18 
Psyche 
[February 
The scarcity of this fly during 1923 in comparison with its 
abundance in 1922 is undoubtedly due to the very dry weather 
during the late summer and fall. Owing to the drouth there was 
comparatively little fungi. As this species is said, by European 
authors, to frequent Amanita citrina, the paucity of fungi during 
the late summer and early autumn would, also, probably account 
for the scarcity of the fly. It seems an interesting problem; — if 
the hibernating females lay eggs in the spring and the larvae live 
on fungi, on what does the female lay her eggs, when there are 
practically no fungi in the early spring? 
I hope, during the coming season if possible, to make some 
experiments relative to the breeding habits of this fly and infor- 
mation regarding its further distribution will be greatly ap- 
preciated. 
