Fly {Tephritis onopordinis) 



115. Head of Stomoxys 



116. Sheep-tick (Melophagus ovmus) . 



117. Larva and Pupa of Hen-flea (Pvlex avium) 



118. Thrips ..... 



119. Proboscis of a Hemipteron 



120. Hop damaged by Hemiptera-heteroptera 



121. Cherry Aphis (Myzus cerasi) 



122. Plum Aphis {Aphis prwni) , 



123. Female San Jos^ scale . 



124. Male San Jos^ and Mussel scale . 



125. Apple-sucker (Psylla mali) 



126. Needle-nosed Hop-bug (Calocoris fvlvomacvlabus) 



127. Louse of the Ox (Hcsmatopim/us ev/rysternu») 



128. Migratory Locust {JEdipoda migratona) 



129. Female and Male common Cockroach {Blatta orientaUs) 



130. Mole Cricket {Oryllotalpa wlgwris) 



131. Trichodectes sphwrocephalus of Sheep 



132. Mallophaga or Bird-lice . 



133. Lace-wing Fly . 



134. Dragon-flies {JSschna grandis) , 



