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File:EB1911 Tapeworms - female genital ducts in Trematodes and Cestodes.jpg

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English: Diagrammatic projections to exhibit the relations of the female genital ducts in Trematodes with those in Cestodes. A, in endoparasitic Trematodes (Malacotylea). B, in ectoparasitic Trematodes (Heterocotylea). C, in Cestoda. (The ovary (a) leads into (bb) the oviduct, which is joined at (g) by the duct of the yolk-glands (h, h, Y). In B it is also joined by a paired vagina k, k, and by the “vitello-intestinal duct” (Laurer's canal, f). In the Cestodes the vagina is present (V); the canal of Laurer (LC) is now vestigial (present in Caryophyllaeus as the posterior vagina). The uterus (X in figure C) begins in all cases at the shell gland (c, d) and may exhibit a swelling (RS) for the retention of the spermatozoa. ii are sections of the intestine.
Date published 1911
Source “Tapeworms,” Encyclopædia Britannica (11th ed.), v. 26, 1911, p. 410, fig. 7.
Author A and B from Lankester's Treatise on Zoology, part iv.; C by Frederick William Gamble.
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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.
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“Trematodes” article

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current18:51, 18 January 2019Thumbnail for version as of 18:51, 18 January 2019631 × 1,045 (216 KB)Library Guy (talk | contribs)dotted an i
17:56, 17 January 2019Thumbnail for version as of 17:56, 17 January 2019631 × 1,045 (216 KB)Bob Burkhardt (talk | contribs){{Information |description ={{en|1=Diagrammatic projections to exhibit the relations of the female genital ducts in Trematodes with those in Cestodes. A, in endoparasitic Trematodes (Malacotylea). B, in ectoparasitic Trematodes (Heterocotylea). C, in Cestoda. (The ovary (''a'') leads into (''bb'') the oviduct, which is joined at (''g'') by the duct of the yolk-glands (''h'', ''h'', ''Y''). In B it is also joined by a paired vagina ''k'', ''k'', and by the “vitello-intestinal duct” (Laurer's...

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