Hercules' Dog Discovers Purple Dye
... that Rubens' painting Hercules' Dog Discovers Purple Dye depicts the wrong kind of snail?
... that <a href="./Peter_Paul_Rubens" id="mwAzI" rel="mw:WikiLink" title="Peter Paul Rubens">Rubens</a>' painting <i id="mwAzM"><b id="mwAzQ"><a class="mw-redirect" href="./Hercules'_Dog_Discovers_Purple_Dye" id="mwAzU" rel="mw:WikiLink" title="Hercules' Dog Discovers Purple Dye">Hercules' Dog Discovers Purple Dye</a></b></i> <i id="mwAzY">(detail pictured)</i> depicts the wrong kind of snail?