Thalurania furcata -- Fork-tailed Woodnymph. Alternate name on piece: Thalurania venusta 2 notes on form; [Curtis] 12-4919--Odontoglossum hastilabrum; large letter G. Artist's name(s): Gould, John; Richter, Henry Constantine. Birds in rather finished form by Richter (erasures indicate probable base drawing by Gould with color).