Ilypnus gilberti (Eigenmann & Eigenmann, 1889) .

Cheekspot Goby. To 6.8 cm (2.7 in) TL (Rosales-Casián 1996). Estero Americano, northern California (Hickey 2007) to Bahía Magdalena, southern Baja California (De La Cruz-Agüero et al. 1994), and Gulf of California (Miller and Lea 1972). Mudflats and shallow bays (Miller and Lea 1972) and estuaries (Ruiz-Campos et al. 2000); benthic; depth: surface (nightlight; Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California), intertidal to 24 m (79 ft) (min.: Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California; max.: Personal communication: Los Angeles County Museum of Natural History Fish Collection, Los Angeles, California).