Volutharpa ampullacea perryi (Mossogai)

Japanese: モスソガイ(裳裾貝) - モスソガイ（英語表記）Volutharpa ampullacea perryi

A gastropod of the Bucconidae family. Its scientific name, perryi , comes from the fact that it was first collected in Tokyo Bay by Commodore Perry, famous for his Black Ships, at the end of the Edo period, and hence it is also called Perribora. The shell is thin and globose, about 5 cm high and 3.4 cm in diameter. It has about five layers, each small and low, but the last layer is large and round. The shell is milky white and covered with a grayish-yellow velvety skin. The shell mouth is very large. The body has a large, flat foot, which resembles a tongue and is called "berotsubu" around the coast of Mutsu Bay.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

エゾバイ科の巻貝。学名のperryiは江戸末期に黒船で有名なペリー提督が東京湾で初めて採集したのにちなむが，それからペルリボラともいう。殻は薄く球卵形で，高さ5cm，径3.4cmくらいになる。巻きは5層くらいで小さくて低いが，最後の巻きは大きく丸く膨らむ。殻は乳白色で，その上を灰黄色のビロード様の皮がおおう。殻の口は非常に大きい。体には大きく平たい足があり，これを舌に見たてて陸奥湾沿岸などではベロツブという。

出典　株式会社平凡社世界大百科事典第２版について　情報

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