306 
Psyche 
[September-December 
Alfred F. Newton, Walter Suter, and Quentin D. Wheeler 
generously contributed material to my collection. The many peo- 
ple, too numerous to mention individually, that have helped me 
with field work are thanked. Field work support has been pro- 
vided by the U.S. National Science Foundation through the Evo- 
lutionary Biology Committee of Harvard University and by oper- 
ating grants from the Canadian National Research Council. Dr. 
Newton has reviewed the manuscript. 
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