japonicus, Lionurus Matsubara [K.] 1943:149, Fig. 9 [The Journal of the Sigenkagaku Kenkyusyo v. 1 (no. 2); ref. 12783] Kumano-Nada, Japan. Holotype: FAKU 1951 [ex SFC no. 8] (lost). Paratype: FAKU 1938 (1, lost). •Valid as Ventrifossa japonica (Matsubara 1943) -- (Okamura in Okamura et al. 1982:147, 349 [ref. 8256], Okamura in Masuda et al. 1984:94 [ref. 6441], Iwamoto in Cohen et al. 1990:296 [ref. 18936], Nakabo 2000:421 [ref. 25086], Shinohara et al. 2001:306 [ref. 25995], Nakabo 2002:421 [ref. 26001]). •Valid as Kumba japonica (Matsubara 1943) -- (Iwamoto & Sazonov 1994:231 [ref. 21459], Chiou et al. 2004:45 [ref. 27691], Iwamoto et al. 2015:80 [ref. 35408], Nakayama 2020:225 [ref. 37888]). Current status: Valid as Kumba japonica (Matsubara 1943). Macrouridae. Distribution: Western North Pacific: Japan and Taiwan. Habitat: marine.