Slender fusiform shell with less curved whorls, but the main characteristic is the subsutural cord, which gradually slopes down from the suture like a continuous roof tile, mostly rounded, but sometimes slightly pointed. Strebel believed that this form was more common in more northern localities, e.g. Senegal and Ghana, while the type form was predominantly present is southern areas (Cameroon, Gabon, Angola, ...). After a careful study of hundreds of specimens in the MNHN I can confirm both forms occur in the same localities, but apart from a few exceptions, the type form indeed seems to be restricted to the south of the geographic range (from Congo to Angola).
Measurements: 20 -29.5 mm.
Habitat: in muddy or sandy bottom, depth: 7-50 m.
Geographic range: Goree, Senegal (Strebel), Grand Bassam, Ivory Coast (Strebel), off Abidjan, Ivory Coast (CFN, MNHN), Accra, Ghana (Strebel), Mudrachmi Bay, Ghana (CFN), Grand Popo, Benin (Strebel), Setta Kama, Gabon (Strebel), Pointe-Noire, Congo-Brazzaville (CFN, MNHN), Banana, Congo (CFN), Landana, Angola (Strebel), Barra do Dande and Barra do Bengo, Prov. Bengo, Angola (CFN, MNHN)