See text Brachycythara is a genus of very small predatory sea snails, marine gastropod mollusks in the family Mangeliidae.

The protoconch is small-tipped, consisting of about 3 very rapidly enlarging whorls.

The body whorl is sculptured with crowded, protractive, curved, axial riblets.

Specimens with a perfectly formed outer lip show a low denticle below the notch well within the aperture.

Brachycythara is a genus of small, biconic turrids having a very rapidly enlarging axially sculptured protoconch, non-varicose outer lip, and no anterior canal.