by William Swainson

“ Bill eight-tenths in length from the gape; general colour of the bird olive-green, becoming nearly white on the under part, and on the transverse stripes on each side the neck, front and temples, where there are also obscure bands of black; crown with a concealed crest, which is vivid crimson at the base and blackish at the tips; inner margin of the covers, quills and tail blackish; inner covers yellowish; chin, neck and breast banded with blackish lines, which are broken into spots and stripes beyond.
Inhabits Brazil, but is very rare. ”

“ Bill short, very straight, base trigonal, beyond attenuated to a very fine point; upper mandible above rounded, both entire. Nostrils basal, naked, partially covered by a membrane; aperture linear, near the margin of the bill. Feet short, strong, a little longer than the middle toe; anterior toes three, the outer connected, the inner cleft; hind toe strong.
Specific Character.
O. suprà olivaceo-viridis, subtùs flavescente-albus, maculis nigrescentibus; capite cristâ coccineâ incumbente ”