Excerpt from Journal of the Academy of Natural Sciences of Philadelphia, 1821, Vol. 2: Part I Head at; operculum large; branchial rays, or gills, four or five. Jaws attened mouth horizontal, very small, furnished with small and slender teeth, anteriorly hooked, and with minute posterior ones resembling velvet. Body short, thick, and compress ed. Anal between the ventral fins. Fish of small size indigenous to North America and inhabiting fresh water. 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."