Pericrocotus divaricatus -- Ashy Minivet. Alternate name on piece: Pericrocotus cinereus [Grey pericrocotus] Layout drawing, birds well finished; sketch of beak detail; small triangle (used as symbol?); "Black and white species"; [Curtis] 11-4875--Rhododendron keysii. Artist's name(s): Gould, John; Richter, Henry Constantine.