39(5 bulletin: miseim of comparative zoology. 



cotilla is on the border line between Cajaniarca and Lanibayeciue. 

 Like Huancabaniba it is a inountain town on tlie western range of the 

 Andes. 



In the preparation of this paiier we are greatly indebted, especially 

 in our stutly of the genera Phyllobates and Tehnatobius, to Dr. 

 Leonhard Stejneger for the loan of a number of specimens; to Mr. 

 H. W. Prowler for a similar loan of Cope's types of Tdmatobius angus- 

 tilM.s; T. pustulosus, and T. acmarims; to Dr. G. A. Boulenger for his 

 unpublished notes on P/n/llohafrs prafti and to Dr. Louis Roule for a 

 sketch of the pectoral girdle of P. bicolor. 



Ranidae. 

 Phyllobates sylvatica, sp. nov. 



Diagnosis. Closely related to P. latinasus (Cope) from which it may be 

 distinguished by the following characters : — 



Tympanum about one third instead of one half the diameter of the eye. 

 Fh-st finger a trifle shorter instead of a little longer than the second. Tibio- 

 tarsal articulation reaching to the middle of the eye, the anterior corner of the 

 eye, or slightly beyond instead of barely reaching the oye. Upper lip broadly 

 edged with white, posterior face of femur black reticulated with white, chest 

 and throat of young specimens washed with grey which may persist in the 

 adult ; — instead of upper lip narrowly edged with white, posterior face of, 

 femur divided by a yellow line, ventral surface immaculate in both young 

 and adult. 



Range. The wet, forested subtropical highlands ("montana") 

 from Tabaconas to Charape in northwestern Peru. 



Type. M. C. Z. 5,344 from stream-bed at Tabaconas (near Huanca- 

 baniba) northwestern Peru; 1 September, 1916, G. K. Noble. 



Description of Type. Snout moderately prominent, as long as the diameter 

 of the orbit; loreal region vertical; nostril nearer the tip of the snout than the 

 eye; interorbital space a little broader than upper eyehd; tympanum half 

 concealed by a glandular fold, about one third the diameter of the eye; 

 discs well developed, smaller than tympanum; two small metatarsal tubercles, 

 inner oval, outer rounded; a small oblique ridge in the middle of the inner 

 side of the tarsus; tibiotarsal articulation reaching to the middle oi the eye. 

 Skin smooth, glandular on the sides. 



Uniform dark brown above; a black stripe extending entirely around the 

 ibody; the upper edge of this stripe, in the body region, bordered with yellow 



