* Herpetoichthys fossatus (Myers & Wade, 1941) .

Mustachioed Snake Eel. To 55 cm (21.6 in) TL (McCosker and Rosenblatt in Fischer et al. 1995). Gulf of California, including Cabo San Lucas, southern Baja California (McCosker and Rosenblatt in Fischer et al. 1995), Peru (Chirichigno and Vélez 1998), and Islas Galápagos (Grove and Lavenberg 1997). Benthic; depth: 5–40 m (15–131 ft) (min.: Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California; max.: McCosker and Rosenblatt in Fischer et al. 1995).