Acanthochiton defilippii (hairy turtle shell)

Japanese: ケハダヒザラガイ(毛膚石鼈貝) - ケハダヒザラガイ（英語表記）Acanthochiton defilippii

A mollusc of the Polyplacophora family, Chitonidae, with a row of spines on its back. The body is oval, 4.8 cm long and 3.7 cm wide, with a weak bulge on the back, and eight slightly small shells lined up in a pile in the center of the back. The six middle shells are blackish, narrow at the front, triangular in shape, and have a pair of pale yellow stripes running front to back. The other parts, called the flesh belt, are blackish and densely covered with small spines all over, but there are nine sharp spine bundles running parallel to each other on the left and right sides of the shell.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

背面に刺毛の束が並ぶ多板綱ケハダヒザラガイ科の軟体動物。体は楕円形で，長さ4.8cm，幅3.7cm，背面の膨らみは弱く，背面中央にはやや小さい貝殻が8枚前後に重なりあって並んでいる。中間の6枚の殻は黒みがあり，前方が狭くなり三角形状になっており淡黄色の1対の縞が前後に連なっている。肉帯という他の部分は黒みがかり，小さいとげが全面に密に生えているが，殻の左右に平行して鋭いとげの束が9個ずつ前後に並んでいる。

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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