Darwin's frog (Rhinoderma darwinii), warty toad (Rhinella spinulosa), Argentine horned frog (Ceratophrys ornata) 1,2. Rhinoderma darwinii. = Darwin's frog (Rhinoderma darwinii)
3,4,5. Phryniscus nigricans. = warty toad (Rhinella spinulosa)
6. Uperodon ornatum. = Argentine horned frog (Ceratophrys ornata)
Date 1843
Source http://www.flickr.com/photos/biodivlibrary/8432834506
Author Thomas Bell; Charles Darwin; Elizabeth Gould; John Gould; Richard Owen; G. R. Waterhouse
Full title The zoology of the voyage of H.M.S. Beagle ... during the years 1832-1836.
BHL Page URL http://www.biodiversitylibrary.org/page/14062302
Source: https://commons.wikimedia.org/wiki/File:The_zoology_of_the_voyage_of_H.M.S._Beagle_(Reptiles_Pl._20)_(8432834506).jpg
Darwin's frog or southern Darwin's frog (Rhinoderma darwinii) is a rhinodermatid frog native to the forest streams of Chile and Argentina. The most striking feature of this frog is the tadpoles' development inside the vocal sac of the male.
The warty toad (Rhinella spinulosa) is a species of toad in the family Bufonidae that is found in the Andean Argentina, Bolivia, Chile, and Peru.
The Argentine horned frog (Ceratophrys ornata), also known as the Argentine wide-mouthed frog or ornate pacman frog, is the most common species of Horned Frog, from the grasslands of Argentina, Uruguay and Brazil.