44 
Psyche 
[March 
structive criticism of the manuscript and gratefully acknowledge the 
assistance of Drs. D. H. Janzen, C. W. Rettenmeyer and T. C. 
Emmel during the field aspects of the study. I am indebted to Dr. 
K. V. Krombein for his prompt description of the wasp and to Dr. 
P. M. Marsh for assistance with the identification of the parasite. 
Mr. R. J. Snider kindly identified the Collembola prey. Finally 
I am grateful to Miss N. K. Lind and Mr. W. C. Kerfoot for 
technical advice and assistance relating to the dissections and de- 
scriptions of the sternal gland and female reproductive system. 
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