Onychoprion anaethetus -- Bridled Tern, Charrán embridado, Sterne bridée. Alternate name on piece: Onychophrion panaya [Panayan tern] Good layout sketch. Artist's name(s): Gould, John; Richter, Henry Constantine. What remains on the paper after extensive erasure is heavy, irregular defining lines with light detailing by Richter.