264 
Psyche 
[June 
What is needed now is an experimental investigation of the 
whole matter, testing 1 ) whether such a scent trail is indeed pro- 
duced and followed, 2) how the swarm is finally stimulated to 
begin moving, and 3) how individuals recognize the new site when 
they arrive. 
Acknowledgements 
Without the cooperation of Dr. Antonio Lot Helgueras in making 
available the facilities of the Estacion de Biologia Tropical “Los 
Tuxtlas” this study would not have been possible. Mr. Mark 
Winston assisted in the field. Dr. E. O. Wilson provided helpful 
comments during the preparation of the manuscript. This work 
was supported by National Science Foundation Grant GB-33619 to 
the author and H. E. Evans. 
References Cited 
Frisch, K. von 
1967. The dance language and orientation of bees, trans. by L. E. 
Chadwick. Belknap Press of Harvard University Press, Cam- 
bridge, Mass, xiv -f- 566 pp. 
Jeanne, R. L. 
1973. Aspects of the biology of Stelopolybia areata (Say) (Hymen- 
optera : Vespidae). Biotropica, 5 (3): 183-198. 
Jeanne, R. L. and R. Fagen. 
1974. Polymorphism in Stelopolybia areata (Hymenoptera, Vespidae). 
Psyche, 81: 155-166. 
Naumann, M. G. 
1975. Swarming behavior: Evidence for communication in social wasps. 
Science, 189: 642-644 
