viii CONTENTS 



CHAPTER I^• 



PAGE 



Mosquitoes and Gnats 23 



Characteristics of the order Diptera; Dipterous parasitism; Charactis- 

 tics of the famUy Culicidae; Range and prevalence of mosquitoes; Their 

 breeding habits; Their pathologic importance; The transmitter of malaria; 

 Methods of distinguishing between Anopheles and Culex; The transmitter of 

 yellow fever; Characteristics and habits of the species Ades calopus; Effect 

 of mosquitoes upon live stock; Mosquito control; Characteristics of the 

 family Simuliidse; The Southern buffalo gnat; Effect of its attack upon live 

 stock; Control; Protection and treatment. 



CHAPTER V 



The Flies 35 



Characteristics of the family Tabanidse; Horse-flies; Gad-flies; Effect of 

 their attack; Protection; Characteristics of the family Muscidse; The 

 house-fly; Habits of the house-fly and its relation to the transmission of 

 disease; Its control; Protective measures; The horn fly; Its habits; Effect of 

 its attack; Its control; The tsetse flies; Characteristics of the genus Glossina; 

 Distribution and habits of tsetse flies; Their relationship to trypanosomiasis; 

 Investigations by Bruce and others; Tsetse fly control; Characteristics of 

 the family Hippobosoidse; The "sheep tick" or "louse fly;" Its effect; 

 Treatment. 



CHAPTER VI 



The Dipterous Lakv^ 50 



Myasis; The "screw worm fly;" Its habits; Effect of its attack; Pro- 

 tective measures; Treatment; The flesh flies; The blowfly; Its habits; 

 Protective measures; Characteristics of the family CEstridae; The horse 

 bot flies; Gaslrophilus inteslinalis; Its habits and life history; Effect of the 

 fly and larvffi upon horses; The red-tailed bot-fly; Its habits and effect; The 

 chin fly; The ox bot or warble flies; Their life history; Their economic im- 

 portance; The sheep bot fly; Its habits and life history; Effect of the at- 

 tack of the fly and its larvce; Protection and treatment. 



CHAPTER VII 



The Fleas 65 



Characteristics of the order Siphonaptera; The dog, cat, and human fleas; 

 Differentiation of species; Life history; Relation of fleas to the transmis- 

 sion of infectious diseases; Treatment and control. 



CHAPTER VIII 



The Lice 70 



The sucking lice; Characteristics of the order Siphunculata; The biting 

 lice; Characteristics of the order Mallophaga; Pediculosis of domestic ani- 



