Borsonella bartschi

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Borsonella bartschi
Borsonella callicesta 001.jpg
Shell of Borsonella bartschi (holotype at Smithsonian Institution)
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Superfamily: Conoidea
Family: Borsoniidae
Genus: Borsonella
Species:
B. bartschi
Binomial name
Borsonella bartschi
(Arnold, 1903)
Synonyms [1]
  • Borsonella civitellaDall, 1919
  • Borsonella nicoliDall, 1919
  • Pleurotoma (Borsonia) bartschiArnold, 1903 (basionym)
  • Pleurotoma bartschiArnold, 1903 (original combination)

Borsonella bartschi is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae. [1]

Contents

Description

The solid shell is white, covered with a pale straw-colored periostracum. It contains eight whorls exclusive of the (lost) nucleus. The suture is distinct with a slightly swollen margin. The axial sculpture consists of (on the penultimate whorl about nine) nodular ribs, peripheral on the spire, becoming obsolete on the body whorl, beginning in front of the fasciole and obscure beyond the periphery. The spiral sculpture consists of fine striae, visible only in occasional spots. The fasciole is somewhat constricted. Beside this there are faint traces of vermicular sculpture visible under a glass, reminiscent of the sculpture in Borsonella barbarensis . The aperture is narrow. The anal sulcus is moderately deep. The thin outer lip is arcuate. The body and the columella are smooth. The plait is hidden behind the columella which is attenuate in front. The siphonal canal is short and wide.

The height of shell attains 22 mm ; of the body whorl: 13 mm: diameter: 8 mm. [2]

Distribution

This species occurs in the Pacific Ocean off Santa Barbara Island, California.

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References

  1. 1 2 Bouchet, P. (2015). Borsonella bartschi (Arnold, 1903). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=849179 on 2016-02-25
  2. ↑ Dall (1919) Descriptions of new species of Mollusca from the North Pacific Ocean; Proceedings of the U.S. National Museum, vol. 56 (1920) (described as Borsonella nicoli)
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