longicauda, Rhinoraja Ishiyama [R.] 1952:25, Pl. 4; Fig. 7 [Journal of the Shimonoseki College of Fisheries v. 2 (no. 2); ref. 2307] Off Hachinohe to Erimo Peninsula, Japan. Holotype: Reizo Ishiyama coll. no. 16737. Paratypes: (25) CAS 23128 (1). •Valid as Rhinoraja longicauda Ishiyama 1952 -- (Nakaya in Amaoka et al. 1983:61, 171 [ref. 8379], Nakaya in Masuda et al. 1984:15 [ref. 6441], Raschi & McEachran 1991:1902 [ref. 16689], McEachran & Dunn 1998:286 [ref. 23312], Dolganov 1999:429 [ref. 24873], Compagno 1999:489 [ref. 25589], Nakabo 2000:170 [ref. 25086], Sheiko & Fedorov 2000:15 [ref. 25650], Nakabo 2002:170 [ref. 26001], Spies et al. 2011:58 [ref. 31143], Spies et al. 2011:80 [ref. 31143], Parin et al. 2014:38 [ref. 33547], Dyldin 2015:67 [ref. 34524], Weigmann 2016:101 [ref. 34211] with remarks, Last et al. 2016:466 [ref. 35005], Dyldin & Orlov 2018:172 [ref. 35920], Dyldin & Orlov 2021:59 [ref. 38158]). Current status: Valid as Rhinoraja longicauda Ishiyama 1952. Arhynchobatidae. Distribution: Northwestern Pacific: Japan; Sakhalin (Russia). Habitat: marine.