Black-tailed Trogon. Alternate name on piece: Harpactes kasumba [Kasumba trogon] Fully colored drawing, still requiring a little tightening up. Reversed on the stone. Previously cited as GS29 or 29GS, and so marked on reverse. Artist's name(s): Gould, John; Richter, Henry Constantine. The combination of black ink and non-standard colors in this and Gould item 2293 give them something of a poster-like appearance; their function in the process is not clear; they are two of a very few originals in the collection without a Gould studio/Sotheran provenance.