Number 20. December 20, 1915. 



OCCASIONAL PAPERS OF THE MUSEUM OF 

 ZOOLOGY 



UNIVERSITY OF MICHIGAN 



Ann Arbor, Micrigan. Punr.isnED by the University. 



DESCRIPTTGX OF A NEW TAILLESS AMPHIBL\N 

 OF TLIE FAMILY DENDROBATID^. 



By Alexander G. Ruthven. 



Several specimens of an undescribed amphibian were ob- 

 tained in the Santa Marta Mountains, Colombia, by the 

 Bryant Walker Expedition, in 1913. As will be seen from the 

 description, the form falls under Boulenger's definition of the 

 family Dendrobatid?e, but it diiTers from the known forms in 

 this family sufficiently to warrant its recognition as the type of 

 a new genus. 



Geobatrachus, new genus. 



Description : Pectoral girdle firmisternal ; precoracoids 

 present, very slender ; omosternum and sternum cartilaginous. 



Scientific Papers of the Univeksitv of Michigan No. 21. 



