File:EB1911 Gastropoda - Male of Littorina littoralis.jpg

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English: Male of Littorina littoralis, Lin., removed from its shell; the mantle-skirt cut along its right line of attachment and thrown over to the left side of the animal so as to expose the organs on its inner face. See legend below.
Date published 1911
Source “Gastropoda,” Encyclopædia Britannica (11th ed.), v. 11, 1911, p. 512, fig. 20.
Author Joseph Thomas Cunningham
Permission
(Reusing this file)
Public domain This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.
English: Legend:
a, Anus.
i, Intestine.
r, Nephridium (kidney).
r′, Aperture of the nephridium.
c, Heart.
br, Ctenidium (gill-plume).
pbr, Parabranchia ( = the osphradium or olfactory patch).
x, Glandular lamellae of the inner face of the mantle-skirt.
y, Adrectal (purpuriparous) gland.
t, Testis.
vd, Vas deferens.
p, Penis.
mc, Columella muscle (muscular process grasping the shell).
v, Stomach.
h, Liver.

N.B.—Note the simple snout or rostrum not introverted as a “proboscis.”

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current16:58, 2 March 2019Thumbnail for version as of 16:58, 2 March 2019468 × 690 (101 KB)Bob Burkhardt (talk | contribs){{Information |description ={{en|1=Male of ''Littorina littoralis'', Lin., removed from its shell; the mantle-skirt cut along its right line of attachment and thrown over to the left side of the animal so as to expose the organs on its inner face. See legend below.}} |date =published 1911 |source =“Gastropoda,” ''Encyclopædia Britannica'' (11th ed.), v. 11, 1911, p. 512, fig. 20. |author =Joseph Thomas Cunningham |permission ={{PD-Britannica}} }} {{en|Legend:}} {|...

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