Notocytharella striosa is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.

The slender shell is dingy white, with a rather indistinct narrow central brown band on the body whorl.

It contains 10-12 slender longitudinal ribs, crossed by close elevated revolving lines.

The outer lip is rather sharp on the edge but thickened behind it by a stout rib.

[2] This marine species occurs off Baja California, Mexico.