[1] This genus was originally described by Carpenter off the west coast of the United States.

The genus Mitrolumna Bucquoy, Dautzenberg & Dollfus, 1883 is currently treated as a synonym or subgenus of Mitromorpha, but is available for the Eastern Atlantic and Mediterranean species, if these are considered to form a distinct radiation.

[7][8] The same genus is also used for a number of extinct species: The small shells have an elongate fusiform shape.

The outer lip is acute, smooth within, occasionally scarcely sinuated posteriorly.

The columella is straight, bearing a number of short plicae or teeth upon it in the middle and slightly transversely lirate.