Branta leucopsis -- Barnacle Goose; bernache nonnette. Alternate name on piece: Bernicula leucopsis [Bernicle goose] Layout charcoal sketch, the principal figure with crude added pencil lines, apparently by Gould; quick sketch of body at top; 2 notes on background. Title in pencil by Sotheran, bookseller. Artist's name(s): Wolf, Joseph; Richter, Henry Constantine.