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Fig. 9 External view of group 4 of olfactory pores of a worker bee. X 465. 

 Fig. 10 Dorsal view of base of hind wing of*a worker bee, showing group 5 

 of olfactory pores. X 45. 



Fig. 11 External view of group 5 of olfactory pores of a worker bee. X 465. 



The majority of the pores on the legs are shghtly oblong and have 

 openings which as a rule have their long diameters more or less 

 transverse to the long axis of the leg. 



Groups 7, 8, and 9 lie on the outer side of the trochanter (fig. 

 1). Group 7 has 16 pores and lies at the distal end near the 

 anterior margin, group 8 extends along the anterior margin from 

 group 7 almost to the articulation of the trochanter with the 

 coxa, and group 9 extends from the proximal end along the medi- 

 an line two-thirds the distance to the femur. In all three groups 

 the diameter of the largest pore may be three times that of the 

 smallest. The pores of groups 7 and 9 (figs. 12, B and D) have 

 their long diameters directed obliquely across the leg, while in 



