| 词条 | Borsonella |
| 释义 |
| taxon = Borsonella | image = Borsonella erosina 001.jpg | image_caption = Drawing of a shell of Borsonella erosina | fossil_range = | authority = Dall, 1908 | synonyms_ref = [1] | synonyms = Spirotropis (Borsonella) Dall, 1908 | type_species= Borsonia dalli Dall, 1908 | display_parents = 3 }}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] SpeciesSpecies within the genus Borsonella include:
References1. ^1 {{WRMS species|432415|Borsonella ||12 August 2011}} 2. ^[https://www.biodiversitylibrary.org/item/95622#page/362/mode/1up 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. ^{{WRMS species|433142|Borsonella abrupta McLean & Poorman, 1971||16 April 2010}} 4. ^{{WRMS species|433143|Borsonella agassizii (Dall, 1908)||16 April 2010}} 5. ^{{WRMS species|433144|Borsonella barbarensis Dall, 1919||16 April 2010}} 6. ^{{WRMS species|432617|Borsonella callicesta (Dall, 1902)||16 April 2010}} 7. ^{{WRMS species|433145|Borsonella coronadoi (Dall, 1908)||16 April 2010}} 8. ^{{WRMS species|433146|Borsonella diegensis (Dall, 1908)||16 April 2010}} 9. ^{{WRMS species|432618|Borsonella erosina (Dall, 1908)||16 April 2010}} 10. ^{{WRMS species|433147|Borsonella galapagana McLean & Poorman, 1971||16 April 2010}} 11. ^{{WRMS species|433148|Borsonella omphale Dall, 1919||16 April 2010}} 12. ^{{WRMS species|433149|Borsonella pinosensis Bartsch, 1944||16 April 2010}} External links
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