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Conradi Gesneri medici Tigurini Historiae animalium liber IV . De Aquatilibus Cochleae in lacu noftro circa ripam inueniuntur diuerforum generum que difrerunt Inter fe figura colore fohditate Sunt enim quedam ex eis rotundiorcs in fummitate quam cencrum feu princi pmm Ipira dixeris plamores hebeciorefque ita vt vmbilicum eaparte