36 
Psyche 
[March 
a valid species and tentatively to assign this female there. 
Additional collecting, or better still, rearing experiments, 
will undoubtedly clarify the relationship of this female, 
of the males described as montana, and of oregonensis. The 
most interesting aspect of this female, and my reason for 
mentioning it here, is its analogy with the long winged 
females of carolinensis , described above. There clearly 
exist or have existed in both the eastern and western popu- 
lations of Brachypanorpa long winged and short winged 
females. The collecting data on carolinensis, given in some 
detail above, suggest that the long winged female is now 
the dominant, if not the only, form in existence in the 
eastern population. Comparable data on the western fe- 
males have not been obtained, but I believe the occurrence 
of even the single long winged female shows that a similar 
genetical trend, (i.e., towards the development of both 
short winged and long winged females) has existed in both 
populations. More intensive collecting of Brachypanorpa 
in Oregon, especially at one locality over a whole season, 
might furnish data indicating even further similarities. 
