Spintheridae is a family of marine polychaete worms with a single genus, Spinther, containing these species: \n* Spinther alaskensis Hartman, 1948 \n* Spinther arcticus (M. Sars, 1851) \n* Spinther citrinus (Stimpson, 1854) \n* Spinther japonicus Imajima and Hartman, 1964 \n* Spinther miniaceus \n* Spinther oniscoides Johnston, 1845 \n* Spinther wireni Hartman, 1948