* Gymnodoris inornata (Bergh, 1880) Figure 15I

Material examined.

One specimen 28 mm, HF.

Ecology.

Among coral and rubble in coral reef habitats. Depth 6-12 m.

Distribution.

Widespread in the Indo-Pacific including Mozambique ( Tibiriçá et al. 2017), China (Lin 1990), Hong Kong (Orr 1981), Japan (Baba 1949), Australia (Nimbs and Smith 2016), South Africa, Tanzania, Red Sea, Indonesia, Philippines, New Caledonia, and Hawaii (Gosliner et al. 2008). Here representing a first record for Thai waters.