File:Natural history (1907) (14775221854).jpg

Identifier: cu31924012490797 (find matches)
Title: Natural history
Year: 1907 (1900s)
Authors: National Antarctic Expedition, 1907-1904 Fletcher, Lazarus, Sir 1854-1921 Bell, F. J. (Francis Jeffrey), 1855-1924 British Museum (Natural History)
Subjects: Geology Zoology Botany
Publisher: London, Printed by order of the Trustees of the British Museum
Contributing Library: Cornell University Library
Digitizing Sponsor: MSN

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n der linkenKorperseite ist nur das riickwartige, von den beiden Hoden nur der linke getroflfen. Vergr. 32-fach. Fig. 8.—Weibchen (aus Cyste V). Hinter dem vorigen, in der Gegend der Nephridialcanale gefiihrterQuerschnitt. Nur der rechte Nephridialcanal ist in demselben getrofEen. Vergr. 32-fach. Fig. 9 und 10.—Mannchen (aus Cyste V). Aus Flilchenschnitten combinirte und etwas schematisirteTeilbilder. In Fig. 9 sind die mehr dorsal gelegenen Organe, wie der Erniihrungsapparat, dermannliche Geschlechtsapparat und der Dorsalabschnitt des weiblichen Geschlechtsapparates, fernerdie Nephrostomata dargestellt. Fig. 10 zeigt den Ventralabschnitt des weiblichen Geschlechts-apparates mit den Ovarien, ferner die Endblasen mlt dem unpaaren Endabschnitte der Nephridien.Zwischen den Nephrostomatis (ns in Fig. 9), und den in Fig. 10 mit H< bezeichneten Durch-schnittsstellen durch die Nephridien verlaufen in dorsoventraler Eichtung die kurzen Nephridial-canale. Vergr. fiir beide Fig. 79-fach.
Text Appearing After Image:
Aut del West,Newman chromo. MYZOSTOMA. SIPUNCULOIDEA. By W. F. Lanchester, M.A.,Kings College, Cambridge. Phascolosoma Sooium. This collection consists of some thirty specimens, all of small size, which weremostly taken by means of a net from holes in the ice, while the Discovery wasin Winter Quarters. One specimen, however, was captured with the dredge, thedepth being given 9,3 100 fathoms. That the bulk of them belong to a singlespecies of Phascolosoma is quite certain, both from their general appearance andfrom a study of the relations of the various organs, though it is to be noted thatthese relations have been found to be far from invariable. Some half-a-dozen,however, have been the cause of considerable difficulty in the exact determination oftheir specific identity; yet it has seemed best to include them under the abovespecies. In the first place, they agree in the main details of their structure withthe typical forms; and I have not been able to place them without hesitationun

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