This project was undertaken by the senior author in connection 

 with writing the Ran a clamit ans species account for the Catalogue of 

 American Amphibians and Reptiles. Numerous persons have assisted with 

 references and information concerning the species, and we thank them 

 for their generous contributions of time and information. Providing 

 distribution records and loan of material from their institutions were: 

 E.R. Brygoo and Jean Lescure, Museum National d'Histoire Naturalle, Paris; 

 F.R. Cook, National Museum of Canada; E.J. Crossman, Royal Ontario Museum; 

 J.R. Harrison, III and A.E. Sanders, The Charleston Museum; A.J. Kluge, 

 University of Michigan Museum of Zoology; H. Marx and H. Voris, Field 

 Museum of Natural History; C.J. McCoy, Carnegie Museum of Natural History; 

 M.A. Nickerson, Milwaukee Public Museum; W.M. Palmer, North Carolina State 

 Museum of Natural History; E.R. Reilly, New York State Museum; G.R. Zug, 

 National Museum of Natural History; and R.G. Zweifel, The American Museum 

 of Natural History. Others providing information were Kraig Adler, the 

 late J.D. Anderson, Stephen D. Busack, Charles J. Chantell, Nick Drahos, 

 Robert Dorrance, Carl Cans, F.R. Gehlbach, K.E. Goellner, J.Alan Holman, 

 Mike Shepard, Barbara Pytel, and Kentwood Wells. We are grateful for 

 their kind assistance. 



We thank especially Margaret McKinley and Robert Reisman for their 

 long hours spent in the library and pouring over maps. Daniel McKinley 

 and Susan Hart assisted in many ways. Rie Lee showed great patience in 

 typing the manuscript. Librarians in the Interlibrary Loan office of The 

 University Library were most helpful. 



The cover illustration is a drawing of a pale bicolor Ran a clamitans 

 from Woosh Pond, Cranberry Lake, New York, drawn by Ryland Loos from a color 

 transparency by M.M. Stewart and reproduced by Robert Speck. 



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