PLAKOBRANCHIDAE J. E. Gray, 1840

Coan, Eugene V., Pacaud, Jean-Michel & Kabat, Alan R., 2024, Gérard-Paul Deshayes (1796 - 1875) and his taxa, Geodiversitas 46 (16), pp. 553-930 : 675

Family PLAKOBRANCHIDAE J. E. Gray, 1840

Tridachia – Deshayes, 1857f: 141-142. Genus without included species. Original list supplied byMörch (1863: 40-41). — Type species (SD MacFarland, 1924: 405): Elysia schrammi Mörch, 1863 , ex Deshayes ms, now regarded as a synonym of Elysia crispata Mörch, 1863 . — Current status: genus a synonym of Elysia Risso, 1818 ( Krug et al. 2016: 17). Thridachia P. Fischer, 1883 , is an unjustified emendation.

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schrammi , Elysia – Mörch, 1863: 41, ex Deshayes ms. Deshayes, 1857f) provided a minimal description of this species, saying that he intended to name it in honor of [Alphonse] Schramm, but he did not give a Latinized name. Thus, the species dates from Mörch (1863) based on the description given by Deshayes, 1857f). — Type age: Recent. — Current status: synonym of Elysia crispata Mörch, 1863 . ( Krug et al. 2016: 17).