ARKIV FÖR ZOOLOGI. BAND 3. N:0 12. 



Hypopachus mulleri Böttger. 



Twelve specimens, varying in length from 25 to 49 mm. 

 Tatarenda, Bolivia, Chaco. Erland Nordenskiöld. March — 

 April 1902. 



In Boll. Mus. Zool. Toriiio 1897 N:o 274 Peracca gives 

 the same patria (Bolivian Chaco) for this species. 



The colour above is about the same in all specimens: 

 bluish gra}^ witli a black network, growing more distinct 

 further down the sides, where it merges into their black 

 ground-colour. Below, the colour varies considerably, the 

 bottom-colour changing from light brown almost to black. 

 The white or yellow spöts are also very different, being in 

 some specimens numerous, small and equally disposed all 

 över the lower surface, in other confluent to irregular longi- 

 tudinal bands, while in more dark-coloured individuals they 

 are few and more obscnre. Only two specimens lack döts 

 on the throat, which in all the others is of the same colour 

 as the belly. I mention this because Boettger found the 

 throat as Avell as the back without döts. 



In a specimen dissected, the stomach was filled with a 

 great number of termites of the species Termes dirus Klug, 

 kindly de termined by my friend Dr. N. Holmgren. 



Telmatobius jelskii Peters. 



Four adult specimens, 42—53 mm. in length, 2 males and 

 2 females, and beside these 8 tadpoles in different states of 

 developement. Moreno, Andes of Argentina, October 1901. 

 Erland Nordenskiöld. 



As far as I know, the species has hitherto been found 

 only in Peru and Ecuador. It is a mountain form. 



The two males have the innerside of their thumbs densely 

 covered with small horny points; besides, there are some 

 scattered on the breast. 



The tadpoles are light olive-coloured, having sometimes 

 a few indistinct dark spöts on the back. The skin is quite 

 smooth, except in one of the old specimens, the back of 



