~~ foal 
é ‘tat 
as 
=~ 
- 
4 
. Y Peni =a = 4 ' ; in 
i — —o a. % 
Pam 4 eh bs keh) - ey eee 
; es * “Mieet La. ee 
. ‘a, . = ~, = 
: = ai” 
CONTENTS. ° 
pace 
PREFACE a - ‘ é _ Or Saeas 
«A SHORT ACCOUNT OF THE MORE IMPORTANT CHARACTERISTICS 
a OF THE FAMILIES OF DIPTERA - = : 1 ae 
aa CHAPTER I. 
ss FOSSIL DIPTERA . : : ~; Sars 
| CHAPTER II. 
Bi CLASSIFICATION OF DIPTERA, WITH AN INTRODUCTORY ACCOUNT 
OF THE ANCIENT AND MODERN CLASSIFICATION OF INSECTA 7 
CHAPTER III. 
; THE APHANIPTERA, OR FLEAS - : - ; See 
. CHAPTER IV. 
_ ‘THE CECIDOMYID&, OR GALL GNATS_~— - - - inl ate 
£ CHAPTER V. 
«THE MYCETOPHILIDA, OR FUNGUS GNATS ; ; - 92 
CHAPTER VI. 
THE BIBIONIDE : ; epee 3 - 152 
THE SIMULIDE : : : eaters - 165 
CHAPTER VII. 
THE CHIRONOMIDA, OR MIDGES z - : - 169 
INDEX - - - - - - - - 207 
