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Let me quote Marcela Bolanos at LifeDesks:
"External anatomy: The dorsal background is black with velvety appearance and an orange marginal band with a black rim. The ventral side is grey-black, also with the same marginal bands. The pseudotentacles are squared and ruffled with the two marginal bands. A rounded and big cerebral cluster of eyes located in a clear round area. Large and wide pharynx with simple folds and two male pores well separated. Sucker relatively large and distinct."
How to cite:
Köhler, E. (2017), published 11 February 2017, Pseudobiceros hymanae Newman & Cannon 1998
available from http://www.Philippine-Sea-Slugs.com/Look-alike/Platyhelminthes/Pseudobiceros_hymanae/Select.htm