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This species is Marionia sp. 10 in IPN page 341, let me quote the description: "This species is light brownish with purple secondary gills, velar tentacles and apices of the rhinophoral sheaths."
The specimen #1 was misidentified and posted on 19 November 2014 at these websites because of the thin brown transverse lines as Marionia distincta Bergh, 1905, which differs by the tan colour of the gills.
Gosliner, Terrence M., David W. Behrens & Ángel Valdés. 2008. Indo-Pacific Nudibranchs and Sea Slugs. Sea Challengers Natural History Books.
Gig Harbor, Washington. 426pp.
How to cite:
Köhler, E. (2017), published 17 June 2017, Marionia sp. 12 Genus: Vayssière, 1877
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Dexiarchia/Marionia_sp_12.htm