39 ENTOMOLOGICAL NEWS [Nov., '13 



I then removed the rug to a distance of two feet ; when the 

 wasp returned she flew through the window, alighting on the 

 floor and then she walked directly into the box in a straight 

 line and then up the back wall to the nest. In leaving, this in- 

 sect would never fly directly off the nest and out the window, 

 but would walk down the back of the box to the floor and then 

 along the floor to the window. 



I then laid a blue-covered book directly on the wasp's path 

 in the box. The insect, entering in the usual way, walked 

 around the edges of the book, hesitated for a few seconds at 

 the farthest corner and then climbed up the wall directly to 

 the nest. 



After she had again left we placed a large ball of colored 

 yarn on the floor of the box, completely hiding the nest from 

 view. The returning wasp paid no attention to this, but walk- 

 ed past and went into the nest. Perhaps she was becoming 

 accustomed to being annoyed. This ball was removed after 

 her departure, and the roll of carpet was placed midway be- 

 tween the window and the box directly over the insect's path, 

 so that when she should return she must either walk around 

 the roll or fly over it. The wasp entered and alighted on the 

 floor near the window in the usual way, and then flew over the 

 carpet and into the box containing the nest and up the wall as 

 usual. It is interesting to note that previously the wasp had 

 flown in from the window to the floor and walked the dis- 

 tance to the box ; after the roll of carpet was placed upon its 

 path it flew, entered as usual, and then made another flight 

 to get over the carpet instead of walking over it. 



After the wasp left, a brightly colored pillow was so placed 

 in the box as to entirely hide the nest from view but not deny 

 access to it. The returning insect was confused and made ten 

 flights around the front and sides of the object, but when mak- 

 ing these side trips it would invariably come to the front again, 

 when by remaining at the sides it was nearer home, about 

 twelve inches distant. The eleventh and longest flight brought 

 the excited insect into its usual path on the walls of the box;, 

 then it had no trouble in going direct to the nest. 



