Coward, W.E., 1909. On Ptilocodium repens , a new gymnoblastic hydroid epizoic on a pennatulid. Versl. wis.-en natuurk. Afd. K. Akad. Wet. Amst. 17 2: 729-735.
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Publication
pl. 1. - Also in: Proc. K. ned. Akad. Wet. Amst., Sect. Sci. 11(1): 635-641, pl. 1.Descriptor: Ptilocodium repens