Antiplanes sanctiioannis

Antiplanes sanctiioannis
Shell of Antiplanes sanctiioannis (holotype at the Smithsonian Institution)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Superfamily:	Conoidea
Family:	Pseudomelatomidae
Genus:	Antiplanes
Species:	A. sanctiioannis
Binomial name
Antiplanes sanctiioannis (Smith E. A., 1875)
Synonyms [1]
Antiplanes beringi(Aurivillius, 1885) Antiplanes sadoensisYokoyama, 1926 Antiplanes yessoensisDall, 1925 Pleurotoma beringiAurivillius, 1887 Pleurotoma sanctiioannisSmith E. A., 1875 (original combination) Spirotropis (Antiplanes) perversa(Gabb, 1865)

Antiplanes sanctiioannis is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids. ^[1]

Description

The length of the shell varies between 20 mm and 40 mm; maximum diameter 14 mm.

The fusiform shell contains 10 slightly convex whorls. The shell is clothed with a smooth, thickish, olive epidermis. The shell is covered with very narrow spiral striae and incremental flexuous stripes. The dark reddish aperture is ovate and contracted below. It measures about 2/5 of the total length. The siphonal canal is broad and slightly oblique. The narrow outer lip has a wide sinuation above the middle. The columella is twisted. The operculum is unguiform. ^[2]

Distribution

This marine species occurs off he Pacific Ocean coast of northern Honshu, Japan; also in the Bering Sea.

References

1. Antiplanes sanctiioannis (Smith E. A., 1875) . Retrieved through: World Register of Marine Species  on 31 March 2010.
2. E.A. Smith, A list of the Gasteropoda collected in Japanese seas by Commander H. C. St. John, R.; The Annals and magazine of natural history; zoology, botany, and geology ser.4 v.15 no. 85-90, 1875

• Aurivillius, Carl Wilhelm Samuel. Öfversigt öfver de af Vega-Expeditionen insamlade Arktiska hafsmollusker: Placophora och Gastropoda. Vega-Expeditionens vetenskapliga iakttagelser, 1885.
• Tucker, J.K. (2004). "Catalog of recent and fossil turrids (Mollusca: Gastropoda)" (PDF). Zootaxa. 682: 1–1295. doi:10.11646/zootaxa.682.1.1.
• Hasegawa K. (2009) Upper bathyal gastropods of the Pacific coast of northern Honshu, Japan, chiefly collected by R/V Wakataka-maru. In: T. Fujita (ed.), Deep-sea fauna and pollutants off Pacific coast of northern Japan. National Museum of Nature and Science Monographs 39: 225–383.

External links

• Specimen at MNHN, Paris
• "Antiplanes sanctiioannis". Gastropods.com. Retrieved 15 January 2019.