ICZN. (1954). Opinion 200. Validation, under the Plenary Powers, of the accumstomed usage of the generic names Tethys Linnaeus, 1767, and Aplysia Linnaeus, 1767 (Class Gastropoda). Opinions and declarations rendered by the International Commission on Zoological Nomenclature. 3: 241-265. [Issued 27th January, 1954].
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ICZN
1954
Opinion 200. Validation, under the Plenary Powers, of the accumstomed usage of the generic names <i>Tethys</i> Linnaeus, 1767, and <i>Aplysia</i> Linnaeus, 1767 (Class Gastropoda)
Opinions and declarations rendered by the International Commission on Zoological Nomenclature