ANDERSSON, BATRACHIANS FROM BOLIVIA, ARGENTINA, PERU. 17 



either uniform silvery white, or there are, as on the figure, 

 a few scattered spöts. In one specimen the whole upper 

 surface (except that of the limbs) is uniformly spotted. A 

 black dorso-lateral streak runs from the tip of the snout 

 through the eye nearly to the loin. In the largest specimen 

 the sides below this streak are yellovvish white but in the 

 smaller one more or less dark. The extremities and the lower 

 surfaces are in all examples uniformly light. 



This form seems to be nearl^^ allied to Hyla punctillata 

 Peters and H. punctatissima R. & Liitk., but I think it hardly 

 justified to identify it with any of those, as the coloration 

 is distinctly different. It resembles rather much the figure 

 Reinhardt and Lutken give of H. punctatissima (Videnskabl. 

 Meddel. Köpenhamn 1861 tab. 4 fig. 5), but the bottoni- 

 colour of this one is brown and the spöts are of quite another 

 type, smaller, more numerous and diffuse, and uniformly 

 scattered all över the back and the head. The black lateral 

 streak is also missing. From the same reasons it cannot be a 

 H. punctillata, to which it, however, corresponds in the light 

 ground-colour. 



Seven developed specimens and beside those one witli 

 the larval tail partly left, caught in insect-nets on the leaves 

 of the bushes, where these frogs Ii ve. Even the specimen, 

 not fully developed, was get in the same way; the tadpoles, 

 liowever, live in water, as Dr. Holmgren told me. The 

 largest specimen measures only 18 mm. between nose and 

 vent and the larval specimen 15 mm. If the larger specimen, 

 as Dr. Holmgren believes. is full-grown, the tadpoles would 

 attain about the same size as the adults, and this species 

 would be one of the smallest of the genus Hyla. 



I ha ve submitted this form as well as the following one 

 to the revision of Dr. Boulenger, and he kindly let me know 

 that he could not find them described in literature. but 

 (^onsidering them to be young, hé advised me to put them 

 aside un til better comparing material can be obtained. As 

 it is, however, very uncertain whether I shall ever get any, 

 I consider it best to publish descriptions and figures of them, 

 in order to make it easier to state, whether they are juvenile 

 forms of any species, already described, or they are really new. 



As to this species at least, I think, however, much speaks 

 in favör of its not growing much larger. Dr. Holmgren ob- 



Arkiv för Zoologi. B:d 3. X:o 2V. 2 



