<P> Everted pharynx of Alitta virens (also known as Nereis virens), lateral view </P> <Li> <P> Pharynx of the flatworm Prorhynchus fontinalis </P> </Li> <P> Pharynx of the flatworm Prorhynchus fontinalis </P> <Li> <P> Pharynx of the flatworm Platydemus manokwari visible as the worm feeds on a snail . </P> </Li>

The middle portion of the pharynx that lies between the palate and the hyoid bone is the