Zebinella sigmifer is a species of small sea snail, a marine gastropod mollusk or micromollusk in the family Rissoinidae.MolluscaBase eds. (2023). MolluscaBase. Zebinella sigmifer (Mörch, 1876). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1023085 on 2023-10-26 Its original name was Rissoina sigmifer Mörch.
Description The length of the shell attains 11 mm, its diameter is 4.75 mm.
(Original description in Latin) The shell has the same general form as Zebinella albida, but is solid and whitish. The whorls are convex. The axial ribs are strong, continuous, and obliquely, slightly arched, numbering about 25 on the body whorl, and becoming narrower toward the columella; everywhere they are crossed by very close‑set, fine spiral lirae. The suture is narrow and is bordered by a distinct marginal line. The aperture is effuse anteriorly, and the middle portion of the outer lip is slightly angulate, bearing externally three closely spaced riblets. Mörch, O. A. L. (1876). Synopsis molluscorum marinorum Indiarum occidentalium imprimis insularum danicarum. Malakozoologische Blätter. 23: 45-58, 87-143
Distribution This marine species occurs off The Bahamas.
References
Faber, M. J. (2015). Three new species of Zebinella from the Central Indo-Pacific (Gastropoda: Rissoinidae). Miscellanea Malacologica. 6: 93-97.