NO. 9 



OLFACTORY SENSE OF INSECTS McINDOO 



43 



The following results were obtained by the author. The disposi- 

 tion of Hicks' vesicles (called olfactory pores by the author) is best 

 understood by referrini^ to the numbers in fii^ures 2, 3 and 4 of the 



Fig. 3.— Diagram of dorsal view of a worker bee, showing the location of 

 the different groups of olfactory pores as indicated by the numbers. 



honey bee. Groups i to 5 lie on the bases of the wings as indicated 

 by the numbers i to 5. Groups 6 to 18 lie on the legs. Group 19 to 

 21 lie on the sting of the worker and queen (fig. 4)- The same 

 organs are found on the mouth parts of all the hymenopterous insects 



