Coracias temminckii -- Purple-winged Roller, Sulawesi Roller. Alternate name on piece: Coracias temmincki [Temminck's roller] Layout sketch in soft pencil or charcoal. In the published plate the perch and the head of the upper bird have been changed, and a frog (Hyla reinwardtii) introduced, which both birds are holding. Reversed on the stone. Artist's name(s): Gould, John; Richter, Henry Constantine.