LIST OF ILLUSTRATIONS 



riG. 



74. Diagrammatic section of Flea, to show internal anatomy 



75. l.a.rva. of a. Flea. (CeraiopAyllus), x 20 . 



76. Head and thorax of Ptilex irritans, x 35 

 ^^. Head and thora.x of Xenopsylla ckeopis, x 25 . 



78. Head and thorax of Hoplopsyllus anomalus, x 25 



79. Head and thorax of Ctenocephalus, x 40 



80. Head and thorax of Ceratopkyllus, x 30 



81. Head and thorax of Ctenophthalmus, x 35 



82. Head, thorax, and tibia of Ctenopsylla musculi, x 25 . 



83. Gra\id female of yig%er {Dennatophilus), x 10 



84. Head and fhovavi of Echidnophaga, x 45 



85. Beak and dissociated mouth-parts of a Bed-bug, x 36 



86. Front wing of a Heteropterous Bug, enlarged 



87. Pronotum of European Bed-bug (CzV«^;r /^c^z</(2«z^j), x 12 



88. Vronoinm of tracheal Bed-hxi^ {Cimex rofundaius), x 15 



89. Tip of abdomen of female Bed-bug, x 24 . 



90. Eggs of European Bed-bug (hatched), x 18 . 



91. yiaXe of Cimex rotundatus, ventxa\\\ev/, x 12 



92. A Reduviid Bug of the genus Conorhinus, copied from Chagas 



93. A Bark-bug {Dysodius lunatus), x 3 . 



94. 7ema\e Head-XonseiPediculus capitis), x 18 . 



95. Tip of abdomen of male Head-louse, x 60 . 



96. Crab-louse {Phthirius inguinalis), x 32 



97. Biting-louse {Menopon), from Common Fowl, x 28 . 



98. A parasitic Hymenopteron of the Chalcid family, x 14 



99. A Dung Beetle of the Scarab family 

 100. Full-grown larva of Z^y/zjcz^j Water-beetle 

 loi. Larva of Whirligig Water-beetle ifiyrinus), a good deal 



enlarged ; copied from Miall (after Schiodte) 



102. Dermesfes, x 8 . 



103. B\scmt-vieev'\\ {Anobium paniceum), x 12 



104. Female of a Ptinus beetle, x 5 . 



105. Niptus beetle, showing the elytra fused together, x 4 



106. Triboliuni ferrugineum, ventral view, x 12 . 



107. Colorado Beetle, x 3 . 



108. Calandra Weevil, x 14 . 



109. "Slug" Caterpillar of a Limacodid Moth, enlarged . 

 1 10 Denuded wings of a Pyralid Moth, to show venation, x 



111. lAea\.yfo'Cn {Pyralis farinalis), x 2 . 



112. Wings of a Tineid Moth, denuded and the broad wing-fringe 



merely indicated, x 9 . . 



113. Mouth-parts of a Cockroach, x 9 



114. Head and mouth-parts (x 10) and tarsus (x 20) of 



Hemimerus ...... 



115. A Book-louse, x 30 . 



116. Young larva of a Stone-fly {Perlidcs), x 9 (the anal 



have been cut short) ...... 256 



