An Account Of The Crustacea Of Norway Copepoda Harpacticoida 2 V

Author : Georg Ossian Sars
Publisher : Forgotten Books
ISBN 13 : 9781333096038
Total Pages : 292 pages
Book Rating : 4.0/5 (96 download)

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Download or read book An Account of the Crustacea of Norway, Vol. 7 written by Georg Ossian Sars and published by Forgotten Books. This book was released on 2016-08-01 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from An Account of the Crustacea of Norway, Vol. 7: With Short Descriptions and Figures of All the Species; Copepoda Supplement, Parts I and II, Calanoida, Harpacticoida (Part); With 16 Autotypic Plates Specific Characters - Female. Body moderately slender, with the anterior division oblong oval in form, greatest width not nearly attaining half the length and occurring somewhat behind the middle; dorsal face only slightly vaulted. Cephalosome nearly as long as the exposed part of the trunk, and exhibiting behind the middle dorsally a distinct transverse suture; anterior extremity narrowly rounded. Rostral filaments of moderate length and abruptly reflexed. Last trunkal segment completely coalesced with the preceding one; lateral lobes triangularly produced, and extending somewhat beyond the middle of the genital segment. Urosome comparatively short, scarcely exceeding in length of the anterior division; genital segment only slightly protuberant below, and about the length of the 2 succeeding segments combined; anal segment very small. Caudal rami scarcely longer than they are broad; apical seta: well developed and somewhat divergent, the innermost but one, as usual, considerably longer than the others. Anterior antennae rather elongated, ex tending, when reflexed, to the end of the caudal rami. Posterior antennae and oral parts almost exactly as in X. Fallax. Natatory legs likewise of a very similar structure, though having the spinules of the inner ramus fewer in number. Last pair of legs, however, rather unlike those in the said species, the outer 2 joints being, as in X. Borealis, completely coalesced to an elongated some what curved piece armed at the end with only 3 comparatively short, subequal Spines, edges of the piece nearly smooth, with only a few cilia at the outer curvature. Body in the living animal highly pellucid, with only a faint rosy pig ment at the end of some of the segments. 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.