P. campylostylus Karling, 1947 1947 Fig. 12A reconstruction of the genital organs from the left hand side, from sagittal sections. Camera lucida, Magn. ±500X.
from Karling TG (1947) Studien ueber Kalyptorhynchien (Turbellaria). I. Die Familien Placorhynchidae und Gnathorhynchidae. Acta zool fenn 50:1-64