Produced by Chris Curnow, Tom Cosmas, Joseph Cooper and the Online Distributed Proofreading Team at https://www.pgdp.net UNIVERSITY OF KANSAS PUBLICATIONS MUSEUM OF NATURAL HISTORY Volume 15, No. 7, pp. 297-349, pls. 11-18, 7 figs. October 18, 1963 A Review of the Middle American Tree Frogs of the Genus Ptychohyla BY WILLIAM E. DUELLMAN UNIVERSITY OF KANSAS LAWRENCE 1963 UNIVERSITY OF KANSAS PUBLICATIONS, MUSEUM OF NATURAL HISTORY Editors: E. Raymond Hall, Chairman, Henry S. Fitch, Theodore H. Eaton, Jr. Volume 15, No. 7, pp. 297-349, pls. 11-18, 7 figs. Published October 18, 1963 UNIVERSITY OF KANSAS Lawrence, Kansas PRINTED BY JEAN M. NEIBARGER, STATE PRINTER TOPEKA, KANSAS 1963 [Union Label] 29-6531 A Review of the Middle American Tree Frogs of the Genus Ptychohyla BY WILLIAM E. DUELLMAN CONTENTS PAGE INTRODUCTION 301 Acknowledgments 301 Materials and Methods 302 ANALYSIS OF DATA 303 External Morphology 303 Color and Pattern 307 Osteology 307 Tadpoles 310 Breeding Call 312