Mangilia hermione Dall, 1919 Pleurotomella hermione is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.

The first two remaining intact whorls (the first is eroded) are axial]y sculptured with about 20 close-set obliquely protractive rounded ribs cut by sharp grooves which make of the interspaces rounded nodules, the second row from the preceding suture being more prominent and forming a shoulder to the whorl.

Other spiral sculpture on the body whorl is of fine equal threads with narrower interspaces, extending from the shoulder to the siphonal canal.

The anal sulcus is wide and deep, its deepest part at the shoulder, with no subsutural callus.

The outer lip is thin, sharp and prominently arcuately produced.