Field Studies of the Non-Social Wasps 387 
then died in defeat, unable or unwilling to make an ad- 
ditional effort to gain their freedom. 
These records indicate that in some cases all the 
adults in a twig emerged simultaneously, and in other 
_ eases the emergence occurred in inverse order to the dep- 
osition of the eggs. Obviously, data from more mate- 
rial must be gathered before any definite conclusions can 
be reached regarding the fine details of the way H. stir- 
picolus leaves the nest.* 
The dates of emergence which came under my notice 
extended from April 1 to May 10, with the great ma- 
jority of young adults appearing near the first of May. 
or more details see our “Wasp Studies Afield,” pp. 90-94, 1918, 
and Se Acad. Sci., St. Louis, 24: 20-21, 1922. 
