RESULTS OF THE YALE PERUVIAN EXPEDITION OF 1911.— 

 BATRACHIANS AND REPTILES. 



By Leonhard Stejneger, 



Curator of Reptiles and Batrachians, United States National Museum. 



Thanks to the efforts of Prof. H. W. Foote^ the Yale-Peruvian ex- 

 pedition of 1911, under the direction of Prof. Hiram Bingham, brought 

 home a small, but highly interesting collection of batrachians and 

 reptiles which have been placed in my hands for report. The first 

 set of specimens has been generously donated to the United States 

 National Museum. 



Class AMPHIBIA. 



BUFO MARINUS (Linnaeus). 



Whatever may be the status of Tschudi's Bufo molitor,^ the half- 

 grown toad, collected at Santa Ana, altitude 3,000 feet above sea level, 

 on August 3, unquestionably belongs to the present species. I have 

 compared it both with fuU-grown and with younger specimens from 

 La Guaira, Venezuela, and find it to agree perfectly with them. The 

 tympanum equals one-half the diameter of the eye; the outline of the 

 snout is exactly like that of the young Venezuelan specimens; and the 

 parotoids are proportionally as large as in the adults. 



BUFO SPINULOSUS Wiegmann. 



One young and two minute specimens, just transformed, from 

 Cuzco, July 9, 1911. 



BUFO INCA, new species. 



Diagnosis. — Head with bony ridges, the supraorbital and postor- 

 bital ridges forming together a flat curve and with the parietal curve a 

 Y-shaped figure; tympanum very distinct, oval, erect, its longest 

 (vertical) diameter about two-thirds the horizontal diameter of the 

 eye; no horn-like appendage on upper eyelid; snout projecting; no 

 tarsal fold; interorbital space much broader than upper eyelid; paro- 

 toids large, descending on side of neck. 



Habitat. — Peru. 



Type-specimen. — Cat. No. 49557, U.S.N.M.; Huadquinia, Peru, 

 about 5,000 feet altitude; August, 1911. 



' See Roux. Rev. Suisse ZooL, vol. 15, pt. 2, 1907, p. 303. 



Proceedings U. S. National Museum, Vol. 45— No. 1992. 



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