84 
Psyche 
[ J une 
NOTES ON THE MYCETOPHILIDiE WITH 
DESCRIPTIONS OF NEW SPECIES 
By Frank R. Shaw 
Cornell University, Ithaca, N. Y. 
In working over material preparatory to writing the 
chapter on the Mycetophilidse to be published in the Diptera 
of Connecticut, a few observations were made that are be- 
lived to be best published before that work appears. 
Not a great deal of work has been done in this country on 
this group of insects since the appearance of the Genera In- 
sector um fascicle by Johannsen in 1909. Later, in a series of 
bulletins published by the Maine Agricultural Experiment 
Station, the same author gave keys to all of the known spe- 
cies occuring in this country. 
Since that time Edwards of the British Museum has done 
the most outstanding work in the group. He revised the 
family in 1924 and as it is the belief of the writer that the 
paper of Edwards is not easily accessible to the average 
worker on Diptera, it is considered to be worthwhile to give 
a summary of Edwards’ revision, giving the arrangement of 
the group according to Johannsen and comparing it with the 
classification of Edwards. 
In Johannsen’s revision of the group, nine subfamilies 
were recognized. According to Edwards’ grouping there 
are ten subfamilies but they are not equivalent in all cases to 
those of Johannsen which bear the same name. Since it is 
the belief of the writer that there are many of the same or 
closely related species occuring both in Europe and in Amer- 
ica, it is felt that a classification should be adopted which 
is uniform. Consequently, the revision of Edwards is being 
followed in this paper. The following table lists only those 
genera found in North America : 
