Rathbunella hypoplecta (Gilbert, 1890) .

Bluebanded Ronquil. To 27.7 cm (10.9 in) TL (Toby Carpenter, pers. comm. to M.L.). Point Conception, California to Santo Tomás anchorage (31°33’N, 116°24’W), northern Baja California (Stevenson and Matarese 2005). Previous reports from San Francisco and farther north are probably due to confusion with Ronquilus alleni Gilbert, 1904, and perhaps Ronquilus jordani (Gilbert, 1889) (Stevenson and Matarese 2005) . Benthic; depth 3–178 m (9–584 ft) (min.: Kiernan 1990; max.: Gallo et al. 2020b). Evidently this is the “deepwater ronquil” of Eschmeyer and Herald (1983) (Stevenson and Matarese 2005). Common name, Bluebanded Ronquil, is from Nelson et al. (2004); previously called Smooth Ronquil (Robins et al. 1980). Although Stripefin Ronquil was a name in general use for this species (Fitch and Lavenberg 1975, Eschmeyer and Herald 1983), R. alleni is actually the stripefin form (Kiernan 1990).