Nutting, C.C. (1904). American Hydroids. Part II. The Sertularidae. Smithsonian Institution, United States National Museum Special Bulletin. 4: 1-325, pls. 1-41.
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Nutting, C.C.
1904
American Hydroids. Part II. The Sertularidae
Smithsonian Institution, United States National Museum Special Bulletin