A Contribution to the Study of Ophiurans, of the United States National Museum (Classic Reprint)
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| Stand: | 2015-08-04 03:50:33 |
Produktbeschreibung
Excerpt from A Contribution to the Study of Ophiurans, of the United States National Museum The United States National Museum has been kind enough to entrust to me the study of a considerable collection of ophiurans coming chiefly from the Caribbean Sea, and including both littoral and deep-sea forms. This collection contains a certain number of new species additional to those already discovered by the United States Coast Survey steamer Blake in the same waters. Among the species which are already known, many are very common and offer no special interest, but there are also a good many others the characters of which have not been indicated by the authors in a satisfactory manner, so that I have found it necessary to study them in detail. Among them, I have particularly devoted my attention to the species of Amphiura and Ophiacantha, both genera being understood in the widest sense. It seemed to me useful not to limit my observations to the species represented in the collection which had been entrusted to me, but to extend them to certain neighboring forms, the knowledge of which was likely to help toward an understanding of the former. I will describe and illustrate these forms in the present paper and I think that I shall not be reproached with having made it too long through such additions. For such a comparative study, I had to have recourse to the examination of a certain number of type-specimens, the most important and most numerous of which had been described either by Lütken or by Ljungman. These types, which are kept in the Stockholm Museum and in the Copenhagen Museum were most kindly communicated to me by Professor Theel and my very good friend Doctor Mortensen, to whom I beg to tender my best thanks for their kindness. The United States National Museum communicated to me also a few of Professor Verrill´s species. The collection which has been handed to me includes in all 129 species, of which 24 are new. 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.
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