Mangelia louisa

Mangelia louisa
	Original image of a shell of Mangelia louisa
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Clade:	Caenogastropoda
Clade:	Hypsogastropoda
Clade:	Neogastropoda
Superfamily:	Conoidea
Family:	Mangeliidae
Genus:	Mangelia
Species:	M. louisa
Binomial name
	Mangelia louisa; (W.H. Dall, 1919)
Synonyms
	Cytharella louisa W.H. Dall, 1919 (original description)

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

Description

The length of the shell attains 4.25 mm, its diameter 1.7 mm.

(Original description) The minute shell has a protoconch with a small apex. The whorl is later swollen. The second whorl shows three strong spiral threads. The following three whorls contain 11 or 12 axial ribs with subequal interspaces and no pronounced shoulder. The spiral sculpture between the sutures of three consists of strong subequal flattish threads somewhat swollen when they override the ribs, and with a few much finer threads in the interspaces between the major threads. The spaces between the reticulation on the earlier whorls are deep and have a pitlike aspect. Near the suture in fresh specimens is a dark spiral band extending to the rounded shoulder, in front of which the shell is yellowish white with (on the body whorl) four or five narrow brown spiral lines with much wider interspaces. The aperture is moderately wide with a very shallow ill-defined sulcus. The outer lip is thickened and smooth. The siphonal canal is wide, not differentiated from the aperture. The inner lip is smooth.[1]

Distribution

This marine species occurs off California, USA.

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gollark: Clearly you should just implement vectorization so you can just run some magic "vectorize" thing on ANY instruction and the assembler works it out.

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gollark: In normal programming languages, we solve this with "loop" technology, or sometimes higher-order functions (which do loops internally).

gollark: I only meant it semimetaironically, but sure.

References

Dall (1919) Descriptions of new species of Mollusca from the North Pacific Ocean; Proceedings of the U.S. National Museum, vol. 56 (1920) This article incorporates text from this source, which is in the public domain.

External links

Tucker, J.K. 2004 Catalog of recent and fossil turrids (Mollusca: Gastropoda). Zootaxa 682:1–1295.
"Mangelia louisa". Gastropods.com. Retrieved 16 January 2019.

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[Dall-1] Dall (1919) Descriptions of new species of Mollusca from the North Pacific Ocean; Proceedings of the U.S. National Museum, vol. 56 (1920) This article incorporates text from this source, which is in the public domain.