1.75mm. Fragile, oblong-ovate, selenizone well above periphery. Umbilicus broad and deep. Protoconch planorboid. Fine reticulate sculpture. Translucent white. Habitat: offshore and deep water. Distribution: Perzian Gulf, Gulf of Oman.

Original description: "S. testa parva, profunde umbilicata, oblongo-ovata, undique alba, tenuissime delicata, anfractibus 5, quorum apicalis parvus, globularis, hyalinus, caeteris ad medium bicarinatis, suturis compressis, arctissime omnino longitudinaliter liratulis, liris supra carinas curvatis, infra rectis, ultimo anfractu infra, usque ad basim, obscure spiraliter striato, inter carinas sinu angusto, sed longo, apertura rotundata, labro ad sinum paullum incrassato, margine columellari supra umbilicum extenso." MELVILL, 1904: 160. Tab. 10, fig. 5.
Description: Shell minute, globose, thin, fragile, subdiaphanous. Spiral whorls rapidly expanding, body whorl forms major part of shell; sutures incised, submerged. Protoconch planorbid, convexly depressed, of one smooth whorl, followed by another half whorl with more-or-less evenly spaced thin, curved radial threads. On remaining 2,75 whorls broad, concavely excavated selenizone on periphery of whorls, set off by sharp, produced edges, which give the periphery a carinated appearance; selenizone sculptured with regular, curved riblets; slit long, extends to outer lip. On whorls above selenizone numerous prominent, sharp, curved radial threads, and in interspaces about twelve thin spiral lirae; below selenizone whorls mostly absorbed in subsequent ones. Base of body whorl rounded, deeply and rather narrowly umbilicated, reticulately sculptured with numerous spiral and radial sharp costae of almost equal strength. Aperture ovate, flaring over base; paries fused to body whorl; columella reflected over umbilicus. Color white. Operculum and soft parts not known.
Habitat: Not known.

Gulf of Aqaba: Eilat, harbor, 1969, dredged in 80 m, 6 sp. (HUJ), opposite electric power station, 9. 2. 1970, bottom grab in 320 m, leg. D. ZALCMAN, 1 sp. (IY 5012); off Nuweiba el Tarabeen, St. 39, 8. 10. 1969, triangular dredge, 75 — 80 m, leg. Ch. LEWIN-SOHN, 1 sp. (IY 5017).
Remarks: — This is the first record of this species in the Red Sea. In the BLOK collection, Hebrew University of Jerusalem, there is a specimen of this species collected in the Gulf of Oman, MELVILL'S type locality, at a depth of 156 fathoms (HUJ — BLOK 4924).