* Dermatobranchus caeruleomaculatus Gosliner & Fahey, 2011 Figure 19B

Material examined.

Two specimens 55-67 mm, SN.

Ecology.

Exclusive to the soft sediment habitats outside the coral reef. Depth 14-24 m.

Distribution.

Known from the western Pacific including Malaysia, Indonesia, and the Philippines (Gosliner et al. 2008), Papua New Guinea (Coleman 2008), and Japan (Nakano and Fujii 2014). Here documented as a first record for Thai waters.