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 Pleurobranchus peronii Cuvier, 1804 ( Fig. 1A ) Pleurobranchus peronii Cuvier, 1804: 266 , 275, pl. 18, fig. 1-6; Tryon and Pilsbry, 1895: 207-208 , pl. 48, fig. 24-28, pl. 74, fig. 88-90; Gosliner et al. , 2008: 100 . Pleurobranchus hirasei Baba, 1971: 24-25 , pl. 3; Okutani 2000: 771 . Materials examined. 3 individuals, Hwasun-ri , Andeokmyeon , Seogwipo-si , Jeju-do , 25 May 2013 ( D. Jung ) (KOSPIV0000185832). Description. Body ovate and large; length 67-102 mm , width 63-81 mm in living animal; yellow to reddish purple. Mantle covered foot except posterior end. Whole dorsum covered with small rounded tubercles; several tips of tubercles white, orange or dark purple. Reticulate pigment around the tubercles dark or white. Rhinophores enrolled and wrinkled; joined basally. Oral veil small and reversely trapezoid. Gills on right side of body, covered by mantle; bipinnated and alternated 22-23 pinnae on each side. Foot wide; anteriorly bilabiated; metapodium blunted and orange in color. Distribution. Korea , Japan , Hawaii, Indonesia , Malaysia , Papua New Guinea , Australia , South Africa , Madagascar , Tanzania . Remarks. P. peronii has a range of body colors that includes pale translucent white, yellow, brown and deep purple ( Rudman, 1999 ). Specimens examined in this study were yellow to reddish orange in body color. Also, brighter colors were shown in younger specimens.