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By: Agassiz, Alexander, - U.S. Coast and Geodetic SurveyEdition:Publication info: Cambridge [Mass.], Printed for the Museum, 1883Volume: v.8:no.2 (1883)Series:Holding Institution: Harvard University, Museum of Comparative Zoology, Ernst Mayr LibrarySubjects: Dry Tortugas Florida VelellidaeBHL Collections: