BARBOUR AND NOBLE: AMPHIBIANS FROM PERU. 423 



/ 



There are five towns known as Potrero in Chile. The specimens 

 probably came from some one of these localities rather than from 

 some wholly indefinitely located pasture. 



Telmatobius marmoratus (Dumeril and Bibron). 



C yclormnphus marmoratus Dumeril et Bibron, Erpet. gen., 1841, 8, p. 455. 

 Cyclorhainphus marmoratus Peters, Monatsb. Berl. akad., 1873, pi. 2, fig. 2,. 



pi. 3, fig. 3. 

 Telmatobius marmoratus Boulenger, Cat. Batr. Sal. Brit, mus., 1882, p. 192. 



Diagnosis (extracted from original description). Vomerine teeth in two 

 very small groups between the choanae. Toes half webbed. The tarso- 

 metatarsal joint reaches the tip of the snout when the hind leg is extended 

 forward. Skin perfectly smooth, neither glands nor tubercles on any part of 

 the body. Ground-color p,bove grey varying to brown; upper surface marbled 

 with black and generallj- irregularly covered with little white spots. Ventral 

 surface grey, with or without black marblings, the appendages darker than the 

 throat or abdomen. 



Boulenger (1882, p. 192) adds in part to this description: — ^ Choanae 

 large. Tympanum small, hidden. The hind hmb carried forward along the 

 body, the tibiotarsal articulation does not reach the eye. A flat parotoid 

 gland frequently indistinct. 



Habitat. Huasacona, a hacienda in the District of Asangaro, De- 

 partment of Puno, Peru. 



Remarks. Dumeril and Bibron (1841, p. 455) in describing the 

 species say: — 



"Cette espece est une decouverte faite au Chih par M. Pentland; le lieu oil 

 elle a ete trouvee par ce savant naturaliste se nomme Guasacona." 



We have made a vain search for this locality in all the old maps and 

 statistical volumes at our disposal. There seems to have been no 

 locality by that name in either Chile or Bolivia. There is, however, 

 in Peru just one Guasacona, a hacienda of 221 (Resumen * * * habi- 

 tantes del Peru en 1876, 1878, p. 104) or 427 (Soldan, Dice, geogr. 

 estad. Peru, 1877, p. 427) inhabitants. Telmatobius marmoratus 

 has been recorded from Chile by Werner (1897, p. 263), but this is 

 most probably a case of misidentifi^cation. There is no good evidence 

 to show that any specimens of T. marmoratus besides the types have 

 ever been taken. 



