Mĕlanthus, i, m.,  =  Μέλανθος. 
- I.  A  river in Sarmatia, Ov. P. 4, 10, 54.
- II.  One of the seamen whom Bacchus changed into dolphins, Ov. M. 3, 617.
- III.  The father of the Athenian king Codrus, Vell. 1, 2, 1.
 Hence, Mĕlanthēus (quadrisyl.), a, um, adj., of or belonging to a Melanthus: caedes, Ov. Ib. 625.