Subspecies of <i>Alcedo quadribrachys</i>, the <b>Shining Blue Kingfisher</b>; <i>A. q. quadribrachys</i> (top) and <i>A. q. guentheri</i> (bottom)
<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>
1892
Catalogue of the birds in the British Museum. Volume 17