Alaba incerta explained

Alaba incerta is a species of sea snail, a marine gastropod mollusk in the family Litiopidae.

Description

(Described as Rissoa melanura) The shell is conic and turrited. It is white and subtransparent with a black apex. It is nearly smooth and is shining. It features some spiral striae that are distinct anteriorly and on the lower part of the whorls of the spire, but obsolete on the upper part. The apex is acute, and the spire has nearly rectilinear outlines. There are eight quite convex whorls with a rather deep suture. The aperture is scarcely effuse, and the outer lip is thin and well-excurved below the middle. The columella is straight and subtruncate.^[1]

Distribution

This species occurs in the Caribbean Sea and off the Lesser Antilles.

Description

The maximum recorded shell length is 10 mm.^[2]

Habitat

Minimum recorded depth is 0 m.^[2] Maximum recorded depth is 40 m.^[2]

References

• Hodgson, C. J.; Hilburn, D. J. . An annotated checklist of the Coccoidea of Bermuda . Florida Entomologist . 1991 . 74 . 1 . 133–146. 10.2307/3495250 . 3495250 .
• Rosenberg, G., F. Moretzsohn, and E. F. García. 2009. Gastropoda (Mollusca) of the Gulf of Mexico, Pp. 579–699 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Biodiversity. Texas A&M Press, College Station, Texas.

External links

• Adams . C.B. . Specierum novarum conchyliorum, in Jamaica repertorum, synopsis . Proceedings of the Boston Society of Natural History. . 1845 . 2 . 1–17 . 10 July 2024.

Notes and References

1. Adams . C.B. . Descriptions of supposed new species of marine shells, which inhabit Jamaica . Contributions to Conchology. . 1850 . 7 . 109–123 . 10 July 2024.
2. Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". PLOS One 5(1): e8776. .