Abstract
While discussing the problems related to multiple original spellings or symprotographs (Dubois 2010: 14) of nomina in zootaxonomy, David et al. (2009: 5) stated that one of the generic bird nomina created by Vieillot (1816) had been so under two different spellings: Thriothorus (p. 45) and Thryothorus (p. 70). They pointed to the fact that subsequently Vieillot (1819: 55) had only used the spelling Thryothorus for this nomen, and thus had acted as a first-reviser between the two spellings under the new Rule introduced in Article 24.2.4 of the last edition of the Code (Anonymous 1999), a nomenclatural act designated by Dubois (2010: 15) as an internal first-reviser action or IFRA.
References
Anonymous [International Commission on Zoological Nomenclature] (1999) International code of zoological nomenclature. Fourth edition. International Trust for zoological Nomenclature, London, i–xxix + 1–306.
David, N., Dickinson, E.C. & Gregory, S.M.S. (2009) Contributions to a list of First Reviser actions: ornithology. Zootaxa, 2085, 1–24.
Dubois, A. (2010) Retroactive changes should be introduced in the Code only with great care: problems related to the spellings of nomina. Zootaxa, 2426, 1–42.
Linnaeus, C. (1758) Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Editio decima, reformata. Tomus I. Holmiae, Laurentii Salvii, [i–iv] + 1–824.
Linnaeus, C. (1894) Systema Naturae. Regnum animale. Editio decima, 1758, Cura Societatis Zoologicae Germanicae iterum edita. Lipsiae, Guilielmi Engelmann, [i–iv] + 1–824 + i–iv.
Vieillot, L.P. (1816) Analyse d’une nouvelle ornithologie élémentaire. Paris, Deterville, [i] + 1–70.
Vieillot, L. (1819) Thryothore, Thryothorus. In: J. J. Virey, (Ed.), Nouveau Dictionnaire d’Histoire naturelle, 34 (THE–TSU), 55–61.
Vieillot, L.P. (1883) Analyse d’une nouvelle ornithologie élémentaire. Edited by Howard Saunders for the Willughby Society. London, Taylor & Francis, i–iv + [i] + 1–70.