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・ Pyrausta bouveti
・ Pyrausta californicalis
・ Pyrausta cardinalis
・ Pyrausta carnifex
・ Pyramidella maculosa
・ Pyramidella magdalenensis
・ Pyramidella mazatlanica
・ Pyramidella mexicana
・ Pyramidella moffati
・ Pyramidella nitidula
・ Pyramidella panamensis
・ Pyramidella sanctaehelenae
・ Pyramidella scitula
・ Pyramidella subdolabrata
・ Pyramidella subglabra
Pyramidella tarpeia
・ Pyramidella terebelloides
・ Pyramidella turrita
・ Pyramidellidae
・ Pyramidellidae incertae sedis
・ Pyramidellidae incertae sedis gracilis
・ Pyramidellidae incertae sedis insularis
・ Pyramidellinae
・ Pyramidelloidea
・ Pyramidelloides
・ Pyramidelloides angulata
・ Pyramidelloides angustus
・ Pyramidelloides baculumpastoris
・ Pyramidelloides barbadensis
・ Pyramidelloides carinatus


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Pyramidella tarpeia : ウィキペディア英語版
Pyramidella tarpeia

''Pyramidella tarpeia'' is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies. 〔 Sartori, André F. (2015). Pyramidella tarpeia Bartsch, 1915. Accessed through: World Register of Marine Species at http://marinespecies.org/aphia.php?p=taxdetails&id=820835 on 2015-04-18〕
This species has become a taxon inquerendum.
==Description==
The small, almost translucent shell has an elongate-conic shape. Its length measures 3.7 mm. The whorls of the protoconch are small, very obliquely immersed in the first of the succeeding turns, above which the rounded, tilted edge of the last volution only projects. The six whorls of the teleoconch are high between the sutures, slightly rounded, and feebly shouldered at the summit. They are marked by retractive fines of growth, and exceedingly fine, spiral striations. The sutures are well impressed. The periphery of the body whorl is well rounded. The base is somewhat prolonged, well rounded, and marked like the spire. The aperture is oval. The posterior angle is acute. The outer lip is thin. The inner lip is very short, decidedly curved, and slightly reflected and appressed. The parietal wall is covered with a moderately thick callus. 〔

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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