Excerpt from Catalogue of the Described Lepidoptera of North America: Prepared for the Smithsonian Institution I have inserted descriptions of what are deemed by some to be distinct species, but which are regarded by others as mere varieties, in order to give their authors an Opportunity of being heard, and that readers may conveniently compare them. 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.