LIST OF FIGURES XV 



FIG. PAGE 



58. Part of the Malpighian tubule of an Anopheles claviger, 



infected with the embryos of Filaria immitis . . 221 



59. Tabanus kingi $ ........ 227 



60. A rock at Khor Arbat, Anglo-Egyptian Sudan, shewing 



sites selected by Tabanus kingi for ovipositing . . 228 



61. Egg-mass and mature larva of Tabanus kingi . . . 229 



62. Comparative morphology of the proboscis of Glossina (I), 



Melophagus (II) and Stomoxys (III) .... 244 



63. Wing of Glossina palpalis to shew the venation . . 245 



64. Gravid uterus of G. palpalis, containing a larva at an ad- 



vanced stage of development ..... 246 



65. Glossina palpalis. Photographs shewing the flies in a 



position of rest ........ 257 



66. Internal anatomy of Glossina palpalis .... 259 



67. View on River Gambia to shew a typical haunt of Glossina 



palpalis ......... 261 



68. Glossina palpalis in the act of feeding .... 264 



69. Glossina palpalis. Female in the act of parturition . . 266 



70. Freshly laid larva of G. palpalis shewing the changes in 



the body form ........ 267 



71. G. palpalis. Puparia before and after the escape of the 



imago ......... 268 



72. Glossina morsitans. Dorsal view of female . . . 276 



73. Path through thin deciduous bush, to shew a typical haunt 



of G. morsitans ........ 279 



74. Base of a tree in Nyasaland shewing one of the positions 



in which the pupae of G. mofsitows may be found . . 284 



75. Diagram of the life-cycle of Trypanosoma gambiense . . 312 



76. Transverse section (semi-diagrammatic) of the proboscis 



of an infected Glossina . . . . . . 314 



77. Culture of Trypanosoma pecaudi, from the intestine of 



G. palpalis ........ 334 



78. Culture of Trypanosoma congolense from the intestine of 



G. palpalis ........ 351 



79. Trypanosoma simice. Successive stages in the division . 354 



80. Trypanosoma simicB. Large multinucleate form . . 354 



81. Wing venation of Stomoxys calcitrans 



in resting 



82. Side view of head of Stable-fly. A, proboscis 



position ; B, proboscis extended .... 356 



83. Stable-fiy, Stomoxys calcitrans ...... 357 



84. Stomoxys calcitrans. Eggs ...... 359 



85. Lynchia maura $........ 376 



86. Hippobosca rufipes ......... 378 



87. Developmental cycle of Hcemoproteus columbcB . . 381 



88. Trypanosoma theileri. A, small crithidial form; B, large 



individual from blood of cow ..... 385 



356 



