Goniobranchus aureopurpureus (Collingwood, 1881) Figure 10A

Material examined.

One specimen 45 mm, SN.

Ecology.

Locally rare, known only from soft sediment habitats outside the coral reef. Depth 12-16 m.

Distribution.

Across the Indo-Pacific including Myanmar (Sanpanich and Duangdee 2019), Australia (Nimbs and Smith 2016), the Philippines, Indonesia, China, Japan, Papua New Guinea, and New Caledonia (Gosliner et al. 2008). Known from both Andaman and Gulf waters of Thailand (Chavanich et al. 2013).