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species

Cerithiopsis guanacastensis A. M. Strong & J. G. Hertlein, 1951

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

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Cerithiopsis guanacastensis

Author: Hertlein & Strong

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Description

Shell regularly elongate-conic, dark brown, with the top of the tubercles paler; nuclear whorls broken with only a portion of the last whorl remaining which is smooth except for a sharp central keel; postnuclear whorls 11, sculptured with 3 spiral cords and almost equally strong axial ribs, of which 16 appear on the first whorl, increasing to 24 on the penultimate whorl; the intersection of the spiral cords and axial ribs forming large, raised tubercles and the spaces enclosed by them deep, square pits; on the spiral cords the posterior is at the summit of the whor]s and the anterior a little above the suture with the median about half way between them; the tubercles of the posterior spiral row rounded, rather faint on the first 2 or 3 whorls but slightly the largest on the later whorls, the tubercles of the median and anterior row somewhat truncated on the posterior face; periphery with a spiral cord only a little less strong than those on the spire and rendered somewhat nodulous by the extensions of the axial ribs; base short, rounded, with 2 spiral cords of which the upper is nearer to the peripheral cord than to the lower, entire surface of spire and base with microscopic striations; aperture subquadrate, outer lip thin, scalloped by the spiral cords, anterior channel strong, columella short, not reflected. The type measures: length, 6.2 mm.; diameter, 2.0 mm.
Hertlein, L.G. & Strong, A.M., 1951; Mollusks from the W. Coast of Mexico & Central America. Part 10

Interchangeable taxa

The base of the shell of this species is sculptured with 2 unequal cords in comparison to 3 equal cords on Ceiithiopsis cosmia Bartsch.
Hertlein, L.G. & Strong, A.M., 1951; Mollusks from the W. Coast of Mexico & Central America. Part 10
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 guanacastensis Hertlein & Strong, 1951]
Data retrieved on: 29 November 2013

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