International Commission on Zoological Nomenclature:
OPINIONS and DIRECTIONS

taxa names:

If

Ifionyx Krøyer 1846 (?), in Gaimard, Voy. Comm. Sci. Nord ‘Recherche’ (Zool.): pl. 42 (suppressed under the plenary power for the purposes of the Principle of Priority but not for those of the Principle of Homonymy). Opinion 733