Excerpt from The Species Groups of the South American Frogs of the Genus Eleutherodactylus (Leptodactylidae)Group I: long-legged, smooth-bellied frogs with smooth heads, fairly large in size, no bony ridges on head.Group II: Granular-bellied, Shorter-legged frogs usually hav ing a frontoparietal depression, bodies moderately long, no bony ridges on head.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.