Direction 60 Designation under the Plenary Powers of a type species for the genus Scorpio Linnaeus, 1758 (class Arachnida) in harmony with accustomed usage and suppression under the same Powers of the specific name europaeus Linnaeus, 1758, as published in the combination Scorpio Europaeus (amendment of a ruling given in Opinion 104)
Published in Opinions and declarations rendered by the International Commission on Zoological Nomenclature, in 1957, in volume 1E, pages 1
Date published:1957