Schmidtea polychroa copulatory apparatus

Reproductive system of Schmidtea polychroa (Platyhelminthes, Tricladida, Dugesiidae).

Abbreviations: b, copulatory bursa or bursa copulatrix; bd, bursal duct, canal, or stalk; de, ejaculatory duct; gl, glands; gp, gonopore; m, mouth or oral aperture; od, oviduct or ovovitelline duct; pb, penis bulb; pp, penis papilla; vd, vas deferens or sperm duct; vs, seminal vesicle.
After Böhmig (1909).

Original source:

Freshwater planarians (Turbellaria) of North America (1972)