JOHNSON: NEW TIPULIDAE. 133 
vol. 9, p. 99, 1901) which may prove to be a synonym. T. dejecta 
Walker is a widely distributed species, common during April and 
May. The time of appearance is a very important factor in the Tipu- 
lidae, and the absence of full data with the great number of described 
species is to be deplored. In all of the genera containing numerous 
s{)ecies, there are spring, summer, and autumn species, closely related, 
yet apparently distinct, although in some cases they may only represent 
seasonal forms. 
In studying the variations in the venation of the Tipulidae, I have 
been greatly interested in Professor James G. Needham's paper in 
Bulletin 124 of the New York state museum (p. 199-248, pi. 11-30, 
1908). It seems high time that dipterists should adopt a nomenclature 
conforming as closely as possible to that used in other orders of insects, 
thus avoiding confusion and materially aiding in establishing a more 
uniform nomenclature for venation and advancing homological studies. 
Printed April, 1909. 
