352 
Psyche 
[December 
dor (Chadab 1979). This suggests that in at least Polybia scrobalis 
gaster-dragging behavior or chemicals deposited as a result of that 
behavior, may have other functions than identifying the path to a new 
nest site. 
Acknowledgments 
We thank O. W. Richards for identifying the wasps, R. L. Jeanne, 
C. S. Henry, and B. Holldobler for criticizing the manuscript, The 
Smithsonian Tropical Research Institute (STRI) for providing facili¬ 
ties on Barro Colorado Island, Panama, and the Summer Institute of 
Linguistics for providing facilities at Limoncocha, Ecuador. Ruth 
Chadab was funded by a Visiting Research Appointment from STRI 
and a National Science Foundation Doctoral Dissertation Improve¬ 
ment Grant; Carl W. Rettenmeyer was funded by NSF Grant BMS 
75-03389. 
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