24 Joshua Laerm, M. A. Menzel, and J. L. Boone 



ACKNOWLEDGMENTS'^^ thank the staff of the Electron Microscopy 

 Laboratory at the University of Georgia and, particularly, M. Farmer 

 for his patience in providing training in the use of the equipment. 

 M. E. McGhee, R. Fisher, and J. Pagels provided specimens under 

 their respective care. M. Kennedy, and M. Harvey examined several 

 specimens. A critical review by G. L. Kirkland, Jr. much improved 

 the manuscript. Support for this project was provided by the University 

 of Georgia Museum of Natural History and National Science Foundation 

 grant BSR 9011661 at Coweeta Hydrological Laboratory, North Carolina. 



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