Printed on the plate
“The Earl of Derby's Parrakeet”
Paleornis Derbianus
Engraved caption: PALÆORNIS DERBIANUS, Fraser
Modern identification
Psittacula derbiana
- Certain
- Checked against the engraved caption
- Old World Parrots · Psittaculidae
Why
Fraser's Palaeornis derbianus = Derbyan Parakeet: violet-blue crown, black chin, vinous underparts.
Sources
List of Plates (vol. VI); engraved caption on the leaf; Gould's text; Kansas catalogue; the plate
Who made the plate
J. Gould & H. C. Richter, del et lith.Hullmandel & Walton, Imp
- John Gould drew and lithographed
- Henry Constantine Richter drew and lithographed
- Hullmandel & Walton printed
As the credit line gives it. More on who made these plates.