Field Studies of the Non-Social Wasps 405 
filled with fifteen caterpillars, all of one species of 
Tortricidae [S. B. Fracker] and the lower cell contained 
a full-grown larva. The following day, at 11 p. m., I 
found that the larva had lined the nest with what seemed 
a papery material. This was not spun, for if it had 
been the cover-glass which replaced the part of the twig 
which had been cut away would have had a covering 
also; as it was, only the walls were covered, or one might 
Say washed, with the substance. 
Another specimen of this species was found alone and 
dead in an elder stem on May 2. There were no cells 
in the hollow of the twig, and it seemed quite probable 
that it had gone in for shelter from the cold the previous 
autumn and had died with the oncoming winter. 
Odynerus (Ancistrocerus) capra Sauss. [S. A. Roh- 
wer]. 
The nest of this species was in a sumac twig taken 
November 19, 1919. The tunnel, 4% inch wide, had 
been formerly used by a Ceratina bee. The present 
occupant had enlarged the upper portion to a width of 
“4 inch and had inserted mud partitions. The two cells 
were % and ¥% inch deep. The larve had no cocoons, 
but the walls were thickly plastered with some semi- 
transparent varnish. 
By March 31 the organism was completely formed and 
moved in the cell, but made no attempt to force its exit 
until April 9. On that day it bit its way through the 
mud plug and came out. For the first two days it would 
readily lap saliva from my finger-tip, and after that 
it lived on molasses until April 19. 
Interesting details on nest-building of this species is 
given by L. H. Taylor in Psyche, 29: 56-58, 1922. 
