6 
Psyche 
[March 
ACKNOWLEDGEMENTS 
I have showed specimens of these wasps to several eminent hymenop- 
terists and solicited comments from them. All of their suggestions 
have been considered carefully, and several have been incorporated into 
the above discussion. All agreed that these wasps are not bethylids, 
and the majority agreed that the erection of a new family was justified. 
These men were J. G. Betrem, J. C. Bradley, C. Jacot-Guillarmod, 
K. V. Krombein, C. F. W. Muesebeck, and O. W. Richards. I wish 
to express my thanks to all of these men. 
Examination of the types of Clystopsenella longiventris Kieffer at 
the British Museum was made possible by a grant from the Permanent 
Science Fund of the American Academy of Arts and Sciences. 
