Results Of The Branner Agassiz Expedition To Brazil

Author : Frank Mace Macfarland
Publisher :
ISBN 13 : 9781332315024
Total Pages : 196 pages
Book Rating : 4.3/5 (15 download)

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Download or read book The Opisthobranchiate Mollusca of the Branner-Agassiz Expedition to Brazil (Classic Reprint) written by Frank Mace Macfarland and published by . This book was released on 2015-08-05 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Opisthobranchiate Mollusca of the Branner-Agassiz Expedition to Brazil During the explorations of the Branner-Agassiz expedition to Brazil in 1899 a small collection of Opisthobranchiate Mollusca was made by Mr. A. W.Greeley, a member of the expedition. These were turned over to the writer for study, and the results obtained are embodied in the present paper. The Opisthobranchs of the Brazilian coast are but little known, no systematic effort having been made as yet to collect and study them, and it is only occasionally that reference to them is to be found in the literature upon the subject. Several shell-bearing Opisthobranchs have been described by various authors, but the naked members of the group have received but scant attention, and Von Ihering is practically the only author who has examined the Brazilian forms. His list and description of six species of Nudibranchs published in 1886, has remained for twenty years with but scanty additions. The collection made by Mr. Greeley, though but small and made without any especial attention to the group, adds seven to the list of species thus far known from Brazilian waters, and is an indication of the results which careful and extended collecting in those regions might secure. Two shell-bearing Opisthobranchs were also found in the collection made by Mr. Greeley and studied by Professor W. H. Dall, and are listed in his "Mollusks from the Vicinity of Pernambuco," Proceedings of the Washington Academy of Sciences, III. 1891. p. 139-147. These are added to the list given in the present paper. There is so little known about the structure of the Opisthobranchs from this region that a somewhat detailed examination of the collection in this respect has seemed warranted, especially since external characters afford so meagre a basis for classification in this group. Unfortunately the number of specimens secured is but small, so that, in most cases, the minute anatomical study was hampered by the lack of material. 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.