Taxon profile


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

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


Turbonilla ulyssi

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

Taxon in country check-lists*

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Shell elongate-conic, rather stout, white; nucleus having a depressed helicoid spire with the axis at right angles to that of the following whorls, in the first of which it is about one-third immersed; normal whorls 8, the upper whorls well rounded, the later whorls less so; axial ribs low, rounded, distinctly protractive on the upper whorls, nearly vertical on the later ones, 18 appearing on the first whorl, increasing to 28 on the last whorl, the ribs are contracted to sharp points at the summit, undulating the suture; interspaces only a little wider than the ribs, crossed by sharp, incised spiral lines, varying somewhat in number and spacing from whorl to whorl but averaging about 15; periphery rounded, without definite marking; base produced, with about 15 incised spiral lines similar in strength and spacing to those on the spire, the upper 5 or 6 interrupted by feeble extensions of the axial ribs; aperture ovate, outer lip slightly thickened, columella short, straight. The type measures: length, 5.0 mm.; diameter, 1.7 mm.
Hertlein, L.G. & Strong, A.M., 1951; Mollusks from the W. Coast of Mexico & Central America. Part 10

Interchangeable taxa

The character of the axial ribbing of this species, sharply pointed at the ends of the ribs, serves to differentiate it from such species as Turbonilla (Pyrgiscus) flavescens Carpenter.
Hertlein, L.G. & Strong, A.M., 1951; Mollusks from the W. Coast of Mexico & Central America. Part 10


Near Corinto, Nicaragua.
Author: Jan Delsing

Links and literature

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [] [as Turbonilla ulyssi Hertlein & Strong, 1951]
Data retrieved on: 23 November 2013

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