(syn. Melanitta Ϯ Common Scoter M. nigra) Gr. οιδημα oidēma  swelling; "a. Trachea of the male, with a capsular enlargement at the bronchial extremity.  The limbs are short, and placed far behind.  1. Hind toe bordered with a membrane.  Base of the bill enlarged.   201. OIDEMIA *.  Scoter.  Bill swollen at the base, above the nostrils.  Anas nigra and fusca.   ...   *Oιδημα  tumor." (Fleming 1822); "Oidemia Fleming, Philos. Zoöl., 2, 1822, p. 260. Type, by subsequent designation, Anas nigra Linné. (Gray, List. Gen. Bds., 1840, p. 74.)" (Peters 1931, I, 180).   Var. Oedemia, Oidema.

Search for more names on the Key to Scientific Names in Ornithology by James A. Jobling.
Recommended citation
Jobling, J. A. (2020). Key to Scientific Names in Ornithology. In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.) (2020). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from www.hbw.com on 25 February 2020).