BARBOUR AND NOBLE: AMPHIBIANS FROM PERU. . 407 



Telmatobius Wiegmann. 



The status of the genus Tehnatobius has not been understood. Its 

 true relations cannot be determined until the internal structure of 

 the type, T. peruviamis, has been described and the statements of Cope 

 (Bull. 34, U. S. N. M., 1889, p. 312) confirmed. For the present we 

 refer his genus Cophaeus to the synonymy of Telmatobius. 



Telmatobius has been confused also with Cycloramphus. Speci- 

 mens of that genus are not available for study but judging from the 

 published descriptions the genus is a well-defined one. It is dis- 

 tinguished from Telmatobius by the presence of stout vomerine teeth 

 arranged in two long rows behind, not between, the choanae. Inguinal 

 glands are present in three of the four described species but are not 

 mentioned in C. hrasilicnsis (Steindachner). In Telmatobius not a 

 single species is so provided. The males of the latter genus, unlike 

 the former, are provided during the breeding season with dense asperi- 

 ties on the chest, forearm, and thumb. Boulenger (Cat. Batr. S^l. 

 Brit, mus., 1882, p. 184) distinguishes Cycloramphus from Telma- 

 tobius by its separated outer metatarsals. This character is not 

 mentioned in several of the descriptions, and until specimens can be ex- 

 amined it seems advisable to use the teeth characters as distinguishing 

 Cycloramphus from Telmatobius. In doing this we find that we have 

 two natural assemblages, Telmatobius confined to the Andes and 

 Bolivian Chaco and Cycloramphus to the highlands of Brazil. After 

 referring Tiimatohius hrasilicnsis '^temds.chnev 2iXi<\ T. (/ii^eni Andersson 

 to Cycloramphus, and upon placing T. asper Boulenger in the syn- 

 onymy of C. asper Werner we have four species of Cycloramphus which 

 may be separated by the following 



Key. 



A. Toes less than half webbed duseni (Andersson) . 



AA. Toes more than half webbed. 



B. Skin smooth fuliginosus Tschudi. 



BB. Skin warty or provided with horny tubercles. 



C. Skin of the body loose and wrinkled; toes completely webbed. 



brasiliensis (Steindachner). 

 CC. Sldn of body not loose dorsally; toes not fully webbed. 



asper Werner. 



