ONI OCCASIONAL PAPERS of the MUS * COMR ZOOXm MUSEUM OF NATURAL klSTORY The University of Kansasmi 8 Lawrence, Kansas HARVARD NUMBER 27, PAGES 1-27 JUNE 17, 1974 A REASSESSMENT OF THE TAXONOMIC STATUS OF SOME NEOTROPICAL HYLID FROGS By William E. Duellman 1 In the course of research directed towards the completion of a checklist of the frogs of the family Hylidae, I have concluded that several taxonomic changes are necessitated by new data and re-evaluation of older material. These taxonomic changes and their justifications are the subject of this paper (Table 1). For the loan of specimens or provision of working space in their respective institutions, I am grateful to Walter Auffenberg, Avelino Barrio, James E. Bohlke, Werner C. A. Bokermann, Javier Castro-viejo, James R. Dixon, Josef Eiselt, Alice G. C. Grandison, Jean Guibe, Birgitta Hansson, Walter Hellmich, Charles W. Myers, the late James A. Peters, Gunther Peters, Douglas A. Rossman, Greta Vestergren, Charles F. Walker, and Ernest E. Williams. Addition-ally, I am indebted to M. J. Fouquette, Jr., Bertha Lutz, and Linda Trueb for information incorporated herein, and to the latter for executing figure 4. Travel to European museums was made possible by a grant (No. 5063) from the Penrose Fund of the American Philosophical Society. Throughout the text specimens are indicated by the following abbreviations: AL-MNRJ Adolpho Lutz Collection, Museu Nacional Rio de Janeiro AMNH American Museum of Natural History ANSP Academy of Natural Sciences of Philadelphia BMNH British Museum (Natural History) FSM Florida State Museum KU University of Kansas Museum of Natural History LSU Louisiana State University, Museum of Zoology 1 Curator, Division of Herpetology, Museum of Natural History, and Pro-fessor, Department of Systematics and Ecology, The University of Kansas, Lawrence, Kansas 66045.