OLFACTORY SENSE OF THE HONEY BEE 



303 



As the worker bee is most suitable for study, the pores on the 

 wings, the third leg, and the sting of specimen No. 15, which 

 has been drawn (figs. 1 and 2), will be described in detail. The 

 differences on the other legs of this specimen and the variations 

 found in the three castes will then be discussed. 



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Fig. 3 Ventral view of base of front wing of a worker bee, showing groups 1 

 and 2 of olfactory pores. X 45. 



Fig. 4 External view of group 1 of olfactory pores of a worker bee. X 455. 

 Fig. 5 External view of group 2 of olfactory pores of a worker bee. X 465. 



Groups 1 and 2 (figs. 1 and 3) lie on the lower surface of the 

 front wing. Group 1 occupies almost a central position on the 

 subcosta, while group 2 lies near the anterior and distal margin 

 (fig. 3, Sc). These groups are somewhat triangular in shape, 

 with their apices facing each other, and the concave edge of 

 group 1 always faces the posterior margin of the subcosta. A 

 light band (represented by a line in fig. 5), surrounds the distal 



