Macrostomum hystrix Fig 28.jpg

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Creative Commons Licence
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Illustration
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The penis-stilette has a rather narrow crenated base, a wider middle portion and presents a gradual curve from the base to the hooked and sharply pointed end in which the opening is located. p. 47

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith