Swedmark, 1953
Description:
Small interstitial worms with three or four body regions. Head region without appendages, in Psammodrilus followed by collar-like pharyngeal region. Thoracic segments with dorsal cirri, supported by aciculae. Abdomen with segmentally arranged ventral uncini. Anal appendages laking. Almost completely ciliated.
The following taxa of this family occur in the region:
Genus Psammodrilus
Psammodrilus balanoglossoides