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The Pneumodermatidae are a family of sea angels, or small floating predatory sea snails or sea slugs. They are pelagic marine heterobranch opisthobranch gastropod mollusks in the clade Gymnosomata. These small pelagic snails lack shells (except in their early embryonic stage). They are carnivores, equipped with swimming parapoda (fleshy, wing-like outgrowths), strong jaws, and grasping tentacles, often with suckers resembling those of cephalopods. ==Genera == Genera within the family Pneumodermatidae include: Genus: ''Pneumoderma'' de Roissy, 1805 * ''Pneumoderma atlanticum'' Oken, 1815 * ''Pneumoderma degraaffi'' van der Spoel & Pafort-van Iersel, 1982 - distribution: Sargasso Sea, length: 11.8 mm * ''Pneumoderma mediterraneum'' van Beneden, 1838 - distribution: Florida, Brazil, Mediterranean, length: 20 mm * ''Pneumoderma peronii'' Lamarck, 1819 - distribution: Red Sea * ''Pneumoderma violaceum'' d'Orbigny, 1836 - distribution: Bermuda, oceanic, length: 25 mm, description: This pteropod grabs its prey with two powerful suckers, each with about 30 suctorial disks, then it bulges out its long proboscis. * * * ''Pneumoderma violaceum pacificum'' Dall, 1871 * * * ''Pneumoderma violaceum violaceum'' d'Orbigny, 1836 Genus: ''Pneumodermopsis'' Keferstein, 1862 * ''Pneumodermopsis canephora'' Pruvot-Fol, 1924 * ''Pneumodermopsis ciliata'' (Gegenbaur, 1855) - distribution: circumglobal, oceanic, description: possesses five tentacles, each ending in a big suctorial disk * ''Pneumodermopsis macrochira'' Meisenheimer, 1905 - distribution: oceanic * ''Pneumodermopsis michaelsarsi'' Bonnevie, 1913 - distribution: Bermuda, oceanic * ''Pneumodermopsis oligocotyla'' Massy, 1917 * ''Pneumodermopsis paucidens'' (Boas, 1886) - distribution: Brazil, oceanic, length: 5 mm * ''Pneumodermopsis pupula'' Pruvot-Fol, 1926 * ''Pneumodermopsis spoeli'' Newman & greenwood, 1988 - Distriburion: Australia. * ''Pneumodermopsis teschi'' van der Spoel, 1973 - distribution: oceanic Genus ''Schizobrachium'' Meisenheimer, 1903 * ''Schizobrachium polycotylum'' Meisenheimer, 1903 - distribution: oceanic Genus ''Spongiobranchaea'' d'Orbigny, 1836 * ''Spongiobranchaea australis'' d'Orbigny, 1836 - distribution: Argentina, Australia, sub-Antarctic, Antarctica, oceanic, length: 22 mm * ''Spongiobranchaea intermedia'' Pruvot-Fol, 1926 - distribution: oceanic (image ) Genus ''Abranchaea'' Zhan Fu-Sui, 1975 * ''Abranchaea chinensis'' Zhan Fu-Sui, 1975 Genus ''Platybrachium'' Minichev, 1976 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「Pneumodermatidae」の詳細全文を読む スポンサード リンク
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