Mangelia subcircularis

Mangelia subcircularis
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Clade:	Caenogastropoda
Clade:	Hypsogastropoda
Clade:	Neogastropoda
Superfamily:	Conoidea
Family:	Mangeliidae
Genus:	Mangelia
Species:	M. subcircularis
Binomial name
	Mangelia subcircularis; W.H. Dall, 1927
Synonyms
	Mangilia subcircularis Dall, 1927

Mangelia subcircularis is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.[1]

Description

The length of the shell attains 8 mm, its diameter 2.7 mm.

(Original description) The small, slender, thin shell has a blunt apex. It is whitish and glistening. It shows a swollen protoconch of 1½ whorl and 4½ subsequent well rounded whorls. The suture is distinct, appressed, with a smooth, hardly constricted fasciole in front of it. The axial sculpture consists chiefly of rather strong flexuous incremental lines and a few gradually obsolescent riblets on the earlier whorls. The spiral sculpture consists of (on the body whorl 18–20) fine prominent threads rising above the incremental lines, with wider interspaces, covering the whole whorl in front of the fasciole;. The aperture is ovate, measuring about⅓ the whole length. The anal sulcus forms nearly a semicircle. The outer lip is thin and arcuate. The siphonal canal is wide. The columella is twisted, attenuated in front; axis impervious.[2]

Distribution

This marine species was found off Georgia, USA.

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References

Mangelia sagena (Dall, 1927). Retrieved through: World Register of Marine Species on 9 August 2011.
Dall W. H. (1927). Small shells from dredgings off the southeast coast of the United States by the United States Fisheries Steamer "Albatross", in 1885 and 1886; Proceedings of the United States National Museum, 70(18): 1–134 This article incorporates text from this source, which is in the public domain.

This article incorporates public domain material from websites or documents of the Smithsonian Institution.

External links

Smithsonian Institution: Mangilia subcircularis
"Mangelia subcircularis". Gastropods.com. Retrieved 16 January 2019.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.

[WoRMS-1] Mangelia sagena (Dall, 1927). Retrieved through: World Register of Marine Species on 9 August 2011.

[2] Dall W. H. (1927). Small shells from dredgings off the southeast coast of the United States by the United States Fisheries Steamer "Albatross", in 1885 and 1886; Proceedings of the United States National Museum, 70(18): 1–134 This article incorporates text from this source, which is in the public domain.