by William Swainson, Zoological Illustrations Series II… (1829)
“ A closer affinity therefore between Papilio and Leilus cannot possibly be imagined: while its remarkably hairy front, points out its analogy, as an aberrant type in its own genus, to Chlorisses, among insects, and Dasycephala among birds. So true it is that the natural system "illuminates with a flood of light" every supposed anomaly, and reconciles facts apparently the most inexplicable. ”
