Pinguinus impennis -- Great Auk; grand pingouin. Alternate name on piece: Alca impennios [Great auk] Drawing on tissue, based on tracing of Gould item 1847. Leg of principal bird further changed; head of one of 2 background birds changed as called for in Gould item 1847; birds in flight omitted; high cliffs and flock of distant birds added; marks at foot to indicate position of cut-lines; cliffs and distant birds omitted in published plate. Reversed on the stone. Artist's name(s): Gould, John; Hart, William Matthew.