20 
Psyche 
[Vol. 87 
general, they are conspicuously colored (Levi, 1968). This bright 
coloration could serve as additional advertisement of the web as a 
noxious stimulus. 
Acknowledgements 
Many persons have given me advice during this study; in particular 
I acknowledge the ideas and suggestions of Theodore D. Sargent, 
William B. Nutting, and Carolyn Cearley. I would like to thank Alan 
C. Kamil for providing the blue jays used in the study. This work 
represents a portion of a thesis submitted in partial fulfillment of the 
requirements for the Ph.D degree at the University of Massachusetts. 
A portion of the support for this study came from a Sigma Xi grant in 
the aid of research. 
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