Euritmia hamulisetosagen. et sp. n. is characterized by many rows of sessile macrotubercles without terminal papillae; all anterior appendages are short and setae simple. Three others species of Sphaerodoridae collected from the Gibraltar Strait region areEphesiella abyssorum, Sphaerodoridium claparedeiiandSphaerodoropsis minutum. Sphaerodoropsis capense(Day, 1963) is transferred to the new genusEuritmia.