IV 



CONTENTS continued. 



PAGE 



Chapter XI. THE EFFECT OF EXTERNAL FACTORS UPON 



TSETSE-FLIES. 



The Effect of a Lowering of the Temperature 

 The Effect of Raising the Temperature 

 Mode of Death Influence of Colours 

 Influence of Odours . . . . . . . . 107 



,, XII. MEANS OF LIMITING AND DESTROYING TSETSE- 



FLIES. 



Enemies of Tsetse-flies Predatory Enemies 

 of Tsetse-flies Predacious Arachnids Pre- 

 dacious Insects . . . . . . . . 110 



,, XIII. MEANS OF LIMITING AND DESTROYING TSETSE- 

 FLIES (continued}. 



Parasites of Tsetse-flies Parasites of Tsetse 

 Pupae Parasites of the Adult Flies . . 119 



XIV. PROPHYLACTIC MEASURES. 



Clearing Late Burning Catching and 

 Systematically Trapping Tsetse-flies Simple 

 Catching Trapping and Catching by means 

 of Bird-lime or " Tanglefoot " Other 

 Methods of Catching and Destroying Tsetse- 

 flies Artificial Breeding Places Employ- 

 ment of Tsetse-repellents for the Protection 

 of Stock Other Precautions for the Pro- 

 tection of Stock Personal Protection of 

 Human Beings Destruction of Big Game. . 136 



XV. MODE OF COLLECTING, PRESERVING AND STUDY- 

 ING TSETSE-FLIES. 



Materials needed for Collecting Tsetse-flies 

 Catching Tsetse-flies Method of Collecting 

 Tsetse-flies Killing Tsetse-flies after being 

 Caught Pinning Tsetse-flies : their Trans- 

 mission to England Preservation of Speci- 

 mens in Alcohol Preservation of Larvae and 

 Pupae Field Notes Number of Specimens 

 of Each Species Required Attacks by Ants 

 or Termites : the Effects of Mould. . . . 152 



XVI. KEEPING AND BREEDING TSETSE-FLIES IN 



CAPTIVITY. 



Rearing Tsetse-flies in Laboratories in 



Europe . . . . . . . . . . . . 158 



XVII. DISSECTION OF THE SALIVARY GLANDS OF TSETSE- 

 FLIES 159 



,, XVIII. COLOUR CONVENTIONS TO INDICATE THE DIS- 

 TRIBUTION OF TSETSE-FLIES 161 



,, XIX. SPECIAL POINTS FOR CONSIDERATION IN STUDYING 



THE BIONOMICS OF ANY SPECIES OF 

 Glossina. 

 Suggestions for Future Work . . . . 162 



XX. BIBLIOGRAPHY OF THE PRINCIPAL PUBLICATIONS 



CONSULTED . . . . . . . . . . 165 



INDEX 179 



