Slaty-headed Longbill or Grey-winged Longbill (above), Dwarf Longbill or Plumed Longbill  (below)
<bdi><a href="https://en.wikipedia.org/wiki/en:Joseph_Smit" class="extiw" title="w:en:Joseph Smit"><span title="Dutch natural history illustrator">Joseph Smit</span></a>
</bdi>
1884
<i><a href="//commons.wikimedia.org/wiki/Catalogue_of_the_birds_in_the_British_Museum" title="Catalogue of the birds in the British Museum">Catalogue of the birds in the British Museum</a></i> (<a rel="nofollow" class="external text" href="https://archive.org/details/catalogueofbirds09brit">Vol. 9</a> Plate I)