See text Cythara is a genus of sea snails, marine gastropod mollusks in the family Mangeliidae.

[1] Hedley (1922: 260) and Powell (1966: 109) summarized the arguments against using the earlier name Cythara Schumacher, 1817, with much uncertainty regarding the identity of its type species, against Eucythara Fischer, 1883.

The name has also been used by European authors (e.g. Knudsen, 1952; Nordsieck, 1977) for species classified now in Mangelia Risso, 1826.

The shell is fusiform, smooth and longitudinally plicated or rihbed.

The outer lip is margined, denticulate, or striated internally.