Sarda-Borroy, Rafael. (1987). Sphaerodoridae (Annelida, Polychaeta) from the region of the Gibraltar Strait with description of Euritmia hamulisetosa gen. et sp.n. Zoologica Scripta. 16(1): 47-50.
Euritmia hamulisetosa gen. 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 are Ephesiella abyssorum, Sphaerodoridium claparedeii and Sphaerodoropsis minutum. Sphaerodoropsis capense (Day, 1963) is transferred to the new genus Euritmia.