Philadelphia; M. Sayeeduddin, Osmania University, India; Father 

 Siegrist, St. Joseph's College; Dr. Rolf Singer, Fundacion Miguel 

 Lillo, Argentina; Dr. A. C. Smith, National Science Foundation; 

 Dr. Wilson N. Stewart and Floyd A. Swink, University of Illinois; 

 Nduwez Uzoma, Nigeria; Dr. Gregorio T. Velasquez, University of 

 the Philippines; Dr. Paul Voth, Dr. Barbara Falser, and Dr. Robert 

 L. Shaffer, University of Chicago; Archie Wilson, Summit, New Jer- 

 sey; and Dr. Richard D. Wood, University of Rhode Island. 



Visiting geologists included Dr. John A. Wilson, University of 

 Texas; Dr. Natascha Heintz, Paleontologisk Museum, Sweden; Pro- 

 fessor Eugenia Montanaro-Gallitelli, University of Modena, Italy; 

 Dr. Mario Braga de Abreu, Brazil; Dr. Charles A. Reed and Dr. 

 Robert Bader, University of Illinois; Dr. Robert Sloan, University 

 of Minnesota; Leslie Marcus, University of California; and Research 

 Associate Bryan Patterson, Department of Geology of the Museum. 



Visiting zoologists included Dr. Theodore Haltenorth, Zoologische 

 Sammlung des Bayerischen Staates, Germany; Dr. Karl Koopman, 

 Queens College; Miss Barbara Lawrence, Museum of Comparative 

 Zoology; Dr. Joseph C. Moore and Dr. Hobard Van Dusen, American 

 Museum of Natural History; Donald Baepler, University of Okla- 

 homa; C. Blair Coursen, General Biological Supply House; Dr. and 

 Mrs. William J. Graber and Dr. Richard B. Selander, Illinois State 

 Natural History Survey; Gerd Heinrich, Peabody Museum of Nat- 

 ural History; C. J. Lindsay, Wellington Museum, New Zealand; 

 Wendell M. Levi, Charleston; William Phelps, Venezuela; Ram S. 

 Singh, British Guiana Museum and Zoo; Dr. George Wallace, Mich- 

 igan State University; Dr. Alexander Wetmore and Robert Kanaz- 

 waw, United States National Museum; Dr. Telford H. Work, Rocke- 

 feller Institution; Dr. Frank M. Carpenter, Harvard University; Dr. 

 Joseph Camin and Dr. Paul Ehrlich, Chicago Academy of Sciences; 

 Dr. Sidney Camras, Chicago; Earl Cross, Purdue University; Dr. 

 John Downey, University of Southern Illinois; Dr. and Mrs. Rob- 

 ert E. Gregg, University of Colorado; Glenn Haas, Great Lakes; 

 Dr. Henry Howden, Canada Department of Agriculture; Dr. Monte 

 Lloyd, University of Chicago; Miss Kathy O'Neill and J. H. Fales, 

 United States Department of Agriculture; Dr. R. Matsuka, Univer- 

 sity of Kansas; Dr. Rodger D. Mitchell and Daniel M. Cohen, Uni- 

 versity of Florida; Dr. James A. G. Rehn, Academy of Natural 

 Sciences of Philadelphia; Dr. Charles L. Remington, Osborne Bio- 

 logical Laboratories; Dr. William Snow, Tennessee Valley Authority; 

 Dr. S. Utida, Kyoto University; Alfred E. Ebeling and Dr. Carl L. 

 Hubbs, Scripps Institution of Oceanography; Dr. Allan D. Linder, 

 University of Wichita; James Tyler, Stanford University; Teruya 



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