Geophaps plumifera leucogaster -- Spinifex Pigeon. Alternate name on piece: Lophophaps leucogasta [White-bellied bronzewing] Very finished watercolor, with extensive line corrections and extensive notes on form, color and measurements of the birds. Apparently initially in landscape format but trimmed and adjusted to fit a portrait format ("plate upright"). Artist's name(s): Gould, John; Richter, Henry Constantine.