Sterna alba Sparrman, Mus. Carlsonianum, fasc. I, pl. 11, 1786.= Gygis alba alba Sparrman, 1786
Holotype ? : Adult, Atlantic Ocean (signed : New Zealand, errore !). No date. Sparrman leg. (Ex. Mus. Carlsonianum.) No. 53. - Measurements of type : wing : 245 mm.; tail : 108 mm.; culmen : 41 mm.Click on the picture for enlargement.