Psittacula himalayana -- Slaty-headed Parakeet. Alternate name on piece: Palaeornis schisticeps [Slaty-headed parrakeet] Layout drawing, color added, birds fairly closely finished; note on color, another on form; [Curtis] 7-4566 -- Thibaudia macrantha. Artist's name(s): Gould, John; Richter, Henry Constantine.