CONTENTS. 



INTRODUCTION .......... 9 



Structure and habits of flies ...... 16 



Morphology ........ 20 



Head .......... 20 



Mouth-parts . ..... 24 



Antennae ......... 27 



Thorax ......... 31 



L,egs .......... 34 



Abdomen ......... 36 



Wings ..... ... 27 



Vestiture ......... 43 



Chaetotaxy ........ 45 



Internal anatomy ....... 49 



Classification of diptera ....... 51 



Collection and preservation of flies .... 62 



GROUP CHARACTERS AND SYNOPTIC TABLE OF THE FAMILIES OF 



DIPTERA ........ 65 



FAMILY CHARACTERS AND SYNOPTIC TABLES OF GENERA 



I Tipulidae ... ... Si 



II Psychodidae ........ 92 



III Dixidae 94 



IV Culicidae ........ 96 



V Chironomidae . . . . . . . no 



VI Cecidomyidre . . . . . . 117 



VII Mvcetophilidae ....... 131 



VIII Bibionidae ........ 140 



IX Simuliidae .... , 144 



X Blepharoceridae ...... 148 



XI Orphnephilidae . .... 153 



XII Rhyphidae ........ 155 



XIII Leptidae ......... 157 



XIV Stratiomyidae ....... 164 



XV Acanthomeridas . . . . . . . 173 



XVI Tabanidae . . . . . . . . 176 



XVII Cyrtidse 182 



XVIII Nemestrinidae ...... 186 



XIX Apioceridas . . . . . . . . 188 



