BEHAVIOR OF A PARASITIC BEE 379 



that came out of one of the mud cells. This gave four bees 

 resting on the netting of that side of the cage through which 

 the direct rays of the sun were entering and one resting, in the 

 sunlight, on the opposite side of the cage. 



Experiment 3. — At 9 a. in., the room was darkened and kept 

 so for forty -five minutes. 



At the close of this period, one bee was resting on the netting 

 of that side of the cage through which the direct sunlight had 

 formerly entered, three were clinging to the netting of the top 

 of the cage and the remainder were on the floor. 



Experiment 4. — At 9.45 a. m., the cage was placed in a window 

 through which the sunlight was entering. The window-side of 

 the cage, the top, the side remote from the window and the floor 

 were in the direct sunlight. The bees clinging to the top of the 

 cage were jarred off. 



At 9.53 A. M., five bees were resting on the netting of the side 

 of the cage through which the direct rays of the sun were enter- 

 ing and one was basking in the sunlight on the floor. No other 

 bees were in sight. The bees on the netting did not rest quietly 

 thereon. They seemed to be quite restless. They would crawl 

 up the netting, through the sunlight, until they reached the 

 border of the dark place at its top, then they would usually 

 drop downwards, nearly to the floor, fly against the netting 

 and repeat. Occasionally, on reaching the shadow, the bee 

 would enter it and crawl about in it a short t'me before 

 dropping. 



At 9.56 A. M., six bees were moving restlessly about on the net- 

 ing of that side of the cage through which the direct rays of the 

 sun were entering and two were moving about, in the sunlight, 

 on the floor. No other bees were in sight. The bees on the 

 screen behaved in the same manner mentioned above. Some- 

 times, instead of cHmbing all of the way, the bee flew upwards 

 for a part of the distance. 



At 9.59 A. M., seven bees were moving about on the netting 

 of the side of the cage through which the direct rays of the sun 

 were entering. No other bees w^ere in sight. 



Experiment 5. — At 10.00 a. m. the cage was rotated, as gently 

 as possible, through an angle of 180 degrees, and the lower six 



