NuMBi-R 136 February 10, 1923 



OCCASIONAL PAPERS OF THE MUSEUM OF 

 ZOOLOGY 



UNIVERSITY OF MICHIGAN 



Ann Arbor, Michigan Published by the University 



DESCRIPTION OF A NEW SPECIES OF PIPA 

 FROM VENEZUELA 



By Alexandkr G. Ruthven and Helen T. Gaic.e 



A collection of reptiles and ami)hi])ians made in Venezuela 

 by M. A. Carriker, Jr., for the Museum of Zoology, in the 

 spring of 1922, contains several si)ecimens of an apparently 

 undescribed species of Pipa. 



Pipa parva, new s])ecies 



Diagnosis: The new species is easily distinguished from 

 Pipa pipa ( Linn. ) by the narrower and less depressed head, the 

 rounded snout and shorter fore leg. Tims, a P. pipa 32 

 mm. in total length has a fore leg 19 mm. long, and the head 

 at the angle of the mouth is 13 mm. wide, while a Pipa parva 

 (adult) of the same length has a fore leg 12 mm. long, and 

 the head is 8 mm. wide at the angle of the mouth. It differs 

 both from pipa, and, as nearly as one can make out from 



