Borsonella

Borsonella
Drawing of a shell of Borsonella erosina
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Caenogastropoda
Clade: Hypsogastropoda
Clade: Neogastropoda
Superfamily: Conoidea
Family: Borsoniidae
Genus: Borsonella
Dall, 1908
Type species
Borsonia dalli Dall, 1908
Synonyms[1]

Spirotropis (Borsonella) Dall, 1908

Borsonella is a genus of sea snails, marine gastropod mollusks in the family Borsoniidae.[1]

Description

(Original description) The shell has a small, blunt nucleus of one or two whorls. The sculpture is chiefly spiral, feeble, except for one or two spiral carinae, sometimes with a few small riblets or beads on the principal carina. The periostracum is conspicuous, smooth or vermiculate. The siphonal canal is wide and very short. The outer lip is sharp, simple, arcuat. The columella is solid, with one strong, nearly horizontal plait continuous upon the whole axis. This axis is impervious, the operculum absent. Type Borsonia dalli

There is never more than one plait in Borsonella ; in Cordieria Rouault, 1848, as restricted by Cossmann, there are never less than two. In Rouaultia the anal sulcus is narrow, sharp, and situated at the shoulder in the peripheral carina. Both Cordieria and typical Borsonia have a long and slender canal and the general aspect of Gemmula Weinkauff, 1875, while Borsonella resembles an Antiplanes Dall, 1902 with a strong plait on the proximal part of the columella. [2]

Species

Species within the genus Borsonella include:

Species brought into synonymy

References

  1. 1 2 Borsonella .  Retrieved through: World Register of Marine Species on 12 August 2011.
  2. ↑ W.H. Dall (1908): Reports on the Dredging Operations off the West Coast of Central America to the Galapagos, to the West Coast of Mexico, and in the Gulf of California, in charge of Alexander Agassiz, carried on by the U. S. Fish Commission Steamer "Albatross," during 1891, Lieut. Commander Z. L. Tanner, U. S. N., Commanding. XXX VII. Reports on the Scientific Results of the Expedition to the Eastern Tropical Pacific, in charge of Alexander Agassiz, by the U. S. Fish Commission Steamer "Albatross," from October, 1904, to March, 1905, Lieut. Commander L. M. Garrett, U. S. N., Commanding. XIV. The Mollusca and the Brachiopoda; Bulletin of the Museum of Comparative Zoology at Harvard v. 43 (1904)
  3. ↑ Borsonella abrupta McLean & Poorman, 1971.  Retrieved through: World Register of Marine Species on 16 April 2010.
  4. ↑ Borsonella agassizii (Dall, 1908).  Retrieved through: World Register of Marine Species on 16 April 2010.
  5. ↑ Borsonella barbarensis Dall, 1919.  Retrieved through: World Register of Marine Species on 16 April 2010.
  6. ↑ Borsonella callicesta (Dall, 1902).  Retrieved through: World Register of Marine Species on 16 April 2010.
  7. ↑ Borsonella coronadoi (Dall, 1908).  Retrieved through: World Register of Marine Species on 16 April 2010.
  8. ↑ Borsonella diegensis (Dall, 1908).  Retrieved through: World Register of Marine Species on 16 April 2010.
  9. ↑ Borsonella erosina (Dall, 1908).  Retrieved through: World Register of Marine Species on 16 April 2010.
  10. ↑ Borsonella galapagana McLean & Poorman, 1971.  Retrieved through: World Register of Marine Species on 16 April 2010.
  11. ↑ Borsonella omphale Dall, 1919.  Retrieved through: World Register of Marine Species on 16 April 2010.
  12. ↑ Borsonella pinosensis Bartsch, 1944.  Retrieved through: World Register of Marine Species on 16 April 2010.
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