The upright "siren" in the picture, though appearing female, is that described in the text as "<i>homo marinus</i> (sea-man)" captured in Brazil by merchants of the West India Company, and dissected at Leiden by Petrus Pavius (<a href="https://en.wikipedia.org/wiki/Pieter_Pauw" class="extiw" title="en:Pieter Pauw">Pieter Pauw</a>), with <a href="https://en.wikipedia.org/wiki/Joannes_de_Laet" class="extiw" title="en:Joannes de Laet">Joannes de Laet</a> also present: its "head and the breast even as far as the navil(sic.) was of an humane shape, but.. without the sign of a tail". Bartholin came into possession of the skeletal hand and rib (figures right) through his friend, de Laet.<sup id="cite_ref-Bartholin—1654——_1-0" class="reference"><a href="#cite_note-Bartholin%E2%80%941654%E2%80%94%E2%80%94-1">[1]</a></sup><sup id="cite_ref-webster_2-0" class="reference"><a href="#cite_note-webster-2">[2]</a></sup><sup id="cite_ref-broedel_3-0" class="reference"><a href="#cite_note-broedel-3">[3]</a></sup>