MCZ LIBRARY OCCASIONAL PAPERS AUG 4 1989 r-r-i "A of the ■ ■ ' -MUSEUM OF NATURAL HISTORY The University of Kansas Lawrence, Kansas NUMBER 132, PAGES 1-14 JULY 20. 1989 NEW SPECIES OF FROGS, CENT ROLEN ELLA, FROM THE PACIFIC VERSANT OF ECUADOR AND SOUTHERN COLOMBIA By William E. Duellman' and Patricia A. Burrowes^ During the past two decades field parties from The University of Kansas have been surveying the anuran fauna of the Pacific slopes of the Andes in southern Colombia and Ecuador. Earlier collections of centrolenid frogs from Ecuador formed the basis for a synopsis of the members of that family in Ecuador by Lynch and Duellman (1973). Subsequently, four more new taxa were named by Duellman ( 1980, 1981), and one was named by Flores( 1985). Other unnamed taxa have accumulated during the past decade. Collections made by the junior author at La Planada in Colombia contained representa-tives of these new taxa. Her collections provided the impetus to prepare descriptions of the species named herein. In addition to describing three new species, we take this opportunity to present a review of the geographic and altitudinal distribution of the species of centrolenids on the Pacific versant of Ecuador and southern Colombia, north to Departamento Valle del Cauca. SYSTEMATICS At present, the recognition of species groups in Centrolenella (fide Savage, 1967) is strictly phenetic. As noted by Lynch and Duellman (1973) 'Curator, Division of Herpetology, Museum of Natural History, and Professor, Department of Systematics and Ecology, The University of Kansas, Lawrence, Kansas 66045-2454 U.S.A. ^Assistant Professor, Department of Biology, Colegio Universitario de Cayey, Cayey, Puerto Rico 00633 U.S.A.