Argyroceyx

(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.

Search for more names on the Key to Scientific Names in Ornithology by James A. Jobling.
Recommended citation
Jobling, J. A. (2019). Key to Scientific Names in Ornithology. In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.) (2019). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from www.hbw.com on 19 January 2019).