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Psyche 
[June 
Acknowledgements 
I thank the following for the loan of Museum material: Dr. M. 
G. Emsley and Dr. N. D. Jago, Academy of National Sciences, 
Philadelphia; Dr. Ashley Gurney, U. S. National Museum, Wash- 
ington, D.C. ; Dr. D. R. Ragge, British Museum (Natural History) 
London; Dr. S. L. Tuxen, Zoological Museum, Copenhagen. I col- 
lected living specimens of Lanxoblatta emarginata during Phase C 
of the Alpha Helix expedition to the Amazon in 1967. I thank the 
National Science Foundation for support on the Amazon expedition 
under Grant NSF-GB-5916. I thank Mr. Samuel Cohen for taking 
the photographs. 
References 
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