Descriptions of New Hylid Frogs
From México and Central America

Biological exploration of México and Central America hasrevealed the presence of a diverse fauna, elements of which haveundergone speciation in separate areas within the relatively smallregion. Some genera of amphibians, especially Eleutherodactylusand Hyla, are represented by many species having small geographicranges in México and Central America. Most of the species of Hylainhabiting the lowlands have been known to science for many years, andmost of the novelties today are found in the less accessible highlands.No fewer than 19 new species of hylid frogs have been discovered andnamed from México and Central America in the past decade.

In the spring and summer of 1966 I studied hylid frogs in many partsof southern México and Central America; the field work was designed toobtain specimens and data that would resolve certain systematicproblems. To a certain extent the studies were successful, but in thecourse of the work five previously unknown hylids were discovered; theseare named and described in this paper. The only species described hereinthat I do not know in life is one of Plectrohyla that has beenrepresented in museum collections for several years but was not obtainedin my own field work.

In this paper I am presenting diagnoses, descriptions, and briefcomments on the relationships of five new species and one subspecies.More exhaustive accounts will be included in a monograph, now inpreparation, on the Middle American hylids.

For use of comparative material used in the preparation of thispaper, I am indebted to Richard J. Baldauf, Texas Cooperative WildlifeCollection (TCWC); Charles M. Bogert, American Museum of Natural History(AMNH); James A. Peters, United States National Museum (USNM); Hobart M.Smith, University of Illinois Museum of Natural History (UIMNH); CharlesF. Walker, University of Michigan Museum of Zoology (UMMZ); and ErnestE. Williams, Museum of Comparative Zoology (MCZ). KU refers to theUniversity of Kansas Museum of Natural History. I am especially gratefulfor help in obtaining specimens and data to Linda Trueb, who accompaniedme throughout México and Central America, where we were joined by JohnD. Lynch in Costa Rica and Charles W. Myers in Panamá. Linda Trueboffered helpful suggestions in the course of preparing the manuscript,and David M. Dennis skillfully prepared the illustrations which moreaccurately depict the frogs than my written descriptions; both of thesepersons have my thanks for their contributions.

Ratibor Hartmann of Finca Santa Clara, Chiriquí, Panamá, madepossible our travels to

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