Shell small, up to 11.9 mm in length (holotype). Spire high with a protoconch of 1.25 to 1.5 whorls and 5 spinose teleoconch whorls. Protoconch whorls smooth, weakly keeled, ending with sharp, erect terminal varix. Suture weakly impressed. First teleoconch whorls with 7 or 8 axial lamellae, second and third with 8 varices, fourth with 7. Last teleoconch whorl with 6 low, spinose varices. Other axial sculpture consisting of fine growth striae and 3-5 frilly lamellae between each pair of varices. Varices of last teleoconch whorl with 4 short, acute spines, and 6 or 7 open, short spinelets between spines. Spiral sculpture of last teleoconch whorl of 4 or 5 primary, and 6 or 7 secondary squamous cords interconnecting varicial spines. Shoulder with 2 or 3 low spiral threads. Former whorls with 3 spiral cords. Aperture roundly-ovate. Columellar lip smooth, rim flaring, adherent at adapical extremity. Anal notch obsolete. Outer lip smooth with 3 low and shallow nodes within. Siphonal canal moderately long, straight, open with one short open spine. Whitish with irregularly spaced small yellow or orange blotches. Siphonal canal light pink in the holotype only.

Muricopsis (Murexsul) metivieri Houart, 1988 from New Caledonia has a more globose shell with different spiral sculpture consisting of 7 or 8 equal-sized cords, ending as large and broadly open varicial spines. M. charcoti is smaller and quite different (see description is this paper). M. interserratus (Sowerby, 1879) (-Murexsul zonatus Hayashi & Habe, 1965) has a twice smaller, rounded protoconch, higher spiral cords, fewer spiral threads, and strongly adapically bent shoulder spines. M. multispinosus (Sowerby, 1904)(= Murex azami Kuroda, 1929) is almost twice larger, more spinose with a very long siphonal canal, different spiral sculpture and a smaller, more rounded protoconch. M. tokubeii (Nakamigawa & Habe, 1964) is larger with 6 long, open spines on the varices of last teleoconch whorl, 4 or 5 shoulder threads, and twice smaller rounded protoconch.

Coral Sea. Chesterfields Reefs.