trachouros, Breviraja (Bathyraja) Ishiyama [R.] 1958:329 [137], Fig. 62 [Journal of the Shimonoseki College of Fisheries v. 7 (nos 2-3); ref. 2308] Off Erimo Peninsula, Hokkaido, Japan. Holotype: FAKU 49464 [R. Ishiyama no. 16736]. Paratypes: (30 specimens, 5 egg capsules) CAS 23105 or 23106 (1), 23107 (1); FAKU 49465 (1); MCZ 40270 (1). •Valid as Bathyraja trachouros (Ishiyama 1958) -- (Nakaya in Masuda et al. 1984:14 [ref. 6441], Stehmann 1986:263 [ref. 6151], McEachran & Dunn 1998:286 [ref. 23312], Compagno 1999:489 [ref. 25589], Nakabo 2000:167 [ref. 25086], Nakabo 2002:167 [ref. 26001], Ebert et al. 2013:351 [ref. 33045], Dyldin 2015:66 [ref. 34524], Tohkairin et al. 2015:4 [ref. 35331], Weigmann 2016:97 [ref. 34211], Last et al. 2016:27 [ref. 34941], Last et al. 2016:422 [ref. 35005], Dyldin & Orlov 2018:171 [ref. 35920], Dyldin & Orlov 2021:59 [ref. 38158], Misawa 2023:42 [ref. 39918]). Current status: Valid as Bathyraja trachouros (Ishiyama 1958). Arhynchobatidae. Distribution: Northwestern Pacific: Taiwan north to Sea of Okhotsk. Habitat: marine.