Template:Ridley & Duncan, 1881

• Ridley, S.O. & Duncan, P.M. 1881. On the Genus Plocamia, Schmidt, and on some other Sponges of the Order Echinonemata. With Descriptions of two additional new Species of Dirrhopalum. The Journal of the Linnean Society of London. Zoology 15(88): 476–497, pls 28–29. BHL  
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Nomenclatural acts

• Date of publication: 1881

New names (5)

• Dirrhopalum [p. 477]
• Dirrhopalum novizelanicum [p. 483]
• Dirrhopalum carteri [p. 492]
• Dirrhopalum hystrix [p. 492]
• Echinodictyum [p. 493]