Borsonella coronadoi

Borsonella coronadoi
Original drawing of a shell of Borsonella coronadoi
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Superfamily:	Conoidea
Family:	Borsoniidae
Genus:	Borsonella
Species:	B. coronadoi
Binomial name
Borsonella coronadoi (Dall, 1908)
Synonyms [1]
Borsonella nychiaDall, 1919 Borsonia coronadoiDall, 1908 (original combination) Borsonia (Borsonella) coronadoiDall, 1908 (basionym) Spirotropis (Borsonella) cornadoi(Dall, 1908)

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

Description

The length of the shell attains 29 mm, its maximum diameter is 9 mm.

(Original description) The slender shell is acute with about ten whorls. Its color is pinkish white, with a pale brown periostracum. The spire is longer than the aperture. The nuclear whorls are smooth, turgid, the subsequent turns carrying a rounded low keel, usually in front of the middle of the whorls forming the pire, the area between which and the suture is flatly impressed, the whorl in front gently rounded. On some of the early whorls the keel is slightly undulated, but not regularly nodulous. Besides the lines of growth, both the fasciole and the anterior part of the whorl show indications under a lens of obscure regular distant spiral striae, and are also more or less marked with a faint vermicular reticulation of the surface. The distinct suture is not appressed. The aperture is narrow. The anal sulcus is deep and wide, reaching the suture The outer lip is thin, sharp, and arcuately produced. The inner lip is slightly eroded, polished, with no callus. There is plication at the proximal end of the columella. The axis is impervious, cnual short, wide, deep, slightly recurved with a fairly well-marked fascicle. ^[2]

Distribution

This species occurs in the Pacific Ocean off California.

References

1. Borsonella coronadoi (Dall, 1908) . Retrieved through: World Register of Marine Species  on 13 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 p. 277 (1904)

• Dall, W.H. (1908c) 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. XXXVII. 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 Brachiopoda. Bulletin of the Museum of Comparative Zoölogy, 43, 205–487, 22 pls

• Tucker, J.K. 2004 Catalog of recent and fossil turrids (Mollusca: Gastropoda). Zootaxa 682:1–1295.
• McLean J.H. (1996). The Prosobranchia. In: Taxonomic Atlas of the Benthic Fauna of the Santa Maria Basin and Western Santa Barbara Channel. The Mollusca Part 2 – The Gastropoda. Santa Barbara Museum of Natural History. volume 9: 1–160