256 C. H. TURNER. 



a moment, entered. On departing for the field, it spent consider- 

 able time hovering about the burrow, as though it were examin- 

 ing the surroundings. 



Experiment V. 



While the bee was afield, a rectangular piece of paper, 12 cm. 

 long by 8 cm. wide, in the center of which was a hole ij mm. in 

 ■diameter, %uas so adjusted over the Jiest as to have the hole in the paper 

 ■coincide with the burroiv-opening. The other conditions were the 

 same as in experiment three. 



On returning from the field, the bee arrived at brick W^^ and 

 turned about so as to face the northern surface of the border. 

 In the hovering, halting, manner mentioned above, it sidled east- 

 ward, hovering a moment over each hole reached, but entering 

 none. Over the nest it hovered a little longer than it did over 

 holes L^, Z3, L^, Zj ; but, instead of entering, it continued its search 

 eastward. On reaching hole R^ the bee dropped into it. Imme- 

 diately it emerged, hovered a moment, then dropped again into 

 the same hole. Reemerging from hole R^, it journeyed eastward 

 and dropped into hole R^. Emerging from this hole, it passed 

 to brick zero, hovered for about a minute above the burrow but 

 did not enter. It now began to roam about at random. After 

 the lapse of some time, it reappeared above the nest, hovered a 

 moment and then dropped into the burrow. On emerging from 

 the nest, the bee hovered about for some time and then circled 

 about the neighborhood, before departing for the field. 



Experiment VI. 



The same conditions as in experiment V. 



On returning from the field, the bee arrived at brick W^^. In 

 the hovering, halting, manner described above, it sidled eastward, 

 halting over each hole, but entering none. It started to enter 

 hole Z,, but retreated before the body was three fourths hidden. 

 As soon as the nest was reached, the burrow was entered. 



Conclusions. 

 It is evident that the behavior exhibited by the above experi- 

 ments cannot be classed as either anemotropisms or as photo- 

 tropisms, for neither the orientation of the body nor the direction 



