Antiguraleus murrheus is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.

The sculpture consists of longitudinal ribs, stronger on the earlier whorls, weaker towards the body whorl, which has about fifteen ribs extending to the suture.

These ribs are crossed by faint spirals, the posterior or peripheral being the strongest, two on the second whorl, three above the aperture, a fourth on the body whorl, beyond which the longitudinal ribs only persist a short distance.

The aperture shows a conspicuous sinus in the infrasutural tabulation, but there is no anal fasciole.

[2] This marine species occurs off Northland east coast to Cook Strait, New Zealand