<i>Criniger finschi</i> = <i>Alophoixus finschii</i> <b>Finsch's Bulbul</b> (left); <i>Criniger palawanensis</i> = <i>Ixos palawanensis</i> <b>Sulphur-bellied Bulbul</b> (right); illustration by <a href="//commons.wikimedia.org/wiki/John_Gerrard_Keulemans" title="John Gerrard Keulemans">Keulemans</a>, 1881
<bdi><a href="https://en.wikipedia.org/wiki/en:John_Gerrard_Keulemans" class="extiw" title="w:en:John Gerrard Keulemans"><span title="Dutch bird artist (1842-1912)">John Gerrard Keulemans</span></a>
</bdi>
1881
Catalogue of the birds in the British Museum. Volume 6