One shell from Station 3 (Shark Bay) is in its starting whorls white, while the lower whorls are black. The first 2½ embryonic whorls are not pointed, a bit angulated, the axial sculpture is unclear; the following eight whorls have two rows of tubercles, gradually a third cord develops on the lower whorls, between the first two; the last whorl has six threads; the aperture has an acute angle on the upper part. Height 4 mm, diameter 1.3 mm.

Diagnosis
Holotype height 4.0 mm. Shell pupoid. The teleoconch has seven flat whorls, which have three tubercled spiral cords; the second cord appears later along the spire, and is visible on the sixth whorl and well developed only on the last one. A very fine suprasutural cord also present. The last whorl has a fourth tubercled cord. The base has two spiral cords: the first is tubercled, while the second is almost smooth. On the peristome, additional spiral cords appear between the main ones. Paucispiral apex of two whorls; the first whorl has a keel on the periphery, while on the second, axial riblets are also present. Teleoconch dark brown, protoconch and the first two whorls white.

Western Australia