(syn. Ceyx Ϯ Southern Silvery Kingfisher C. argentatus) Gr. αργυρος arguros silver < αργος argos shining, glistening; genus Ceyx de Lacépède, 1799, kingfisher; "The last group has a long, narrow black bill, but the coloration is quite peculiar. The head is black, with silvery-white spots at the sides, the dorsal tract shining silvery-white, the upper-surface otherwise black save a few silver spots on the wing-coverts. The under coloration is just as strange, the white throat being succeeded by a blue-black under-surface. For this beautiful group I propose Argyroceyx, gen. nov., the type being Ceyx argentata Tweeddale, while Ceyx flumenicola Steere seems only subspecifically distinct." (Mathews 1918). Var. Argyronyx.