Steinberg, J. E. (1956). The pelagic nudibranch, Cephalopyge trematoides (Chun, 1889), in New South Wales with a note on other species in this genus. Proceedings of The Linnean Society of New South Wales. 81: 184-192, pl. 11.
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Steinberg, J. E.
1956
The pelagic nudibranch, <i>Cephalopyge trematoides</i> (Chun, 1889), in New South Wales with a note on other species in this genus
Proceedings of The Linnean Society of New South Wales