Hypermastus pusillus is a species of sea snail, a marine gastropod mollusk in the family Eulimidae.Bouchet, P. (2014). Hypermastus pusillus (G. B. Sowerby I, 1834). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=566087 on 2014-12-21Petit R.E. (2009) George Brettingham Sowerby, I, II & III: their conchological publications and molluscan taxa. Zootaxa 2189: 1–218.
Description (Original description) The shell is straight and subulate in outline, thin and translucent, with a pure white, almost transparent surface. The whorls are only slightly convex. The aperture is elongate-oval in shape and tapers to a point posteriorly.
References
External links To World Register of Marine Species