Ancilla eburnea is a species of sea snail, a marine gastropod mollusk in the family Ancillariidae, the olives.
Description The shell attains a length of 17 mm.
(Original description in French) This small shell is ivory-white, with a yellowish tint. It is oval in shape and pointed at the apex, with its spire whorls fused together. The shell is entirely smooth. At its base, a narrow, depressed double furrow leads obliquely to the angle of the right margin, where it forms a small, rather prominent denticle.
The spire is elongated, while the aperture is quite short and narrow, only slightly flared at the base. The columellar fold is a brighter white, small, and striated. A calcareous deposit can be seen on the columella at the posterior angle of the aperture. The interior of the shell is a very pale tawny color.Deshayes G.P. (1830–1832). Encyclopédie méthodique ou par ordre de matières. Histoire naturelle des Vers et Mollusques. Vol. 2, part 1: i–vi, 1–256 [Livraison 101, 1 Feb 1830; part 2: 1–144 [Livraison 101, 1 Feb. 1830], 145–594 [Livraison 102, 29 Sept. 1832]. Vol. 3: 595–1152]
Distribution This species occurs in the Red Sea and off Yemen.
References
Kilburn R.N. (1981). Revision of the genus Ancilla Lamarck, 1799 (Mollusca: Olividae: Ancillinae). Annals of the Natal Museum. 24(2): 349-463.
External links Syntype at MNHN, Paris Sowerby G.B. II (1859). Monograph of the genus Ancillaria. In: G.B. Sowerby II (ed.), Thesaurus Conchyliorum, vol. 3(19): 57–67, pl. 211–214. London, privately published