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- Lendenfeld, R. von. 1915. The Sponges. 3. Hexactinellida. In: Reports on the Scientific Results of the Expedition to the Eastern Tropical Pacific, in charge of Alexander Agassiz, by the U.S. Fish Commission Steamer ‘Albatross’, from October, 1904, to March, 1905, Lieut. Commander L.M. Garrett, U.S.N., Commanding, and of other expeditions of the ‘Albatross', 1891-1899 (29). Memoirs of the Museum of Comparative Zoology at Harvard College. 42(2): 1–396, pls. 1–109. PDF.