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Symethis
''Symethis'' is a genus of crabs. It differs from other genera in the family Raninidae by the lack of ornamentation of the male first pleopods and by the reduced number of gills (7 pairs rather than 8 pairs), and is therefore placed in a separate subfamily, Symethinae. There are three extant species: *''Symethis corallica'' Davie, 1989 – Chesterfield Reefs, Coral Sea *''Symethis garthi'' Goeke, 1981 – Pacific coast of Panama 〔 *''Symethis variolosa'' (Fabricius, 1793) – western Atlantic Ocean, from North Carolina, to Bahia, Brazil 〔 One further species, ''Symethis johnsoni'' is known from fossils of Paleogene age, but may belong in the subfamily Lyreidinae rather than in ''Symethis''.〔 ==References==
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「Symethis」の詳細全文を読む
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