Brush shell - Nebularia inquinata

Japanese: フデガイ(筆貝) - フデガイ（英語表記）Nebularia inquinata

A snail shell of the Mitridae family (illustration). The shell is 5.5 cm high, 1.6 cm wide, and spindle-shaped. It is thick and sturdy. The spiral spire is high and conical with eight layers. Each layer is weakly bulged, and the black background is cut with thin vertical and horizontal yellow stripes, creating a checkered pattern. The shell opening is narrow and long. The inner surface is white. The outer edge is somewhat straight with a circular indentation at the bottom. It lacks a lid. It is found from the Boso Peninsula south to Kyushu, and in the western Pacific Ocean, living on sandy bottoms at depths of 10 to 50 meters. The Mitridae family is diverse, with over 200 species found in Japan.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

フデガイ科の巻貝（イラスト）。殻の高さ5.5cm，幅1.6cmで紡錘形。厚質で堅固。螺塔（らとう）は高円錐形で8層。各層の膨らみは弱く，黒色の地が黄色の細い縦横の縞で切られて格子模様になる。殻口は狭く長い。内面は白色。外縁はややまっすぐで下端で円く湾入する。ふたを欠く。房総半島以南～九州，また西太平洋に分布し，水深10～50mの砂底にすむ。フデガイ科Mitridaeは種類が多く，日本産で200種を超える。

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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