longidorsale, Syacium Murakami [T.] & Amaoka [K.] 1992:82, Figs. 16-17 [Bulletin of the Faculty of Fisheries Hokkaido University v. 43 (no. 2); ref. 19779] Gulf of Guayaquil, Ecuador, 3°39'S, 80°41'W, depth 13 meters. Holotype: USNM 317825. Paratypes: HUMZ 121131-36 (6), 121137-40 (4); USNM 317826-27 (11, 14). •Valid as Syacium longidorsale Murakami & Amaoka 1992 -- (Hensley in Fischer et al. 1995:1377 [ref. 22830], van der Heiden & Mitchell 1998:756 [ref. 23424], Chirichigno F. & Vélez D. 1998:206 [ref. 24555], Nelson et al. 2004:180 [ref. 27807], Page et al. 2013:186 [ref. 32708]). Current status: Valid as Syacium longidorsale Murakami & Amaoka 1992. Cyclopsettidae. Distribution: Off Ecuador, eastern Pacific. Habitat: marine.