A report of a new species and new record of (Nudibranchia, Cadlinidae) from South Korea.

Of the four species in the genus present in the northwestern Pacific region, has been the only species recorded from South Korea. For the purpose of investigating in Korean waters, specimens were collected from the Korean East Sea (Sea of Japan) by scuba diving. The radula and morphology of these specimens were examined by stereoscopic and scanning electron microscopy.