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Taxon profile

species

Cerithiopsis matara Dall, 1889

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  family Cerithiopsidae »  genus Cerithiopsis

Description

Shell pale brown, straight-sided, conical, with sixteen compact whorls. Nucleus, beginning glassy, smooth, and saccular, in the second whorl becomes strongly transversely ribbed and swollen; the next whorl is a little smaller than the second, and takes on the normal characters of the shell; sculpture consisting of two principal nodulated spirals with a smaller undulated thread between them, and a still smaller waved thread in front of and marking the suture; the transverse sculpture consists of concave waves (20-23) under the spirals, which cross the whorls but are not conspicuous; base smooth or radiately striate, somewhat concave, bounded by a small double keel of two threads which are covered up in the suture; canal strong, short, wide, twisted; aperture squarish, small; sides of the shell flattened, the sutures not conspicuous. Max. length of shell, 9.75 mm; of last whorl, 2.5 mm; max. lat. of shell, 2.25 mm.
Source: Dall, 1889. Reports on the results of dredgings, under the supervision of Alexander Agassiz, in the Gulf of Mexico (1877-78) and in the Caribbean Sea (1879-80), by the U. S. Coast Survey Steamer 'Blake'. (Original description)

Interchangeable taxa

This shell was found mixed with Varicopeza crystallina from which it was easily picked out, owing to its straighter sides, brown color, less rounded base, and turbanlike nucleus.

Distribution

Barbados
Author: Jan Delsing

Links and literature

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Cerithiopsis matara Dall, 1889]
Data retrieved on: 2 May 2017

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