Shell small for the genus, from 9 to 10.2 mm. in length, elongate and fusiform, aperture ovate and broad. Columellar lip smooth, completely adherent to the shell. No visible anal notch. Outer lip and inner side of outer lip smooth. Spire high and acute, consisting of 1,5 to 2 glossy and conical nuclear whorls and 4 to 5 elongate teleoconch whorls. Suture impressed. First teleoconch whorl bearing 8 to 9 sharp axial lamellae, second 10 to 11 and last whorl 8. No other axial sculpture. Spiral sculpture consisting of numerous microscopical striae not always visible ; otherwise smooth. In very few specimens, additional spiral sculpture consists of 5 to 6 smooth cords, most apparent on the axial lamellae and giving them a frilly appearance. Siphonal canal smooth, moderately long and broadly open. Color uniformly milky or glossy white, sometimes light brown.
DIMENSIONS OF THE H0L0TYPE: 10.2 x 4.2 mm.

This new species was considered by Barnard (1959:202) as a juvenile of Trophon acceptans. However, in 1969 (638), he regarded them as separate but needing more study. It is not comparable with any other South African Trophon species. Trophon declinans Watson, 1883, from the Kerguelen Islands, a related species, is large (type: 20 mm.) for the same number of teleoconch whorls; it has 2 smooth globulose nuclear whorls and the last whorl bears 15 to 20 axial lamellae instead of 8 for the new species. Trophon macquariensis Powell, 1957, is also a large shell of 22 mm. with 4,5 teleoconch whorls and 18 axial lamellae on the last whorl.

South-Africa: From Cape St Blaize (holotype and Barnard, 1959) to Transkei (Port Grosvernor), mostly in sand, from 95 to 500 meters depth.