Number 33. December 16, 1916. 



OCCASIONAL PAPERS OF THE MUSEUM OF 

 ZOOLOGY 



UNIVERSITY OF MICHIGAN 



Ann Arbor, Michigan. Published by the University. 



A NEW GENUS AND SPECIES OF AMPHIBIAN OF 

 THE FAMILY CYSTIGNATHIDAE. 



By Alexander G. Ruthven. 



Several specimens of a tailless amphibian which evidently 

 represents a new oenus in the family Cystignathidae were se- 

 cured by the Bryant Walker Expedition to the Santa Marta 

 Mountains in 191 3. The species is dedicated to Dr. George 

 A. Boulenger, the eminent herpetologist, to whom the writer 

 is greatly indebted for assistance in his studies in herpetology. 



Cryptobatrachus, new genus. 



Drscrif'tioit : Pectoral girdle arciferous; episternum and 

 sternum cartilaginous, the latter without a bony style ; upi)er 

 jaw toothed ; sacral diapophyses cylindrical; terminal phalanges 

 claw-shaped ; outer metatarsals united ; fingers free ; toes fullv 

 webbed ; all dibits with large adhesive disks ; pupil horizontal ; 

 tympanum exposed ; tongue heart-shaped, slightly notched and 



Scientific Papers of the University of Michigan No. 34. 



