Hindsiclava alesidota

Hindsiclava alesidota, common name the lean turris, is a species of sea snail, a marine gastropod mollusc in the family Pseudomelatomidae, the turrids.[1]

Hindsiclava alesidota
Shell of Hindsiclava alesidota (holotype at the Smithsonian Institution)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Clade:	Caenogastropoda
Clade:	Hypsogastropoda
Clade:	Neogastropoda
Superfamily:	Conoidea
Family:	Pseudomelatomidae
Genus:	Hindsiclava
Species:	H. alesidota
Binomial name
Hindsiclava alesidota (Dall, 1889)
Synonyms[1]
Drillia alesidota Dall, 1889

Description

The length of the shell varies between 20 mm and 53 mm.

(Original description) The large, slender shell is ashy brown or light brown, pointed and rudely sculptured. It contains 10 whorls, with a protoconch of about two whorls, round, small, glassy, smooth and inflated. The fasciole is slightly concave, nearly smooth, very steep, separated from the suture by a smoothish space, marginated by a slightly raised thread. The suture is appressed. The spiral sculpture consists of numerous subequal little elevated revolving threads with wider interspaces. They are strongest on the summit of the riblets and faint in the interspaces. There are about five in front of the fasciole and between it and the next suture. They are fainter on the siphonal canal. The transverse sculpture consists of numerous (on the penultimate whorl 28) narrow, little elevated, slightly oblique riblets, beginning and strongest at the fasciole, and passing over the whorl to fade away on the base. The thin margin of the suture is sometimes undulated by passing over them. The aperture is narrow and long. The notch is rounded and not deep. The outer lip is simple, thin, arched forward, not constricted for the siphonal canal. The inner lip is simple and shows a slight callus, thicker at the posterior angle opposite the notch. The columella is straight, attenuated and somewhat twisted in front. The siphonal canal is wide and slightly recurved.[2]

Distribution

This marine species occurs between North Carolina and Texas, USA; and off Barbados and French Guiana.

References

1. Hindsiclava alesidota (Dall, 1889). Retrieved through: World Register of Marine Species on 4 April 2010.
2. Dall, W. H. 1889b. Reports on the results of dredgings, under the supervision of Alexander Agassiz, in the Gulf of Mexico (1877-78) and in the Caribbean Sea (1879-80), by the U. S. Coast Survey Steamer 'Blake,' Bulletin of the Museum of Comparative Zoology 18 1-492, pls. 10-40

• W.H. Dall (1889) A preliminary catalogue of the shell-bearing marine mollusks and brachiopods of the southeastern coast of the United States, with illustrations of many of the species; Bulletin of the United States National Museum ; no. 37. This article incorporates text from this source, which is in the public domain.

External links

• Rosenberg G., Moretzsohn F. & García E. F. (2009). Gastropoda (Mollusca) of the Gulf of Mexico, Pp. 579–699 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Biodiversity. Texas A&M Press, College Station, Texas
• Census of Marine Life (2012). SYNDEEP: Towards a first global synthesis of biodiversity, biogeography and ecosystem function in the deep sea.
• Tucker, J.K. (2004). "Catalog of recent and fossil turrids (Mollusca: Gastropoda)" (PDF). Zootaxa. 682: 1–1295.
• "Hindsiclava alesidota". Gastropods.com. Retrieved 16 January 2019.