318 



Annals Entomological Society of America [Vol. X, 



The most abundant and most common Mycetophilid species 

 found during the season was Mycetophila punctata Meigen. 

 The eggs of this species were collected from between the gills 

 of a Hydrocybe. (?) They were small, white, oval bodies, 

 lying singly between the gills. Several of these were individ- 

 ually isolated in small vials with a portion of food. These eggs 

 hatched in from twenty-four to forty-eight hours. 



The larvae fed in the fleshy portion of the fungus, and passing 

 quickly through five instars, pupated within six or eight days. 

 Pupation took place within a silken cocoon, usually in the 

 ground, and the adult insect issued within three days. 



