ICZN. (1954). Opinion 200. Validation, under the Plenary Powers, of the accustomed 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: 239-266.
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ICZN
1954
Opinion 200. Validation, under the Plenary Powers, of the accustomed 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