The white teleoconch consists of 2 to 2.5 whorls and the shell is about 1.5 mm high. The protoconch measuring 0.21 mm in height is of quite different shape and of translucent brown coloration as had already been noted by Abbott (1974). The embryonic shell is allmost smooth, well rounded and measures only 0.08 mm in width. Its transition into the larval shell after completion of about three quarters of a whorl is marked by the onset of axial ribs that dominate the first larval whorl. About 20 of these are present here and they are sinuous reflecting the position of a sinus in the subsutural outer lip of the veliger shell. In the second larval whorl spiral ridges that had appeared during the course of the first larval whorl become as strong as the axial ribs, thus forming a reticulate pattern with them. The distance between these spiral cords is unequal. Two cords on the base of the subsutural lobe that forms the top of the apertural projection are close to each other and form a ribbon-like band. The change from the larval shell into the teleoconch is drastic and occurs with a little more than three whorls completed. The larval shell of the pediveliger is provided with a long projection of the apertural lip as is commonly found among the planktotrophic veligers of Cerithioidea (Bandel 1993). The fully grown shell consists of two or a little more postlarval whorls which are sculptured by acute spiral ribs. Three of these ribs are more prominent others between them are smaller. The number of ribs increases with the number of whorls. The base is covered by strong ribs and the umbilicus is partly covered by the thickened inner lip.