422 bulletin: museum of comparative zoology. 



villajrr of Acancocha near Vitoc. At our ivciiu'st ]Mr. John M. 

 lioutwoll, a miniujj fjcologist at the CVrro dc Pasco mines, kindly 

 made a sjxH-ial etVort to secure a series of tliis little-known species. 

 He procuri'd two lots of beautifully jirepared examples from near 

 Tarnia and Palca, two stations in the Oroya district and practically 

 topotypes. 



Telmatouius moxtaxus Philippi. 



Tehnaiobius inontnnus Philippi, Supl. Batr. Chilenos Santiago, 1902, p. 47. 

 {?)Tehnatobius aemaricus Werner, Zool. jahrb. Suppl., 1897, 4, p. 2G3. 

 {?)Telmatobins marmoratus Werner, Zool. jahrb. Suppl., 1897, 4, p. 263. 



Diagnosis (extracted from original description). Indistinguishable from 

 T. laeris except for the narrower head and the toes which arc fully webbed. 



Ilabitot. A lake in the high Andes of the Province of Santiago, 

 Chile. 



Remarks. Tclinatobius vwntanus is evidently the water-form of 

 T. lacvis. It bears the same relation to T. lacvis which T. cvleus bears 

 to T. aemaricus. Philippi in describing T. laevis states that it comes 

 from a pasture, while he states clearly that T. montamts was found in a 

 lake. If Philippi's descriptions may be relied upon, it is very prob- 

 able that the same evolution with change of structure has taken place 

 in Chile as well as in the Andes of southern Peru, where there has 

 been a change from a land to a completely aquatic mode of life. 



Telmatobius laevis Philippii. 

 Telmatobius laevis Philippi, Supl. Batr. Chilenos, Santiago, 1902, p. 43. 



Diagnosis (extracted from original description). No vomerine teeth; 

 choanae very large. Nostrils nearer the eye than the tip of the snout. Tym- 

 panum hidden, covered by undifferentiated skin. Toes one fourth webbed. 

 Skin entirely smooth, no glands on any part of the body. Color above black, 

 no trace of markings; ventral surface light grey, similarly without markings, 

 fingers somewhat lighter in color, especially at the point. 



Habitat. Chile; range probably restricted to some of the pasture- 

 lands of the Andes. Philippi {Loc. cit., p. 44) states that the tj^je- 

 specimens come from "Potrero," in other words from a pasture. 



