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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Parasagitta setosa ： ウィキペディア英語版 Parasagitta setosa ''Parasagitta setosa'' is a small arrow worm in the family Sagittidae, previously referred to as ''Sagitta setosa''. It is native to the northeastern Atlantic Ocean, the North Sea and the Mediterranean Sea, and also occurs in the Baltic Sea and the Black Sea. ==Description== ''P. setosa'' grows to a maximum length of , its tail being up to a quarter of this length. It is a thin, transparent, flexible worm with two pairs of rounded lateral fins composed completely of ray-like structures. There are eight to nine curved grasping hooks on the head. The teeth are in two rows, with six to eight in the front row and ten to sixteen at the back. The eyes have a star-shaped segment spot and the collarette is small or not present at all. The seminal vesicles are very near the posterior fins which are separated from the caudal fin. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Parasagitta setosa」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.