OXYPOLELLA ALBA BERGENDAL, 1903
Oxypolella alba Bergendal, 1903: 144–146; Strand et al., 2010: 114–115.
Sequence: AF103767, 16S (484 bp), determined by Sundberg & Saur (1998) from a specimen collected on the Swedish west coast .
Distribution: Sweden (Bergendal, 1903; Sundberg & Saur, 1998).
Remarks: Strand et al. (2010: 115) summarized the species with, ‘Length up to 5 cm. Body white and glossy, circular in cross section, not tapering posteriorly (apex rounded), typically contracted and held in an arched posture. Skin thick, wax-like and slightly wrinkled. Head eye-less and pointed, without horizontal lateral cephalic slits, but demarcated by a transverse furrow encircling the body. So far only recorded from one mud bottom site off the Swedish west coast. Biology and distribution otherwise unknown.’