ANDERSSON, B.ATRACHIANS FROM BOLIVIA, ARGENTINA, PERU. 5 



which is somewhat tubercular as in the adults. The youngest 

 larva, the hind limbs of which are only 3 mm. in length, 

 measures 30 -\- 60 mm. ; the others are but slightly larger. 

 The largest length of tiie tail (68 mm.) is found in a 

 specimen with rather small hind limbs; and the least length 

 (55 mm.) in a specimen with developed front limbs and 

 reduced horny beak and teeth, thus standing just on the 

 limit of the adult state. Largest length of body (40 mm.) 

 we find in another specimen, being in the same state of deve- 

 lopement. Thus, the tadpoles reach nearly the same length 

 of body as the fullgrown individuals. 



On the lower lip the horny teeth are placed in three 

 rows ; on the upper one in two, the innermost of which, how- 

 ever, is interrupted in the middle. 



A comparison between the sexes shows that the limbs, 

 especially the front ones, are considerably longer in the male 

 than in the female, while other measurements are quite 

 similar in both sexes. In the largest larva the hind limbs 

 are, as shown below, already nearly as long as in the adults, 

 while the före limbs are considerably shorter. 



The great breadth of the head of the larva depends on 

 the inner gills, which are still maintained. 



d"^ 



Larva 



Length of boch^ in nnn 52,53 



» of feniur in '-/o of length of body . . 49,5 



» of tibia » » . . 47,7 



» of tarsus with 4th toe in ''/o of length 



of body . . ....... 70,4 



» of före linib in "/o of length of body . 67,6 



» of eye in "/" of length of body . . . 10,5 



» of nose » » » :■ . . 14,5 



Breadth of head » » » . . . 39,0 



48 



45,8 



43,8 



42 1 40 I 

 41,7 I 42,5 I 

 45,2 I 42,5 i 



Hylodes gollmeri Peters. 



Two specimens, 40,42 mm. in length. San Fermin, Bolivia. 

 Aug. 1904. Holmgren. 



