Pterodroma heraldica paschae Lönnberg, Nat. Hist. of Juan Fernandez and Easter Island, vol. III, Upsala 1920, p. 23.= Pterodroma arminjoniana heraldica Salvin, 1888
Holotype ? : Male ad., Motu Nui, Easter Island. 1. VII. 1917. K. Bäckström leg. No. 689. - Measurements of type : wing : 275 mm.; tail : 119 mm.; culmen : 27,7 mm.; tarsus : 33 mm.Click on the picture for enlargement.