Dugesia gonocephala, schematic, showing pigment-cup ocelli, nervous system, digestive system
<a href="//commons.wikimedia.org/wiki/User:Zapyon" title="User:Zapyon">Andreas Neudecker</a>
CC BY-SA 4.0
<ul><li><a href="//commons.wikimedia.org/wiki/File:Dugesia_Anatomy_schematic.svg" title="File:Dugesia Anatomy schematic.svg">File:Dugesia Anatomy schematic.svg</a></li></ul>