File:Medusae of world-vol02 fig317-318 Cunina proboscidea - Cunina vitrea (14595560107).jpg

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English: Cunina proboscidea & 318. Cunina "vitrea"

Identifier: medusaeofworld02mayo (find matches)
Title: Medusae of the world
Year: 1910 (1910s)
Authors: Mayor, Alfred Goldsborough, 1868-1922 Mayer, Alfred Goldsborough, 1868-1922
Subjects: Jellyfishes Cnidaria
Publisher: Washington, D.C., Carnegie institution of Washington
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

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T73n. 3i6. 3H. Figs. 311 and 312 — Cunina globosa, after Eschscholtz. Figs. %W and 314.—Cunina campanulata, after Eschscholtz. Fig. ■Cit.-Cunina lativtnirh, after Gegenbaur, in Zeit. fur wissen Zool., Bd. S. Fig. lil.-Cunina proboscidea. After Metschnikoff, in Arbeit. Zool. Inst. Wien. Metschnikoff, 1886, and Woltereck, 1905, find that amoeboid, neutral germ-cellswander out from both the male and female gonads of Cumna proboscidea These amoeboidcells then beain to divide in the entodermal pouches and gelat.nous substance of the sub-umbrella After this process of division these cells fuse with one another, so that one ot the
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37- Fig. 317 A. Radial section through a tentacle and its peroniun Lobianco. Cunina proboscidea. Drawn by the author, from sections of a medusa collected at Naples by Dr. B. Radial section through a sense-club and its otoporpa. I figures ectodermal nuclei are shown as black dots while entodermal are circles. Cav, indicates the outer extremityof the perradial stomach-pouch, em, the solid cord of entoderm at the bell-margin in the place of the nng-canalwhich is here absent, m,, entoderm. «, exumbrella. gon, gonad, oc, sensory-club, otp, otoporpa. p, peron.um. su.subumbrella. (, tentacle, o, velum.

Fig. 318.- Cunina vilrea, after Gegenbaur, in Zeit. fur wissen. Zool., Bd. 8 = C. proboscdeaf 478 MEDUSAE OF THE WORLD. component cells incloses the other. The inclosed cell then divides and develops into anembryo, while the enveloping cell becomes very large, sends out pseudopodia-like processes,and serves apparently only for the attachment, locomotion, and nutrition of the embryo. Theembryo gr

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2
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30 July 2014

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