Direction 57 Addition to the Official List of Specific Names in Zoology (a) of the specific names of Forty-seven species belonging to the classes Cyclostomata, Pisces, Amphibia and Reptilia, each of which is the type species of a genus, the name of which was placed on the Official List of Generic Names in Zoology in the period up to the end of 1936 and (B) of the specific name of one species of the class Amphibia which is currently treated as a senior Subjective synonym of the name of such a species

Published in Opinions and declarations rendered by the International Commission on Zoological Nomenclature, in 1956, in volume 1D, issue D.18, pages 365-388

Date published:1956-12-20