Excerpt from United States Exploring Expedition, During the Years 1838, 1839, 1840, 1841, 1842, Under the Command of Charles Wilkes, U. S. N, Vol. 20: Herpetology by Charles Girard To the zoologists into whose hands the present work may come, it is deemed expedient to state, that as far as the families and genera are concerned, the author does not profess to give a full synonymy thereof. Indeed, it was first assumed that the earliest quotation would suffice, and it is but subsequently that the most prominent sources have been referred to. In regard to the species, all the synonyms that could be found have been quoted. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This 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.