Subfamily AMPHINOMINAE Savigny in Lamarck, 1818

Amphinomae Savigny in Lamarck,1818: 327.— Savigny 1822: 14, 57.

Amphinomidae – Baird 1868: 215. — M’Intosh 1885: 6. — Chamberlin 1919: 23. — Fauchald 1977: 100. — Kudenov 1993: 95.

Amphinominae – Borda et al. 2015: 330.

TYPE GENUS. — Amphinome Bruguière, 1789 .

DIAGNOSIS (modified from Borda et al. 2015). — Amphinomids with caruncle variable, rarely absent. Branchiae with single or double stems with filaments digitate; simple cirriform branchiae absent. Anus dorsoterminal on last chaetiger.

As indicated in the key, amphinomin genera are separated after several diagnostic features such as the type of caruncle, dorsal development of first chaetiger, presence of branchiae along body, alignment of neuropodia, and presence of special chaetae such as hooks or thin furcates.