O. luebbeni Noldt, 1989 1973 Figs 28-31 28. Squeezed specimen. 29. Proboscis (lateral view). 30,31. Proboscis hard structures (top views).
from Brunet M (1973) Turbellaries Calyptorhynchques de la region Marseillaise. Les familles des Placorhynchidae et Gnathorhynchidae. Bull Soc Zool France 98(1): 121-135
