1979] 
O’Neill — Behavior of Philanthus psyche 
41 
Acknowledgments 
I would like to thank Dr. Howard E. Evans for initiating this 
study and for help throughout the course of the research. This paper 
is dedicated to him on the occasion of his sixtieth birthday. Thomas 
A. Gorell, Thomas Bennett and James Ellis made important 
suggestions in the early stages of the study. Darryl T Gwynne 
Mary Hathaway, Allan Hook, and William Rubink reviewed the 
manuscript. This paper is part of a study of the comparative 
behavior of solitary wasps, supported by the National Science 
Foundation, Grant No. BNS 76-09319 to Howard E. Evans. 
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