List of Illustrations. 9 



PAGE 



FIG. 69. (a) Liponyssus bursa, c5 From below . . .81 



(b) ,, sylviarum, $ . From below . . . 81 



,, 70. Liponyssus bursa, dorsal aspect of protonymph . . 82 



,, 71. Laelaps echidninus, 9. From below . . .83 



,, 72. Raillietia auris, 9. Dorsal aspect. .... 84 

 ,, 73. 9 . Ventral aspect .... 85 



74. ,, (a) Second leg of male, (b) Chelicera 



of male 87 



,, 75. Sternostomum rhynolethrum, 9- Dorsal view . . 89 



,, 76. 9. Ventral view . . 91 



77. Holothyrus sp. From below . . . . . . 9'2 



,, 78. Tracheal tube of honey bee infested with Acarapis woodi 95 

 79. Acarapis woodi, 9 . Dorsal aspect .... 96 



80. 9 . Ventral aspect .... 97 



81. <f. Dorsal aspect .... 98 



,, 82. ,, ,, (a) Larva. (b) The same still enclosed 



in egg-shell . . . . . . .' .99 



,, 83. ,, (a) Fourth leg of female. (b) Egg 



(c) Posterior leg of larva (d) First leg of larva . 100 

 ,, 84. Larva of Tarsonemua, and end of second leg of same . 100 

 85. Tarsonemus apis. Ventral view of female, (a) Last leg of 



male of same species , . . . . .101 



