Subfamily Spiriniinae Gerlach & Murphy, 1965

Diagnosis. Desmodoridae . Body cuticle finely striated. Head not demarcated as a cephalic capsule. Amphids a simple spiral usually located far anterior on the body. Buccal cavity rather small, from minute to mediumsized, with a distinct or a minute dorsal tooth; two smaller ventrosublateral teeth may be present or absent. Marine.