Lencus

(syn. Larus Ϯ Great Black-backed Gull L. marinus) Gr. λευκος leukos  white; "3. Larus marinus, glaucus, fuscus.   ...  3. Möve. Lencus. (Lar. marinus, glaucus et fuscus). (Goeland des aut. franc.)  ...  Ch[arakter]. Möven nit langem, starkem, etwas walzenförmigem Schnabel; im Alter weiß gediedert, meist mit schwarzem Rücken" (Kaup 1829).  Var. Leucos, Leucus.

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 18 January 2019).