Fridericia peregrinabunda Michaelsen, 1913

(Figure 12, A–C)

NIBRIV0000323338. Two adult specimens in 70 % ethanol. The main traits of our specimens are identical with the redescription of Schmelz (2003): two chaetae per bundle, five pairs of nephridia preclitellarly, chylus cells in XIII–XV, sperm funnel relatively small, large seminal vesicle and the type of spermatheca (Fig. 12 A,B), but our specimens are larger (20–25 mm long with 60–80 segment vs. 10–18 mm long and 60–70 segments in Schmelz (2003)). New traits, not mentioned until now: origin of dorsal vessel in XIX–XXI, coelomo-mucocytes roundish or oval, 35–60 µm long, with a characteristic thickened cell border (Fig. 12 C), lenticytes 7–8 µm long, in vivo. F. peregrinabunda was found as new for Korea in 2009 (An & Yang 2009).