44 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 63 



examined, but they have not yet been thoroughly studied. The anten- 

 nae of the honey bee and probably the antennas of all Hymenoptera 

 do not carry any of the organs first described by Hicks. 



The olfactory pores in other hymenopterous insects are similar in 

 position to those of the honey bee. Among the 29 species examined, 

 these pores vary much in the number of groups and in the number 

 of pores contained in the individual groups. As a rule, the lower 

 the insect the fewer the groups and more isolated are the pores. 

 Cimbex, regarded as the lowest hymenopteron, has the least number 

 of groups of all the species examined, but it stands fourth in regard 

 to the number of isolated pores. Its total number of pores is larger 



Fig. 4. — Diagram of lateral view of a worker bee's sting and its accessory 

 parts, showing the location of the olfactory pores as indicated by the numbers. 



than that of many of the higher forms. Among ants the variations 

 are also great. For the legs of ants the number of pores varies from 

 211 to 356 and for the winged ants the total number varies from 

 463 to 1,090. The smallest specimen among the ants and the second 

 smallest one of all the Hymenoptera examined is a female with 463 

 pores as the lowest number. The drone honey bee with 2,608 pores 

 has the highest number. The smallest specimen examined is a wasp 

 with 688 pores. The following table including 6 of the 29 species 

 examined will illustrate the variations in the number of olfactory 

 pores as found on the three pairs of legs and the two pairs of wings. 

 The letters " F," " M," " H " and " G " stand for front, middle, hind 

 and grand, in the order named. The " Total " means all the pores 

 found on all 6 legs, and the " G. total " means all the pores found on 

 all 6 legs and all 4 wings combined. 



