4 U.S. NATIONAL MUSEUM BULLETIN 288 



Senckenberg; Dr. George S. Myers, Stanford University Natural 

 History Museum; Dr. M. Graham Netting and Neil D. Richmond, 

 Carnegie Museum; Hno. Niceforo Maria, Museo del Instituto de La 

 Salle, Bogota; Dr. Gustavo Orces V., Escuela Politecnica Nacional, 

 Quito; Dr. James A. Peters,* formerly of San Fernando State College 

 and now of the United States National Museum; Dr. Juan Racenis, 

 Museo de Biologia, Universidad Central de Venezuela, Caracas; 

 Dr. Juan A. Rivero, University of Puerto Rico at Mayaguez; Dr. Jay 

 Savage, University of Southern California; Dr. James A. Tamsitt, 

 Universidad de Los Andes, Bogota; Dr. E. H. Taylor, University of 

 Kansas; Dr. Wilmot A. Thornton, Universidad del Valle, Cali; Dr. 

 Jean Vellard, Museo de Historia Natural "Javier Prado," Lima; 

 Dr. Charles F. Walker, Museum of Zoology, University of Michigan; 

 Dr. Ernest E. Williams, Museum of Comparative Zoology, Cambridge; 

 Dr. Paulo Vanzolini, Departamento de Zoologia, Secretaria da 

 Agricultura, Sao Paulo; and Mr. George Zug, Museum of Zoology, 

 University of Michigan., 



Dr. Federico Medem made special efforts to collect for us in out-of- 

 the-way places on numerous occasions, often at his own expense. For 

 this we cannot thank him enough. Dr. Gerardo Reichel-Dolmatoff of 

 Bogota 1 made for us several significant collections for which we are 

 most grateful. Most of the drawings contained herein are the works of 

 Miss Ester Coogle and Mr. Paid Laessle, artists in the Department of 

 Biology, University of Florida, and for these carefully executed figures 

 the artists have our thanks. 



Mr. Crawford Jackson, graduate assistant at the University of 

 Florida, contributed materially to this study on more than one occa- 

 sion, and we are grateful to him. Olive B. Goin spent weeks poring 

 over maps to trace down obscure localities and she also typed much 

 of the earlier drafts of the manuscript. We cannot thank her enough. 

 To our numerous friends in Colombia, whose kindness not only made 

 our visits profitable but made them exceedingly pleasant and enlighten- 

 ing, nuestros mas sinceros agradecimentos. The National Science 

 Foundation made it possible for us to visit museums both in this 

 country and abroad, and gave us an opportunity to visit and collect 

 in Colombia. Thus, we are deeply grateful to the National Science 

 Foundation for the following grants: Doris M. Cochran, GB-407 

 (201D-294), and Coleman J. Goin, G-5628, G-8625, G-13325, and 

 GB-1339. 



♦The manuscript was in the hands of the editor at the time Dr. Cochran came down with her terminal 

 illness, and since I was in Gainesville, the chore of checking the thousand and one details necessary in a job 

 of this magnitude fell on the shoulders of Dr. Peters at the United States National Museum. I cannot thank 

 him enough for the diligent and careful labor he contributed to the final preparation of this work. — C.J.G 



