walkeri, Myxodagnus opercularis Dawson [C. E.] 1976:36, Fig. 13 [Copeia 1976 (no. 1); ref. 7376] Beach, 0.4 kilometers south of Chacala, Nayarit, Mexico. Holotype: LACM W58-8-1. Paratypes: GCRL 12792 (10), 12793 (1, c&s); LACM W58-5-1 (1), W58-5-2 (58). •Valid as Myxodagnus walkeri Dawson 1976 -- (Patzner et al. 2009:472 [ref. 30396], Hastings & Springer 2009:9 [ref. 31156], Page et al. 2013:167 [ref. 32708], Page et al. 2023:158 [ref. 40505]). Current status: Valid as Myxodagnus walkeri Dawson 1976. Dactyloscopidae. Distribution: Eastern Pacific: Mexico and Costa Rica. Habitat: marine.