Online Book Subjects: Hydromedusae Displaying 1 - 3 of 3 Special bulletin no. 1 (1892) United States National Museum; Smithsonian Institution Government Printing Office 1892- Special bulletin no. 3 (1895) United States National Museum; Smithsonian Institution Government Printing Office 1892- Special bulletin no. 4 (1915) United States National Museum; Smithsonian Institution Government Printing Office 1892-
