Platyrhinoidis triseriata (Jordan & Gilbert, 1880) .

Thornback Ray or Thornback Fanray. To 91 cm (35.8 in) TL (Ebert 2003). Tomales Bay, northern California (Plant 1989) to the Bahía Magdalena Complex (de la Cruz-Agüero et al. 1994); disjunct population in the Gulf of California (McEachran in Fischer et al. 1995). A report from Ecuador (Béarez 1996) is without documentation. Benthic; depth: surface (nightlight; Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California), intertidal to 137 m (449 ft) (min.: Carlisle et al. 1960; max.: Ebert 2003).