The Nautilus, Vol. 42

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Excerpt from The Nautilus, Vol. 42: A Quarterly Journal Devoted to the Interests of Conchologists, July, 1928, to April, 1929Many new subgenera are proposed, unfortunately with out diagnoses, the author contenting himself with the designation of a type species, whose chief characters will forever give such diagnosis Sixteen new species are described or differentiated, the latter based on the erroneous identifications of earlier authors.The Check List should be in the hands of every collector of North American Unionidae. - bryant walker.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.