Provortex impeditus ? 2008 Fig. 274 Provortex ?impeditus from Canada. Manawagonish Salt Meadow. St. John, New Brunswick. A-C. Deviation. Rod on end of the tube is turned inward into a hook. (Ax original 1984)
from Ax P (2008) Plathelminthes aus Brackgewässern der Nordhalbkugel. Akademie der Wissenschaft und der Literatur Mainz, Franz Steiner Verlag, Stuttgart, 696 pp.
