macrognathus, Myxodagnus Hildebrand [S. F.] 1946:408, Fig. 80 [Bulletin of the United States National Museum No. 189; ref. 2161] Lobos de Tierra Bay, Peru. Holotype (unique): USNM 128224. Additional material: BMNH 1913.7.10.39-40 (2). Type catalog: Springer & Orrell 1996:14 [ref. 22274]. •Valid as Myxodagnus macrognathus Hildebrand 1946 -- (Dawson 1976:41 [ref. 7376], Chirichigno F. & Vélez D. 1998:244 [ref. 24555], Nelson et al. 2004:162 [ref. 27807], Patzner et al. 2009:472 [ref. 30396], Page et al. 2013:167 [ref. 32708], Page et al. 2023:158 [ref. 40505]). Current status: Valid as Myxodagnus macrognathus Hildebrand 1946. Dactyloscopidae. Distribution: Eastern Pacific: Peru. Habitat: marine.