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The photographer Dr. Alicia Hermosillo-González labeled this picture "Hallaxa verde.JPG", the genus Hallaxa Eliot, 1909 is placed in the family Actinocyclidae Pruvot-Fol, 1934, it is much more likely to be a Discodorid.
How to cite:
Köhler, E. (2016), published 27 April 2016, Discodorididae sp. 28 Family: Bergh, 1891
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Doridina/Discodorididae_sp_28.htm