CONTENTS 



I'AGE 



PREFACE ------- ili 



A SHORT ACCOUNT OF THE MORE IMPORTANT CHARACTERISTICS 



OF THE FAMILIES OF DIPTERA - - - - xi 



CHAPTER I. 



FOSSIL DIPTERA .-.-.- i 



CHAPTER H. 



CLASSIFICATION OF DIPTERA, WITH AN INTRODUCTORY ACCOUNT 



OF THE ANCIENT AND IMODERN CLASSIFICATION OF INSECTA 7 



CHAPTER HI. 



THE APHANIPTERA, OR FLEAS - - - - - 21 



CHAPTER IV. 



THE CECIDOMYID^E, OR GALL GNATS - - - "3^ 



CHAPTER V. 



THE MYCETOPHILIDyE, OR FUNGUS GNATS - - "92 



CHAPTER VI. 



THE BIBIONID^ - - - - - "15- 



THE SIMULID/E - - - - - ' 165 



CHAPTER VII. 



THE CHIRONOMIDjE, OR MIDGES - - - - 1 69 



INDEX -------- 207 



