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Taxon profile

species

Pleurotomella herminea W. H. Dall, 1919

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Neogastropoda »  family Raphitomidae »  genus Pleurotomella

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Pleurotomella herminea

Author: Dall, W.H.

Taxon in country check-lists*

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Description

Shell of moderate size, gray, with brown apex; nucleus eroded; with a total of eight whorls; suture distinct, preceded by an obscure thickened margin, not appressed; whorls descending flatly from the suture to the shoulder; axial sculpture of (on the last whorl 10 or 11) short, protractively oblique rounded ribs, extending on the spire from the shoulder to the succeeding suture, but on the last whorl not over the base; and obscure incremental lines arcuate on the anal fasciole; spiral sculpture on the spire of three or more threads, with subequal interspaces, in the space between the periphery and the succeeding suture, and on the last whorl on the base about twenty flatter spirals with narrower interspaces; most of the threads are swollen where they pass over the ribs; aperture wide and short; anal fasciole deep and rounded, not quite adjacent to the suture; outer lip thin, produced, sharp; body erased; pillar short, gyrate, but the axis not pervious; canal distinct, short, slightly recurved. Height of shell, 19; of last whorl, 12; diameter, 8 mm. (Dall.)
TYPE in United States National Museum, No. 210544.
Oldroyd, I.S. The Marine Shells of the West Coast of North America. Volume II.1.

Distribution

Type locality, Station 4407, off Catalina Island, in 600 fathoms.
RANGE. Known only from type locality.
Oldroyd, I.S. The Marine Shells of the West Coast of North America. Volume II.1.
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 Pleurotomella herminea Dall, 1919]
Data retrieved on: 23 November 2013

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