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Taxon profile

species

Cylichnium domitum W. H. Dall, 1908

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Opistobranchia - opisthobranchs »  family Haminoeidae »  genus Cylichnium

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Cylichnium domitum

Author: Dall, W.H.

Description

Shell solid, yellowish white, short, broad and squarely truncate in front with a rather blunt mammiform spire exhibiting about three turns; surface transversely marked with faint lines of growth, and near the suture with fine well-marked wrinkles as if too large for the spire around which the posterior fourth of the whorl is closely wound and very strongly appressed, giving the posterior edge of the last whorl especially a bevelled appearance; spiral sculpture, extremely fine grooves, not puncticulate, strong on the posterior aspect, obsolete on the body (which appears polished), and, except in the young, on the anterior extreme; the sutural wrinkles are prettily shagreened by the intersection of these fine close grooves; spire very obliquely wound, the margin of the volutions rounded (notwithstanding its being closely appressed), and the rounded edge often eroded showing the inner porcellanous under the outer more cretaceous layer, the extreme apex eroded in all the specimens obtained; aperture very wide in front, extremely narrow behind; the margin retreating from the columella to half-way between axis and exterior, almost straight in front, then rising and continuing backward nearly parallel to the axis, and falling away again obliquely to the suture, forming an extremely narrow and deep notch ; body with a thin deposit of white callus, columella hardly thickened, spiral, passing without noticeable interruption into the anterior margin; outer lip sharp, thin. Long. of shell, 9.0 mm; of aperture, 7.5 mm; max. lat. of shell, 5.25 mm; of aperture, 3.37 mm.

DESCRIBED AS Utriculus (Vortex) domitus
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)

Distribution

Caribic. Off Bequia. Off Guadeloupe.
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 Cylichnium domitum (Dall, 1908)]
Data retrieved on: 23 November 2013

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