

?Hnibers;itp of ilame 



Maine imkiA Imiwd Station 



ORONO 



BULLETIN No. 172. DECEMBER, 1909. 



(Distributed March, 1910.) 



THE FUNGUS GNATS OF NORTH AMERICA. 

 Part 1. 



CONTENTS. PAGU 



Introduction 209 



Characters 210 



Habits and Economic Relations 214 



Remedial measures 216 



Table of Subfamilies 216' 



Bolitophilinse 217 



Mycetobiinae 222' 



Diadocidiinas 231 



Ceroplatinge 233 



Macroceringe 265 



Table of measurements 274 



Explanation of plates 275 



