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''Pitar (Hysteroconcha) dione'', or the elegant Venus clam, formerly known as ''Venus dione'', is a species of bivalve mollusc in the family Veneridae, the Venus clams. This species is found in the Gulf of Mexico, from eastern Mexico to the West Indies.〔Abbott, R.T. & Morris, P.A. ''A Field Guide to Shells: Atlantic and Gulf Coasts and the West Indies.'' New York: Houghton Mifflin, 1995. 68-69.〕 This species is unusual in that it has a double series of long, curved spines on the posterior slope of each valve. A closely related species which occurs in the Eastern Pacific is ''Pitar lupanaria''. The species was named in ''Systema Naturae'' in 1758 by the Swedish naturalist Linnaeus. Both there and in his 1771 ''Fundamenta Testaceologiae'', he described the shell in "disquieting()"〔 sexual terms, with the "obscene"〔 Latin words ''vulva'', ''anus'', ''pubis'', ''mons veneris'', ''labia'' and ''hymen''. ==In human culture: the Venus shell== The species was named by Linnaeus as ''Venus dione'', Venus being the name of the Roman goddess of love, and especially of sex.〔(【引用サイトリンク】 title=Da Costa and the Venus dione: The Obscenity of Shell Description ) From the ''Encyclopædia Romana'' by James Grout.〕 The specific epithet ''dione'' is the name of the mother of Venus in Roman mythology.〔(【引用サイトリンク】url=http://www.britishmuseum.org/explore/highlights/highlight_objects/gr/b/bronze_of_venus_or_dione.aspx )〕 The later generic name ''Hysteroconcha'' is from Greek ''hyster'', womb, and Latin ''concha'', shell. In his 1758 ''Systema Naturae'', and then in his 1771 ''Fundamenta Testaceologiae'', Linnaeus used a series of "disquieting()"〔 sexual terms to describe the shell: ''vulva'', ''anus'', ''nates'' (buttocks), ''pubis'', ''mons veneris'', ''labia'', ''hymen''.〔 The evolutionary biologist Stephen Jay Gould called Linnaeus's description "one of the most remarkable paragraphs in the history of systematics".〔 Some later naturalists found the terms used by Linnaeus uncomfortable; an 1803 review commented that "a few of these terms however strongly they may be warranted by the similitudes and analogies which they express, ... are not altogether reconcilable with the delicacy proper to be observed in ordinary discourse",〔 while the 1824 ''Supplement to the Encyclopaedia Britannica'' criticised Linnaeus for "indulg() in obscene allusions."〔 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「Pitar dione」の詳細全文を読む スポンサード リンク
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