A report of four unrecorded species of opisthobranch molluscs from Korea Author Jung, Daewui Author Lee, Jongrak Author Kim, Chang-Bae text Journal of Species Research 2014 2014-02-28 3 1 1 6 http://dx.doi.org/10.12651/jsr.2014.3.1.001 journal article 10.12651/JSR.2014.3.1.001 2713-8615 8120252 Aplysiopsis nigra ( Baba, 1949 ) ( Fig. 2 ) Hermaeina nigra Baba, 1949: 15 , text-fig. 22-23, 33-34, 130-131, pl. 8, fig. 24; Baba, 1959: 332 . Aplysiopsis nigra : Okutani, 2000: 763 . Materials examined. 1 individual, Seongsan-ri , Seongsan-eup , Seogwipo-si , Jeju-do , Korea , 29 April 2013 ( D. Jung ) (KOSPIV0000185830) . Description. Body aeolidiform; ground color black; body length about 23 mm and width 4 mm in preserved specimen. Rhinophore with a white patch reaching from its tip to its eye. Branchial papillae slightly fusiform, black; tips white to yellow, rounded end ( Fig. 2A, B ); inner surface convex with white veins ( Fig. 2C ); outer surface flat, veins absent; arranged in 25 rows, forming into 2-4 files. Oral tentacles digitiform, short; tips with yellowish white. Foot little wide anteriorly, posterior narrow; margin yellowish white; sole dark gray ( Fig. 2D ). Fig. 3. Stiliger aureomarginatus Jensen, 1993 . A. dorso-lateral view. B. dorsal view. C. ventral view. D. digestive gland in cerata. A. living animal. B-D. preserved specimen (body length: 5 mm, width: 1 mm). Scales=1 mm. Distribution. Korea , Japan .