Aclis angulata

Aclis angulata
Shell of Aclis angulata (specimen at the Natural History Museum, London)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Littorinimorpha
Family:	Eulimidae
Genus:	Aclis
Species:	A. angulata
Binomial name
Aclis angulata E. A. Smith, 1890

Aclis angulata is a species of sea snail, a marine gastropod mollusk in the family Eulimidae.^[1]

Homonymy

Junior homonym of Aclis angulata P. Fischer, 1869.

Description

The length of the shell attains 2 mm (0.079 in), and its diameter is 0.75 mm (0.030 in).^{[citation needed]}

The shell is small, elongate, and turreted, with a smooth white surface and composed of six whorls. The first two whorls are large, convex, and smooth, transitioning to subsequent whorls that are obliquely sloping above, sharply carinate-angular at the midsection, and constricted below the angle. These later whorls are adorned with prominently elevated, closely spaced, and regular growth lines.^[2]

The body whorl exhibits a very obtusely rounded-angular profile at the periphery. The aperture is oblique and irregularly ovate, with a continuous, non-thickened peristome that is subtly sinuate above the angle near the suture.^[2]

This little species is remarkable for its angular whorls, the regular close-set raised lines of growth, and large apex.^[2]

Distribution

This species has occurred in the Atlantic Ocean off Saint Helena.^[1]

References

1. WoRMS. "Aclis angulata E. A. Smith, 1890". World Register of Marine Species. Retrieved 2024-02-27.
2. Smith, E. A. (1890). "Report on the marine molluscan fauna of the island of St. Helena". Proceedings of the Zoological Society of London. 1890 (2): 247–317.