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Taxon profile

species

Turbonilla gruberi 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 gruberi

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

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Description

Shell elongate-conic, slender, pale, brown¬ish; nucleus large, having a depressed helicoid spire with the axis at right angles to the following whorls, on the first of which it rests; normal whorls 9, the first 2 smooth, the others sculptured, slightly rounded, little raised above the sutures; axial ribs low, straight, strongly retractive, 24 appearing on the third whorl, increasing to about 40 on the last whorl; interspaces a little wider than the ribs, crossed by 7 spiral series of pits and incised lines unequal in strength and spacing; periphery rounded, marked by a narrow, smooth band; base well rounded with the axial ribs continuing over the umbilical region, the interspaces crossed by spiral series of pits and incised lines similar to those on the spire; aperture oval, outer lip slightly thickened, columella curved. The type measures: length, 6.1 mm.; diameter, 1.4 mm.
Hertlein, L.G. & Strong, A.M., 1951; Mollusks from the W. Coast of Mexico & Central America. Part 10

Interchangeable taxa

The shell of this species differs from such species as Turbonilla (Pyrgiscus) larunda Dall & Bartsch and Turbonilla (Pyrgiscus) cortezi Bartsch in that there are about 40 rather than 20 or 30 axial ribs on the last whorl.
Hertlein, L.G. & Strong, A.M., 1951; Mollusks from the W. Coast of Mexico & Central America. Part 10

Distribution

Pacific Middle America
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 gruberi Hertlein & Strong, 1951]
Data retrieved on: 23 November 2013

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