50 
Psyche 
[March 
collecting the Cryphocricos , John Polhemus (Englewood, Colorado) 
for identifying them, my husband, Thomas Parsons, for examining 
the manuscript, and Donald Chant and the Department of Zoology, 
University of Toronto, for making available the laboratory facilities 
for this research. The investigation was made possible by a grant 
from the National Research Council of Canada. 
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