Rhombus Walbaum [J. J.] (ex Klein) 1792:582 Masc. Pleuronectes rhombus Linnaeus 1758. Not available, published in a part of work rejected for nomenclatural purposes in Opinion 21 (1938). Based on Klein 1744:30 [ref. 30141]. Also objectively invalid; but apparaently not preoccupied by Rhombus da Costa 1776 in Mollusca (non-binomial). •In the synonymy of Scophthalmus Rafinesque 1810 -- (Norman 1934:262 [ref. 6893]). 1°Homonym. Current status: Synonym of Scophthalmus Rafinesque 1810. Scophthalmidae.