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Taxon profile

species

Turbonilla domingana J. G. Hertlein & A. M. Strong, 1951

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Allogastropoda »  family Pyramidellidae »  genus Turbonilla

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Turbonilla domingana

Author: Hertlein, L.G. & Strong, A.M.

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Description

Shell slender , regularly elongate-conic, translucent, white; nuclear whorls 2, depressed, with their axis at right angles to that of the postnuclear whorls in the first of which they are about one-third immersed; postnuclear whorls 10, the upper ones roundly shouldered, the last 2 flattened; axial sculpture of low, nearly vertical ribs,with wider interspaces, 14 appearing on the upper whorls and 16 on the last whorl; spiral sculpture of 0 incised lines in the interspaces between the axial ribs, the upper 4 widely spaced and occupying a little more than half the area between the sutures, the following 5 closely spaced with the last just above the suture, a little stronger than the others; periphery rounded, with a narrow smooth space bounded at the lower edge with an incised line at which the axial ribs terminate; base moderately long, with a second narrow, smooth space just below the peripheral one, followed by 5 closely spaced, incised spiral lines; aperture ovate, slightly expanded at the anterior end; outer lip thin, showing the external sculpture within; columella nearly straight, reflected, revolute; body with a slightly raised callus. The type measures: length, 6.3 mm.; maximum diameter, 1.5 mm.
Hertlein, L.G. & Strong, A.M., 1951; Mollusks from the W. Coast of Mexico & Central America. Part 10

Interchangeable taxa

The unique type can probably be best com-pared with Turbonilla (Pyrgiscus) corsoensis Bartsch which has similar axial ribs and the same number of spiral lines. However, the present species possesses a more slender shell, with the later whorls less shouldered, and the arrangement of the spiral lines entirely different.
Hertlein, L.G. & Strong, A.M., 1951; Mollusks from the W. Coast of Mexico & Central America. Part 10

Distribution

Off San Domingo Point, Santa Inez Bay, Lower California, and in the Gulf of California
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 Turbonilla domingana Hertlein & Strong, 1951]
Data retrieved on: 23 November 2013

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