Amaea optata
(Jousseaume, 1912)
Description:
Dimensions range from 3.5 mm - 3.5 mm high and 1.5 mm wide.
Width to height ratio: 0.43:1 ~ 0.43:1
Shell: elongated, slender, distinctly conical, with a rounded base; minute. Exterior colour dull white. About 8 whorls, convex; protoconch with ~3 whorls ; teleoconch with ~5 whorls. Suture deep. Imperforate. Costae are low, thin. Intercostal spaces with fine, closely spaced, regular, and fairly regular spiral striations creating a reticulated pattern with the costae. Columella edge, somewhat thickened. Aperture round; peristome slightly thickened, nearly touching the base of the previous whorl.
Distribution:
Aden.
Habitat:
12 m.
Etymology:
[latin] from optatus = desired, wished or longed for.
Type Material:
Holotype: MNHN 4367 for Amaea optata (Jousseaume, 1912) - Type Locality: Aden, 12 m. [Brown, L. & Neville, B.D., 2015]
Jousseaume, F. (1912). Plate VII. Fig. 48.
Alexania
Distribution
as listed in source literature
Jousseaume, F. (1912).
Plate VII. Fig. 48.
Alexania
pp: 225.
Small, imperforate, fairly solid shell, whitish, elongated-conical, latticed with numerous small varices and fine filiform striations.
Whorls: 8, convex, growing slowly and regularly; the first three smooth and slightly glossy, the following ones regularly ornamented with numerous slightly curved varices, which are finely striated. Aperture round, slightly angular anteriorly and posteriorly, with a somewhat thickened peristome, nearly touching the base of the penultimate whorl.
Length: 3.5 mm; diameter: 1.5 mm.
Habitat: Aden.
Kaicher, S.D. (1981).
