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・ Herpetopoma annectans
・ Herpetopoma aspersum
・ Herpetopoma atratum
・ Herpetopoma barbieri
・ Herpetopoma bellum
・ Herpetopoma benthicola
・ Herpetopoma corallinum
・ Herpetopoma corrugatum
・ Herpetopoma crassilabrum
・ Herpetopoma elevatum
・ Herpetopoma exasperatum
・ Herpetopoma fenestratum
・ Herpetopoma fimbriatum
・ Herpetopoma helix
・ Herpetopoma howensis
Herpetopoma instrictum
・ Herpetopoma larochei
・ Herpetopoma lischkei
・ Herpetopoma mariae
・ Herpetopoma naokoae
・ Herpetopoma norfolkensis
・ Herpetopoma pauperculum
・ Herpetopoma poichilum
・ Herpetopoma pruinosum
・ Herpetopoma pumilio
・ Herpetopoma ringens
・ Herpetopoma rubrum
・ Herpetopoma scabriusculum
・ Herpetopoma serratocinctum
・ Herpetopoma seychellarum


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Herpetopoma instrictum : ウィキペディア英語版
Herpetopoma instrictum

''Herpetopoma instrictum'', common name the basket-like false top shell, is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae.〔Bouchet, P. (2012). ''Herpetopoma instrictum'' (Gould, 1849). Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=547219 on 2013-04-14〕〔Poppe G.T., Tagaro S.P. & Dekker H. (2006) The Seguenziidae, Chilodontidae, Trochidae, Calliostomatidae and Solariellidae of the Philippine Islands. Visaya Supplement 2: 1-228.〕〔Higo, S., Callomon, P. & Goto, Y. (1999) Catalogue and Bibliography of the Marine Shell-Bearing Mollusca of Japan. Elle Scientific Publications, Yao, Japan, 749 pp.〕〔Herbert D.G. (2012) A revision of the Chilodontidae (Gastropoda: Vetigastropoda: Seguenzioidea) of southern Africa and the south-western Indian Ocean. African Invertebrates, 53(2): 381–502. (6 November 2012)〕
==Description==
The size of the shell varies between 3 mm and 10 mm. The small, solid, elevated shell has an ovate-conic shape. It is white, with a series of about 10 rufous spots near the suture. The five whorls form a conical spire. They are ventricose, with delicate, highly elevated spiral rib-striae,- of which there are about 5 on the upper and 10 on the last whorl. The surface of the ribs is slightly tuberculous, and the last one overhangs the succeeding whorl so as to form a broad deep channel at the suture. The interspaces have about the same width as the ribs, and are beautifully barred with close-set laminae. The base of the shell isconvex, with a small deep scalariform umbilicus, sculptured like the spire. The aperture is obliquely semicircular. The outer lip is crenulated by the ribs, and conspicuously sulcate within. The columella is sharp, oblique, armed with a fully developed sharp tooth at the base, succeeded by a deep basal notch.〔(Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia ) (described as ''Euchelus instrictus'')〕

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