ACKNOWLEDGMENTS 



Partial or full drafts of this checklist were read by Adao J. 

 Cardoso, James R. Dixon, William E. Duellman, W. Ronald Heyer, 

 Marinus S. Hoogmoed, Paul M. Kornacker, R. Abdem Lancini, Ismael 

 Muhoz, Juan A. Rivero, Ivan Sazima, and Paulo E. Vanzolini. All 

 made valuable comments and suggestions that improved greatly the 

 list, and all deserve my gratitude. However, any mistakes or 

 omissions are my exclusive responsibility. I recognize that there 

 were several instances when different systematic approaches were 

 recommended for a taxonomic group; in those cases, I made the 

 decision on which approach to adopt. 



Many people and institutions provided help or furnished 

 information, but I want in particular to express my thanks to the 

 Grupo de Ecologia Animal and the Library of the Faculty of 

 Sciences, Universidad de Los Andes. Nancy M. Sierra help me 

 through the whole process of collecting bibliographic references. 

 Also, Pedro Hidalgo, Robinson Perez, John E. Simmons, Pedro 

 Durant, Maria Jose Praderio, John D. Lynch and George R. Zug were 

 helpful in all or part of the elaboration of this work. 



Several manuscript versions were typed by Ana Isabel Osorio. 

 The final draft was typed into a computer by Belkis Rivas. My 

 thanks to them as well. 



This study was partially funded by CDCHT-ULA Projects TC-51- 

 79/89 and TC-02-90, and by CONICIT Project PI-011-90. 



