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The identifications of the above species of Coriocella are to my best knowlegde, there is still a discussion whether these species are distinct.
Let me quote Gosliner, Behrens & Williams (1997) on species of Lamellaria:"At present it is virtually impossible to identify Indo-Pacific lamellarids to
species. The taxonomic distinctions between species are poorly known and little is known about their anatomy."
Gosliner, T.M., Behrens, D.W. & Williams, G.C. (1997) Coral Reef Animals of the Indo-Pacific. 314pp.
Monterey, California: Sea Challengers.
How to cite:
Köhler, E. (2016), published 7 December 2016, Velutinidae J. E. Gray, 1840
available from https://www.Philippine-Sea-Slugs.com/Look-alike/Velutinidae/Velutinidae.htm